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Aeroflex 3002 Operating Manual

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VXI SIGNAL GENERATOR
3002
Operating Manual
Document part no. 46892/226
Issue 8
8 July 2004

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Summary of Contents for Aeroflex 3002

  • Page 1 VXI SIGNAL GENERATOR 3002 Operating Manual Document part no. 46892/226 Issue 8 8 July 2004...
  • Page 2 VXI SIGNAL GENERATOR 3002 9 kHz - 2.4 GHz This manual applies to instruments with software issues of 2.00 and higher.  Aeroflex International Ltd. 2004 No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, or recorded by any information storage or retrieval system, without permission in writing by Aeroflex International Ltd.
  • Page 3 About this manual This manual explains how to use the 3002 AM/FM Signal Generators. Intended audience Persons engaged on work relating to equipment who have a need for accurately generated signals in the VHF and UHF spectrum. Structure Chapter 1 Main features and performance data.

  • Page 4: Table Of Contents

    PREFACE ...iv Precautions ... v Précautions ...viii Vorsichtsmaßnahmen ...xi Precauzioni ...xiii Precauciones ...xvi Chapter 1 GENERAL INFORMATION ...1-1 Chapter 2 INSTALLATION AND POWER-UP...2-1 Chapter 3 PROGRAMMING ...3-1 MISCELLANEOUS COMMANDS ...3-29 STATUS BYTE...3-33 ERROR MESSAGES ...3-43 Chapter 4 TECHNICAL DESCRIPTION...4-1 Chapter 5 ACCEPTANCE TESTING ...5-1 TEST PROCEDURES ...5-5 Annex A OPTION 11 FAST PULSE MODULATION ...A-1 Index...

  • Page 5: Preface

    PREFACE Patent protection The 3002 VXI Signal Generator is protected by the following patents: EP 0322139 GB 2214012 US 4870384 EP 0125790 GB 2140232 US 4609881...

  • Page 6: Precautions

    These terms have specific meanings in this manual: information to prevent personal injury. WARNING information to prevent damage to the equipment. important general information. Symbols The meaning of hazard symbols appearing on the equipment and in the documentation is as follows: Symbol General conditions of use...
  • Page 7 WARNING Fire hazard Access to the supply fuses is through the removal of an external cover. Removal of the covers should be referred to qualified Personnel. For continued protection against fire, fuses must only be replaced with those of the correct rating and type. WARNING Toxic hazards Some of the components used in this equipment may include resins and other materials which give...
  • Page 8 Installation Never insert or remove the instrument when the mainframe is already powered up. Always switch the mainframe off first and then on again afterwards, then run the resource manager again for normal operation. Suitability for use This equipment has been designed and manufactured by Aeroflex to generate low-power RF signals for testing radio communications apparatus.

  • Page 9: Précautions

    Les termes suivants ont, dans ce manuel, des significations particulières: contient des informations pour éviter toute blessure au personnel. WARNING contient des informations pour éviter les dommages aux équipements. contient d'importantes informations d'ordre général. Symboles signalant un risque La signification des symboles de danger apparaissant sur l'équipement et dans la documentation est la suivante: Symbole Conditions générales d’utilisation...
  • Page 10 Faites effectuer toute réparation par du personnel qualifié. Contacter un des Centres de Maintenance Internationaux dans la liste jointe à la fin du manuel. WARNING Risque lié au feu L'accès aux fusibles d'alimentation se fait après démontage d'un couvercle de protection extérieur. Cette manipulation est à...
  • Page 11 La protection de l'équipement peut être altérée s'il n'est pas utilisé dans les conditions spécifiées par Aeroflex. Aeroflex n'a aucun contrôle sur l'usage de l'instrument, et ne pourra être tenu pour responsable en cas d'événement survenant suite à une utilisation différente de celle prévue.

  • Page 12: Vorsichtsmaßnahmen

    Diese Hinweise haben eine bestimmte Bedeutung in diesem Handbuch: WARNING dienen zur Vermeidung von Verletzungsrisiken. dienen dem Schutz der Geräte. enthalten wichtige Informationen. Gefahrensymbole Die Bedeutung der Gefahrensymbole auf den Geräten und in der Dokumentation ist wie folgt: Symbol Allgemeine Hinweise zur Verwendung Dieses Produkt wurde entsprechend den Anforderungen von IEC/EN61010-1 “Sicherheitsanforderungen für elektrische Ausrüstung für Meßaufgaben, Steuerung und Laborbedarf”, Klasse III, transportabel zur Verwendung in einer Grad 2 verunreinigten Umgebung,...
  • Page 13 Lassen Sie alle Reparaturen durch qualifiziertes Personal durchführen. Eine Liste der Servicestellen finden Sie auf der Rückseite des Handbuches. WARNING Brandgefahr Der Zugriff auf die Netzsicherungen geschieht durch die Entfernung einer Abdeckung. Die Entfernung der Abdeckungen sollte nur von qualifiziertem Personal ausgeführt werden. Zum Schutz gegen Brandgefahr dürfen die Sicherungen nur gegen solche gleichen Typs und Wertes ausgetauscht werden.

  • Page 14: Precauzioni

    Questi termini vengono utilizzati in questo manuale con significati specifici: WARNING riportano informazioni atte ad evitare possibili pericoli alla persona. riportano informazioni per evitare possibili pericoli all'apparecchiatura. riportano importanti informazioni di carattere generale. Simboli di pericolo Il significato del simbolo di pericolo riportato sugli strumenti e nella documentazione è il seguente: Simbolo Condizioni generali d’uso Questo prodotto è...
  • Page 15 Tutte gli interventi sono di competenza del personale qualificato. Vedi elenco internazionale dei Centri di Assistenza in fondo al manuale. WARNING Pericolo d'incendio L'accesso ai fusibili dell'alimentazione avviene attraverso la rimozione di un coperchio esterno. La rimozione dei coperchi dovrebbe essere eseguita solo da personale qualificato. Per una protezione costante contro pericoli d'incendio, utilizzare esclusivamente fusibili del tipo e dalle caratteristiche elettriche prescritte.
  • Page 16 Caratteristiche d’uso Questo strumento è stato progettato e prodotto da Aeroflex generare segnali RF in bassa potenza per provare apparati di radio comunicazione. Se lo strumento non è utilizzato nel modo specificato da Aeroflex, le protezioni previste sullo strumento potrebbero risultare inefficaci. Aeroflex non può...

