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ROHDE&SCHWARZ
) Test and Measurement
Division
Operating Manual
| SIGNAL GENERATOR
AM/FM/PHIM
SMYO1
9 kHz - 1040 MHz
1062.5502.11
SMYO2
9 kHz - 2080 MHz
1062.5502.12
Printed in the Federal
Republic of Germany
1062.5583.12- 03 - 1
Digitized by the Internet Archive
in 2025
https://archive.org/details/manualsplus 05010
Certified Quality System
ISO 9001
DAS REG. NO 1954-02
Qualitätszertifikat
Sehr geehrter Kunde,
Sie haben sich für den Kauf eines
Rohde & Schwarz-Produktes ent-
schieden. Hiermit erhalten Sie ein
nach modernsten Fertigungsme-
thoden hergestelltes Produkt. Es
wurde nach den Regeln unseres
Qualitätsmanagementsystems
entwickelt, gefertigt und geprüft.
Das Rohde & Schwarz-Qualitäts-
managementsystem ist nach ISO
9001 zertifiziert.
Certificate of quality
Dear Customer,
You have decided to buy a
Rohde & Schwarz product. You
are thus assured of receiving a
product that is manufactured
using the most modern methods
available. This product was de-
veloped, manufactured апа
tested in compliance with our
quality management system stan-
dards.
The Rohde & Schwarz quality
management system is certified
according to ISO 9001.
$
ROHDE&SCHWARZ
Certificat de qualité
Cher client,
Vous avez choisi d'acheter un
produit Rohde & Schwarz. Vous
disposez donc d'un produit fabri-
qué d'aprés les méthodes les plus
avancées. Le développement, la
fabrication et les tests respectent
nos normes de gestion qualité.
Le systéme de gestion qualité de
Rohde & Schwarz a été homolo-
gué conformément à la norme
ISO 9001.
R&S international Telephone
Telefax
Telex
Greece Mercury Ltd. (1) 7210241
6, Loukianou Str. (1) 3645885
GR-10675 Athens 221695 (spa gr)
Guatemala see Central America
Honduras see Central America
Hongkong Schmidt 2 Co. (HK) Ltd (2) 5070222
18/Fl., Great Eagle Centre (2) 8275656
23 Harbour Rd., P. O. B. 297 76762 (schmc hx)
Wanchal, Hongkong
Hungary ROHDE & SCHWARZ (1) 2030282
Budapesti Iroda (1) 2030282
Etele út 68 =
Н-1115 Budapest
India ROHDE & SCHWARZ (11) 4615285/4692238
Liaison Office India (11) 4626324
A-382 Defence Colony 3162268 (rsbd in)
New Delhi 110024
Indonesia P. T. Dian Graha Elektrika (21) 8306560
Mustika Ratu Center, 3rd Floor (21) 8307403/04
Jl. Gatot Subroto Kav. 74-75 48661 (dgejkt ia)
Jakarta Selatan
iran ROHDE & SCHWARZ IRAN (21) 625478/8860282
Liaison Office Tehran (21) 8860283
Dr. Beheschty Avenue 212742 (rusi ir)
Tehran 15317
ireland see United Kingdom
Italy ROHDE & SCHWARZ ITALIA S.p.A. (6) 4110011
Via Tiburtina 1182 (6) 4110414
1-00156 Roma 621545 (rojrom i)
Via Roma 108 (2) 95302828
1-20060 Cassina de' Pecchi (MI) (2) 95302772
353462 (rt tel i)
Japan ADVANTEST Corp. (3) 33427500
Shinjuku-NS Building (3) 33420905
4.1, Nishi Shinjuku 2324914 (advan j)
2-chome, Shinjuku-ku
Tokyo 163
Kenya GES Engsales (K) Ltd. (2) 441209/448814
P.O.B. 46658 (2) 448815
Nairobi -
Luxembourg see Belgium
Malaysia Dagang Teknik Sdn. Bhd. (3) 7035503
No. 9, Jalan SS 4D/2 (3) 7033439
Taman People's Park -
47400 Petaling Jaya
Malta ITEC - International Technology Ltd. (356) 374300/374329
B'Kara Road (356) 374353
San Gwann 1031 (reho mw)
Mexico Electroingenieriea de Precision (5) 5597677
Uxmal 520, Col. Vertiz Narvarte (5) 5753381
Apartado 44-088 1764433 (epsa me)
03100 Mexico DF
Nepal Abishek Trade Links (P) Ltd. (1) 411246
P.O.B. 1544 (1) 414658
Kathmandu 2619 (wind np)
Netherlands ROHDE & SCHWARZ NEDERLAND B.V. (3402) 40900
Perkinsbaan 1 (NL-3439 ND Nieuwegein) (3402) 48122
Postbus 1315
NL-3430 BH Nieuwegein
70339 (rsned nl)
New Zealand Communication Instruments Ltd.
47 Kenepuru Drive
P.O.B. 51140
Tawa Wellington
(4) 2379199
(4) 2379195
Nicaragua see Central America
Norway ROHDE & SCHWARZ NORGE (22) 658020
Østensjøveien 36, Postboks 103 Bryn (22) 658021
N-0611 Oslo -
Pakistan Telec, Electronics & Machinery (Pvt.) Ltd. (21) 5683988
415, Mahboob Chambers (21) 5680908
Abdullah Haroon Rd. 20690 (elco pk)
P.O.B. 7430
Saddar-Karachi 0301
Panama see Central America
Philippines Marcom Industrial Equipment, Inc. (2) 8170507
MCC P.O.B. 1110 (2) 8105807
Eurovilla | Condominium 45930 (marco pm)
142 Legaspi St. Corner Herrera
Legaspi Village
Makati, Metro Manila
Poland ROHDE & SCHWARZ (2) 6350687/6353615
Oddzial w Warszawie (2) 6353544
ul. Stawki 2, Pietro 28 -
PL-00-193 Warszawa
Portugal TELERUS - (11) 4120131
Sistemas de Telecommunicagöes, SA (11) 4120172
Rua General Ferreira Martins, № 6 -2° В -
Algés-Miraflores )
Р-1496 Lisboa
Romania ROHDE & SCHWARZ Representation Office (1) 6316878
Str. Uranus 98, Sc. 2, Et. 5, Ap. 36 (1) 3122013
RO-76102 Bucuresti, Sector 5 -
Russian ROHDE & SCHWARZ Moscow Office (095) 9549066
Federation UI. Dubiniskaja, 98 (095) 9549087
RUS-113093 Moscow 413330 (siem su)
Saudi Arabia ROHDE & SCHWARZ 14656428 Ext. 229
International GmbH 14656428 Ext. 229
Liaison Office Riyadh -
c/o Haji Abdullah Alireza Co. Ltd.
Р.О.Вох 361
Біуасіһ 11411
Singapore Infotel Technologies Ltd. 2876822
19 Tai Seng Drive 2876577
Slovak Republic
Slovenia
South Africa
Spain
Sri Lanka
Sweden
Switzerland
Taiwan
Thailand
Turkey
United
Kingdom
USA
Vietnam
For areas
not listed
contact:
Kinergy Building # 06-00
Singapore 1953
38360 (inftel rs)
see Czech Republic
ROHDE & SCHWARZ Repr. Ljubljana (61) 1234651
Koprska 92 (61) 1234611
SLO-61000 Ljubljana -
S.A. Electro-Medical (Pty) Ltd. (12) 8041620
115 Siersteen Road (12) 8042009
Silvertondale P.O.B. 1784 320756 (saem sa)
Pretoria 0001
REMA Leo Haag S.A. (1) 3839017
Avenida de Burgos, 12 (1) 7662773
E-28036 Madrid 42838 (rema e)
Lanka Avionics Mattumagala (1) 530624
658/1/1, Negombo Road, (1) 538311
Ragama 21494 (global ce)
ROHDE & SCHWARZ SVERIGE AB (8) 6836700
Flygfáltsgatan 15 (8) 941978
5-12830 Skarpnáck -
Roschi Télécommunication AG (31) 9221522
Papiermühlestrasse 145, Postfach (31) 9218101
CH-3063 Ittigen 911759 (ragbe ch)
Function Enterprise Co. Ltd. (2) 7016899
P.O.B. 36-430 (2) 7017068
SF, No. 97, Tun-Hwa South Rd., Sec. 2 25172 (function tw)
Taipei
UCOM Ltd. 271-4060
10/26 Phahonyothin Rd., Soi 5, Phayathai 271-4112
Bankok 10400 -
ROHDE & SCHWARZ (216) 3851917
Istanbul Irtibat Bürosu (216) 3851918
Bagdad Cad. 191/3, Arda. Apt. -
TR-81030 Selamicesme-Istanbul
ROHDE & SCHWARZ Liaison Office (312) 4405183
Kumkapi Sokak 35/1 (312) 4406533
06610 Gaziosmanpasa-Ankara i -
ROHDE & SCHWARZ UK Ltd. (252) 811377
Ancells Business Park (252) 811447
GB-Fleet, Hampshire GU 13 8UZ 859880 (rsukco g)
ROHDE & SCHWARZ, INC. (301) 4598800
4425 Nicole Drive
(301) 4592810
Lanham, MD 20706 =
TEKTRONIX, INC. (503) 627-6204
P.O.B. 500 (503) 627-3721
Beaverton, OR 97077 =
Schmidt Vietnam & Co. Ltd.
P.O.B. 89 International Post Office
Hanoi
(4) 346186
(4) 346188
ROHDE & SCHWARZ GmbH & Co.KG Division 5Z
Postfach 80 14 69
D-81614 München
Telefax Int. + (49 89) 412931 15
Safety Instructions
This unit has been designed and tested according to the standards outlined overleaf and has left the
manufacturer's premises in a state fully complying with the safety standards.
In order to maintain this state and to ensure safe operation, observe the following instructions,
symbols and precautions.
1)
2)
3)
4)
5)
6)
7)
When the unit is to be permanently cabled, first connect protective ground conductor before
making any other connections.
Built-in units should only be operated when properly fitted into the system.
For permanently cabled units without built-in fuses, automatic switches or similar protective
facilities, the AC supply line shall be fitted with fuses rated to the units.
Before switching on the unit ensure that the operating voltage set at the unit matches the line
voltage.
If a different operating voltage is to be set, use a fuse with appropriate rating.
Units of protection class | with disconnectible AC supply cable and plug may only be operated
from a power socket with protective ground contact.
The protective ground connection should not be made ineffective by an extension cable.
Any breaking of the protective ground conductor within or outside of the unit or loosening of
the protective ground connection may cause the unit to become electrically hazardous.
The protective ground conductor shall not be interrupted intentionally.
Before opening the unit, isolate it from the AC supply.
Adjustment and replacement of parts as well as maintenance and repair should be carried out
only by specialists approved by R & S.
Observe safety regulations and rules for the prevention of accidents.
Use only original parts for replacing parts relevant to safety (e.g. power on/off switches, power
transformers or fuses).
Also observe the additional safety instructions specified in this manual.
Explanation of Symbols Used
- Read operating manual, observe the safety symbols used
AN - Caution, shock hazard
D
n - Unit ground
Ab
- Protective ground connection
- Equipotential (floating ground)
- Ground
1062.5502.11 51 E1
Contents
2.10
2.11
2.12
2.13
2.14
2.15
2.16
217
2.18
2.19
2.20
2.21
2.22
2.23
2.24
2.25
Data Sheet
Page
Preparation for Use
PuüttinginmtojOperatio Lee e eee dT MR 1.1
POWORSUDDIVIPOWOT:EUSOS 6. ccssecsscsecesenvessecssnccacsccosvedvesned rasan na dse oosa ыты йы oesters iiaei 1.1
MOUNTING into a 19: Наск метов лист не OOOO CREER... 1.1
ОРЦОПӘМҮЗБІ A nmn NR ISR: ament A 1.2
Manual Operation
ELONLANE RER VIOWS НМ СС Sene 2.2
Patlern SeiNGIfOLEIrSL USOFS................ aan OOOO A 2.4
Basic Operation E OE AE OO e A A A 2.4
BOWET-ON Statis eee T E E A A 2.9
Internal/External Reference Frequency .......................2..2............. 2.9
Егеачепсу (НЕ) К И н и н н А н ea А tae eso Mac de epi or Ceu Te 2.10
FEVER E A OEE ны ++. 2.10
Non-Interrupting Level Setting .....................2.....2......4..2..2.2 2. nassos 2.11
Level'Gontro Without Function serere eeennonbohanssersnsaonennsunnunsenanne 2.11
Level EME et IT string ¿PRL 2.12
Internal AF Modulation Frequency ....................222..4.....2..4............7...2 nas 2.12
Modulation, АМ ааа ee e tek ene eT Ee ee ЮП re ee Sedes ee e EE PEDE .......... 2.13
РИМ КІМДІ алы 2.15
Modulation; ЕМ ее costae foni e done Me Аалы ы аға ТЫ нае 2.15
Modulation, ФМ A A A A 2.17
Моашапоп EXtemal SOUTCO CEEOL CEO 2.18
MOJO O WO OO услу EE ооо и ОИ 2.18
Variatlon Rotary Кпор улы ыен T 2.19
Бого Носа еее. 2.20
UY D eee UD ООС ЕЕЕ 2.21
Special EUNCUONS A саана те тенеа і 2.22
SAN enormen Nit im enmt cbe ER 2.25
Areta Bu AERIS 2.25
instrument Рене e 2.28
RETTEN АТТ Сн та ене MEET eio cm 2.29
1062.5583.12 3 E-3
3.31
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.3.8
3.3.9
3.4.1
3.4.2
Remote Control of Instrument via IEC Bus
Brief Instructions for Simple Аррісайопв......................................... 1. өл лл əл лл лы. 3.1
EIDUUnPRRGDSOu CN. | cc———M 3.1
Device Messages gm———————O—————————————P( 3.2
Device-specific Setting Commands ————M: 3.2
Device-specific Data Request Commands and Messages Sent by the 5МҮ................... 3.6
Common, Device-independent Setting Соттапа........................................................ 3.9
Common, Device-independent Data Request Соттаті............................................ 3.10
DEE осло ce potete К POE ске date se ee ER NE EN TERRI TET АТС denen 3.11
Syntax of Setting Commands and Data Request Commands
(Programming Messages) ее 3.12
Data Request and Syntax of the Messages Sent by the SMY to the Controller
(Response Мөѕзадеѕ). оолады pee IR eta Re E у ы: 3.15
Alternative Commands and Мо!а!юп5..............................з..зезееееззеневивеввевев ве ea da save sauce ore 3.17
Multiple Settings ar... a... зс eoe еа 3.17
Interface Messages ане Ык ИИО SS as NER SET TRU 42556 SERE SENS NE Y 3.19
Universal Commands ДАЛЫ erue A O 3.19
Addressed Commands:.....2.... 12.2.2. ыы Лл Са аз АЛТЫ А 3.19
Service Request and Status Register ..........................................2.22Ҙ2... 3.21
Command Processing Sequence and Synchronization .......................................... 3.26
Error Handling 2302 аии с сс ы; 3.27
Resetting Device FUNCIONS ооа тестен ers 3.28
Local/Remote SwitchoVver а ЕЕ ОЕК 3.28
Interface Function... онен оа ненае сае сорсо нс 3.29
IEC-Bus Connector and Bus Гіпев......................2.2...................о. 3.30
Maintenance and Troubleshooting
Maintenance... 0S2 E SO 4.1
Cleaning the Exterior of the Instrument..............ooooooccccooccccconoooncconocoooaccnnnonanonanonnncnnnnanons 4.1
Storage 55 аа н ы и rae O Кы РА 4.1
Replacing the Lithium Battery: ra on ТА ER 4.1
Function Спеск(бейМевіу)зг 00000 ne але 4.2
Solf-test E ПЕ ИН е 4.2
Calibration A oa АНАНЫ с суы лу о ШТ 42
Testing the Rated Specifications
Required Measuring Equipment and Ассеѕѕогіеѕ..................................................... 5.1
Test Procedure 2...0 Se сын ерлан Лл ы ы. 5.2
Display апа Keyboard 525552 пы RISO EIE LE 5.2
Frequency Setting. A о ЛЫСЫ ИЕ 5.2
Reference Frequency У и 5.3
1062.5583.12 4 E-3
Settling Time ее аса ае cuc Б.З
Ори Level ны 5.4
Акепцалоп зерттеле ИСА ЫР КЫ A 5.4
Non-interrupüingd Lever Setting И оаа 5.5
Output. Reflection Coefficient o es ЛО Paste rre ашы ДЫЛЫ 5.5
ох 5.6
Spurious texere гоа пиона A O ОИ O aa aC 5.7
SSB.Phase Мо. 57
Broadband'Noise cmo mer MEME О СЫ ОЛ RRA 5.9
Residual ее. 5.9
Modulatior Generator с ккк ЛЛ ЛЫ Е A A 5.10
Function Test of the External Modulation Level Monitoring .......................................... 5.10
AM Modutalion DEDIR. eer cece coe ИИ S 5.10
AM Distortion: екн лла АН; ал клас Тат E нун 5.11
АМ-Егециепсу Response ее. 5.11
АМ 5.11
Residual АМ еее ebd у RAE ыр зис 5.11
NC eM. aU анны 5.12
FMiDeviation бепо ec тт ы ПЕ ree лк... ыллыан. 5.12
ЕМ В 5.12
EM Frequency Response A ЕТ ХОМС O O 5.12
incidental AM SU д, ыс ин математи наста EE EE октан ана сата TEE 5.13
Stereo МОБ 513
РМ Deviation Setting ЕЕ ры с ЛА ҒҰН... 5.13
PM Distortion? ОК EU le ТЫ ҚЫЛА ЫНА 5.13
PM.ETeQuencypResponse c E REI SS 5.14
Overvoltlage Protection re AERA IE Eee EDD IERI IPEA NET PRENNE Ten 5.14
Performance Test Report еее e tere ron nee ann ee Fata te mne вовне es 5.15
уо Step A uestre queen qug nt e ER 1.1
1062.5583.12 5 E-3
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PARAMETER [TIR
9 kHz to 1040/2080 MHz _
Signal Generator SMY
The Signal Generator SMY from
Rohde&Schwarz is a costeffective
instrument for testing AM, FM and ФМ
receivers and for component measure-
ments. SMY comes in two models:
SMY O1 for 9 kHz to 1040 MHz and
SMY 02 for 9 kHz to 2080 MHz.
