Hameg HM8134-2 User manual

®
Instruments
MANUAL•HANDBUCH•MANUEL
Programmable
Synthesizer
HM8134-2
ENGLISH

LEER

3
Subject to change without notice
RF-Synthesizer
HM8134-2
Table of contents
St.140201-but/tke
General information regarding the CE marking .......... 2
General informations....................................................... 5
Safety ............................................................................. 5
Operating conditions ..................................................... 5
Warranty......................................................................... 5
Power requirement ........................................................ 5
Control elements HM8134 (Front side): ........................ 6
Control elements HM8134 (Rear side): ......................... 6
Getting started ................................................................. 7
Main display ................................................................... 7
«Escape» key (13) ......................................................... 7
Setting parameters ........................................................ 7
Selecting frequency ....................................................... 7
Selecting level ................................................................ 7
Selecting modulations ................................................... 8
Amplitude modulation (AM) ......................................... 9
Frequency modulation (FM) ....................................... 10
Phase modulation (PM) ............................................... 11
GATE modulation ......................................................... 11
Selecting step .............................................................. 12
MENU key ....................................................................... 12
Reference «Ref» .......................................................... 12
Special function «Sfc» ................................................. 13
Beeper «Beep» ............................................................ 13
Encoder «Enco» ........................................................... 13
Interface «Com» .......................................................... 13
Serial interface (standard HO90) ................................. 13
RS232 interface (option HO89).................................... 13
IEEE-488 interface (option HO88) ................................ 13
PREV. key ..................................................................... 13
ON/OFF key ................................................................. 13
RCL-STO keys .............................................................. 13
REMOTE OPERATION ................................................. 13
Interfaces ..................................................................... 13
Commands supported ................................................... 14
General ......................................................................... 14
Description ................................................................... 14
Commands description ................................................ 14
Preliminary conventions .............................................. 14
Initialisation .................................................................. 14
General commands ...................................................... 14
Bus commands ............................................................ 14
Sound commands ........................................................ 14
Commands tree - OUTPUT ......................................... 14
Commands tree - POWER .......................................... 14
Commands tree - FREQUENCY .................................. 14
Commands tree - PHASE ............................................ 15
Commands tree - PULM (PULse Modulation) ............ 15
Commands tree - AM (Amplitude Modulation) .......... 15
Commands tree - FM (Frequency Modulation) .......... 16
Commands tree - PM (Phase Modulation) ................. 16
Commands tree - SYSTEM ......................................... 17
Error codes and their meaning..................................... 18
Flow Chart Menu ............................................................ 19
Synoptic........................................................................... 26
Referency loop CREF .................................................. 26
Principal loop PLL1-134 ............................................... 26
Secondary loop PLL2-134 ............................................ 27
Transposition TRA-134 ................................................. 27
Frequency synthesize DDS134 ................................... 28
Level lock loop AMPL134 ............................................ 28
Programmable attenuator ATP134 .............................. 29
Conversion ...................................................................... 30

4Subject to change without notice
KONFORMITÄTSERKLÄRUNG
DECLARATION OF CONFORMITY
DECLARATION DE CONFORMITE
®
Instruments
Herstellers HAMEG GmbH
Manufacturer Kelsterbacherstraße 15-19
Fabricant D - 60528 Frankfurt
Bezeichnung / Product name / Designation:
Programmable 1GHz Synthesizer
Typ / Type / Type: HM8134
mit / with / avec: -
Optionen / Options / Options: HO88, HO89
mit den folgenden Bestimmungen / with applicable regulations / avec les
directives suivantes
EMV Richtlinie 89/336/EWG ergänzt durch 91/263/EWG, 92/31/EWG
EMC Directive 89/336/EEC amended by 91/263/EWG, 92/31/EEC
Directive EMC 89/336/CEE amendée par 91/263/EWG, 92/31/CEE
Niederspannungsrichtlinie 73/23/EWG ergänzt durch 93/68/EWG
Low-Voltage Equipment Directive 73/23/EEC amended by 93/68/EEC
Directive des equipements basse tension 73/23/CEE amendée par 93/68/CEE
Angewendete harmonisierte Normen / Harmonized standards applied / Normes
harmonisées utilisées
Sicherheit / Safety / Sécurité
EN 61010-1: 1993 / IEC (CEI) 1010-1: 1990 A 1: 1992 / VDE 0411: 1994
Überspannungskategorie / Overvoltage category / Catégorie de surtension: II
Verschmutzungsgrad / Degree of pollution / Degré de pollution: 2
Elektromagnetische Verträglichkeit / Electromagnetic compatibility
Compatibilité électromagnétique
EN 61326-1/A1
Störaussendung / Radiation / Emission: Tabelle / table / tableau 4, Klasse /
Class / Classe B.
Störfestigkeit / Immunity / Imunitee: Tabelle / table / tableau A1.
EN 61000-3-2/A14
Oberschwingungsströme / Harmonic current emissions / Émissions de courant
harmonique:
Klasse / Class / Classe D.
EN 61000-3-3
Spannungsschwankungen u. Flicker / Voltage fluctuations and flicker /
Fluctuations de tension et du flicker.
Datum /Date /Date Unterschrift / Signature /Signatur
15.01.2001
E.Baumgartner
Technical Manager/Directeur Technique
General information regarding the CE marking
HAMEG instruments fulfill the regulations of the EMC directive. The conformity test made by HAMEG
is based on the actual generic- and product standards. In cases where different limit values are applicable,
HAMEG applies the severer standard. For emission the limits for residential, commercial and light industry
are applied. Regarding the immunity (susceptibility) the limits for industrial environment have been used.
The measuring- and data lines of the instrument have much influence on emmission and immunity and
therefore on meeting the acceptance limits. For different applications the lines and/or cables used may
be different. For measurement operation the following hints and conditions regarding emission and
immunity should be observed:
1. Data cables
For the connection between instruments resp. their interfaces and external devices, (computer, printer
etc.) sufficiently screened cables must be used. Without a special instruction in the manual for a reduced
cable length, the maximum cable length of a dataline must be less than 3 meters and not be used
outside buildings. If an interface has several connectors only one connector must have a connection to
a cable.
Basically interconnections must have a double screening. For IEEE-bus purposes the double screened
cables HZ72S and HZ72L from HAMEG are suitable.
2. Signal cables
Basically test leads for signal interconnection between test point and instrument should be as short as
possible. Without instruction in the manual for a shorter length, signal lines must be less than 3 meters
and not be used outside buildings.
Signal lines must screened (coaxial cable - RG58/U). A proper ground connection is required. In combination
with signal generators double screened cables (RG223/U, RG214/U) must be used.
3. Influence on measuring instruments.
Under the presence of strong high frequency electric or magnetic fields, even with careful setup of the
measuring equipment an influence of such signals is unavoidable.
This will not cause damage or put the instrument out of operation. Small deviations of the measuring
value (reading) exceeding the instruments specifications may result from such conditions in individual
cases.
HAMEG GmbH