  • Page 17: Precauciones

    Estos términos tienen significados específicos en este manual: WARNING contienen información referente a prevención de daños personales. contienen información referente a prevención de daños en equipos. contienen información general importante. Símbolos de peligro El significado de los símbolos de peligro en el equipo y en la documentación es el siguiente: Símbolo Condiciones generales de uso Este producto ha sido diseñado y probado para cumplir los requerimientos de la normativa...
  • Page 18 No retire las cubiertas del chasis del instrumento, ya que pudiera resultar dañado personalmente. No existen partes que puedan ser reparadas en su interior. Deje todas las tareas relativas a reparación a un servicio técnico cualificado. Vea la lista de Centros de Servicios Internacionales en la parte trasera del manual.
  • Page 19 Idoneidad de uso Este equipo ha sido diseñado y fabricado por Aeroflex para generar señales de VHF y UHF de bajo nivel de potencia para prueba de equipos de radiocomunicaciones. Si el equipo fuese utilizado de forma diferente a la especificada por Aeroflex, la protección ofrecida por el equipo pudiera quedar reducida.

  • Page 20: General Information

    Versions, options and accessories... 1-6 Introduction The 3002 is a C size, message-based VXI signal generator covering the frequency range 9 kHz to 2.4 GHz. The RF output can be modulated in amplitude, frequency or phase using internal or external signal sources. Additionally pulse modulation may be applied externally. An internal AF source is capable of generating simultaneous two-tone modulation.

  • Page 21: Chapter 1 General Information

    To prevent accidental change of the contents of the stored settings, individual memories or ranges of memories can be write-protected. Triggers Triggering the 3002 Signal Generator may be via the VXI TTL triggers (0 - 7), the trigger command, *TRG message or front panel input. Calibration data All alignment data is digitally derived.

  • Page 22: Performance Data

    Performance data GENERAL DESCRIPTION The 3002 is a synthesized VXI signal generator covering the frequency range 9 kHz to 2.4 GHz. The RF output can be amplitude, frequency, phase or pulse modulated. An internal programmable AF source is capable of generating simultaneous two-tone modulation.
  • Page 23 FREQUENCY MODULATION Deviation range Resolution Accuracy Bandwidth (1 dB) Group delay: Carrier frequency offset Distortion Modulation source Modes Data source Frequency shift: Accuracy Timing jitter Filter PHASE MODULATION Deviation Resolution Accuracy at 1 kHz Bandwidth (3 dB) Distortion Modulation source AMPLITUDE MODULATION (for carrier frequencies <500 MHz, usable to 2 GHz)
  • Page 24 INTERNAL LF GENERATOR Frequency range 0.01 Hz to 20 kHz. Resolution 0.01 Hz for frequencies up to 100 Hz, 0.1 Hz for frequencies up to 1 kHz, 1 Hz for frequencies up to 20 kHz. Frequency accuracy As frequency standard. Distortion Less than 0.1% THD at 1 kHz.
  • Page 25 DIMENSIONS AND WEIGHT Dimensions Weight Versions, options and accessories When ordering please quote the full ordering number information. Ordering numbers 3002 Option 11 46882/226 59000/285 59000/286 Conforms with the protection requirements of the EEC Council Directive 89/336/EEC. Conforms with the limits specified in the following standards:...

  • Page 26: Ec Declaration Of Conformity

    Longacres House, Six Hills Way, Stevenage, Hertfordshire, UK SG1 2AN Herewith declares that the product: Equipment Description: VXI 9 kHz to 2.4 GHz Signal Generator Model No. 3002 Options: is in conformity with the following EC directive(s) (including all applicable amendments) Title: Reference No.
  • Page 27 Logical addresses may be set in the range 1 to 254. Logical address 0 is reserved for slot 0 devices and logical address 255 is reserved for dynamically configured devices. The 3002 VXI Signal Generator does not support dynamic configuration.

  • Page 28: Installing In Vxi Mainframe

    Installing in VXI mainframe This instrument will take up two slots of a C-sized VXI mainframe. Before installation ensure that the mainframe power is off. To install the instrument first set the logical address (see ‘Setting logical address’ above), if required, then slide the module into the mainframe ensuring that the top and bottom card guides are in the slots.

  • Page 29: Cleaning

    Humidity: Front panel connectors and indicators The front panel with its connectors and indicators is shown in Fig. 2-1 below: Fig. 2-1 3002 front panel showing connectors and indicators INSTALLATION AND POWER-UP −40 to +70°C Less than 93% at 40°C...

  • Page 30: Switching On

    50 Ω SMA-type socket. Protected against the application of reverse power of up to RF OUT 50 W. This red LED lights to indicate that the signal generator has failed, or is in the process SYSTEM FAIL of executing its self-test. It indicates the condition of the VXI-bus SYSFAIL line. The LED will continue to be lit whilst the self-test is in progress even when SYSFAIL is inhibited by the commander.
  • Page 31 Introduction An IEEE 488.2 program interface is provided. Ease of use is ensured by careful selection of mnemonics. For example, if carrier frequency and RF level are to be set to 2.54 MHz and -27.3 dBm respectively, the VXI instruction message is: For full information on the IEEE protocols and syntax the IEEE 488.2 standard should be consulted.
  • Page 32 Programming Program messages A message consists of one or more message units. Message units are separated by a semi-colon (;). The whole message is ended by the Program Message Terminator (or End Of Message) defined as one of the following: <newline>...
  • Page 33 <manufacturer>,<model>,<serial number>,<software part number and issue number> where: <manufacturer> is IFR ,<model> is the instrument model number, 3002. <serial number> is the instrument serial number in the form nnnnnn/nnn, where n is an ASCII digit in the range 0 to 9.
  • Page 34 *RST *TST? *OPC *OPC? *WAI *TRG *STB? *SRE <nrf> *SRE? *ESR? *ESE <nrf> *ESE? *CLS The IEEE 488.2 Device Clear function only affects the remote functions. The input and output buffers are cleared and the instrument put into a state to accept new messages. Earlier versions of IEEE 488.1 put the instrument functions into a defined state, but this is now performed by the *RST common command.