Designed exclusively for the main
applications of signal generators by
cutting out the unnecessaries, SMY fea-
tures an outstanding price/perform-
ance ratio. Thanks to its comprehen-
sive basic features and excellent signal
characteristics, it is an economical
solution for universal use in lab, pro-
duction and servicing environments.
* Frequency resolution 1 Hz
* level range -140 to +13 dBm,
overrange up to 19 dBm
* level accuracy better than 1 dB
• SSB phase noise <-114 dB at
1 GHz, Af = 20 kHz
Versatility and low cost can go hand in hand
e AM, FM, ФМ and pulse modulation
* Modulation generator 1 Hz to
500 kHz
* Nonvolatile memory for 50 com-
plete front-panel setups
е Remote-control interface IEC625/
IEEE488
е RF overload protection 30 W
(SMY O1) or 50 W (SMY O2)
e Low RF leakage («0.1 uV)
* Calibration at 3-year interval
ROHDE & SCHWARZ
SMY - the ideal generator for receiver measurements. ..
e level range -140 dBm to +13 dBm
(19 dBm overrange) sufficient even
for receivers of highest sensitivity
)
AMPLITUDE
MEMORY PARAMETER ON/OFF DATA ENTER/UI
ROHDE&SCHWARZ SIGNAL GENERATOR (kHz . 1040682) (SMY 01
е High level accuracy and low RF
leakage allowing accurate and
undegraded sensitivity measure-
ments
е FM-DC with high accuracy of car-
STO INT/ON
rier frequency for testing pagers \ С т =
and receivers fitted with digital | а-а. EXT AC
squelches N REMOTE
LOC/IEC ADD (C srATUS
* Low 55В phase noise and high spu-
rious rejection for all in-channel and ONES
PRESET © spec
blocking measurements
e Low residual FM affording ample of
margin for S/N measurements
е Modulation generator 1 Hz to
500 kHz for modulation frequency
response measurements
* Stereo channel separation of 50 dB
and low harmonic distortion for test-
Nb cci ...and for general-purpose applications
on-interrupting level setting over a
range of 20 dB for reproducible
measurement of squelch hysteresis
* Frequency resolution 1 Hz, suitable
also for extremely narrowband test
items
e FM-DC, deviation up to 20 MHz for
VCO simulation
* FM bandwidth 2 MHz for fast FSK
and telemetry applications
* High output level up to 19 dBm for
component and overdrive testing
® AF synthesizer 1 Hz to 500 kHz,
separate use as AF signal source
possible for external applications,
eg recording of AF frequency
response
е Remote-control interface IEC625/
IEEE 488 for use in automatic test sys-
tems
e Sequence function and SEQ input for
semi-automatic use
Thanks to the excellent spectral purity and the high ac
tal filters are possible without any problem. Here SMY
2 Signal Generator SMY
Specifications
Frequency
Range
Underranging without specification
9 kHz to 1.04 GHz (5МҮ01)
9 kHz to 2.08 GHz (SMYO2)
down to 5 kHz
Resolution 1 Hz
Setting time (to within
1 x 107 for f>65 MHz
or «70 Hz for f «65 MHz) <60 ms
Reference frequency standard option SMY-B1
Aging (after 30 days of
operation) 1 x 10%/уеаг «1 x 107?/day
Temperature effect
(0 to 55°C) 2х 10% <5 x 10:9
Warmup time - 10 тіп
Output for internal reference
Frequency 10 MHz
Level (EMF, sinewave) leen
Source impedance 500
Input for external reference
Frequency 5 ог 10 MHz +5 x 10-6
Input level (2102 Vins
Input impedance 2000
Spectral purity
Spurious
Harmonics <-30 dBc for levels «10 dBm
Subharmonics
{<1.04 GHz none
£51.04 GHz (SMY02) <-40 «Вс
Nonharmonics at >5 kHz
from carrier
f<1.04 GHz <-70 dBc
£31.04 GHz (SMYO2) <-64 «Вс
Broadband noise with CW!),
carrier offset >1 MHz,
1 Hz bandwidth
f= 11065 MHz <-135 аВс
{>65 MHz <-140 аВс
SSB phase noise at 20 kHz
from carrier, 1 Hz bandwidth, СУУ
f<65 MHz <-114 dBc
100 MHz <-132 dBc
500 MHz <-120 dBc
1 GHz <-114 dBc
ois ENS TEE SEE PRU
-70 ав FX | = ---- —
ee ва
-98 аве : н E : r - : н : :
100 dBc : SS
-110 ano AE
-120 аво A س -
eS d :
-130 аво r DUX T н "
-140 dBo 5. т т
-160 авс :
df/Hz 100 ік 2k Sk 10k 100k 1м 10m
SSB phase noise at 1 GHz (СУУ)
Residual FM, rms, <1% of
maximum deviation,
f= 1 GHz
0.3 to 3 kHz (ССІТТ) <10 Hz
0.03 to 20 kHz <20 Hz
Residual AM, rms (0.03 to 20 ЕН2)!! <0.02%
Level
Range -140 to +13 dBm
Overranging without specification up to 19 dBm
Resolution 0.1 dB
Total error for levels >-127 dBm!)
f<1.04 GHz <+1 dB
f>1.04 GHz <+1.5 dB
Level flatness at О dBm!) <1 dB, typ. «0.3 dB
Output impedance 500
VSWR!)
Setting time (IEC/IEEE bus)
Non-interrupting level setting
(ATTENUATOR MODE FIXED)
Setting range
Overload proctection
Max. permissible RF power
SMY 01
SMY 02
Max. permissible DC voltage
Max. pulse loading capacity
(pulse width «10 us)
Simultaneous modulation
Amplitude modulation
Modes
Modulation depth
Resolution
Setting error at 1 kHz (m <80%)!)
AM distortion at 1 kHz!)
т = 30%
т = 80%
Modulation frequency response
flatness (m = 60%) 3)
30 Hz (DC) to 10 kHz
10 Hz (DC) to 50 kHz
Incidental ФМ with AM (30%),
AF = 1 kHz
Modulation input (AM EXT)
Input impedance
Input voltage for selected
modulation depth
Frequency modulation
Modes
Maximum deviation for
carrier frequency
«65 MHz
65 to 130 MHz
130 to 260 MHz
260 to 520 MHz
520 to 1040 MHz
1040 to 2080 MHz
Resolution
Setting error at AF = 1 kHz
FM distortion at АЁ = 1 kHz
and 326 of maximum deviation
Modulation frequency response
flatness
10 Hz (DC) to 2 MHz
Incidental АМ at AF = 1 kHz,
Ғ>1 MHz, 40 kHz deviation
Stereo modulation at 40 kHz
deviation, AF = 1 kHz
Stereo separation
S/N ratio
unweighted
weighted
Harmonic distortion
Carrier frequency offset
with FM-DC4)
Modulation input
Input impedance
Input voltage for selected
deviation
Phase modulation
Modes
Maximum deviation for
carrier frequency
«65 MHz
65 to 130 MHz
130 to 260 MHz
260 to 520 MHz
520 to 1040 MHz
1040 to 2080 MHz
<1.5 forf<1.04 GHz
«1.8 for f>1.04 GHz
<25 ms (<10 ms with electronic level
setting)
O to -20 dB
protects the instrument against exter-
nally applied (50-Q source) RF power
and DC voltage
30 W
50 W
35 V
1 mWs or 150 Vp
any combination of AM, FM (ФМ) and
pulse modulation
internal, external AC/DC
Oto 100%?)
0.1%
<4% of reading +1 %
<1%
<2%
<0.4 dB
<3 ав
«0.2 rad
«0.4 rad at f>1.04 GHz (SMY 02)
100 КО; 600 О jumper-selected
1 Vp (for inaccuracy >3%: high/low
indication)
internal, external AC/DC
10 MHz
1.25 MHz
2.5 MHz
5 MHz
10 MHz
20 MHz
«1276, min. 10 Hz
«376 of reading + 20 Hz
«0.376, ур. 0.1%
«3 dB, typ. 1 dB
«0.176
>50 dB
>76 dB
>70 dB
typ. 0.1%
<1 Hz + 0.126 of deviation
ЕМ/ФМ EXT
100 КО; 600 © jumper-selected
1 Vp (for inaccuracy >3%: high/low
indication for AF = 10 Hz to 100 kHz)
internal, external AC
200 rad
25 rad
50 rad
100 rad
200 rad
400 rad
Signal Generator SMY 5
(+ too)
le ar (00k
Resolution
Setting error at AF = 1 kHz
FM distortion at AF = 1 kHz
and half the maximum deviation
Modulation frequency response
flatness
20 Hz to 20 kHz
Modulation input
Input impedance
Input voltage for selected
deviation
Pulse modulation
Mode
On/off ratio
Rise/fall time (10/9076)
Pulse delay
Modulation input
Input level
Input impedance
Internal modulation generator
Frequency range
«126, min. 0.01 rad
<5% of reading + 0.02 rad
«0.595 (typ. 0.2%)
<3 dB (typ. 1 dB)
ЕМ/ФМ EXT
100 КО; 600 О jumperselected
1 Vp (for inaccuracy >3%: high/low
indication)
external
>80 dB
typ. 4 us
typ. 2.5 us
BLANK
ТТІ/НС logic signal, polarity select-
able
10 kQ
1 Hz to 500 kHz
Resolution 0.1 Hz
Display 3 digits, floating point
Frequency error «5 x 107?
Frequency response flatness
up to 50 kHz «0.2 dB
up to 100 kHz «0.3 dB
Harmonic distortion
(20 Hz to 100 kHz) «0.19;
0.1 ! = ==
|
== ===
TAE AE
0.01 +
f[Hz]10 20 50 100 200 500
Ws ЯС Әс Oe 20k SOR OOK
Typical harmonic distortion of AF synthesizer as a function of frequency
Output voltage
Frequency setting time
Memory
Remote control
System
Connector
IEC/IEEE-bus address
Interface functions
General data
Temperature range
Data to specification
Storage temperature
Climatic conditions
Humidity
1 V5 +1% (Roy <10 О, R 5200 0)
210 ms (after receiving last IEC/IEEE-
bus character)
nonvolatile, for 50 front-panel setups
IEC 625 (IEEE 488)
Amphenol, 24-contact
0 to 30
SH1, АНТ, Тб, LA, SR1, RLT, PPO,
ОСТ, DTO, CO
from O to 55°C
complying with IEC 68-2-1 and
IEC 68-2-2
—40 to +70°С
95% relative humidity at +40°С; com-
plying with IEC 68-2-3
Mechanical resistance
Sinewave vibration
Electromagnetic compatibility
RF leakage
Radiated susceptibility
Power supply
Safety
Dimensions (W x H x D)
SMYOI
SMYO2
Weight
5МҮ01
5МҮ02
Ordering information
Signal Generator
Accessories supplied
Recommended extras
Option Reference Oscillator OCXO
Rear-panel Connectors for RF
and AF
Service Kit
Service Manual SMY
5 to 150 Hz, max. 2g at 55 Hz, max.
0.5 g in range 55 to 150 Hz, comply-
ing with IEC 68-2-6, IEC 1010-1 and
MIL-T-28800D, class 5
complying with EN 50081-1 and
EN 50082-1 (ЕС ЕМС regulations)
«0.1 uV (measured with a two-turn coil
of 2.5 cm in diameter at a distance of
2.5 cm from any point of enclosure)
10 V/m
100 V/230 V (AC) -10 to «1576,
120 V/220 V (AC) -12.5 to «1076,
47 to 440 Hz, max. 120 VA
complying with DIN VDE 0411/
IEC 66E and IEC 1010-1
435 mm x 147 mm x 350 mm
MARES ESTAS SISO)
435 mm x 147 mm x 460 mm
WARS. FONE UA
11 kg (24 lbs)
12 kg (26 lbs)
SMY 01 1062.5502.11
SMY 02 1062.5502.12
power cord, operating manual
SMY-B 1 1062.7505.02
5МҮВ10 1062.8001.02
SMY-Z2 1062.7805.02
1062.5583.24
Certified Quality System
ISO 9001
DQS REG. NO 1954-02
1) Valid for levels 2—127 dBm, not with special function »non-interrupting level
setting«.
) The modulation depth selectable within the guaranteed AM specifications
linearly decreases for levels from 7 to 13 dBm. A status message appears if
the modulation depth is too high.
) Does not apply to special function »ALC — bandwidth, narrow«.
Valid after calibration for one hour and for temperature variations <5°C.
ROHDE & SCHWARZ
ROHDE & SCHWARZ GmbH & Co. KG - Mühldorfstraße 15. D-81671 München
Р.О.В. 801469 . D-81614 München - Telephone +4989 4129-0 . Fax +4989 4129-3567
ROHDE&SCHWARZ
EC Certificate of Conformity
(to EMC Directive 89/336/EEC)
This is to certify that
Signal Generator
SMY 01/02
1062.5502.11/.12
(equipment, type, designation)
complies with the provisions of the Directive of the Council of the European
Communities on the approximation of the laws of the Member States relating to
electromagnetic compatibility (EMC Directive 89/336/EEC).
This declaration of conformity of the European Communities is the result of an
examination carried out by the Quality Assurance Department of ROHDE & SCHWARZ
in accordance with European Standards EN 50081-1 and EN 50082- 1, as laid down in
Article 10 of the Directive.
ROHDE & SCHWARZ
GmbH & Co. KG
1062.5502.11 CE Е-1
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ROHDE&SCHWARZ
EC Certificate of Conformity
Certificate No.: 9502126
This is to certify that:
Equipment type Order No. Designation
SMY-B1 1062.7505.02 Reference Oscillator OCXO
complies with the provisions of the Directive of the Council of the European Union on the
approximation of the laws of the Member States
- relating to electromagnetic compatibility
(89/336/EEC revised by 91/263/EEC, 92/31/EEC)
Conformity is proven by compliance with the following standards:
ЕМ50081-1: 1992
EN50082-1 : 1992
Affixing the EC conformity mark as from 1995
ROHDE & SCHWARZ GmbH & Co. KG
Mühldorfstr. 15, D-81671 München
Munich, 06.11.95 Central Quality Management FS-QZ / Becker
1062.7505.02 CE E-1
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1 Preparation for Use
1.1 Putting into Operation
Before putting the SMY into operation, see to it that
e the covers of the casing are put on and bolted,
e the ventilation ducts are free,
e there are no signal voltage levels exceeding the permissible limits present at the inputs,
e the outputs of the instrument are not overloaded or connected incorrectly.
If this is not observed, the instrument might be damaged.
1.2 Power Supply/Power Fuses
The SMY can be operated at a.c. systems of 100 to 120 V and 200 to 240 V at system frequencies of
47 to 440 Hz. The power supply socket is at the rear of the instrument.
Adaption of the power supply, exchange of the power fuse:
» Withdraw the power supply cable.
> Open the cover of the voltage selector at the rear of the instrument using a screwdriver.
» Remove the coding cylinder now accessible and set in in such a way that the voltage value desired
can be read from outside.
» Close the cover pressing it firmly.
» Check whether the voltage value desired is visible from outside in the window of the cover.
1.3 Mounting into a 19" Rack
The SMY can be mounted into a 19" rack by means of rack adapter ZZA-93 (stock no. 396.4892.00).
The mounting instructions are attached to the adapter.
Caution: When mounting into the rack, ensure unhindered admission of air at the perforation of the
side panels and air escape at the rear of the instrument.
1062.5502.11 1.1 E-3
1.4 Option SMY-B1
The SMY can be equipped with option SMY-B1, reference oscillator, OCXO.
Reference hr lis briefly displayed in the amplitude/modulation display after switch-on of the instrument
if the option has been fitted.
Further details can be found in section "Reference Frequency Int/Ext." as well as the data sheet.
Subsequent fitting of option SMY-B1:
The crystal oscillator has been tuned to nominal frequency with R&S and the appropriate tuning
voltage noted on the option. Note this tuning voltage down on a note sheet as the value must be
transmitted into the memory of the signal generator after fitting the option.
The fitted option is automatically recognized from the firmware.
Opening the casing œ
e
Fitting the option .
Closing the casing
Set the tuning °
voltage
The crystal oscillator can
service manual.
1062.5502.11
Loosen four screws in the two rear panel feet and withdraw feet.
Withdraw the upper cover to the rear.
Turn the instrument.
Withdraw the lower cover to the rear.
The option is fitted behind the modules at the free space of the left side
panel in such a way that the ribbon cable is at the top. It is fastened
mechanically at the side panel by means of the 4 screws supplied.
Insert ribbon cable W22 into socket X22 of the power supply unit.
Withdraw coaxial cable W28 from socket X711 of the option and connect
it to socket X128 of module A4 "synthesis".
Fix the upper and lower cover in the reverse order as in opening the
instrument.
Insert and screw down the rear panel feet.
Switch on special function "Calibration REF-OSC" by means of code 51.
Using the tuning voltage previously noted, calculate a value for setting
the D/A converter (DAC) according to the following equation:
tuning voltage
оу
Enter the DAC value.
Terminate special function "Calibration REF-OSC" by means of code 52.