5
Subject to change without notice
RF
for Laboratory
and Service
The HM8134-2is an exceptionally low-price RF-
Synthetiseur combining high performance with fast and
easy operation. It has excellent basic specifications,
including such characteristics as high frequency stability,
fast frequency change response time, spectral purity,
and repeatable signal output levels.
The HM8134-2provides continuous frequency coverage
from as low as 1Hz up to 1,2GHz. This wide range covers
the most commonly needed spectrum of audio, video,
and IF frequencies, as well as the RF frequencies used by
receivers and transmitters in a wide variety of
communication systems. The frequency resolution is
1Hz.
The other propriety are a four modulation (AM/FM/ PM/
GATE), a modulation source internal may be varied
between 10Hz and 100kHz, a modulation shape are (SIN
/ SQR / TRI / +RP / -RP). External input allow modulation
between DC and 100kHz. The FM deviation may be
varied up to ± 400kHz and the PM deviation 10rad , the
AM modulation depth is variable from 0 to 100% and the
GATE on/off Ratio between 50dB and 80dB.
The HM8134-2have a fast response time of 10ms for
frequency and amplitude changes (same range frequency
and without modulation) is another outstanding chara-
cteristic of this instrument.
The instrument parameters are all clearly displayed on
two lines of 20 characters each on a backlight LCD.
The HM8134-2was designed with the thought of
operational ease and productivity in mind. Menu-driven
operation gives clear, up-front information at every stage.
Parameters are either set via the center rotary dial or by
the front-panel keypad. A maximum of ten frequently
used instrument settings can be stored in a non-volatile
memory.
Full programmability for use in automated measuring
systems is provided by the optional IEEE-488 (HO88) or
RS232 (HO89) interfaces. Either one of these options can
be factory-installed at the time of purchase, or can easily
be added by the user.
With the HM8134-2, HAMEG offers a price/performance
ratio unsurpassed in today’s market. As already success-
fully demonstrated in its oscilloscope and Modular Sy-
stem HM8000 series, HAMEG has again reached its goal
of cost-effective, high-quality instrumentation by con-
centrating on essentials, keeping operation simple without
omitting important functions.
IFrequency range: 1Hz to 1200MHz
IFrequency accuracy ±5x10-7 (optional ±5x10-8)
IFrequency resolution 1Hz
IAM / FM / PM / GATE - Modulation
IOptional IEEE-488 and RS 232 - Interface
RF-Synthesizer HM8134-2

6Subject to change without notice
Input impedance: 10kΩ
Input voltage: the modulation is calibrated with 2Vcc
Output source (int,ext): (BNC jack in front panel)
Output voltage: ≤ ± 2V
Amplitude modulation
Level: ≤ +7dBm
Modulation source: internal ,external
AM-depth: 0 to 100%
Resolution: 0,1%
Accuracy (internal sine): ±4% of reading ±0,5% of value
( AM-depth ≤ 80% , Fmod ≤ 1kHz)
±7% of reading ±0,5% of value
( AM-depth ≤ 80% , Fmod > 1kHz)
Bandwidth ext: (to 1dB)
10Hz-50kHz AC coupled
Distorsion: <2% (AM-depth ≤ 60% to 1kHz)
<6% (AM-depth ≤ 80% , level = +7dBm 10Hz to 20kHz)
Frequency modulation
Modulation source: internal ,external
Deviation: ±200Hz to ±150kHz (<16MHz )
± 2kHz to ±400kHz ( 16 -256MHz)
± 1kHz to ±200kHz ( 256 -512MHz)
± 2kHz to ±400kHz ( 512 -1024MHz)
Resolution: 100Hz
Accuracy (internal sine): ±2% Fmod ≤ 1kHz + residual-FM
±5% Fmod > 1kHz + residual-FM
Bandwidth ext: (to 1dB)
DC coupled: DC- 30kHz(100kHz <16MHZ) NUM
AC coupled: 10Hz- 30kHz(100kHz <16MHZ) NUM
30kHz-100kHz ANA
Distorsion: < 3% for deviations ≥ 10kHz
Phase modulation
Modulation source: internal ,external
Deviation: 0 to 3,14rad ( <16MHz )
0 to 10rad ( 16 - 1200MHz )
Resolution: 0,01rad
Accuracy (internal sine): ±5% to 1kHz + residual-PM
Bandwidth ext: (to 1dB)
DC coupled: DC- 30kHz (100kHz <16MHZ) NUM
AC coupled: 10Hz- 30kHz (100kHz <16MHZ) NUM
30kHz-100kHz ANA
Distorsion: < 3% for Fmod=1kHz, Deviation=10rad
Gate modulation
Modulation source: external
on/off Ratio: ≥ 65dB (<16MHz)
≥ 80dB (16MHz - 512MHz)
≥ 50dB (512MHz -1200MHz)
Rise/Fall time: ≤ 1,5µs (<16MHz )
≤ 7,5µs (16MHz -1200MHz )
Delay time: ≤ 1,5µs (<16MHz )
≤ 15µs (16MHz -1200MHz )
Input modulation: (BNC jack in back panel)
Input level: TTL: 0 OFF 1 ON or 1 OFF 0 ON
General
Interfaces: options bus IEEE-488(HO88) or RS232(HO89)
IEEE-488 functions: (T6),(L4) SH1,AH1,RL1,DC1,DT0 and R0(HO80)
Set-up memory locations: 10
Dimensions: 285 X 75 X 365 (W X H XD)
Weight: approx. 10kg
Power consumption: approx. 70VA
Operating conditions: +0°C to +40°C
Humidity: 10% - 90% no condensation
Warm up time: typ. 60min.for the specifications
Supply voltages: 115/230V ±10%, 50-60Hz
Safety: classe I (IEC 1010-1/VDE 0411)
Specifications
(Referency temperature :23°C ±2°C)
Frequency
Range: 1Hz to 1200MHz
Resolution: 1Hz
Setting time: < 10ms (if same range)
< 60ms (range to range)
Standard 10MHz
Stability (10 to 40°C): ≤ ± 0,5ppm
Aging: ≤ ± 1ppm/year
Option OCXO 10MHz
Stability (10 to 40°C): ≤ ± 5 10-8
Aging: ≤ ± 5 10-9/day
Output referency internal: ( BNC jack in back panel)
Output voltage: TTL
Input referency external: ( BNC jack in back panel)
Input frequency: 10MHz ±5ppm
Input level: > 0dBm
Spectral purity
without modulation, level ≤ +10dBm
Harmonic: 1Hz to 1200MHz ≤ -30dBc
Non harmonic: 16MHz to 500MHz ≤ -55dBc
( > 15kHz offset)
Residual-FM: < 50Hz RMS to 1GHz (0,3-3kHz BW)
Residual-PM: <0,06rad RMS to 1GHz (0,3-3kHz BW)
Residual-AM: < 0,1% (50Hz to 10kHz)
Phase noise (dBc/Hz)
Offset
Range 1kHz 10kHz 100kHz
<16MHz -82 -100 -121
16 - 256MHz -74 -84 -108
256 - 512MHz -80 -90 -115
512 -1024MHz -74 -84 -108
100 1000 1x1041x1051x106
Offset (Hz)
Output level
Range: -127dBm to +13dBm
Resolution: 0,1dB
Accuracy: ± 0,5dBm level ≥ -57dBm
±(1dBm+0,4dBm/10dB)level < -57dBm
Setting time: < 10ms (with modulation)
< 60ms (without modulation)
Impedance: 50Ω
V.S.W.R.: <1,5
Modulation source
Modulation source int: 10Hz to 100kHz (40kHz in AM ) Sine
10Hz to 20kHz Sqr, Tri, Rmp+, Rmp-
Resolution: 10Hz
Input modulation ext: ( BNC jack in front panel)
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
Phase noise (dBc/Hz)
Technical specifications HM8134-2

