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MISSILE SYSTEMS DIVISION
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| TEST PROCEDURE
| is ACCEPTANCE
13-164 FM TRANSMITTER LOCKHEED AIRCRAFT CORPORATION | moo9687 B
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PREPARED
SHEET 3 OFg SHEETS
RELEASE
8-19-57
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| THE INFORMATION AND DESIGN DISCLOSED HEREIN WAS ORIGINATED BY AND IS THE PROPERTY OF LOCKHEED AIRCRAFT CORPORATION,
LOCKHFED RESERVES ALL PATENT, PROPRIETARY, DESIGN, MANUFACTURING, REPRODUCTION, USE AND SALES RIGHTS THERETO, AND
TO ANY ARTICLE DISCLOSED THEREIN, EXCEPT TO THE EXTENT RIGHTS ARE EXPRESSLY GRANTED TO OTHERS. THE FOREGOING DOES
MOT APPLY TO VENDOR PROPRIETARY PARTS.
a MRE VISIONS 3 oe.
SYM . I aa OU pescrirvion = Cd For tesy == | FOR DESion
1-15-58 Was ATP 1012 "B" (completely revised) [A Dene Le 84-6
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"AN | Beme58 | Pate Speccquency wes "0,028" 4s "0.010" = |) oy), ae!
| 7. Frequency Deviation & R.F. Power Deviation ¥-20-3%
tests deleted.
An addition to para. 2.5. A change in para.
-9 Added para. 2.10. An addition to para.
-4 Change in para. 5.4.6. Changed para.
.2.2 and added para. 6.2.2.1, 6.2.2.2 and
: e274 and 6.2.9;
| Added "self oscillation" to Data Sheet.
inpe | 6-//- 5G Changed Paragraph 6.2.6
[ sao | sighs Schematic Dwg to Ref. Change in para.
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ACCEPTANCE TEST PROCEDURE Mi foc
13-18) FM TRANSMITTER
Report No.
ae ea I
References 3
Vendor?” MSD Fab. Acceptance Test pec, LO098878
Primary Use: Telemetering Schematic Yiagram 10167)7-B
E.0. 36287 & 48219
1. Insyection Characteristics
1.2 Frequency.
Lo@ Vower output.
d.3 Mod, sensitivity.
Zo Reference Inspection
2.4 Plate Yoltage 250 VOC,
2,2 Filament voltage.
2.3 2nd amplifier plate current 20 MA Max.
2.4 2nd amplifier grid current 2 to & MA Nom,
6) 2.5 Power output 1,7 watts minimung 2 watts maximun.
2.6 Operating frequency + .01% of frequency epecified for tranamitter.
2@of Modulation sensitivity 1.5 te 3.06 RMS for 125 KC deviation.
2.8 Carrier and Seecnd upper sideband rejection 36 DB Min,
ee
2,9 Distortion 2% maximum with a sime wave mod. signal of 1000 cps
a Frag. deviation of 125 KC.
2.10 Total plate current shall not exceed ©5 m..
3. Tset Equipment
| 3.1 NJE power supply 0-8 VOC and 0-300 VDC,
3.2 Test panel 1012,
303 Hewlett Packard 628 counter.
304 Hewlett Packard 330B distortion analyzer.
36 Hewlett Packard 00D volineter,
3.6 Clark receiver EM.
3.7 Hycon oscilloscope
5 3.0 Hewlett Packard 200 CD oscillator
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/ {NAME n, DAtE LOCKHEED AIRCRAFT CORPORATION le | TEMP]
Prepered | puto Geo 957 MISSILE SYSTEMS DIVISION _| Fee | |
| TITLE : oeaee Ss | atest
Chacked . ‘ : a7 ACCEPTANCE TEST PROCEDURE oe
13-18) FM TRANSMITTER
én 3 aa ee ee Report No
3.10 General Radio attenuator.
3.1) Hewlett Packard IdoB Vrw
bh. Test Diagram
pe eee TT |e. |
METER
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5, Prelimin Test Procedure :
5.1 The following is written as a procedure to the technician and is.not
to be verified by Quality Control until stipulated.
5e2 Remove cover and give transmitter a visual inspection for breken wires,
tubes, components, or tuning ae that have been bent tinct
plates to touch each other,
5.3 Check continuity between power plug
PIN ciRncurt RESTSTANCE TO GROUND
A and acs should be 0 ohms
B and should be OO ohms
C and aac should be 2) ohms
D and Inout should be 00 ohms
Sol, Install Lab set resistor (R5). This may be a potentiometer with a
valve of O-LOOK, and lab set vesiater (820) 330 chase.