  • Page 35: Default Settings

    Default settings The instrument is reset to the factory default settings in the following cases: (1) At power-up. (2) Following execution of the RCL 999 command. (3) Following execution of the * RST command. The default settings are shown in Table 3-1 . Carrier frequency RF level Status:...
  • Page 36 Carrier frequency These commands enable you to set the carrier frequency in the range 9 kHz to 2.4 GHz to a resolution of 1 Hz. You can adjust the frequency in steps by setting the size of the step and then stepping the frequency up or down.
  • Page 37 RF level These commands enable you to set the RF level in the range -137 to +25 dBm to a resolution of 0.1 dB. You can adjust the level in steps by setting the size of the step and then stepping the level up or down.
  • Page 38 :UNITS Data type : Allowed suffices : Default suffix : Examples: :LIMIT :VALUE Data type : Allowed suffices : Default suffix : :ENABLE :DISABLE :OFFS :VALUE Data type : Allowed suffices : Default suffix : :ENABLE :DISABLE :SAVE RFLV? Examples: RFLV:LIMIT? Examples: RFLV:OFFS?
  • Page 39 Output control These commands allow you to download and store settings without the output changing. OUTPUT :DISABLE :ENABLE OUTPUT? [not used alone] Allows user to download and store settings in the normal way without the output of the instrument changing until the OUTPUT:ENABLE command is received.
  • Page 40 Modulation mode These commands allow you to select the modulation mode between amplitude, frequency and phase modulation as well as binary (2-level) and quadrature (4-level) frequency shift keying. Binary FSK results from a logic level digital signal applied to the TRIGGER INPUT socket. Quadrature FSK is achieved using both the TRIGGER INPUT and PULSE INPUT sockets.
  • Page 41 Modulation control These commands allow you to switch ALL modulation ON or OFF. :OFF MOD? [not used alone] Turn modulation globally ON Turn modulation globally OFF Examples: MOD:ON MOD:OFF Prepares message containing information on Modulation Control in the following format: :MOD:<status>...
  • Page 42 Frequency modulation (and FSK) These commands enable you to select frequency modulation either as a single modulation or as the sum of two signals, to set the deviation rate, to switch the modulation on and off and to perform DC FM nulling.
  • Page 43 :PHASE Data type : Allowed suffices : Default suffix : Examples: DCFMNL Data type : Allowed suffices : Default suffix : Example: FM? or FM1? or FM2? Example: FM:MODF? or FM1:MODF? or FM2:MODF? Example: Set phase offset of FM2 relative to FM1 Decimal Numeric Program Data FM2:MODF:VALUE 1.5KHZ;SIN FM:MODF:PHASE 1.2DEG...

  • Page 44: Phase Modulation

    Phase modulation These commands enable you to select phase modulation either as a single modulation or as the sum of two signals, to set the deviation rate in radians, and to switch the modulation on and off. You can set the modulation oscillator frequency and select between sine, triangle and square waveforms. Also the phase difference of modulation oscillator channel 2 relative to channel 1 can be offset in degrees.
  • Page 45 PM? or PM1? or PM2? Example: PM:MODF? or PM1:MODF? or PM2:MODF? Example: Prepares message containing information on Phase Modulation setting in one of the following formats: :PM:DEVN <nr2>;<src>;<status>;INC <nr2> :PM1:DEVN <nr2>;<src>;<status>;INC <nr2> :PM2:DEVN <nr2>;<src>;<status>;INC <nr2> where <src> is a program mnemonic representing the source of the modulation signal and <status>...

  • Page 46: Amplitude Modulation

    Amplitude modulation These commands enable you to select amplitude modulation either as a single modulation or as the sum of two signals, to set the AM depth as a percentage, and to switch the modulation on and off. You can set the modulation oscillator frequency and select between sine, triangle and square waveforms.
  • Page 47 AM? or AM1? or AM2? Example: AM:MODF? or AM1:MODF? or AM2:MODF? Example: Prepares message containing information on Amplitude Modulation setting in one of the following formats: :AM:DEPTH <nr2>;<src>;<status>;INC <nr2> :AM1:DEPTH <nr2>;<src>;<status>;INC <nr2> :AM2:DEPTH <nr2>;<src>;<status>;INC <nr2> where <src> is a program mnemonic representing the source of the modulation signal and <status>...

  • Page 48: Pulse Modulation

    Pulse modulation You can use these commands to switch the pulse modulation on and off when it is part of the modulation mode. When ON is selected the carrier is modulated by the logic level applied to the PULSE INPUT socket. Note: the :PULSE:ON and :PULSE:OFF commands are invalid when used with Option 11 (fast pulse).
  • Page 49 Memory stores Carrier store The non-volatile carrier frequency store has 100 locations numbered 0 to 99 for the storage of carrier frequency only. This store can be used to apply a set of test conditions to a range of frequencies. For example, if you wish to use the same modulation at a variety of frequencies you can use the carrier store to set the instrument to each of the frequencies in turn.
  • Page 50 Memory-recall There are three types of recall: carrier, full and RAM. Both carrier and full stores are non-volatile. The contents of the RAM store are lost when the instrument is switched off. Carrier recall The non-volatile carrier frequency store has 100 locations numbered 0 to 99 for carrier frequency only.
  • Page 51 Memory - erase ERASE :CFRQ :FULL :RAM :ALL Memory - sequencing These commands enable you to step through the memory stores in a sequence. For triggering, refer to 'Memory-triggering' below. MSEQ :MODE :SEQ1...:SEQ9 :START :STOP MSEQ? MSEQ:SEQ1? MSEQ:SEQ9? [not used alone] Erase all Carrier Freq Stores (0-99) Erase all Full Stores (100-199) Erase all RAM Stores (200-299)
  • Page 52 Memory - triggering For external triggering methods, refer to 'Trigger source' at the end of this section. MTRIG :OFF MTRIG? Memory - protection These commands enable you to either write protect a block of stores (or a single store) to prevent accidental overwriting or to unprotect it.