7
Subject to change without notice
Safety
The instrument has been designed and tested in accordance
with VDE 0411 , safety requirements for electrical equipments
for measurement, control and laboratory use. It has left the
factory wholy conform to this standard. Thus it is also in
accordance with the International standard IEC Publication
1010-1 and the European standard EN 61010-1.
The case chassis and all measuring terminals are connected to
the protective earth contact of the appliance inlet. The
instrument operates according to safety Class I (three-conductor
power cord with protective earthing conductor and a plug with
earthing contact).
CAUTION:
The mains/line plug shall only be inserted in a socket
outlet provided with a protective earth contact. The
protective action must not be negated by the use of an
extension cord without a protective conductor (or
other means).
The mains/line plug should be inserted before connections are
made to measuring circuits. Whenever it is likely that protection
has been impaired, the instrument shall be made inoperative
and be secured against any unintended operation. The
protection is likely to be impaired if, for example, the instrument
· shows visible damage.
· fails to perform the intended measurements.
· has been subjected to prolonged storage under unfavourable
conditions (e.g. in the open or in moist environments).
· has been subject to severe transport stress (e.g. in poor
packaging).
In case of leakage coming from a broken «lcd» display and
contact with skin, clean with pure water and soap . When the
metallic case is open or replaced, the instrument has to be
disconnected from the power. If measurements or calibrations
are necessary with an open instrument, they must be performed
by a qualified technician.
Operating conditions
The instrument has been designed for indoor use. The
permissible ambient temperature range during operation is
+0°C to +40°C, nevertheless refer to the technical specifications
at +23°C 2°C. It may occasionally be subjected to temperatures
-10°C without degrading its safety. The permissible ambient
temperature range for storage or transportation is -40°C to
+60°C.
The maximum operating altitude is up to 2200m. The maximum
relative humidity is up to 80%.
If condensed water exists in the instrument it should be
acclimatized before switching on . In some cases (e.g. extremely
cold) two hours should be allowed before the instrument is put
into operation. The instrument should be kept in a clean and
dry room and must not be operated in explosive, corrosive,
dusty, or moist environments. The instrument can operate in
any position, but the convection cooling must not be impaired
and the ventilation holes must not be covered.
Warranty
HAMEG warrants to its customers that the products it
manufactures and sells will be free from defects in materials
and workmanship for a period of 2 years.
This warranty shall not apply to any defect, failure or damage
caused by improper use or inadequate maintenance and
care.This warranty is limited to repair and if necessary to
replace the instrument according to the decision of HAMEG
only.
HAMEG shall not be obliged to provide service under this
warranty to repair damage resulting from attempts by personnel
other than HAMEG represantatives to install, repair, service or
modify these products. In order to obtain service under this
warranty, customers must contact and notify the distributor
who has sold the product.
Each instrument is subjected to a quality test with 24 hours
burn-in before leaving the production . Practically all early
failures are detected by this method. In the case of shipments
by post, rail or carrier it is recommended that the original
packing is carefully preserved. Transport damages and damage
due to negligence are not covered by the guarantee. In the
case of a complaint, a label should be attached to the housing
of the instrument which describes briefly the faults observed.
If at the same time the name and telephone number (dialing
code and telephone or direct number or department designation)
is stated for possible queries , this helps towards speeding up
the processing of guarantee claims.
Power requirement
The instrument is designed for a power source of 110V/220V
50Hz. The frequency and the voltage can fluctuate to 10%. An
AC power cord is supplied with the instrument. Connect it to
the power receptacle on the rear panel. Before connecting the
instrument to the power source, always make certain that the
line voltage switches on the rear panel are set to the position
corresponding to the voltage of the AC power source. The
instrument is protected by a slo-blow fuse installed in the fuse
holder.
General informations

8Subject to change without notice
Control elements HM8134 (Front side):
(1) POWER
On / Off switch and led.
(2) MOD. IN
Input of external modulation.
(3) PREV.
Selection of previous menu.
(4) MEMORY RCL
Key for recalling one of 10 memories for instrument
settings.
(5) CONTEXT SENSITIVE KEYS
Action depending on the context display.
(6) MEMORY STO
Key for storing one of 10 memories for instrument
settings.
(7) MENU
Input key in the configuration menu.
(8) DISPLAY
Two lines of 20 characters each on a backlight LCD.
(9) FUNCTIONS
Functions keys and leds.
(10) DIGITAL ROTARY CONTROL
(11) NUMERIC KEYPAD
Input parameters with unit validation.
(12) ON/OFF
Key for activation of output.
(13) ESC.
Cancels the current display.
(14) RF OUT
Signal output.
(15) MOD. OUT
Output for modulation signal.
(16) MAINS / LINE SOCKET
(20) REF. 10MHz OUTPUT
(21) REF. 10MHz INPUT
(22) INTERFACE
Connector interface HO90 (Option HO88/89)
Control elements HM8134 (Rear side):
(17) VOLTAGE SELECTOR
(18) FUSE
(19) GATE INPUT
TTL-compatible
Control elements HM8134

