Page 1 To buy, sell, rent or trade-in this product please click on the link below: http://www.avionteq.com/IFR-Aeroflex-2023A-2023B-Series-Signal-Generator.aspx www.avionteq.com AM/FM SIGNAL GENERATORS 2023A, 2023B, 2025 Operating Manual Document part no. 46892/373...
Page 2 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. (hereafter referred to throughout the document as ‘Aeroflex’). Printed in the UK Manual part no.
Page 3: About This Manual
About this manual This manual explains how to use the 2023A, 2023B and 2025 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 specifications.
Page 4: Table Of Contents
CONTENTS Preface Precautions Chapter 1 GENERAL INFORMATION Chapter 2 INSTALLATION Chapter 3 PRINCIPLES OF OPERATION Chapter 4 LOCAL OPERATION Chapter 5 REMOTE OPERATION Chapter 6 TECHNICAL DESCRIPTION Chapter 7 ACCEPTANCE TESTING OPTION 7 − FAST PULSE MODULATION Annex A OPTION 11 − FAST PULSE AND HIGH POWER Annex B Annex C OPTION 100 —...
Page 5 Preface Patent protection The 2023A, 2023B and 2025 Signal Generators are protected by the following patents: EP 0322139 GB 2214012 US 4870384 EP 0125790 GB 2140232 US 4609881...
Page 6: General Information
Do not remove instrument covers as this may result in personal injury. There are no user- serviceable parts inside. Refer all servicing to qualified personnel. See list of Service Centers at www.aeroflex.com.
Page 7 PRECAUTIONS Fuses Note that the internal supply fuse is in series with the live conductor of the supply lead. If connection is made to a 2-pin unpolarized supply socket, it is possible for the fuse to become transposed to the neutral conductor, in which case, parts of the equipment could remain at supply potential even after the fuse has ruptured.
Page 8 This equipment has been designed and manufactured by Aeroflex to generate low-power RF signals for testing radio communications apparatus. If the equipment is not used in a manner specified by Aeroflex, the protection provided by the equipment may be impaired.
Page 9 PRECAUTIONS Précautions Les termes suivants ont, dans ce manuel, des significations particulières: WARNING contient des informations pour éviter toute blessure au personnel. 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...
Page 10 à l'intérieur. Faites effectuer toute réparation par du personnel qualifié. Contacter un des Centres de Maintenance Internationaux à www.aeroflex.com. Fusibles Notez que le fusible d’alimentation interne est en série avec la phase du câble d’alimentation. Si la prise d’alimentation comporte deux bornes non polarisées, il est possible de connecter le fusible au...
Page 11 Utilisation Cet équipement a été conçu et fabriqué par Aeroflex pour générer des signaux RF de faible puissance pour le test d'appareils de radio communications. La protection de l'équipement peut être altérée s'il n'est pas utilisé dans les conditions spécifiées par Aeroflex.
Page 12 PRECAUTIONS 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 Gefahrenart Beziehen Sie sich auf die Bedienungsanleitung wenn das...
Page 13 PRECAUTIONS Lassen Sie alle Reparaturen durch qualifiziertes Personal durchführen. Eine Liste der Servicestellen finden Sie an www.aeroflex.com. Sicherungen Die interne Sicherung in der Spannungszuführung ist in Reihe mit der spannungsführenden Zuleitung geschaltet. Bei Verbindung mit einer zweiadrigen, nicht gepolten Steckdose kann die Sicherung in der Masseleitung liegen, so daß...
Page 14 Dieses Gerät wurde von Aeroflex entwickelt und hergestellt um HF Signale geringer Leistung zum Test von Kommunikationseinrichtungen zu erzeugen. Sollte das Gerät nicht auf die von Aeroflex vorgesehene Art und Weise verwendet werden, kann die Schutzfunktion des Gerätes beeinträchtigt werden.
Page 15 PRECAUTIONS 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 Tipo di pericolo...
