Document text
Hata
Uli
il
SAN
FM/AM-1200S/A
_ Operation Manual
| 1002-5501 -000
OPERATION MANUAL
COMMUNICATIONS SERVICE MONITOR
FM/AM-1200S/A
PUBLISHED BY
Aeroflex
COPYRIGHT © Aeroflex 2004
All rights reserved. No part of this publication may be reproduced, stored ina retrieval system,
or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or
otherwise without the prior permission of the publisher.
10200 West York / Wichita, Kansas 67215 U.S.A. / (316) 522-4981 / FAX (316) 524-2623
OM A0IVAS2S SHOITADIMUMEA
&
<) ¥ 2 = . ,
YS Ware J
aliouwea
'
agDs yvelhreA
ofa DOoUboIne! 40 -¢s siapitdug eit! 'o hed o4- Sew
ia i moinatioem ooineiiseéle .ceem yas vc Tanne? 7h ae
mafeiiduy of) to noie2inieg solve art OF
. at
_ % .
« i*® f '
e's
f no PY; Cy
- . ) al
, ‘ j Pate if A
5 aa) .
(hGh-SSh (OTE) 1 AG We his hexe onanan antigo
WARNING:
HIGH VOLTAGE EQUIPMENT
THIS EQUIPMENT CONTAINS CERTAIN CIRCUITS AND/OR COMPONENTS OF
EXTREMELY HIGH VOLTAGE POTENTIALS, CAPABLE OF CAUSING SERIOUS
BODILY INJURY OR DEATH. WHEN PERFORMING ANY OF THE PROCEDURES
CONTAINED IN THIS MANUAL, HEED ALL APPLICABLE SAFETY PRECAUTIONS.
RESCUE OF SHOCK VICTIMS
. DO NOT ATTEMPT TO PULL OR GRAB THE VICTIM
2. IF POSSIBLE, TURN OFF THE ELECTRICAL POWER.
3. IF YOU CANNOT TURN OFF ELECTRICAL POWER, PUSH, PULL OR LIFT
THE VICTIM TO SAFETY USING A WOODEN POLE, A ROPE OR SOME
OTHER DRY INSULATING MATERIAL.
FIRST AID
. AS SOON AS VICTIM IS FREE OF CONTACT WITH SOURCE OF
ELECTRICAL SHOCK, MOVE VICTIM A SHORT DISTANCE AWAY FROM
SHOCK HAZARD.
2. SEND FOR DOCTOR AND/OR AMBULANCE.
3. KEEP VICTIM WARM, QUIET AND FLAT ON HIS/HER BACK.
4. |F BREATHING HAS STOPPED , ADMINISTER ARTIFICIAL
RESUSCITATION. STOP ALL SERIOUS BLEEDING.
ICAUTION}
INTEGRATED CIRCUITS AND SOLID STATE DEVICES SUCH
AS MOS) FETAS S2ESPE ODALLYICMGS TYPES SFARE SUS=
CEPTIBLE TO DAMAGE BY ELECTROSTATIC DISCHARGES
RECEIVED FROM IMPROPER HANDLING, THE USE OF
UNGROUNDED TOOLS, AND IMPROPER STORAGE AND
PACKAGING. ANY MAINTENANCE TO THIS UNIT MUST
BE PERFORMED WITH THE FOLLOWING PRECAUTIONS:
1.,, BEFORE. USING IN AL CIRCUIT KEEP. ALL. sb BOS
SHORTED "TOGEINER= EPTIHTER’ BY "THE USE™ OF
VENDOR-SUPPLIED SHORTING SPRINGS OR BY
INSERTING LEADS INTO A CONDUCTIVE MATERIAL.
2. WHEN REMOVING DEVICES FROM THEIR CONTAINERS,
GROUND THE HAND BEING USED WITH A CONDUC-
TIVE WRISTBAND.
S OF SOLDERING IRONS AND/OR ANY TOOLS
D MUST BE GROUNDED.
4. DEVICES MOST HEVER De Serio INTO NUR
REMOVED FROM CIRCUITS WITH POWER ON.
bi PG BOARD y “WHEN TAKEN [OUT TOF ATHETSET. OUST
BE LAID ON A GROUNDED CONDUCTIVE MAT OR
STORED IN A CONDUCTIVE STORAGE BAG.
Remove any built-in power source, such
as a battery, before laying PC Boards
on. conductive mat..or storing in, con-
ductive bag.
6. PC “BOARDS, "ire Celia Siitreo FU IHEatn lume
FOR REPAIR, MUST BE PACKAGED IN A CONDUC-
TIVE BAG AND PLACED IN A WELL-CUSHIONED
SHIPPING BOX.
The
rev
current change or revision are so
LIST OF EFFECTIVE PAGES
manual pages listed below are identified by
ision number. Those pages affected by the
Current revision number and an asterisk
Os 10G Were ee eee
Reverse Onn ho. OAM:
Rava stiton °F .. OS
Rewis tones. .4..7. 98
Rewiisiom? Gh ner
ROVE SON, a3 aera hs
REN TS OWS 55: oe
RCW SON rt tee ek hie
ROW? StKON ys «eo.
oe: .e, 0) 6 6) ¢
ee ¢ € 6 © ©
os 8 © © © & 8
® © we! @.Je: (ee
© <6 \@) 6, fe’ Je: “6
@ Ne). (ee) le Oe
eee © © © «@
March
t,
(e).
1986
September 22, 1986
June
Gan
1987
September 15, 1987
April
gam
1988
November 1, 1988
November 15, 1989
April
ahs;
1390
September 1, 1991
TOTAL NUMBER OF PAGES IN THIS MANUAL IS 288;
CONSISTING OF THE FOLLOWING:
Pig.
Tut
Cop
War
Cau
ra, ae
—s
No. Change No.
POP OO Le satan 3 o 0
VIEL Gat. wae Cera. 4 ars 4
Wiad Pages... scx 0
EIGN) Wags nines ¢ 0
eece ee ee ee ee ee we ee ew
B. By O.61.8 (0: 2. Pp O06 Te 6 », 6) 0 (000 Le ©
eee e ere eer ee ee ee we ee &
identified by the
POssho., mange No.
Sos teas 35 pale me «Neca Ue Mire eee 2
CA nh 3 ie Ms A ge 2 ea oy re
Ae0h's Ven a 4 Lae,
ee Acinic ene une ce
Ari he 3s 4 tales € «fits ie As
Ay CA 4-7 a
Be ee Hea 6 + <6 wale
Ey eee ICS cs (3401 0 e-3
7s oR We gE pel Re tr il ae
Hee Tne W 47.244
Bie i alee cleat bits
BO Ate e teats, detec Goa eeass
ZO Le at pid vs Bs, 4, 02 KE
4-27
UES ete ered, Slater a fees @ fis
4-3
4-34
4-36
Caer ees, Sear eae
fA Re Eat iene come age
4+)
THe
oe ee ee ee © ©
08
08
LIST OF EFFECTIVE PAGES
Pgsz-ho; Change No. (
BB sete ted ots oy Peeks oe 2
Se PIR vie ser ce teres SIF 6
5-5 -Chinu:-o- oe 5
RG hin: Sick) ge ee 6
ood boph ris ~15° eee. 5
5 boast Gu: > Lo Dee 25
By sd cera eerie a aS oe aN us 6
Beh Gon Bia sIhK: arise eotees 5
§ = lion Uy Os bGu ee. 5
Bie BBs Me i le coat Ad Nag 7
Sa lS ween) lo oe eee as 4
5 200 Yorer US 2 40 os a. 5
See By <i) Grape ee am bisa craks te metas 8
5 26 sO Ar 9 Be wees ot 3
Sey 2. Be triruuns eer es. a. 5
seo ett Oey. Al ia gk ade eos ons Ren 8
*5\< 60a) thr 5 7604 22.28
5+ 61 eb har oS a62°6 4. os 7
Banoo Emi 5-68 oo... 6
S69 cthru S270 ce 7
52) k- nn eat eee ee 6
Bie hS tke 1 athe Rees ot 7
B-J Sethu 5=.0 we. 8 6
Boy Ml te Sit «aS Wh eae eke 7
Bs Bo cat He Oe. ae 6
b= 29 + ERT 34a hee ee Pe
B82 tbe. Sab eae eee 6
5 28 Avs). aaa as ee 7
Sie O Bie ne Soe eles Seve 6
b= Biie:.& vara coe ore 7
5-8%-thru’ S-Beaxees 6
5-90 tara S70. coe 7
Say eee ee ae 6
= 92nth tu. 5-108 2.8%
521028 Va Wk swe See 7
A ed aOR EAS ine ches eee As)
Pi TR a ida heck tc coe tee 7
A-7 thru A-8 Blank 4
B=irihruwbr4e.a. acas 5
Cedmtiheue Cray 45 2
DHie Ee 02 ok ee 0
Eel SOR ete EA a os ade 0
P= le eheu tee ae 5
Cela rire Ghee Loess 5
bile ene Chloe. yc 7
H+ 20a Balak is thee em y
PREFACE
SCOPE
This manual contains instructions for operating the FM/AM-1200S/A
Communications Service Monitor. The instruction level of this manual is
relatively basic and presupposes no previous experience on the part of
the operator with a communication service monitor of this type. A basic
understanding, however, of communication electronics and practical
troubleshooting methods will be helpful. It is strongly recommended
that operator be thoroughly familiar with Sections 1 through 3 of this
manual before attempting to perform any operating procedures contained
in Section 4.
APPLICABILITY
All information contained in this manual applies to both the FM/AM-1200S
and FM/AM-1200A models, except where otherwise noted. For reasons of
brevity, whenever text information is applicable to both models, the
units are referenced as "FM/AM-1200S/A" (instead of FM/AM-1200S and
FM/AM-1200A separately).
ORGANIZATION
The operation manual is divided into the following major sections:
SECTION 1 - INTRODUCTION
Provides a brief introduction to the FM/AM-1200S/A including pur-
pose, functional capabilities and uses.
SECTION 2 - INSTALLATION
Provides a step-by-step procedure for setting up the FM/AM-
1200S/A for operation.
SECTION 3 - DESCRIPTION OF CONTROLS, CONNECTORS & INDICATORS
Identifies and functionally describes all FM/AM-1200S/A controls,
connectors and indicators.
[NOTE]
As an operating aid, Figure 3-1 (which locates
and identifies all FM/AM-1200S/A front panel
controls) has been incorporated into a fold-out
page. By extending the fold-out page, the
Operator can easily reference any front panel
control while simultaneously performing any
operating procedure contained elsewhere in this
manual.
SECTION 4 - OPERATION
Contains instructions for operating the FM/AM-1200S/A Keyboard
and VFD. Using the Keyboard, the operator can enter data into
the FM/AM-1200S/A in the following modes:
l.+ Drirects Data ent ny
2. Programmed Data Entry into Memory
3. Executed Data Entry from Memory
In addition to Keyboard operation, this section contains a selection of
basic operating procedures pertaining to all major functions of the
FM/AM-1200S/A.
SECTION 5_- AVAILABLE OPTIONS
Contains descriptions and operating procedures of available
options to the FM/AM-1200S/A.
Useful supplementary information relating to the operation of the
FM/AM-1200S/A is contained in appendices at the rear of the manual.
(See Table of Contents for a detailed list of manual contents.)
i1
02
oT SUIEE BO 5) BR CS Seb NICS OS I Ba 1 le A US Be ry PLO a nr he, A
ae Cie ees ol ate een eae ee eet oe eres nee Po Let eats he Ries Se ay ah ee tk kee Ee be j
MUS SSE eda RoHS AROS fey ysis SN Se ks AP oko ioe RL ened se Dede eae fe idle aide Bela eT AR ha ae a a 1X
SECTION 1 - INTRODUCTION
Paragraph os ca) Page
i am RSLS Ta) a a lpn aie cre si ea at cad Np args eb a Aig aig ame ae eee at ne a ee ioe |
eas Sera eIVe dear Re C erry © bite... whet © eye oy O.aal bit web wee dtes deere
ee PAU tn ter TC Opa LPS vise cee e.hS. ate wie eek con ea caine kite
1-4 Caray aud: | Omtiro nn Ped cir Glee tu. re. kere s Sere ao eas wie drole dus ies
b-5 Gene tatir Rete LVeT Support. FUNCTION: siete eee. eels. Hoss:
£6 AM a PRE aU WL OCU Wares ty hws. Sine ate 7 Maton aate arte dag ake ale by Gade eo i-35
SECTION 2 — INSTALLATION
ee Peer emetic Ue occ he ee A eR es Nh Ge ea i de we est Vacant
ees ee a ere) th Sia deen tad. 5s Sieg es Oh ae Ee Bt Pee tees ets eS Re 8g ees oe Zed
par Bee cee ere 0 RUG Me ceo ily et N es os a a ited eA ARIE A i a cat a ce a do! old oe! cag: 8 AS erie
pe A ESC OM 8 8 AM ar as A Qe ee ee Pa ey 2 Pee
a5 Eaver nest «CONCERT ERFURL TOM. PPG COG E108 an 2 + Ge adie ewe 2-6
SECTION 3 - DESCRIPTION OF CONTROLS, CONNECTORS AND INDICATORS
too RMON alee or ARM PORT OPEN E IE Ot. nice ee ee Seay oo ale ne ce es Ie 2
or? RM Apt le Sy Ae ROOT Pane) tit om 5 oR UPAR ODA. oc eee ee eas ack a
tee ROY Oe te wckha Virol a ESC UR (tt be ate o ce oar ee ae 8 ae whe, Wee pach id
Gare b fe APT WCe ta MN bie Wit Acct alas oa ae home Mears ate a LL PO es os aie wb os we ae 6 sata:
6 ie eat ERG et) ee tO aw RES Hela Te Fd UNE dis Mat ie ihc REE ee ets eines ahaa 's a 4
oe as COTS GRE CON PO REV Sey i Ce cae EF eats PIR TOON oc bie cere eats oe
ae i AeQeGie ae He NS GE. ce Fee ele Se ee ee PPPs os ee ods aes 6 ea Ge
SECTION 4 - OPERATION
ee aa atic RR RIP rs irene NG i See hc ic Une alah Gi eae Sa ae wR ab lo cee 4-]
Reseed hie nae. oF COnNREnNtS WPthth CHS Sections ...s.cces eae. 4-]
A= Eg ca me ree a tar satis ce Pe ie vette ae See VM ok eno) woe Se gic a oye SHR sis
Bie ed are eens reve ang) ee EOC Mick we Oy ets v0, Ut lg BYARD Mig aighalle o Use ead jared: # igi die avers Ae
141
TABLE OF CONTENTS
Paragraph
yeaa
4-2-3
4-2-4
4-2-5
4-2-6
4-3
4-3-1
4-3-2
4-3-3
4-3-4
4-3-5
4-3-6
4-3-7
4-3-8
4-3-9
4-4
Title Page
DiPECE< TONES ENS V ¢ cow Se onm ae Se ee ee a Ariz
Ditect ~DUME Cand - MTS Se a Cie es ert eee g ocstc ciate te eee ee 4-4
Direct vO FES ET sem riy ate ew ny eee ae es ee 4-6
Meter FU mrcb til Mia. wila. sic: cleo yet el ape eer oo se aol es eee nrg oe ee ee 4-6
Set. ENCSNS 1 Gyr GV Ji ice woes cgean ares a alti eset od gence ce cea ere ce 4-7
Programmed” Data, Entry 7 VRtO Memory. ius cn ssc ae ce cen 4-8
Programmedc RE pMemoryt.. LA Leamels On Cee he oe eee 4-8
Frogrammed: TONE Memorny ns ooa5.c oe sa buco neice inns eee eae 4-10
Programmed DIMS and IMS Memory oo. otc. 2. ue oe bee eee 4-12
Programmed OF ESET Memory 9 oe PP eR OA See. eee 4-13
Programmed DCS MemOny) i345 von ce ee ae Oe ee ee 4-14
Programmed, 1° SEU MGMORY jou oe) gs Gd. iis ees eee 4-15
Programmed Two Tone Memory Sequence. o..... 005... A> 25
Programmed “SCAN “Memory! fete fc sicte sn crclene a ccrsts eteteieus yee PB i
Programmed “STEP “Memory ferrite oS os oe ee oe ee 4-19
Executed Data Ptr yy hey cc ctiace sw eoeees slate cele on a ages teeter 4-21
Exe cut tig RE RUNG CMON Gries oe ecco crs of sie oe ae ences a2
Executing TONE FainGt Vone ace. 2 Peed oie ce oe Se 4-24
Executing DIMS/ IMTS) <PULSEda Funk tAOnS(- MANES... .0> eee 4-22
Executing OFFSET Funcéion.<hekt AL oo HN. eee 4.22
Executing SCAN ‘Function4o66. GA bad. bs eo... oe 4-23
Executing OCS Function «....:<..,:@8e8..84 [tens ee eee 4-23
Executing T SEO Function... one8 66d ou eee l.. eee 4-24a
Executing STEP (RP & TONED, Functedome). 5 oeee dc oe 4-25
Executing Variable IMTS, Audios Fumctd om). <.t66..). ..). eee 4-27
RECED VOR OD ea ita ai us kien acl 6 css pns oo eee tie 4-28
General of se. ules es aa de ete tes ale ues oe em 4-29
Basic Receiver Operation wus bai ie gu gaalel hs ghee a gh ctras peataeh a eey cate oree ote oa 4-30
Receiving AM or’ FM Signals (Off -the-Ain) .....:27 57. ee a> ga
Receiving SSB Signals (Ot f-t head Poe ee 4-39
Testing: AM: or FM Transmitters. i. ee ee A> oe
Measuring AM of FM Transmitter Distortion 6)... .-. eee A-3e
Paragraph
4-6
ee oe
Arb -¥2
cad Ohas
4-6-4
4-6-5
4-6-6
Bb. -f
eat
Beef =a)
Breas mie
I ai
oe p84
4-7-5
4-7-6
4-7-7
4-7-8
4-7-9
4-7-10
4-8
avd € Page
rip iicpartheratorr Operation (S@mplex) 0 ooo. scan oaak 4-34
ed, eee, MA Le SG Ma en SE Le I oe. Pcie wn es oe ait
WIeie ene Fatorr operat rome eS amp lex) IME e TS see eae 4-36
Generating Ait or My Modu Vatedv REIS dials .3. oe... een ee. 4-136
Externe alae od tom iy REVS Lom enyiWeiierator .... ies. ee eee. 4-38
Wes cee Modu a tidigs Re oN Od GENERA GO f. bite8 6 Aol tea ein AP 3G
Vicar Seem ee We Went Lag 2 WO ie at enn hi ME Ske La fea say AES
MeRS Rae ahee eT Vera S INAD Sens at iwity & «aime woes cele 42839
WOMEN tees mee i 10 9NS fede ais as) bk wk ASH eater MR oye lap de Woh dan Sos eae es, BS 4-40
Ce a Ae cy oh tare ke ok a ee eed ara AD del Rete Ag 5 ieee 2)s Gos > 4-41
Duplex Testing Using Separate Transmit/Receive Lines
CUO Len UDerat ion Crm AM= L200 URE Ve ae eu s cobs eee |
Or Panett UDI ex. Testing CEMVAM=-120048 Only) oc. e-e. aus a. 4-42
Duplex Testing Using Common Transmit/Receive Line
Chaise Duplex Operation jaGrh CABS 200, A On dvoid on oe ce lee ks Aim Ae
Debi VOS aa We we GF Mia ti.2 UDR ON WY) cs & nn sycte wed ele os ee oa oc 4-42
wD exe Gene here pMeagey CEM/SAM-1 200K Only jo. -wawes s. oc. 2 seh: 4A
Selectinon DuplexsHagh? or.“ Duplex, Low”
CO LURES | og eal E 9 ma #7 $5 35 98 eR ea dP an Bee > a ee a 1 ae Sie
Duper Lest tower noas CEMPAM=<D2005 Gal yi) cc. cde wee ewan es 4-43a
Paw ree f ipeeear rh omy sce ae ire, RTP EY mcs ora e Gl are Bud Abus ce ialio{ wh ws me wa de ales 4-3
Pup eo rerre cd ber OMe CP thy OM ae OU ON LY Big ad 5 wee ais eee sale Keele 4A-43d
OA Ova W seaee ee CUE TSE MENT aha, Wet a rt ANPP Gm a ROSgEO ae cue $4 Gane ww WR wR DR 4-44
ESS AECL Y City MEM APRN Loerie UTD coh eevee ae nt eN a. de 2 Oe ASS PRG a8 <a 40.0 S28 a Soe ee 4-45
EvueT Mame Sea NOS eCeDe URC bae 1 ONe Aueksn ca dade wo Basie. a ee leeds AA
Dite Pia SG 1h OSG Oe UPS Nady Olina: ois ci caieae hails + oan oie ok Be A= sh ty
Pie Creme cUR ThE Se oe eo eya re le erg ME Soke eh oy SDE a lain p wrk a eas 4-46
Ore tr MR ee ab ce a ea RA ok Gta gue as Bde ge cetal sah we 4-406
[pepe iin eho vzersUDerat Lon, (FuYAM: 12008, Only) ....9 20% 4-47
att EE cee eM I lec Woe rar er ae Supe a Suet i dG ge se. A lap 9 ho eyes Sab URE Sf
ee ea I ce Pe eel CIO T ac uo a auntie i Sik ade lk wile co-e da xb Go ts Ae 4-49
CC u emma eis fret aa Cet UOMO Goes a Sd occ aa bk @ a wG ag Hew DS ees al RES 4-49
Dae Wicca Cee Ae I ie Be WR ria St. Gotan ay ABIES igs don Glos we + goals 4-50
V
Paragraph
Bi ag cal a
met is Z
aye ige.S
Mae} a4
Title Page
FMZAM=1TZ00SAAP INGE Paki Berti On +e 4 Ate oa ie ee oe eee 4250
RS+232 Command ‘Procedtre and Datawsr ru CW ne ay A ar. a aoe 4-51
Allowable, RSz232sCommande-hovrmaets pedtad: “heard > o> 2 eee AO
RS-232 7 Remote 1 Commands pw: Aa eo toe BAe eae ee 4-53
SECTION 5 — AVAILABLE OPTIONS
Gee @ Pear Wer Sree ee ig etree AN Ue Ute thn chee arene Ene AC earn ee De
2° PPM Frequency Standard: —-0Optitom 01 22 tee ae 6. Dare
.05-PPM Frequency Standard -“Upti1on 02... 0o......... ne ee |
Battery 22 Opti ai 08 ers OG er eae oi care te 52
Generate Amp higner —O0T.70N (05 See ee, oer!
GOST Fe ee ee arg oe crate cc oa! sali are eR tee Uo sake Dari dest ata ae ae uae Tes
PSG al Ta AO Mosca ee Waa teed BH ton hehe iy hot ce alee es cee Soe
OPO CSE LOW snuck wey Riba yc Rie emeey eaeits ba ckaoe ate re ce ee
MI CRODHONG”’ =" OD TUTOR OO 2 lly eie emt ero cies Geis ent) eel te ae
Tetescoping ANTENA" ="Opt Ton Uy eie8 oo. cos ee ee oe Seo
Soft: Padded Carryieg Case <"Uption 0S"... :....- ee ee
Digital Voltmeter and DIMF Decoder --Option-10 ... 33eam 5
GEWMEMa dae apis pessoas Sy eee Datel det ore Satie ao Gases nt ate) 5-4
Digital Voltmeter Ope Caio iis ulin oa euler 5 a
DTMF Decoder Operation wc. 2 pees eee ues ek ee 556
European Signaling: CEncode/Decode) - Optiwon 11° .. cae 5~
GO WE AT ee sok wri hw a a os ese aes LR NS ee aU, cal a 5-8
Five-Digit Signaling Format Operation (Includes CORRS
FEAG WETAg ZVECT IO ZVETZe NZ VETSEANAREL ang CURO)..2 ee og «|
Programmingyvand ExecutingsZVETZ.in*Generate Mode . . sae Re
PXCE WES NGURCCEO THRONES ol) cy cite ca ec a eae we ee ae 9 |.
Executing Five Digit Format in Receive Mode... .).. ee 5 he
EXeCwtangeuaATe loin Receave Node with RF Set ito
123.4567) MHZ 5 bene eh cus wiclvey eter his ee th een a 5 <i
5/6 Tone Stdanaling, Format Opera t 10. fn ee eee
Two Tone Siqnaling Format: OD exeat ton. oo ace es re = ie
Enhanced European Signaling (CEncode/Decode)—-Option wm
wisoftware Verston 420-04 CorrAigher) + installed |. 2am Sia
Paragraph
Sls VG)
Troe
Programme VE Pahnt-D1ait Sig
Cipeiieese CLR. EEA «iE TiAn ev ; F
EAU emu mmmnnC CHC Pai) 1 ieay ste ee S We co SEE Ce oh ihe Geek GRE. vl oh bk ots
Sinareoe am sina mwmer Flog Nhat, OE mit bee... PO Mile ccs sc pee se te ee
BOS ea tae rat a AN OL ae OU MOUS COEGA. fas se BS os SOR Ny oc Bh oS Sele high wie a was eo Rohe
ee ener APON ee eat eer EN IND FEO. ges n er ad say shah gd a Ske biG 6 ae Bla e them
PPecKi nen oene rd. Olea, UNtTion 12 CRM/AM-1200S Only) .c..5.
eat MES ee yee Pe et Nae Sa xR isbn be Seto Rat Sh egigton G AR SOS a elegy eh cash & +
Seren eura atin Generator Mode Of TOPeEratlon o..5,5.-.
Se ace re GAM EG MR et BRR Na oleae a bey A binds (oo CPR HA ered GARR ace bate NE So Kel ms Susen Bye! |
aa tan at Ras ed ake RI BY CECB ge, uy ae cad eeiar sae whee ob pea enh Seale de dhe a) ae bw Saw Sas
So VoMMmanis kor tracking GENerawot sangas i. 6 cow sess gee
GPER. Ove Rane Ore me © 0m Wl Oo tee 2. oe Beek ele eae wee wa lee ds es
OA ee) LER ods RT ards AE SS en ei ee Sg an Cena ee eer ae een ee oe
Fae em eT MAC et Cee RUT PPC PERE BE orang cnnti a) aise. eke doyadian, yee tck sicecmyn, Nye y es leu¥ sesaiss
BOS RCAC (SGU E WMS y's paca WS 2s ai 8 | ede ee eee te ee
UO Rie ONC Mees Atm TION) UDO Val CCIE". cucsiwag ene scien oxen SreckhicgsuvySraesaeavei ays wes
FM/AM-1200S/A and GPIB Message Interface Definitions
ee cee hs Seren eet 8 RONAN eee lesta cotta eh a SUL oy Dt tS ca Sarid Minories aie 4 alnvntar
ASC Laut oue cClCommanas £O TNS ARAM] LeUOSIA oy cnc cokes
Tepe ON OOS 8 TS fA Be 00 Oe: a RMBs ois lg a9 Ca en ae
Pe SU ree Cte ts ON ee CR ae st rere ee ere uote) Se Ge wale cee Gib ty) S me 2 AS
oi Mie ko Bo i Ae Bg a ih I hi AR es) a en ee ee
PE enemies Ls UME 1G, Vis a) (UVES) 8 ene Ae bea Soe obo Siow SSL ele ws
Rg me Mere MCN UAT Sa tte) hat ke Oe see ates s! Ssh Susie Hyg Sms HR ees
Asean eee COs Fo CRM PAM whic e OO o ONDE YUse wel Osa eee elles
ae ee ee ae ck, Geen nee eee nin ta PME) vial whe © ae Alo mace HOR a
SEVIS Cee WENT gas ia (ce (cig Lg 4" Go oe ea
eer me TIL! oS ECM. . Souls sew tbe os ede gee a ee es
Pe tte ye a ey Oh OG PUM @ Oe 82 lees wos ade es Sb ee ey
PG eM cc eet wy OC et © of Suh ag ong kare s oe ais a a scase ets ee
Sample, Encode/simple Decode Modes and Repeater
ek en ee CR EEA ies Me fe eg iy Whig aignigs wisi sos Ee Slay Ad wow Oe
ae Ge
Paragraph
bie Sey,
ayaa BG at
5-14
Se ot
eee a
B- 14-3
5-14-4
Se
bia 4 = 6
5 A= 68
oo Ral We of
Se bane
yr Rae)
5-14-10
Se la-li
cae ad By
2 Hoel We Beas |
5-14-14
ir tee Hoe Gi)
S- 14-16
Be Le ehh o7
S214 218
Vili
06
Title Page
Repeat.ere Salimunl aitaiony SMO. Gere rhe cco ate a ietere eee reer oe ence cents eee 5s
Mobidles -Uneiits Sa murat om) 0 di@ynr.. sie ty seas ee epee kote eine piece 6 eee 5-588
CEIGUIGAR® oF ES TENG
AMPS s: (OP TLON 15. OCPMPAM™ 1200S ONTT9
ETAC Svs sOPT4 ON ohG nGPMSAM= 1200S ON LVS) ee ey ee 5 68
GENERAL. \ ccgycectderoacag co asa ee - hh ie me eee ewan ee 6 Ciliates 5 Out
TNT TALS SET UP er ars ie onde eek) occas a ch eMule teeta Cc ence a sas eae 5 oe
Manual Mobi.le-PoeCe ll Cat) oom. ies octet ete 5-68
Meter Displays During Cellular Testing... . 12:2...) eee eta ae
Manual Cellular Test STNAD Measurement ........5... 2 5 ie
Check DTMF Digits During Manual Cellular fest ...... ae See
Plast HOOk TOS User cies c.0 cteruecshs ig cle uu oud Wie phous etmeieael hee 5G
Check Voice Deviation During Manual Cellular Test .7 ee ho Py
Terminating Manual Celtatar fest 0.2.6.4 .2002s 455-6 et fs
Manual Cell-to-Mobile Call and Auto Handoftf Test: .] am Bef
Supervisory Audio Tone (SAT) Measurement ........~.. 223m 5-83
Signal Tone ‘Meas r Gime nti oc ie piss: cdi sno enin is <i npeneys ee ages 5
Manual UUT Regist rages Offs ue ee eee aoe bn: a 5-65
No-Coax Mobi le-t0= Gel Vaal Ie cnr oe oie ee ces 5-87
No-Coax Ce Ll= to Moby Je Ad) tie ioe teeipee ace ain els eae ieee > oe
Cetlular Auto Test, Procedure oie. cue «5 chepecte cele en 5-30
Error M@SSag eS Wiss bas Mawes = cine Cre iehae ae sane ee eee ee 5-96
Test. RESUITS REVUGW 26 cw cue wae cops cals pe ee 5-97
RS-232 RemoterCel lular (Comands Ooi... 0 ore ai a ous 5-200
Appendix
Appendix A
Appendix B
Appendix
Appendix
Appendix
sulle apd 8s) Sire,
Appendix
Appendix G
Appendix H
Figure No.
eel
ere
org
wha
APPENDICES
Title Page
See Uae arte iG. ere ek eu A ee I le k's gle ee egede oO Ys Aloe. lw AL
Tabe! ors sear 1/0 PortsiConnvectors
Pia imei Chem MCRIC Gar eter ch rel a Gemma o.2 18 eer ae a Gh aioe ka 4 oibaiiiel cafe ohe IS Sat Bed
MORINURILLIMEL Cxade Oe MONI Cr OURO CKGN, oc Lats och odo 6 lcd «4 of ok etunetleh duehardievel end ot Crd
ERA ME QUTIE MIE NCCIYIRG br TOMINGM te Rt Ao Res 6 tn FF edie < Care ae ole oh eNaricl ghd argh naeloh D+]
Rearac Mrmndm rr O Cems VOMEN G Too eu care cc 2 Bed FF e 6 all ative dste aa ed See
Trunking Test Systems Channel Number Transmit/Receive.