9
Subject to change without notice
Getting started
After depressing the power (red) key (1), the HM8134 display
will successively contain the following messages:
• the type (SYNTHESIZER) and the reference
of the instrument (HM8134)
• the self-test messages «RAM checking» and «DDS
loading»
• the reference frequency in progress
(internal or external)
• the type of interface ( HO88 / HO89 / HO90 )
• IEEE488 address if the option is present.
The unit takes again the previous configuration existing before
switching off . The output signal is always off.
Factory configuration
At delivery the instrument is adjusted for a basic set-up as
follows:
• Frequency: 1000MHz
• Level: +7dBm
• No modulation
• Internal reference frequency
• Fmod: 1kHz, Shape: sine (for all modulations)
• Dev: 20kHz (FM), Dev: 1rad (PM) , Depth: 50% (AM)
• Backlight medium, contrast maximum.
• Sound indicator: none.
• Rotary control: on.
• If HO90 default config (4800 bauds / 1 stop / 8 bits)
This basic adjustment can be recalled at any time as follows:
• Switch off the unit.
• Switch on the unit and hold the «ESC» key until hearing
several «beeps».
This procedure is specially useful in case of doubt.
Caution:
The 10 memories storing configurations are erased and
replaced by the previous basic adjustments.
Main display
This display shows the frequency and level of the RF output
signal and the reference in use (INT or EXT) too. We get, if no
modulation (AM, FM, PM) is turned on:
Moreover, it contains some modulation parameters (for
example in case of AM modulation , shape SQR and Fmod =
1kHz)
We leave this state by pressing one of the function (9) or one
of the four context sensitive keys (5).
«Escape»key (13)
The «ESC» key allows the user to be back in the main display,
unselecting the current function (9) or cancelling the numeric
keypad input.
Setting parameters
Once a parameter is selected (for exemple «FREQ.») with a
function key (9) , a new value of this parameter can be entered
from the data keypad (11) or modified by the digital rotary (10)
or by one of the four context sensitive keys below the
displayed marks - and + (for appling step) (5).
Operation of the data keypad is conventional. Depress
successively the numeric keys representing the parameter
value and at the end depress the unit key ( for example MHz
or dBm ...). Note that it is not necessary to enter any trailing
zeroes.
Before the unit selection , it is possible to cancel the value by
pressing the «ESC» key (13) , the previous value is restored.
The choice of the units is free but the instrument will display
the properest unit ( for example 1 to 3 digits on the left of the
decimal point ).
The encoder modifies the value of the digit underlined by the
cursor (even if the cursor underlines a blank position which is
considered as 0). The cursor move to another position by
pressing the keys (5) below < and > and the value can be
increased or decreased by - and +.
An unproper value is announced by a warning message
(except for the out of range encoder and steps) and the sound
indicator.
Selecting frequency
After pressing the «FREQ» function key (9),we get:
A new value of this carrier can be entered from the data keypad
(11) or modified by the digital rotary (10) or one of the four
context sensitive keys (5). For more details, refer to the
paragraph « setting parameters».
The frequency range is: 1Hz to 1024MHz.
The resolution is 1Hz, if a value is entered with a higher
resolution the instrument makes a truncation keeping 1Hz
resolution.
Selecting level
After pressing the «LEVEL» function key (9), we get:
Operation - Getting started

10 Subject to change without notice
The return to the previous menu is possible by pressing the
«PREV.» key (3).
After selecting «Fmod» option, we get (from AM MENU)
The frequency of internal modulation signal may be directly
change by numeric keypad (11) or modified by the digital rotary
(10) or one of the four context sensitive keys (5). The return
to the previous menu is possible by pressing the «PREV.» key
(3).
The frequency range is:
• 10Hz to 100kHz Sine by step 10Hz ( 40kHz in AM).
• 10Hz to 20kHz Tri,Sqr,+Rp,-Rp by step 10Hz
(Sqr in FM and PM).
The modulation is turned on by pressing the context sensitive
key below the string «off»; one time for turning the internal
source on and a second time for turning the external source
on. The active source is pointed out by the triangle beside the
option.The announciator of the MOD.OUT. is lighting.
More generaly, the modulation is turned off by pressing the
key corresponding to the active source one or two time
depending on witch one is in progress ( OffIntExtOff). The
return to the previous menu is possible by pressing the
«PREV.» key (3). In external AM, the only one possible option
is to change the depth (see corresponding paragraph).
The frequency of the external modulation must be in a range:
• 10Hz to 50kHz in AM.
In external FM or PM several cases are possible depending on
the carrier frequency.
For carrier frequencies < 16MHz, we get (for FM):
A new value of this level can be entered from the data keypad
(11) or modified by the digital rotary (10) or one of the four
context sensitive keys (5). For more details, refer to the
paragraph « setting parameters».
The level range is:
• -127dBm to +13dBm without amplitude modulation.
• -127dBm to +7dBm with amplitude modulation.
• The resolution is 0.1dBm
The level displayed is specified for a loading impedance of 50.
The choice of the unit is made by the keys (11)» dBm/mV/µV
«. For the volt unit the instrument performs a three digits
conversion according to the properest range (nV/µV/nV).
Caution:
When the AM modulation is on, the instrument auto-
matically set the limit to +7dBm, for avoiding to exceed
the dynamic of the ouput amplifier.
Selecting modulations
After pressing the «MOD.» (9) function key, we get:
Now the modulation type is selected by pressing one of the
four context sensitive keys (5) corresponding to:
• AM modulation.
• FM modulation.
• PM modulation.
• GATE modulation.
The return to the previous display is possible by pressing the
«PREV.» key (3).
After selecting the type of modulation, the display is (FM
MENU):
Again, the selection of the parameters for AM/FM/PM is made
by pressing one of the four context sensitive keys (5)
corresponding to:
• Shape of internal modulation signal.
• Frequency of the internal modulation signal.
• The deviation (or depth in AM).
• The modulation state.
The return to the previous display is possible by pressing the
«PREV.» key (3).
After selecting «Shape» option, we get in that case (AM
SHAPE MENU).
The shape of the internal modulation signal may be modified
by the context sensitive keys (5). The active signal is pointed
out by the sign.
Operation - Setting parameters