Page 16 PRECAUTIONS Tutte gli interventi sono di competenza del personale qualificato. Vedi elenco internazionale dei Centri di Assistenza in www.aeroflex.com. Fusibili Notare che un fusibile è posto sul filo caldo del cavo di alimentazione. Qualora l’alimentazione avvenga tramite due poli non polarizzati, è possibile che il fusibile vada a protezione del neutro per cui anche in caso di una sua rottura, l’apparato potrebbe restare sotto tensione.
Page 17 PRECAUTIONS 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.
Page 18 PRECAUTIONS 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 Naturaleza del peligro Vea el manual de funcionamiento cuando este símbolo...
Page 19 PRECAUTIONS Deje todas las tareas relativas a reparación a un servicio técnico cualificado. Vea la lista de Centros de Servicios Internacionales en www.aeroflex.com. Fusibles Se hace notar que el fusible de alimentación interno está enserie con el activo del cable de alimentación a red.
Page 20 él. 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 21 GENERAL INFORMATION Chapter 1 GENERAL INFORMATION Contents Introduction ..........................1-2 Main features ..........................1-2 Operation..........................1-2 Display ..........................1-2 Frequency selection......................1-2 Output........................... 1-2 Calibration ..........................1-3 Modulation ........................... 1-3 Incrementing......................... 1-3 Frequency sweep ........................1-3 SINAD measurement (Option 12) ....................1-4 Memory ..........................
Page 22: Introduction
2023A, 2023B and 2025 are portable and lightweight synthesized signal generators covering the frequency range 9 kHz to 1.2 GHz (2023A), 9 kHz to 2.05 GHz (2023B), and 9 kHz to 2.51 GHz (2025). A dot matrix display with a comprehensive set of utility menus allows flexibility of operation and ease of use.
Page 23: Calibration
GENERAL INFORMATION Calibration This instrument has a recommended two year calibration interval after which it should be returned for recalibration (find a list of regional offices at www.aeroflex.com). Modulation Comprehensive amplitude, frequency and phase modulations are available. Pulse modulation can be applied to the carrier from an external pulse source or (if Option 9 is fitted) from an internal pulse generator.
Page 24: Sinad Measurement (Option 12)
GENERAL INFORMATION Memory sequencing A software facility allows sequences of stored instrument settings to be defined. The incrementing facilities can then be used to cycle through the settings in manually operated test systems or be operated via an external trigger. Memory protection To prevent accidental change of the contents of the stored settings, individual memories or ranges of memories can be write-protected.
Page 25: Performance Data
GENERAL INFORMATION Performance data Carrier frequency Range: 9 kHz to 1.2 GHz (2023A). 9 kHz to 2.05 GHz (2023B). 9 kHz to 2.51 GHz (2025). Resolution: 1 Hz. Accuracy: Equal to the frequency standard accuracy. ° Phase incrementing: The carrier phase can be advanced or retarded in steps as low as 0.09 using the rotary control.
Page 26 GENERAL INFORMATION Modulation Internal and external modulation can be simultaneously enabled to allow combined amplitude and frequency (or phase) modulation. The pulse modulation can be used in combination with the other forms of modulation from an external pulse source. Frequency modulation Resolution: 1 Hz.
Page 27 GENERAL INFORMATION Pulse modulation (optional fast pulse modulators are available — see Option 7 or 11.) Carrier frequency range: 32 MHz to 2.51 GHz, usable to 10 MHz. RF output range: Maximum guaranteed output is reduced to +8 dBm (+20 dBm or +14 dBm with high power option) when pulse modulation is selected.
Page 28: Installation
GENERAL INFORMATION Remote control GPIB: All functions except the supply switch are remotely programmable. Capabilities: Designed in accordance with IEEE 482.2. Complies with the following subsets as defined in IEEE Std 488.1: SH1, AH1, T6, TE0, L4, LE0, SR1, RL1, PP0, DC1, DT1, C0, E2. RS-232: All functions except the supply switch are remotely programmable.