DAC = 4096 x
be recalibrated to compensate for aging. Calibration is described in the
1.2 E-3
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2 Manual Operation
Signal generator SMY can be operated easily and comfortably. It can be set via the keyboard, the
rotary knob variation and via the IEC-bus remote control interface (remote control of the SMY is
described in detail in section 3).
On the following pages, you will find the front and rear panel views of the instrument, each with short
explanations.
If you are getting familiar with the SMY and like to have a fast overview, please read section 2.2,
"Pattern Setting for First Users", and then section 2.3, "Basic Operation" first.
The complete functions of the manual operation are described as of Section 2.4.
Values mentioned in this section are not guaranteed, only the technical data in the specifications are
binding.
1062.5502.11 2.1 E-3
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2.2 Pattern Setting for First Users
The fastest way for first users to get familiar with the operation of the instrument is to execute the
pattern setting of this section.
A setting is made from the left to the right in the order Parameter — Data — Unit.
Operating steps Explanations
Reset instrument to the defined
status.
WA OO ЕН | Set RF to 250 MHz.
Anal
2.3 Basic Operation
Selection of the Parameters
The PARAMETER ON/OFF keypad is used to set the parameter to which numerical entries and
variations refer. The set parameter is indicated by the LED flashing. Only one parameter can be set at
a time. The only exception is the STEP parameter which is set at the same time as another parameter
(to enter the step size for the STEP function).
Fig. 2-1 PARAMETER ON/OFF keypad
1062.5502.11 2.4 E-3
Switching the parameters on and off
Parameters which сап be switched on and off are AM, FM, ФМ, AF, LEVEL.
The parameters are switched on by pressing the parameter key and then one of the three ON keys
(INT/ON, EXT AC and EXT ОС) in the parameter keypad. The parameters are then switched to the
Stored value of the last setting.
The parameters can also be switched to numerical entry using one of the ENTER/UNITS keys. If the
data input is then omitted, the parameter is set again to the stored value of the last setting.
The parameters are switched off by pressing the parameter key and then the OFF key in the ON/OFF
key column of the parameter keypad.
Fig. 2-2 DATA and ENTER/UNITS keypad
Numerical entry
A value is entered in the order Parameter — Data — Unit:
Setting the RF to
1 MHz
The parameter need not be set again for further entries once it has been set (parameter LED on). This
does not apply to parameters SPEC, IEC ADD and STEP which only remain set for one entry.
The value is set by pressing an ENTER/UNITS key.
1062.5502.11 2.5 E-3
Numerical entries must always Бе terminated by pressing one of the ENTER/UNITS keys. Any of the
four ENTER/UNITS keys can be used for parameters without a unit.
Calling memory
location setting 5
Switch-on of special
function AM two-tone
Correction of entry
An entered value can be cleared before being set (i. e. before pressing one of the ENTER/UNITS keys)
by pressing the key of the set parameter (LED on) or one of the other parameters.
Entries made via the numerical keypad can be corrected with the key "-" as long as one of the ENTER
keys was not pressed. One digit is cleared each time the key "-" is pressed.
Changing the unit
In order to change the unit displayed, set the parameter (RF or LEVEL) and press the required unit in
the ENTER/UNITS column.
The level is displayed
in mV and shall be
displayed in dbm.
The parameter key need not be pressed again if the parameter has already been set (LED on).
1062.5502.11 2.6 E-3
Displays
The RF is output with up to 10 digits in the FREQUENCY display:
The following is also output in this display:
Step size for STEP variation of RF,
status codes of the set special functions,
external reference mode and
the IEC-bus address.
The following is output in the AMPLITUDE display:
level of the RF signal,
step size for the STEP variation of the level,
measured values of internal test points (diagnostic test),
reference OVERLOAD if the RF output is externally overloaded and
reference br | if the SMY is fitted with this option.
The following is output in the MODULATION display:
type of modulation switched on,
parameters modulation depth and deviation,
AF,
step sizes for the STEP variation of the modulation parameters and AF
warning LOW or HIGH if the external modulation voltage is not equal to 1 V (Vp).
number of memory location for STO, RCL and SEQ,
fine variation range with special function "non-interrupting level setting" on,
numbers of internal test points (diagnostic test) and
status codes of function/input errors and overrange/underrange settings.
Display of functions which are not switched on
The parameters of functions which are not switched on such as AM modulation depth or FM deviation
are displayed as long as the respective parameter key is pressed.
Display of entered numerical value
While entering a numerical value (DATA keys), the digits of the newly entered value are progressively
output in the display of the related parameter.
1062.5502.11 2/0
E-3
Variation
Parameters AM modulation depth, FM deviation, pM deviation, AF, RF and LEVEL can be varied.
The parameter currently set in the parameter keypad can always be varied using the rotary knob.
For further information, please see section "Variation, Rotary Knob".
Store - recall
The generator can store settings which can later be recalled. This function is accessed using the keys
in the MEMORY keypad. Further information in sections "Store- Recall" and "Sequence".
Fig. 2-3 MEMORY keypad
Special functions
Special functions extend the given settings indicated on the front panel. Further information in section
"Special Functions". |
Status
Input errors are indicated in the modulation display by a brief appearance of the status code identifying
the error and flashing of the STATUS LED.
Function errors are indicated by continuous flashing of the STATUS LED. The status code describing
the error appears in the modulation display when the STATUS key is pressed.
Overrange/underrange settings are indicated by continuous lighting of the STATUS LED. The status
code describing the setting appears in the modulation display when the STATUS key is pressed.
Continuous lighting of the STATUS LED also indicates that a special function is switched on. The
status code describing the special function is output in the frequency display by pressing the STATUS
key. Further information in section "Status".
IEC-bus address
The IEC-bus address can be output in the frequency display and set via the keyboard. Further
information in section "IEC-bus Address".
Instrument preset
The generator is set to a defined basic status by means of key PRESET. For further information,
please see section "Instrument Preset".
1062.5502.11 2.8 E-3
2.4 Power-on Status
The generator has the same status when switched on as before switching off.
Exceptions:
е Local mode is always set.
e An RQS can be output on the IEC bus each time the instrument is switched on.
e For setting the registers of the service request function, see sections "Service Request and Status
Registers" and "Resetting Device Function".
A function test is carried out following switch-on. The ROM, EPROM and RAM contents are checked.
The LED of the STATUS key flashes if an error is detected. The associated status display is output in
the modulation display by pressing the STATUS key.
The preset status is set if the status prior to switch-off cannot be set again because of a memory error.
Display: The БОР address set is displayed in the frequency display and the information
|
is indicated іп the amplitude/modulation display following power-on for a brief period if
the unit is equipped with option SMY-B1.
2.5 Internal/External Reference Frequency
The internal standard reference source of the SMY is a 10-MHz crystal oscillator. Higher demands on
frequency accuracy are satisfied by the option Reference Oscillator SMY-B1, OCXO. Subsequent
fitting of this option is described in section "Option SMY-B1".
In internal reference mode, the internal reference signal with a frequency of 10 MHz is present at the
female connector REF FREQ 10MHz.
In external reference mode, an external signal with a frequency of 5 or 10 MHz must be fed into the
female connector REF FREQ 10MHz. Synchronization to 5 or 10 MHz is automatic.
Frequency at the input/output
REF FREQ 10MHz: 10 MHz
Internal reference mode: Signal output
(Vrms = 1V, ЕМЕ),
female connector REF FREQ 10MHz at the rear panel.
External reference mode: Signal input (0.2 V < Vrms < 2 V,
sinewave, squarewave or TTL),
female connector REF FREQ 10MHz at the rear panel.
The internal or external reference is selected using the keyboard or via the IEC bus.
Setting for external \ REFERENCE_OSCILLATOR:EXTERNAL
reference SS
Setting for internal NS REFERENCE_OSCILLATOR:INTERNAL
reference
1062.5502.11 2.9 E-3
Display: The note "REF EXT" appears in the frequency display if the external reference mode
has been selected.
Note: The externally applied reference frequency of 10 MHz must not deviate by more than
+ 5-10 from 10 MHz.
Associated
instructions: Special function "Calibration REF-OSC"
2.6 Frequency (RF)
Range: 9 kHz to 1040 MHz (adjustable as from 5 kHz without guarantee of
rated specifications)
Resolution: 1Hz
Units: GHz, MHz, kHz, Hz
Setting: RF —- data —- unit
IEC-Bus Code
Setting the RF to
500 MHz
Display: The RF output frequency appears in the frequency display.
Associated
instructions: — Internal/external reference frequency
2.7 LEVEL
Range: -140 to 13 dBm (settable up to 19 dBm without guarantee of rated specifications)
Resolution: 0.1 dB
Units: dBm, dBuV, mV, pV
Setting: LEVEL —— data —— unit
Setting of level RN
60 dBuV 5 LEVEL 60DBUV
Switching off the
eve! LEVEL:OFF
Switching on the mue
Associated
instructions: — Non-interrupting level setting
Level EMF
1062.5502.11 2.10 E-3
2.8 Non-Interrupting Level Setting
Independent of the set value, the special function "Non-interrupting level setting" permits to attenuate
the level electronically up to 20 dB without interruption, i. e. without using the interrupting mechanical
attenuator. The value set when switching on the special function is used as reference level. Within the
20-dB range, the level can be set via the keyboard or the IEC bus.
Setting of a level outside the 20-dB range is made using the interrupting mechanical attenuator set.
Starting at this new level, further level settings are made non-interruptive again in the range 0 to -20
dB.
If the special function "Non-interrupting level setting" is switched on again when already having been
Switched on, this has the same effect as if the special function were switched on for the first time, i. e.
the full 20-dB setting range is then available with respect to the set level.
Switching on special function with code 1
Switching off special function with code 2
Note: Specifications concerning level error, modulation depth error and distortion factor with
AM do not apply with the special function "Non-interrupting level setting" switched on.
) see special functions
Associated
instructions: LEVEL
Level EMF
Special functions
2.9 Level Control Without Function
With the special function "Level control without function" (ALC off), internal level control is switched
over to a sample-and-hold mode. This special function is used for multi-transmitter measurements to
achieve a higher signal-to-intermodulation ratio. The self-intermodulation products of two generators
connected using a resistive 6-dB combiner remain below -40 dBc for output levels of 13 dBm, and
below -70 dBc for output levels of less than 0 dBm.
In this special function, the SMY can be operated as usual. With high levels, the VSWR of the input
impedance deteriorates.
Switching on special function with code 21
Switching off special function with code 22
Note: The specifications in the data sheet concerning level error, AM and VSWR do not
apply in the special function "ALC off".
Associated
instructions: LEVEL
Level EMF
Special functions
1062.5502.11 2.11 E-3
2.10 Level EMF
With the special function "Level EMF", the EMF value of the RF voltage is displayed and no longer the
value of the RF voltage into 50 О. The EMF display appears if опе of the units dBuV, mV or pV is
selected.
Switching on special function with code 3 : :
Switching off special function with code 4 ) see special functions
Associated
instructions: LEVEL
Non-interrupting level setting
Special functions
2.11 Internal AF Modulation Frequency
Frequency range: 1 Hz to 500 kHz
Resolution: 0.1 Hz
Resolution of
Display: 3-digit
As a modulation source, the SMY contains an AF synthesizer which is also brought out to be used
externally at socket AF INT. The AF signal at the socket is automatically switched on if an internal
modulation is activated. It can also be switched on if no internal modulation is activated. The output
amplitude is 1V (Ур).
Setting the frequency: АГ oe Data Unit
Setting the AF (int.
modulation frequency)
to 400 Hz
Switching on the AF
signal to the stored
value
Switching off the AF (no effect if internal
signal modulation switched on)
Display: The modulation display indicates the AM modulation depth, the FM/qM deviation and
the AF. The value of the parameter pressed last in the parameter keypad is displayed.
Associated
instructions: Modulation (AM, FM, ФМ)
Two-tone modulation
1062.5502.11 212 E-3
2.12 Modulation, AM
Modulation depth: . Oto 100 %
Resolution: 0.1 %
Ext. modulation frequency range: ОС to 50 kHz
Internal modulation frequencies: 1 Hz to 50 kHz
The internal modulation source and one external modulation source can be switched on simultaneously
(see section "Two-tone modulation").
For increasing levels between 7 dBm and 13 dBm, AM specifications are guaranteed only if the
modulation depth decreases linearly.
When AM is switched on, the ALC bandwidth is automatically set to "broad" if the special functions 13
and 15 are not active.
The AM specifications are not valid in the special function "ALC bandwidth narrow" (Spec 13).
Setting too large a modulation depth causes the status LED to light up. In this case, the status
indication in the modulation display is 70 (see section "Status").
Setting: AM —- Data %
Selection of modulation source: AM = INT/ON ог AM —- EXT AC (EXT DC)
Selection of internal
modulation frequency: See section "Internal AF Modulation Frequency".
Switching off the AM: AM — OFF
Switching on the AM to the
stored value (new value not entered): AM —- INT/ON or AM —- EXT AC (EXT DC)
1062.5502.11 2.13 E-3
А: 8 SES A О УР %4 RR SER Y M
Setting and switching AM 80PCT
on the AM with
m=80 %
AM:EXTERNAL:AC
Selection of the
external modulation
source
Switching off the AM
Display: - В AM”
If amplitude modulation is switched on, this is indicated by
AM ™, AM AM „, AM?" and АМ27%
depending on the modulation source selected.
The modulation depth is output in 3 digits in the modulation display. The display is
common to the modulation depth with AM, the deviation with ЕМ/ФМ and the АҒ
display. The value of the parameter AM, FM, ФМ or AF pressed last in the parameter
keypad is displayed.
Comment on AM DC:
This mode enables external level control or regulation via level detectors with a negative or positive
regulator voltage.
Modulation frequency Жо... о DC to 50 kHz
Modulation depths. сылы ааа О to 100%
Inpubyollage т.а ee -1.0 V to 41.0 V
The level variation range is determined by the modulation depth input. A range from -1 V to «1 V
corresponds to a change in level from levelgy ° (1-m) to leveloy * (14m).
Leveloy is the RF level in V entered numerically.
The maximum control range, e.g. for maximum carrier blanking, is at m = 100 96.
Associated
instructions: LEVEL
Internal AF modulation frequency
Modulation, external source
Two-tone modulation
Pulse modulation
Special function ALC bandwidth
1062.5502.11 2.14 E-3
2.13 Pulse Modulation
Special function "BLANK" permits an external pulse modulation of the SMY. External TTL signals can
be fed into the BLANK input at the rear of the instrument for level blanking.
Special function "BLANK": Switch-on code: 9
Switch-off code: 10
The polarity can be set using special function "BLANK polarity inverted". With the special function
switched off, the RF level is blanked with input level HIGH. With the special function switched on, the
polarity is inverse.
Special function "BLANK polarity inverted": Switch-on code: 11
Switch-off code: 12
Associated
Instructions: Special functions
2.14 Modulation, FM
Deviation: -eeaeee ИИ 0 to 20 MHz (depending on the carrier frequency,
see Data Sheet).
Resolution: «X... unicos. поезы atio 10 Hz to 100 kHz
(depending on the deviation range)
External modulation frequency гапде:............... DC to 2 MHz
Internal modulation frequencies: ....................... 1 Hz to 500 kHz
The internal modulation source and one external modulation source can be switched on simultaneously
(see section "Two-tone modulation").
Attention: Combination FM:INT must always be AC-coupled. With small modulation frequencies, two-
tone DC must be set (see the special functions).
Settings Е FM —- Data —- Unit
Selection of the modulation source: .................. FM — INT/ON or FM —- EXT AC
or FM —- EXT DC
Selection of the int. modulation frequency: ...... See section "Internal AF Modulation Frequency".
Switching off the EM. EMS OFF
Switching on the FM to the
stored value (new value not entered): ................ FM —- INT/ON or FM —— EXT AC
or FM — EXT DC
1062.5502.11 2.15 E-3
SEE d > 3 e PETA ИНЕ p
Setting and switching
on the FM with 40
kHz deviation
FM 40KHZ
Selection of FM:EXTERNAL:AC
modulation source
EXT AC
Switching off the FM
d - [| kHz FM
If frequency modulation is switched on, this is indicated by
EMS EMS FM „, FM?" or ЕМ"
depending on the modulation source selected.
The deviation is output in 3 digits in the modulation display. The display is
common to the deviation with FM, the modulation depth with AM and the AF
display. The value of parameter AM, FM, «M or AF pressed last in the parameter
keypad is displayed.
Associated
instructions: Internal AF modulation frequency
Modulation, external source
Two-tone modulation
Special functions
1062.5502.11 2.16 E-3
2.15 Modulation, ФМ
Deviation: йла улт иа АО ле! үйе 0 to 400 rad (depending on the carrier frequency)
Resolutionisiouss. 5 S co. bel US LSO DE 0.001 to 1 rad (depending on the deviation range)
External modulation frequency range:............... 20 Hz to 20 kHz
Internal modulation frequency range:................ 20 Hz to 20 kHz
The internal and one external modulation source can also be switched on simultaneously (cf. section
"Two-Tone Modulation").
SOUIN суу л о reece ФМ — Data — rad
Selection of the modulation source: .................. ФМ--ІМТ/ОМ or ФМ —- EXT AC
Selection of the int. modulation frequency: ...... Cf. section "AF modulation frequency internal".
Switching off the ФМ: .......................................... ФМ — OFF
Switching on the ФМ without entering a new
value to the one stored: ...................................... ФМ — INT/ON or qM —- EXT AC
Setting and switching
on the ФМ with а
deviation of 20 rad
Selection of modula- PHM:INTERNAL
tion source INT
Switching off the ФМ mm PHM:OFF
Display: - Е 1 rad өм
If ФМ is switched оп, this is indicated, depending оп the modulation source, by
means of
ФМ", pM ,, or oM,
The phase deviation сап be read іп 3 digits in the modulation display. Тһе
numerical display is common to the deviation with FM or qM, the modulation
depth with AM and the AF display. The value of parameter AM, FM, qM or AF
pressed last in the parameter keypad is displayed.