11
Subject to change without notice
• DC coupled NUM (DC-100kHz).
• AC coupled NUM (10Hz-100kHz).
• Deviation (see corresponding paragraph).
example 1:
CH1→modulation: first pulse width 150s.
second pulse width 1.1ms.
period 2.5ms (Fmod: 400Hz).
CH2 →moduled signal (deviation: 2kHz).
for carrier frequencies 16MHz, we get (for FM):
• DC coupled NUM (DC-30kHz).
• AC coupled NUM (10Hz-30kHz).
• AC coupled ANA (30kHz-100kHz)
• Deviation (see corresponding paragraph).
example 2:
In this example, external modulation signal is a «trinary» code
composed of 9 bits; 1 bit being composed itself of 2 narrow
or/and wide pulses, depending on the combinaison expected:
• A bit composed of 1 wide and
1 narrow pulses is a bit «OPEN».
• A bit composed of 2 narrow pulses
is a bit « LOW».
• A bit composed of 2 wide pulses
is a bit «HIGH».
For detecting the first bit , a synchronisation bit (long low level)
is present. The modulation frequency is here of 20Hz.
CH1 →modulation: narrow pulse of 200µs.
wide pulse of 1.8ms.
synchronisation bit of 14ms.
CH2 →zoom of CH1.
CH1 →demodulated signal: DC coupled, NUM position.
CH2 →demodulated signal: AC coupled, NUM position.
The return to the modulation menu is possible by pressing the
«PREV» key (3) and the return to the main display by pressing
the «ESC» key (13).
External modulation input is on the front panel «MOD.IN» (2).
The signal can be of any shape or amplitude, however the AM-
depth or FM/PM deviation programmed is calibrated only for
a 2 Vcc signal at the input.
Amplitude modulation (AM)
From the AM menu, after selecting of the context sensitive
keys «D%» (5), we get:
A new value of this depth can be entered from the data keypad
(11) or modified by the digital rotary (10) or one of the four
context sensitive keys (5).
The depth range may be change from: 0 to 100% with a
resolution of 0.1%.
The return to the previous menu is possible by pressing the
«PREV» key (3) and the return to the main display by pressing
the «ESC» key (13).
example 3:
For AM sine (depth : 50%), we get:
Operation - Amplitude Modulation

12 Subject to change without notice
example 4:
For AM square (depth: 50%), we get:
example 5:
For AM triangle (depth: 50%), we get:
example 6:
For AM positive ramp (depth: 50%), we get:
example 7:
For AM negative ramp (depth: 50%), we get:
Frequence modulation (FM)
From the FM menu, after selecting of the context sensitive
key «Dev» (5), we get:
A new value of this deviation can be entered from the data
keypad (11) or modified by the digital rotary (10) or one of the
four context sensitive keys (5).
The deviation range may be change by step of 100Hz from:
• ± 200Hz to ± 150kHz ( <16MHz).
• ± 2kHz to ± 400kHz ( 16 - 256MHz).
• ± 1kHz to ± 200kHz ( 256 - 512MHz).
• ± 2kHz to ± 400kHz ( 512 -1024MHz).
The return to the previous menu is possible by pressing the
«PREV» key (3) and the return to the main display by pressing
the «ESC» key (13).
example 8:
For FM sine, we get:
(deviation: 400kHz)
example 9:
For FM square, we get:
Operation - Frequence Modulation

13
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CH1 →modulation.
CH2 →modulated signal (deviation: 80kHz).
It is a way to get a FSK modulation.
Phase modulation (PM)
From the PM menu, after selecting of the context sensitive
key «Dev» (5), we get:
A new value of this deviation can be entered from the data
keypad (11) or modified by the digital rotary (10) or one of the
four context sensitive keys (5).
The deviation range may be set from:
• 0 to 3.14 rad (<16MHz).
• 0 to 10 rad ( 16-1024MHz),
(by step of 0.01 rad.)
The return to the previous menu is possible by pressing the
«PREV» key (3) and the return to the main display by pressing
the «ESC» key (13).
example 10:
For PM sine, we get: (deviation: 1rad)
example 11:
For PM square, we get:
CH1 →modulation.
CH2 →modulated signal (deviation: 1rad).
It is a way to get a PSK modulation.
GATE modulation
The GATE modulation is made by sampling the output carrier
with logic signal (GATE) and is caracterised by:
• on / off Ratio.
• Rise / Fall time.
• Delay time.
The GATE signal (level TTL) is applied at the input «GATE
INPUT» in the rear panel. When the GATE signal is at the state
«active» (level «1» or «0» depending on the choice), the carrier
is present at the output.
After selecting the GATE option in the modulation menu, we
get:
Press one of the four sensitive keys (5) for selecting the active
level and for turning the gate on or off. Two triangles point out
the options « «, « «, « on «, « off «. The return to the
previous menu is possible by pressing the «PREV» key (3) and
the return to the main display by pressing the «ESC» key (13).
The GATE modulation can be active with an other modulation
(for example the GATE modulation with AMsin modulation and
Fmod = 10kHz)
example 12:
(Fgate: 250Hz Sqr)
CH1 →AM signal (depth: 50%) and GATE modulation.
CH2 →signal with GATE modulation.
Operation - Phase Modulation - Gate Modulation

14 Subject to change without notice
Selecting step
After pressing the «STEP» function key (9), we get:
Now the step type is selected by pressing one of the four
context sensitive keys (5). If the parameter is already selected,
the «STEP» function key (9) allows you to directly modify the
step type. Press again the step key to be back in previous
display. For quantity having two possible units (level and
phase), the step unit is the current unit selected for the
parameter.
A new value of this step can be entered from the data keypad
(11) or modified by the digital rotary control (10) or one of the
four context sensitive keys (5).
The step can be:
• frequency (FSTEP:).
• level (Level STEP:).
• modulation frequency (Fmod STEP:).
• AM-depth (AM STEP:).
• FM-deviation (FM STEP:).
• PM-deviation (PM STEP:).
MENU key
The «MENU» key (7) allow to display the configuration menu.
The options are selected by pressing one of the two context
sensitive keys (5).The return to the main display is possible by
pressing the «ESC» key (13).
Reference «Ref»
The HM8134 is basically equipped with a temperature
compensated crystal oscillator 10MHz. The option (OCXO)
with a high-stability 5 10-8 (10 to 40°C) is available.
At every access to the config menu and after selecting a
context sensitive keys «Ref» (5).The phaselock loop of the
reference is tested (Locked , Unlocked). Increased stability for
the HM8134 may also be obtained from an external oscillator.
The external reference frequency must be connected to the
«REF.10MHz INPUT» and the internal reference frequency is
available on the «REF.10MHz OUPUT» of the rear panel.
Caution:
If the reference frequency from an external source is not
within specifications an «error»message will be
displayed. The HM8134 is then automaticaly switched
on the internal reference frequency.
Special function «Sfc»
After selecting the «Sfc» option in the config menu, we get:
The special function are selected by pressing the context
sensitive keys (5).
Beeper «Beep»
The built-in beeper will react to every key stroke and will
indicate any operation errors. The activation and adjustment of
the volume is done in beeper menu, we get:
• a sound (Soft).
• a sound (Loud).
• no sound (None).
Encoder «Enco»
The activation of the rotary control is done in this menu by
selecting the «On» or «Off» with context sensitive keys (5).
caution:
Think to check this option in case of no operating of the
rotary.
Interface «Com»
The HM 8134 is basically equipped of the serial interface
(HO90). The instrument is prepared for the installation of the
optional IEEE-488 (HO88) or RS232 (HO89) interface. All the
interfaces are galvanicly isolate. Only the parameters of the
installed interface appear and can be modified.
Operation - Menu key