Page 29 GENERAL INFORMATION Option 3: High power If fast pulse modulation is needed see Option 11. Specification as standard instrument with the following exceptions: −140 dBm to +25 dBm (output power above +19 dBm is uncalibrated for carrier RF output range: frequencies above 1.2 GHz and above +14 dBm above 2.4 GHz).
Page 30 GENERAL INFORMATION Option 11: Annex Option 12: SINAD measurement Provides an independent high performance SINAD measurement function. Measurement range: 50 dB. Accuracy: ±0.5 dB. Display Resolution: 0.01 dB. Averaging: User selectable result averaging from 1 to 127 measurements — default setting is 5 measurements.
Page 31: Versions, Options And Accessories
GENERAL INFORMATION Versions, options and accessories When ordering please quote the full ordering number information. Ordering numbers Versions 2023A 9 kHz to 1.2 GHz Signal Generator. 2023B 9 kHz to 2.05 GHz Signal Generator. 2025 9 kHz to 2.51 GHz Signal Generator.
Page 32: Ec Declaration Of Conformity
GENERAL INFORMATION EC Declaration of Conformity Certificate Ref. No.: DC221 The undersigned, representing: Manufacturer: Aeroflex International Ltd. Address: Longacres House, Six Hills Way, Stevenage, Hertfordshire, UK SG1 2AN Herewith declares that the product: Equipment Description: AM/FM Signal Generator Model No.
Page 33 Chapter 2 INSTALLATION Contents Initial visual inspection........................ 2-2 Installation requirements ......................2-2 Mounting arrangements......................2-2 Ventilation ..........................2-2 Power cords ..........................2-2 Goods-in checks .......................... 2-4 Instrument operating position...................... 2-4 AC operation ..........................2-5 Connecting to supply......................2-5 Disconnecting device ......................2-5 AC fuse..........................
Page 34: Initial Visual Inspection
In the event that a molded plug has to be removed from a lead, it must be disposed of immediately. A plug with bare flexible cords is hazardous if engaged in a live socket outlet. Power cords with the following terminations are available from Aeroflex. Please check with your regional office for availability.
Page 35 INSTALLATION British Country IEC 320 plug type Part number United Kingdom Straight through 23422/001 United Kingdom Right angled 23422/002 EARTH The UK lead is fitted with an ASTA approved molded plug to BS 1363. NEUTRAL A replaceable 13 A fuse to BS 1362 is contained within the plug. This LIVE fuse is only designed to protect the lead assembly.
Page 36: Goods-In Checks
INSTALLATION Deutsch Das kontinentaleuropäische Netzkabel ist mit einem rechtwinkeligen Stecker nach IEC83 C4 (CEE7/7) Standard versehen, welcher sowohl in Steckdosen mit Erde-Stift (Standard C 3b) oder seitlichen Erdeklemmen, im allgemeinen “Schukosteckdose” genannt, paßt. Üblicherweise ist der Schukostecker bei Verwendung in Schukosteckdosen nicht gepolt. Dieses Netzkabel besitzt Zulassung für Österreich, Belgien, Finnland, Frankreich, Deutschland, Holland, Italien, Norwegen und Schweden.
Page 37: Ac Operation
INSTALLATION AC operation Connecting to supply The instrument is a Safety Class 1 product and therefore must be earthed. Use the supplied power cord or an appropriate replacement. Make sure that the instrument is plugged into an outlet socket with a protective earth contact. Ensure that the AC supply is correctly connected to the POWER SUPPLY socket.
Page 38: General Purpose Interface Bus (Gpib)
INSTALLATION General purpose interface bus (GPIB) The GPIB interface built into the instrument enables the signal generator to be remotely controlled to form part of an automatic measuring system, as well as being used to dump memory (cloning) from one instrument to another. GPIB cable connection Connection to other equipment that has a 24-way connector to IEEE Standard 488 is made using the rear-panel IEEE 488-2 socket.