  • Page 53: Sweep Operation

    Sweep operation These commands allow you to configure the instrument as a swept carrier signal generator where you define the start and stop frequencies, the step size and time per step. (Note that these commands also appear under 'Carrier frequency'.) To make these commands operational they must first be enabled by the CFRQ:MODE SWEPT command.

  • Page 54: Sweep Mode

    Sweep mode To make these commands operational they must first be enabled by the CFRQ:MODE SWEPT command. These commands enable you to select the sweep mode between single shot and continuous sweep and between linear and logarithmic sweep. You can also select the triggering mode from the following: OFF Disable the trigger.
  • Page 55 Sweep control To make these commands operational they must first be enabled by the CFRQ:MODE SWEPT command. These commands enable you to start the sweep in the selected increments from the chosen reference frequency, pause the sweep, step the sweep up or down from the paused position, and continue the sweep.
  • Page 56 Trigger source These commands enable you to disable the trigger, select the trigger source from one of the eight VXI backplane triggers or to select an external trigger. For external triggering, connect a TTL trigger signal to the TRIGGER INPUT connector. Ensure however, that this socket is not disabled for your application by a higher priority mode having been selected.

  • Page 57: Miscellaneous Commands

    Miscellaneous commands Attenuator hold The ATTEN:LOCK command allows you to reduce the RF level by at least another 10 dB without the step attenuator operating. ATTEN :LOCK :UNLOCK ATTEN? Table 3-2 below applies to software versions 1.03 onwards. Maximum level with attenuator lock on will reduce if AM or pulse modulation is applied.
  • Page 58 Power-up options These commands allow you to select between powering up with the factory settings (given in Table 3-1) or with the settings of your choice stored in one of the full memory locations (range 100 to 199) or carrier frequency memory locations (range 0 to 99). POWUP :MODE :MEM...
  • Page 59 Operating hours These commands enable you to find out either the total operating hours or the elapsed operating hours since the last reset, as well as to reset the elapsed time to zero. ELAPSED :RESET ELAPSED? OPER? Frequency standard selection These commands enable you to select a 10 MHz output to provide a standard for use with associated equipment, as well as enabling you to select a standard (either external or internal) for use by the instrument.

  • Page 60: Status Byte

    Status byte The Status Byte provides information about events and conditions within the instrument. It may be read by a conventional Serial Poll or its value obtained as a response to the *STB? query. Bits 0 to 5 and bit 7 are each single bit Summary Messages which may be of two types (or not used at all). Queue Status - a '1' indicates that an associated Queue is non-empty and has data available to be read.

  • Page 61: Status Byte

    Status data structure - register model Below is a generalized model of the Register Set which funnels the monitored data into a single summary bit to set the appropriate bit in the Status Byte. Condition Register Transition Filter # Event Register Event Enable...
  • Page 62 Standard event registers This register is defined by IEEE 488.2 and each bit has the meaning shown below:- Condition Register Register Read/Write Commands Transition Filter # Status Register *ESR? *ESE *ESE? <esb> <pon> <urq> <cme> <exe> <dde> <qye> <rqc> <opc> <esb>...
  • Page 63 Hardware event registers This is a device dependent register and the bits have meanings as shown in the list at the bottom of the page. Condition Register HCR? Transition Filter # Register Read/Write Commands Status Register HSR? HSE? <hsb> reverse power protection tripped fractional-n loop low fractional-n loop high external standard missing...
  • Page 64 Coupling event registers This is a device dependent register and the bits have meanings as shown in the list at the bottom of the page. Condition Register CCR? Transition Filter # Register Read/Write Commands Status Register CSR? CSE? <csb> RF level restricted by requested AM depth not used not used AM2 depth restricted by requested AM1 depth...
  • Page 65 Instrument event registers This is a device dependent register and the bits have meanings as shown in the list at the bottom of the page. Condition Register SCR? Transition Filter # Register Read/Write Commands Status Register SSR? SSE? <ssb> d 4 - d 15 <ssb>...
  • Page 66 Queue flag details Input from all Error Conditions Error Queue Response Output Queue Data from Output Queue The <mav> status bit is set when one or more bytes are available to be read from the Output Queue. The <erb> status bit is set when one or more errors are present in the Error Queue. The ERROR? query will place a nr1 and string response message in the Output Queue representing the error at the head of the queue.
  • Page 67 Status byte when read by *STB? Register Read Command *STB? *SRE *SRE? Register Read/Write Commands # Bit 6 in this register ignores data sent by *SRE and always returns 0 in response to *SRE? <rqs>, <esb> and <mav> are defined in IEEE 488.2 <erb>...
  • Page 68 Status byte when read by serial poll *SRE *SRE? Register Read/Write Commands # Bit 6 in this register ignores data sent by *SRE and always returns 0 in response to *SRE? <erb> is a device defined queue summary bit indicating that the error queue is non-empty.
  • Page 69 Summary of status reporting commands and queries *CLS *ESE<nrf> *ESE? *ESR? *SRE<nrf> *SRE? *STB? CCR? CSE<nrf> CSE? CSR? HCR? HSE<nrf> HSE? HSR? SCR? SSE<nrf> SSE? SSR? <nrf> All of the above queries respond with a nr1 numeric format. Clears Status Registers and the Error Queue Writes to Standard Event Enable Register Reads from Standard Event Enable Register Reads from Standard Event Status Register...