15
Subject to change without notice
Serial interface (standard HO90)
It is possible to select the transmission rates 300, 600, 1200,
2400, 4800 or 9600 Bauds by pressing the context sensitive
key (5). The other parameters are fixed:
• parity none
• 8 data Bits
• 1 stop Bit
RS232 interface (option HO89)
The interface RS232 (HO 89) have the same possibility to
select transmission rates. It is also possible to change the
parity (even/odd/none), the width word (7 or 8 Bits) and the
number of stop bits (1 or 2).
IEEE-488 interface (option HO88)
With this menu, it is possible to modify the instrument address
on the IEEE-488 bus when the option HO88 is installed. The
address can be increased or decreased in autorized limits (1 to
30) by selecting one of the two context sensitive keys (5).
Display «Lcd»
The adjustment of the contrast and display light are selected
by pressing one of four context sensitive keys (5), corresponding
to « + » or « - ».
PREV. key
The previous menus is got by pressing the «PREV.» key (3).
ON/OFF key
The output «RF OUT» (14) is active only if the «ON/OFF» key
(12) is pressed and the «ON» led is lighted. When the signal
is not active, the output is an open circuit.
RCL-STO keys
The instrument is equipped with an internal non-volatile memory
which stores all operational parameters in use (frequency,
level, modulation ...) when the power is switched off. In
addition to this « current set-up» storage the instrument offers
the possibility to store 10 complete configurations, corres-
ponding to current state at different time.
After pressing the «STO» key (6), we get:
The current configuration can be stored by pressing a numeric
key from 0 to 9.
After pressing the «RCL» key (4), we get:
A configuration can be recalled by pressing a numeric key from
0 to 9. That becomes the current configuration.
REMOTE OPERATION
Interfaces
The HM8134 may be equipped with one of the three following
interfaces:
• serial interface (HO90) which is the default equipment.
• RS232 interface (HO89) which is a special option.
• IEEE-488 interface (HO88) which is a special option.
The serial interface is a 9-pin connector ( DB-9, male connector)
on the rear panel.
Only three wire lines are connected inside:
• pin 2 as Txd (transmit data).
• pin 3 as Rxd (Receive data).
• pin 7 as Gnd (Ground).
Electric voltage on Rxd must be according to the RS232
hardware standard (+12/-12V max). This provides the capability
to communicate with any PC computer on COM1 or COM2
port.The communication protocol is an Xon/Xoff procedure
and operates as follows. Once the instrument has received a
commands line (refer to the definition below), it sends the Xoff
character (19 dec).
After all commands (in the received line) have been computed
and executed, it sends the Xon character (17 dec), making the
transmission of a new line possible. Commands are the same
for all interfaces (For more details about the options refer to
the corresponding manual).
When a remote command is received, the instrument displays
on the second line the following message:
The user may come back in Local mode by pressing the
context sensitive keys (5) just bellow the Local option (all other
keys are locked).
The user may lock all keys, by the command LK1 and in this
case the display becomes:
Operation - Interface - Remote operation

16 Subject to change without notice
Commands supported
General
There are two kinds of commands. The first one is the set of
old commands which are HM8133-2 compatible. They are
normally understood by the instrument without changing
existing programs. The second one is a new set with a similar
syntax to the SCPI standard. We recommend to use these
commands which are the only one described hereafter.
Description
Commands are sent by lines to the instrument, one line being
a set of characters in ASCII code between 20 and 127 (dec),
and terminated by an end of line terminator (10 dec) or 13
following by 10 (dec).Each line is composed of one or several
simple commands (elementary) separated one another by the
«;» (comma) separator.
Example: :POWER 7 ; :FREQ 500E+6 ; :OUTP ON
The level is at +7dBm , the frequency at 500MHz and the
output signal ON. The strings of data are not case sensitive.That
means lower case and upper case are the same.A simple
command gives an access to a quantity or a function of the
instrument. All commands acting on the same quantity are
brought together syntaxicaly in a tree structure. We are going
to detail function by function beginning with the simplest and
the usefulest.
Commands description
Preliminary conventions
In the lines below, we use the following conventions:
- lower cases in keywords are optional, meaning for example
that the keyword «OUTPut» may be employed as OUTP
(short writing) or OUTPUT (long writing).
- [] means that the keyword in brackets is optional.
- | means «exclusive or» between several parameters.
- a NR1 number is a string of digits without decimal point
(1234).
- a NR2 number is a string of digits with a decimal point
(1234.56).
- a NR3 number is a string representing a decimal number
with an exposant (1234.56E+3).
Initialisation
*RST*RST
*RST*RST
*RST idem key «ESC» at power on time except beep, display,
com and memory config (0-9) which are not modified
General commands
*IDN? identification
*SAV x store current state (x from 0 to 9)
*RCL x recall configuration (x from 0 to 9)
SNR? serial number
FAB? manufacture date
Bus commands
LK0 local mode enable
LK1 local mode disable
RM0 local mode
RM1 remote mode
Sound commands
BP0 Beep off
BPS soft Beep
BPL loud Beep
Commands tree - OUTPUT
It brings together commands for switching the RF output
signal.
Syntax:
:OUTPut[:STATe] 0 | OFF | 1 | ON (1)
:OUTPut[STATe]? (2)
The line (1) allows you to change the state , the parameters
«0» or «OFF» are equivalent and turn the output off, «1» or
«ON» turn the output on. The line (2) asks the output state to
the instrument. It always sends back «1» for output ON and
«0» for output OFF.
Examples:
:OUTP ON Ouput ON.
:OUTP 1 Same as above.
:OUTPUT ON Same as above.
:OUTPUT:STATE 1 Same as above.
:OUTP? Asks the ouput state.
:OUTPUT:STATE? Same as above.
Commands tree - POWER
It summarizes the commands for changing the level of the RF
output signal.
Syntax:
:POWer[:LEVel] <NUM> (1)
:POWer[:LEVel]? (2)
:POWer:UNIT V | DBM (3)
:POWer:UNIT? (4)
The line (1) allows you to modify the level, the <NUM>
parameter is a NR2 number in the range covered by the
instrument. None unit must follow the number, the current
unit is assumed. The line (3) allows you to change the current
unit. Two parameters are possible : V for Volt (mV/uV included),
or DBM for dBm.
The line (4) asks the current unit to the instrument. It sends
back the same strings as the corresponding command
parameters above. The line (2) asks the current level to the
instrument. It sends back a NR2 number corresponding to the
resolution without the unit.
Examples:
:POW:UNIT DBM Set the level unit dBm
:POWER:UNIT DBM Idem
:POW 5.7 Set the level … 5.7 dBm
:POW:LEV 5.7 Idem ...
:POWER:UNIT? Ask the unit
Commands tree - FREQUENCY
It summarizes the commands about the signal (carrier)
frequency.
Operation - Commands description