Page 39: Ieee To Iec Conversion
INSTALLATION IEEE to IEC conversion An optional IEEE to IEC adapter is also available (see ‘Accessories’ at the end of Chapter 1) for interfacing with systems using a 25-way bus connector to IEC Recommendation 625. The method of use is shown in Fig. 2-3. IEEE LEAD INSTRUMENT EQUIPMENT...
Page 40: Rs-232 Interface
Request to send Clear to send Ring indicator The RS-232 interface can be connected to a personal computer’s AT connector using a null-modem cable. A suitable cable is available from Aeroflex − see ‘Versions and Accessories’ at end of Chap. 1.
Page 41: Routine Maintenance
INSTALLATION Routine maintenance Safety testing and inspection In the UK the ‘Electricity at Work Regulations’ (1989) section 4(2) places a requirement on the users of equipment to maintain it in a safe condition. The explanatory notes call for regular inspections and tests together with a need to keep records. The following electrical tests and inspection information is provided for guidance purposes and involves the use of voltages and currents that can cause injury.
Page 42: Cleaning
The above information is provided for guidance only. Aeroflex designs and constructs its products in accordance with International Safety Standards such that in normal use they represent no hazard to the operator. Aeroflex reserves the right to amend the above information in the course of its continuing commitment to product safety.
Page 43: Software Driver And Soft Front Panel
INSTALLATION Software driver and soft front panel A LabWindows/CVI instrument driver and VXI Plug and Play soft panel for the 2023A, 2023B and 2025 signal generators can be downloaded from http://www.aeroflex.com/. The soft front panel is used to verify instrument communications and functionality when the instrument is first integrated into a system.
Page 44: Principles Of Operation
Chapter 3 PRINCIPLES OF OPERATION Contents Introduction ..........................3-2 Main screen operation ......................... 3-2 Utility menu operation......................... 3-2 Menu grouping ........................3-3 Family tree..........................3-3 Memory operation ........................3-3 List of figures Fig. 3-1 Utility menu operation summary showing a modulation selection example ....3-5 Fig.
Page 45 PRINCIPLES OF OPERATION Introduction This chapter is specifically for use by the experienced signal generator user and therefore the operation of the instrument is not explained in detail. Since the instrument has been designed to be easy to use, the experienced user may need to refer to this chapter only, to use the instrument efficiently.
Page 46 PRINCIPLES OF OPERATION Menu grouping To save you having to memorize specific utility numbers, the utilities are split into the 11 groups listed below: Utility number Utility group 01-09 FREQUENCY/SWEEP RF LEVEL 10−19 MODULATION (Normal and FSK) 20−29 MODULATION SOURCE 30−39 MEMORY 40−48...
Page 48 PRINCIPLES OF OPERATION Fig. 3-1 Utility menu operation summary showing a modulation selection example...
Page 49 PRINCIPLES OF OPERATION UG01 B2033 FREQUENCY/SWEEP RF LEVEL MODULATION MODULATION SOURCE MEMORY UMFS01 B2034 UMRF01 B2035 UMMOD01 B2036 B6058 UMMEM01 B2039 B6312 UT010 B2054 UT020A B2057 UT030b B2820 UT040 B2066 UTIL02 B2830 UT011 B2055 UT020B B2058 UTO31 B2065 UT041 B2067 B6308 B6311 UT012...
Page 50 PRINCIPLES OF OPERATION SETUP INFORMATION DIAGNOSTICS LOCK/UNLOCK CALIBRATION UMSET01 B2040 UMINF01 B2041 UMDIA01 B2042 UMLOC01 B2044 UMCAL01 B6318 UMCAL02 B6319 UMCAL04 B6321 UMCAL03 B6320 UT050 B2074 UT060 B6315 UT070 B2083 UT080 B2096 UT100 B2099 UT107 B2106 UT115 B2113 UT051 B2075 UT061 B6316 UT072...