  • Page 70: Error Messages

    Error handling Error messages are divided into four groups: Background errors Foreground errors IEEE 488.2 errors Fatal errors Background errors: These are generated due to an incorrect operating condition within the instrument. These errors are generated automatically to warn the operator. For example if the reverse power protection circuit should trip error 500 (RPP tripped) will be placed in the error queue.
  • Page 71 Table 3-3 Background errors (500 - 599) in priority order Main RAM faulty RPP tripped Fractional-N loop high External std frequency low VCXO loop low Amplitude modulator unleveled Power Amp Fail or Unterminated ALC too low RF level limited by AM FM2 limited by FM1 Main PROM faulty Fractional-N loop low...
  • Page 72 Table 3-4 Foreground errors (0 - 399) No error Pad cal checksum Freq std checksum Mod ref checksum Mod amp checksum FM cal factor checksum ΦM cal factor checksum AM cal checksum Image checksum Frac-N out of lock at <freq> VTF tune cal fail at <freq>...
  • Page 73 Table 3-5 IEEE 488.2 errors (400 - 499) Syntax error Numeric syntax Illegal data Incorrect data type Character data not unique Block size Terminator expected Unit not expected Header not unique Sub-command not allowed Query not allowed with header Query INTERRUPTED Query DEADLOCK Unrecognised mnemonic Data expected...

  • Page 74: Chapter 4 Technical Description

    TECHNICAL DESCRIPTION Introduction The 3002 VXI Signal Generator is a VXI module which covers a wide range of frequencies from 9 kHz to 2.4 GHz. Output levels from -137 dBm to +25 dBm are available. These are C size, 2- slot wide plug-in modules that require a VXI bus mainframe for operation.
  • Page 75 HARMONIC ¸2 ¸2 FILTERS 1.2-2.4GHz x 3, 4, 5 HARMONICS 100MHz STEP ATTENUATOR 400 TO FM/ M 533 MHz 10dB FRAC SYNTH 5MHz VCXO LOOP 10MHz- 2.4GHz LEVEL LEVEL DEPTH F MOD DEV'N CONV 10MHz SELECT 1 or 10 MHz in 10 MHz out FREQ STD Fig.

  • Page 76: Chapter 5 Acceptance Testing

    ACCEPTANCE TESTING Introduction The test procedures in this chapter enable you to verify that the electrical performance of the signal generator complies with the Performance Data given in Chapter 1. For convenience, the test equipment and specification for each test are summarized before the test procedure. Apart from the UUT, (Unit Under Test), no specific set-up procedures will be included for the test equipment unless the measurement is dependent on specific instrument settings or special measurement techniques.

  • Page 77: Recommended Test Equipment

    Vero 203-304014B VXI Mainframe Racal 1260-00C GPIB Slot 0 IFR 3002 executable Soft Front Panel, part number 59000-286 * Option 037 is necessary to measure SSB phase noise. ** The distortion option of the 2305 Modulation Meter allows modulation distortion tests to be carried out with greater ease.

  • Page 78: Test Procedures

    Each test procedure relies on the UUT being set to its power-up conditions. Reset the UUT after each test procedure by setting: At the end of this chapter are a set of results tables which give all the test points for each of the tests.

  • Page 79: Test Procedure

    RF level frequency response Test procedure Perform AUTO ZERO and AUTO CAL on the power meter. Connect the test equipment as shown in Fig. 5-1. On the UUT set: Carr Freq RF Level Record the output level measured by the power meter against each of the carrier frequencies shown in Table 5-1 checking that the results are within specification.

  • Page 80: Test Procedures

    Attenuator accuracy Test procedure Connect the test equipment as shown in Fig. 5-2. On the UUT set: Carr freq RF Level Set ∆ Tune the receiver to 2.6 MHz and record the output level measured in Table 5-9 checking that the result is within specification. Set the UUT RF level to −4.1 dBm.

  • Page 81: Test Equipment

    Carrier frequency accuracy This check provides a conventional method of checking the signal generator frequency locking circuitry. It will confirm correct operation of phase locked loops and dividers. Overall accuracy is determined by the instrument’s internal reference standard. Specification Range Resolution Accuracy Test equipment...