SMMC Ae eT eee PI earns Cate Lh ee othe Maal st Patina as ona ollotw? oath aime
Cellular Channel Numbers and Frequencies (AMPS) ........ irik
Total Access Communications System (TACS) Cellular
Telephone Channel Numbers and Assigned Center
EC CAST AS Wen ES ee Pee ae ae a OPO, OF ey le te rn oe scouts
Title Page
Pe Are ee ee AS Ce Ope fe mG, Deca Sue Beale he aalalare ts "a holelefetele sralalale S Les
PPR rer Ae FOE EST Gl Fuhr ke oC arctatatchllat ate ie) ot asaByte e wlateteateleacataralors ond
Paw PUweree SOC TL SWE LOCO E WMO otc cas ship nis ss eteletetetale™erete lal 4 Eas
FM/AM~12008S/ AS Front oPanel Controts,
EGRNeCLOrS (Siem wham ka CONS... 0 OMAR: ie dba a eb de casein eee eg Reps
cls a Casenunty OA ON teh JO Sem fate agin Cotte Bt eee Ue Ce keeh ce Sidhe weieie a a side Shes,
PMV AM- 1200 SHAY Gears Pane nGOnvectorswosd.eieoal.. cove. we sn al
Vey DOatieatto er D fray OU Bae aace em Seer le ee POM se ee ks Cg is
FM/AM-1200S/A Front Panel Controls
Ap 1 Ca pee= iow He Caner! Oye Pat pie te a ec tecats tere Wis late cee wees ho S 4-298
PMyVAM=-2200S/A" Front Panel. Controls Applicable
PO URE eaote | soenera LOR CODE ROE TO Nw aAtG dow. gash ss sce dea oS 4-34
FM/AM-1200S/A Front Panel Controls
ADD ia. Cop ter oy DDT ex’ Opeivat yons abe he We 8 nade be ore ees 4-40
FM/AM-1200S/A Front Panel Controls
POP Vice mie TO UStt LiOscope Opendt bon <2... ee eee eee eS 4-44
PMY AM 1200574 Front Panel? Controls
Appt VveabLe EORSpEechrumnAnahyzeh Opehat Tom ass «.a.e ese an 4-47
NE ERE | BSTC ET NE at, grok el)» op As oh dee ee 4-48
Geverote, 2Wotir Ter NS La | hay nent: 2S PSF AP eau. . oe cuss ane
FM/AM-1200S/A Front Panel Controls
PObr cere Oop raita hs VO Lihat ena Oper avian Gt. k 1k. 6 cee a 5-4
1
Figure No. Migee n Page
oe) PMLAM= 1200S 7A (Fromt Pantelh Controls
Applicable to DIMF Decoder Operation... ou eee tere
2 ee FM/AM-1200S/A Front Panel Controls
Applicable tic. Tinacking. Generator, Operas onda. ..3. 4 see 5. 71 ]n6
os Typrcal STracking Génerater Display tof za
Notch Filter noten i230 week secs beet eicre Be ae ee ale
oats) Simpte Handshake Sequence... Syieoeaaekk oem oe nke- oo oe 5-46
7 HandoTt Ff S€QwWen Ceri cog aes cy reekc rod ue o he ore te ee eae FY)
5-18 EM/AM=-L200S Front_Praned Controis
App?tcab le tol punk ang Chest (Uperati ons... 5. wa. 16s see 5-48
59 FM/AM?12005 \FPron@ePanéetacongrols
Applicabie* to Celtutar Testing Operations... 2... 2. Hea «i
5-9a Manuaj OUT. RequStration” Printout (AMPS 4.0)... ..5) 5-o6
B10 AMPS: Get Tapas: Sse s Pere FOr ieee 3 eres teerar cates 5-95
ee ETACS Ce@) jashare hese? Oran out “Forint. eck 4... . 25... <n 2 5-82
Bt MIC/ACC Connector Pin Identification (Front View) cae B-2
Baz GPIB COMAWMG@CE Ol ws. ox vie Becquseetes am scenes ot aie ee Sect B-4
(any Performance Test Set-Up Viagram cat 6 v4. 6 ee Gz
Et Repacking Tor “SHiTOMeGS ose ee eee: San ee eee ez
Table No. Ta tae Page
Seg | Modulation GSETeect nConteobvPes it rons: vee, 02! .4... 5 ee 3-8
6 ers ModubationaMeten.ControloRosittens’. 2 22eee4. 73s ue g=3
S23 Horizontal Sweep Selector Control Settings ......... oa 3-8
A<)} Programpdemne gy ( LOCaULONS ome Adee Sess eee ace = 4-8
Hie 2. List.of Current ocS *G0des <br Aee. etek. ca we ee 4-24
A s FM/AM-1260S/A Front Panel Controls Applicable
to Receiver Operation 2.2037 Pew Yah ee oy > 4-28
4-4 Receiver Monitoring Capedi tit tées Nyse. Ce eee q-28
Ai) Moduletionw Select Control POs it vOns 2. ern) e ue 4-3)
4-6 FM/AM-1200S/A Front Panel Controls Applicable
to RF Sianal Generator OPSreei on nk ool eae . e 4-34
Aey Receiver Monitoring Capabilities
of. Generated OURPUTD PEAR eR Te ee eee q- 35
4-8 FM/AM-1200S/A Front Panel Controls Applicabie
to Daplex Operation 2. ee. tig BAe tee a oe 4-40
06
Table No.
4-9
Title
FM/AM-1200S/A Front Panel Controls Applicable
uO orci eel OC) On GF a Ge DONT cra fact he codes ae “clogs? 4 6 aku: c.csegs. cutpdl w.'s wos. bissepbne’
FM/AM-1200S/A Front Panel Controls Applicable
nO Sipe, SaumrnAmerliyzer <pewatirops eee sca Nehis. 28 F064 le.
Horizontal Sweep Selector Control (Analyzer
Te oe romtacei et, CG) Terie SG Lit. ONG) a alge ak cel cle ave. al « exsadhe elie audgece 4 deeisce' os
lower Oma nd SPrOriWd tS it. we ee ee cle ck BE eee 8 Boe OPO cas
Reena Ce MOL Co AHO MN TRUS 2) inc ete eles oe heen lc boul oot a eee bile Cae ale
FM/AM-1200S/A Front Panel Controls Applicable
Oem Oiemevelr (OVE bE kOW cue ate t6 coe bie seo dues aw dale
FM/AM-1200S/A Front Panel Controls Applicable
Poche Decoder, Operation ....... ee Ee ey ee ek
Oat reer tae CLP OL Te cy as Ra IES. © ick es che clas eer amma ahe cia ay no othe Alls a oii de dlp
FM/AM-1200S/A Front Panel Controls Applicable
Arie) GeOeraLOr ONE rat 1:00) 2c. SPR eee. cee gl Oe
lommzontal sweep Selector Controly{Anadyzer, Dispersion
LOmUrony, s6ccings. and HOriZOn tal’ SWee Pas DE EMe cr ules 6 al o> 5
ieaominee he rare s coc TCOMMANG Sta. < fete és ou ao 8 Su le oe Ga
Disb Secee 97. Se BUS Messades) 4 tad. syle he kes. ky ed sad ne PRE
Syd 8 Meh DSN Ww NS Big pT a Aa | oa it nae pa etna en naa
Ciera ce MINI BP OO ING: Ceemioy aia a Rtas Sido EADS Soe Wel Sy ere alee cages “Gwe ee
[Pee MIRE ee es eRe Pe solcheie, all gical Syn inie; solv i a MRE we ewe! ae
PMA AMZ LZ2OOs Front Panel Controis Applicable
Ree cere aon WES Cr CISEN OG 0 SEh teers, o orue cee en wee Ning ee sie es apes A ae
FM/AM-1200S Front Panel Controls Applicable
LOVte litenet Tes tant ODexsyationstec: @ hoswets cee ys he Se. wees.
RSorod Meme teuceriiboar Vesm a WO COMMON Sion ek ee 6 ak meh s aoe.
PAD te: SOR ee Or CSe ir. oD oe OT. ee. MRR Gale SU. elie.
Mit sACEAROnnector Pay ASSAQNMENES «. she Peta e fe ce daj-).6S 4 es
Ro SecOc mum eCLOT F hh, ASSTONMeNE s COLONG OL Oo cc's a wens ee
RS -Coceconmector Pit Assignwhents withrCed lular
Recomm peroneen) TASTE LLEGs. Cun 6 x crs we ae ee oe ee lee hae es
ee eee Or Oe ea SS 1 IMS PSs fila, axa ts galo Ga cat Sees % © neyo & cysyte ee @ tee 2
Tein enamire tt OW Fre aguernc Vy "BQN «Po. ccc. ce gs ee he es ele es
PEencOMOseHOnneb Teme rRequency® Band: .22.. 26 6k e eee es
X17
06
a
06
Cellular Channel Numbers and Assigned Center
PreGweniciies 2 [Whee OF RRS Se AAS SS tee eee G-1
Total Access Communications System (TACS) and Enhanced
Total Access Communications System (ETACS) Cellular
Telephone Channel Numbers and Assigned Center
F PON U SCV. ick Soars ake SA we cs © See tas ree ge tote ane oe ee nen ee Hg
SECTION 1 - INTRODUCTION
Lat GENERAL
The FM/AM-1200S/A is a microprocessor controlled, digitally synthesized
communication service monitor, which integrates the functions of several
different test instruments into a single, compact and portable unit.
Utilizing such features as a keyboard entry system, a Vacuum Fluorescent
Display for digital readout, processor controlled memory functions, a
CRT capable of displaying oscilloscope inputs and a DIMF encoder used
simultaneously with the variable audio generator for audio tone
encoding, the FM/AM-1200S/A incorporates the functions of the following
test equipment:
Signal Generator Frequency Error Meter
Communication Receiver Modulation Meter
Digital Voltmeter (Option) SINAD Meter
Oscilloscope Audio Error Meter
1 kHz (Fixed) Tone Generator Signal Strength Meter
Variable Tone Generator DUPLEX Generator (with
(Programmable) a selectable offset)
DTMF Encoder Spectrum Analyzer
DIMF Decoder (Option) (FM/AM-1200S only)
Power Meter Tracking Generator (Option,
FM/AM-1200S only)
These capabilities enable the FM/AM-1200S/A to be used in a wide range
of communication test functions associated with most types of simplex
and duplex transceiving equipment, including mobile telephone systems,
AM/FM/SSB transceivers, CB and two-way radio systems, repeaters, etc.
1-2 SIGNAL GENERATOR/RECEIVER
The FM/AM-1200S/A Signal Generator is capable of generating modulated or
unmodulated carrier signals within a range of 250 kHz to 999.9999 MHz
(in 100 Hz steps), at an output level which is continuously variable
from -20 to -127 dBm. The generated carrier signal may be AM or FM
modulated by internal modulation signals from the FM/AM-1200S/A tone
generators or by external sources applied through front panel modulation
input connectors defined in Section 3 of this manual. The signal
generator may also be voice-modulated and keyed through the front panel
microphone input connector. All of the above described modulation
sources, or any combination thereof, may be simultaneously applied to
the carrier signal. During signal generator operation, signals being
generated can be monitored by the FM/AM-1200S/A receiver and its
associated monitoring devices.
The signal generator also features a selectable offset frequency func-
tion to permit testing of duplex equipment, which receives and transmits
simultaneously on different frequencies. See paragraph 1-3 for addi-
tional information about this feature.
The FM/AM-1200S/A receiver is a triple conversion, superheterodyne
receiver, capable of monitoring communication signals within a range of
250 kHz to 999.9999 MHz, in 100 Hz steps. Signals may be received
“off-the-air" using an external antenna or by direct cable connection
through the front panel T/R Connector. Associated receiver monitoring
circuits include a frequency error meter, modulation meter, power meter,
SINAD meter, Signal strength meter, frequency error and demodulated
audio counters, oscilloscope and spectrum analyzer (FM/AM-1200S only).
1-3 FM/AM-1200S/A CAPABILITIES
A prime feature of the FM/AM-1200S/A is the capability of testing both
simplex and duplex communication equipment. Simplex operation is
defined as any equipment that communicates in only one direction at a
time on the same frequency, including ordinary transmit-receive or
press-to-talk operation, voice operated carrier and other forms of
manual or automatic switching from transmit to receive. Duplex opera-
tion is characteristic of any equipment which transmits on one frequency
and receives on another frequency between two locations, such as mobile
telephone systems and repeaters.
In receive mode, the FM/AM-1200S/A receiver monitors incoming signals
received "off-the-air" or applied via direct cable connection through
the front panel T/R Connector. In this mode, the FM/AM-1200S/A signal
generator is inactive. In the generate mode, the FM/AM-1200S/A is
capable of generating modulated or unmodulated carrier signals while the
receiver circuits are simultaneously monitoring the generator.
In the duplex mode, the FM/AM-1200S/A has the capability of generating
and receiving signals simultaneously. While the receiver section of the
FM/AM-1200S/A is monitoring incoming signals transmitted by the UUT, the
FM/AM-1200S/A duplex generator is simultaneously generating signals to
stimulate the receiver section of the UUT. The frequency of the
generated signal from the FM/AM-1200S/A can be offset up to +49.99 MHz
from the receiving frequency in 10 kHz steps. Three methods of duplex
testing are available using the FM/AM-1200S/A. They are:
Duplex Testing using separate Transmit/Receive Lines
Duplex Testing using one common Transmit/Receive Line
"Off-the-air" Duplex testing
The methods of duplex testing are described in detail in Section 4.
1-4 DATA DISPLAY AND CONTROL FEATURES
Operator interaction with the FM/AM-1200S/A is facilitated through the
following primary data display and control features:
A. KEYBOARD
The Keyboard provides a means of entering data into the FM/AMN-
1200S/A microprocessor, to control the operation of the RF Fre-
quency or Tone Generator functions. The Keyboard is also used to
address the FM/AM-1200S/A programmable functions which utilize the
automatic storage, retrieval and execution capabilities of the set.
All Keyboard functions are described in detail in Section 3.
BED
The Vacuum Fluorescent Display (VFD) is used to display the current
Keyboard operating frequencies associated with the FM/AM-1200S/A
tone generator or RF Frequency functions. The VFD will display any
telephone number selected during DTMF or IMTS functions (Ref. Sec
tion 3), provide a digital readout of the selected range of both
the FREQ ERROR and MODULATION Meters or display Digital Voltmeter
readings.
1-5 GENERATOR/RECEIVER SUPPORT FUNCTIONS
The FM/AM-1200S/A has the following additional operating functions which
are primarily used to support the generate/receive capabilities of the
set:
Digital Voltmeter (Option) Fixed Tone Generator
Oscilloscope Programmable Tone Generator
Modulation Meters Freq Error Meter
Spectrum Analyzer (FM/AM-1200S Only)
The application and use of these functions are described in detail in
Sections 3 and 4,
1-6 AVAILABLE OPTIONS
In addition to the standard features of the FM/AM-1200S/A, several
optional features are available. These include:
.05 PPM Frequency Standard European Signaling
Generate Amplifier (ENCODE/DECODE)
Microphone Tracking Generator
Telescoping Antenna General Purpose Interface
Soft Padded Carrying Case Bus (GPIB)
Digital Voltmeter/DTMF Decode Trunking Radio Testing
Cellular Telephone Testing
For a more detailed description and operating procedures, turn to
Section 5%
1-3/1-4 Blank
05
the. FM /AMs LEORS AA ‘6 ara F | one
fccetver, HBOADLEOALE Raa oot yy 1 res
a ee ~ Pi at ahr a ore ie | ne Nl ae * ie 4
aleehey ety VSLBP EL oR arI. ANE io
curiae coat pera. Gp ae
: hag d ty Vw he i i Con
a ns : ry Py : ey os cle Neat tse yy ; tbe. ’
o% as GA ey : be gt ah ay & a yf te Be a4 b ene Vo! tat e oh VOR ;
Ne CSO TL Eas De an 1g Ate Oyen e
v0 oe eEQb aa? Gade ome eOe We 4% ReNbOng
( fw 2t, Senotveh gah >: ead) bane seteieede eAot #o.
; f y ) 1 ae a e ore “t s a ik GH +3 oo MAAMA ahd fae \
‘pe 2.43 YORRAATE © He ee GE I44 |, SYBLOFe yo Pane
. 4oR ab ah. ehotioauy Prsodyae
This ie as J# d 44 . at ae c? cent
} ’ mH at ‘am + ¢ Je oar = ] CD
. ena Ss a vnula MOD Dene
| to beeiitte dilyatad se aeSoe pyOvta APRp eam
' ; 4 r - AE, Be Ds 2 oO oD ? Us: eb F 45 ea 19,202 | a
ey 1st re 7 es wy UP SOA Paw Ox Dob Pees ;
ia Pe ona 24 a? SF OP sonpyn SEN,
' 3 y ad yt ae ie as 7 j a F ey - 2 ah, ¥y ) 40 re: :
4 xy . A Le ie ce @ ’ ; 394
. ae ranT
e F
t
ng
g
z=
<
c
’
t
=
ws
—~
ow]
=
-
-
‘ + ’ eF «
4 ‘ 3 | r+ 3 “an % KG! ; b
{ wat
ox AeLNA
avorT? ead Als vA
’ ine HmGmth shee ine raptens
t ‘KLM RHE QO ae Loan here ba hee > Gye 000 Fl
<7 = tie wafae, ? aww 976 25707647
OFF PONG jesur toate detud) te Sage ae
ont Penntrd a Cowes Pa Or pha are YIN eb! “gs, ats
37\ 160703) ete? lanl es erga
fe id A 4 a a ay puons te
20c'% a Tevanea AUN GINA oni Vere oT SF)
Bie) ang . e£e2 ONY TIAL bobs WT) of
pe bso Pinna rT sbasuG AAT S93 mt Tay revheng
ot nut ,2ovwhaneg, patingade Bae aelagi ieee bathnsae
SECTION 2 - INSTALLATION
21 GENERAL
This section contains information on preparing the FM/AM-1200S/A for
use, along with installation and operating precautions that will assure
safe and trouble-free utilization of the unit.
2-2 PRECAUTIONS
For operator safety and to prevent possible damage to the FM/AM-1200S/A,
the following operating precautions should be observed at all times.
THE FM/AM-1200S/A CHASSIS AND CASE MUST BE
CONNECTEO- TOuPEECTRICAL GROUND.» “CONNECT, *THE
FURNISHED AC POWER CORD TO A PROPERLY GROUNDED
3- PIN RECEPTACLES THE USE OF “A 3-PTN FO" 2-PIN
ADAPTER (PARALLEL GROUND ADAPTER OR ISOLATION
PLUG) IS NOT RECOMMENDED.
(cAUTION|
ANTENNA CONNECTOR
THE ANT CONNECTOR IS USED FOR "OFF THE AIR"
TESTING AND WITH THE OPTIONAL GENERATE AMPLIFIER
ONLY. DO NOT CONNECT A TRANSMITTER TO THIS
INPUT. MAXIMUM INPUT INTO THIS CONNECTOR MUST
NOT EXCEED 0.25 WATT OR DAMAGE TO THE
FM/AM-1200S/A WILL RESULT.
T/R_ CONNECTOR
JACK OTHER THAN THE T/R CONNECTOR.
MAXIMUM "ON" TIME FOR MEASUREMENT OF UUT
TRANSMITTER OUTPUT USING T/R CONNECTOR IS:
450 FOXUSOIW 4 SH UMINUTE “ONS SoMPNUTES “OFF”.
¥
50 W = MAXIMUM CONTINUOUS
2-1
02
DUPLEX OUTPUT CONNECTOR
DO NOT TRANSMIT INTO THIS CONNECTOR. THIS
CONNECTOR IS NOT PROTECTED FOR POWER INPUTS IN
EXCESS OF. OSZ SRW A Fis
CRT INTENSITY
DO NOT OPERATE CRT DISPLAY WITH EXCESSIVE
INTENSITY.
SCOPE CONNECTOR
THIS CONNECTOR:
PWR/OFF/BATT SWITCH
MEMORY CONTENTS, ALLOW A MINIMUM OF ONE SECOND
BETWEEN SELECTION OF "PWR" AND "OFF" POSITIONS.
DO NOT RAPIDLY CYCLE POWER ON AND OFF.
IF THE FM/AM-1200S/A IS PLUGGED INTO A VEHICLE'S
DC. SUPPLY, DISCONNECT THE SET WHILE STARTING the
ENGINE.
REMOVE ANY POSSIBLE STATIC CHARGE FROM AN
UNTERMINATED ANTENNA BEFORE CONNECTING TO THE
FM/AM-1200S/A ANT CONNECTOR. THE T/R CONNECTOR
MAY BE USED FOR .THLS PURPOSE.
DO NOT FORCE RF .LEVEL CONTROLS «PAST THEsSTORPSs
Do not apply any signals into the FM/AM-1200S/A other than those defined
in the operating instructions. Other than the input power and operating
restrictions described above, any combination of front panel control
positions will not adversely affect the FM/AM-1200S/A.
2-3 PREPARATION
Preparing the FM/AM-1200S/A for operation is a simple procedure which
consists of the following basic steps (Ref. Figures 2-1 and 2-2):
STEP PROCEDURE
L, Set FM/AM-1200S/A into a vertical or horizontal operation posi-
tion, with lid removed.
ae Apply electrical power to FM/AM-1200S/A as follows:
{CAUTION}
THE FM/AM-1200S/A IS SHIPPED FROM FACTORY WITH
THE AC: POWER: SELECT SWITCH INGIHE 115. Vat POs2-
TION. DO NOT APPLY EXTERNAL POWER ABOVE 115 VAC
UNLESS SWITCH IS POSITIONED GO .cs00 Ve RoR sec
URE 2-3) (REF. APPENDIX A, SPECIFICATION A-14).
05
SLEEP PROCEDURE
a i wn sn a i i nn nn a i nn nn OOOO OO OOOO’ OOOO. eee ee eee
VOLUME
rF
INT CONTROL
T— TONE GENERATOR—>
FM/AM-1200A
INT FOCUS HORIZ POS | Ss SS ul @"®:©"@
» @ 6 '
PWR/OFF/BATT SWITC T/R
CONNECTOR
SCOPE/DVM CONNECTOR DUPLEX OUTPUT CONNECTOR
Figure 2-1 FM/AM-1200S/A Front Panel
EXTERNAL AC Power
ue Connect furnished AC power cable between 115/230 VAC power source
and AC Power Input Connector on rear panel of FM/AM-1200S/A.
ap Place "PwR/OFF/BAl’ switcn to."PWR" position.
EXTERNAL DC Power
i Connect supplied DC Power Cable between external 12 to 30 VDC
power source and DC Power Input Connector on rear panel of
FM/AM-1200S/A.
Ais Place PWR/OFF/BATI Switch@to “PWR” position.
05
STEP PROCEDURE
ee es ce EE EE EE EE EE ET ET EE TT TT TE EE EE EE TS SE LS LS LT LS LS LS ST
CAPTIVE
SCREWS
CAPTIVE
SCREWS
Figure 2-2 FM/AM-1200S/A Rear Panel
INTERNAL Battery Operation:
1 Place PWR/OFF/BATT Switch to "BATT" position. (This is a
Spring-Loaded ON/OFF Switch.) When operating the test set on
battery, an internal timer will interrupt power after
approximately 10 minutes. Depress PWR/OFF/BATT Switch to "BATT"
positiom to resitore power oto Test. set.
The internal battery is charged whenever the test set
is connected to external AC or DC power, regardless of
whether the PWR/OFF/BATT Switch is in either the "ON"
or “OFF" position, «Typical recharge time is IZ nourcs
for a full charge. Minimum external DC input required
for full (ehage a$7. > VoC.
\NOTE}
The oven oscillator (Option 02 only) is powered
by the internal battery when the test set is
Switched to battery operation. In the battery
mode, there is no provision for preheating the
Oven. oscillator. A 15-minute warm-up period is
required, with the test set at room temperature,
in -order to stabilize the oven oscillator.
However, the FM/AM-1200S/A will turn on and
Operate immediately in the battery mode, but the
oven oscillator frequency will not be within
specifications without the required 15-minute
warm-up period. It is therefore recommended
that the FM/AM-1200S/A be connected to an
external AC or DC power source for the required
15-minute warm-up period.
2-4 GENERAL OPERATING DATA
The FM/AM-1200S/A Communications Service Monitor is shipped with the AC
Power Sevecty Switch- {Ref . °F igure 2-347 posTtiGned’ to “LI5S°VAC* Lo Tf it
1s
necessary to operate FM/AM-1200S/A using 220 VAC, the AC Power Select
Switch must be positioned to "230 VAC" prior to the application of
electrical power. The procedure to reposition this switch is as
follows:
Ray’ tom’
| , AS At cheep COVER
eva’
_fi)
aa ©
ar : AC POWER SELECT SWITCH
at}
es Se ae
Figure 2-3 AC Power Select Switch Location
2-5
02
2-5
PROSE DURES oe eee
CASE REMOVAL
Loosen four captive screws attaching rear escutcheon to Rear
Panel Heat Sink (Ref. Figure 2-2).
Remove escutcheon, then slide case from chassis.
AC POWER SELECT SWITCH POSITIONING
Remove two screws from Switch Cover Plate (with CAUTION placard)
to expose AC Power Select Switch (Ref. Figure 2-3).
Verify position of switch and, if necessary, slide switch jindica-
tor until desired power rating is visible (Ref. Figure 2-3).
Reinstall Cover Plate (Ref. Figure 2-3).
CASE INSTALLATION
Slide case over chassis and engage case in groove of front
escutcheon. Position rear escutcheon on case. Engage case in
groove of rear escutcheon and tighten four captive screws
securing rear escutcheon to Rear Panel Heat Sink.
EXTERNAL POWER INTERRUPTION PROTECTION
The FM/AM-1200S/A incorporates an external power interruption protection
circuit in case the external AC power is unexpectedly lost during
FM/AM-1200S/A use. After power is lost, approximately 15 seconds of
power will be available to complete or terminate a function.
3-1
4.
Ta FM/AM-1200S
VERT POS INT FOCUS HORIZ POS
peTaIL A
VERTICAL HORIZONTAL
FM/AM-1200S ONLY
FM/AM-1200S/A FRONT PANEL (Reference Figure 3-1)
NAME DESCRIPTION
MODULATION Meter
Provides a visual display of modulation levels, RF power levels
(peak and average), relative signal strength, battery test voltag
distortion and SINAD when selected by MODULATION Meter Control (4
e,
)
(See Figure 3-2.)
- Modulation Meter Zero Adjustment
Adjustment screw for mechanical zeroing of MODULATION Meter (1)
when power to FM/AM-1200S/A is "OFF".
MODULATION Select Control
Selects modulation and demodulation modes of FM/AM-1200S/A receiver
for FM, AM, SSB and their associated pre- and post-detection band-
widths as shown in Table 3-1.