Page 51 PRINCIPLES OF OPERATION Utility menu family tree...
Page 52: Local Operation
Chapter 4 LOCAL OPERATION Contents Introduction ..........................4-4 Front-panel controls and connectors.................... 4-4 Connectors..........................4-4 Keyboard ..........................4-5 Rear-panel connectors ......................... 4-7 FIRST-TIME USE........................4-9 Switching on..........................4-9 Display............................4-10 Selecting functions and keyboard entry..................4-12 Carrier frequency........................ 4-12 RF level ..........................4-12 Modulation .........................
Page 53 Fig. 4-2 Instrument front panel showing keyboard ..............4-5 Fig. 4-3 Instrument rear panel showing connectors..............4-7 Fig. 4-4 2023A main screen in normal operation showing default display ........ 4-9 Fig. 4-5 2023B main screen in normal operation showing default display ........ 4-9 Fig.
Page 54 LOCAL OPERATION Fig. 4-22 Modulation source menu − shown with an external source selected ......4-25 Fig. 4-23 Modulation source phase menu ................4-26 Fig. 4-24 Pulse modulation menu (standard)................4-28 Fig. 4-25 External pulse modulation ..................4-28 Fig. 4-26 Modulation mode (special) menu ................4-29 Fig.
Page 55: Introduction
LOCAL OPERATION Introduction All operations of the signal generator are carried out from the front-panel keyboard which is color-coded. An extensive suite of utility menus make this a very versatile instrument. The built-in GPIB and RS-232 interfaces enable the instrument to be remotely operated. Front-panel controls and connectors Parameters are selected by means of keys which have their functions printed on them, a numerical key pad and a rotary control knob.
Page 56: Keyboard
CONTROLS AND CONNECTORS Keyboard The keyboard is functionally color-coded. The keys for the primary functions of carrier frequency, level and modulation are dark gray. Secondary functions such as unit selection and on/off keys are medium gray. Menu selection, which plays such a prominent part in this instrument, has keys which are colored blue.
Page 57 CONTROLS AND CONNECTORS After using the [ ÷10] or [ ×10] keys or the control knob (17) [RETN] returns the setting of the function to the last keyed-in value. (18) [KNOB/STEP] Switches between enabling the control knob and enabling the step operation.
Page 58: Rear-Panel Connectors
CONTROLS AND CONNECTORS Rear-panel connectors The rear-panel connectors are shown in Fig. 4-3 below. 27 28 POWER SUPPLY PULSE I/P TRIGGER EXT MOD FREQ STD IEEE 488.2 100-120V 50-400Hz 4FSK 2FSK INPUT OUTPUT IN-OUT RS232 210-240V 50-60Hz 200VA MAX FUSE RATING T2AL250V SUPPLY FUSE T10AH250V...
Page 60: First-Time Use
The RESET annunciator is shown and the factory settings are now recalled from memory location 999 and displayed on the screen. Fig. 4-4 2023A main screen in normal operation showing default display Fig. 4-5 2023B main screen in normal operation showing default display...
Page 61: Display
FIRST-TIME USE Fig. 4-6 2025 main screen in normal operation showing default display Display Before entering any parameters it is useful to look at the effect that pressing various keys has on the display. The display is divided into a number of fields as shown in Fig. 4-7. Carrier frequency field When you press [CARR FREQ] it causes Carr Freq to be highlighted and your data entry is recognized as a frequency setting.
Page 62 FIRST-TIME USE Modulation summary field In this field are shown your other selected modulation sources. All your settings − types of modulation, waveforms, current ON or OFF states, as well as modulation enabled or disabled − are shown. Carrier frequency Memory Error message RF level...