S.lcl With zero nodulation on input of muitivibrator aac! fi
on, turn B+ to 135 to 1:0 VOC with B+ voltage 4¢ indi
qagt panel Wid.
ame
ey on
5.2 Put input leads of S2).B counter to junction of RO and Rio
The counter should indicate a frequency according to Chart I.
Tf not on frequency, vary potentiometer until counter indi=
cates near the desired frequency, This does not constitute
the final adjustment. It is made after full Bt is applied.
A CLT TG CNET AEE RETNA MES OLN A ALR A ABARAT AT OSS SNA | UTNE PCL ITIL IL LATO EI FRET LILY NL LEGA TN NS LTDA SLRS R ONLI LTE BEN Bs ANT Cah CREAN AS IEE OULG NEE ONEIDA REE OLE DOLL NONE II OS RIS LEE EE NOS RBA BES ISR, NAS ELT SIT SASH ESE TN AN Ps Mea
6.h.3 Put DG probe of )10D on grid (Pin 7) of V5B and vary 12
until a voltage maximum occurs.
spate ERO ON ANRC BEIGE LOLI LDS LALO OE IL
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MAME DATE} TOCKALED AIRORAT Cx | Be
Prepared ‘D. Buxton 8-19-67 MISSILE SYSTEMS DIVISION | | Page
- TITLE .
Checked fo Rees ACCEPTANCE TEST PHOC’DURE
13-18) FM TRANSMITTER
pproved
Soh. Then apply probe of 00 SD to grid (Pin 7) of V6 and vary C15 |
until a voltage maximum occurs. There is no set voltage maxi-
a” mum or minimum that grid should read on any one yaa, but if
| there is 0 or a plus voltage on the grid, it is an indication
that the stage is faulty with exception of Pin 5 on V7 which i
will read approximately 17. i
i
SclinS Put probe on Pin 7 of V8 and adjust Li and Li for a voltage i
tty
maxcimim as indicated en uLOD.
Sei.6 Put proba on Pin 2 of V7 and adjust C29 for a voltage minimum.
Solio? Then vary C38 and observe Bird wattmeter for 1,0 watt output
of trargwititer or mores
5.5 The above paragraphs constitute a preliminary check on transmitter.
They show that the transmitter is working but not calibrated. |
506 For final calibration, turn B+ up to 250 WNC as indicated on test
panel "LOl2",
5.6.1 Set up 5¢)B counter as followsocce
Bobe2 Set "mixing frequency" to apolicable freq. and function switeli
to "mixer" position on 5258. {
50603 Set function selector to “frequency” position and "gain® con-
S|
trol knob is adjusted until tunin @ eye just closes,
oOo Turn frequency until selector knob to "1" position and "man
gare” to open.
55005 "Std, frequency Ctd" switch is set te LOO KC position and
RLCO KC STD" to "int",
5.6.60 Put probe c of 524B to junetion of R27 and R8 and adjust pot
R5 until a frequency according to Chart I is read +1%,
CHART I
Multivibrator Frequency for output frequency of transmitter of f
225 MC is 1.200 MC
229 MC is 1.),00 MC a)
233 MC is 1.400 MC }
5.6.7 Tune clark receiver until dis:
"QO and signal level meter indik
This indicates receiver earri
or microammeter indicates
; “es at ics 7} F
“maximum signellev
ney tuning is
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THLE J
ACCEPTANCE TEST PROCEDURE |_Mode
13018); FM TRANSMITTER .
41 ive fe ea oiaaial ae meamecerarh a opert Now
S567 51 Adjust attenuator until a reference level 100
at ee cata
is indicated on signal level meter on Clark receiver,
Connect Counter 52)8 to output of transmitter, ‘fhe output
frequency unmodulated shall be (02% of center frequency as
specified on work orders, if frequency is not according te
work order, vary R5 Pot until complied with.
Apply 1000 CPS modulation to input of multivibrator with
Hewlett Packard 200 oscillator.
5.6.9.1 The FMS value of the modulating voltage shall not
be less then 1.5 VRMS or more than 3.0 VRMS for a
frequency deviation of L25KC. Peak voltazes
are 2,22V and .2uV respectively for 1.5 VRE and
3 VRMS as measured from input to ground.
5.6.9.2 The frequency deviation will be proportional to the
voltage output of the Clark raceiver as read on the
200 CD voltmeter, This output voltage in RMS value
has been calibrated according to the individual
gain of the receiver and is printed on calibratio
stamp on the panel of the receiver, The receiver
ny lab
ek
shall. be calibrated for the above eonetion
standards group (Orville donnseon).