Associated
instructions: Internal AF modulation frequency
Modulation, external source
Two-tone modulation
Special functions
1062.5502.11 2:17 E-3
2.16 Modulation, External Source
Modulation inputs AM EXT and ҒМ/ФМ EXT are available for the modulation fed externally.
For modulations AM and FM, the two modulation inputs can be a.c.-coupled or d.c.-coupled. Selection
is effected using keys EXT AC or EXT DC in the parameter keypad.
The input resistances of both inputs аге 100 КО when the instrument is delivered.
The input resistances can be changed to 600 О by means of internal jumpers. The jumpers are on
module "processor" for AM and on module "synthesis" for ЕМ/ФМ.
The pin positions are:
Input resistance AM FM/pM
module "processor" module "synthesis"
A signal of Vp = 1 V (Vrms = 0.707 V) must be applied to achieve the deviation and modulation depth
accuracies guaranteed in the data sheet.
Deviations from the required input voltage are indicated in the modulation display by LOW or HIGH.
The display LOW appears for voltages Vp «0.97 V, the display HIGH for voltages Vp 21.03 V. An
external voltmeter must be used if greater accuracy is required.
Associated
instructions: Modulation, AM
Modulation, FM
Two-tone modulation
2.17 Modulation, Two-tone
Two-tone modulation takes place with the signals from the internal modulation source and an external
modulation source.
The corresponding special function AM two-tone or ЕМ/ФМ two-tone must be switched on in order to
connect internal and external modulation Signals simultaneously.
Modulation is not switched on simply by switching on the Special function. Entry of the modulation
parameters and switching on and off the modulations must take place exactly as described in the
Sections on modulation AM, FM or ФМ. Separate deviation or modulation depth settings for the internal
and external modulations are not possible. The required voltage of the external modulation signal is 1
у (Ур).
The total deviation or the total modulation depth is equal to twice the value of the one set after value
entry.
1062.5502.11 2.18 E-3
Ensure that the permissible maximum values for deviation and modulation depth, as listed оп the data
sheet, are not exceeded.
Switch on/off codes of the two-tone special functions:
} Type of modulation | of modulation
AM two-tone
ЕМ/ФМ two-tone
Switching оп special FM:DUAL:AC
function "ЕМ/ФМ two-
tone"
or
FM:DUAL:DC
Switching off special
function "FM/@M two-
tone"
Associated
Instructions: Modulation, (AM, FM/qM)
Modulation, external source
Special functions
2.18 Variation, Rotary Knob
The rotary knob enables parameters to be increased or decreased in selectable steps. The set
parameter (whose LED in the parameter keypad is on) is variable.
RF, AF, LEVEL and the modulation depth with AM and the deviation with FM or qM are variable
parameter steps.
A STEP size can be entered for each variable parameter which remains stored when the parameter is
changed.
Operation:
ГА № Clockwise rotation increases the value of the parameter set, counter-clockwise rotation
R 4 j) decreases it.
1062.5502.11 2.19 E-3
Setting the STEP size:
Parameter — Step — Data — Unit
The STEP key must be pressed again for each data input. The parameter key need not be pressed first
if the parameter has already been set (LED is on).
The smallest step sizes for the various parameters are:
Frequency (RF) 1Hz
Frequency (AF) 0.1 Hz
Level (RF) 0.1 dB
Modulation depth (AM) 0.1%
Deviation (FM) 10 Hz
Deviation (ФМ) 0.001 rad
The STEP size of the level may only be entered in dB even if mV or НУ is selected as the level unit.
Example IEC-bus code
Setting an ORES RF:VAR_STEP 25KHZ
RF step size of SS SS
25 kHz
Display: A new step size is output in the display of the set parameter until the entry is
terminated by the unit key. The set value of the parameter is then displayed.
The step size entered for a parameter can be displayed by pressing the
parameter key and then the STEP key.
The step size display is cleared again by pressing a parameter or an
ENTER/UNITS key.
2.19 Store - Recall
99 complete instrument settings can be stored. These comprise the complete instrument status
including all non-displayed settings and all special functions
Storing the current instrument setting:
STO — Memory address — ENTER/UNITS
Recall of an instrument setting:
НСІ — Memory address — ENTER/UNITS
After entering the address, press any ENTER/UNITS key to activate store or recall.
1062.5502.11 2.20 E-3
Values of the memory address:
1to 99 for STO
0 to 99 for RCL
Storing an instrument STORE 7
setting at memory
location 7
Storing an instrument
setting at memory
location 25
STORE 25
Recalling the instru-
ment setting from
i A
memory location 7 RECALL 7
Location O serves for a special function, i.e. the current instrument setting prior to the last memory or
preset recall is stored at this location. This instrument setting can be set again using RCL O.
Using function SEQ (sequence), the memory settings can be recalled by repeated keying.
Display: Reference "MEM" and the memory address are indicated in the modulation
display during entry, e.g.:
[m
MEM
Associated
instructions: Sequence
2.20 Sequence
It is possible to recall stored settings in ascending order by repeated keying using the SEQ key in the
memory keypad. The same sequencing causes a closure of contacts, as e.g. by means of a foot
switch, at the SEQ input (at the rear of the instrument).
The first setting in the sequence of memory calls planned is effected by means of a recall using the
RCL key, the setting stored in the next higher memory location is activated by each subsequent keying
of the SEQ key or the SEQ input. After the highest memory location number (99), the number of the
last RCL call is the one to begin with.
The sequence of the memory addresses starts with 1 if the PRESET key has been actuated before.
1062.5502.11 2.21 E-3
ше 4. М К А 3 А $ s зы Ақ ja
Recall of memory
locations 7, 8, 9 ...
RECALL 7
SEQUENCE
SEQUENCE
Display: The address of the memory location called last is indicated in the modulation display
by the text "МЕМ" following each actuation of the SEQ key.
Associated
instructions: Store - recall
2.21 Special Functions
The special functions enable settings to be made other than those indicated on the front panel.
The special functions are switched on and off using codes (data input) (see Table 2-1).
All special functions which are switched on are switched off using code 0. All special functions are also
Switched off by a PRESET.
IEC-bus code
Switching on the special ATTENUATOR:FIXED
function "Non-interrupting
level setting"
Switching off the special ATTENUATOR:NORMAL
function "Non-interrupting
level setting"
Switching off all
functions
Display: The LED of the STATUS key lights up if a special function is switched on. By
pressing the status key the code of the special function is output on the
FREQUENCY display. If more than one special function is active, the codes are
automatically output repeatedly if the STATUS key is pressed continuously or are
output one after the other every time the STATUS key is pressed (see section
"Status").
1062.5502.11 2.22 E-3
Table 2-1 Special functions
Special functions
Remote Control Command
ATTENUATOR:FIXED
Non-interrupting level setting :
ATTENUATOR:NORMAL
|
Bip vr ve om IS
мөме» ОЙ
ENTE TEL
LEVEL:EMF
LEVEL
AM:DUAL
13
PEDE ora ns eon aller .
PT Mon
LE a СТЫ dl
ЖЕ n SER es a
т 7 =
Display test SPECIAL FUNCTION 31
ROM test SPECIAL FUNCTION 33
31
35
37
1062.5502.11 2.23 E-3
Table 2-1 Special functions (continued)
Special functions сое | Remote Control Command
Готовьте — [e |speemrmenone |
tacones je ievecconmecnoworF |
оета ievecconmecmONON |
(ЕГІ: 22227 — CO ET FUNCTIONS! |
отте сайнаа АЕО | |spscmurwenone |
FM DC center frequency calibration [ss [SPECIAL FUNCTIONSS |
Sue of батон fio [ют о |
ore |
Explanation of the Individual Special Functions:
Switch on diagnostic test point TEST:POINT 1 (e.g. point 1)
Non-interrupting level Non-interrupting level setting is possible in a range of 20 dB. Cf.
setting: section "Non-interrupting Level Setting".
EMF level: Indication of the ЕМЕ voltage. Cf. section "Level ЕМЕ",
AM two tone: AM with internal and external modulation signal. Cf. section "Two-
Tone Modulation".
FM/pM two tone: FM or ФМ with internal and external modulation signal. Cf. section
"Two-Tone Modulation".
BLANK: Level blanking with an external TTL Signal. Cf. section "Pulse
Modulation".
BLANK polarity inverted: Level blanking with inverted polarity. Cf. section "Pulse Modulation".
ALC bandwidth ... The bandwidth of the level control loop can be switched to narrow or
broad for special purposes. In normal State, it is adapted
automatically.
Set (delete) power-on clear Cf. section "Common, Device-Independent Commands" (Table 3-3).
flag:
User request: When entering the code of this special function, the user triggers a
service request via the IEC bus in the LOCAL mode. This service
function does not trigger a status indication. Cf. Section "Service
Request and Status Register".
Display of firmware The special function indicates the number of the firmware version in
version: the amplitude display.
Display test: The special function indicates all display segments. The indication is
held as long as one of the four unit keys is pressed.
ROM test: The special functions check the data contents. A recognized data
RAM test: error is indicated by a blinking of the status LED and after pressing
EEPROM test: the status key by means of an error code. Cf. table 2-3, "Status Codes
of Errors".
VCO calibration routine: Self-calibration for the optimal working point of the VCO-PLL. The
calibration routine must only be executed in the case of data loss in
the RAM or after the exchange of a module.
1062.5502.11 2.24 E-3
FM calibration routine: Self-calibration of the FM. The calibration routine determines
correction values to compensate for the fluctuating modulation
sensitivity. The routine is to be executed in the case of considerable
variations of the temperature, data loss in the RAM or the exchange
of a module.
LEVEL PRESET Self-calibration for the optimal working point of the level control loop.
calibration routine: The calibration routine must only be executed in the case of data loss
in the RAM or after the exchange of a module.
Calibration RF level: Permits the input of correction values for the calibrated RF level (see
service manual).
Level correction on/off: Switching on or off level correction (on = default status).
Calibration REF-OSC: Permits the input of the correction value for the calibrated reference
frequency.
FM DC center frequency Calibration of the center frequency when FM DC is set.
calibration:
2.22 Self-Test
The SMY carries out a self-test on power-on and permanently during operation.
The RAM and ROM contents are checked when the instrument is switched on. The most important
instrument functions are automatically monitored during operation.
A faulty function determined during the self-test is indicated by a flashing of the status LED and by a
SERVICE Request message. The status code to identify the error can be output in the modulation
display by pressing the STATUS key (see Table 2-3, status codes of errors and overrange/underrange
settings in section "Status").
In addition, 16 internal test points can be scanned via the keyboard or the IEC bus and the results read
out and displayed in the amplitude display. This more detailed test facility is described in the Service
Manual.
2.23 Status
The generator produces numerical status messages to identify special functions and errors.
The status codes of special functions are output in the frequency display. The status codes of errors
(input or function errors) are output in the modulation display by the test "Err." in the amplitude display.
They can also be scanned via the IEC bus (see section "Error Handling"). The meanings of the status
codes are defined in tables 2-2 and 2-3.
Operation: The status codes are output in the frequency and modulation displays as long as
the STATUS key is pressed. If several status messages are applicable, the codes
are automatically output repeatedly if the STATUS key is pressed continuously or
are output one after the other every time the STATUS key is stroked.
1062.5502.11 2.25 E-3
Display:
IEC bus:
Table 2-2
бы» уен. УШ ШЫН С К YET TE
o NEN
BENNETT TTD REIN
lea 7
irte Ce tS
WE NEN S e
ШЕКТЕ emmy mea —— O O
EMEN T pro OOO O
ELENCO DON NN
[Teva да вычеты PORTE
ШЕГЕНІ”. |
1062.5502.11
The STATUS LED lights up continuously if special functions are switched on or
overrange/underrange settings are made.
The STATUS LED flashes continuously in the case of function errors.
The STATUS LED flashes briefly in the case of input errors.
The status codes of the special functions are output in the frequency display in the
following form:
cies Ө ey
The code is 0 if no special function is switched оп.
The status codes of the function errors and of overrange/underrange settings are output
in the amplitude/modulation display in the following form:
Шалы
The code is 0 if no error is present.
In the case of operator errors, the status codes of the input errors automatically appear
briefly in the amplitude/modulation display in the following form:
ERRARE
A Service Request message (SRQ) may be output in the case of input and function
errors and overrange/underrange settings. The type of error can be recognized from
the event status register. An error code can be read out to permit exact error
identification.
Status codes of the special functions
2.26 E-3
10-MHz reference loop out of synchronisation
640-MHz loop out of synchronisation
Main oscillator loop out of synchronisation
Level control not working
External overvoltage at the RF output
ROM data error
RAM data error of the settings stored
RAM data error of the VCO correction values
RAM data error of the FM correction values
RAM data error of the LEVEL PRESET correction values
EEPROM data error of the RF level correction values
EEPROM data error of the REF OSC correction values
Calibration cannot be executed
Input error
Syntax error
Value entry without the permissible range
Impermissible unit to the parameter selected
Impermissible header (IEC bus)
Deviation input is too high with the RF set
Variation is not possible unless the respective parameter is switched on (IEC bus).
57 FM DC center frequency calibration is only possible when FM DC is set.
Overrange/Underrange Settings
70 AM not specified with the level set
7
—
АМ not specified for AF > 50 kHz
RF « 9 kHz
N
7
оз
AM EXT signal out of tolerance
74 ЕМ/ФМ EXT signal out of tolerance
75 ФМ not specified for AF « 20 Hz or AF > 20 kHz
76 AF » 500 kHz
Level » 13 dBm
OVEN COLD
8|
8
1062.5502.11 2.07,
Е-3
2.24 Instrument Preset
The instrument is set to a defined basic status by pressing the key PRESET.
Table 2-4 Preset status
ee 0000]
A CT
Status and mask registers of the service request| unchanged
functions
TA AAA ыы
GR E
ПИ саана ИФН ae ew r]
peas ы лысын ee
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CIT ERE ше ЕАН RE
ШЕЛІГІ!" REESE EAR
(Monat etm — НАША ШИНЕ T
Memory locations
1062.5502.11 2.28
E-3
2.25 IEC-Bus Address
The IEC-bus address can be displayed and set using the keys. It is stored until overwritten by a new
address. The address range is from 0 to 30. Тһе SMY is set to address 28 on delivery.
LOC/IEC ADD
Output IEC-bus address on
display
LOC/IEC ADD
Set IEC-bus address 7
Display: The IEC-bus address is output in the frequency display which is cleared by pressing
any one of the parameter keys or the ENTER/UNITS keys.
1062.5502.11 2.29 E-3
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3 Remote Control of Instrument via IEC Bus
The SMY is fitted with an IEC-bus interface as a standard. The interface corresponds to the IEC
625-1/IEEE 488/1 standard.
In addition, standard IEC 625-2/IEEE 488.2 (IEEE standard codes, formats, protocols and common
commands) has been considered. This includes a description of the data transmission formats and
common commands.
The command set of the SMY is upward compatible with SMX, SMG, SMH, SMGU and SMHU (as far
as the instruments have comparable functions).
3.1 Brief Instructions for Simple Applications
» Connect controller and SMY using the IEC bus cable.
» Set device address 28 on the SMY:
HUE ы
» Device settings (examples)
LOC/IEC ADD
The first command sent via the IEC bus interface sets the SMY to the remote status indicated by
the REMOTE LED being illuminated.
BASIC command
(Rohde & Schwarz BASIC) Effect on the SMY
TBCOUINZONNONRSITS Instrument in basic status
IECOUT 28, "RF 155.623458MHZ* Frequency (RF) is set
IECOUT 28, "LEVEL -11.5DBM* Level (into 50 Q) is set
IECOUT 28, “АЕ 12.5KH2; FM:INT 40KH2° Modulation frequency (AF) and internal frequency modulation
are set.
» Following actuation of the LOC/IEC ADD key, the SMY abandons the remote status and is ready for
manual operation again.
3.2 Setting the Device Address
In the LOCAL mode (REMOTE LED off), the IEC bus address can be displayed and set using key
LOC/IEC ADD (cf. the page preceding as well). The IEC bus address remains stored also at power-off
of the instrument. The address range covers 0 to 30. The instrument is factory-set to address 28.
The address is the decimal equivalent of bits 1 to 5 of the talker or listener address. This form is also
used for the IEC bus commands of the controllers.
1062.5502.11 3.1 E-3
3.3 Device Messages
Device messages are transmitted on the data lines of the IEC bus, with the attention line being High
(not active). The ASCII code (ISO 7-bit code) is used (cf. Table 3-8).
e The messages from the controller to the SMY (programming messages) are referred to as
commands in the following.
They include the following four groups:
* Device-specific setting commands
* Device-specific data request commands
* . Common, device-independent setting commands (Common commands in accordance with
IEEE 488.2)
* J Common, device-independent data request commands (Common queries in accordance with
IEEE 488.2)
The tables listed in the following specify all these commands. Their respective syntax is described
in section 3.3.6.
e The messages from the SMY to the controller (response messages) are specified in combination
with their associated data request commands. As to their syntax, refer to section 3.3.7.
3.3.1 Device-specific Setting Commands
All the instrument functions to be set via the SMY keyboard can also be obtained via the IEC bus. The
instrument performance initiated via setting commands fully corresponds to that obtained by keyboard
entries.
The shortest notation possible is shown in bold print.