MODULATION
SELECT CONTROL DEMODULATION PRE-DETECTION POST-DETECTION
POSITION MODE BANDWIDTH BANDWIDTH
AM
NAR 8 kHz
NORM 8 kHz
SSB 8 kHz
M
NAR 8 kHz
MID 200 kHz 8 kHz
WIDE 200 kHz 80 kHz
Table 3-1 Modulation Select Control Positions
Modulation METER Control
Selects input source for MODULATION Meter (1) as shown in Table 3-2
(Reference Figure 3-2).
3-1 Blank/3-2
05
| aaa NAME DESCRIPTION
MODULATION
1 (TOP SCALE)
10
2 (BOTTOM SCALE)
Figure 3-2 MODULATION Meter Scales
MODULATION
METER CONTROL ENPUT SOURCE
POSITION
T/R CONNECTOR
FM/AM-1200S/A
Demodulator
MODULATION
METER RANGE
MODULATION
METERS SCALE
Get THe ae ric)
15 WATTS. € talk
sc ailie)” Tov lSsd
watts. (full
scale)
kHz/%X10
CATT Positions)
2. kKHz..DEV/20%_ AM
CFU *$Ga Ven. ab
60 kHz DEV/600%
AM. (full scale)
BATT TEST Internal DR, tonn2 0 VDC i
Battery
SIG ANTenna Relative signal None; observe
Connector strength (not relative deflec-
calibrated) tion of meter
needle
Da ST EXT MOD/SINAD 1h Se os eet By | 1
Connector
SINAD EXT MOD/SINAD S- ab LO reu, Oo 4
Connector
Tabi 48 3-2) oO Modu lation Meterc€ontrol Positions
\NOTE}
For Accurate Power Meter measurements, set RF Level
Attenuator Controk«cCo) te ahy position others than
20 dm.
3-3
Figure 3-1 FM/AM-1200S/A Front Panel
1. MODULATION METER Cae
2. Modulation Meter Zero
Adjustment 24,
3. MODULATION Select Control
4. Modulation METER Control 25
5. VAR Tone Selector Switch
6. VAR Tone Level Control 26
Jeol tkH2 Tene selector Switch
Seek Koz one Level Control a.
9. RF Level Attenuator Control 2B)
10. RF Level Attenuator Vernier rides i
Control 30R
itv /R Connector Sill
12. AUX POWER Connector (Option 05 32.
Gen. Amp only) 33%
13. REF CAL Adjustment 34.
14. DUPLEX Output Connector eh
15. EXT MOD/SINAD Connector
16. DEMOD Connector 565
17. TONE OUT Connector of
18. Keyboard aGre
19. MIC/ACC Connector 39%
20. SCOPE/DVM Connector 40.
21. AC/GND/DC Switch (Scope) 4]
Zier BRLOFP/BALIASwitcn 42
SECTION 3 - DESCRIPTION OF CONTROLS,
CONNECTORS & INDICATORS
VERTICAL HORIZONTAL
=!
mS/DIV ere
eh)
Controls,
Connectors & Indicators
Scope VERTICAL Attenuator
Vernier Control
VERTICAL Attenuator Selector
Control
HORIZONTAL Sweep Vernier
Control
HORIZONTAL Sweep Selector
Control
VERIMeOS-Control
INT Control
FOCUS Control
HOR POS, Control
CRT Display
GEN/LOCK Control
LOCK Lamp
ANT Connector
FREQ ERROR Meter Range Selector
Control
FREQ ERROR Meter
. VFD (Vacuum Fluorescent Display)
FREQ ERROR Meter Zero Adjustment
MODE Selector Control
VOLUME Control
SQUELCH Control
SIG Indicator Lamp
4.
VERT POS INT
petaiL A
VERTICAL
FM/AM-1200S ONLY ©. 1
FM/AM-1200S
FOCUS HORIZ POS
o@
HORIZONTAL
FM/AM-1200S/A FRONT PANEL (Reference Figure 3-1)
NAME
- MODULATION Meter
DESCRIPTION
Provides a visual display of modulation levels, RF power levels
(peak and average), relative signal strength,
battery test voltage,
distortion and SINAD when selected by MODULATION Meter Control (4).
(See Figure 3-2.)
- Modulation Meter Zero Adjustment
screw for mechanical
to FM/AM-1200S/A is
Adjustment
when power
MODULATION Select Control
Selects modulation and demodulat
for FM, AM, SSB and their associ
widths as shown in Table 3-1.
MODULATION
SELECT CONTROL DEMODULATION
POSITION MODE
AM
NAR AM
NORM AM
Md
NAR FM
MID FM
WIDE FM
Table 3-1
Modulation METER Control
Selects
(Reference Figure 3-2).
3-1 Blank/3-2
05
input source for MODULATION Meter
Zeroing of MODULATION Meter (1)
"OFF",
ion modes of FM/AM-1200S/A receiver
ated pre- and post-detection band-
PRE-DETECTION POST-DETECTION
BANDWIDTH BANDWIDTH
6 kHz 8 kHz
15 kHz 8 kHz
8 kHz
15 kHz 8 kHz
200 kHz 8 kHz
200 kHz 80 kHz
Modulation Select Control Positions
(1) as shown in Table 3-2
Lien NAME DESCRIPTION
MODULATION
1 (TOP SCALE)
10
2 (BOTTOM SCALE)
Figure 3-2 MODULATION Meter Scales
MODULATION MODULATION MODULATION
METER CONTROL INPUT SOURCE METER RANGE METER SCALE
POSITION (Ref. Fig.
TS WATTS CEG]
T/R CONNECTOR sc ait'e)* toe SU
watts (ful
scale)
FM/AM-1200S/A 2. KHZ,, DEVS 202._ Au
Demodulator CFU sca bedu.to
60 kHz DEV/600%
AM. (ful b scare)
kKHz/%X10
CATY 9Posit tons,
1 &«2
ANTenna
Connector
None; observe
relative deflec-
tion of meter
needle
Relative signal
strength (not
calibrated)
DA ST EXT MOD/SINAD 0% to. 20% 1
Connector
SINAD EXT MOD/SINAD ~o bya YS 8 lowed feat 3! 4
Connector
Tabt eno) PY Modulation Meter: Control’ Positions
NOTE]
For Accurate Power Meter measurements, set RF Level
Attenuator Control <>) te any position’ other than
=2 0 “Ob.0,
3-3
ITEM
oe
jas
10.
1
NAME DEOCR IP LUN
VAR Tone Selector Switch
Selects variable tone as follows:
"INTL" - Internal modulation of generator output, and TONE OUT
Connector (17). TONE OUT Connector (17) and HORIZONTAL
Sweep Selector Control (26) in TONE Position.
"OFF" - Disconnects tone from internal modulation, TONE OUT
Connector (17), HORIZONTAL Sweep Selector Control (26) and
Speaker.
"SPKR" - Variable tone will be routed to the FM/AM-1200S/A Speaker
only.
- VAR Tone Level Control
Gontroals.svaniable tone evel:
Loki Selector on (len
Selects 1 kHz fixed tone as follows:
"INTL" - Internal modulation of generator output and TONE OUT
Connector (17). TONE OUT Connector (17) and HORIZONTAL
Sweep Selector Control (26) in TONE Position.
"OFF" - Disconnects tone from internal modulation, TONE OUT
Connector (17), HORIZONTAL Sweep Selector Control (26) and
Speaker.
"SPKR" - 1 kHz fixed tone will be routed to FM/AM-1200S/A Speaker
only.
- 1 kHz. Tone Level Control
Controts 1 kz Ti xed tone level.
- RF Level Attenuator Control
Controls RF output level of the FM/AM-1200S/A signal generator in
10 dB steps.
RF Level Attenuator Vernier Control
Provides fine adjustment of RF Output Level of FM/AM-1200S/A Signal
Generator, as indicated on dBm/uv scale.
T/R Connector
Generator/Receive Connector.
{CAUTION}
DO NOT APPLY MORE THAN 150 WATTS TO THIS CON-
NECTOR. IRREVERSIBLE DAMAGE TO INTERNAL COMP ON-
ENTS OF FM/AM-1200S/A MAY RESULT.
pA ene 1 8 Sr Ld
12.
VgciA
14.
bom
16.
i ae
138
ee
Pn AIR TR de eae 8 0) 2 Pe
AUX POWER Connector
+12 V is applied to this connector in Generate and Duplex Generate
modes (for the Option 05, Generator Amplifier Only).
Output Connector (FM/AM-1200A Only) at the selected offset fre-
quency. For the FM/AM-1200S, the output is -15 dBm (+10) when in
DUPLEX HIGH mode and -25 dBm (+5 dB) below the DUPLEX HIGH output
when in the DUPLEX LOW mode.
In the Tracking Mode (FM/AM-1200S only with Option 12 installed),
the output is -5 dBm (+3/-5 dB) in TRACK HIGH mode, -15 dBm (+7 dB)
in TRACK MED mode and -40 dBm (+5/-10 dB) when in the TRACK LOW
mode.
EXT MOD/SINAD Connector
Allows application of external modulation when "Generate" Mode is
selected. Permits measurement of UUT SINAD and/or Distortion when
Modulation METER Controt®(4)<°is*posittoned to -"“SINAD" or "DIST".
DEMOD Connector
Allows external scope monitoring of the demodulated received or
generated audio signal.
TONE OUT Connector
When either VAR Tone Selector Switch (5) or 1 kHz Tone Selector
Switch (7) are positioned toe"INTL"; variable, fixed or both tones
are present at this connector.
Keyboard
Used for data entry and control of FM/AM-1200S/A microprocessor as
described in paragraph 3-3.
MIC/ACC Connector
in Appendix B).
iNoTe}
With microphone connected, depressing MIC Key
will automatically switch FM/AM-1200S/A
internally to generate mode if the Mode
Selector Control (39) is in receive or duplex
positions.
04
jG 3 el | he
ZOE
ou
dee
Cros
24.
04
DESCRIPTION _
OD RS ee ee ee te ne ne nD ne oe oe eee om eee.
SCOPE/DVM Connector
Oscilloscope or DVM external input.
[CAUTION}
DO NOT APPLY MORE THAN 100 VDC, 100 VRMS OR A
COMBINATION OF 50 VDC AND 50 VRMS TO THIS
CONNECTOR.
AC/GND/DC Switch
Allows selection of AC or DC coupling of oscilloscope external
input.
PWR/OFF/BATT Switch
Applies/interrupts power to FM/AM-1200S/A as follows:
"PWR" position - FM/AM-1200S/A is powered by external AC or DC
power source,
"OFF" position - FM/AMN+1 2008/40 15 2Orr.
"BATT" position - FM/AM-1200S/A is powered by internal battery
(This is a momentary spring-loaded switch to the
"OFF" position).
Internal FM/AM-1200S/A battery is continuously
charged when external AC power or external DC
power, ABOVE 15 VDC, is connected to set,
regardless of PWR/OFF/BATT Switch (22) position.
Divides vertical attenuator rate by a factor of from 1 to 10. In
the "CAL" position (fully cw), the factor is 1 and the attenuator
rate is as selected by the VERTICAL Attenuator Selector Control
(24). In the fully ccw position, the factor.is 10. In anysamtere
mediate position, the factor is between 1 and 10.
Turns power "OFF" to Scope Display.
kKHz/%x10 - Allows selection of internal demod audio
Signal.
V/Div - Allows selection of Scope/DVM Connector (20)
inputs.
RESID - Displays residual distortion when MODULATION
Meter Control (4) is positioned to "SINAD" or
8 Bt cee Gu
peEN oe
20%
265
_NAME DESCRIPTION
OS EE ES SS ee ae eS ee Ce Ee ee a ee ee ee
Divides horizontal sweep rate by a factor of from 1 to 10. In
the "CAL" position (fully cw), the factor is 1 and the sweep rate
is as selected by the HORIZONTAL Sweep Selector Control (26). In
the fully ccw position, the factor is 10. In any intermediate
position, the factor is between 1 and 10.
HORIZONTAL Sweep Selector Control
FM/AM-1200A Only - Selects horizontal sweep rate of the oscillo-
scope. This control functions as follows:
TONE position - Oscilloscope horizontal sweep is driven by
waveform output of tone generators.
mS/DIV positions - Represent oscilloscope sweep rate in milli-
seconds per division, when Scope Horizontal
Sweep Vernier Control (25) is in CAL position
(fully clockwise).
S/DIV positions - Represent oscilloscope sweep rate in micro-
seconds per division, when Scope HORIZONTAL
Sweep Vernier Control (25), is in the CAL
position (fully cw).
FM/AM-1200S Only - Selects horizontal sweep rate of the oscillo-
scope or dispersion of Spectrum Analyzer.
Dispersion Control functions as follows:
TONE position - Oscilloscope horizontal sweep is driven by
waveform output of tone generators.
mS/DIV positions - Represent oscilloscope sweep rate in milli-
seconds per division, when Scope Horizontal
Sweep Vernier Control (25) is in CAL position
(fully clockwise).
\NOTE}
The Spectrum Analyzer operates in the following
positions:
MHz/DIV positions
kHz/DIV positions
04
AT EM
alae
(he
Hs)
30)
ati.
cya
3-8
_NAME_ __ DESCRIPTION
ee ee eS ee ee ee ee ee ee ee
HORI ZONTAL/DISPERSION
BANDWIDTH
lLokH2/ DIV
2 kHz/DIV 3007 Hz
5 kHz/DIV Se khz
10 kHz/DIV se kHz
20) KH Z/DLY So Kriz
50 kHz/DIV 30 kHz
.l1 MH2/DIV 30 kHz
2 MHz/DIV 30 kHz
-5 MHz/DIV
1 MHZ/DIV
Table 3-3 Horizontal Sweep Selector Control
(Analyzer Dispersion Control) Settings
VERT POS" Comt ror
Controls vertical position of CRT trace in Oscilloscope and
Spectrum Analyzer (FM/AM-1200S only) functions. Spectrum Analyzer
function is attenuated and limits this control to nominal division
up or down.
INT Control
Controls intensity of CRT trace. Clockwise rotation of control
increases trace intensity.
{CAUTION}
DO NOT OPERATE CRT DISPLAY) (31) WITH EXCESSIVE
TRACE INTENSITY. PROGRESSIVE DAMAGE TO CRT MAY
Reo UL 3
FOCUS Control
Controls focus of CRT trace.
HORIZ FOS Controk
Controls horizontal position of CRT trace in Oscilloscope and
Spectrum Analyzer (FM/AM-1200S only) functions. Spectrum Analyzer
function is attenuated and limits this control to nominal 1 divi-
SiON Vert (OY ver gits
CRiDisp lay
Display screen for Oscilloscope and Spectrum Analyzer (FM/AM-1200S
only) functions.
GEN/LOCK Control
Allows the RF frequency to be slewed off frequency in Generate and
Duplex Generate. Acts as a clarifier when receiving SSB.
ITEM
Sam
34.
oa.
36.
oh.
ce
ao
NAME DESCRIPTION
LOCK Lamp
Indicates in the following manner:
Steady Light - RF frequencies are phase locked.
Phiri nce iGeN aOGK. GOntrol oseo ers. out! of the “LOCK” posit-
tion or FM/AM-1200S/A is experiencing a
malfunction.
ANT Connector
External Antenna Input.
{CAUTION}
TO PREVENT DAMAGE TO FM/AM-1200S/A INTERNAL
COMPONENTS, MAXIMUM CONTINUOUS INPUT TO ANTENNA
CONNECTOR (4 )9MUST-NOT EXCEED 0.25 WATT.
ee ee a ee
Selects full scale sensitivity of FREQ ERROR Meter (36) between RF
and audio frequency ranges. The audio frequency error is
referenced to the Variable Tone Generator.
FREQ ERROR Meter
Provides a visual display of the difference between received signal
frequency and selected FM/AM-1200S/A receiver frequency.
Provides a visual display of the difference between the DEMOD audio
Signal frequency and selected variable tone generator.
VFD (Vacuum Fluorescent Display)
Provides display of selected Keyboard entries as described in
paragraph 3-3.
FREQ ERROR Meter Zero Adjustment
Mechanical zero adjustment for FREQ ERROR Meter (36), when power
tO eEMLAM-1200A is,"O0FE".
MODE Selector Control
GEN Position - Places FM/AM-1200S/A in the generate mode.
Transmitting into the T/R Connector (11), will
automatically change FM/AM-1200S/A "Receive".
REC Position - Places FM/AM-1200S/A in the receive mode to
receive through the ANT Connector (34).
DUP Position - Turns on FM/AM-1200S/A Duplex Generator, allowing
Signal output at DUPLEX Output Connector (14)
and T/R Connector (11). However, the FM/AM-
1200S/A will remain in the "receive" mode.
3-9
02
ITEM NAME DESCRIPTION
|NOTE}
Full receive capability exists, even when trans-
Mitting) intomly Ro Connectormm ) ).
DUP GEN Position - Places FM/AM-1200S/A into generate mode with the
Generator on and offset by a pre-programmed
amount.
INOTE]
In this position, automatic receive mode is
overridden when transmitting into T/R Connector
(11) with external transmitter. The DUP GEN
Output is only available at the T/R Connector
(11) with the level controlled by the RF Level
Attenuator Control (9).
40. VOLUME Control
ntrols volume of FM/AM-1200S/A speaker.
VOL
Co
Al. SQUBECH Contror
Controls receiver squelch threshold. Squelch disables audio out-
put, freq error and modulation indicators when RF input at ANT
Connector (34) falls below squelch threshold.
42. SIG Indicator Lamp
a ee ee ee ee ee ee
When illuminated, indicates input level at ANT Connector (34) is
above squelch threshold of FM/AM-1200S/A receiver.
3-2
FM/AM-1200S/A REAR PANEL
Figure 3-3 FM/AM-1200S/A Rear Panel Connectors
43. RS-232/GPIB (Option 13) Connector 45. DC Power Input Connector
Aa,
AC Power Input Connector 46. External Reference Connector
NAME DESCRIPTION
Female connector for interface with external RS-232 compatible
keyboard (Ref. appropriate Pin-Out Table in Appendix B).
AC Power Input Connector
AC power input connector for 105-130/210-260 VAC supply at 50 to
400 Hz.
DC Power Input Connector
re ce ee ee ee ee
DC power connector for 12 to 30 VDC supply.
External Reference Connector
Allows monitoring of 10 MHz internal reference frequency or the
application of an external 10 MHz reference frequency. The input
and output are automatically switched.
S=f1
03
\NOTE}
Automatic switching to. external source occurs
when an external 10 MHz reference frequency of
+5 dB, or greater, is applied at External
Reference Connector. DO NOT EXCEED % WATT
PNP UT,
KEYBOARD AND VFD DESCRIPTION
—_—_—$—_$—$—$—$————
SRST OR oe aac
ral
hh
jeore = —
Pd
DTMF 7 8 9 §
(oe) | (cm) | (em) | (am) | (om)
IMTS DVM BAUD INT 8) FUNCT
TONE 4 5 6 ¢ PROG
(om) | (| (comm) | (em) | (me) | (oom)
T SEQ OPT OPT OPT c METER
OFFSET 1 2 3 > EXEC
=) | | | (em) | (ee) | (oe)
CAN | 10PS 20PS OPT B STEP
RF 0 ° +/- - ENTER
Cenc Jae _JeeC_pe_get _
ocs % tt A
Figure 3-4 Keyboard and VFD Layout
me
2ND
The FM/AM-1200S/A Keyboard and VFD (Vacuum Fluorescent Display) provides
a means of entering data into the microprocessor to control the various
operating parameters of the RF frequency, tone generator and duplex
generator offset frequency. Normal Keyboard operation involves the
following three basic types of key entry sequences:
A.
execution.
EXECUTE MODE
EXEC Key entries allow retrieval and automatic execution without
edit capability.
The primary objective of this subsection is to familiarize the operator
with the methods of making keyboard entries. A complete description of
the Keyboard and VFD operation is located in Section 4,
3-12
05
The FM/AM-1200S/A Keyboard consists of 24 keys which provide a means of
entering data into the microprocessor to contro} the frequency of the
Signal generator, receiver, duplex generator offset and tone generator
Pure tions...
e>o-) FUNCTION KEYS
These keys determine what FM/AM-1200S/A function is selected by the
Operator. Most keys have a dual function which will select either the
Ist order functions (DTMF, TONE, OFFSET and RF) or ‘2nd order functions
aoe. 1 EU. SCAN. DVM, DCS, BAUD, INT, STEP, METER, 1OPS, 20PS and a
selection of 4 additional options).
Ist ORDER FUNCTIONS (Black Lettering on Keyboard}
These functions are used to set the operating paramezers of.
Dual Tone Multiple Frequency (DTMF)
Variable Tone Generator (TONE)
Duplex Offset Generator Frequency (OFFSET)
Signal Generator or Receiver Frequencies (RF)
2nd ORDER FUNCTIONS (Blue Lettering on Keyboard)
All second order function keys must be preceded by the "2ND FUNCT" Key.
FREQ ERROR and Modulation Meter Indications (METER)
Mobile Pulse Dialing/IMTS (IMTS)
Tone ON/OFF Duration Selection (TSEQ)
RF Program Function (SCAN)
Digitally Coded Squelch (DCS)
Step Function (STEP)
VFD Intensity (INT)
Digital Voltmeter (DVM)
Variable Pulsed Audio @ 10 PPS (10 PS)
Variable Pulsed Audio @ 20 PPS (20 PS)
BAUD Rate Set (BAUD)
FM/AM-1200S/A Future Expansion (OPT)
\NOTE}
For a detailed explanation of the Variable
Pulsed Audio Feature, based on the 2805/1500
type signalling system, refer to paragraph
4-4-9,
Bes
02
3-3> 2) 0 SNS TRUCTION aK EVS
These keys instruct the FM/AM-1200S/A processor to perform a specific
operation or function to permit the execution of a key entry. Specific
key functions are as follows:
2ND FUNCT Key - Conditions the FM/AM-1200S/A processor for a 2nd order
function entry; this key must precede the 2nd function
entry. When this key is depressed, the VFD will
display "2ND FUNCTION".
PROG Key
Allows entry into the programming parameters of the
FM/AM-1200S/A. All Keyboard entries are immediately
displayed on the VFD but will not be executed by the
processor.
EXEC Key Retrieves stored data and automatically executes the
data.
ENTER Key
Instructs processor that the preceding key-in Sequence
has been completed (i.e., RF Freq's, DTMF Sequences,
etc.). Depress ENTER Key twice to exit from execute
mode and return to the direct mode.
3-3-3 CURSOR CONTROL KEYS
The + and + Keys will move the cursor laterally within the VFD viewing
area for purposes of changing data values. To change a data value, the
cursor must be positioned directly on the desired character position
prior to making a value change. The * and ¥ Keys are used to increment
(4) or decrement (¥) any value positioned in the cursor and any adjacent
values which are affected by "carry" and "borrow" operations. In addi-
tion, the + or + keys are used to slew through the stored memory fields.
3-3-4 DATA ENTRY KEYS
These keys include standard numerical value keys from 0 through 9, as
well as eight special symbol keys which are used to enter:
ie Decimal point (Justifies Tone, Offset and RF Fields)
B. A change of sign (+/-) (Used with Offset, DCS and DVM functions
only)
te A, B, C, D, # and * (telephone associated symbols), used in
conjunction with the DTMF or IMTS functions.
|NOTE}
A, B;.C, D, # and. *-are also. used. for program
preset position selections 10 through 15.
These data entry keys must be preceded by the
2nd Function Key.
3-14
05
SECTION 4 - OPERATION
4-1 GENERAL
On power-up, the FM/AM-1200S/A initiates a memory check. If no error is
indicated on VFD (37), the last RF Frequency is executed and displayed
on VFD (37), indicating the test set is ready for direct operation.
The FM/AM-1200S/A has three modes of operation which are explained in
the following paragraphs. The three modes of operation are:
A. Direct Data Entry
By Programmed Data Entry into memory
Cs Executed Data Entry from memory
4-1-1 Mini-Index of Contents Within This Section. (Refer to Table of
Contents in Front of Manual for a Complete Listing).
Paragraph Title Page
KEYBOARD AND VFD OPERATION
4-2 Be eM ee NOT re eS eae week eisrar os sete bed eae bow Cb 4-2
4-3 rrugcammed aud (ohCrV rT ntor Memoryilul vets. lcd ds cess 4-8
4-4 Ree AU MeeEtr UT V crt tr et a. «kg iyrs-o o chute GMudbes v's v Bobo 4-2]
BASIC OPERATING PROCEDURES
4-5 pee Te Pere GTS sae ses ca oeG tek un le a ate, Se we eee Rv bane wes 4-28
4-6 RE VSsranai Generator -Operat ron (Simp rer) 202. CORAI2. Bg: 4-34
4-7 DEWKOR MODEL A COMO, che ck fotetets ok wee ec me etc eka, 4-40
4-8 OeIe Pinveseu Pe ROPet GLUON ssc. cine cose Slats Wie Se ec beeen 4-44
4-9 Spectrumamnatyzers Operats Onis COC Tee. BOee..S 2 Bk wae 4-47
4-10 FONG! Generator Ope rid Ul Of set .ee ce sts Cites ere eo ee Se 4-49
RS-232 OPERATION
4-11 Oe sme rete! EL @ COM Asoc a taia'a a Ga vels. al etere lata 6 olds 8 a oe a ace Qe 4-50
4-1
4-2 DIRECT DATA ENTRY
The following steps describe the methods of making direct keyboard
entries to control the FM/AM-1200S/A RF Frequency, Offset Generator Fre-
quency and Tone Generator Functions. Once a particular function key is
depressed, the FM/AM-1200S/A assumes a programming/edit and execution
mode of operation. In this mode, the FM/AM-1200S/A will execute each
key entry, as it is selected, while allowing the operator the capability
to edit programmed data indicated on the VFD (37).
{CAUTION}
ANY CHANGES IN DATA WHEN OPERATING IN THE
DIRECT MODE WILL CAUSE CHANGES TO THE PRE-
PROGRAMMED MEMORY SETTINGS.
4-2-1 Direct RF Data Entry
KEY ENTRY VFD (37@e INDICATES
RF
(aa) feat | a [| felons NAY Ld} 7
Nel} CTT ep iT EET PURI
FLASHING LOCATION IS
CURSOR POSITION
Directly enter the desired RF Frequency using the keyboard digits.
EXAMPLE: Enter RF Frequency of 123.4567 MHz.
KEY ENTRY VE Dondn3 7) INDICATES
MH Z|
4-2-2 Direct Tone Entry
KEY ENTRY ACTION
DEPRESS TONE Key Selected function appears on left side of VFD (37)
and VFD° cursor is positioned on first characters
02
{NOTE}
To monitor tone, select "SPKR" with VAR Tone
Selector Switch (5) and adjust VAR Tone Level
Control (6) to a comfortable listening level.
If no key is depressed after approximately 6
seconds, selection will default to the RF
TUNGELONA
Operator's Choice: Selected number character will be displayed, in pro-
0 thru 9 gression, on VFD (37).
INOTE]
While each number key is depressed, its assigned
tone will be generated and the selected charac-
ters will appear, in order of selection, on VFD
(37). To terminate a completed entry, depress
the "ENTER" Key.
EAAMNPLE: «6Owrect TONE Entry
KEY ENTRY VFD (37) INDICATES
=
T sea | | 10Ps
0
=) =
DCS
| 0 0
ocS ocsS
NIC Pat Pe TL Ey Bal fl NE
MONE] | [ojo |a/o]_ |S] Ie]
WAVE SHAPE
FIELD FLASHING
EXAMPLE: Wave Shape Selection
To change wave shape, use + Kev to move cursor to the right until wave-
form title flashes. Use the +t or ¥ Keys to change wave shape.
(See example on following page for sample wave shapes.)
4-3
02
Alternate Method For
Changing Wave Shape: \5|f
Sa Nn
ENTER @ for Sine Wave SINE WAVE
1 for Square Wave a
2 for Ramp Wave “he Pehalys
3 for Triangle : Be |
Wave
SQUARE WAVE
TRIANGLE WAVE
ENTER
Depress (i, Key.
\NOTE}
DTMF may be used simultaneously with the
variable tone generator for audio tone
encoding.
4-2-3 Direct DTMF and IMTS Entries
KEY “ENE Y ACTION
DIME or IMTS Selected function appears on left side of VFD
(37) and VFD cursor is positioned on, first
character.
[NOTE]
If no key is depressed after approximately 6
seconds, selection will default to RF function.
The DTMF tone is set at a fixed level to
modulate the generator at approximately
525° Rite.
Operators ‘Choice: Selected character (number, letter or symbol )
§ thru 9, A thru will be displayed, in progression, on VFD (37).
D,. #, and/or?
02
EXAMPLE: Display DTMF 0123456789ABCD#*
Rec gent Rey
DIMF | [ _o 1 2 3 a
zs = =.
Puts || pcs | | ws | | zops| | opt | |_oPr
5 6 7 a 9
| _
OPT opt | | ovm | | saup | |_INT
2ND <
oe,
FUNCT 8
2ND :
FUNCT c
2ND }
FUNCT D
VE-Do( Seo NDICATES
1
[| ay Fs fa
a eat
ANSI\A
Displaying Sixteen Digit Number
HEIISIBIC
eae a me eae CA ee
AISI SISIAl BIC (oly
Mw
7h
4-5
02
EXAMPLE: Display IMTS (PULSE) 9$1234567890ABCD#*.
KEYS ent Ry VFD -(37) INDICATES
Proceed with sequence as in DTMF example.
ENTER
Depress ie) Key.