17
Subject to change without notice
Syntax:
:FREQuency[:CW|:FIXed] <NUM> (1)
:FREQuency[:CW|:FIXed]? (2)
The line (1) allows you to modify the carrier frequency, the
<NUM> parameter is a NR1 or NR2 or NR3 number in the
range covered by the instrument.None unit must follow the
number, the Hz unit is the default one. The value is garbled
(same as the keypad) to the resolution. The «CW» and
«FIXed» options have no particular effect on the instrument,
they are present for compatibility with programs existing in the
SCPI standard. The line (2) asks the current (carrier) frequency
to the instrument. It sends back a string representing a NR3
decimal number.
Examples:
:FREQ 678E+6 Set the frequency 678MHz
:FREQUENCY 34000000 Set the frequency 34MHz
:FREQ? Ask the frequency
:FREQ:FIX 900E+6 Set the frequency 900MHz
Commands tree - PHASE
It summarizes the commands for selecting the source of the
reference signal.
Syntax:
:PHASe:SOURce INTern | EXTern (1)
:PHASe:SOURce? (2)
The line (1) allows you to switch the reference. Only one of the
2 parameters must be present: «INTern» for turning the
internal reference on, or «EXTern» for turning the external
reference on.
The line (2) asks which source is currently on to the instrument.
It sends back the strings «INT» or «EXT» corresponding to the
2 options described above.
Note:
It is strongly advised to check the state you have got
after a command (1) (for example simply with the query
command (2)).
Examples:
:PHAS:SOURCE EXT Turn external ref
:PHASE:SOUR? Query
:PHAS:SOUR? Idem above but shorter
Commands tree - PULM (PULse Modulation)
It summarizes the commands of the GATE modulation.
Syntax:
:PULM:STATe 1 | ON | 0 | OFF (1)
:PULM:STATe? (2)
The line (1) allows you to turn on or off the GATE modulation.
The «1» or «ON» parameters turn the modulation on and «0»
or «OFF» turn the modulation off (if present). The line (2)
allows you to pick up the state of the GATE modulation. The
instrument sends back «0» (char zero) if no modulation, «1»
(char one) in case of modulation.
:PULM:POLarity NORMal | INVert (3)
:PULM:POLarity? (4)
The line (3) allows you to set the validation level of the GATE
modulation, the NORMal parameter is for a high level validation,
and INVert is for a low level validation.
The line (4) asks the enabling level state. The instrument sends
back «1» for high level (NORMal), «0» for low level (INVert).
Commands tree - AM (Amplitude Modulation)
It summarizes the commands of the AM.
Syntax:
:AM[:DEPTh] <NUM> (1)
:AM[:DEPTh]? (2)
The line (1) allows you to modify the depth of modulation. The
<NUM> parameter is a NR2 number in the range covered by
the instrument. None unit must follow the number, % unit is
the default one. If the value has an accuracy higher than the
resolution (0.1%), the number is rounded to the corresponding
digit. The line (2) asks the current depth of modulation to the
instrument. It sends back a NR2 number corresponding to the
resolution (one digit after the decimal point) without the unit.
:AM:SOURce INTern | EXTern (3)
:AM:SOURce? (4)
The line (3) allows you to set the modulation source and at the
same time turns the FM on.
The parameters are clear enough. The line (4) asks the source
modulation to the instrument. It sends back the strings INT or
EXT (not INTERN or EXTERN). If the AM is turned off, the string
INT is sent back because this source is the default setting for
the «AM:STAT 1» command (the operation is the same as the
keypad).
:AM:INTern:FREQuency <NUM> (5)
:AM:INTern:FREQuency? (6)
The line (5) allows you to change the frequency of the internal
modulation signal. The <NUM> parameter is a NR1 or NR2 or
NR3 number in the range covered by the instrument. None
unit must follow the number, Hz unit is the default one. The
value is garbled (same as the keypad) to the resolution.
The line (6) asks the current modulation frequency to the
instrument. It sends back a string representing a NR3 decimal
number.
:AM:INTern:SHAPe SIN | SQU | TRI | +RP | -RP (7)
:AM:INTern:SHAPe? (8)
The line (7) allows you to change the shape of the internal
modulation signal.The parameters are: SIN for a sine signal,
SQU for square, TRI for triangle, +RP for a positive ramp, and
-RP for a negative ramp.
The line (8) asks the current shape to the instrument. It sends
back the same strings as the corresponding command
parameters above.
:AM:STATe 0 | OFF | 1 | ON (9)
:AM:STATe? (10)
Operation - Commands tree

18 Subject to change without notice
The line (9) allows you to turn the AM modulation on or off. The
parameters «1» or «ON» turn the AM on, and «0» or «OFF»
turn the modulation off (if present).
The line (10) asks the current AM state to the instrument. It
sends back «0» (char zero) if no AM is in progress, «1» (char
one) if AM is present.
Example:
:AM:INT:FREQ 3000; SHAP SQU; DEPT 60; STAT 1
Commands tree - FM (Frequency Modulation)
It brings together the commands of the FM.
Syntax:
:FM[:DEViation] <NUM> (1)
:FM[:DEViation]? (2)
The line (1) allows you to modify the FM deviation. The
<NUM> parameter is a NR1 or NR2 or NR3 number in the
range covered by the instrument. None unit must follow the
number, Hz unit is the default one. The value is garbled (same
as the keypad) to the resolution. The line (2) asks the current
FM deviation to the instrument. It sends back a string
representing a NR3 decimal number.
:FM:SOURce INTern | EXTern (3)
:FM:SOURce? (4)
The line (3) allows you to set the modulation source and at the
same time turns the FM on. The line (4) asks the FM source
to the instrument. It sends back the strings INT or EXT (not
INTERN or EXTERN).
If the FM is turned off, the string INT is sent back because this
source is the default setting for the «FM:STAT 1» command
(the operation is the same as the keypad).
:FM:INTern:FREQuency <NUM> (5)
:FM:INTern:FREQuency? (6)
The line (5) allows you to change the frequency of the internal
modulation signal. The <NUM> parameter is a NR1 or NR2 or
NR3 number in the range covered by the instrument. None
unit must follow the number, Hz unit is the default one. The
value is garbled (same as the keypad) to the resolution.
The line (6) asks the current modulation frequency to the
instrument. It sends back a string representing a NR3 decimal
number.
:FM:INTern:SHAPe SIN | SQU (7)
:FM:INTern:SHAPe? (8)
The line (7) allows you to change the shape of the internal
modulation signal. The parameters are : SIN for a sine signal,
SQU for square. The line (8) asks the current shape to the
instrument. It sends back the same strings as the corresponding
command parameters above.
:FM:STATe 0 | OFF | 1 | ON (9)
:FM:STATe? (10)
The line (9) allows you to turn the FM on or off. The parameters
«1» or «ON» turn it on, and «0» or «OFF» turn the modulation
off (if present). The line (10) asks the current FM state to the
instrument. It sends back «0» (char zero) if no FM is in
progress, «1» (char one) if FM is present.
:FM:MODE ANA | NUM (11)
:FM:MODE? (12)
The line (11) allows you to switch the operating mode
(depending on the input bandwidth expected) of the external
modulation. The parameters ANA and NUM are the same as
the options in the external FM menu (refer to the corresponding
paragraph ).
The line (12) asks the current mode to the instrument. It sends
back the same strings as the corresponding command
parameters above.
:FM:EXTern:COUPling AC | DC (13)
:FM:EXTern:COUPling? (14)
The line (13) allows you to switch the external input modulation
in AC or DC mode. The line (14) asks the current state to the
instrument. It sends back the same strings as the corresponding
command parameters above.
Example:
FM:INT:FREQ 9E+3; SHAP SIN; DEV 150E+3;
MODE NUM; STAT ON
Commands tree - PM (Phase Modulation)
It brings together the commands of the PM.
Syntax:
:PM[:DEViation] <NUM> (1)
:PM[:DEViation]? (2)
The line (1) allows you to modify the PM deviation. The
<NUM> parameter is a NR2 number in the range covered by
the instrument. None unit must follow the number, the current
unit is the default one. If the value has an accuracy higher than
the resolution, the number is rounded to the corresponding
digit.
The line (2) asks the current PM deviation to the instrument.
It sends back a string representing a NR2 decimal number
(without the unit).
:PM:UNIT RAD | DEG (3)
:PM:UNIT? (4)
The line (3) allows you to change the current unit. Two
parameters are possible : RAD for radian or DEG for degree.
The line (4) asks the current unit to the instrument. It sends
back the same strings as the corresponding command
parameters above.
:PM:SOURce INTern | EXTern (5)
:PM:SOURce? (6)
The line (5) allows you to set the modulation source and at the
same time turns the PM on. The line (6) asks the PM source
to the instrument. It sends back the strings INT or EXT (not
INTERN or EXTERN). If the PM is turned off, the string INT is
sent back because this source is the default setting for the
Operation - Commands tree