Table 3-1
Switch on AF to stored value
1)
Switch off AF
1)
ALc:AUTO Select level control bandwidth
automatically
ALc:FIXED Switch off level control
ALc:NAR
ROW Level control bandwidth is narrow
ALc:NoRMAL Switch on level control
ALc:WIDE Level control bandwidth is wide
1062.5502.11 3.2 E-3
Митегіс Permis- Default Explanation
Value sible Units Unit
Switch on AM with modulation source
selected and set modulation depth
2)
ren
AM:EXTERNAL:AC
AM:ExTERNAL:Dc
As above, but set stored value of
modulation depth
AM:INTERNAL
AM:EXTERNAL:AC
AM:ExTERNAL:Dc
AM:DUAL:Ac Switch on two-tone AM with intemal and
extemal source and set modulation
AM:DuaL:Dc depth
AM:DUAL:Ac As above, but set stored value of the
modulation depth.
зао ж
АМ: E E STEP и step width of AM modulation
depth
(%)
3 Non-interrupting level setting (Switch on
ATTENUATOR:NORMAL Normal level setting function
(switch off special function 1)
BLANK:ON Level blanking (pulse modulation) on
Level blanking (pulse modulation) off
BLANK:OFF
BLANK:INVERTED BLANK polarity inverted
BLANK polarity normal
BLANK:NORMAL
DECREMENT:AF
DECREMENT:AM
DECREMENT:FM
DECREMENT:LEVEL
DECREMENT:PHM
DECREMENT:RF
FM
FM:INTERNAL
Corresponds to variation using the rotary
Entry of step width using VAR. STEP
for the respective parameter.
Switch on FM with modulation source
selected and set FM deviation
FM:EXTERNAL:AC
FM:EXTERNAL:Dc
FM: INTERNAL As above, but set stored value of
FM:EXTERNAL:Ac
FM:EXTERNAL:Dc
FM:DuaL:Ac
FM:DuaL:Dc
Switch on two-tone FM with external and
internal source and set deviation.
1062.5502.11 3.3 E-3
Header Numeric Permis- Explanation
Value sible Units
FM:DuaL:Ac As above, but set stored value of the
FM:DuaL:Dc
FM:VAR_STEP
Value Variation step width of FM deviation
HEADER:ON 5)
HEADER:OFF
INCREMENT:AF
INCREMENT:AM each parameter.
INCREMENT:FM
INCREMENT:LEVEL
INCREMENT:PHM
INCREMENT:RF
LEVEL Value DBM
DBUV
V
MV
UV
1 H 4
LEVEL:VAR STEP Value Variation step width of the level
LEVEL:OFF Switch off output signal
LEVEL:ON Switch on output signal to stored value
of level again
LEVEL:CORRECT INDEX Value Level correction:
Select correction value index, associated
frequency is set (see Service Manual)
LEvEL:CORRECTION Value Entering correction value and storing it
(see Service Manual)
LEVEL:CORRECTION:ON Special function:
Level Correction orvoff
LEVEL:CORRECTION:OFF
PHM: Switch on phase modulation with
modulation source selected and set FM
PHM:INTERNAL deviation.
T
N
KHZ
MHZ
Messages from the SMY to the
controller are sent with or without header
Corresponds to rotary knob variation.
Entry of step width with VAR_STEP for
C=
ШІ =
PHM:EXTERNAL
PHM: INTERNAL As above, but set stored value of the
PHM:EXTERNAL
1062.5502.11 3.4 E-3
Header Numeric Permis- Explanation
Value sible Units
PHM:DUAL Value RAD Switch on two-tone phase modulation
with internal and external source and set
deviation.
PHM:DUAL As above, but set stored value of the
deviation.
Set device to basic status (see Section
"Instrument Preset")
Call a stored device setting (same effect
as *RCL)
Internal reference frequency
RF:VAR. STEP Value HZ Variation step width of the frequency
KHZ
MHZ
gs Mee EMERE EEN TT
4) |
SPECIAL FUNCTION Value Switching on/off a special function by
means of the respective code
(see Table 2-1)
STORE Value Store device setting (same effect as
*SAV)
TALK TERMINATOR:NL. END 5) Terminator in talk mode:
TALK. TERMINATOR:CR, NL New Line * End or
-TE -NL-END Carriage Retum + New Line + End
TEST:POINT Value Selection of an internal test point (1 to
16) to measure the test voltage.
Switches on special function "Diagnostic
Test Point" (see Service Manual).
TEsT:OFF Switches off special function
"Diagnostic Test Point"
1 These commands аге only required if the AF output (connector AF INT) is to be used.
2 If the modulation source (INTERNAL, EXTERNAL or DUAL) is not specified,
- selection is internal if AM was not switched on before,
- the previous source is retained unchanged if AM was switched on.
3) If the modulation source (INTERNAL, EXTERNAL or DUAL) is not specified,
- selection is internal if FM/PHM was not switched on before,
- the previous source is retained unchanged if FM/PHM was switched on.
4) The 1st memory location in the sequence is defined by the "НСІ command.
Example: Command sequence: *RCL47 SEQ SEQ SEQ SEQ
Memory location: 47 48 49 50 47
5) Default setting following switch-on of operating voltage or command *RST.
1062.5502.11 3.5 E-3
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3.3.3 Common, Device-independent Setting Commands
(Common Commands in Accordance with IEEE 488.2)
Table 3-3
Clear Status
Sets the Event Status Register (ESR) to zero. The mask registers of the Service Request
function (ESE and SRE) are not changed.
A current Service Request message is only rosat | not caused by a message in the output
buffer or if *CLS is at the start of a command line.
Event Status Enable
The Event Status Enable mask register is set to the specified value interpreted as a decimal
number
Operation Complete
Sets bit O (Operation Complete) in the Event Status register if all previous commands have
been processed (see Section "Timing of command Processing and Synchronization").
Power On Clear Flag
If 1: The Service Request Enable mask register (SRE) and the Event Status Enable mask
register (ESE) are also cleared when the instrument is switched on.
If 0: The above-mentioned registers retain their contents even when the instrument is
Switched off and on. This enables a Service Request when the instrument is switched on.
The Power On Clear Flag can be set with special function 17 and cleared with special
function 18 (manual operation).
Recall
Call a stored instrument setting (cf. Section "Store-Recall")
Reset
Acts like the PRESET key (see Section "Instrument Preset’) and
— switches to messages with header (like command HEADER:ON),
— sets the terminator in talker mode to "NEW Line + Епа",
Does not change the status of the IEC-bus interface, the set IEC-bus address, and the
registers of the Service Request function.
Save
Store instrument setting (cf. Section "Store-Recall")
Service Request Enable
The Service Pv Enable mask register is set to the specified value interpreted as a
decimal number /.
Wait to Continue
Interrupts command processing until all preceding commands have been executed (cf.
Section "Command Processing Sequence and Synchronization")
7) See section "Service Request and Status Register"
1062.5502.11
3.9 E-3
3.3.4 Common, Device-independent Data Request Commands
(Common Queries in Accordance with IEEE 488.2)
Table 3-4
Event Status Enable Query
The contents of the Event Status Enable mask register is output in
decimal.
Event Status Register Query
The contents of the Event Status Register is output in decimal and
the register is then set to zero.
Identification Query
The following identification text is transmitted via the IEC bus (always
without header ) as a reply to the command *IDN?.
ROHDE&SCHWARZ,SMY01,0,1.00
Manufacturer Modal Firmware release
(example)
Reserved for serial number,
not used in SMY
Operation Complete Query
Message “ОРС 1" or only "1" (depending on the status of the header
flag) is entered into the output buffer and bit 4 (message available) in
the status byte is set if all previous commands have been processed
(see Section "Timing of Command Processing and
Synchronization").
Option Query
Transmits information on an option possibly fitted via the IEC bus
(always without header).
B1: If option SMY-B1, Reference Oscillator, is fitted.
0: Ifno option is fitted.
Power On Clear Query
To read the status of the Power On Clear Flag,
see “РЗС in Table 3-3
Service Request Enable Query
The contents of the Service Request Enable mask register is output
in decimal.
Status Byte Query
The contents of the status byte is output in decimal.
Self-test Query
m ме
ШЫЙ ae Ee
МТ
1062.5502.11 3.10 E-3
A ROM, EEPROM and RAM test is performed. The result can be
obtained from the data value of the output message:
0: no error
6: ROM error
7: RAM error
8: EEPROM error
Example with several errors:
67: ROM and RAM error
3.3.5 Examples
(The Rohde & Schwarz BASIC commands have been used. The IEC bus address of the SMY has been
taken to be 28).
1) Basic setting
TECOUTS СЕЕП or
TECOUITM2 87 “PRESETS
2) Device identification via IEC bus:
10 IECTERM 10 (input terminator: new line)
20 IECOUT 28, **IDN?*
30 ІЕСІМ 28, А5
40 PRINT А5
3) RF setting
IECOUT 28, "RF 123.456МН2" о
LECOUT 28, FRE 17297456568 о
IECOUT 28, "RF 123456000"
4) RF level setting
All the possibilities as outlined effectuate the same setting.
IECOUT 28, "LEVEL 12.5DBM*
ТЕСОУТ 29/28 DEVIMU2.5*
IECOUT 28, "LEVEL 119.5DBUV*
IECOUT 28, "LEVEL 0.944V*
IECOUT 28, "Level 944mV*®
IECOUT 28, "LEVEL 944МУ"
IECOUT 28, "LEVEL:EMF 1.888V*
22292999
5) Non-interrupting variation of RF level between 21V and 20 uV in steps of 0.2 dB; stop at
each step for 10 ms
10 IECOUT 28, "LEVEL 20uV; ATTEN:FIXED; LEVEL 2uV; LEVEL:VAR 0.2"
20 POR 1322212 7021.00
30 IECOUT 28, "INCREMENT:LEVEL*®
40 HOLD 10
50 NEXT I%
6) Modulation frequency (AF) and internal frequency modulation setting
IECOUT 28, “АР 12.5KHZ; FM:INT 40KHZ"
7) External amplitude modulation setting (AC coupling)
ТЕСОПТЯОВОРТАМТЕХФСАСФЭБЫ56
8) Storing complete instrument setting in memory location 45
ТЕСОШТР2ВЛ ЖСАУ 456
9) Switching off the modulation again
ТЕСООТ 28, "ЕМ:ОҒЕ AMORES
1062.5502.11 3.11 E-3
10) Reading current RF
10 IECTERM 10 (input terminator "new line")
20 IECOUT 28, "БЕ?"
30 IECIN 28, A$
40 PRINT А5
11) Recalling instrument setting stored in step 8)
IECOUT 28, FRCL 45%
3.3.6 Syntax of Setting Commands and Data Request Commands
(Programming Messages)
Command line
Number
— Meis — Exponent —
WSP (white space): One or several characters with ASCII code 0 to 9 or 11 to 32 decimal, especially space
Fig. 3-1 Syntax diagram of a command line (programming message)
Each command line must end with a terminator. Permissible terminators accepted by the SMY without
switchover are:
e New line (ASCII code 10 decimal)
e End (EOI line active) together with:
* thelast useful character of the command line, or
* thecharacter "New Line", or
* the semicolon (;)
1062.5502.11 3.12 E-3
Since the carriage return character (ASCII code 13 decimal) is permissible as ап ineffectual filler
before the terminator, also the combination of carriage return + new line is permissible.
A command line may require more than one line on the screen of the controller because it is only
limited by the terminator. Most IEC bus controllers automatically append the terminator to the useful
text.
Also, a command line may contain several commands (program message units) to be separated by
semicolons (;).
The possibility of abbreviation described in IEC 625-2/IEEE 488.2 with several commands in one line,
Example: :TEST:POINT 11; :TEST:VOLTAGE?
abbreviated as
:TEST:POINT 11; VOLTAGE?
is not possible with the SMY.
A command may consist of the following parts:
e Header only
Example: FM:OFF
e Header and question mark
Example: FM?
This combination requests the SMY to provide the required data in an output buffer in order to have
them transferred via the IEC bus as soon as the SMY has been addressed as a talker.
e Header and number
Example: FM 55ЕЗ or FM 55 kHz
Header and number are to be separated by at least one space (ASCII-Code 32 decimal). In the
case of device-specific commands, the number can be supplemented by a subsequent unit.
Lower-case letters are permissible, being equivalent to the corresponding upper-case letters. Thus,
units can be used in the usual form (e.g. dBm) instead of the upper-case notation (e.g. DBM), which is
permissible as well.
Additional spaces may be inserted at the following positions:
e before a header,
e between header and number,
e between mantissa and exponent of the number,
e between number and unit,
e before and after a comma (,) and semicolon (;),
e before the terminator.
1062.5502.11 3.13 E-3
Headers of device-specific commands
The headers are mostly identical with or similar to the respective key designation, which results in
easy-to-read (self-documenting) programs.
Two equivalent command notations are possible for special functions:
е Header 'SPECIAL FUNCTION' and special function code (as with manual operation)
Example: SPECIAL 1;
е Special commands with higher documentation value for each individual special function
Example: ATTENUATOR:FIXED,
Some special functions (two-tone modulation, level emf) have no meaning in IEC bus operation. The
appropriate settings are directly selected in the respective commands:
AM:DUAL:AC, FM:DUAL:DC, | PHM:DUAL, LEVEL:EMF
The headers can be abbreviated at will by omitting characters at the end (e.g.: LE or LEV instead of
LEVEL). The shortest-possible notations are shown in the command tables in bold print. However, so
as to obtain easy-to-read programs, the headers should not be shortened too much.
Many headers consist of several parts separated by colons (:) (e.g.: "ATTENUATOR:FIXED"). Each
part of the header may individually be abbreviated in this case (e.g.: "ATT:F"). According to IEEE
488.2 standard, these headers may also comprise a leading colon (e.g.: ":АТТ:Е") which, however,
does not influence the effects of the commands with the SMY.
Some headers include the underline character (ASCII code 95 decimal) to improve readability. It must
be written like the letters, but always lies in the range that can be omitted by abbreviation 1).
Numeric value
Only decimal values are allowed as numbers, the following notations being permissible:
e With or without polarity sign
e.g. 5, 45,-5
e With or without decimal point, any position of the decimal point being permissible.
e.g. 1.234, -100.5, .327
* With or without exponent to base 10, "E" or "e" are used as the exponent character.
e.g. .451, 451E-3, +4.51е-2
Note: Specification of the exponent alone (e.g.: E-3) is not permissible, 1E-3 is correct.
* The exponent is permissible with or without sign, additional spaces are also permissible.
e.g. 1.5E+3, 1.5E-3, 1.5E3
e Leading zeroes are permissible in mantissa and exponent.
e.g. +0001.5, -01.5E-03
1) The underline character is generated using the "<" key with R&S controllers PCA and PUC.
1062.5502.11 3.14 E-3
е The length of the number, including the exponent, may amount to up to 20 characters. The number
of digits of the mantissa and exponent is only limited by this condition. Digits which exceed the
resolution of the device are rounded up or down; they are always considered for the order of
magnitude (power of ten).
e.g. 150000000, 0.00000032
All setting commands that can be assigned a number are indicated in the number column in Table 3-1.
Unit
Device-specific setting commands permit to append a unit to the number (e.g.: 125.3 kHz or 125.3E3
Hz). The permissible units are listed in Table 3-1 (table of device-specific setting commands). They
can be written in lower-case or upper-case letters. If no unit is used, the default unit is valid, see Table
3-1.
3.3.7 Data Request and Syntax of the Messages Sent by the SMY to the
Controller (Response Messages)
The SMY transmits messages via the IEC bus if it:
1) has been requested by one or several 1) data requests with a question mark (query messages) to
provide data in its output buffer, and
2) indicates by setting bit 4 in the status byte (MAV - message available) that the required data are
now present in the output buffer (see also Section "Service Request and Status Register") and
3) has been addressed as a talker
(BASIC command "IECIN adr, stringvariable")
It must be noted that the command line with the data requests must be transmitted immediately before
the talker is addressed; the output buffer is cleared if a further command line is entered in between.
If the SMY is immediately addressed as a talker following the data request without observing point 2
above, the bus handshake is blocked until the requested data are available. This method is meaningful
with the SMY since only a few milliseconds are required to execute a data request (see the following
program example).
Program example:
Read current frequency (R&S BASIC; address of the SMY: 28).
10 IECTERM 10 Input terminator: new line
20 IECOUT 28, "HEADER:ON" Set messages with header
SOMLECOUTZ28 EFE Data request RF frequency
40 IECIN 28, Е5 Reading talker addressing and data
50 PRINT F$ RF frequency indicated on controller, e.g.: "RF 1000.000000E+6"
1) Several data requests must be within one command line if the SMY is to transmit all the relevant messages at a time.
1062.5502.11 3.15 E-3
The syntax of messages sent by the SMY is shown in Fig. 3-2. The syntax is similar to that for
commands received by the SMY.
Output message line
SP: Space (ASCII code 32 decimal)
ASCII text: Response to commands *IDN? and “ОРТ? (cf. Table 2-10)
Fig. 3-2 Syntax diagram of the messages sent by the SMY
* New line (ASCII code 10 decimal) together with End (EOI line active) is used as the terminator. It is
also possible to set Carriage return + new line + end (using command
TALK TERMINATOR:CR NL END).
* Commands "HEADER:ON" or "HEADER:OFF* can be used to select whether only the numbers or
the header and the numbers are to be transmitted.
The setting "Header and numbers" can also be selected by
» thecommand *RST (reset) or
> by switching on the operating voltage.
The setting "Header and numbers" enables the messages transmitted by the SMY to be retumed to the
SMY as unmodified commands. It is then possible to read a setting entered via the keyboard, store it in
the controller and repeat it later via the IEC bus.
*
If the SMY receives several data requests, it also returns several messages within one line which
are separated by semicolons (;).
Headers and numbers are always separated by a space.
The headers only consist of upper-case letters and the characters ":".
The syntax of the numeric values is described in Fig. 3-2. Only decimal numbers are transmitted.
The length of the numbers and examples for each message can be taken from Tables 3-2 and 3-3.