  • Page 82: Spectral Purity

    Spectral purity Specification Harmonics Non-harmonics (offsets > 3 kHz) Residual FM (FM off) SSB phase noise Test equipment Description Spectrum analyzer Measuring receiver Signal generator Harmonics Test procedure Press CAL on the spectrum analyzer. Connect the test equipment as shown in Fig. 5-4. On the UUT set: Carr Freq RF Level...
  • Page 83 Measure the level of the second and third harmonics on the spectrum analyzer at each of the carrier frequencies shown in Table 5-15 checking that the results are within specification. Set the UUT RF level to +7 dBm and repeat (4) using Table 5-16. Set the UUT RF level to +13 dBm and repeat (4) using Table 5-17.
  • Page 84 SSB phase noise Test procedure Connect the test equipment as shown in Fig. 5-6. On the UUT set: Carr Freq RF Level On the measuring receiver: Tune the receiver to 470 MHz. Select 24.0 SPCL to enter selective power measurement mode. Select 23.1 SPCL to set the LO to external.
  • Page 85 Internal FM Specification Deviation range Resolution Accuracy Bandwidth (1 dB) Carrier frequency offset Distortion Test equipment Description Modulation meter 50 Ω load (termination) Audio analyzer Function generator FM deviation and distortion Test procedure 0 to 100 kHz. 3 digits or 1 Hz. ±5% at 1 kHz modulation rate.
  • Page 86 Connect the test equipment as shown in Fig. 5-7. On the UUT set: Carr Freq RF Level FM1 Level Mod On Source On On the modulation meter select CAL, FM, 50 Hz Þ 15 kHz filter. Measure the FM accuracy and distortion at the carrier frequencies shown in Table 5-22 checking that the results are within specification.
  • Page 87 Carrier error Test procedure Connect the test equipment as shown in Fig. 5-7. On the UUT set: Carr Freq RF Level On the modulation meter select CARRIER ERROR. The FREQUENCY display will read 0.00 kHz. On the UUT set: Mod Mode FM1 Level Source On Mod On...
  • Page 88 On the modulation meter check that the FM reading is between 47.5 kHz and 52.5 kHz, then set a reference using the relative function. Set the function generator to each of the frequencies shown in Table 5-25 checking that the relative readings on the modulation meter are within specification.
  • Page 89 Phase modulation Specification Deviation Resolution Accuracy at 1 kHz Bandwidth (3 dB) Distortion Test equipment Description Modulation meter Phase modulation Test procedure Connect the test equipment as shown in Fig. 5-7. On the UUT set: Carr Freq RF Level Source On Mod Mode PM1 Level On the modulation meter, select CAL, Φ...
  • Page 90 Using the figure recorded in (4) as a reference, calculate the change in response at each modulation frequency using the formula: Check that the results are within the specifications shown in Table 5-29. Amplitude modulation Specification Range Resolution Accuracy Bandwidth (1 dB) Distortion Test equipment Description...
  • Page 91 Set the UUT to RF level +19 dBm and repeat (2) to (5) using Table 5-33. AM scale shape Test procedure Connect the test equipment as shown in Fig. 5-7. On the UUT set: Carr Freq RF Level Mod Mode Source On Mod On AM1 Level...
  • Page 92 0 Hz (DC) To measure the AM depth at DC, it will be necessary to use the DC offset facility on the function generator proceeding as follows: Function generator OUTPUT Temporary connection Fig. 5-9 0 Hz external AM and distortion test set-up Connect the test equipment as shown in Fig.
  • Page 93 Pulse modulation Does not apply to instruments fitted with Option 11 — refer to Annex A. Specification Carrier frequency range RF level range RF level accuracy ON/OFF ratio Rise and fall time Test equipment Description Power meter Spectrum analyzer Oscilloscope Function generator Pulse modulation RF level frequency response Test procedure...
  • Page 94 Set the UUT RF level to +14 dBm and repeat (5) using Table 5-40. Pulse modulation on/off ratio Function generator OUTPUT Test procedure Press CAL on the spectrum analyzer. Connect the test equipment as shown in Fig. 5-11. On the UUT set: Carr Freq RF Level Pulse ON...
  • Page 95 Pulse modulation rise and fall time Function generator Test procedure Connect the test equipment as shown in Fig. 5-12. On the UUT set: Carr Freq RF Level Pulse ON Set the function generator to produce 10 kHz, 0 V to +5 V square wave. Adjust the oscilloscope controls such that the rise time of the envelope can be measured.
  • Page 96 Modulation oscillator frequencies Test procedure Connect the test equipment as shown in Fig. 5-13. On the UUT set: FM1 Freq Record the frequency measured by the counter against each of the modulation oscillator frequencies shown in Table 5-43. Modulation oscillator distortion and LF output flatness Test procedure Connect the test equipment as shown in Fig.
  • Page 97 Measure the distortion on the audio analyzer checking that the result is within the specification shown in Table 5-44. Measure the absolute level on the audio analyzer (in dBm) and record this level as a reference. Set the UUT mod source to each of the frequencies shown in Table 5-44. Subtract the level measured on the audio analyzer at each frequency from that recorded in (4) checking that the results are within specification.
  • Page 98 ACCEPTANCE TEST RESULTS TABLES For 3002 Signal Generator, serial number _ _ _ _ _ _ / _ _ _ Carrier frequency (MHz) 0.03 0.33 1020 1140 1200 1201 1260 1320 1380 1440 1500 1560 1620 1680 1740 1800 1860...
  • Page 99 Table 5-2 RF output at +7 dBm Carrier frequency RF level min. (MHz) (dBm) 0.03 0.33 1020 1140 1200 1201 1260 1320 1380 1440 1500 1560 1620 1680 1740 1800 1860 1920 1980 2040 2100 2160 2220 2340 2400 Result (dBm) _______ _______ _______...
  • Page 100 Table 5-3 RF output at +25 dBm Carrier frequency RF level min. (MHz) (dBm) 0.03 0.33 1020 1140 1200 1201 1260 1320 1380 1440 1500 1560 1620 1680 1740 1800 1860 1920 1980 2040 2100 2160 2220 2340 2400 Result (dBm) _______ _______ _______...
  • Page 101 Table 5-4 ALC linearity at 2.5 MHz RF level (dBm) RF level min. (dBm) −4 −5 −4 −2 −3 −1 −2 −1 12.1 +11.1 12.2 +11.2 12.3 +11.3 12.4 +11.4 12.5 +11.5 12.6 +11.6 12.7 +11.7 12.8 +11.8 12.9 +11.9 5-26 Result (dBm) RF level max.