[NOTE}
Initial pulse tone ts the standard IMTS capture
tone.
4-2-4 Direct OhPSED cHtny
The OFFSET key is used to set the DUPLEX OFFSET Frequency. The duplex
generator frequency is the receiver frequency plus the offset frequency.
KEY SENTRY ACTION
GFESES OFFSET appears on left side of VFD (37) and VFD
cursor 1s positioned unm irst character.
Operator's Choice: Selected character (number) will be displayed on
9 thru 9, +/- VAD 6.037 i.
FXYAMPLE: Enter DUPLEX OFFSET of +1,.23: MHz.
KEY ENTRY VFD (37) INDICATES
oni key is used to change sign.
Depress Key.
4-2-5 Meter Function
VFD (37) will digitally indicate FREQ ERROR Meter (37) and MODULATION
Meter (1) readings, as selected by FREQ ERROR Meter Range Selector
Control (35) and Modulation METER Control (4).
4-6
02
KEY ENTRY VFD: (37)° INDICATES
lelnay [FluINietriri@iny | | | |
WN au AEWENT | OVETE |e AES TEN
We] leila) | min) (giggle!
(WES (ie a) RT ae WJ \VI)VI IZI
mi wa
|
\
PROG
oe
METER
WATTS AVERAGE =
SINAD ote Gh
DISTORTION: “Ze | [plz]
GLONALiO ~ ae oa cG
EATERY eS) oy | Al
WATTS PEAK —— ae
NMA | Tl
MODULATION =
[-——
4-2-6 Set Intensity (VFD)
lst Order Numbers @ thru 9 will change VFD intensity to a preset level
corresponding to number depressed (@ = minimum and 9 = maximum). + or
y¥ Keys will slew intensity from minimum to maximum in approximately 4
seconds.
Fon UNIT RY VFD (37) INDICATES
4-3 PROGRAMMED DATA ENTRY INTO MEMORY
The "PROG" Key is used to program up to sixteen different memory loca-
tions in the FM/AM-1200S/A. The following functions can be programmed:
RF DTMF/IMTS
TONE ORES-ET.
The following functions can only be programmed for one preset input:
T SEQ STEP (RF)
SCAN STEP (TONE)
DCS
4-3-1 Programmed RF Memory
KEY ENTRY VED US7i INDICATES
PROG
(jam
METER
RF
AE Ea by le A NA i i Py
a a | aa et ay f
Program any one of the memory locations by selecting the number, letter,
or symbol corresponding to that memory location as shown in Table 4-1.
Memory ; Memory
Location Location
)
1
Me
3
4
5
6
7
8
9
Wee Ww We ot
WOONDANANPWMHFE @Q
Table 4-1 Program Memory Locations
4-8
02
KEY ENTRY VER (879° INDICATES
feb) etiden MI{LI| 7
olejo|_IMHiZ| |
1
_ ey tired
=| 1 IRI ie ga |
Enter desired frequency into memory.
\NOTE}
Leave memory location "@" for the direct mode
operation because it will change the stored
memory data.
EXAMPLE: Program Memory Location "16".
KEY ENTRY VED (37) I NGECALES
PROG
METER
2ND
ea]
FUNCT
a he Pap el iat | itp M F.
A lelel (EL jelelelaye) iMiyi2z
Enter desired frequency into memory.
ENTER
Depress Key.
02
4-3-2 Programmed Tone Memory
KEY ENTRY VED: (3:7) INDICATES
oat lien CN eT INA mal
= IIRC IR IAM fel
METER BS lo OS i
saa fei es at HO lf bal ENO Be =)
Tan a om i} NIL
T sé lelelolelrlaly [rlalse| fel | |
Program any one of the memory locations by selecting the number, letter
or symbol corresponding to that memory location as shown in Table 4-1.
KEY ENTRY VFD (37) INDICATES
10 PS
Enter desired 6-digit frequency into memory.
INOTE}
After last digit of tone frequency is entered,
cursor will flash over waveform.
Enter desired waveform.
4-10
02
KE Y ENT RY VED SC3s7). INDI CALES
FE a MN Feat toe aemerh| | Tecate i (is SD RST
EON TES (eth ast Tp | ET ETS We EINE
TPE ait E> itioiar wed Pilat ae a
Gi! lalaiclojaial [sill |
TUEELR AG aoa a tgs a0 a 0 a Cycom |o
1 he ee PL era peated Pyar bebe
Pie Fo Tee Va baie dolidcd x
CINE] jojalajelajo) [RIT |
{NOTE}
+ and ¥ cursor can be used to scroll through
waveforms.
ai-
= PS
2
coal
20 PS
EXAMPLE: Program Memory Location "15".
KEY ENTRY VED (37) INDICATES
PROG
METER
Enter desired frequency and waveform.
ENTER
Depress me; Key.
4-11
02
Leave memory location "@" for the direct mode
operation because it will change the stored
memory data.
4-3-3 Programmed DTMF and IMTS Memory
DTMF and IMTS (PULSE) functions use the SAME memory location.
KEYLEN TRY VFD (37) INDICATES
PROG
(esi:
METER
DTMF 11 T
IMTS au
Program any one of the memory locations by selecting the number, letter
or symbol corresponding to that memory location as shown in Table 4-1.
KEY ENTRY Vrons7), INDICATES
1
a
10 PS
Enter the desired telephone number (16 digits available) into memory.
EXAMPLE: Program Telephone Number 1-316-522-4981 into Memory Location
URE ae
REY ENTRY VFD (37) INDICATES
PROG | [ DTMF 3
METER | |_IMTS OPT
5 5 2
El
opt | | opt | | 20Ps
a 9 8 ENTER
opt | | INT | | BAUD
4-12
03
EXAMPLE: Program memory location "12".
REY NWR, VDSS ie ENDL OATE S
PROG
|
METER
2ND
a
FUNCT
DTMF
ps
IMTS
Enter desired IMTS telephone number.
ENTER
Depress fm); Key.
[NOTE]
The digit. under. the. cursor-and all digits..to,the
right of the cursor will be blanked upon depress-
: ENTER j
ing the i Key.
Leave memory location "@" for the direct mode
operation because it will change the stored
memory data.
4-3-4 Programmed OFFSET Memory
RE YUENT RY VED (37) INDICATES
ee fr |CJ)Ca} Na Pe
IFRS IRM) Vel | LE LL
CI f|O}lilm ne es as ee y
PROG
a
METER
4-13
02
Program any one of the memory locations by selecting the number, letter
or symbol corresponding to that memory location as shown in Table 4-1.
KEY ENTRY VID C37.) - IND LGALES
a ie
| Li uy
+/-
Mm KEY IS USED TO CHANGE SIGN
a
10 PS
Enter desired offset frequency into memory. Depress Key.
NOTE
Maximum frequency is +49.99. Any frequency
above +49.99 will default to +49.99 although
the entered frequency will be displayed on
NED Blog
NOTE]
Leave memory location @ for the direct mode
Operation because it will change the stored
memory data.
4-3-5 Programmed DCS Memory
KEY ENTRY VO 37.) INO LOCALES
PROG
eee ‘Gy Fal iieee ao Ween ENA fa
=a
EINER TL I
4-14
02
NOTE
a Key will change polarity between INVERT and
» | NORMAL.
Enter desired DCS Code and Polarity into memory.
ENTER ‘
Depress Key.
4-3-6 Programmed T SEQ Memory
T SEQ programs the ON time and OFF time of each of the 16 tone memory
locations.
locations will be executed in sequential order. Any tone memory loca-
tions which are not to be executed by the T SEQ function must be given
moe ONT) MES cane no. . OFF EME.
VED.(3.7).BNDLCATES
KEY ENTRY
PROG Z Aaa =
- wey ~|O}CmM “
METER | AY Ee ea rec! i
2ND
=
FUNCT
TONE
El
T SEQ
TONE MEMORY ON OFF
LOCATION TIME (DEAD)
NUMBER TIME
: :
| m7
Use Key to set tone memory location ee |
number to zero.
|NOTE}
+ and + Key in the T SEQ Mode are used to
scroll through the tone memory location numbers
only.
All 16 (@ thru 15) locations must be programmed as all tone
REY AE NERY VED) (37). IN DLCAGES
0 0 0 0 0
ocs ocs ocS DCS DCS
0 0 0
= =
OCS bcs DCS
Tone memory location is now programmed for no "ON TIME" and no "OFF
(DEAD) TIME" causing the FM/AM-1200S/A to ignore the tone stored in
memory location "®" from the tone sequence.
[ALTATALTA FAL TAL TATA
AAU AR ART A) WII es
KEY ENTRY VFD (37) INDICATES
} 0 0
D DCS ocs ocS
0 0 0
Se = a= =
DCS DCS Docs DCS
The above key entry sequence programmed tone "1" memory location for an
"ON TIME" of 1.9 Sec. and for no dead time between execution of the next
tone.
fAITALTA TAL TAL TALTA
wWiwiw VIII IW IY
KEY ENTRY VFD (37) INDICATES
' 0 5 0
sslelsi=
D DCS OPT bcs
0 0 0
Soir
ocs OCS DCS
The above key entry sequence programmed tone "2" memory location for an
"ON TIME" of 0.5 Sec. and an "OFF TIME" of 1.0 Sec before execution of
next tone. The remainder of the tone locations (3 through 15) may be
set to no "ON TIME" and no “OFF, TIME",...If so, when 7 SEO functienmee
executed (see paragraph 4-4-7), the tone entered into tone memory loca-
tions 1 and 2 will be executed and the rest ignored.
C_|falta TA|TALITA
JIIwW\w wWivsiw
4-16
02
Moe
Programmed Two Tone Sequence Memory
Two tone sequence, programs the "ON TIME" for tone memory locations "1"
and "2". Both memory locations for two tone sequence must be programmed
with
EON TIME’ Sondys) alt other tone memory locations (0 and 3 thru 15)
must have the "ON TIME" zeroed out for two tone sequence to operate
properly.
peer oS
Ly
Example -
Program a two-tone sequence of an 800 Hz tone of 1 second dura-
tion into memory location “1" and a 600 Hz tone of 3 seconds
duration into memory location "2". by following these steps:
—
__VFO (37) INDICATES
Enter the tone 1 frequency.
Press pues] | ine 8
| an | ae
METER T SEQ BAUD
0 0 0
(ie | 3
ocs ocs OcSs
and~4--unthL-VED ‘dts plays:
Tt ae CILFATALTA
Price ts LIU )YZ5
Enter the tone 2 frequency.
ves (lil lim
OPT
0
i=
DCS
Enceri cue, ONTIIME rror stone 2.
Press PROG 2ND TONE 3
ns hl hl
METER | | FUNCT} | T SEQ OPT
TIft ee r_|IALTALTA eS ee
[FGINie] | | jelal@a) [oir ine|
0 0 0 0 atin
a FAL TALTALTA
DCs pcs DCS pcs
= pes | | pcs | | ocs
And?
05
Hee eS EL LS LS SS ELE LL SS CLD EEE ESE TS ES ES OD ES ER SS SL SSS SEA SS SSD SS ce SED SD cucnn SS iL SSIS SS GSR SSD SEPID <i SEI “SESesD SO VSD SESS Guns owes <slvuD Sess Gene sommes ees
4, Enter the "ON TIME" for tone 1.
™ ». wes
FA|TALTA
WW ww
5. Zero out the "ON TIME" for
memory location "0",
Press
6. Use the + to go to memory
location 3 through 15 and
sev each ON TIME to zere.
7. To execute two tone sequence,
EXEC 2ND TONE
press =| |
STEP FUNCT T SEO
4-17Ja
05
‘Bee Wy} hae he bee
icc NTR town
se
i
Ca IMOECAYE:
ed f } ieee)
| eas “4owdnnd- ¢ (Gets awosel nese Lhe. as.
a a z a it tins: BOO VMIshe WOPTE9G) VNowem Feats ant AT Fy ost nevks
i630f yromam qosz bs att 6 ane aft onidsaey Ana! a Rs Bela
nate, i. af) = f¢ ir SEES SA TT P5994 [RSME Se ps 7
} ih ,407 4450 vaewas
@
2aTA3 1040 2 f (cc + t¥ + wy
ated ad 104 to f Sasnek CPO WU TRS AES TR See te Je sat
; Hi | Pie UnSPorxe ef) gh feude t j
— , ‘ is ws
kn Phage tea ay ‘_
} i 7 ta
' : 1 | 1) eae
i
one hig
4-3-8 Programmed SCAN Memory
SCAN programs the section of RF memory locations @ through 15.
VED 37 )°-INDECATES
KEY -E NERY
PROG
aly
METER
2ND
(oa)
FUNCT
OFFSET
oy
SCAN
Fant ier
iol |
[ax IJINI 7 Aer eae
LU ~~_—_J
START STOP
MEMORY MEMORY
LOCATION
LOCATION
The program will scan sequentially through the RF memory locations
beginning with the start memory location entry and ending with the stop
memory location. Upon reaching the programmed stop memory location, the
Scan sequence automatically repeats, beginning at the programmed start
memory location.
YPoe( 37), INDECATES
KEY ENTRY
ENTER
The SCAN will remain at the RF memory location for the programmed resume
time if squelch is broken.
4-17b Blank/4-18
02
4-3-9 Programmed STEP Memory
The STEP Key is used in conjunction with the RF and/or TONE functions.
It provides a means of stepping the last executed frequency up or down
at a pre-selected increment.
EXAMPLE: Programming STEP (RF)
KE YR ENERY VFD (37) INDICATES
PROG
METER
2ND
|
FUNCT
feat ii FU a VOT eet INANE ee7
Enter desired step frequency.
ENTER
Depress |i?! Key.
EXAMPLE: Programming STEP (TONE)
Rea ERTRY VED (3) ANDECALES
LE
®
m
-]
2ND
ed
FUNCT
Enter desired step frequency.
Depress KEY Get ht Se
t
Do not depress # or
STEP function.
4-20
4-4 EXECUTED DATA ENTRY
The "EXEC" Key retrieves and executes the programmed memory with no edit
Capability. To exit from this mode and return to the direct mode,
depress ENTER Key twice.
4-4-1 EXECUTING RF Functions
KEY ENTRY EEDMC37 VO ENDICATES
EXEC
a
STEP
Select Desired RF memory location (Ref Table 4-1).
4-4-2 Executing TONE Functions
KEY ENTRY VFD (37) INDICATES
TONE Hie
= R
Select desired TONE memory location (Ref Table 4-1).
4-4-3 Executing DTMF/PULSE Functions
DIMF Function
KEY ENTRY VFD (37) INDICATES
DTMF
(nie
PULSE
(EE WE eee a ste iN (oe 7
ANCA eal coef fie fie SEAT AP ili iff
Select desired DITMF memory location (Ref Table 4-1).
IMTS (PULSE) Function
KEY ENTRY VFD (37) INDICATES
EXEC
bl
STEP
2ND
FUNCT
OTMF
a Vie Ve ni itd ae Mig oe
Select desired IMTS memory location (Ref Table 4-1).
The blinking digit is the one being executed.
4-4-4 Executing OFFSET Function.
(Active in DUP and DUP GEN Modes only).
4-22
02
KEYSENT RY: VED UST) INDICATES
OFFSET
SCAN
Select desired OFFSET memory location (Ref. Table 4-1).
4-4-5 Executing SCAN Function
KE YestNLR Y VF D-(3:7:)-INDT GATES
Sf NE ton Teed ACT Vitae Neen sales aT ING
Iie Df mt 0 i fl a MII} 7
Not CS TI NTS TSS Pp hat ie) TWIG Os We
Reference paragraph 4-3-7 for a detailed explanation of the SCAN
function.
4-4-6 Executing DCS Function
FM/AM-1200S/A will transmit entered DCS code only when MODE Selector
Control (39) is in "GEN" position. With MODE Selector Control (39) in
"REC" position, the VFD (37) will indicate any valid DCS code received
in the program mode. It will not indicate an inverted code received or
any alias codes. The VFD will display only DCS Standard codes listed in
Table 4-2,
4-23
02
REN2SENT RY
EXEC
STEP
2ND
ea
FUNCT
0235) 047
025 244
026 464
021 627
032° - 051
043 445
047 0s
051 032
054 413
O65) 77
071 306
O72 eOes
073 506
074 174
The
NOT
yee a
115; 152
116, 7548
125). 30p.
ot abe
132 546
3A 273
143) FIZ
152 4215
S501 7ot
156 265
162, 503
165 251
Iw 311
Table 4-2
bar above the number represents the binary complement.
uS@ a number and
VEDO2037): INDICATES
64 432
TN on 6) Tae Fo ee
| Dalels| O45) [INWe\R|T
List of Curren. 0UCS Codes
[NoTE}
its complement
in the same system.
DO
4-4-7 Executing T SEQ Function
Tone sequence will execute all preset tone memory locations (ff thru 15)
which are programmed with an "ON TIME".
REV BEN Rs: VED tay) TNDI CATES
af N= lcd ima tin ri fel Tel Ne
| PE LEN eta tnteayis fad ey LENG
\NOTE}
The tone displayed on the VFD (37) is the tone
being executed. The last tone executed will
remain displayed although the tone generator is
turned ‘oTT.
4-24a/4-24b Blank
02
aie
i i
-
om
‘
rn
Ane ao
=
x
e
é
rr ni ania. i ile dame gal
i mp) montis ol che iach gf
a
y nee
si rt
gee on, han eee sree
*
re
1 a
eed
~}
"ht OV
iad
,
*
- Pa a
4-4-8 Executing STEP (RF and TONE.) Function
This function steps the last executed frequency up or down at the pre-
programmed increment.
RES 7-E.P .Bunet1 on
KEY ENTRY. VFD (37) INDICATES
Depress t or ¥ Key to step the RF Frequency up or down by the pre-
programmed increment.
4-25
02
TONE “STEP. RUNCTION
KEY, JEN Tey Now ts) INDY CAWES
EXEC
sat
STEP
2ND
FUNCT
EXEC
STEP
TONE
T SEQ
ES i het ft LL finey
IS}FElP| (lolelolelo|_| Hz] |
Depress + or y Key to step the Tone Frequency up or down by the pre-
programmed increment.
Once the STEP Function has been selected and
the desired increment entered, the step function
will remain valid until a Function Key is
depressed.
4-4-9 Executing Variable IMTS Audio Function
[NOTE]
This function is based on the 2805/1500 type of
Signalling system, but allows any variable tone
frequency and waveform to be used, including
ood /1500;
This function allows the variable tone entered in Tone Memory Location 9
to be used with any of the telephone numbers entered in DTMF/PULSE
Memory Locations f through 15. The created pulse may be set at repeti-
tionerates of .10.or, 20: pulses per second:
To use this function, program desired telephone numbers into DTMF/IMTS
memory locations as shown in paragraph 4-3-3, and program desired
variable tone frequency and waveform into Tone Memory Location # as
shown in paragraph 4-3-2. Then perform the following steps:
KEY ENTRY VFO (327) INDTCATES
OPT
Press the Re ) corresponding to the desired DTMF/IMTS memory location
(Ret. Table) 4-2).
\NOTE}
The blinking digit is the one being executed.
If further telephone numbers are to be executed at the same pulse repe-
tition rate and the same variable tone frequency and waveform, press the
key(s) corresponding to the new DITMF/PULSE memory location.
4-27
02
4-5
4-28
02
RECEIVER OPERATION
FM/AM-1200S/A CONNECTORS
AND INDICATORS APPLICABLE
TO’ RECEIVER OPERATION:
1 MODULATION Meter
TONE GENERATOR PLO OE Re" Connec cor
fa © ©::0"@ 15 EXT MOD/SINAD Connector
16 DEMOD Connector
20” * SCOPE /DV™M “Connector
31 6 GR. Bisp lay
34 ANT Connector
36 FREQ ERROR Meter
oe WED
Figure 4-1 FM/AM-1200S/A Front Panel Controls
Applicable to Receiver Operation
CONTROL SETTING
MODULATION Select Control As req'd
Modulation METER Control As req'd
Keyboard As req'd
PWR/OFF/BATT Switch "PWR" ‘or “=BAL iS
Scope VERTICAL Attenuator As req'd
Vernier Control
VERTICAL Attenuator As req'd
Selector Control
Scope HORIZONTAL Sweep As req'd
Vernier Control
HORIZONTAL Sweep As rea'd
Selector Control
VERT POS Control As req'd
[ING Control As req'd
FOCUS Control As req'd
HORTZ POS? Control As req'd
GEN/LOCK Control Full ccw, detent
FREQ ERROR Meter As req'd
Range Selector Control
MODE Selector Control REO
VOLUME Control As req'd
Squelch Control As req'd
Table 4-3 FM/AM-1200S/A Front Panel Controls
Applicable to Receiver Operation
4-5-1 GENERAL
The FM/AM-1200S/A contains a communications receiver capable of moni-
toring AM, FM, and SSB signals within a range of 250 kHz to 999.9999
MHz. Signals may be monitored “off-the-air" using an external antenna
or by direct cable connection to the front panel T/R Connector (11).
Table 4-4 defines the signal parameters which can be monitored using the
receiver and associated monitoring functions.
SIGNAL CHARACTERISTIC(S): MONITORING DEVICES CONTROL SETTINGS:
Demodulated * MODULATION Meter (1) Modulation METER
PieeF Moor SSB Eontro) C4) to
desired "kHz/%X10".
MODULATION Select
COnEroe |” (sehcas
req'd.
CRT 1394)
(Oscilloscope)
VERTICAL Attenuator
selector Contr o,!
(24) to desired
hizo. Dos Lion.
NEO £37 } Depress "2nd FUNCT"
and "METER" Keys
(in that order):.
Volume control
(40) as req'd.
Speaker
RF and AUDIO Error* FREQ ERROR Meter (36) FREQ ERROR Meter
Range Selector
Control (35) as
req'd.
VFO (37) Depress "2nd
BUUETS and “METER”
Kevs (in that
order).
AUDIO Error* GR (32) HORIZONTAL Selector
(Lissajou Pattern) Contrioul (216) to
tone, VERTICAL
Selector Control
(24) to desired
kHz/%X10.
* When the received signal input level is below the FM/AM-1200S/A
squelch threshold, these monitoring functions will be disabled.
Table 4-4 Receiver Monitoring Capabilities
4-29
02
SIGNAL ICHARAC TERT Sule Gsa: MONTTORING I DEV TOES)":
Transmitter Power CWATTS) MODULATION Meter (1)
CTR CORTE. Ce ome Cs) conn)
CONTROL. Se EN Giese
Modulation Meter
Controle <4 )esGe
desired “WATTS”
selection.
or
Vi ORGS Fy) Depress “2nd
FUNCT”
and “METER” Keys
(in that orderads
CRT Display C31)
(Spectrum Analyzer on
FM/AM-1200S only)
HORIZONTAL Sweep
Selector Control
(26) clockwise to
1 MHzZ/DIV ‘or’ Tesee
Relative Signal
Strength
MODULATION Meter Modulation METER
Control, C4) nee
eo Garis
Cl)
VED. C378) Depress “2nd
FUNCT” and “METERs
Keys: Cin (thay
order)
Table 4-4 Receiver Monitoring Capabilities (Cont’d)
A= Buse BASIC RECEIVER OPERATION
Basic, operation of the FM/AM-1200S/A receiver is as follows:
STEP PROCEDURE
les If signals are to be monitored “off-the-air”, connect external
antenna to ANT Connector (34); if signals are to be received by
dinnect cabsker connection, apply stgnal ito T/R Connector mane
[ERUTION}
MAXIMUM CONTINUOUS INPUT TO ANTENNA CONNECTOR (34)
MUSTONOT GEXCEED O25 WAT TSE
MAXIMUM INPUT TO T/R CONNECTOR (11) MUST NOT EXCEED
150 WATTS.
Lam NUTS SOR 6 ob thidkntes “OFF”.
Maximum continuous.
For Accurate Power Meter measurements, set RF Level
Attenuator Control C9) to cany position cotter: ot han
2 am.
4-30
06
Sa EP
PROCEDURE
SS: ee SS SS — ee e— nn nk ek aa ee
2 Using Keyboard (18), set FM/AM-1200S/A to desired RF frequency.
4-5-3 RECEIVING AM OR FM SIGNALS (OFF-THE-AIR)
STEP | PROCEDURE
. Perform "BASIC RECEIVER OPERATION" steps described in paragraph
4-5-2.
2. Place MODULATION Select Control (3) to:
a. "AM NORM" or "AM NAR" position, if receiving AM signals.
De FMC WIDE®, "FM MID” or. "FM NAR" positdon,. af,receiving FM
signals.
a To aurally monitor received audio, adjust VOLUME Control (40)
and SQUELCH Control (41) as required.
4. Use monitoring features outlined in Table 4-4 to monitor desired
Signal parameters.
4-5-4 RECEIVING SSB SIGNALS (OFF-THE-AIR)
SLE? PROCEDURE
:: Perform "BASIC RECEIVER OPERATION" steps described in paragraph
4-5-2.
o3 Place MODULATION Select Control (3) to "SSB" position.
3. To aurally monitor audio, adjust VOLUME Control (40) and SQUELCH
control (41) as required.
4. Use GEN/LOCK Control (32) as a clarifier.
MODULATION
SELECT CONTROL DEMODULATION PRE-DETECTION POST-DETECTION
POSITION MODE BANDWIDTH BANDWIDTH
AM
NAR AM GKHZ 8 kHz
NORM AM rS “KHz 8 kHz
$$B 8 kHz
FM
NAR FM LOU aHZ 8 kHz
MID FM 200 kHz 8 kHz
WIDE FM 200 kHz 80 kHz
Table 4-5 Modulation Select Control Positions ee
05
4-5-5 TESTING AM OR FM TRANSMITTERS
eS SS A TS SS AT AS A Se a. SE Se See Gut Sone ite eee capes sent GOSia Sm Slaten aonioe seen asst» Ginvah Gen <n SSeS Govuah SUID GISSID SSFP SSOP SOA SAE GOD SIS” aca Se SSS Seas SA Sess <I sn caPSnSP Senior smear EERE
{CAUTION}
MAXIMUM INPUT TO T/R CONNECTOR (11) MUST NOT
EXCEED. 15.0..WAnTSe
MAXIMUM TIME LIMITS FOR MEASUREMENT OF TRANS-
MITTER: OUTPUT USING Ri CONNECTOR <1 101 Se
>150 W = 1 MINUTE POR" CS MINUTES “OFF™,
¥
90 W = MAXIMUM CONTINUOUS.
ae Perform "BASIC RECEIVER OPERATION" steps described in paragraph
4-5-2,
{NOTE}
Connect 502 coaxial cable between output of
transmitter under test and FM/AM-1200S/A T/R
Connector (11).
Dis Position MODULATION Select Control (3) to:
a. AM "NORM" or "NAR" position if testing AM transmitters.
omens Meee, BN Relevtend| A Rear le Bed AGL SL! OP aCe ae, cele testing FM transmit-
ters.
oi Use monitoring features outlined in Table 4-7 to monitor desired
Signal parameters.
4-5-6 MEASURING AM OR FM TRANSMITTER DISTORTION
OTEP oy MNS Me ES OER ieee BP RUGEDURE, ee
1 Perform "BASIC RECEIVER OPERATION" steps described in paragraph
4-5-2,
\NOTE}
Connect 502 coaxial cable between output of
transmitter under test and FM/AM-1200S/A T/R
Connector (11).
Modulate transmitter under test with a fixed 1 kHz tone.
FM/AM-1200S/A 1 kHz Tone Generator (fixed)
function should be used as a modulation
source.
Measurement accuracy is dependent on accuracy of
1 kHz tone.
Position Modulation METER. Control: (4) to’ "DIrsT™.
Connect coax cable between FM/AM-1200S/A DEMOD Connector (16)
and EXT MOD/SINAD Connector (15).
Monitor DIST Level on top scale of MODULATION Meter (1).
Place VERTICAL Attenuator Selector Control (24) to "RESID"
position to observe residual distortion on oscilloscope.
4-33
05
4-6
4-34
02
RF SIGNAL GENERATOR OPERATION (SIMPLEX)
vit
ise
N
A
GtN Ar—on be
oN t
Oo)
Oats
ravoio =f tn ALL our var
— — a we eg
Be FM/AM-1200A fA ad ;
VERT POS INT Focus e
.
=)
a PROG
COM
x
HORIZ POS
HORIZONTAL
DIV | wS/oly _,
yoo
ENTER
scopt/ovMm
TOME OUT
micace
CORO
FM/AM-1200S/A CONNECTORS AND
INDICATORS APPLICABLE 9T.0uRae
SIGNAL GENERATOR OPERATION:
MODULATION Meter
T/R Connector
EXT MOD/SINAD Connector
MIC/ACC Connector
SCOPE/DVM Connector
CRT Display
LOCK Lamp
FREQ ERROR Meter
VFD
Sinan
Figure 4-2 FM/AM-1200S/A Front Panel Controls
Applicable to RF Signal Generator
Operation
CONTROL SETTING
MODULATION Select Control "FM NAR"
Modulation METER Control "kHz/ZXiG
posttron i.