5.7 Tune up transmitier by the methodical adjus
alga gtd and capacitors (L2, Cis, Ly, Li.
cape ORS Qrrtpur should then exceed 1.7 wat.
US a
Tee
quency indicator reads
225 MC = transmitter ts 22308 MC
227.5 MC 226,06 MC
229 MC " # 6230.5 MC
233 Mo 2 " 23h05 Me
5.702 Note reading on attenuator and subtract
It should be 30 DB difference or mors.
until & VELUa of 36 DB 13 & hiait 4 tera te} 1th
Sofol Tune Glark receiver to transmitter cutput frequency an
attenuator until signal, level meter reads 100 and center
“OF end then nete reading on ettenustor.
Tune receiver to carrier frequency of t:
Re, peng . oO % B gress
ansmiteer which for
and adjust attenuator. until signal level’ meter reads 100,
from previ reading .
if not, adjust CLS
no change in ontovt
+o
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| | NAME DATE | | LOCKHEED AIRCRAFT CORPORATION L 6 | Teme.) PERM]
Prepared [D. Buxton = _(6~19-57 MISSILE SYSTEMS DIVISION
Checked
6.2 B+ shell be 250 VOC after a ten minute warmup.
FORM MSD ac
Connect as per test diagram.
6.224
6.
Lok
TITLE
ACCEPTANCE TEST PROCEDURE
13-18% FM TRANSMITTER
Pune receiver to 2aG upper sidehend which for
225 MO transmitter is 226.2 Me
227.5 MC " 229.0 XC
229 MC ne " 236.4 ME
233 KC iy " 234.5 ° Ma
emi gijust ettenustor for a reading of 100 on receiver signal
level. meter. Note reading on attenuator and subtract this
walve from the reading obtained from transmitters’ first upper
sideband or center frequency. This valve should exceed 30 BB
aS read on attenuator.
if this number is less than 20 DB, readjust Li and 1 for
tinimim reading on signal level meter without decreasing vatt-
meter reading.
Replace cover and retwune for maximum output on Bird wattmeter.
Connect distortion meter to demodulated output of receiver.
The distortion shovld not exceed 2%.
sxaph be verified by Quality Control.
Filament voltage shall be 6.3 volts.
The following walves are reaé. from the 1022 test panel indications
with the transmitter output exceeding 1.7 watts as indicated on the
Bird-vatimeter.
6.2.2.1 The owtput plete current shall not exeeed 20 MA.( IP it
does exceed 20 MA increase the yalue of the lab set
resistor R20).
6.2.2.2 The grid eurrent shell not exceed 8 MA.
6.2.2.3 The total transmitter plete current shall not exceed 95 MA.
Read the output frequency on $248 counter. This frequency shell
be + .01% of frequency specified on work order for transmitter.
The nodiletion sensitivity sheil be read directly from the
1000 CPS output of the receiver on a 800 CD voltmeter. The
frequency swing is proportionel to the output amplitude as read.
on the 400 CD. The receiver is calibrated for this frequency
deviation and the data is recoréed on the front panel. For
instance, a deviation of 125 KC is proportional to an output of
87 volts RMS on Clark receiver.
; DATE ~~ LOCKHEED AIRGRAET CORPORATION |
| Prepered | D- Buxton 8-19-57 MISSILE SYSTEMS DIVISION
- TITLE
Checked ACCEPTANCE TEST PROCEDURE
Approved
6.2.5
6.2.9
Read and. record the BB of rejection to the carrier ami 2nd
wpper sideband. @he first upper sideband shall be 30 db above
carrier ani 2nd woper sideband.
Changing the input Prequency from 80 CPS to 80 KCPS shall not
ebange the output voltage as read on hOOD voltmeter more than
+ 3 58. Reeord this information.
Check distortion using the 3308 at 10CO CPS modulation and
125 KC deviation. This value shall be less than 2%.
Tarn B + down to 225 VDC and filament voltage to 5.7 volts.
Measure output frequency, output power anid modulation sensitivity.
The limits appeer on Manifecturing Test Data Form. The distortion
under reduced voltages shall not exeeed 34%.
Cheek for self oscillation by removing or shorting ow! the erystal
(¥1). There shall be 0 power output for non oseillation.