1062.5502.11 3.16 E-3
* Several numbers can be transmitted іп response to the commands SPECIAL FUNCTION? and
ERRORS?, which are separated by commas (,).
* The messages sent by the SMY contain no units. In the case of physical quantities, the numbers are
referred to the basic unit specified in Table 3.2.
3.3.8 Alternative Commands and Notations
To obtain a high degree of compatibility with regard to Rohde & Schwarz instruments of earlier
production dates, the SMY features alternative commands and also accepts notations of a different
syntax. The following table specifies both possibilities with the SMY, which are identical as to their
effect.
Table 3-5
Preferred notation Alternative notation
ues 0110 MM
*SAV value STORE value
HEADER: ‘OFF ae... 0
Unit |Unkperent РСТ ЕТТЕ” TT PCT
Write units as indicated in the command tables — — may be abbreviated like headers:
Hz, KHz, MHz, GHz, Pcr, V, Mv, Uv, DBM, DBUv, De,
RAD
Delimiter between commands: Comma (.)
semicolon (;)
Delimiter between header and numeric value: space No delimiter necessary
3.3.9 Multiple Settings
If several IEC-bus commands are sent in a line, they will be executed in the logically correct sequence,
but the modules are not activated until the end of the line when the shape of the output signal has been
determined. The modules are set in the optimal sequence with regard to the best possible overlapping
of the possible wait times, and the output signal switches to the desired state. This method avoids
signal interference and saves setting time.
The following example shows this (Rohde&Schwarz BASIC):
TEC-OUT=-287 ЕБ
IEC OUT 28, "LEVEL ODBM; RF 500MHZ; AM:EXT 50; FM:INT 50KHZ"
After the PRESET setting, the SMY next processes the entire line without affecting the output signal.
Contrary to the order in the command line, the synthesizer is set first due to its settling time (the
synthesizer's RF and FM are set at the same time). After the AF generator, the output section is set,
whereby the level correction for the changed frequency, the new level and the activated AM are taken
care of in one computer run.
1062.5502.11 3.17 E-3
The computing times for the AF generator and the output section, as well as the май times due to the
switching attenuator, overlap completely with the settling time of the synthesizer. The total setting time
corresponds to the setting time of the slowest parameter, which in this case is the RF.
In a similar way, the level of the instrument can be varied:
ТЕС OUT 28, "LEVEL 10DBM; ATTEN:FIX; LEVEL ODBM"
When this line has been processed, the SMY directly outputs a level of 0 dBm with non-interrupting
setting possibilities up to +10 dBm, without a level of 10 dBm first being present at the output.
If desired, the hardware setting can be forced in a command line with *wai or *opc.
1062.5502.11 3.18 E-3
3.4 Interface Messages
Interface messages (according to IEC 625-1 and IEEE 488 standard) are transmitted to the SMY on
the data lines with the attention line being active (Low).
3.4.1 Universal Commands
The universal commands are in the code range 10 to 1F hex. (see Table 3-8). They are effective,
without previous addressing, on all devices connected to the bus.
Table 3-6
BASIC command with
DCL IECDCL Aborts processing of commands just
(Device Clear) received and sets the command processing
software to a defined initial status.
Clears the output buffer
The device setting is not changed.
LLO IECLLO The LOC key is inhibited.
(Local Lockout)
IECSPE 1) Ready for Serial Poll.
xe Poll Enable)
SPD IECSPD 1) End of Serial Poll.
(Serial Poll Disable)
1) The BASIC command *IECSPL addr, status" contains the commands "IECSPE" and IECSPD*, additionally reads the status of the
device with address "адаг" and stores it in the integer variable “status”.
3.4.2 Addressed Commands
The addressed commands are in the code range 00 to OF hex. (Table 3-8). They only act on devices
addressed as Listeners (by the BASIC command "ЕСІ АП addr’).
Table 3-7
BASIC command with Effect on SMY
R&S controllers
IECSDC Aborts processing of commands just
received and sets the command processing
software to a defined initial status.
Clears the output buffer
The device setting is not changed.
GTL IECGTL Switchover to local status
(Go To Local) (manual operation).
dear Device Clear)
1062.5502.11 3.19 E-3
Table 3-8 ASCIVISO- and IEC character set
Interface message ("Take Control")
ASCII character ("Horizontal Tab")
Decimal
1062.5502.11 3.20 E-3
3.5 Service Request and Status Register
Fig. 3-3 shows the status registers and the links between them. In line with IEEE 488.2, the status byte
(STB) and its associated mask register (SRE), which are also present with older instruments, have
been supplemented by the event status register (ESR) and its mask register, event status enable
(ESE)
Power On
User Request
Command Error
Execution Error
Device-dependent Error
Query Error
Request Control
Operation Complete
иеле a Pe Te а [2 [ао] рн»
soñe] ef «fel 388
AND AND AND AND AND AND AND AND
Event Status
Bit number Enable
Significance МЕСЕ эша
| Output buffer | Output buffer
Serial Poll
PEL MAV
*STB?
EX ESE E E
uvis аны Г
АМО AND AND AND AND AND AND
Bit number ЕМУ Request
Significance| 128 Er
Fig. 3-3 Status registers
1062.5502.11 3.21 E-3
A bit is set to 1 іп the event status register (ESR) with certain events (е. 9. fault, ready message); see
Table 3-9.
These bits remain set until cleared by one of the following conditions:
* byreading the event status register (by command *ESR?)
* the command *CLS
* the power supply is switched on (the Power On bit is set afterwards, however).
Table 3-9 Meaning of the event status register
Power On
is set when the SMY is switched on or if the AC supply is restored after a failure.
User Request
The operator can set this bit by activating special function 19 in the local status via the keyboard and thus initiate a
Service Request with a corresponding setting of the mask registers. This function is useful if test sequences require
manual operation as well as control via the IEC bus.
Command Error
This is set if one of the following errors is detected during analysis of the received commands:
€ Syntax error (error 50),
Illegal unit (error 52),
Illegal header (error 53),
A number has been combined with a header for which a subsequent numerical value is not envisaged (error 50,
e. g. INCREMENT:RF 10 КН2).
In addition, the corresponding error code is displayed and stored internally just as when entering via the keyboard.
Execution Error
is set if one of the following errors has been detected during execution of the received commands
e A number is outside the permissible range (for the respective parameter) (error 51).
e The command AF: OFF has been sent although AM or FM/PHM was still switched on (error 54).
e A parameter is to be varied although it is not switched on (error 56).
e The FM deviation or the RF cannot be set because the FM deviation is too large for the selected RF (error 55).
Attention must be paid to the correct sequence if both the FM deviation and the RF are changed. This error may
briefly occur if the sequence is incorrect and if the deviation values are large and acceptance of a parameter
value is then prevented.
FM DC center frequency calibration was called without first switching on FM DC.
e Overrange/underrange settings (error 70 to 72 and 75 to 77, see Table 2-3). The setting is nevertheless
executed in these cases.
Device-dependent Error
is set
€ iffunction errors occur (errors 1 to 15, see Table 2-3) or
© ifthe external modulation signal is outside the tolerance range (Error 73 and 74).
Query Error
This bit is set:
e If the controller wishes to read data from the SMY but a data request (query message) has not been previously
output.
O |f the data present in the output buffer of the SMY have not been read out and a new command line has been
sent to the SMY instead. In this case the output buffer is cleared.
d e If the requested data exceed the capacity of the output buffer (approx. 200 characters).
Bit 1 Request Control
Not used in SMY.
Operation Complete
This bit is set by the command "ОРС" if all previous commands have been processed and executed.
1062.5502.11 3.22 E-3
Using the event status enable mask register (ESE), the user сап select the bits in the event status
register which also set the sum bit ESB (bit 5 in the status byte) through which a service request can be
triggered. The sum bit is only set if at least one bit in the ESR and the corresponding bit in the ESE are
set to 1. The sum bit is automatically cleared again if the above condition is no longer satisfied, e. g. if
the bits in the ESR have been cleared by reading the ESR or if the ESE has been changed.
The event status enable mask register is written by the command "*ESE value" ("value" is the contents
in decimal) and can be read again using the command *ESE?. It is set to zero when the power supply
is switched on if the Power On Clear flag is 1 (*PSC 1).
It is not changed by other commands or interface messages (DCL, SDC).
Only the following bits are used in the status byte (STB):
read.
MAV Message Available
The bit is O if the output buffer is empty.
EIE 7 RQS Request Service (read by Serial Poll)
MSS Master Status Summary (read by *STB?)
It should be noted that the bits of the status registers are numbered 0 to 7 in accordance with IEEE
488.2, but the bus data lines are designated DIO 1 to DIO 8.
Indicates that a message is present in the output buffer which can be
Using the service request enable mask register (SRE), the user can determine whether the RQS bit
of the status byte is also set when the МАУ or ESB bit switches from 0 to 1 and if a Service Request is
sent to the controller by activating the SRQ line. The following possibilities exist since each bit in the
service request enable mask register is assigned to the corresponding bit in the status byte:
Contents of | Bit no. set in
the SRE the SRE
(decimal)
No Service Request
Service Request when the MAV bit is set (message in output buffer)
Service Request when the ESB bit is set (at least 1 bit set in the event status register and not
masked)
Service Request in both of the above cases
The service request enable mask register (SRE) is written with the command "*SRE value" ("value" is
the contents in decimal) and can be read again using the command "*SRE?". It is set to zero when the
power supply is switched on if the Power On Clear flag is 1, and the Service Request function of the
SMY is thus inhibited. The SRE mask register is not changed by other commands or interface
messages (DCL, SDC).
Several devices can trigger a Service Request simultaneously, the open collector drivers cause an OR
function on the SRQ line. The controller must read the status bytes of the devices to identify which
device has triggered the Service Request. А set ROS bit (bit 6/DIO 7) indicates that the device is
transmitting a Service Request.
1062.5502.11 3.23 E-3
The status byte of the SMY can be read in the following manner:
*
By the command "*STB?"
MSS (Master Status Summary) is transferred as bit 6. MSS is 1 if at least 1 bit in the status byte is
set and the corresponding bit in the Service Request Enable mask register (SRE) is also set.
The contents of the status byte - including MSS bit - is output in decimal. It is, however, not possible
to detect a set MAV bit in this manner. The status byte is not modified by reading and a possibly
present Service Request is not cleared.
By a Serial Poll
(With R&S-BASIC: IECSPL adr, status.)
The contents is transferred in binary form as one byte. RQS is sent as bit 6 (Request Service). RQS
is set if the addressed device has caused the Service Request. The RQS bit is subsequently set to
zero and the Service Request becomes inactive, the other bits of the status byte are not changed.
When MSS is cleared, ROS is also cleared, e. g. by setting the Service Request Enable mask
register (SRE) to zero.
The status byte is cleared:
*
By *CLS at the start of a command line
At the start of a command line, the output buffer (and thus the MAV bit) is cleared. *CLS clears the
event status register (and thus the ESB bit). This again clears the MSS or RQS bit and the Service
Request message.
By handling the entries in the status byte
With the MAV bit set: By reading the contents of the output buffer (IECIN addr, AS)
With the ESB bit set: By reading the event status register (IECOUT адаг, "*ESR?"
IECIN аааг, ES)
This also clears the MSS or RQS bit in the status byte and the Service Request.
1062.5502.11 3.24 E-3
Program example:
(Rohde & Schwarz BASIC has been used; the IEC bus address of the SMY has been taken to be 28).
In the program example, a service request is triggered on detection of an error, the type of error being
determined from the event status register.
10 IECTERM 10
20 ON 5КО GOSUB 100
S0 MECOUT2 Cra *enS лю ON
& С for Service Request in the event of error
100
110
220
130
140
150
160
170
180
190
200
210
220
230
240
300
380
390
TECSPEFZE 5%
IF (5% AND 64) - 0 THEN
PE COU LZ Or meme ESR
ТЕСТЫ 28, БЕ
E% -VAL(ES)
IF (Е% AND 32) <>0 THEN
IF (Е% AND 16) <>0 THEN
IF (Е% AND 8) <>0 THEN
IF (ES AND 4) <>0 THEN
ON SRQ GOSUB 100
RETURN
REM Service Request not
ON 5КО GOSUB 100
RETURN
1062.5502.11
Input terminator: new line
ЖӨКЕ 32%
GOTO 300-------- SRQ not from SMY
Read Event Status Register
PRINT "COMMAND ERROR"
PRINT "EXECUTION ERROR")
PRINT "DEVICE-DEPENDENT ERROR"
PRINT "QUERY ERROR"
from SMY
3.25
E-3
3.6 Command Processing Sequence and Synchronization
The signal generator features a maximal transmission rate of 8300 characters/sec. for receiving data.
The commands received are first stored temporarily in an input buffer which can accomodate a
maximum of 81 to 121 characters. Once the terminator has been received, the commands are
processed in the sequence in which they were sent. During this time, the IEC bus can be used for
communication with other devices.
Command lines which exceed the capacity of the input buffer are processed in several parts. The bus
is occupied during this time.
Commands *OPC and *OPC? (Operation Complete) are used as feedback information indicating the
time when processing of the received commands is terminated and the output signal of the SMY has
settled on the new values:
> *OPC sets bit 0 in the event status register,
» *OPC? provides message 1 in the output buffer which sets bit 4 (MAV) in the status byte,
if all preceding commands have been completed.
If the service request enable register (SRE) (and the ESE for command “ОРС) are appropriately set,
both command *OPC and command *OPC? can trigger a service request.
Command *OPC? permits a more simplified method of synchronization, see the program example
outlined below!
These methods of synchronization are recommended if another device which requires the settled
signal of the SMY is to be requested to start a measurement via the IEC bus.
Following *WAI, the SMY does not process the new commands until all preceding commands have
been completely executed and the output signal of the SMY has exactly settled. Thus, overlapping
command execution, which may occur only in the following exceptional cases, can be avoided.
With the majority of the commands, no additonal settling time is required for the output signal following
command processing. The only exceptions are the switching of the mechanical attenuator initiated by
commands LEVEL, INCREMENT:LEVEL, DECREMENT:LEVEL, *RST, PRESET, “НСІ, RECALL, as
well as the switching on of the amplitude modulation (AM) and the switching over of the reference
frequency (REFERENCE. OSCILLATOR:INTERNAL/EXTERNAL).
When commands *OPC, *OPC? or *WAI are used, this additional settling time then required is
automatically taken into consideration.
1062.5502.11 3.26 E-3
Program example:
The program example shows an easy method of synchronization. The command *OPC? generates a
message as soon as the preceding commands have been executed and the output signal of the SMY
has settled. Since this message is to be read in line 30, the bus handshake is halted until the message
is available. (Rohde & Schwarz BASIC; address of the SMY: 28)
10 IECTERM 10 input terminator: new line
20 IECOUT 128, “RF 123 МНА ЕУ ТІ 50ВМ "ОРС?"
30 IECIN 28 AS A$ is not used further
40 REM The SMY has executed the
45 REM commands in line 20.
50 REM Its output signal can, e.g.,
55 REM Бе used for measurements.
3.7 Error Handling
Any errors detected by the SMY in connection with operation via the IEC bus are indicated by setting a
bit (bit 2, 4 or 5) in the event status register (see Table 3-9). Functional errors are signalled
correspondingly by setting bit 3. These bits remain set until the ESR is read or cleared by the
command *CLS. This is in line with the IEEE 488.2 standard and enables triggering of a service
request and program-controlled evaluation of the type of error (see program example as outlined at the
end of section 3.5).
More detailed information is contained in the error codes which, just like with manual operation, are
read out in the right-hand display. The display is overwritten by the next command and is therefore not
always visible with IEC bus operation. It is therefore possible to have these error codes read out via the
IEC bus using command 'ERRORS?'. If several errors are detected, the error codes are separated by
commas. Code ' 0' indicates that no errors are currently detected. Input errors (codes 50 to 57) are
cleared if a new command line is sent to the SMY. All other errors are indicated as long as the cause
for error has not been removed.
1062.5502.11 3.27 E-3
3.8 Resetting Device Functions
The following table comprises the various commands and events which reset individual device
functions.
Basic instrument setting
(s. Section "Preset")
Message from SMY:
setting *HEADER:ON',
talker terminator new line + end
Reset command processing and input
buffer
1 Yes, but "Service Request on Power Оп" is possible.
2) Yes if the command is at the beginning of a command line.
3.9 Local/Remote Switchover
The device is in the local mode (manual operation) when switched on.
If the SMY is addressed by a controller as a listener (by means of R & S BASIC commands IECOUT or
IECLAD), it enters the remote status (remote control) in line with the standard and remains in this
mode even after data transfer has been completed. This is indicated by the REMOTE-LED. Except for
the LOC/IEC ADD key, all control elements of the front panel are disabled.
There are two possibilities to return to local:
*
By the addressed command GTL (Go to Local) from the controller.
* By pressing the LOC/IEC ADD key. Data output from the controller to the SMY should be stopped
before pressing the LOC/IEC ADD key or the SMY will immediately enter the remote status again.
The function of the LOC/IEC ADD key can be inhibited from the controller by sending the universal
command LLO (Local Lockout).
The remaining device settings are not modified by a change in status from "remote" to "local" or vice
versa.
1062.5502.11 3.28 E-3
3.10 Interface Function
According to the IEC 625-1 standard, devices with remote control via the IEC bus can be equipped with
different interface functions. The table lists the interface functions which apply to the SMY.