VAR Tone Selector Switch “OT”
VAR Tone Level Control As req'd
1 kHz Tone Selector Switch pa Oh A eae
1 kHz Tone Level Control As req'd
RF Level Attenuator "-50 dBm"
RF Level Attenuator Vernier een ee
Control
Keyboard
PWR/OFF/BATT Switch
VERTICAL Attenuator
Selector Control
HORIZONTAL Sweep
Selector Control
GEN/LOCK Control
FREQ ERROR Meter Range
Selector Control
MODE Selector Control
VOLUME Control
Table 4-6
to RP Signal
FM/AM-1200S/A Front Panel
"RF Frequency
150.2000 Mie
"PWR" or RATT
"2 .kHz/% Xt
“1 mS (DI
oh tah Sl
Vow
"GEN"
As req'd
Controls Applicable
Generator Operation
4-6-1 GENERAL
The FM/AM-1200S/A RF signal generator is capable of generating
calibrated amplitude signals within a range of 250 kHz to 999.9999 MHz,
in 100 Hz steps. The signal generator can be used to stimulate external
devices by generating modulated or unmodulated signals, while the
FM/AM-1200S/A receiver is simultaneously monitoring the generator.
Modulation signals for the generated carrier are available from the
FM/AM-1200S/A internal tone generators or from external audio sources.
A microphone input connector is also available for applying voice modu-
lation. The generated signals are transmitted out the FM/AM-1200S/A
front panel T/R Connector (11), at an output level which is continuously
ae from -20 to -127 dBm (using RF Level Attenuator Controls (9)
mid 10).)..
Table 4-7 outlines the parameters of the generated output, which can be
monitored by the FM/AM-1200S/A receiver circuits during generator opera-
ei On.
SIGNAL CHARACTERISTICS: MONT EORING DEVICES): CONTROL SETTINGS:
Demodulated Audio MODULATION Meter (1) Modulation METER
Contra) (4). to
desired
Rt oO.
MODULATION Select
Control (3). as
required.
Cera) VERTICAL Attenu-
(Oscilloscope) ator Selector
Control. .(24 ) to
KHZ/phlO pos tttion.
HORIZONTAL Sweep
Selector Control
Veo) to mS /DIV or
uUS/DIV (FM/AM-
1200A only)
position.
Veo C37") Depress "2ND
FUNCT "and METER:
Keys (in that
order...)
SPEAKER Volume Control
(40) as required.
Table 4-7 Receiver Monitoring Capabilities
of Generated Output
4-35
02
Table 4-6 (Cont'd)
SIGNAL CHARACTERISTICS:
MONITORING DEVICE(S):
FREQ ERROR Meter (36)
CONTROL SETTINGS:
#RF ERROR FREQ ERROR Meter
Range Selector
Control (35) as
req’d.
or
*AUDIO ERROR
VEDotS 74) Depress "2ND
FUNCT" and
"METER" Keys seu
that order).
# Used with GEN/LOCK Control (32)
* Audio error is measured through EXT MOD/SINAD Connector (15).
Table 4-7 Receiver Monitoring Capabilities
of Generated Output
4-6-2 SIGNAL GENERATOR OPERATION (SIMPLEX)
STEP) tee dire Te Ey os ee
A Position front panel controls as indicated in Table 4-5.
\NOTE}
FM/AM-1200S/A is now generating a carrier signal
at a frequency and output level of 150.2 MHz @
500 wv.
If a signal greater than 100 mW is applied to
the T/R Connector (11) while the FM/AM-1200S/A
is generating, the set will automatically switch
to the receive mode and only monitor the
Signal(s) applied to this connector.
4-6-3 GENERATING AM OR FM MODULATED RF SIGNALS
SE ae 22 FROUCEDURE 1s
Le ee en ee rn ee ee ne ee
iF pe "STEPS IN SIGNAL GENERATOR OPERATION" (Ref. paragraph
4-6-2).
2s Apply FM modulation signal to carrier as follows:
a. Using Keyboard (18), depress "TONE" Key and enter desired
modulation frequency and wave shape.
4-36
05
STEP
b.
les
SE SE SS ST A
oj sEROCEDURE
select "INTL" with VAR Tone Selector Switch (5) and adjust
VAR Tone Level Control (6) for 5 kHz as displayed on
MODULATION Meter (1) and Scope Display (31).
If 1 kHz Tone Generator output is preferred, select "INTL"
with 1 kHz Tone Selector Switch and adjust 1 kHz Tone Level
Control (8) for 5 kHz as displayed on MODULATION Meter (1)
and Scope Display (31).
[NOTE]
If both tone generators are used as modulation
sources, the MODULATION Meter (1) and CRT Dis-
play (31) will display the composite modulation
Signal produced by both tone generators. To
monitor either individual modulation signal,
one generator must be turned off.
The FM/AM-1200S/A is now generating a carrier signal with
9 kHz FM deviation. Use monitoring features outlined in
Table 4-7 to monitor desired signal parameters.
\NOTE}
For AM modulation, place MODULATION Select Con-
trol (3) to "AM NORM" position. Adjust either
the 1 kHz or VAR Tone Level Controls for proper
percent modulation as viewed on MODULATION
Meter (1) and Scope Display (31).
a Modulating the FM/AM-1200S/A Generator with DTMF.
a.
Program desired telephone number into DTMF memory location
When desired telephone number is executed, it will be
modulated at approximately 3.5 kHz.
4. Modulating the FM/AM-1200S/A Generator with DCS.
a.
Program DCS code number into memory. To monitor DCS code
on FM/AM-1200S/A, place VAR Tone Selector Switch (5) to
"INTL" and adjust VAR Tone Level Control for desired
modulation level.
ha F
05
4-6-4 EXTERNALLY MODULATING RF SIGNAL GENERATOR
STEP PROCEDURE
SS SS ES EE SE SE EE TS TT ES TT ET TT ES ET LE LS SS LS LS LL LS LS LL SC ST
ne Perform steps in "SIGNAL GENERATOR OPERATION".
Mae Apply external modulation signal to EXT MOD/SINAD Connector (15).
Insure VAR Tone Selector Switch (5) and 1 kHz
Tone Selector Switch=(7) are positioned to “OFF*®.
ts Adjust output of applied modulation signal to desired modulation
level, as reflected on MODULATION Meter (1) and Scope Display
(3ele
4-6-5 VOICE MODULATING RF SIGNAL GENERATOR
eel PROCEDURE
i a a i a en i i i a i i i a er ee ee OCC OO TO
ire Perform steps in "SIGNAL GENERATOR OPERATION".
7a Connect external microphone to MIC/ACC Connector (19).
3c Press PTT (Press-To-Talk) Switch (on microphone) and speak into
microphone. Use monitoring features outlined in Table 4-7 to
monitor voice modulation characteristics.
Diode speech limiting is incorporated within
FM/AM-1200S/A circuitry for control of peak
modulation. The limiter is set for 6 kHz
deviation.
Whenever microphone is keyed, the FM/AM-1200S/A
will automatically switch to the generate mode
of operation, if the MODE Selector Control (39)
1$.29 thes BEC’ Ora DUE" Posi ti onanad he. Gemerare
mode cannot be overridden by applying power
transmission at the T/R Connector (11).
4-38
05
4-6-6 VARIABLE GENERATE
This feature allows the generator to be moved off center frequency a
minimum of +10 kHz and the EXT MOD Connector (15) to be used for DC
coupling.
STEP | PROCEDURE
ee eS EE SE EE EE EE EE EE EE EE EE TT TT TS ES TS ST LT TT LT LT LT TT
e". Set front panel controls to the positions listed in Table 4-6.
2. (FM/AM-1200S only). Position HORIZONTAL Sweep Selector Control
a to "10 kHz/Div" and center display using HORIZ POS Control
oka de
a. Rotate GEN/LOCK Control (32) out of the "LOCK" (detent) position
and observe generator frequency change on FREQ ERROR Meter (36)
and analyzer display (FM/AM-1200S only).
4. Place GEN/LOCK Control (32) to "LOCK" (detent) and observe that
FREQ ERROR Meter (36) goes back to zero and analyzer display is
centered (FM/AM-1200S only).
4-6-7 MEASURING UUT RECEIVER SINAD SENSITIVITY
ee cs ce ee cs cas ce SS SS EE EE EE TT SS SS LS LS LS LY LY SLES SS SL SSS SF LT SNR
Bi Connect 502 coaxial cable between FM/AM-1200S/A T/R Connector
(11) and RF input of receiver under test.
[NOTE]
For UUT SINAD measurements, the FM/AM-1200S/A
internal tone generator (fixed) should be used
as a modulation source. A modulation frequency
of 1000.0 Hz is required.
2 Connect audio output of receiver under test to EXT/MOD/SINAD
Connector (15) and place Modulation METER Control (4) to "SINAD"
position.
3% Adjust RF Level Attenuator Control (9) for an output level of
500 uV.
4, Slowly decrease FM/AM-1200S/A RF output level until MODULATION
Meter (1) displays desired SINAD value.
iNoTE|
The setting of RF Level Attenuator Control (9)
and RF Level Attenuator Vernier Control (10)
represents SINAD sensitivity of receiver under
test.
4-39
05
4-7 DUPLEX OPERATION
FM/AM-1200S/A CONNECTORS
AND. INDICATORS. APPLICABGE
TO DUPLEX OPERATION:
1 MODULATION Meter
11, .T/R Gonnector
cee Tera Lat 14° DUPLEX Output Conneeram
) Ee 15 EXT MOD/SINAD Connector
ro" MDCT ACC’ Conneccos:
war OR mran2008,,, COC naa 20 SCOPE/DYM Connector
8. 9:2 '@ 3dv (CRT? 04 Spl ay
Bee sian Shes LOCK Lamp
ga 36 FREQ ERROR Meter
a7 VFD
@
2) Ae OOW
Figure 4-3 FM/AM-1200S/A Front Panel Controls
Applicable to Duplex Operation
CONTROL SETTING
3.) MODULATION Selects Control “FM NAR?
AOC) dO ie MELE Rom Gioia "kHz/2ZX10
DOSTti On Ga
9 RF Level Attenuator Control % > 507 CB me
10 RF Level Attenuator Vernier geo Pe sty Tle sie’
Controt
18 Keyboard "RF Frequency
150.2000 Maze
Ze PWR/OPF/BARRESwarten "PWR" or: “Baie
24 VERTICAL Attenuator "2 kKHZ/ZK ie
Selector Control
26 HORIZONTAL Sweep "1 mS 7D ie
Selector Control
32 GEN EOC Mt ontr ol *LOGEKS
35 FREQ ERROR Meter Range TAL OKe
Sehector Contr od
39 MODE Selector: Contre "GEN”
40 VOBUME »Cont, R07] ass imeqt d
Table 4-8 FM/AM-1200S/A Front Panel Controls
Applicable to Duplex Operation
{NOTE}
For Accurate Power Meter measurements, set. RF Level
AtCenUator ‘Control 9) "to any (pos ity one Over tren
-20 dBm.
4-40
06
4-7-1 GENERAL
In the Duplex mode of operation, the FM/AM-1200S/A has the capability of
generating and receiving signals simultaneously. While the FM/AM-
1200S/A receiver is monitoring the power, modulation and frequency
characteristics of the UUT transmitter, the FM/AM-1200S/A offset genera-
tor is simultaneously transmitting to the UUT receiver with a signal at
a fixed output level. This signal is not affected by the operation of
the UUT transmitter. FM/AM-1200S/A duplexer accuracy (setting up on
desired frequency) is +1.3 kHz
The FM/AM-1200S/A contains a duplex system which
is FM modulated only.
The FM/AM-1200A has an output level at the
DUPLEX Output Connector of -60 dBm +10 dB.
The FM/AM-1200S has two output levels available
at the DUPLEX Output Connector:
DUPLEX HIGH Mode: -15 dBm (+10 dB) @ +49.99 MHz
from Receive Frequency
DUPLEX LOW Mode: -25 dB below DUPLEX HIGH at
the same frequency
Perform the procedure in paragraph 4-6-3 "GENERATING FM MODULATED
SIGNALS" before continuing on with this procedure.
[NOTE]
4-7-2 through 4-7-6 apply to FM/AM-1200A Duplex
Operation only.
4-7-7 through 4-7-10 apply to FM/AM-1200S Duplex
Operation only.
4-7-2 DUPLEX TESTING USING SEPARATE TRANSMIT/RECEIVE LINES (FULL DUPLEX
OPERATION) (FM/AM-1200A ONLY)
In this mode, the UUT transmitter output is applied to the FM/AM-1200A
at the T/R Connector (11). The FM/AM-1200A offset generator output
(available at the DUPLEX Output Connector (14)), at a fixed level, is
applied to the RF input of the UUT receiver.
{CAUTION}
DO NOT TRANSMIT INTO DUPLEX OUTPUT CONNECTOR
(14), AS CONNECTOR IS NOT PROTECTED AGAINST RF
INPUTS ABOVE 0.25 WATTS.
4-41
04
4-7-3 “OFF-THE-AIR" DUPLEX TESTING (FM/AM-1200A ONLY)
In this mode, the output of the UUT transmitter is monitored "“off-the-
air" at the FM/AM-1200A ANT Connector (34), while the FM/AM-1200A offset
generator output (available at the Duplex Output Connector (14) or T/R
Connector (11)) is applied to the UUT receiver input.
DO NOT TRANSMIT INTO ANTENNA CONNECTOR (34);
RF sUINPUTS°*ING EXCESS On 0. coo WAdTS MAY CAUSE
DAMAGE TO FM/AM-1200A.
4-7-4 DUPLEX TESTING USING COMMON TRANSMIT/RECEIVE LINE (HALF DUPLEX
OPERATION FM/AM-1200A ONLY)
When testing a duplex transceiver with a single transmit/receive 1/0
port, a common receive/transmit line is connected between the UUT RF I/0
port and the FM/AM-1200A T/R Connector (11).
{CAUTION}
DO NOT TRANSMIT INTO DUPLEX OUTPUT CONNECTOR
(14), AS CONNECTOR IS NOT PROTECTED AGAINST RF
INPUTS ABOVE 0.25 WATTS.
The offset transmitted out DUPLEX Output Con-
nector (14). is.a4.fixed:=<604dB. level.
The offset transmitted out T/R Connector (11)
is a fixed -80 dB level.
The RF frequency entered in the FM/AM-1200A is
the UUT transmit frequency. OFFSET = UUT
receive frequency minus UUT transmit frequency.
(OFFSET can be |-) negative.)
4-7-5 DUPLEX TESTING (FM/AM-1200A ONLY)
Place MODE SeTector Control (39) to "DUR Position.
EXAMPLE: Testing a Duplex transceiver
UUT XMT FREQ = 157.77 MHz
UUT REC FREQ = 152.51 MHz
(ff) 007 oh Fe
OVM OVM OVM
OFFSET. =) 252. S10 MAg UT Rec regi = 57 77 MHZ
(UUT XMT Freq) (OFFSET = -5.26 MHz)
4-42
02
° 5 6
ae
OPT OPT
ey ; : :
Use # Key until (-) sign appears in front of
offset frequency.
\NOTE}
A generated RF frequency of 152.51 MHz with
5 kHz deviation @ -60 dBm is present at DUPLEX
Cutputceconnectur 14). 1/R Connector (11) is
seu Uo. rece ve.jan RE lirequency of 157.77 MHz.
A signal of 152.51 MHz with 5 kHz deviation @
nial dBm is also present at the T/R Connector
0) 2,
4-7-6 DUPLEX GENERATE MODE (FM/AM-1200A ONLY)
In Duplex Generate Mode of operation, the signal is present at the T/R
Connector (11) only. There is NO signal present at the DUPLEX Output
Connector (14). The output frequency at the T/R Connector (11) is the
RF setting plus the OFFSET frequency with the output level controlled by
the RF Level attenuator control (9) and RF Level Attenuator Vernier
Control (10). The FM/AM-1200A receiver will monitor the FM/AM-1200A
generator.
[NOTE]
FM/AM-1200S/A is forced into the generate mode
and will not switch to receive mode when trans-
mrt tiwag nto’ TYR Connector (11)%
PeeerLE: RF Setting = 157.77 MHz
OFFSET Setting: -5.26 MHz
Output Frequency @ T/R Connector (11) = 152.51 MHz
4-43
02
An7eg
SELECTING "DUPLEX HIGH" OR "DUPLEX LOW" (FM/AM-1200S ONLY)
PROCEDURE
a a ee a es ee ee eS
eee eee err
Place: MODE ‘Selector Controls 9). toe "DUP" position.
2ND 5
Press to select DUPLEX HIGH (-15 dBm +10 dB) or
DUPLEX LOW (-40 dBm +15 dB) output levels.
a. The VFD will display:
or
De: The word "ON" following one of these selections wil]
indicate the presently selected DUPLEX operating mode.
Le ‘
Use the Cl and to rotate between the two modes as
displayed on the VFD.
ENTER
Press to change from the current operating mode to the
one displayed on the VFD. The word "ON" will appear on that
display.
\NOTE}
If no key is pressed within 5 seconds after the
"DUPLEX HIGH" or “DUPLEX LOW" message appears on
the VFD, the FM/AM-1200S will default to its
last setting and VFD display.
DUPLEX TESTING METHODS (FM/AM-1200S ONLY)
Three possible methods of UUT Duplex Testing using the FM/AM-1200S are:
4-43a
05
DUPLEX TESTING USING SEPARATE TRANSMIT/RECEIVE LINES (FULL DUPE
OPERATION)
In this mode, the UUT transmitter output is applied to the
FM/AM-1200S at the T/R Connector (11). The FM/AM-1200S offset
generator output (available at the DUPLEX Output Connector (14)),
ata fixed: level, -Ts-“applted to the RF input of the UUT
receiver.
[ERUTION)
DO NOT TRANSMIT. INTO DUPLEX OUTPUT CONNECTOR
(h4) 5 sCONNEGTOR IS NOT PROTECTED. AGAINST RE
INPUTS ABOVE 0.25 WATTS.
"OFF-THE-AIR". DUPLEX TESTING
In this mode, the output of the UUT transmitter is monitored
"off-the-air" at the FM/AM-1200S ANT Connector (34), while
the FM/AM-1200S offset generator output (available at the
Duplex Output Connector (14) or T/R Connector (11)) is applied
to the UUT receiver input.
{CAUTION}
DO NOT TRANSMIT INTO ANTENNA CONNECTOR (34):
RF INPUTS IN EXCESS OF 0.25 WATTS MAY CAUSE
DAMAGE TO FM/AM-1200S.
DUPLEX TESTING USING COMMON TRANSMIT/RECEIVE LINE (HALF DUPLEX
OPERATION)
When testing a duplex transceiver with a single transmit/receive
1/0 port, a common receive/transmit line is connected between the
UUT RF I/0 port and the FM/AM-1200S T/R Connector (11).
{CAUTION}
DO NOT TRANSMIT INTO DUPLEX OUTPUT CONNECTOR
(14); CONNECTOR IS NOT PROTECTED AGAINST RF
INPUTS ABOVE 0.25.WATTS.
\NOTE}
The offset transmitted out the DUPLEX Output
Connector (14) of the FM/AM-1200S is at -15 dBm
(+10 dB) in the DUPLEX HIGH mode or -40 dBm (+15
dB) in the DUPLEX LOW mode.
The offset transmitted out T/R Connector (11) is
a fixed -85 dBm (+10 dB) level.
The RF frequency entered in the FM/AM-1200S is
the UUT transmit. frequencys: : OFFSET. =9UUT
receive frequency minus UUT transmit frequency.
(OFFSET can be (-) negative.)
4-43b
05
4-7-9 DUPLEX TEST (FM/AM-1200S ONLY)
EXAMPLE: Testing a Duplex transceiver
UU XM TD CPREQ "ats 7 Live Me,
UUT REC FREQ =°152.510 MHz
STEP ORNs BORON BD a eee ee eC LUO R ERR EO ON ee re
1 Place MODE Selector Control) (39)* tov "DUP": position.
2ND 5 =
FUNCT OPT =
unti? VED displays:
ENTER
Press:
VFD will display:
9 eee) (Se) [rr ot Fr
OPT OVM OVM
OFFSET 0= 152 55) MHz -( UUT Réerifreq) “= 157.77 'MHz
(UUT XMT Freq) (OFFSET = -5.26 MHz)
OFFSET 5 2 6
A Enter: Rae ee,
SCAN OPT 20PS OPT
Key until (-) sign appears in front of offset frequency.
\NOTE}
A generated RF frequency of 152.51 MHz with a 5
kHz deviation @ -15 dBm (+10 dB) (DUPLEX HIGH
mode) or -40 dBm (+15 dB) (DUPLEX LOW mode) is
present at the DUPLEX Output Connector (14).
T/R Connector (11) will receive an RF frequency
of 1S]. 77e@ Mhz. 92 ASST ane iore es? SIMMHe*Withiass
kHz deviation @ -85 dBm (+10 dB) is also present
at the T/R Connector (11).
4-43c
05
4-7-10 DUPLEX GENERATE MODE (FM/AM-1200S ONLY)
In Duplex Generate Mode of operation, the signal is present at the T/R
Connector (11) only. There is NO signal present at the DUPLEX Output
Connector (14). The output frequency at the T/R Connector (11) is the
RF setting plus the OFFSET frequency with the output level controlled by
the RF Level Attenuator Control (9) and RF Level Attenuator Vernier
Control (10). The FM/AM-1200S receiver will monitor the FM/AM-1200S
generator.
\NOTE}
FM/AM-1200S is forced into the generate mode
and will not switch to receive mode when trans-
mitting into. oT/R oConnectoreat1) i:
SepmecLE: RF Setting = 157.77 MHz
Oeroet Setting = -5.26 MHz
Output Frequency @ T/R Connector (11) = 152.51 MHz
4-434
02
4-8
4-44
02
OSCILLOSCOPE OPERATION
FM/AM-1200S/A CONNECTORS AND
INDICATORS APPLICABLE TO
OSCILLOSCOPE OPERAT LOM:
15 EXT MOD/SINAD Connector
17 TONE OUT Connectos
20 SCOPE/DVM Connector
81 “CRT Disp lay
Figure 4-4 FM/AM-1200S/A Front Panel Controls
Applicable to Oscilloscope Operation
CONTROL
Modulation METER Control
AC/GND/DC Switch
PWR/OFF/BATT Switch
VERTICAL Attenuator
Vernier Control
VERTICAL Attenuator
selector Contra!
HORIZONTAL Sweep
Selector Control
VERT POS. Control
INT Control
FOCUS ‘Contra
HORIZ POS Control
SETIANG
As req'd
As req'd
"PWR" or "Be
a ibe: 8 eg
"LV iO tae
"] mS /D ie
Ctr: Trace
As req'd
As req'd
Ctr Trace
Table 4-9 FM/AM-1200S/A Front Panel Controls Applicable
to Oscilloscope Operation
4-8-1 GENERAL
Table 4-9 lists the front panel controls which are used in the Oscillo-
scope function of the FM/AM-1200S/A. For oscilloscope operation, the
HORIZONTAL Sweep Selector Control (26) must be in "mS/Div" or "LS/DIV"
position. The VERTICAL Attenuator Selector Control (24) "kHz/%X10"
position is for internal demodulated audio and "V/Div" position is for
external scope inputs. All other controls are similar to those found on
most conventional oscilloscopes.
4-8-2 EXTERNAL OSCILLOSCOPE OPERATION
The FM/AM-1200S/A Oscilloscope is a general purpose DC to 1 MHz band-
width single trace oscilloscope with automatic triggering. Any external
input to the scope must be applied at the front panel SCOPE/DVM
Connector (20).
STEP PROCEDURE
1; Place the FM/AM-1200S/A front panel controls to the settings
listed in Table 4-9,
2. Connect TONE OUT Connector (17) to SCOPE/DVM Connector (20).
- turn. PekH2) PONE “Selector Switch (7) to “INTL" position.
4. Adjust 1 kHz TONE LEVEL Control (8) for a viewed sine wave on
Che aDisplay (31).
When AC/GND/DC Switch (21) is in "GND"
position, the external input is removed from
the Oscilloscope.
4-8-3 INTERNAL OSCILLOSCOPE OPERATION
The VERTICAL Attenuator Selector Control (24) must be in one of the four
"kKHZ/%X10" positions for internal oscilloscope operation.
STEP PROCEDURE
i. Place the FM/AM-1200S/A front panel controls to the settings
listed in Table 4-9,
ie Set Vertical Attenuator Selector Control. (24) to "2 kHz/%X10"
position.
ce Set FM/AM-1200S/A controls for 5 kHz FM deviation. (Ref.
paragraph 4-6, RF Signal Generation Operation ( Simplex) .)
A... The CRT now displays (+) and (-) 5 kHz deviation.
4-45
05
For AM modulation, the demodulated audio dis-
played on CRT will read twice the percentage
of modulation.
4-8-4 RESIDUAL DISTORTION
The "RESID" position of the VERTICAL Attenuator Selector Control (24)
allows the display of the residual distortion or noise of the UUT, as
received at the EXT MOD/SINAD Connector (15). The "RESID" position is
only valid when the Modulation METER Control (4) is in "SINAD" or "DIST"
position.
4-8-5 TONE GENERATOR
The "TONE" position of the HORIZONTAL Sweep Selector Control (26)
applies the output of the Programmable and/or Fixed (1 kHz) Tone
Generators to the horizontal deflection circuits of the CRT. This func-
tion is useful for meaSuring the frequency of demodulated audio or
externally applied audio signals, using the Lissajou method of frequency
comparison.
4-46
05
4-9 SPECTRUM ANALYZER OPERATION (FM/AM-1200S ONLY)
EMTER
SCOPE OWM
FM/AM-1200S CONNECTORS AND
INDICATORS APPLICABLE TO
SPECTRUM ANALYZER OPERATION:
eRh/R Connector
3) CRI Bisiplay
34 ANT Connector
3 7e ED
Figure 4-5 FM/AM-1200S Front Panel Controls
Applicable to Spectrum Analyzer
Operation
CONTROL
18 Keyboard
2° PUR/OFP/BATI: Switch
Pha VoRTI GAL Attenuator
Selector Control
26 HORIZONTAL Sweep Selector
Control
mae VERT FOS. Contre!
fe INI Control
ro FUCUS Control
ee HORIZ POS Control
39 MODE Selector Control
Table 4-10 FM/AM-1200S
to Spectrum
4-9-1 GENERAL
Table 4-10 lists the FM/AM-1200S
Spectrum Analyzer function. The
general purpose analyzer capable
of 250 kHz to 999.9999 MHz. The
must be in one of the MHz/Div or
SETULING
As req'd |
"PWR" or PRATT ®
Any position
except, ObE.
et Mes Day”
"Mid Range"
As req'd
As req'd
"Mid Range"
As req'd
Front Panel Controls Applicable
Analyzer Operation
front panel controls applicable to the
FM/AM-1200S Spectrum Analyzer is a
of monitoring RF signals within a range
HORIZONTAL Sweep Selector Control (26)
kHz/Div positions for spectrum analyzer
Operation. The RF frequency displayed on VFD (37) is the spectrum
analyzer center frequency. The spectrum analyzer bandwidth is auto-
matically selected.
4-47
02
pn alae ae
——1 SIGNAL
NT AMA mT NOISE
Hl ad iid ees
SIGNAL ee
BANDWIDTH
Lid.
Figure 4-6 Typical Spectrum Analyzer Display
VERT POS Control (27)
Controls Spectrum Analyzer vertical position and allows adjustment of
reference level by one scale division over range of vertical axis.
HORIZ POS Control (30)
Controls horizontal position of Spectrum Analyzer and limits this
control to, one, division Vert. oneright.
HORIZONTAL Sweep Selector Control (26)
HORIZONTAL /DISPERSION BANDWIDTH
l kKHZ/DLY 300 Hz
2 kKHZ/DITV 300 Hz
5 kHz/DIV 3. Hz
LQ KHZ /DIY 3 kHz
20 kHz/DIV suk Hz
50, kH2/ DIN 30 kHz
» ly. Mey Diy . 30 kHz
.2.MHz7 DIY 300 KHZ
~5 Miz/Diy 30 kHz
1 MHz2/DIV 30 kHz
Table 4-11 Horizontal Sweep Selector Control
(Analyzer Dispersion Control )
Settings
4-48
02
4-9-2 Spectrum Analyzer Operation
To calibrate analyzer base line, perform the following steps:
Do gee Se eek reres is a PROCEDURES “cob ey ion alt saab tae nt
eg Place the FM/AM-1200S front panel controls to the settings
listed in Table 4-10.
ae Set HORIZONTAL Sweep Selector Control (26) to any mS/Div
Position.
3. Adjust VERT POS Control (27) to center trace directly over
center horizontal graticule.
4. Set HORIZONTAL Sweep Selector Control (26) to "1 MHz/Div"
Position and MODE Selector Control (39) to "GEN": Position.
S Adjust HORIZ POS Control (30) to center signal directly over
center vertical graticule.
With the spectrum analyzer baseline calibrated, a -30 dBm RF signal
applied to ANT Connector (34) will indicate a full scale display.
4-10 TONE GENERATOR OPERATION
The FM/AM-1200S/A has two independently controlled tone generators (one
variable and one fixed). The variable tone generator is capable of
generating modulation sinewave signals within a range of 2 Hz to 30 kHz
(in 0.1 Hz increments). All other waveform modulation signals are
Sauini a range of 2 Hz, to, 10 kHz (in 0.1. Hz increments). The fixed tone
generator output is a 1 kHz sinewave. The frequency and wave shape of
the variable tone generator is selected by the FM/AM-1200S/A Keyboard
(18) and displayed on the VFD (37) when the Keyboard "TONE" key mode is
selected. The output level of each tone generator can be individually
controlled.