Page 63: Selecting Functions And Keyboard Entry
FIRST-TIME USE Selecting functions and keyboard entry Whenever one of the main functions − carrier frequency, RF level, modulation, modulation source − is highlighted on the main screen, any terminated numerical entry is accepted as being a changed parameter for that function. This enables you to enter, for example, a sequence of carrier frequencies without having to re-press the [CARR FREQ] function key for each entry.
Page 64: Using The [ ÷10] And [ ×10] Keys
FIRST-TIME USE Using the [ ÷10] and [ ×10] keys When you have entered a parameter value using the numerical key pad, you can adjust its value either in single steps or continuous steps. As an example of its use we shall adjust the carrier frequency using the knob for continuous adjustment as well as in selected increments/decrements using single steps.
Page 65: With Steps
FIRST-TIME USE With steps Press [KNOB/STEP] to disable the control knob (as indicated by the bracket no longer being displayed). Press [SET Δ]. The screen changes to display the default step settings for frequency, level and modulation as shown in Fig. 4-8. (10) Press [CARR FREQ].
Page 66: Using The Utility Menus
FIRST-TIME USE Using the utility menus As an exercise in the use of the utility menus we shall perform the operation of selecting an alternative frequency standard. Press [CARR FREQ] followed by [MENU] to display the Utility Group Menu shown in Fig.
Page 67: Menu Conventions
FIRST-TIME USE Step through the selections using the [NEXT] and [PREVIOUS] keys or by direct entry on the key pad. Each time, the highlighted selection becomes the current selection (no terminator is required). Since no external standard is connected, the message Err 503: Ext standard missing is displayed every time you select an external standard.
Page 68: Detailed Operation
DETAILED OPERATION Selecting carrier frequency Carrier frequency can be entered in the range 9 kHz to 1.2 GHz (2023A), 9 kHz to 2.05 GHz (2023B) or 9 kHz to 2.51 GHz (2025) to a resolution of 1 Hz. Press [CARR FREQ] to select carrier frequency as the current function. Carr Freq: is highlighted on the screen.
Page 69: Sweep Mode
DETAILED OPERATION Sweep mode The following menu allows you to set the carrier sweep mode to either single shot or continuous sweep, to logarithmic or linear sweep and to select the mode of external triggering. For external operation, connect a TTL trigger signal to the rear-panel TRIGGER connector. Ensure however, that this socket is not disabled by a higher priority mode having been selected.
Page 70: Sweep Control
DETAILED OPERATION Sweep control Control of the sweep: start, stop, reset and continue is performed as follows: Select the Util 3: Carrier Sweep Control menu. Initially this shows Start Sweep and the start Carr Freq: value together with the currently selected Freq Mode: (see Fig. 4-14). B6311 Fig.
Page 71: Carrier Phase Adjustment
DETAILED OPERATION Carrier phase adjustment The phase offset of the carrier can be adjusted in degrees as follows: Select the Util 5: Carrier Phase Adjust menu. This shows the currently selected phase shift setting (see Fig. 4-15). UT005 B2053 Fig. 4-15 Carrier phase adjust menu Select the required control knob sensitivity between Fine (0.09°), Medium (0.9°) and Coarse (2.7°).
Page 72: Selecting Rf Level
DETAILED OPERATION Selecting RF level RF level can be entered in the range −140 to +13 dBm (or to +25 dBm for the High Power Option). Select the RF level from the main screen by pressing [RF LEVEL]. RF Levl: is highlighted on the screen.
Page 73: Rf Level Linear Units
DETAILED OPERATION RF level linear units You can set the RF level in linear units of volts PD or volts EMF as follows: Select the Util 10: RF Level Linear Unit menu. This shows the currently selected linear unit (see Fig. 4-17). UT010 B2054 Fig.
Page 74: Modulation Modes
DETAILED OPERATION Modulation modes The EXT MOD INPUT socket allows an external modulation signal to be summed with the signals from the internal oscillator. This allows up to three modulations to be available: for example, external FM with a combined internal AM1 and AM2. Modulation source can be internal or external.