VIBRAR LON
With an amplitude of 10g's peak or displacement of 0.1. inch, whichever is
less, aver the frequency range from 20 eps to 2000 eps, two (2) tests shall
be made. The sweep time of these individual tests shall not exceed two (2)
minutes 3
WETH MODULATION
Modulation sensitivity shall not change by more than 104,
that is, with 125 KC of deviation, the output voltage from
the Clark receiver shall not chenge by wore than 10%.
This completes test for transmitter ....
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Prevared | D, Buxton Sa Go5' MISSILE SYSTEMS DIVISION | Page
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§ THLE -
Chraked eee ACCEPTANCE TEST PROCEDURE | Medel =
13-16), FM TRANSMITTER
| Approved . . Report No.
vA eo 5703 |
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L, ist Mixer Plate Cys Quad. Plate 7
Lo Xtal Oscillator Piate Adjustable Co, end Mixer Flaten te
Iy, 2nd Mixer Supressor Grid Cog ist Amp Plate — Adjustable
Quad Plate Gaz 2nd Amp, Cathode
Le .@nd Mixer Plate G3g 2nd Amp, Plate
Lg lst Amp Plate Fixed
Ly end Amp Gathode
Lp end Ampt Plate
Lig Rmntr Output
SOLED EBA SURES
PAPI ERY
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MISSILE SYSTEMS DIVISION
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TILE
>
13218) FM TRANSMITTER
This illustration describes 2 method for gaining more control over the tuning
frequencics “é¥ gain characteristics of an RF amplifier, If the occasion
arises that a transmitter’s maximum output ig low or below 1.7 watts, one of
the methods of bringing it up is by spreading or compressing the cotls, This
in effect changes the resonant “requency of the stage thereby increasing ov
detreasing the gain,
Ons of the indications when the transmitters! maximum output is lower than
1.7 watts, is a tuning capacitor that is completely unmeshed (as pictured
on illustration I) and therefore does not give complete control over the
resonant frequency or gain of the unit.
The remedy for this trouble is spreading the associated coil tums until c
acitor is completely meshed, the remedy is to squeeze the turns on the assc
ciated coil until the capacitor is about half meshed and Stage gain is maxi.
mum as pictured on illustration 2,
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ACCEPTANCE TEST PROCEDURE Bear :
4
acitor is about half meshed and gain of stage ig maximum. Conversely, if cap-
PETAL ILM TET PTS Te 2 a EE POS ae Oe
LE A SNR ILLES SILL SERENADE EPID OLLEL ECS SEE AERO D EE NAR E I REL ON EOE BEE TAG ELD CLE IOLA RENE ONE ORTE E
PP Ven Kove
Plate Volts
one So ane SE SBE MU OLE IRE ATLAS
CCEPTANCE
TESTE PROCEDUAY:
> M009887B
Sheet 10
~ 7 PROJECT :
Filament Volta
2nd. Amplifier Plate Current
2nd Amplifier Grid Current &
R. F. Power 1.7 Watts
Center Frequency ! -0.01% cf *
8 ma.
a watts
nant
“40.01% of *
ALEC INNS rm
Modulation Sensitivity [ 1.5 Vrms
Rejection to Carrier | 30 db~
None
Rejection to 20d Upper [30 db”
Rone
+3 db
Response: Maxiwam Devietion -3 db :
Filament Volts fi S-7 y a
Plate Volts 2235 ge “355 We
R.F. Power | 60% of 46
Center Frequency -0.01% of * | | 20.01% of *
—— -O1f of of FT +.01% of #7
RRS a ERED Bh Sa IN, 1 RN Re er Mtr a CMI MENU RPE IES ANE GA) aA FT URE ATE EN ri Rn me OM ee
Modulation Sensitivity L. 5 .5 Vrms | 120% of #8
NAILIN PBN ERS RE IE AE ULI IEE LE ATID SIN MS AA AI Ie
PE ANP IE NOLO RS ONC A RRA RPA IE OM AR SCE YP NODES RE ERS OR TREN NE NC RR RN SE.
Self Oscillation she 0 watts i‘ 0 vetts
;
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5A anon
ENVIRONMENTAL
AACN Ne CAL EASE OMRON A MRA NEI YSHNI AA NALS KHERIOINAS NON pA ABR LEMALETIL
Axis of Vibration
_WiTH MODULATION
Modulation Sensitivity
Deviation at Receiver
“on a ae a Sa at z “ic HOF 15
Eo a ae a IN ON eG NM Re NY NE NR TNA So RE NEES MDB AI LAN? RD to ED TEE ERO es Rees
* Carrier Frequency listed on W.C. or Vehicle Instrumentation Schedule
ENSPECTOR : APPROVED: DATE:
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