4-49
05
4-11 BASIC RS-232 OPERATION
This paragraph contains basic instructions for operating the FM/AM-
1200S/A using an RS-232 or GPIB compatible external device. Using these
instructions, the operator can select any available parameter of the
following FM/AM-1200S/A functions:
DTMF OF ESET TMT SSOP eS EF) METER
TONE RF TONE WAVEFORM DGS MODULATION
4-11-1 FM/AM-1200S/A INITIALIZATION
The initial communication between the FM/AM-1200S/A and the external
controller consists of Baud Rate synchronization. The external
controller can be set to any one of the following Baud Rates:
Litas SOU 5 - 4800
Cia ai 600 6 - 9600
3 = Le 7 =" 19700
4 - 2400
Use the following procedure to initialize the FM/AM-1200S/A for RS-232/
GPIB operation:
STEP PROCEDURE
1 Connect external controller to FM/AM-1200S/A at RS-232/GPIB
Connector (43).
DP: Check FM/AM-1200S/A Protocol (Appendix B).
a Press FUNCT suo} On the Keyboard (18), followed by the number
corresponding to the desired Baud Rate as shown above.
Example: Set Baud Rate to 4800
2ND 8 5
Press | |
FUNCT BAUD OPT
“SET BAUD IRATESS” will be displayed on” VED (37%
4, Type two CR (carriage returns) on external controller. "RS-232
ENABLED" should be displayed on VFD (37).
ay If a computer is available, a program may be used for control.
The following example will work on IBM-compatible types. Notice
that Baud Rate is 9600 in the example.
4-50
05
Peer on COMNT29008 ON «8.1 .6S$ LDS bE" AS #1
20 PRINT #1, "2"+CHR$(13)
32 INPUT "CMD: ";CMD$
49 IF CMD$="QUIT" THEN 169
a0 PRINIDEL, CMDS
69 IF RIGHT$(CMD$,1)="2" THEN GOSUB 129
70 IF CMD$ = "MTR1" OR CMD$ = "MTR2" THEN GOSUB 129
80 IF CMDS = "MDS" “THEN GOSUB 129
99 IF CMD$ = "DVMAC" OR CMD$="DVMDC" THEN GOSUB 129
19) IF CMD$ = "UOK" THEN GOSUB 129
119 GOTO 39
E2Po INPUT FL RET$
139 PRINT RET$
L440" TE REIS ="**"" GOTO 129
159 RETURN
169 END
4-11-2 RS-232 COMMAND PROCEDURE AND DATA STRUCTURE
All FM/AM-1200S/A functional commands and data information are trans-
ferred over the RS-232 as uppercase ASCII alphanumeric character strings
designed to replace the front panel controls.
All input commands sent to the FM/AM-1200S/A are placed in an internal
queue that will accommodate up to 128 bytes of data. Command strings
may be packed together, but the individual commands must be separated by
a colon ":" delimiter. The colon ":" may or may not cause the command
to be executed immediately, depending upon the type of external
controller being used. The following ASCII Characters will always ter-
minate the command or series of commands:
ASCII Carriage Return (0D) - CR
ASCII Line Feed (OR) =! LF
Maximum command string length including spaces and delimiters is 128
Characters. If the command string exceeds 128 characters, everything up
to the most recent delimiter will be accepted and the rest ignored. All
Spaces will be ignored except when using the "!" command.
Returned data to the external controller will not be packed together in
a string. Instead, each set of data returned will be on an individual
line and sent out in the order in which its command was sent. That is,
the first "get" instruction sent in a command string will cause the
returned data to be on the first line of the output; the second "get"
instruction will cause the returned data to be on the second line of the
Output, and so on.
Data inputs that are out of specific range will generally default to the
minimum values or initial condition values.
4-51
02
4-11-3 ALLOWABLE RS-232 COMMAND FORMATS
FM/AM-1200S/A communication with an external controlling device requires
use of the allowable RS-232 command formats listed in Table 4-12.
COMMAND
FUNC=VALUE
CERRY or Colon )*
Func(nn)=VALUE*
FUNC (CR or Colon)*
FUNC (nn)
fCR OT. Colon) *
FUNC (nn) ?*
PT Oils
(nn)
Linefeed,
Value
4-52
02
DEFINITION
Sets memory location @ of
selected’ function sto.va blue
selected .and..executes .it.
Programs memory location
(6 to.15). of selected
function to value selected.
Does not execute selection.
Executes value of selected
function stored in memory
locatten —.
Executes value of selected
memory location (@ to 15)
of selected function.
Displays on VFD the value
of selected memory location
(G.thru 15) of, the’ selected
funcl Top.
ALE 20ER a DOO.Ge DIM s Per seh lke .
PE Sts ur hr ON Wine
EXAMPLE
AFF=12345 .6
Sets Tone Generator
memory location @
to..12345 .6 Aza
executes it.
RFF6=345 .6666
Programs RF Fre-
quency memory loca-
tion 6 to 345 66e0
MHz.
DIMF:
Executes value
stored in DIMF
memory location @.
PUL OEY ce
Executes value
stored in memory
location 12 of the
PULSE func tio
Rrees
Displays value of
RF memory location
AFF10?
Displays value of
Tone Generator
memory location 10.
MTR2.,. PUL ,) Pa
function preset number (0 thru 15).
Carriage Return or Colon
function command value field.
SS
Table 4-12
terminates command.
Allowable Command Formats
4-11-4 RS-232 REMOTE COMMANDS
In the remote mode, remote commands override the FM/AM-1200S/A front
panel controls and switches.
RS-232 Remote Commands, listed in Table
4-13, must be preceded by the REM Command.
FUNCTION
PeCeIVER
RF PH x
RFR=x
RFFn?
RFFn
RFEX
Zz
~<
Table 4-13
RS-232 COMMAND
A | wD
Get natts
ada
DESCRIPTION
Puts FM/AM-1200S/A in Remote Mode.
Puts FM/AM-1200S/A in Receive
Mode.
Programs RF Frequency.
n 6 to 15 RF Memory Location.
X OBB .9000 to 999.9999
Programs and executes RF Frequency
specified by Memory Location @Q.
X = PPP.PPPB to 999.9999
Displays RF Frequency from Memory
Location none VEDs.cn = 8 to 15.
Executes RF Frequency specified by
Memory Location n.
n= @ to 15
Sets FREQ ERROR Meter to RF range
as specified by x.
x = 1 to 6
SOC HZ RF
L0.0-4H ZIRE
300 Hz RF
li KAZ) RE
S-khZT Rr
10 kHz RF
Hor WM
|e | (am |e
Sets Modulation Meter.
(* indicates Full scale)
X= 256061 3220.,4..60
2 2. KHZ: OY a2 0m Fe Sa
Geebe Kiz-or,r 50% F.S.*
22 70 «ktiz or 200%, F.S.*
69 60 ‘kKizoor 600% FuS.*
|
RS-232 Remote Commands
4-53
05
FUNCTION RS-232 COMMAND
RECEIVER (cont) SIG
15A
156A
Re
159P
GENERATE REM
RFFn=x
@
m
=
7
aA |
=i
i]
x<
RFFn?
RFFn
AF Fin=x
AFF=x
DESCRIPTION
Sets Modulation Meter to measure
relative signal strength
(uncalibrated).
Sets the Modulation Meter to 15
Watt range to measure average
power.
Sets the Modulation Meter to 150
Watt range to measure average
power.
Sets the Modulation Meter to 15
Watt range to measure Peak power.
Sets the Modulation Meter to 150
Watt range to measure Peak power.
Puts FM/AM-1200S/A in Remote mode.
Puts FM/AM-1200S/A in Generate
mode.
Programs RF Frequency.
n = 6 to 15 RF Memory Location
X 999.9990 to 999.9999
Programs and executes RF Frequency
specified by Memory Location @Q.
X = P09.0999 to 999.9999
Displays RF Frequency from Memory
Location n on VFD.
n = § to 15
Executes RF Frequency specified by
Memory Location n.
nee 9 elo VES
Programs Tone Generator Frequency.
n Memory Location 9 to 15
X = $9999.8 to 99999.9
Programs and executes Tone
Generator Frequency specified by
Memory Location Q
X = PPP99.9 to 99999.9
Table 4-13 RS-232 Remote Commands (Continued)
4-54
05
FUNCTION
RS-232 COMMAND
GENERATE (cont) AFFn?
DUPLEX
AFFn
WAVn=x
WAVn?
= BS iar?!
Stet
> Niegl tpee
RFFn=x
RFF=x
RFFn?
RFFn
DPXn=x
DPX=x
DESCRIPTION
Displays Tone Generator Frequency
from Memory Location n on VFD.
n=, Oto LS
Executes Tone Generator Frequency
specified by Memory Location n.
n = @ to 15
Programs the Tone Waveform.
n = # to 15
xX = SIN,SQU,RMP,TRI
Displays Wave Shape from Tone
Memory Location n on VFD.
n= 2 to.15
Puts FM/AM-1200S/A in Remote mode.
Puts FM/AM-1200S/A in Duplex mode.
Programs RF Frequency.
n = § to 15 RF Memory Location
X 929.9900 to 999.9999
Programs and executes RF Frequency
specified by Memory Location Q.
X = $09.9990 to 999.9999
Displays RF Frequency from Memory
Location wm oniVFD.
n = @ to 15
Executes RF Frequency specified by
Memory Location n.
na OF tov 15
Programs Duplex Offset.
n = @ to 15
x = -49.99 to +49.99
Programs and Executes Duplex
Offset specified by Memory
Location @Q.
x = -49.99 to +49.99
Table 4-13 RS-232 Remote Commands (Continued)
4-55
05
FUNCTION RS-232 COMMAND
DUPLEX (cont) DPXn?
DPXn
DUPLEX GENERATE REM
DPG
RE Frnex
RFF=x
RFFn?
RFFn
DPXn=x
DPX=x
DPXn?
DPXn
DESCRIPTION
Displays Duplex Offset from Memory
Location n on VFD.
n= "8" tolls
Executes Duplex Offset specified
by Memory Location n.
n= 8 to 15
Puts FM/AM-1200S/A in Remote mode.
Puts FM/AM-1200S/A in Duplex
Generate mode.
Programs RF Frequency.
n flo ne Bh)
xX = $99. 0999 to 999.9999
Programs and executes RF Frequency
specified by Memory Location @.
X = PPG. PPGH to 999.9999
Displays RF Frequency from Memory
Location non, VFD.
pte ‘he Of ad Bae
Executes RF Frequency specified by
Memory Location n.
n = @ to 15
Programs Duplex Offset
n
SP as
-49.99 to +49.99
X
Programs and executes Duplex
Offset specified by Memory
Location
X = $99. 9999 to 999.9999
Displays Duplex Offset from Memory
Location n on VFD.
n= 8 Voels
Executes Duplex Offset specified
by Memory Location n.
n= @ to 15
Table 4-13 RS-232 Remote Commands (Continued)
4-56
05
FUNCTION
TONE FORMATS
RS-232 COMMAND
DTMn=x
Or
_DTMFn=x
DTMn?
or
DTIMFn?
DTMn
or
DTMFn
DIME
PULn=x
or
PULSn=x
or
PULSEn=x
PUL=x
or
PULS=x
or
PULSEn=x
PULn?
or
PULSn?
or
PULSEn?
DESCRIPTION
Sets FM/AM-1200S/A to Remote.
Bele DIMF Phone #.
= Memory Location §# to 15
Up Core dagits (0+9,A,B,C,
Testor)
‘
Programs and executes DIMF Phone #
specified by Memory Location 0.
Uy Le Lor Ut Us”Y (0-93 As Dy G.,
D1 s0re ©)
Displays DITMF Phone # in Memory
LecCatioane th ON VEL.
= 9 to 15
Executes DIMF Phone # specified by
Memory Location n.
= pu 8 A
Sets FM/AM-1200S/A to DITMF Encode
operation and returns DIMF value
displayed on VFD after reception.
(FM/AM-1200S/A must be set to
Receive Mode and correct RF
Frequency must be executed. )
Programs PULSE Phone #.
n = @ to 15
x wo up. LO 16 aigits. (0-9, A,8,C,
NPS a Te
Programs and executes PULSE Phone
# specified by Memory Location 9.
“erup coe tor adrarts (p-9 A. —, Cy,
OS ae
Displays PULSE Phone # in Memory
Location n on VFD.
= § to 15
Table 4-13 RS-232 Remote Commands (Continued)
4-5/7
05
FUNCTION RS-232 COMMAND
TONE FORMATS
(cont)
eae
VF1n
MEASUREMENT REM
DESCRIPTION
Executes PULSE Phone # specified
by Memory Location n.
n= 8 tocw)
Sets DCS to the Octal value
specified by x.
eae 0. TO 77178
Displays the DCS value on VFD.
Executes DCS value.
Executes Variable Frequency PULSE
at 10 pulses per second.
n = DIMF/PULSE Memory Location
From Oto} 15%
(Tone Generator Frequency Memory
Location 9 must be programmed to
desired frequency and waveform. )
Executes Variable Frequency PULSE
at 20 pulses per second.
n = DIMF/PULSE Memory Location
trom-ertorls.
(Tone Generator Frequency Memory
Location % must be programmed to
desired frequency and waveform. )
Sets FM/AM-1200S/A to Remote.
Sets VFD display to meters and
returns current value of FREQ
ERROR as specified by range
selected.
Sets FREQ ERROR Meter to RF range
as specified by x.
= 1 to 6
<
30 Hz RF
100 Hz RF
300 Hz RF
1. kHz» RF
3 kHz RF
10 kHz RF
Hor WPM
Table 4-13 RS-232 Remote Commands (Continued)
4-58
05
FUNCTION RS-232 COMMAND
MEASUREMENT AFEx
(cont)
MTR2?
yo)
x<
15A
159A
L5P
159P
—”N
mt
<p)
DIS
DESCRIPTION
Sets the FREQ ERROR meter to audio
range as specifed below by x.
tse tO. 3
Dmg 35 HZ
et=e30 HZ
wees OU OratZ
Sets VFD display to meters and
returns current value of modula-
tion as specified by range and
function selected.
Sets Modulation Meter to kHz/%x10
range as specified by x.
(*tarndicates FuldScale).
Ke vaien’? 5 -6---2.0:, G0
Zo Been Kis OFAZCOS F.S.*
G-=+6~KiHzor- 60% F.S.*
20 = 20, kHzeor (200% F.S.*
60 = 60 kHz or 600% F.S.*
Sets the Modulation Meter to 15
Watt range to measure average
power.
Sets the Modulation Meter to 150
Watt range to measure average
power.
Sets the Modulation Meter to 15
Watt range to measure Peak power.
Sets the Modulation Meter to 150
Watt range to measure Peak power.
Sets Modulation Meter to measure
relative signal strength
(uncalibrated).
Sets the Modulation Meter to
measure distortion on 0% to 20%
range.
Table 4-13 RS-232 Remote Commands (Continued)
4-159
05
FUNCTION RS-232 COMMAND DESCRIPTION
MEASUREMENT SID Sets the Modulation Meter to
(cont) measure SINAD on 3 dB to 20 dB
range.
Sets the Modulation Meter to
measure the internal battery
voltage on 0 to 20 VDC range.
BAT
MDS? Gets Modulation control setting as
shown below.
1 = AM NAR
2 = AM NORM
3...= SSB
4 = FM NAR
5 = FM MID
6 = FM WIDE
Sets Modulation control to AM NAR.
AM2 Sets Modulation control to AM
NORM.
”
~N
ee]
Sets Modulation control to SSB.
FM1 Sets Modulation control to FM NAR.
FM2 Sets Modulation control to FM MID.
FM3 Sets Modulation control to FM
WIDE.
DVMAC Sets auto-ranging voltmeter to
read AC volts.
DVMDC Sets auto-ranging voltmeter to
read DC volts.
DVMRM? Gets auto-ranging voltmeter
reading. DVMAC or DVMDC must be
executed prior to this command.
DISPLAY MESSAGE 1x Will display up to 16 ASCII
ON VFD - Characters on VFD.
x = Desired Message
Table 4-13 RS-232 Remote Commands (Continued)
4-60
FUNCTION RS-232 COMMAND DESCRIPTION
GO TO LOCAL LOC Sets operation to Local mode,
returning switch control to the
front panel.
IDENTIFY UOK Will return a percent sign (%) if
on line.
REPLY IDENTIFY RID=ON Enables reply identify.
RID=OFF Disables reply identify.
RID? Returns the Reply Identifier
SeCLING,. Oncor OLB.
VER? Displays version number of
FM/AM-1200S/A firmware.
STAT? Visplavs Go Ore "LO Indicate com
mand error.
o = No Error
1 = System Error
DEL=(decimal #) Changes the colon (:) de-limiter
to another character entered as
the decimal equivalent of the
ASCII character, range 1-127.
Example: DEL = 44, changes the
delimiter to comma C,1.
DEL? Displays the decimal value of
the current delimiter.
SCAN SCAN = (from) Sets SCAN start/stop using
(delimiter) (to) @-15 RF Memory Locations.
SCAN? Displays current RF Memory
Locations programmed for SCAN.
SCAN Executes SCAN function.
RESUME=X.X Sets resume time in seconds.
RESUME? Displays current resume time
programmed.
Table 4-13 RS-232 Remote Commands (Continued)
4-6]
05
FUNCTION RS-232 COMMAND DESCRIPTION
STEP. STEPR=X.XXXX MHz Sets RF Step Increments.
STEPR? Displays current RF STEP
setting.
STEP T =X2Xignz Sets Tone STEP Increment.
STEER h2 Displays current Tone STEP
setting.
STEPR+ Increments RF by RF STEP setting.
STERRs Decrements RF by RF STEP setting.
STEPT+ Increments Tone by Tone STEP
Ser vaing.
STEPT - Decrements Tone by Tone STEP
setting.
SQUELCH SQUELCH? Returns 1 or @, squelched (1)
or unsquelched (Q).
Table 4-13 RS-232 Remote Commands (Continued)
4-62
05
SECTION 5 - AVAILABLE OPTIONS
S-1 GENERAL
The .2 PPM Frequency Standard is standard equipment for the FM/AM-1200A
S/N 1500 and on and for the FM/AM-1200S S/N 5412 and on.
5-2 -2 PPM FREQUENCY STANDARD - OPTION 01
In addition to the standard features of the FM/AM-1200S/A, several
optional features are available. These include:
5-3 -O5 PPM FREQUENCY STANDARD - OPTION 02
The .05 PPM Frequency Standard provides the most stable frequency stan-
dard available for the FM/AM-1200S/A.
INOTE}
The .05 PPM oven oscillator is powered by the
internal battery when the test set is switched
to battery operation. The FM/AM-1200S/A will
turn on and operate immediately in the battery
mode but the oven oscillator will not be within
Specifications without a required 15-minute
warm-up period (with the test set at room temper-
ature). Since the operation period using battery
power is limited to approximately 30 minutes, it
is therefore recommended that the FM/AM-1200S/A
be connected to an external AC or DC power source
for the required 15-minute warm-up period.
5-4 BATTERY - OPTION 04
The Battery is standard equipment for the FM/AM-1200A S/N 1510 and on
and for the FM/AM-1200S S/N 5562 and on.
04
5-5 GENERATE AMPLIFIER - OPTION 05
5-5-1 GENERAL
The Generate Amplifier is a 30 dB amplifier intended to increase the
output level of a generated signal above the normal maximum level by the
service monitor. It is not designed to receive any signal directly from
a Unit Under Test (UUT); however, if properly installed, it can be used
to transmit and receive signals "off the air", using the antenna.
{CAUTION}
DO NOT TRANSMIT FROM A UUT DIRECTLY INTO THE
GENERATE AMPLIFIER, OR THROUGH AN EXTERNAL
ATTENUATOR. DAMAGE TO THE GENERATE AMPLIFIER
AND/OR THE SERVICE MONITOR WILL RESULT.
5-5-2 INSTALLATION
Insert the banana plug on the Generate Amplifier into the AUX PWR Jack
on the Front Panel of the Service Monitor and connect the BNC connector
to the T/R Jack (reference Figure 5-1).
For Direct Connection TO UUT:
Connect coax cable between the UUT Test Jack on the Generate Amplifier
and the Microphone Jack or other audio input on the UUT.
For Radio Installation Checkout:
THIS TEST MUST BE PERFORMED WITH. THE.SERVICE
MONITOR AND UUT INSIDE A SHIELDED AREA TO
PREVENT UNRESTRICTED RADIATION OF RF SIGNALS.
04
T/R
JACK
GENERATE
AMPLIFIER
UUT
Figure 5-1 Generate Amplifier Installation
Connect coax between Antenna Jack on the Front Panel of the Service
Monitor and the Antenna Jack on the Generate Amplifier. Connect
accessory antenna to the UUT Test Jack on the Generate Amplifier.
5-5-3 OPERATION
Refer to Section 4 and perform the procedures for generating and
Geceiving RF signals.
5-6 MICROPHONE - OPTION O6
This option provides a ceramic element microphone to use for voice modu-
lation.
5-7 TELESCOPING ANTENNA - OPTION 07
This option provides a metal, telescoping antenna which will increase
the distance at which a transmitted signal can be picked up at the
antenna connector.
5-8 SOFT PADDED CARRYING CASE - OPTION 09
This option provides physical protection for the FM/AM-1200S/A if the
need arises to transport the test set between job sites.
02
5-9 DIGITAL VOLTMETER AND DTMF DECODER — OPTION 10 (FM/AM1200A ONLY)
The Digital Voltmeter is standard equipment for
FM/AM-1200S units Serial Number 9267 and on.
5 oS eG NE RAY
The Digital Voltmeter and the DTMF Decoder are only functional if the
optional DVM T/0/PC Board COptnoia os instal 1 ed:
5-9-2 DIGITAL VOLIMERERJOP ERAT ON
FM/AM-1200S/A CONNECTORS
AND INDICATORS APPLICABLE
TO DIGITAL VOUCTIMEDER
OPERATION:
20 SCOPE/DVM Connector
37 VFOD
faR
images emaex:
SRSERE SRERZ
{SBlRF URE BR:
BESO YBRHEE| ~~
i Way GP tome Ben Bs Dy ME Oe OP OE
" FM/AM-1200A
VERT POS INT FOCUS HORIZ POS
VERTICAL HORIZONTAL
1— | —— 0
ea
s-, —] n—, 0
2- 1 Tomt— -?
$- 0”
OFF ‘RESID
=
i
cat i
TONE nw
Figure 5-2 FM/AM-1200S/A Front Panel Controls
Applicable to Digital Voltmeter
Operation
CONTROL SETTING
18 Keyboard As req’d
Ce PWR/OFF/BATT Switch "PWR" or “BAT aS
Table 5-2. FMPAM=FZ00S7A Front Panel Contrors
Applicable to Digital Voltmeter
Operation
Table 5-1 lists the FM/AM-1200S/A front panel controls applicable to
the Digital Voltmeter function. The Digital Voltmeter is capable of
measuring AC or DC voltages up ‘tod smaximum of 4100 VWoltsA The twveEeD (Coie
displays the measured voltage. The scale displayed on the VFD (37) is
auto-ranging, depending on the voltage input.
5-4
06
To use the digital voltmeter perform the following steps:
STEP PROCEDURE
{CAUTION}
DO NOT EXCEED 100 VDC OR 100 VRMS INPUT OR DAMAGE
TO THE FM/AM-1200S/A MAY RESULT.
1. Connect unknown signal to SCOPE/DVM Connector (20).
2. Select digital voltmeter function by pressing: [2 7
3. Select AC or DC mode by pressing: for the desired display on
f
the VFD (37).
4. Read voltage level of input signal on VFD (37).
The input signal may also be displayed on the CRT
Display (31) at the same time as a voltage reading
1s being taken. Refer to paragraph 4-8 for Oscillo-
scope Operation.
{CAUTION}
WHEN TAKING LOW VOLTAGE MEASUREMENTS (10 mV OR
LESS) USING THE DVM, PLACE THE VERTICAL ATTENUATOR
SELECTOR CONTROL (24) TO ANY "“kHz/%X10" POSITION TO
DISABLE.
5-9-3 DITMF DECODER OPERATION
FM/AM-1200S/A CONNECTORS
AND INDICATORS APPLICABLE
TO DTMF DECODER OPERATION:
itr TLR Connector
34 ANT Connector
37 VFD
Figure 5-2 FM/AM-1200S/A Front Pane! Controls
Applicable to DTMF Decoder Operation
CONTROL SETTING
18 Keyboard As req'd
Z2 PWR/OFF/BATT Switch "DWR" of “BAIGS
39 MODE Selector Control pel "Yl ig
Table 5-2 FM/AM-1200S/A Front Panel Controls
Applicable to DTMF Decoder Operation
Table 5-2 lists the FM/AM-1200S/A front panel controls applicable to
the DIMF Decoder function. The DTMF Decoder will decode up to sixteen
digits and will display the digits on the VFD (379%
To use the DTMF Decoder, perform the following steps:
See PROCEDURE
1. Place the FM/AM-1200S/A front panel controls to the settings
listed in Table 5-2.
2. Using Keyboard (18), enter RF Frequency corresponding to
frequency on which DIMF is to be transmitted.
3. Connect an antenna or coax cable to the ANT Connector (34). aa
any transmitted signal is too strong for the ANT Connector power
limitation (1/4 watt maximum), connect the coax cable to the T/R
Connector ((41):.
05
S GE.P PROCEDURE
4, ress: (aa | a on Keyboard (18).
IMTS
5. Transmit DIMF tone sequence from source.
6. DITMF tone sequence (up to sixteen digits) will be decoded and
displayed on the VFD (37).
7. If another DIMF tone sequence is to be decoded, again press:
OTMF ENTER
=| =
IMTS
oe
05
5-10 EUROPEAN SIGNALING (ENCODE/DECODE) - OPTION 11
5-10-1 GENERAL
With the FM/AM-1200S/A European Signaling Option (Option 11) intalled,
the operator can select any of the following Sequential Tone Formats:
CCIR LVedd NATEL eal
EEA Fy tg We EURO
EIA ZVEI3 5/6
Once the desired tone format is selected, the user may edit, receive,
or generate the tone sequence. This option automatically handles
repeating digits so a repeat designator is not required for output.
5-10-2 FIVE DIGIT SIGNALING FORMAT OPERATION (INCLUDES CCIR, EEA, ETA;
ZVEI1, ZVE?2, ZVEIS. NATE ANDREURO)
This option to the FM/AM-1200S/A allows the operator to check pager
function using any of the above listed formats in either GENERATE or
RECEIVE Mode. There is no direct mode with this option. The user may
enter up to five digits when programming this format by utilizing the
following procedure:
SEP PROCEDURE
1. Program the format by pressing: (Fe ee].
METER || FUNCT OPT
ae User the Cee cursor control keys to scroll through the
D C
tone formats in the following sequence: CCIR, EEA, EIA, ZVETR
ZVEIT2, .ZVEL3, NATELZ EURO, 95/6, 2) (iwo Tone). "User ine.
= and cursor control keys to move the cursor desired position
A
B
ie
)
and the [3 and as keys to increment and decrement the digits as
C
needed. Digits may be entered or edited regardless of the FM/AM-
1200S/A GENERATE/RECEIVE Mode.
3. To execute the tone sequence (in either GENERATE or RECEIVE
Mode), DES Ss EXEC |[~ 2ND 3
STEP FUNCT OPT
Paragraphs 5-10-3 thru 5-10-8 give examples of executing European
Signaling formats.
Meonouyo |} (1961 | 1981) 600 | 2400 | 2400] 2200] 16338) b00'[ 979.3
903.1
07.4
oe 0
u
7
6
154 601.0
5
5
)
54.0
52mS
Table 5-3 Toneset Frequency Table
ory -3S PROGRAMMING AND- EXECUTING ZVET2 IN- GENERATE MODE
To program and execute ZVEI2 in the GENERATE Mode, perform the follow-
mmo steps:
ST EP PROCEDURE
PROG 2ND 3
= |
a Press: [Lweter |{ FuNcT || oPT
The VFD indicates:
EIEIZR) | jal@iaiei@y | | Lt |
ae Beg hay CHAI yes ied
(or the last executed Encode/Decode fuction)
t 4
Poco t
Ls orese-iil or UE Got Ga FD kl dob Ss
Mee! lel@iai@i2 || | |
CAV AE Ad: VARUARU AR ARTA)
- 1 2 3 4 5
ellie co. ccs
‘a Press: B_ ji tops }|_20Ps J} opt _}|_opt_}|_oPt (or desired tone sequence).
THe VED IRATCaL eS:
EK] eelelaia@ || |
rk Aaa RG 8 CIZIarias ids
5c i9
06
SOER PROCEDURE
‘ax
eee
a Press:
The FM/AM-1200S/A’ iS now programmed for ZVEI2 tone Tormat.witnia
tone sequence of) 12345 U0 70 generate avione sequence rensure ie
FM/AM=1200S7A Tse rin, GENERATE Mode: (refaparagraph 4-6):
Oe
53. Press: [ste _}[Funct jot to execute the tone sequence.
5-10-4 Executing Repeat Tones
Using the procedure in paragraph 5-10-3 will generate the programmed
tone sequence once; tt wilt not repeateatself.°© Tovrestart the seq
quence, it must be executed again.
When repeating digits are found, however, the "R" (Repeat) tone is gen-
erated. For example. Mate
is programmed, the FM/AM-1200S/A will generate "1R2R3".