Abbreviation according to Interface functions
IEC 625-1
Source Handshake
complete ability
Acceptor Handshake
complete ability
Listener function,
complete ability, unaddressing if MTA
Talker function,
complete ability,
ability to reply to serial poll,
unaddressing if MLA
Service Request
complete ability
Parallel Poll function,
not available
RL1 Remote/ocal switchover function
complete ability
DC1 Device Clear
complete ability
Device Trigger
not available
Controller function,
not available
1062.5502.11 3.29
E-3
3.11 IEC-Bus Connector and Bus Lines
The IEC bus connector is positioned at the rear panel of the instrument. The SMY is equipped with a
24-contact socket in compliance with the IEEE 488 standard.
r
r
КЕГЕ |
EE AA FET 1
[в [оеабыибку |
IATA]
БЕТЕП
EI
23
24
Ground (for DAV)
АТМ | 9 | Ground бог |
| | 24 — jlogegoud |
Fig. 3-4 Pin assignment
The standardized interface contains three groups of bus lines
1) Data bus with 8 lines DIO 1 to 0108.
Data transmission is bit-parallel and byte-serial and the characters can be transmitted in ISO 7-bit
code (ASCII code).
DIO 1 represents the least significant bit and DIO 8 the most significant bit.
2) Control bus with 5 lines.
This is used to transmit control functions:
ATN (Attention)
becomes active Low during transmission of addresses, universal commands or addressed
commands to the connected devices.
REN (Remote Enable)
enables device to be switched to remote control.
SRQ (Service Request)
enables a connected device to send a Service Request to the controller by activating this line.
IFC (Interface Clear)
is activated by the controller in order to set the IEC interfaces of the connected devices to a defined
initial status.
1062.5502.11 3.30 E-3
EOI (end or Identify)
can be used to identify the end of data transmission and is used with a parallel poll.
9
Handshake bus with 3 lines.
This is used to control the data transmission sequence.
NRFD (Not Ready For Data)
an active Low on this line signals to the talker/controller that one of the connected devices is not
ready to accept data.
DAV (Data Valid)
is activated by the talker/controller shortly after a new data byte has been applied to the data bus.
NDAC (Not Data Accepted)
is held at active Low by the connected device until the device has accepted the data present on the
data bus.
More detailed information, such as the data transmission timing, can be obtained from the IEC 625-1
standard.
1062.5502.11 3.31 E-3
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4 Maintenance and Troubleshooting
4.1 Maintenance
Under normal operating conditions, regular maintenance is not required. It may however be necessary
to replace the lithium battery if the battery voltage drops below a minimum value or to clean the
exterior of the instrument if it gets soiled.
4.1.1 Cleaning the Exterior of the Instrument
To clean the exterior of the instrument, use a soft, non-fraying dust cloth.
Attention! Never use solvents such as thinner, acetone or other similar substances, as they may
damage the lettering on the front panel and/or plastic components.
4.1.2 Storage
The storage temperature range of the instrument is -40 to +70 °С. If the instrument is to be stored for
any length of time, protect it from dust.
4.1.3 Replacing the Lithium Battery
Warning: The battery used in the instrument is а heavy-duty lithium cell. Do not short-circuit or
charge the battery, as these actions may cause the battery to explode. Do not open
dead cells; they should be handled as toxic waste and disposed of properly.
The instrument contains a lithium battery, which allows data to be retained in CMOS RAM. It is located
on the processor board. The service life of the battery depends on operation time and environmental
temperature; it is typically five years. If the battery voltage drops below a minimum value, the saved
data (e.g. STO/RCL, SEQ) will be lost. In this case, replace the lithium cell.
Note: All saved data is lost when a battery is replaced. This is also true for the calibration
tables. If the battery voltage has dropped below the minimum value, or if the battery
was replaced, you must execute all calibration routines again.
Open the instrument ө Turn instrument off and disconnect power cable from mains
e Remove fastening screws
e Disconnect all cables to the processor module
e Remove module cover
Replace the battery e Remove the cable tie securing the battery
e Unsolder battery at X108/X109
e Solder new battery in place
Attention! Make sure that the polarity is correct when soldering
battery in place.
e Secure battery with a new cable tie
1062.5502.11 4.1 E-3
Close the instrument % Тосіове the instrument, perform the steps for opening the instrument іп
reverse order
4.2 Function Check (Self-test)
4.2.1 Self-test
The instrument performs a self-test after being switched on and while it is in operation. The contents of
ROM are checked during the power-up process. The RAM contents are checked when memory is
accessed. The most important instrument functions are automatically monitored during operation.
If an error is detected, the status LED will flash. After the status key has been pressed, the status code
is shown in the modulation display and the indicator "Err." is shown in the amplitude display:
AMPLITUDE . ER i: MODULATION : y
The status codes of errors are listed in chapter 2.23, table 2-3.
If necessary, the individual diagnostic test points can be directly accessed (see the service manual).
4.2.2 Calibration
By drastic changes in operating temperature, or after replacing a module or the lithium battery, it is
necessary to call the internal calibration routines. To do this, use the special functions (see chapter
2.21). Only the level correction calibration requires an external measuring instrument.
1062.5502.11 4.2 E-3
E
(Ағалы ھن لی رم Қз rut a
i
5 Testing the Rated Specifications
5.1 Required Measuring Equipment and Accessories
Table 5-1
Instru t R&S ord Use desc
Frequency counter Range 10 Hz to 1040 MHz (2080 MHz for SMYO2) included in 522
Resolution 1 Hz item 2 5.2.3
5.2.14
RF analyzer Range 0.1 to 1040 MHz (2080 MHz for SMYO2) FSB
Crystal stabilized, 848.0020.52
dynamic range 90 dB
ET Range 0.1 to 1040 MHz (2080 MHz for SMYO2) NRVS
Power up to 20 mW, 1020.1809.02
Z 2 50 О, error < 0.1 dB NRVS-Z51
Precision attenuation set Range » 500 MHz DPSP
Attenuation 0 to 120 dB 334.6010.02
resolution « 0.02 dB 857.9004.02
7-500
Controller IEC 625-1 interface PSA15
1012.1003.03
Test generator Range up to 1040 MHz (2080 MHz for SMYO2) SMHU
Low noise 835.8011.58
7 SWR bridge Range up to 1040 MHz (2080 MHz for SMYO2) ZRB2
2=500 373.9017.53
НЕ analyzer Range up to 2.8 GHz FSB
Dynamic range » 40 dB 848.0020.52
Range up to 1040 MHz (2080 MHz for SMYO2)
Ring modulator,
standard level
Lowpass filter Z = 50 О for f > 200 kHz
200 kHz
Instrument amplifier Range 1 to 20 kHz
Gain 20 dB,
inherent noise « 5 nV/1 Hz
AF analyzer UPD 5.2.11
1030.7500.02
о ТІПІЛІКГІ ASA кс аш
test bandwidth
Adjustable lowpass filter Half octave intervals
30 to 1360 MHz
Range up to 20 kHz
Sensitivity < 3 рМ
Rin »10kQ
Residual FM at 250 MHz
« 1 Hz (CCITT)
« 2 Hz (30 Hz to 20 kHz)
Deviation meter Range up to 2080 MHz FMB
856.5005.52
1062.5502.11 5.1 E-3
SMY02) 334.2015.54
AM, FM, фМ, error < 1% FAM-B2
17 AF generator Frequency range up to 100 kHz AFG 5.2.15
Frequency response « 0.01 dB 377.2100.02 5.2.18
5.2.24
AF voltmeter Frequency range up to 100 kHz
Frequency response « 0.01 dB
334.4918.02
Distortion meter Frequency range up to 100 kHz dine in 5.2.14
Resolution < 0.05% : 5.2.17
Use described
|е) кете | Required specifications R&S order no. тазда А
ЕАМ-В8
334.5714.02
Power signal generator | Level 30 dBm up to 1040 MHz (2080 MHz for SMYO2) SMGL
1020.2005.52
RF peak-value rectifier | Frequency range
0.1 to 1040 MHz (2080 MHz for SMYO2)
50 Q, frequency response < 1 dB
Modulation analyzer Frequency range up to 1040 MHz (2080 MHz for | FAM
FMB (for SMYO2)
5.2 Test Procedure
5.2.1 Display and Keyboard
The special function "Display Test" (called up via SPECIAL 31) carries out a test of the displays. All
displays are lit up.
The keys are tested by pressing them and their function checked against the display.
5.2.2 Frequency Setting
SMY setting: Unmodulated, level 0 dBm
Test setup:
10 MHz, 0.1V
Ref.
Frequency counter
Input
RF output
Synchronize reference frequency from SMY and from frequency counter.
1062.5502.11 5,2 E-3
Тез: Set the following frequencies on the SMY and check using the frequency
counter.
10 MHz 150 MHz 2000 MHz (for SMYO2)
60 MHz 450 MHz
90 MHz 1000 MHz
The values on the counter must not deviate by more than + 1 Hz.
5.2.3 Reference Frequency
» Allow at least one hour for the instrument to warm up.
> Connect a calibrated frequency counter to output REF FREQ 10MHz (rear panel).
The relative frequency error must not exceed (after 30 days of operation)
1 - 10-5/уеаг + 2 · 10-6 with the standard design
1 - 10°%day + 5 · 10-8 with the option SMY-B1 Reference Oscillator, OCXO
in the rated temperature range.
5.2.4 Settling Time
A crystal stabilized RF analyzer with a storage CRT which can be externally triggered by positive TTL
edges is required to measure the settling time. The transient is made visible by edge demodulation
with a 0-Hz span. Using a controller, two frequencies аге set alternately on the SMY via the IEC bus.
The controller should only activate the EOI line with the last data byte and must not otherwise send a
terminator. The analyzer is adjusted such that one of the two frequencies lies on a filter edge. If the
analyzer is triggered by the positive edge of the EOI signal, the transient appears on the CRT following
the last character of the IEC-bus transmission.
Test setup:
Test:
1062.5502.11
Controller
EOI
REF. FREQ. 10 MHz
trigger
RF
Synchronize reference frequency from the SMY and the RF analyzer. Connect
the IEC bus and the RF line. Connect the EOI line (pin 5 on the IEC-bus
connector) to the external trigger input of the analyzer. Set the SMY to 0 dBm
and to the end value of the frequency jump to be measured. Set the reference
level to -5 dBm on the analyzer, the amplitude scale to 1 dB/div, the resolution
bandwidths to 1 kHz and the span to 3 kHz. Increase the centre frequency until
the filter edge passes through the centre point of the CRT. The span can now
be reduced to 0 Hz and the scale calibrated on the CRT using frequency steps
of 100 Hz. The transient response appears on the CRT if the test program is
now started and the analyzer switched to external triggering. The settling time
(period up to final frequency 1 : 1077) must be < 60 ms.
Test program:
5.2.5
SMY setting:
Test setup:
Test:
5.2.6
SMY setting:
Setting of precision
attenuation set:
Test receiver setting:
Test setup:
1062.5502.11
Settling time
10 IECTERM 1
20 IECDCL : HOLD 500
30 IECOUT27, "LEV ODBM*
40 INPUT "STARTFREQUENZ IN MHZ";
50 INPUT "STOPPFREQUENZ IN MHZ";
60) LECOUT2Z7 MIRES El See MZ
70 HOLD 200
80 IECOUT27, "КЕ" + Е25 + "MHZ"
90 INPUT "WIEDERHOLUNG"; WS
LOO лас Wiss = Cale
110 СОТО 40
Output Level
THEN 60
Unmodulated, level 0 dBm,
frequencies 9 kHz to 1040 MHz (2080 MHz for SMYO2)
Connect power meter to RF output.
The frequency response must not fall below 1 dB.
Attenuation Set
Unmodulated, 100 MHz, 13 dBm
120 dB attenuation
100 MHz, -10 dBuV, linear, mean value,
bandwidth 7.5 kHz
Precision
attenuation set
Ғ15
F2$
Ensure that the cable connections are RF tight.
5.4
Test receiver
E-3
Test:
The nominal attenuation values according to the performance test report must
be taken into acount.
» Note the level displayed on the test receiver as the reference value
(approx. 0 dBuV).
> Repeat the measurement with the settings shown in Table 5-2.
» The difference from the reference value must not exceed 1 dB.
Table 5-2
SMY level Attenuation of the precision
dBm attenuation set
5.2.7 Non-interrupting Level Setting
SMY setting:
Test setup:
Test:
Unmodulated, 100 MHz, 0.1 dBm
Level VAR STEP 2 dB,
special function "Non-interrupting level setting"
Connect power meter to RF output.
Calibrate the power meter to O dB (for relative level measurements) or note the
absolute level. Reduce the level on the SMY in 2-dB steps using the STEP key
and check the level jumps on the power meter.
The permissible deviation is + 0.2 dB for all settings.
5.2.8 Output Reflection Coefficient
SMY setting:
RF generator
setting:
1062.5502.11
Frequency 5 to 1040 MHz (2080 MHz for 5МҮ02), unmodulated,
level 0 dBm
Frequency f [SMY] - 100 Hz, unmodulated,
level 13 dBm
RF analyzer
setting:
Test setup:
Test:
5.2.9
SMY setting:
Test setup:
Test:
1062.5502.11
Center frequency f [SMY]
RES BW = Video BW 10 kHz
Span 0 Hz
Sweep Time 30 ms
Scale linear
RF analyzer
» Open the connection between the SMY and the SWR bridge; leave the input
of the bridge open.
» Use the RF analyzer to measure the level of the RF generator signal
reflected at the open input of the SWR bridge and note the result (reference
level).
» Connect the SMY output with the SWR bridge and reduce the level of the RF
generator to minimum. The 50-Q output impedance of the RF generator
must be maintained. If necessary, terminate the SWR bridge with 50 Q.
» Set the SMY output level such that the reference level measured above is
obtained on the RF analyzer. With output levels « 0.1 dBm, use a bridge
with a lower transmission loss.
> Set level of 13 dBm on the RF generator and determine V mex and V min of the
ripple indicated on the RF analyzer.
VSWR = mx
V min
The ripple must not exceed 1.5. An upper limit value of 1.8 is valid with
frequencies > 1040 MHZ.
Harmonics
Unmodulated, level 10 dBm,
frequency 9 kHz to 1040 MHz (2080 MHz for SMY02)
Connect RF analyzer to the RF output of the SMY.
Sweep through the output frequency of 9 kHz to 1040 MHz (2080 MHz for
SMY02) and check the harmonics on the RF analyzer. The harmonic level
must not exceed -30 dBc. Ensure that the RF analyzer is not overloaded.
5.6 E-3
5.2.10 Spurious
SMY setting:
Test setup:
Test:
Unmodulated, level 0.1 dBm,
frequency 100 kHz to 1000 MHz
Connect RF analyzer to the RF output.
The spurious suppression is preferably tested at the following frequencies:
Table 5-3
SMY frequency Search frequency Spurious suppression
640 MHz
64.999999 MHz 705 MHz « -70 dBc
75 MHz
544.03 MHz
640 MHz
992.058 MHz
1024.07 MHz
544.08 MHz
640.005 MHz
992.03 MHz
1024.02 MHz
5.2.11 SSB Phase Noise
In order to measure the SSB phase noise, the output signal of the SMY is down-converted with a signal
of the same frequency from a reference signal generator. The carrier is then rejected and the noise
spectrum converted to a low frequency. This low-frequency noise spectrum can be measured using an
AF spectrum analyzer.
SMY setting:
Reference generator:
Oscilloscope:
AF analyzer:
Test setup:
1062.5502.11
Unmodulated, level 0 dBm,
frequency 64 / 100 / 779 / 1040 MHz (and 2080 MHz for SMYO2)
Unmodulated, level 7 dBm,
frequency analog to SMY setting
DC, 0.1 V/div, triggering AUTO
Bandwidth 1 kHz, 5 kHz/div
REF
amplifier
Synchronize the reference frequencies from the SMY and the reference signal
generator.
5.7 E-3
> Set SMY to 65.02 MHz. Read the reference value on the AF analyzer а!
Test:
20 kHz.
» Set SMY to 65 MHz. Set a beat of 1 Hz using a step of 1 Hz upwards or
downwards from the reference generator setting and stop the beat with a
single step at the zero point on the oscilloscope (+ 50 mV). This sets the two
input signals of the mixer in the phase quadrature.
» Read the noise level on the analyzer at 20 kHz and convert to a 1-Hz
bandwidth (if e.g. a bandwidth of 1 kHz is used for the measrement, 30 dB
must be subtracted from the measured noise level). Take into account the
form factor in the case of analyzers with mean-value rectification.
» The SSB phase noise is calculated as follows:
Example
Measured noise level -118 dBm
(1-Hz bandwidth)
Minus reference level -(+12 dBm)
Minus 6 dB because 2 side -6 dB
bands are measured
=136 dBc
» Repeat the measurement at 100 MHz, 779 MHz, 1040 MHz (and 2080 MHz for
SMYO2) |
The following values of SSB phase noise must not be exceeded:
Table 5-4
muc
20 kHz from carrier
64 MHz
100 MHz
779 MHz
1040 MHz
2080 MHz for SMYO2
Note: This measurement takes into consideration the SSB phase noise of both generators. The
reference signal generator must therefore be at least 10 dB better than the SMY in order
to achieve an exact measurement.
1062.5502.11 5.8 E-3
5.2.12
Broadband Noise
The carrier of the SMY is attenuated using a filter in order to measure the broadband noise using an
RF analyzer.
SMY setting:
Test setup:
Test:
5.2.13
SMY setting:
Test setup:
Test:
1062.5502.11
Residual FM
Unmodulated, level 0.1 dBm,
frequency 100 kHz to 1000 MHz
Selectable
> Set the lowpass filter such that the SMY carrier is attenuated by at least
20 dB.
» Set the analyzer as sensitive as possible (no pre-attenuation). Measure the
noise level in the passband of the filter and convert to a 1-Hz bandwidth.
This level, referred to 0.1 dBm, is the broadband noise level.
The broadband noise level must not exceed -140 dBc.
Unmodulated, level 0 dBm,
frequency 520.000001 to 1040 MHz (2080 MHz for SMYO2)
Modulation
ME Analyzer
Measure the residual FM with a CCITT weighting filter or unweighted (30 Hz to
20 kHz) and an RMS rectifier.