Page 75: Source Selection − Internal
DETAILED OPERATION Source selection − internal Having previously selected internal modulation from the Util 20: Modulation Mode menu, select the waveform and modulating frequency as follows: Press [MOD SOURCE] to highlight the current modulation source selection. Repeatedly press [MOD SOURCE] to cycle through and select a sine, square or triangular waveform.
Page 76: Source Selection − External
DETAILED OPERATION Source selection − external AC or DC coupling or automatic leveling control (ALC) can be used in conjunction with an external source. Having previously selected external modulation from the Util 20 Modulation Mode menu continue as follows: Press [MOD SOURCE] for modulation source selection. Repeatedly press [MOD SOURCE] to cycle through the selections Ext DC, Ext AC and Ext ALC.
Page 77: Modulation Enable/Disable
DETAILED OPERATION Modulation enable/disable [SOURCE ON/OFF] switches the current modulation channel on or off. To switch all modulation on or off press [MOD ON/OFF]; this function is mainly used when more than one modulation source is enabled. Switching all modulation off causes Mod Disable to appear on the main screen. Modulation source phase adjustment The phase difference of the modulation oscillator channel 2 relative to channel 1 can be adjusted in degrees as follows:...
Page 78: Modulation Selection
DETAILED OPERATION Modulation selection The carrier can be frequency, amplitude or phase modulated from an internal or external source. Additionally, pulse modulation is available from an external source or (if Option 9 is fitted) from an internal pulse generator. The internal modulation oscillator is capable of generating two tones simultaneously in one modulation channel and has a frequency range of 0.01 Hz to 100 kHz.
Page 79: Pulse Modulation Selection (With/Without Option 9)
DETAILED OPERATION Pulse modulation selection (with/without Option 9) Pulse modulation may be selected in addition to any other normal modulation modes. The instrument uses an external source to pulse the waveform or (Option 9 only) can generate pulses internally, either free-running or externally triggered. The external source is applied to the front- panel PULSE INPUT socket.
Page 80: Fsk Selection
DETAILED OPERATION FSK selection The instrument accepts one or two logic level inputs to produce an FSK modulated output signal. The input data is sampled at 156 kHz and produces a 2 or 4 level shift waveform which is filtered by a 20 kHz Bessel filter and applied to the carrier.
Page 81: Pulse Modulation (Option 9 Fitted)
DETAILED OPERATION Pulse modulation (Option 9 fitted) Select the Util 22: Pulse Modulation menu. This shows the currently selected modulation mode against Mod Mode: (see Fig. 4-27). B6057 Fig. 4-27 Pulse modulation menu (Option 9) Highlight Pulse Mod: and enter 2 on the keypad (no terminator is required) to enable internal modulation.
Page 82 DETAILED OPERATION Pulse Delay TRIGGER PULSE OUTPUT Pulse Width C6071 Fig. 4-29 Internal pulse modulation, triggered Press [MOD] to return to the main screen with Pulse displayed together with its ON state. 4-31...
Page 83: Function Generator
DETAILED OPERATION Function generator The instrument contains a function generator capable of sourcing sine, square and triangle waveforms. When the function generator is enabled its output appears on the LF OUTPUT or MOD I/O connector, and internal modulation (page 4-26) is disabled. Select the Util 32: Function Generator menu.
Page 84: Default Settings
DETAILED OPERATION Default settings The instrument is reset to the factory default settings in the following cases: • At power-up. • Following execution of the RCL 999 command. Following execution of the * RST command. • The default settings are shown in Table 4-1. Table 4-1 Instrument default settings Carrier frequency (Maximum available) 1.2 GHz/2.05 GHz/2.51 GHz...
Page 86: Memory
MEMORY Memory stores There are three types of store: 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 store The non-volatile carrier frequency store has 100 locations numbered 0 to 99 for the storage of carrier frequency only.