Repeat tones may be entered and generated in either or two methods:
SHUR Sty PROCEDURE
PROG 2ND a
ate Press: Lwem |[ Funct || oer
a0 : ae
é Pressit_ 8 j to move the cursor to. the desired ViEDe digitand pres-
et co aR
me Hl one
D or c unt? eethe TR ceheracter gppears at thot “cursor
Focation:
3. Alternatively, enter the “R”=chanacter Dy moving tie (CUrSOre.Le
2ND +/-
; a ari
the desired location in the tone sequence and pressing: Lpncr]l 4
The “R® chardeteriwill appeamiminethat ‘cunsor location.
EXEC |[ 2ND 3
4. Press Lstep }L Funct ||_oPr to execute the tone sequence. Where the "R*
character appears, the repeat tone will be generated.
5-10
06
5-10-5 EXECUTING FIVE DIGIT FORMAT IN RECEIVE MODE
To receive a tone sequence, program the applicable tone format and per-
form the following steps:
STEP PROCEDURE
meee turn MODE Select-Control-(39)-to “ REC".
ae turn MODULATION Select Control (3) to” "FM NAR".
3. Enter the applicable RF Frequency (ref. paragraph 4-2-1 and
9-1).
EXEC 2ND 3
SC]
STEP. FUNCT OPT
THe VED will display
4. press:
until a tone sequence is decoded. The decoded tone sequence wil]
be displayed on the VFD until is pressed again.
STEP FUNCT OPT
|NOTE}
When decoding tone sequences, an "R" will only ap-
pear ifsthe first tone Teceived-is the repeat tone:
ACUI | Rett | | 1 |
In all other sequences, the repeat tone will be
automatically decoded as the preceeding digit; e.g.:
ICMR] | WR Heletet | || | |
Compliance with the following will avoid confusion
in the decoding process:
\NOTE}
1. Do not execute the receive option when there is
activity on a receive channel.
2. When decoding sequential numbers or when a poor
Signaling environment is present, the code should be
entered several times to eliminate the possibility of
error.
5-11
05
5-10-6 EXECUTING NATELW ON RECEIVE MODENWITIH REFOSETIT02 128045670 niiz
SREP PROCEDURE
13 Press: [pro].
METER
The VFD indicates:
WICZAIWIiasidijw a
cle Press: 2 3 4 5 7 7] ENTER
- (cs) | oe | | | |
JOPS 20PS OPT OPT OPT OPT DVM
The VFD indicates:
os Press:
PROG |[~ 2ND 3
(om) | = =
METER }{ FUNCT || OPT
The VFD. indicates:
U
7
(Or other format, depending on last tone format programmed)
4. Press: |g and) as) keys until the VFD indicates:
c
0)
5 Press: EXEC {OND 3 | ENTER
(| || om) || om) ||) om)
step_|| Funct || opt
The VFD indicates:
When a tone is received, the "- - - - -" will be replaced with
the decoded tone sequence.
6. Adjust squelch so frequency noise does not interfere with the
decoding process.
\NOTE}
If an "E" appears on the VFD, the tone frequency
for that: digit: is. invalid? or owt=of tolerance
(+50 Hz).
5-12
05
5-10-7 5/6 TONE SIGNALING FORMAT OPERATION
This format allows checking of pager function using a 5/6 tone en-
code/decode. This format will accept a preamble digit plus 5 or 6
trailing digits for signaling sequence. Program this tone format by
the following steps:
STEP PROCEDURE
bs Presisi: PROG {| _2ND 5
(os) || (om) -
METER || FUNCT || OPT
The VFD indicates:
(Or other format, depending on last tone format programmed)
oe 6 ress: [am [Once then mo" unt -thesVEDGindicates:
A 0)
fe Press: ‘| | | =
The VFD dass
belie al
4. Press: [em
: EXEC | 2ND 3
5. To generate the tone sequence, press: | |
STEP. FUNCT OPT
6. Execute this tone format in Receive Mode as outlined in Paragraph
5-10-5.
5-13
05
5-10-8 TWO TONE SIGNALING FORMAT OPERATION
This format allows the setting of two tone frequencies, duration times
for these frequencies and a GAP time between the generation of these
two tones. The programming screen used to set these parameters is con-
figured as:
The segments of
this programming
screen and their
ranges are:
Two-Tone Format
Tone # (1 or 2)
Tone Prequency
(300-3400 Hz)
Tone Duration
(20 mS- 9999 mS)
The | qu |ANd| gy) Keys are used to moved the cursor between the segments of
8 A
D
the screen and the number keys or the = 2h arrow keys are used to
Cc
enter the required digits.
After the Tone #1 frequency and duration is entered, a screen will
appear on the VFD which allows the entry of the GAP time, or interval
between Tone #1 and Tone #2.
As an example, use the following steps to program a Two Tone format
with an 800 Hz tone of 1 second duration for Tone #1, a 750 mS GAP time
and a 600 Hz tone of 2 seconds duration for Tone #2:
SER PROCEDURE
1 We Press: ‘=| 2ND
mm
zB.
FUNCT
3
Ly
OPT
METER
The MED indicates:
(Or other format, depending on last tone format programmed)
9-14
05
Selig St
PROCEDURE
dys
The
e PE t ‘ + 7 + .
Press: wm )once then mm | °° until the VFD indicates:
A
Press: = = o 5 "
| | | |e to move the cursor and enter the
8 8 docs BAUD OCS ocs
Tone #1 frequency. The VFD indicates:
Press: to enter the Tone #1 duration.
0
7
pcs
Set | FAIL SALLA fA|LA\TA
lel?) aly | alaiaia}_ | lalele|
Press: to place the Tone #1 information into the FM/AM-1200S/A
i
(=)
10 PS
VFD indicates:
=|
OCS
0
=
OCS
memory. The VFD Display will switch to the GAP time programming
screen:
Press: | a to enter the GAP (time delay) between Tone #1
ocS OVM OPT OCS
and Tone #2.
The VFD indicates:
lel [eislel | sia | tt EI
Preiss: ie place the GAP information into the FM/AM-1200S/A
memory. The VFD display will switch to the Tone #2 programming
Screen:
Press; twice to move the cursor to the frequency field and
B
=| oo | | to enter the Tone #2 frequency. The VFD indicates:
DCS OPT OCS OCS
TT Gi fa [ATA FA|LALTALTA
el ial] | (ai6iai2|_\eiaialal
oy 5]
05
SHEP. PROCEDURE
Wert presses
- to enter the Tone #2 duration.
OCS
vas
10 PS
LOiga BBY Sis; to enter the Tone #2 information into the FM/AM-1200S/A
0
= (=)
ocs
OCS
memory.
: 2 Pe a el EO tee t T sequence. To repeat the
11 Press o execute the Two Tone q p
STEP FUNCT OPT
the sequence’, | press:\){tenqt«
(oe) || (om) || (om)
STEP. FUNCT OPT
To execute the Two Tone sequence in the Receive Mode, reference the
Notes in paragraph 5-10-5, then perform these steps:
SiPEP PROCEDURE
1.° Set MODE Select} Switch (Soe wom REC’ .s
on Press: [exec [200 3
(co) || (or) || (oe)
steP_|| FUNCT || OPT
The VFD indicates:
eV WE EEE EEE
When a Two Tone Format signal is received, the "---- ----" will
be replaced by the received Tone #1 Frequency and Duration.
3. Use the cursor control keys to access a read the GAP time and the
frequency and duration of Tone #2.
5-10-9 ENHANCED EUROPEAN SIGNALING (ENCODE/DECODE) - OPTION 11
W/SOFTWARE VERSION 4.0-04 (OR HIGHER) INSTALLED
The FM/AM-1200S/A with Software version 4.0-04 (or higher) installed
has two new signalling formats available:
5-15a
05
In addition to the two new formats, all encode/decode signalling for-
haa tave up toreight C8didigits available on the:VFD screen for pro-
gramming (although default programming will still only show five (5)
agit s. )
5-10-10 PROGRAMMING EIGHT DIGIT SIGNALING FORMAT OPERATION (INCLUDES
ECIRG ERAGE LAS CVELI, cVULle. 2UElO oO NAT ELE UROSCCTRH “AND
CCIRH4)
Program the formats in eight digits by the following steps:
STEP PROCEDURE
PROG 2ND 3
=/5/=
‘9 Press: Lweter || Funct |{_ opr
The following will appear on the VFD:
1 2 3 ry 5 6 7 8
=| ===
2. Press: [sors |{ 20Ps || oT OPT || OPT OPT ow || BAUD
The VFD will show:
EXEC] 2ND 3
Led em -
ce Press: {step || Funct || opt
to execute the tone format.
5-10-11 ENHANCED 5/6 TONE FORMAT
The enhanced 5/6 Tone signaling format will accept a preamble digit
Seep -to eight trailing digits.for signalling sequence; e.g.:
5-15b
06
Seal. = ao* DENRA TL OS bs ols erm
The deviation*set selectallows the ‘operator tol program <a tdev tat von vom
up to 7.0 kHz “by the “fol owl md osteps-
Sie PROCEDURE
PROG 2ND 3
= | |
ye Press: Len J{ Funct || opt
=
CI Sey Ee or .¢ } keys until the following appears on the VFD:
’ )
a [i
Deviations of (up Go 17 10 (KHzoemeyape ‘setiwoth the mm, mm) cys
or by entering the desired numbers using the Keyboard (18).
5-10-13 “G” CHARACTER ADDED TO PROGRAMMING
A “G”" (for group) character is now available in programming in the en-
hanced ENCODE/DECOCGE. The operation of the FM/AM-1200S/A encode/decode
with the “G” aliows the operator to designate groups of three tones.
Program “the “G” character by tne Tomowing steps:
Sane PROCEDURE
=e
=)
aie Press: [were || Funct cal
t +
Cc t
Z2. wee tthe Eber mel eye until the following appears on the VFD:
The cursor will .appear, as shown, around the first
character of eine, Tone set.
‘|| oa
on Enter a “G° Character by pressing: |
A letter “G” will: appear andthe ‘cursonmawitlii move to the next
BONE Ghar acter, se. oa:
4. Additional tones may now be entered and output in the normal
manner.
5-15c
06
COMMANDS DESCRIPTION RANGE OF VALUES
CCIR= oeaMaxs2 Euro-code digits
CCIR? 8 (Max) Euro-code digits
EEA= Sot Maxs £uro-code digqrts
EEA? o (Max) ceuro-code digits
EEA
EILA= a ONax DE WroO-~eod eds 47 ts
ETA? SUTWS Woh ade. ai git:
EIA
ZV1= b. {Maxor Enro-code digits
evi? SUK Hax) Euro-code digits
ar
ZV2= oCMex) -Euro=code. didits
2v27 eT hry Payee
ZV3= S (hax) Euroescode digits
oy3? So (hex Euro-code digits
LV3 Execute ZVEI3 Encode
NAT= Set/Execute NATEL Encode 8) (Max) bkura-code digits
NAT? & (Max) Euro=code digits
EUR= o thax) Euro=code digits
fir? Aah een
5/6= o (Max) Euro-code digits
D6? ow taxd EUuro-code digits
CCH= SA Max a EUre=Code digits
CLH? SuChex I Veuro=-code, digits
Table 5-3A European Encode/Decode GPIB/RS-232 Commands
ea lod
07
REMOTE
COMMANDS DESCRIPTION RANGE OF VALUES
CCH4= Set/Execute CCIRH4 Encode 8 Mako: ‘uno -icode dtai re
CCH4? Return CCIRH4 Decoded digits 8 (Max)! Eero “code digige
CCH4 Execute CCIRH4 Encode
2T= Set/Execute 2-Tone Encode Pat) OHM AGtS dC) Oe BC
[Fl = 0-9999 Hz (Freq #1)
F2 = 0-9999 ms (Time #1)
D1 = 0-9999 ms Gap)
F2 = 0-9999 Hz (Freq #2)
D2 = 0-9999 ms (Time #2)
2h? Return 2-Tone Decoded digits Fie? 2 Igy cheer oo OR DZ
rat Execute 2-Tone Encode
EDEV= Set Encode Amplitude Os Or ar eos KHZ. Den,
EDEV? Return programmed Encode OLO0Y On. Ge KN 2 “Die ve.
Amplitude
Table 5-3A European Encode/Decode GPIB/RS-232 Commands
DaAtae
07
oh
ah. car thse
Mae ¢ SRDS:
{HAD TAMGR ARORA 44
WANOFAR ANID
Peace
Aa, ¢ f Fuge a
ft oF ’
eee OES 1640.42),
ates 4029506) aA,
== ue ] \
LORhe< » rie Avi | j D
BLoihe ct: |
Pinter { - i
uth ced
oe vi 1s,
v - < . nt
Stes RG! c,
> eiiv
‘ea
Spay. in f”
mrss brM'
ef? 5 44 oa
Sobipe.. 2
aah bint’ |
nor i ae Pi
a 2 ie
ae gnh muss
i ae
te Fs. :
a is ; ;
vie! A
4 a y ia
. oe i -
Je a hare
wt
reve Ube y's a
; Sari a ’
te 2 ee ar
| ry
erator beret ton hy
Bs daitasn2dns4 ana lit
De Tisiay
Perry oe tk
See Be
a) a4
fran : PATS x fe dei ; he bil need
uke. Tre: 1 ‘eee ing tied "le
ee hes teh
nt DP a
, = a am or ‘ae
' . BB s- RR , x ye Ay:
the ‘ut. Wear ibeer, 1) eae f ime ae a
, rh f . > , he es ‘ oa. 4 e 7
r ‘ oe
PORH VSO. AHO K BH Ih 7
Pion apis OD enol 28s) ouie O7hst yo ine
i
harekty {ioe aa!
| * : (wee + , e
* a }9 Té .y Mm? a fT, r a
Ms : - bond + | 3 i :. z
a ued wi ~ 4 be 4 . | m f a! ;
244 pe 34 by ‘ iw? TD gt oatn
Se hi a ‘ p
a | LOTION
'
»
a
~~ f J 4
y mle Bd
= 0
i 4
oie pease:
when momraD MROTARAMAA RMINOAN
5-11 TRACKING GENERATOR- OPTION 12 (FM/AM-1200S ONLY)
FM/AM-1200S CONNECTORS AND
INDICATORS APPLICABLE TO
TRACKING GENERATOR OPERATION:
14 DUPLEX Output.Connector
a2) CR] Dis piaay
34 ANT Connector
Sve VED
TONE QUI = OMOD ff xT MOD SINAD
Figure 5-4 FM/AM-1200S Front Panel Controls
Applicable to Tracking Generator
Operation
18 Keyboard "As Yeq*d-
22 PWR/OFF/BATT Switch "PWR" or "BARS
24 VERTICAL ATTENUATOR Any position
Selector Control except. "ORPa
25 HORIZONTAL Sweep Fully cw
Vernier Control
26 HORIZONTAL Sweep
Selector Control "1 MHZ/D iy
ci VERT POS: Control "Mid Range"
ZO. ENE, Leonie. As req°ax
29° FOCUS. Control As req'd
30° HORI Z POS Control "Mid Range"
39 MODE Selector Control DUP
Table 5-4 FM/AM-1200S Front Panel Controls Applicable
to Tracking Generator
5-1l1l-1 GENERAL
The Tracking Generator option allows operators to accomplish the tuning
and alignment of radio communications components such as notch
duplexers, circulators, combiners, isolators, etc. The device under
test is connected between the swept RF output present at the DUPLEX
Output Connector (14) and the input to the Spectrum Analyzer at the
ANTENNA Connector (34).
5-15£ Blank/5-16
07
S-11-2 SELECTING TRACKING GENERATOR MODE OF OPERATION
Table 5-4 lists the FM/AM-1200S front panel controls applicable to the
Tracking Generator operation. To use the Tracking Generator, perform
rire following steps:
S LEP ; PROCEDURE
1. Set the FM/AM-1200S front panel controls to the settings listed
in Table 5-4.
2. Connect the input of the unit under test to the DUPLEX Output
Connector (14) of the FM/AM-1200S.
3. Connect the output of the unit under test to the ANTENNA
Connector (34) of the FM/AM-1200S.
[CAUTION]
MAXIMUM CONTINUOUS INPUT TO THE ANTENNA CONNECTOR
(34) MUST NOT EXCEED 0.25 WATTS.
4. Enter the center frequency of the UUT using the procedure
outlined in paragraph 4-2-1.
5. Press: Guid
FUNCT
the VFD:
VAL
following one of these displays will indicate the
currently selected mode of operation. Use the
2 | GIN
LIN
- AN | gs keys to scroll through the modes until the desired
8
selection appears on the VFD.
5517
05
SEA PROCEDURE
{NOTE}
Output levels at the DUPLEX Output Connector (14)
with the Tracking Generator installed are:
Track High: -s dBinets a6
Track Med: wey. aBm +7. dB
Track Low: -40 dBm +5/-10 ds
7 in SPace's Ss =|°° select the desired output level.
oly
Ppt
we
fs
Figure 5-5 Typical Tracking Generator Display of a
Notcnrr Titer notch
kHz/DIV mS/Div
kHz/DIV mS/Div
kHz/DIV mS/DIV
kHz/DIV mS/DIV
kHz/DIV mS/DIV
kHz/DIV mS/DIV
MHz/DIV | mS/DIV
MHz/DIV mS/DIV
MHz/DIV mS/DIV
MHz/DIV mS/DIV
Table 5-5 Horizontal Sweep Selector Control (Analyzer
Dispersion Control) Settings and Horizontal Sweep
Speed
*All Sweep Speeds are variable by using the Horizontal Sweep
Vernier Control (25).
5-11-3 TRACK ADJUST
While using the 3 kHz or 300 Hz resolution band, whenever dispersion,
Sweep speed or bandwidth is changed or when Sweeping an external narrow
band filter, the signal tracking may need to be adjusted.
Press the + or + key to set the FM/AM-1200S to the Track Adjust mode.
The following display will appear on the VFD:
This display will be followed by a number from
to
By continuing to press or hold the + or + key, the waveform trace on the
Spectrum Analyzer screen may be adjusted to maximum amplitude. At the
Same time, the relative number following the words TRACK ADJ will
increment or decrement accordingly. Continue to press or hold the + or
+ key until the trace reaches maximum amplitude.
ENTER
Press - This will set the TRACK ADJ relative number to "0". Any
further adjustment to the trace using the TRACK ADJ mode will then be
incremented from this "0" setting.
To leave the TRACK ADJ mode, simply press any other key on the Keyboard
pe).
5-11-4 VARIABLE SWEEP SPEED
The horizontal sweep speed of the Tracking Generator may be varied to
allow better resolution of frequency and amplitude components by use of
the HORIZONTAL Sweep Vernier Control (25) in a manner similar to that
used to vary the sweep speed of the Oscilloscope.
When the HORIZONTAL Sweep Vernier Control (25) is in the CAL position
(fully cw), the horizontal sweep speed (see Table 5-5) is divided by a
factor of one (1). As the control is turned ccw, the horizontal sweep
Peecrvided by a factor of from one (1) to ten (10).
5-19
04
5-11-5
RS-232 Command
ie
05
RS-232 COMMANDS FOR TRACKING GENERATOR
Definition
Range of Values
DPL= Set Duplex Level HIGH, LOW
(Tracking
Generator
disabled)
DPL? Return Current Duplex Level HIGH, LOW? (OFF
(OFF returned if
Tracking Generator
enabled)
TGL= Set Tracking Generator Level HIGH, MED, LOW
(Duplex disabled)
TGL= Return Current Tracking HIGH, MED, LOW, OF
Generator Level (OFF Returned
if Duplex
enabled)
TGA= Enable/Disable Tracking ON WOE
Generator Adjust. (Tracking
Generator Level must be set.)
Note: Tracking Generator
Adjust must be disabled when
adjustments are complete.
TGA+ Tracking Generator Adjust
Positive (Tracking Generator
Adjust must be enabled)
TGA- Tracking Generator Adjust
Negative (Tracking Generator
Adjust must be enabled)
TGR Reset Tracking Generator
Adjust Reference Number
Table 5-6 Tracking Generator RS-232 Commands
20
5-12 GPIB OPERATION - OPTION 13
5-12-1 GENERAL
This section contains basic instructions for operating the FM/AM-
1200S/A with the optional General Purpose Interface Buss (GPIB) com-
patible external device. Using these instructions, the operator can
select any available parameter of the following FM/AM-1200S/A functions:
DIMF OFFSET IMTS (PULSE) METER
TONE RF TONE WAVEFORM DCS MODULATION
5-12-2 PREPARATION FOR USING GPIB
When the GPIB option is installed, a 24-pin GPIB connector is provided
on the rear panel in place of the standard RS-232 connector. Pinouts
for the GPIB connector are shown in Appendix B, Table B-4. The
operator should insure proper interface between the FM/AM-1200S/A and
the external controller. Once the proper connection is made, the FM/AM-
1200S/A can be initialized with the proper address by using the GPIB
Menu.
5-12-3 FM/AM-1200S/A INITIALIZATION
Use the following procedure to initialize the FM/AM-1200S/A for GPIB
Operation:
STEP PROCEDURE
1. Connect the external controller to the FM/AM-1200S/A at the GPIB
Connector.
a
Press: =| on the Keyboard (18).
FUNCT BAU
3. Using the scroll keys and numbers, select:
9600 BAUD RATE (Selection 6)
NO PARITY (0 = NONE, 1 = ODD, 2 = EVEN)
8 DATA Bits (7 or 8)
PeShOR BV b tl, Oye?)
GPIB ADDRESS (00 thru 31)
5-21
05
5-12-4 REMOTE CONTROL (GPIB) OPERATION
Remote communication with the FM/AM-1200S/A is provided by use of the
GPIB, which conforms to the latest IEEE Standard 488-1978. The FM/AM-
1200S/A has the following capabilities using ASCII encoded character
sbringsy
Complete Source and Accepter Handshake
Talker
Listener
Remote/Local (No local lockout capability)
The GPIB Address is set through the selection.
UN BAUD
All communication with the FM/AM-1200S/A over the GPIB is implemented
with ASCII-encoded character strings. Invalid or improperly formatted
characters are discarded and two asterisks (**) will be returned to the
controller. The ASCII String Commands are stored in a Buffer until
receipt of a Carriage Return, Line Feed, Null Character or "END" mes-
sage.
5-22
05
MNEMONIC
MESSAGE
ATN
DAB
DAC
DAV
soheeaeera
IEEE 488 INSTRUCTION
ATTENTION
Data Byte
Data Accepted
Data Valid
End
Identify
My Listen Address
My Talk Address
Read For Data
Unlisten
Untalk
Refer to the IEEE Standard 488-1978 for further explanation.
Table 5-7 IEEE 488-1978 BUS Messages
5-23
05
5-12-5
MESSAGE
5-24
05
FM/AM-1200S/A AND GPIB MESSAGE INTERFACE DEFINITIONS
ATN
DAB
DAC
DAV
END
MTA
RFD
UNL
UNT
DEFINITION
The FM/AM-1200S/A GPIB I/0 device responds immediately
to process the incoming GPIB controller commands.
The FM/AM-1200S/A GPIB microprocessor responds by status
testing of the GPIB "170 device to accept data byte.
The FM/AM-1200S/A GPIB I/0 device responds immediately
to signal the talker it has accepted the data byte.
The FM/AM-1200S/A responds immediately to signal the
interceptoreTtthas putrvalrdsaataron the Bus,
The FM/AM-1200S/A responds to terminate the command
input from the source and to begin processing the
commands available up to the last valid delimiter.
Same as "END".
The FM/AM-1200S/A GPIB I/0 device responds immediately
by comparing its address with the listen address given.
If-the two-are the same,-?t instructs the processor-to
listen.
The FM/AM-1200S/A GPIB I/0 device compares its address
with the talk address given. If the two are the same,
it instructs the processorpto talk.
The FM/AM-1200S/A GPIB I/0 device signals the source it
is ready for data to be transmitted on the bus.
The FM/AM-1200S/A GPIB I/0 device and the processor
respond to unlisten the teste iser.
The FM/AM-1200S/A GPIB 1/0 device and the processor
respond to untalk the test set.
Table 5-8 GPIB Message Definitions
eee- 6 GPIB TRANSACTIONS
Two examples of GPIB transactions showing the ASCII Character String to
be transmitted followed by the necessary BUS operations to complete the
transactions are shown below. These examples were generated and
executed using a GPIB controller that uses an ANSI Standard Basic
Interpreter with enhancements allowing direct communication over GPIB
using special GPIB. interface hardware. In the examples, the ASCII
Smeracter String, to be transmitted! ioushown first, followed by the bus
operations required to complete the transaction.
men example No. 1 -— Instruct “the FM/AM-1200S/A to set the RF to 500 MHz.
Pa AS TS ring way SURE = 500°" sho] Lowed .by-ccanrihage oneturnn -and
line feed. )
ee eS Ton Saeco, | UNL, MURTY ITALY aA Oe?) OO a DAB "5", DAB
Tee oke 8, DAE LR, DAS LP.
fe Exampler No. dco -) Instruct the —-M/AM-1200S/A ‘to return. the RF Attenua-
t8.0n.
ie ASCII string: "RFF?"
a BUS. Transact 1.0n;:
Ov, UU GCoUe eve Le o URS UNL. MLAs MEAS DAB *.R".,.,.0AB °F", DAB
Deer GR? A Uk.
DD, Input Cycle - UNT., TRARISOIMEAAUMTA SDA TUS, UAB TO", SDAB CR,
DAB LF.
The Input Cycle shows the RF Attenuation to be -10 dB.
See -7 «€6©ASCII OUTPUT COMMANDS TO THE FM/-1200S/A
All input commands sent to the FM/AM-1200S/A are placed in an internal
queue that will accommodate up to 128 bytes of data. Command Strings
may be packed together, but the individual commands must be separated
by delimiters. The delimiters are:
Boel i COLON. 2%
ASGLEL «PERLOD «*% a7
ASeE MUUEST FON PRARR' ¢*
oR at)
08
The Question Mark ("?") will be accepted at any
time and ignored unless it follows a command.
This allows the user to continually interrogate
the output buffer when waiting for a measure-
ment.
The Colon (":") is a general delimiter and may
be used after the Period or Question Mark. Care
must be exercised in using the Period or
Question Mark at the end of a command as they
may change the interpretation of that command.
The following ASCII Characters will terminate the output command or
series of commands:
ASCII Carriage Return (0D) - CR
AS-CII-Line Feed«(OA)-< 9 bF
NULL Character (0) - NL
When the FM/AM-1200S/A is the assigned talker, the EOI line will be set
when a line feed (0A) is sent.
NOTE]
The user's GPIB controller must be programmed to
expect an ASCII line feed (OA) character as the
input string termination.
5-12-8 ASCII OUTPUT COMMAND DATA FORMAT
All spaces will be ignored. Below are some examples of commands which
are valid.
RFF = 100: RFF?
RFF1 = 10:
The above commands set the Reply Identifier Flag which caused the com-
mand label following "RID=ON" to be attached to the response.
59-12-9 RETURN DATA FORMAT
The returned data format convention is similar to the Output Command
Data Format in that all returns will be packed together and separated by
ASCII Colon (":") delimiters. The number of responses returned is
determined by the number of commands transferred in one block. If the
number of responses required causes the internal response buffer to
overflow by being larger than 128 bytes, only the responses up to the
most recent delimiter will be returned.
5-26
03
Data inputs that are out of specific range will generally default to the
minimum values or initial condition values.
pei2-10 REPLY IDENTIFIER
When the Reply Identifier is activated by the command "RID=ON", the
returned information for data or status requests will be preceded by the
command mnemonic and an "=" character. This will continue until the
command "RID=OFF" is given or the FM/AM-1200S/A power is cycled. This
feature is especially useful for identifying measured data that is
returned after a time delay, or data returned from a string of
commands.
5-12-11 ALLOWABLE GPIB COMMAND FORMATS
The following list defines the Commands used to control the
FM/AM-1200S/A under GPIB operation. Qualifiers for each command are
used throughout the following paragraphs and are defined as follows:
An "=" represents a "Set" operation for that command.
A "2?" represents a "get" operation for that command.
A "." represents an “enable” operation for that command.
Data listed under the range column reflects input/output data of the
FM/AM-1200S/A. Data shown in parentheses is input data. Data not
enclosed in parentheses is output data. A dash is used for commands
having no input/output data.
5-27
03
FM/AM-1200S/A communication with an external controlling device
requires use of the allowable GPIB command formats listed in Table 5-/7.
COMMAND DEFINITION
FUNC=VALUE Sets memory location 0 of
(CR or?Colon) selected function to value
selected and executes it.
Func (nn) =Value* Programs memory location
(0 to 15) of selected
function to value selected.
Does not execute function.
FUNC «COR or Colon) Executes value of selected
function stored in memory
Moca tion hh.
PURG nih)
(CR or Colon)
Executes value of selected
memory location (0 to 15)
of selected function.
FUNC (nn) ?*
Displays on VFD the value
of selected memory location
(O.uthru.15) of: the selected
function.
EXAMPLE
AFF=12345.6
Sets Tone Generator
memory location 0
£0 $1:23.45..6, +12 ~ate
executes it.
RFF6=345.666
Programs RF
Frequency memory
Tocation 6 to
345.6666 MHz.
DIMF:
Executes value
stored in DIMF
memory location O.
PUESE S12:
Executes value
stored in memory
location,.12 of ai.
PULSE Tunctionz
RFF2?