  • Page 102 Table 5-5 ALC linearity at 950 MHz RF level (dBm) RF level min. (dBm) −4 −5 −3 −4 −2 −3 −1 −2 −1 12.1 +11.1 12.2 +11.2 12.3 +11.3 12.4 +11.4 12.5 +11.5 12.6 +11.6 12.7 +11.7 12.8 +11.8 12.9 +11.9 5-27 Result (dBm)
  • Page 103 Table 5-6 ALC linearity at 1200 MHz RF level (dBm) RF level min. (dBm) −4 −5 −3 −4 −2 −3 −1 −2 −1 12.1 +11.1 12.2 +11.2 12.3 +11.3 12.4 +11.4 12.5 +11.5 12.6 +11.6 12.7 +11.7 12.8 +11.8 12.9 +11.9 5-28 Result (dBm)
  • Page 104 Table 5-7 ALC linearity at 1900 MHz RF level (dBm) RF level min. (dBm) −4 −6 −3 −5 −2 −4 −1 −3 −2 −1 12.1 +10.1 12.2 +10.2 12.3 +10.3 12.4 +10.4 12.5 +10.5 12.6 +10.6 12.7 +10.7 12.8 +10.8 12.9 +10.9 5-29...
  • Page 105 Table 5-8 ALC linearity at 2400 MHz RF level (dBm) RF level min. (dBm) −4 −6 −3 −5 −2 −4 −1 −3 −2 −1 12.1 +10.1 12.2 +10.2 12.3 +10.3 12.4 +10.4 12.5 +10.5 12.6 +10.6 12.7 +10.7 12.8 +10.8 12.9 +10.9 5-30...
  • Page 106 Table 5-9 Attenuator test at 2.6 MHz RF level (dBm) RF level min. (dBm) −1 −4 −5 −5 −6 −15 −16 −16 −17 −26 −27 −27 −28 −37 −38 −38 −39 −48 −49 −49 −50 −59 −60 −60 −61 −70 −71 −71 −72...
  • Page 107 Table 5-10 Attenuator test at 480.1 MHz RF level (dBm) RF level min. (dBm) −1 −4 −5 −5 −6 −15 −16 −16 −17 −26 −27 −27 −28 −37 −38 −38 −39 −48 −49 −49 −50 −59 −60 −60 −61 −70 −71 −71 −72...
  • Page 108 Table 5-11 Attenuator test at 1199 MHz RF level (dBm) RF level min. (dBm) −1 −4 −5 −5 −6 −15 −16 −16 −17 −26 −27 −27 −28 −37 −38 −38 −39 −48 −49 −49 −50 −59 −60 −60 −61 −70 −71 −71 −72...
  • Page 109 Table 5-12 Attenuator test at 1875.1 MHz RF level (dBm) RF level min. (dBm) −2 −4 −6 −5 −7 −15 −17 −16 −18 −26 −28 −27 −29 −37 −39 −38 −40 −48 −50 −49 −51 −59 −61 −60 −62 −70 −72 −71 −73...
  • Page 110 Table 5-13 Attenuator test at 2399 MHz RF level (dBm) RF level min. (dBm) −2 −4 −6 −5 −7 −15 −17 −16 −18 −26 −28 −27 −29 −37 −39 −38 −40 −48 −50 −49 −51 −59 −61 −60 −62 −70 −72 −71 −73...
  • Page 111 Table 5-14 Carrier frequency tests Frequency (MHz) Frequency min. (MHz) 0.009 − − 9.999999 − 18.75 − 37.5 − − − − − 1200 1199.99988 1200.000001 − 1230 − 1250 − 1260 − 1320 − 1350 − 1500 − 1599.999999 −...
  • Page 112 Table 5-15 Carrier harmonic tests at − 4 dBm Carrier 2nd harmonic frequency (MHz) max. level (dBc) 0.01 −30 −30 −30 −30 −30 18.7 −30 18.8 −30 37.4 −30 37.6 −30 74.9 −30 75.1 −30 −30 −30 −30 −30 −30 −30 −30 −30...
  • Page 113 Table 5-16 Carrier harmonic tests at +7 dBm Carrier 2nd harmonic frequency (MHz) max. level (dBc) 0.01 −30 −30 −30 −30 −30 18.7 −30 18.8 −30 37.4 −30 37.6 −30 74.9 −30 75.1 −30 −30 −30 −30 −30 −30 −30 −30 −30 1200...
  • Page 114 Table 5-17 Carrier harmonic tests at +13 dBm Carrier 2nd harmonic frequency (MHz) max. level (dBc) 0.01 −25 −25 −25 −25 −25 18.7 −25 18.8 −25 37.4 −25 37.6 −25 74.9 −25 75.1 −25 −25 −25 −25 −25 −25 −25 −25 −25 1200...
  • Page 115 Table 5-18 Carrier harmonic tests at +19 dBm Carrier 2nd harmonic frequency (MHz) max. level (dBc) 0.01 −25 −25 −25 −25 −25 18.7 −25 18.8 −25 37.4 −25 37.6 −25 74.9 −25 75.1 −25 −25 −25 −25 −25 −25 −25 −25 −25 1200...
  • Page 116 Table 5-19 Carrier non-harmonic tests Sub-harmonic output Carrier Non- frequency harmonic harmonic (MHz) frequency level (dBc) (MHz) 1201 800.6667 1201 400.3333 1599 1066 1599 1601 1200.75 1601 800.5 1999 1499.25 1999 999.5 2001 1600.8 2001 1200.6 2400 1920 2400 1440 100.000016 Carrier frequency 1 GHz...
  • Page 117 Table 5-22 Internal FM deviation and distortion tests at 100 kHz deviation Carrier FM deviation frequency min. (kHz) (MHz) 10.144 10.292 10.441 10.592 10.746 10.901 11.059 11.22 11.382 11.547 11.714 11.884 12.056 12.23 12.5 12.587 12.77 12.995 13.143 13.333 Table 5-23 FM scale shape tests at 15 MHz carrier FM deviation (kHz) FM Deviation Result (kHz)
  • Page 118 Table 5-24 Carrier error test at 1.2 GHz, FM deviation 100 kHz Carrier error <1 kHz Table 5-25 External FM frequency response (ALC off, DC coupled), 50 kHz deviation Modulation Response frequency (kHz) level min. (dB) −1 0.03 −1 −1 −1 −...
  • Page 119 Table 5-26 External FM frequency response (ALC on), 10 kHz deviation, 0.75 V input Modulation frequency (kHz) 0.02 Table 5-27 External FM frequency response (ALC on), 10 kHz deviation, 1.25 V input Modulation Response frequency (kHz) level min. (dB) 0.02 −1 −1 −1...
  • Page 120 Table 5-29 Internal Φ M flatness test Modulation frequency (kHz) Table 5-30 Internal AM depth and distortion tests at − 4 dBm AM depth 30% Carrier min. Result frequency (MHz) 28.5 _____ 28.5 _____ 28.5 _____ 28.5 _____ 28.5 _____ 28.5 _____ 28.5...
  • Page 121 Table 5-32 Internal AM depth and distortion tests at +13 dBm AM depth 30% Carrier min. Result frequency (MHz) 28.5 _____ 28.5 _____ 28.5 _____ 28.5 _____ 28.5 _____ 28.5 _____ 28.5 _____ 28.5 _____ 28.5 _____ Table 5-33 Internal AM depth and distortion tests at +19 dBm AM depth 30% Carrier min.
  • Page 122 Table 5-34 AM scale shape test AM depth (%) Table 5-35 External AM frequency response (ALC off, DC coupled), RF level − 4 dBm Modulation frequency (kHz) Table 5-36 External AM frequency response (ALC off, DC coupled), RF level +7 dBm Modulation frequency (kHz) AM depth min.
  • Page 123 Table 5-37 External AM frequency response (ALC off, DC coupled), RF level +13 dBm Modulation frequency (kHz) Table 5-38 Pulse modulation RF output at − 7 dBm Carrier frequency RF level min. (MHz) 1020 1140 1200 1201 1260 1380 1500 1620 1740 1860...
  • Page 124 Table 5-39 Pulse modulation RF output at +4 dBm Carrier frequency RF level min. (MHz) (dBm) +2.5 +2.5 +2.5 +2.5 +2.5 +2.5 +2.5 +2.5 +2.5 1020 +2.5 1140 +2.5 1200 +2.5 1201 +1.5 1260 +1.5 1380 +1.5 1500 +1.5 1620 +1.5 1740 +1.5...
  • Page 125 Table 5-40 Pulse modulation RF output at +14 dBm Carrier frequency RF level min. (MHz) (dBm) +12.5 +12.5 +12.5 +12.5 +12.5 +12.5 +12.5 +12.5 +12.5 1020 +12.5 1140 +12.5 1200 +12.5 1201 +11.5 1260 +11.5 1380 +11.5 1500 +11.5 1620 +11.5 1740 +11.5...
  • Page 126 Table 5-42 Pulse modulation rise and fall time test Rise time Fall time Table 5-43 Modulation oscillator frequency tests Frequency (Hz) 1000 20000 Table 5-44 Modulation oscillator distortion and LF output tests Mod. oscillator Response frequency (Hz) level min. (dB) −1 _______ _______...