19
Subject to change without notice
«PM:STAT 1» command (the operation is the same as the
keypad).
:PM:INTern:FREQuency <NUM> (7)
:PM:INTern:FREQuency? (8)
The line (7) allows you to change the frequency of the internal
modulation signal. The <NUM> parameter is a NR1 or NR2 or
NR3 number in the range covered by the instrument. None unit
must follow the number, Hz unit is the default one. The value
is garbled (same as the keypad) to the resolution. The line (8)
asks the current modulation frequency to the instrument. It
sends back a string representing a NR3 decimal number.
:PM:INTern:SHAPe SIN | SQU (9)
:PM:INTern:SHAPe? (10)
The line (9) allows you to change the shape of the internal
modulation signal. The parameters are : SIN for a sine signal,
SQU for square.
The line (10) asks the current shape to the instrument. It sends
back the same strings as the corresponding command
parameters above.
:PM:STATe 0 | OFF | 1 | ON (11)
:PM:STATe? (12)
The line (11) allows you to turn the PM on or off. The
parameters «1» or «ON» turn it on, and «0» or «OFF» turn the
modulation off (if present). The line (12) asks the current PM
state to the instrument. It sends back «0» (char zero) if no PM
is in progress, «1» (char one) if PM is present.
:PM:MODE ANA | NUM (13)
:PM:MODE? (14)
The line (13) allows you to switch the operating mode
(depending on the input bandwidth expected) of the external
modulation. The parameters ANA and NUM are the same as
the options in the external FM menu (refer to the corresponding
paragraph ). The line (14) asks the current mode to the
instrument. It sends back the same strings as the corresponding
command parameters above.
:PM:EXTern:COUPling AC | DC (15)
:PM:EXTern:COUPling? (16)
The line (15) allows you to switch the external input modulation
in AC or DC mode. The line (16) asks the current state to the
instrument. It sends back the same strings as the corresponding
command parameters above.
Example:
:PM:UNIT DEG; DEV 120; INT:FREQ 1E+3;
SHAP SIN; MODE NUM; STATE 1
Commands tree - SYSTEM
Syntax:
:SYSTem:ERRor?
This line allows you to ask the current error code. This code is
the first recorded even if several errors occur successively.
After sending the error number the instrument sets it to zero
Operation - Commands tree
(it also set it to zero at power on time). Refer to the table of the
error codes hereafter.
General syntax note
As mentionned in some examples above, in each command
line the first character «:» is optional. In case of successive
commands corresponding to the same tree it is not necessary
to repeat all the description of the commands.
Example:
FM:INT:FREQ 9E+3; SHAP SIN; DEV 150E+3;
MODE NUM; STAT ON
is the same as :
:FM:INT:FREQ 9E+3; :FM:INT:SHAP SIN;
:FM:DEV 150E+3; MODE NUM; STAT ON
In fact „:FM“ for the first command indicates we get into the
FM tree (group) and the commands after, if they belong to the
same group, may be shorter (without repeating all the tree
description). At the opposite if the next command does not
belong to the same tree it is necessary to specify the root.

20 Subject to change without notice
Operation - Error codes and their meaning
Error codes and their meaning
00 No error
01 Direct Digital Synthesis error (Hardware)
02 Internal reference error (Hardware)
03 External reference error (Hardware)
04 PLL1 error (Hardware)
05 PLL2 error (Hardware)
08 Calibration error
09 Overload error (Hardware)
15 Level error (out of range)
16 (Carrier) frequency error (out of range)
21 AM modulation in progress (impossible to turn another modulation on)
22 PM modulation in progress (impossible to turn another modulation on)
23 FM modulation in progress (impossible to turn another modulation on)
25 AM depth error (out of range)
62 FM deviation error (must be in the range 2kHz-400kHz)
63 FM deviation error (must be in the range 1kHz-200kHz)
64 FM deviation error (must be in the range 200Hz-150kHz)
70 AM frequency modulation error (must be in the range 10Hz-20kHz)
71 AM frequency modulation error (must be in the range 10Hz-40kHz)
75 PM deviation error (in remote control, no phase < 0)
76 frequency error (in remote control, no frequency < 0)
81 FM or PM frequency modulation error (must be in the range 10Hz-20kHz)
82 FM or PM frequency modulation error (must be in the range 10Hz-100kHz)
90 PM deviation error (must be in the range 0rad<- >3.14rad)
91 PM deviation error (must be in the range 0rad- 10.00rad)
92 PM deviation error (must be in the range 0deg- 180.0deg)
93 PM deviation error (must be in the range 0deg- 573.0deg)
-102 Syntax or Parameter error (remote control)
-103 Invalid Separator (remote control)
-110 Command header error (remote control)
-120 Numeric data error (remote control)
Table of contents
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