Displays value of
RF memory location
rag
AFF10?
Displays value of
Tone Generator
memory location 10.
MTR2,
PUL, PUtiae
* FUNC = AREF, DPX 2-0CS ,2DIM, “DIME, MTR 1.
PULSE S2REF. or WAV?
(nn) = function preset number (0 thru 15).
Linefeed, Carriage Return or Colon =
Value = function command value field.
Table 5-9 BEL command Format
5-28
05
terminates command.
5-12-12 GPIB REMOTE COMMANDS
In the remode, remote commands override the FM/AM-1200S/A front panel
controls and switches. GPIB Remote Commands must be preceded by the
REM Command.
FUNCTION GPIB COMMAND DESCRIPTION
RECEIVER REM Puts FM/AM-1200S/A in Remote Mode.
Puts FM/AM-1200S/A in Receive
Mode.
RFFn=x Programs RF Frequency.
n = 0 to 15 RF Memory Location.
x = 000.0000. to. 999.9999
RFF=x Programs and executes RF Frequency
specified by Memory Location 0.
x= -§-0.0--0000.-to-999 .9999
RFFn Executes RF Frequency specified
by Memory Location n.
n =.0 106 2h5
RFEX Sets FREQ ERROR Meter to RF range
as specified by x.
6
SU Hz KE
OU Hz RE
S00 Hz RF
LOKHZ RE
2 LRA
¥O KHz RF
oO
hte Be NE. res heer
Rx Sets MODULATION Meter to kHz/%x10
range as specified by x.
Caz in G20, 60
2 2°kHZ of 4(20% Full Scale
6 kHz or 60% Full Scale
20 kHz or 200% Full Scale
60 kHz or 600% Full Scale
6
20
60
2)
™m
lop)
x<
ul
AnPwNrer
SIG Sets MODULATION Meter to measure
relative signal strength
(uncalibrated).
Table 5-10 GPIB Commands
Sec?
05
FUNCTION GPIB COMMAND
RECEIVER 15A
(Cont)
150A
—
Nn
mo]
L50P
GENERATE
7
m
=
GEN
RFFn=x
RFF=x
RFFn?
RFFn
AFFn=x
AFF=x
DESCRIPTION
Sets the MODULATION Meter to 15
Watt range to measure average
power.
Sets the MODULATION Meter to 150
Watt range to measure average
power.
Sets the MODULATION Meter to 15
Watt range to measure Peak power.
Sets the MODULATION Meter to 150
Watt range to measure peak power.
Puts the FM/AM-1200S/A in Remote
mode.
Puts the FM/AM-1200S/A in Generate
mode.
Programs RF Frequency.
n-=O-to -15-RF-Memory Locations
x = 000.0000 to 999.9999
Programs and executes RF Frequency
specified by Memory Location 0.
x = 000.0000 to 999.9999
Displays RF Frequency from Memory
location n on VFD.
n73; 0. C6. 15
Executes RF Frequency specified
by Memory Location n.
ine eg as Hale ie
Programs Tone Generator Frequency.
Nee Da ty 15
x = 00000.0 to 99999.9
' Programs and executes Tone
Generator Frequency specified by
Memory Location 0.
x = 00000.0 to 99999.9
Table 5-10 GPIB Commands (Continued)
5-30
05
FUNCTION GPIB COMMAND
GENERATE
(Cont)
AFFn
— ant
REM
DUP
Siu
ne 2c |
DPXn
Table 5-10
DESCRIPTION
Displays Tone Generator Frequency
from Memory Location n on VFD.
nO tor 15
Executes Tone Generator Frequency
specified by Memory Location n.
nc 0) ko a5
Puts the FM/AM-1200S/A in Remote
mode.
Puts FM/AM-1200S/A in Duplex Mode.
Programs RF Frequency.
n = 0 to 15 RF Memory Location.
x = 000 70000 to 999.9999
Programs and executes RF Frequency
specified by Memory Location 0.
x= 000 0000 to 999.9999
Displays RF Frequency from Memory
location n on VFD.
fie ee ns Ae
Executes RF Frequency specified
by Memory Location n.
tie, el, Rags ae Be.
Programs Duplex Offset.
n a TS
X -49.99 to +49.99
Programs and Executes Duplex
Offset specified by Memory
Location 0.
x = -49.99 to +49.99
Displays Duplex Offset from Memory
Lacation on orn VFO.
tsi mn OD to)
Executes Duplex Offset specified
by Memory Location n.
hee 0. to: 15
GPIB Commands (Continued)
FUNCTION GPIB COMMAND DESCRIPTION
DUPLEX REM Puts the FM/AM-1200S/A in Remote
GENERATE mode.
DPG Puts FM/AM-1200S/A in Duplex
Generate Mode.
RFFn=x Programs RF Frequency.
n=O. to.15. RE Memory..lLocati eum
x = 000.0000 to 999.9999
RFF=x Programs and executes RF Frequency
specified by Memory Location 0.
x = 000.0000 to 999.9999
RFFn? Displays RF Frequency from Memory
Tecation n on’ VFDY
Re= Ueto. LS
RFFn Executes RF Frequency specified
by Memory Location n.
Nn: SAD? 60-15
DPXn=x Programs Duplex Offset.
n Oe tovd5
x -49.99 to +49.99
DPX=x Programs and Executes Duplex
Offset specified by Memory
Location 0.
X= -49.99 to +49.99
DPXn? Displays Duplex Offset from Memory
Location n on VFD.
Nnvseletoe ls
DPXn Executes Duplex Offset specified
by Memory Location n.
hut oD etavedls
TONE FORMATS REM Puts the FM/AM-1200S/A in Remote
mode.
DTMn=x Programs DTMF Phone #
or Ne=7OGROALS
DTMF =x x = Upto 16 digits (0-9, A, Bags
Table 5-10 GPIB Commands (Continued)
5-32
05
FUNCTION GPIB COMMAND DESCRIPTION
TONE FORMATS
Programs and executes DIMF Phone #
(cont)
specified by Memory Location 0.
mom Uortcou le digits (0-9, A,B,C,
OM A oe,
Displays DTMF Phone # in Memory
bocet tone oraykD-
ng =VO0t6t 45
DTMn Executes DIMF Phone # specified by
or Memory Location n.
DTMFn iy e0-to-hS
DTME Sets FM/AM-1200S/A to DTMF Encode
operation and returns DIMF value
displayed on VFD after reception.
(FM/AM-1200S/A must be set to
Receive Mode and correct RF
Frequency must be executed.)
Programs IMTS (PULSE) Phone #.
n OVtG 5
X Uo -tovl6digits (0-9, A, 8,
CP — # -07-*)
Programs and executes IMTS (PULSE)
Phone # specified by Memory
Location 0.
x = Up to 16 digits (0-9, A, B,
GOEL Ree thee ek SE
PULn? Displays IMTS (PULSE) Phone # in
or Memory Location n on VFD.
PULSn? Nhe=eOpbtonts
or
PULSEn?
PULn Executes IMTS (PULSE) Phone #
or specified byMemory Location n.
PULSn hae. CO. 15
or
PULSEn
Table 5-10 GPIB Commands (Continued)
5-33
05
FUNCTION GPIB COMMAND DESCRIPTION
TONE FORMATS DCS= sets DCS to “the Octal Vale
(Cont) Specatied py ox.
xX = 0g to 777.
Displays the DCS value on VFD.
DCS Executes DCS value.
VF1n Executes Variable Frequency IMTS
(PULSE) at 10 pulses per second.
n = DIMF/IMTS (PULSE) Memory
Location from 0 to 15
(Tone Generator Frequency Memory
Location 0 must be programmed to
desired frequency and waveform.)
VF2n Executes Variable Frequency IMTS
(PULSE) at 20 pulses per second.
n = DIMF/IMTS (PULSE) Memory
Location from 0 to 15
(Tone Generator Frequency Memory
Location 0 must be programmed to
desired frequency and waveform. )
MEASUREMENT Puts the FM/AM-1200S/A in Remote
mode.
MTR1 Sets VFD display to meters and
returns current value of FREQ
ERROR as specified by range
selected.
se
RFEXx Sets FREQ ERROR Meter to RF range
asi specitaedy byoex*
Cay tpa6
ree 030. HZ. RE
OS LOO! Hz Re
2° Fu SOD SHeeRe
4 = PKHZ RE
5. 2 SK 7 Re
6 = 10 kHz RF
Table 5-10 GPIB Commands (Continued)
5-34
05
FUNCTION
MEASUREMENT
(Cont)
GPIB COMMAND
AFEx
MTR2
Rx
150A
Log;
LODE
SIG
DIS
DESCRIPTION
Sets FREQ ERROR Meter to Audio
range as specified by x.
Xoo fF obo oo
1 = 3° Hz
Ck eS AZ
53 =.300% Bz
Sets VFD display to meters and
returns current value of
MODULATION as specified by range
selected.
Sets MODULATION Meter to kHz/%x10
ranges aso specitaed by x.
XP <4 249-635,61/2 07,7 00
Pe KL, Le ce ee lke Se. A
6. =4.0 KHZ. or; »60%.Fudl., Scale
C0e=seo Kee or sco0s. Fu) Scale
605 =. 60) Klz or 6002; Fuld- Scale
Sets the MODULATION Meter to 15
Watt range to measure average
power.
Sets the MODULATION Meter to 150
Watt range to measure average
power.
Sets the MODULATION Meter to 15
Watt range to measure Peak power.
Sets the MODULATION Meter to 150
Watt range to measure peak power.
Sets MODULATION Meter to measure
relative signal strength
(uncalibrated).
Sets the MODULATION Meter to
measure Distortion on 0% to 20%
range.
Sets the MODULATION Meter to
measure SINAD on 3 dB to 20 dB
range.
Table 5-10 GPIB Commands (Continued)
5-35
05
FUNCTION
MEASUREMENT
(Cont)
DISPLAY
MESSAGE
ON VFD
GO TO LOCAL
EDENT LEY
5-36
05
GPIB COMMAND
DESCRIPTION
Sets the MODULATION Meter to
measure the internal battery
voltage on 0 to 20 VDC range.
Sets MODULATION control settins as
shown:
AM NAR
AM NORM
SSB
FM NAR
FM MID
FM WIDE
Sets MODULATION control to AM NAR.
Sets MODULATION control to AM NORM.
Sets MODULATION control to SSB.
Sets MODULATION control to FM NAR.
Sets MODULATION control to FM MID..
Sets MODULATION control to FM WIDE.
Sets auto-ranging voltmeter to read
VOltS AC.
Sets auto-ranging voltmeter to read
volts DC.
Gets auto-ranging voltmeter reading.
DVMAC or DVMDC must be executed
prior to this command.
Wibl display up to 6 ASCII
characters on VFD.
x = Desire Message
Sets operation to Local Mode,
returning switch control to the
front panel.
Will return a percent sign (%) if
on line.
Table 5-10 GPIB Commands (Continued)
FUNCTION GPIB COMMAND DESCRIPTION
Rt ky: RID Enables Reply Identify
IDENTIFY
RID OFF Disables Reply Identify
RID? Returns the Reply Identifier
setting, ON or OFF
ccc ee version number of
|. Sen bee coer firmware.
STAT Displays @.com, a? to rndicate
command error.
0 No Error
1 System Error
DEL=(decimal #) Changes the colon (:) delimiter to
another character entered as the
decimal equivalent of the ASCII
character, range 1-127.
Example: DEL=44 change delimiter
to comma (,)
CEL? Displays the decimal value of the
delimiter character.
SCAN SCAN Sy Sets SCAN start/stop using
Boece 0-15 RF Memory Locations.
SCAN? Displays current RF Memory Locations
programmed for SCAN.
SCAN Executes SCAN Function. |
RESUME = X. Sets resume time in seconds.
Table 5-10 GPIB Commands (Continued)
FUNCTION
SREP
SQUELCH
9-38
05
GPIB COMMAND
STEPR = X.XXX MHz
STEPR?
SEP Ta iee Xn ae
ShePolee
STEP Re
STEPR-
Sa
STEPT-
SQUELCH?
DESCRIPTION
Ses (RF Step inorements:.
Displays! current RF STEP settings
Sets Tone STEP Increment.
Displays current Tone STEP setting.
Increments RF by RF STEP sett iia
Decrements RF ‘by RF) STEP settiapga
Increments Tone by Tone STEP
setting.
Decrements Tone by Tone STEP
sett inex
Returns 1 for 0, squelched (1)
or unsquelched (0).
Table 5-10 GPIB Commands (Continued)
PROGRAMMING TEMPLATE #1
SIMPLE ENCODE
SIMPLE DECODE
REPEATER ACCESS
SIMPLE HANDSHAKE
REPEATER HANDOFF
Re
7
i |
LAs
.¥
re OO wy oy
eg aay a om PE ,
ie ‘ ae Gein “TaMeiNe
4
i eae
. orl ae , ey a vio ‘i. - ey J vex
TAIT SHA
ee ere - saetie a
'
i } ae ge kira,
r 7 ot eo
ow w S iy
F
;
‘s 5
95, «Se gaae-
A ei 7 14 iA ra ne Pi 2¢
ae
ee aa
ALMA) SHLMMAMDORT Pee
a f eT ay “Ts
ry ius || a,
ee A Le
IAMZOMAIS 249MT2..
4G OMAH a3 ABA
5-13 TRUNKING — OPTION 14 (FM/AM-1200S ONLY)
ea ~ 1° GENERAL
The Trunking Option allows operators to test mobile communications
radios and repeaters using the Johnson Trunked Radio operating system.
The software-controlled test functions utilize the FM/AM-1200S T/R
Connector (11), Duplex Output Connector (14) and ANT Connector (34) to
test the Encode/Decode, Repeater Access and Handoff functions of
Trunking Radio mobile units and the Handshake and Handoff functions of
repeaters.
59-13-2 Trunking Operational Theory
Trunking is the sharing of all available channels ina repeater system
by remote or mobile units with access to that repeaver. ~ A trunking
System is composed of up to 20 repeaters, with each repeater assigned
Mp oO, 250 separate ID,codes... Trunking is. based. on.the theory that an
individual mobile unit, with access to several communication channels
at once, has a low probability of being blocked from transmitting since
time Other subscribers to the system will use it only a small percentage
of the time and that a large number of other subscribers will not use
memer exactly the same instant. Hence, at least one channel will be
free at any given time.
Each mobile unit in a trunking system is assigned a "Home Repeater”
from which it receives digital control information. A listening mobile
unit monitors data from its home repeater to determine on which channel
it is being called by another mobile unit or which channel it may use
fsoea Wants’ to transmit:
Trunking systems are allocated 999 channel pairs in two separate bands
by the FCC.. In’ the lower band of 600 channel pairs, 806 MHz to 821 MHz
is used for mobile transmit and 851 MHz to 866 MHz is used for mobile
receive, with a 45 MHz offset between the transmit and receive
frequency in each channel pair. In the upper band of 399 channel
pairs, 896 MHz to 901 MHz is used for mobile transmit and 935 MHz to
940 MHz is used for mobile receive with a 39 MHz offset maintained
between transmit and receive in each channel pair.
Each repeater in a trunking system uses only one channel pair to
communicate with each of the mobile units assigned to it. If a mobile
unit is instructed to use a different repeater, another channel pair is
used.
Home repeaters can only exchange data with mobile units that have ID
numbers assigned to that repeater. Other mobile units are ignored by a
repeater unless the mobile unit has received permissions from a
separate repeater to access the first repeater. This is known as a
"Handoff". All repeaters in a trunking system are physically connected
by coax so all repeaters in the community can be informed of accesses
and handoffs.
5-41
08
Mobile units in the trunking system work in a simplex or push-to>talk
manner. Some radios automatically ‘handle, push- to taix and receive
functions in a manner that makes them appear to be duplex in»nature,
yet these units are only half duplex. Mobile units, canjonly hear
messages transmitted through a repeater from mobiles in the ID number
group assigned to that repeater. Likewise, mobile units can only
transmit to other mobiles in the ID number group assigned to the same
home repeater. Through a logic lock-out in the units, only one mobile
at a time is allowed to transmit through a home repeater to other units
assigned to that repeater.
Mobile units can change their ID numbers to either listen or talk to
other mobiles, groups of mobiles or subgroups. These mobile units
change their ID numbers with either manual controls or’ by scanning.
The organization of mobile units is arbitrary and done differently by
different mobile transmitter-receiver companies.
Signaling between mobile units and repeaters occurs at a subaudible 100
Hz frequency and occurs continuously and concurrently with the audio
portion of the transmission. Updates are transmitted every 7-8 seconds
by repeaters to mobile units to keep them informed as to which channel
is available to them or when other mobile units are calling.
5-13-3 Accessing The Trunking System
Before a mobile unit can access the system, a data “handshake” with a
repeater must be accomplished. When the mobile, unit’ s: push-to-talky
pressed, the mobile uses a repeater’s data packet to determine if there
is a free repeater channel available. If there is, that repeater
becomes that mobile unit’s “home” repeater. The mobile transmitter is
enabled and the mobile unit transmits a data message to the repeater
containing the FD code for broadcast, Ine mobile unit then listens, foe
a response from the repeater for the go-ahead to transmit. When this
handshake is received, transmission is enabled. Also, all listening
mobiles with that repeater’s ID number detect their ID, select the
directed channel and unsquelch to receive voice transmission.
A. The Trunking Data Packet
The trunking data packet is a 40-bit word formatted as:
SEAL SIO AO AACR UN icra es Ti Ae ek Re ne ee EEE A Ge ABE ls
SYNC ? AREA! :260TOTR OW? USED) SP HOME 2 PID CODE > FREE nee
SYNC (9 bits): A bit pattern used to initialize the receive Came
circuitry. These bits are compared by the trunking hardware to a
known bit pattern. If the pattern matches, the remaining bits of
the word are checked for acceptance. Patterns used by the
industry at the present time are:
101011000 101010000 001010000
5-42
08
AR RAD CE sbi. t ): Repeater systems in close proximity to others may
use the same channel frequencies. These systems use this area or
intermod bit as an "us-them" comparison for data acceptance.
This) ob tt hs usa ET y2""0'" un Ves's" two systems are in close proximity
to one another.
GOTO CIN USE) CHANNEL. (5 bits): These bits represent either the
repeater being used or the repeater to which a mobile unit is
being transferred for a transmission. These bits must be the
same number Cl thru 20), .as .thatsassigned to. the repedten iior sdata
acceptance in a mobile-to-repeater message. Linu
repeater-to-mobile message, this is the number of the repeater to
be used. The mobile translates this number through a look-up
haoLe into.can FCC channel—pa-ir-.
[NOTE]
AVE3I"” code in this” Tocation indicates “a "turn-off"
code for the end of transmission.
HOME CHANNEL (5 bits): In a mobile-to-repeater data message,
this slot is the home repeater assigned to that mobile for the
current group selection and is used for system accounting. In a
repeater-to-mobile message, this contains the home repeater
number of the mobile making the call, no matter which repeater is
being used--the home repeater or another repeater.
ID CODE (8 BITS): In a mobile-to-repeater message, this slot
contains the ID code (1-250) being used by the mobile unit for
calling the receiver. In a repeater-to-mobile message, the same
PD is reflected so a mobile*cam decide if it needs to unsquelch
its receiver to listen to the voice transmission.
FREE CHANNEL (5 bits): In a repeater-to-mobile message, this
Slot tells a mobile which repeater (1-20) to use when it
transmits. This can be the same number as the home repeater. If
eri repeaters sare busy, this field containsra zero.,¢0)..
indicating "In Use." In a mobile-to-repeater Message.” This
contains @ 31) used to fill* the slot Sinte mobiles’ do not use
Chis tnformation.
CHECK (7 bits): This field contains error check bits that are
derived from all the message after (but not ineludingy the sync.
When the message is sent, a special parity operation is performed
on the data and inserted into these seven bits. A receiver
(mobile or repeater) performs its own computation to produce what
it thinks the check should be. If the two separately derived
check codes do not agree, the message is rejected by the receiver.
5-43
08
B. Repeater Channel Numbers
A mobile radio is programmed with a set of valid repeater numbers
from 1 to 20... An RF. channel. number, 11 s* yas sociated wi tirgedcihy 30 f
these repeater numbers in a mobile radio look-up table. One of
these repeaters is designated the home repeater for the mobile
radio.
For Example:
REPEATER CHANNEL MOBILE RECEIVE MOBILE TRANSMIT
it Sr NUMBER FREQUENCY FREQUENCY*
: 851.9625 806.9625
852.9625 807.9625
e Re 853.9625 808.9625
np te 854.9625 809.9625
13 c 855.9625 810.9625
*These channel numbers and frequencies reflect those used in the
lower Trunking band. For a complete list of channel numbers and
frequencies, see Appendix F.
Given a channel number, the mobile unit can compute the transmit
and receive frequencies according to the following formulae:
Low Frequency Band
Transmit RF
Receive RF
80660125044.6. 025) xotChannel # -19NHZ4
Transmit RF + 45 MHz
I
High Frequency Band
Transmit RF
Receive RF
896.0000.+. (0125) xnEhanne)!: #) 7 MHzZ
Transmit RF + 39 MHz
NOTE
Radios operating in the Low Trunking Frequency Band
within range of Mexico or Canada must employ a
2). 5a kHz ott Set" “as “required by, the FCC:
Repeaters, in turn, are programmed to recognize a set of ID
codes. Any received data stream from mobiles with IDs not in a
repeater’s table are discarded.
5-44
08
or.
Mobile Calling a Free Repeater
The following illustrates a simple repeater/mobile handshake.
THe Die ttransmiussions are formatted “as:
LLLP
ait Coun REA. GO DOs HOME: ID»GODES4 FREE: CHECK! ¢C)
The following illustrates a Handshake sequence:
REPEATER #2 ACTION: MOBILE ID #212
MOBILE SEES FROM THE
TRANSMITS DATA WORD: REPEATER DATA WORD THAT
$:0:2:255:2:C
EVERY 10 SECONDS THE HOME REPEATER CHANNEL
IS FREE
PUSH-TO-TALK SWITCH IS
PRESSED.
MOBILE TRANSMITS DATA WORD:
$:0:2:2:212:31:C
CHECK FOR VALID AREA AND ID
CODE AND CONTINOUSLY IF AREA, HOME AND ID CODE ARE
TRANSMIT THE DATA WORD: OK, THEN TRANSMIT VOICE
$:0:2:2:212:5:C
ALL MOBILES WITH ID CODE #212
UNSQUELCH
RELEASE PUSH-TO-TALK AND
TRANSMIT DATA WORD:
$:0:31:2:212:31:C
REPEATER SEES "31" CODE AND
TRANSMITTS DATA WORD:
$:0:31:2:212:2:C
ALL MOBILES WITH ID CODE #212
SQUELCH
6104001
Figure 5-6 Simple Handshake Sequence
5-45
08
D. Mobile Handoff
When a home repeater is busy, it will instruct a mobile unit to change
its channel to the next free repeater in the system. A handoff will
OCCUrY FNetLNsyManner:
REPEATER #2 ACTION MOBILE ID #91 ACTION REPEATER #5 ACTION
SINCE HOME REPEATER IS BUSY, FREE REPEATER TRANSMITS
IT CONTINUOUSLY TRANSMITS DATA WORD:
DATA WORD: $:0:5:5:255:5:C
$:0:2:2:212:5:C INDICATING IT IS FREE
INDICATING MOBILE #212 IS
USING REPEATER #2 BUT
REPEATER # IS FREE
MOBILE OPERATOR PRESSES
PUSH-TO-TALK AND UNIT
TRANSMITS DATA WORD:
$:0:5:2:91:31:C
REPEATER # RECOGNIZES
REQUEST FROM #91 AND
TRANSMITS DATA WORD:
$:0:5:2:91:1:C
REPEATER #2 SEES ITS NUMBER
IN THE COAX TRANSACTION AND
CONTINUOUSLY TRANSMITS TWO
MESSAGES, FIRST:
$:0:2:2:212:1:C
INDICATING MOBILE #212 IS USING
REPEATER #2 THEN:
$:0:5:2:91:1:C
WHICH TELLS MOBILE #91 TO GO
TO REPEATER #5
MOBILE OPERATOR BEGINS
VOICE TRANSMISSION
MOBILE OPERATOR RELEASES
PUSH-TO-TALK AND TRANSMITS
DATA WORD:
$:0:31:2:91:31:C
REPEATER #5 THEN HANDSHAKES
BY TRANSMITTING DATA WORD:
$:0:31:2:91:5:C
REPEATER #2 CONTINUALLY
IN USE
REPEAT REPEATER REPEAT
MOBILE UNIT REVERTS BACK TO
MONITORING ITS HOME
6104002
Figure 5-7 Handoff Sequence
5-46
08
M/AM-1200S CONNECTORS AND
NDTCATORS: APPLICABLE TO
RUNKING TEST OPERATION:
1 MODULATION METER
6 VAR Tone Level Control
eased 11 téR, Connector
| IR EM/AM-12008 CORDATE “Org a 147 DUPLEXSConnéctor
34 ANT Connector
SJa0, WED
40° SQUELCCH Contre)
ao SG Ee naTcator .Lamp
preure 5-8 FM/AM-1200S Front Panel Controls Applicable
to Trunking Radio Tests
CONTROL SETTING
3 MODULATION Selector Control "FM MID"
4 Modulation METER Control me KHzZ/%x10"
5 VAR Tone Selector Switch Pea iNe Eke]
18 Keyboard As required
22 PWR/OFF/BATT Switch TEWR? Or° “BALE
Peame VERTICAL: Attenuator Selector Control 2 KAZ Pex LO
26 HORIZONTAL Sweep Selector Control LG, ms/ DIY
39 MODE Selector Control GEN
fopie 5-11 FM/AM-1200S Front Panel Controls Applicable
to Trunking Radio Tests
The FM/AM-1200S has three (3) trunking tests operating modes available
2 | [ 4
| | |i [
to it. Each of these modes is entered by pressing: LANcr) | of
After the Trunking Test Mode is accessed, the following message appears
onthe VFD:
By pressing the appropriate number key, the following test modes will
be executed:
1 = Simple Encode/Simple Decode Modes for both mobile units and
repeaters and Repeater Access Test.
2 = Repeater Simulation Mode to test mobile units and handoffs.
3 = Mobile Radio Simulation Mode to test repeaters and handoffs.
(Requires two or more repeaters).
5-47
08
{NOTE}
If the UUT uses the lower band of trunking frequencies
(806 MHz to 866 MHz) procede to the desired tests from
TNT SL PO.
If the UUT uses the upper band of trunking frequencies
PROG 2ND 4 2
=
(896° MHz) to 940 MHz), gor esse =| opt _} | 20ps} . The
following screen appears on the VFD:
The first programming location on the screen:
at
w
flashes on and offs indicating 2tnis 15.-the urece
2
ar (ea ; : .
position. Press: Lawes; . This programming rocatTow now
shows:
wal
IL
ENTER
Press; The desired tests Trunking systems using
the upper frequency band may now be performed.
5-13 =4°° Simple Enc
This mode is used
erly receiving and
lates the encoding
repeater (both can
modes, perform the
Shee
le. ‘Sette EMSA
in Table 5-1
Zig Connect the
For testing
neclor Ct ji.
F'O.T +beSt ing
cor ey sand
For testing
nector (14)
5-48
08
ode/Simple Decode Modes And Repeater Access Test
to determine if a transmitter/receiver UUT is prop-
utilizing a signal from the FM/AM-1200S, which simu-
and decoding processes of either a mobile unit or a
be tested in a similar fashion). To test these
following steps:
PROCEDURE
M-12003 front. panel controls tothe setting,.as, lasted
Li
UUT to the FM/AM-1200S as indicated:
mobile unit Encode.or Decode, connect UUT) to -TYR Gone
repeater Encode, connect UUT receiver to T/R Connec-
UUT transmitter vo 50,-C. Voad.
repeater Decode, connect UUT receiver: to DUPLEX Con-
and UUT transmitter to T/R Connector (€11).
\NOTE}
RF #0 is the mobile Transmit/Receive frequency for
Encode/Decode operations.
Adjust the VAR Tone Level Control (6) for a reading of 800 Hz on
the MODULATION Meter -(C1)-
\NOTE|
If no tone is being generated, enter a 100 Hz tone as
described in section 4-10 of this manual.
pet Mode Selector Control 39). to REC.
paste SOURECH PE Ont ro! T6441). until SIG Indicator -Lamp €42) goes. out.
Simple Encode Mode Test
as Program RF Memory #0 to UUT receive frequency
D. Place the MODE Selector Control (39) to GEN.
PROG 2ND 4
{ ee i c
Ce Press: [wen | | Funct OPT
The following display appears on the VFD:
1
|
di. Press: Luops} . An open programming format for encode appears on
the VFD in the following configuration:
5-49
08
These
programming
bits are:
Area or
Intermod
Bit (1/0)
GOTO or Repeater in use
Channel (1-20 or 31)
Home Channel (1-20)
ID Code (1-255)
Free Channel (1-20 or 31)
6103002
\NOTE}
When testing a repeater, the "Repeater in Use” number
and the "Home Channel" is the same (the repeater
number.) The "Free Channel" number is. "31."
e. Place Programming Template 1 over the FM/AM-1200S front panel.
=). )
es Use the and | keys to move the cursor to the desired
location on the VFD and enter each digit of the data required.
\NOTE}
The fields shown are limited to the maximum values
indicated. If a number higher than
…[truncated]