  • Page 127: General Description

    OPTION 11 FAST PULSE MODULATION General description Option 11 adds the ability for the instrument to internally generate a fast pulse modulated waveform from logic levels applied to the PULSE INPUT socket. The pulse modulator is suitable for generating fast pulses with high isolation for applications in radar and EMI. It may be used in conjunction with other forms of modulation to form composite signals.
  • Page 128 Pulse modulation RF level frequency response Test procedure Perform AUTO ZERO and AUTO CAL on the power meter. Connect the test equipment as shown in Fig. A-1. On the UUT set: Carr Freq RF Level Pulse ON Set the function generator to provide +5 V DC. The RF output will now be enabled. Record the output level measured by the power meter against each of the carrier frequencies shown in Table A-1, checking that the results are within specification.
  • Page 129 Test procedure Press CAL on the spectrum analyzer. Connect the test equipment as shown in Fig. A-2. On the UUT set: Carr Freq RF Level Pulse ON Set the function generator to provide +5 V DC. The RF output will now be enabled. Tune the spectrum analyzer to the same frequency as the signal generator.
  • Page 130 ACCEPTANCE TEST RESULTS TABLES for Option 11 (fast pulse modulator) Table A-1 Pulse mod. RF output at −7 dBm Carrier Frequency RF level min. (MHz) (dBm) −8.25 −8.25 −8.25 −8 −8 −8 −8 −8 −8 −8 −8 −8 −8 −8 1110 −8 1200...
  • Page 131 Table A-2 Pulse mod. RF output at +0 dBm Carrier frequency RF level min. (MHz) (dBm) −1.25 −1.25 −1.25 −1 −1 −1 −1 −1 −1 −1 −1 −1 −1 −1 1110 −1 1200 −1 1201 −2 1290 −2 1410 −2 1530 −2 1650...
  • Page 132 Table A-3 Pulse mod. RF output at +16 dBm Carrier frequency RF level min. (MHz) (dBm) +14.75 +14.75 +14.75 1110 1200 1201 1290 1410 1530 1650 1770 1890 2010 2130 2250 2370 2400 Annex-A-6 Result (dBm) RF level max. (dBm) _______ +17.25 _______...
  • Page 133 Table A-4 Pulse modulation on/off ratio test Carrier frequency Pulse mod. on/off (MHz) ratio (dB) 0.145 10.1 1001 1199 1501 1801 2101 2399 Table A-5 Pulse modulation rise and fall time test Rise time <20 ns Fall time <20 ns Annex-A-7 Measured value (dB) >80...
  • Page 134 AEROFLEX INTERNATIONAL LTD. SOFTWARE LICENCE AND WARRANTY This document is an Agreement between the user of this Licensed Software, the Licensee, and Aeroflex International Limited, the Licensor. By opening this Software package or commencing to use the software you accept the terms of this Agreement. If you do not agree to the terms of this Agreement please return the Software package unopened to Aeroflex International Limited or do not use the software.
  • Page 135 The above Warranty does not apply to: 6.1 Defects resulting from software not supplied by Aeroflex, from unauthorised modification or misuse or from operation outside of the specification. 6.2 Third party produced Proprietary Software which Aeroflex may deliver with its products, in such case the third party Software Licence Agreement including its warranty terms shall apply.
  • Page 136 CHINA Beijing Tel: [+86] (10) 6539 1166 Fax: [+86] (10) 6539 1778 CHINA Shanghai Tel: [+86] (21) 5109 5128 Fax: [+86] (21) 5150 6112 FINLAND Tel: [+358] (9) 2709 5541 Fax: [+358] (9) 804 2441 FRANCE Tel: [+33] 1 60 79 96 00 Fax: [+33] 1 60 77 69 22 GERMANY Tel: [+49] 8131 2926-0...