In the given frequency range, the residual FM must not exceed 10 Hz with
CCITT weighting filter or 20 Hz unweighted.
Possible test frequencies: 600, 800 and 1000 MHz.
The inherent residual FM of the modulation analyzer must be taken into
account by calibration.
5.9 E-3
5.2.14 Modulation Generator
SMY setting: AF 10 Hz to 500 kHz
Test setup:
Frequency counter
Distortion meter
Test: Vary the frequency of the modulation generator from 10 Hz to 500 kHz and
measure the level, frequency and distortion.
The level at 1 kHz must be 1 V + 1%.
Frequency response: < 0.2 dB up to 50 kHz
« 0.3 dB up to 100 kHz
The frequency error must not exceed 5 · 1075,
The distortion at 1 kHz must not exceed 0.1%.
5.2.15 Function Test of the External Modulation Level Monitoring
SMY setting: Level 0 dBm, а) FM EXT 50 kHz
b) AM EXT 80%
Test setup: Apply a modulation signal of 1 kHz to the modulation input "ЕМ/ФМ EXT” (test
a) or "AM EXT" (test b).
Test: EXT LOW must light up in the modulation display with an input level of 0.97 V.
EXT HIGH must light up in the modulation display with an input level of 1.03 V.
Neither EXT LOW nor EXT HIGH is to light up with an input level of 0.99 to
1.01 V.
5.2.16 AM Modulation Depth
SMY setting: Level 0.1 dBm, frequency 0.1 to 1040 MHz (2080 MHz for SMYO2)
AM INT 0.5 to 80%, AF 1 kHz
Test setup: Connect modulation analyzer to RF output.
Test: The deviation of the modulation depth from a set value must not exceed 4% of
the display +1% (absolute).
1062.5502.11 5.10 E-3
5.2.17 AM Distortion
SMY setting:
Test setup:
Test:
Level 0.1 dBm, frequency 0.1 to 1040 MHz (2080 MHz for SMYO2)
AM INT 30% (80%), AF 1 kHz
Connect modulation analyzer with distortion meter to RF output.
The distortion must not exceed 196 with 30% AM.
The distortion must not exceed 296 with 8096 AM.
5.2.18 AM Frequency Response
SMY setting:
Test setup:
Test:
5.2.19 AM DC
SMY setting:
Test setup:
Test:
Level 0 dBm, frequency 0.1 to 1040 MHz (2080 MHz for SMYO2),
AM EXT 60%
Set a level of 1 V on the AF generator and vary the frequency from 10 Hz to
50 kHz.
The modulation frequency response up to 10 kHz must not exceed 0.4 dB.
The modulation frequency response up to 50 kHz must not exceed 3 dB.
Level 0 dBm, frequency 1000 MHz, AM EXT 10096
Connect RF analyzer to RF output of SMY.
А DC voltage of +1 V applied to the AM modulation input must increase the RF
level by 5.5 to 6.5 dB.
A voltage of -1 V must result in an attenuation of at least 30 dB.
5.2.20 Residual AM
SMY setting:
Test setup:
Test:
1062.5502.11
Unmodulated, level 13 dBm,
frequency 0.1 to 1040 MHz (2080 MHz for SMYO2)
Connect RF peak-value rectifier to SMY output. Connect RMS voltmeter with
20-kHz lowpass filter connected before to the output of the rectifier.
The RMS value of the measured voltage must not exceed 200 pV.
5.2.21
SMY setting:
Test setup:
Test:
5.2.22
SMY setting:
Test setup:
Test:
5.2.23
SMY setting:
Test setup:
Test:
5.2.24
SMY setting:
Test setup:
Test:
1062.5502.1
Incidental ФМ at AM
Level 0 dBm, frequency 4 to 1040 MHz (2080 MHz for 5МҮ02),
AM INT 30%, AF 1 kHz
Connect modulation analyzer to RF output.
Measure the phase modulation produced at various carrier frequencies.
Permissible incidental ФМ < 0.2 rad.
FM Deviation Setting
Call special function 41 and special function 43,
level 0 dBm, frequency 100 MHz,
FM INT 1 to 100 kHz, AF 1 kHz
Connect modulation analyzer to RF output.
Measure the FM deviation at the following deviation settings:
1 kHz, 10 kHz, 100 kHz, 1 MHz, 10 MHz
The deviation from the set value must not exceed 3%.
FM Distortion
Level 0 dBm, frequency 100 MHz,
FM INT 50 kHz, AF 1 kHz
Connect modulation analyzer with distortion meter to the RF output of the
SMY.
The FM distortion must not exceed 0.3%.
FM Frequency Response
Level 0 dBm, frequency 100 MHz,
FM EXT 100 kHz
Connect AF generator to modulation input. Connect calibrated modulation
analyzer to RF output.
Set a level of 1 V on the AF generator and vary the frequency from 10 Hz to
2 MHz. The modulation frequency response must not exceed 3 dB.
1 5.12 E-3
5.2.25 Incidental АМ at FM
SMY setting:
Test setup:
Test:
Level 0 dBm, frequency 0.1 to 1040 MHz (2080 MHz for SMYO2)
FM INT 40 kHz, AF 1 kHz
Connect RF peak-value rectifier to SMY output. Connect RMS voltmeter with
20-kHz lowpass filter connected before to the output of the rectifier.
The RMS value of the measured voltage must not exceed 224 pV.
5.2.26 Stereo Modulation
SMY setting:
Test setup:
Test:
Call special function 41 and special function 43,
level 0 dBm, frequency 93 and 108 MHz,
FM external DC, FM deviation 40 kHz
Connect stereo coder to the FM/@M connector.
Pilot tone 6.75 kHz, AF = 1 kHz.
Connect FMB to RF output.
The cross-talk attenuation must not fall below 50 dB. The signal-to-noise ratio
must be better than 70 dB, the unweighted signal-to-noise ratio better than
76 dB.
The distortion must not exceed 0.396.
5.2.27 PM Deviation Setting
SMY setting:
Test setup:
Test:
Call special function 41 and special function 43,
level 0 dBm, frequency 100 MHz,
PM INT 10.0 rad, AF 1 kHz
Connect spectrum analyzer to RF output.
FM demodulator (the FM demodulator is used due to the higher FM accuracy
of the FMB).
The FM deviation must be 10 kHz at the chosen setting. A phase deviation
error of 596 corresponds to a deviation of 500 Hz from the nominal value.
5.2.28 PM Distortion
SMY setting:
Test setup:
Test:
1062.5502.11
Level 0 dBm, frequency 100 MHz,
PM INT 12.5 rad, AF 1 kHz
Connect modulation analyzer to RF output.
The distortion must not exceed 0.5%.
5.13 E-3
5.2.29 PM Frequency Response
SMY setting:
Test setup:
Test:
Level 0 dBm, frequency 100 MHz,
PM INT 12.5 rad, AF 20 Hz to 20 kHz
Connect modulation analyzer to RF output.
The modulation frequency response up to 20 kHz must be less than 3 dB.
5.2.30 Overvoltage Protection
SMY setting:
Test setup 1:
Test:
Test setup 2:
Test:
1062.5502.11
Unmodulated, level -117 dBm, frequency 100 MHz
Connect a regulated power supply unit to the RF output of the SMY via a 50-Q
resistor.
Apply a DC voltage to the RF output. The overvoltage protection must trip at a
voltage of 5 + 0.5 V with SMYO1 and 10 + 1.0 V with SMYO2.
Connect a power signal generator with an RF power output of 0.5 to 2 W to the
RF output of the SMY.
Apply a frequency of 25 to 1040 MHz (2080 MHz for 5МҮ02) to the RF output.
The overvoltage protection must trip at an RF power of 0.5 to 1 W.
5.14 E-3
Facsir
То:
Company:
Phone:
Fax:
First Page i:
Dear Mr Hakluytt,
i have now received the new 3
5.2.30 Overvoltage Protection
SMY setting:
[est setup 1:
Test:
of 6 t£ 1 V.
lest Setup 2:
dutput of Ine Stay
Apply a OC voltage to
zb
= 811427
REDE со CK LTD
BOMDERSCHWARZ
Ancells Business Park,
Fleet, Hampshire
GU13 SUZ
ENGLAND
Mr Phil Hakluytt
Assessment Services
01322-443422
Gordon Leiser
Services Department
(01252) 811484
(21252) 811447
МҰ overvoliage protection procedure :-
Unmoduiated, levei -117 dem, freauency 100 MHz
Connect a regulated power supply unit io the RF output of the SMY.
the RF output. The overvoltage protection must trip at a voltage
Connect а power signal generator with an КЕ power outout of 0,1 to 1,2 W to the КЕ
Apply a frequency of 25 to 1040 MHz (2080 MHz for SMYO2) to the RF output. The
Әуегуойаде protection must trip at an RF power of 0.3 to 0,7 W for SMYO2 and 0,5 to
LIW for SMYS14.
If you have any rnore questions please do not hesitate to contact те.
Best Regards,
Gordon Leiper
Wool
5.3 Performance Test Report
ROHDE & SCHWARZ Date: ео
SIGNAL GENERATOR SMY 01/02 Матео ee
Order No. 1062.5502.11/.12
SER...
Characteristic Measure as
іп section
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SEA Бел жар жөке ee ВВК. UNT
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Output level
test level 0 dBm
frequency response
[s |мәчаю seterr | 626 |
Non-interrupting level variation
Error at -2 dB
-4 dB
-6 dB
-8 dB
-10 dB
Output reflection coefficient
VSWR at < 1040 MHz
» 1040 MHz
Spurious
at 64.999999 MHz
544.08 MHz
640.005 MHz
992.03 MHz
1024.02 MHz
SSB phase noise at 20 kHz from carrier
at64 MHz
100 MHz
779 MHz
1040 MHz
2080 MHz for SMYO2
f > 65 MHz
f « 65 MHz
Residual FM, CCITT, RMS
520 MHz « f « 1040 MHz
Broadband noise
Residual FM
(30 Hz to 20 kHz)
1040 MHz « f « 2080 MHz
AF Synthesizer
Level error at 1 kHz
Frequency error
1062.5502.11 5.15
E-3
БЯ Characteristic
AF synthesizer distortion
at 1 kHz
Ext modulation voltage window
AM modulation depth
at 1 MHz m = 30%
m = 80%
10 MHz m = 30%
m = 80%
100 MHz m = 30%
m = 80%
1000 MHz m = 30%
m = 80%
at 1 MHz
10 MHz
100 MHz
1000 MHz
at 1 MHz
10 MHz
100 MHz
1000 MHz
AM frequency response
up to 10 kHz
up to 50 kHz
FM deviation setting
at 1 kHz
3 kHz
10 kHz
30 kHz
100 kHz
FM distortion
FM frequency response
20 Hz to 100 kHz
10 Hz to 2 MHz
1062.5502.11 5.16
E-3
Characteristic Measure as
in section
Stereo modulation
Cross-talk attenuation 50 dB
Signalto-noise ratio 70 dB
Unweighted signal-to-noise ratio 76 dB
Distortion 0.3 96
[A PROCURE NONU era a ШЕКЕ БЕЙ ИЛИ
Modulation frequency response =
20 Hz to 20 kHz
Response threshold of overvoltage protection
for RF
for DC
E
1062.5502.11 5.17
E-3
4
іпдех
А
Adaption of the power supply 1.1
Addressed commands 3.19
AF INT output 2.2; 2.12
ALC bandwidth 2.13
AM
DC 5.11
distortion 5.11
frequency response 5.11
AM EXT input 2.2; 2.18
Amplitude
display 2.7
modulation 2.13
ASCIIASO and IEC character set 3.20
Attention line
HIGH 3.2
LOW 3.19
B
Battery 4.1
BLANK 2.3; 2.15
Broadband noise 5.9
с
Calibration 4.2
Changing
modes (local/remote) 3.28
parameter units 2.6
Character set, ASCIIASO and IEC 3.20
Cleaning the exterior of the instrument 4.1
Command processing (IEC-bus) 3.26
Common Commands 3.9
Common Queries 3.10
Correcting an entry 2.6
D
DATA ENTER/UNITS keypad 2.2; 2.5
Data request 3.15
Data request commands
device-independent 3.10
device-specific 3.6
for error handling 3.27
syntax 3.12
Deviation
FM 2.15
PM 2.17
Device functions, resetting 3.28
Device messages
device-independent data request commands 3.10
device-independent setting commands 3.9
device-specific data request commands 3.6
device-specific setting commands 3.2
notation 3.2; 3.17
syntax: controller to SMY 3.12
syntax: SMY to controller 3.15
Display
AMPLITUDE 2.7
FREQUENCY 2.7
MODULATION 2.7
testing the 5.2
Displaying active special functions 2.22
1062.5502.11
E
Error handling (IEC-bus) 3.27
ERRORS? (device-specific data request commands) 3.27
ESE 3.23
ESR 3.22
Event status enable register 3.23
Event status register 3.22
Exchanging the power fuse 1.1
External reference 2.9
F
FM
deviation setting 5.12
distortion 5.12
frequency response 5.12
FM/gM EXT input 2.2; 2.18
Frequency
accuracy 5.2
display 2.7
modulation 2.15
Frequency (RF) 2.10
Front view 2.2
Function errors 2.8
H
Harmonic level 5.6
HIGH indication in the modulation display 2.18
|
IEC-bus
address 2.9; 2.29; 3.1
bus lines 3.30
command processing 3.26
connector 3.30
eror handling 3.27
synchronization 3.26
Incidental AM at FM 5.13
Incidental ФМ at AM 5.12
Input
AM EXT 2.2; 2.18
BLANK 2.3; 2.15
errors 2.8
FMo/M EXT 2.2; 2.18
resistance 2.18
SEQ 2.3; 2.21
Installing option SMY-B1 1.2
Instrument preset 2.8
Instrument settings
recalling 2.8; 2.20; 2.21
storing 2.8; 2.20
Interface
functions 3.29
messages 3.19
Internal
AF modulation frequency 2.12
reference 2.9
$^
LEVEL 2.10
LOCAEC ADD 2.2; 2.29; 3.1
PRESET 2.2; 2.8; 2.28
RCL 2.2; 2.20
SEQ 2.2; 2.21 step size 2.20
SPEC 2.2 switching on and off 2.5
STATUS 2.2; 2.8; 2.22 varying 2.8; 2.19
STEP 2.4; 2.20 Phase modulation 2.17
STO 2.2; 2.20 PM
deviation setting 5.13
DATA ENTER/UNITS 2.2; 2.5 distortion 5.13
MEMORY 2.2; 2.8 frequency response 5.14
PARAMETER ON/OFF 2.2; 2.4 Power
testing the 5.2 fuses 1.1
supply 1.1
Preparation for use 1.1
L PRESET 2.2; 2.8; 2.9; 2.28
LED Pulse modulation 2.15
REMOTE 2.2; 3.1 Putting into operation 1.1
STATUS 2.2; 2.8; 2.22
Level 2.10
blanking 2.15
EMF 2.12 R
monitoring 5.10 Rack adapter ZZA-93 1.1
LEVEL key 2.10 RCL (Recall) 2.2; 2.20
Lithium battery 4.1 Rear view 2.3
(ОСЛЕС ADD 2.2; 2.29; 3.1 REF FREQ 10MHz output 2.3; 2.9
Local mode 3.28 Reference frequency 2.9; 5.3
LOW indication in the modulation display 2.18 Remote
LED 2.2; 3.1
mode 3.1; 3.28
Replacing the lithium battery 4.1
M Resetting device functions 3.28
Maintenance 4.1 Residual AM 5.11
Memory Residual FM 5.9
error 2.9 RF
location О 2.21 frequency response 5.4
MEMORY keypad 22; 2.8 output 22
Modulation setüng the 2.10
AM 2.13 Rotary knob 2.8; 2.19
depth 2.13; 5.10
display 2.7
FM 2.15
generator 5.10 S
phase 2.17 i Self-test 2.9; 2.25; 4.2
pulse 2.15 SEQ
stereo 5.13 input 2.3; 2.21
two-tone 2.18 key 2.2; 2.21
with an extemal source 2.18 Sequences of instrument settings, recalling 2.21
Mounting the SMY into a 19° rack 1.1 Service request 3.21
Service request enable register 3.23
Setting commands
device-independent 3.9
N device-specific 3.2
Non-interrupting level setting 2.11; 5.5 syntax 3.12
Notation of device messages 3.2; 3.17 Settling time 5.3
Numerical entry of a parameter 2.5 SMY-B1 12
SPEC key 22
Special functions 2.22; 2.23; 2.24; 2.26
O Spurious suppression 5.7
Р SRE 3.23
Option SMY-B1 1.2 SSB phase noise 5.7
Output Status
AF INT 2.2; 2.12 byte 3.23
REF FREQ 10MHz 2.3; 2.9 codes 2.25; 2.26; 2.27
RF22 messages 2.8; 2.25
Output reflexion 5.5 register 3.21; 3.22; 3.23
Overrange/underrange settings 2.8 STATUS LED and key 2.2; 2.8; 2.22
Overvoltage protection 5.14 STB 323
STEP 2.4; 2.20
Step size of a parameter 2.20
STO (Store) 2.2; 2.20
E ON/OFF ; Speg 1
рыша keypad 2.2; 2.4 Storage temperature range 4.1
ies its 26 Store - recall 2.8
gng uns =. Synchronization (IEC-bus) 3.26
entering a value 2.5
lecting 2.4 Syntax of device messages
1062.5502.11 12 E-3
from controller to SMY 3.12
from SMY to controller 3.15
T
Two-tone modulation 2.18
U
Universal commands 3.19
у D
Variation 2.8; 2.19 |
ZZA-93 1.1
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