Page 87: Memory Recall
MEMORY 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 88: Memory Sequencing
MEMORY Memory sequencing You can step the memory up in a sequence from a start location using a TTL input connected to the rear-panel TRIGGER socket. Note that the triggering order of priority is as follows: FSK logic input Memory recall Sweep trigger.
Page 89: Memory Write Protection
MEMORY Memory write protection To use the memory protection utility first ensure that the instrument is unlocked to Level 1 using Util 80: Protection Lock/Unlock. Then you can either write protect a block of stores (or a single store) to prevent accidental overwriting or unprotect it as follows: Select Util 41: Memory Write Protect to display the menu shown in Fig.
Page 90: Memory Cloning
MEMORY Memory cloning You can transfer the stored settings from one signal generator to another by using either the GPIB or the RS-232 interface. These stored settings are the full and carrier stores together with their currently protected states. This means that after cloning has been performed all of the non-protected memory stores on the receiving instrument have been overwritten.
Page 92: General
GENERAL Frequency standard selection This utility enables you to select a 10 MHz output to provide a standard for use with associated equipment. It also enables you to select a standard (either external or internal) for use by the instrument. When an external standard is selected, the internal TCXO is locked to the external standard using a phase locked loop.
Page 93: 50 Ω/75 Ω Impedance Selection
GENERAL 50 Ω/75 Ω impedance selection The performance specification of the instrument assumes operation into 50 Ω loads. By means of this menu in association with a 75 Ω adapter, you can select operation into 75 Ω loads whilst maintaining correct voltage calibration. It also enables the reverse power protection circuit to function correctly.
Page 94: Rf Level Limit
GENERAL RF level limit To use the RF level limit utility first ensure that the instrument is unlocked to Level 1 using Util 80: Protection Lock/Unlock. This utility enables you to set your own maximum output power limit which allows you to protect sensitive devices connected to the RF OUTPUT socket. Proceed as follows: Select the Util 13: RF Level Limit menu.
Page 95: Rf Level Offsets
GENERAL RF level offsets To use the RF level offsets utility first ensure that the instrument is unlocked to Level 1 using Util 80: Protection Lock/Unlock. This utility enables you to offset the RF output level to compensate for cable or switching losses, or to standardize a group of instruments so that they give identical measurements.
Page 96: Dcfm Nulling
GENERAL DCFM nulling For a DC-coupled external FM signal, small frequency offsets can be reduced by using the DCFM nulling facility. Operation is as follows: First of all select external FM from Util 20: Modulation Mode (Normal). Then select DC coupling from Util 30: Modulation Source.
Page 97: Sinad Measurement (Option 12)
GENERAL SINAD measurement (Option 12) When this option is fitted you may make measurements of the SINAD ratio on an audio frequency signal applied to the EXT MOD INPUT socket. Ensure that no external modulation mode has been selected from Util 20, since external modulation has priority over SINAD. You can make the measurement in a flat bandwidth of 7 kHz or have it weighted according to the C-MESS or CCITT standards.
Page 98 GENERAL B6310 Fig. 4-42 SINAD measurement menu Select the number of samples to be averaged by highlighting Average and entering a number on the key pad in the range 1 to 127. Note that although selecting a higher number gives a more accurate measurement result, it also increases the measurement time. Select the weighted filter between 1 for CCITT and 2 for C-MESS.
Page 99 GENERAL SINAD set-up incorrect (Error 206) is displayed if the first SINAD reading is lower than the target. The indicated RF level is unlikely to be correct. Probable causes are: Initial RF level set is too low. Radio is disconnected, incorrectly set up or malfunctioning. Signal generator [CARR ON/OFF] is OFF.
Page 100: Keyboard Locking And Display Blanking
GENERAL Keyboard locking and display blanking You may lock the keyboard to prevent unauthorized use of the instrument. Additionally you may blank the display to prevent sensitive data from being displayed. Selection is made as follows: Unlock the protection by selecting Util 80: Protection Lock/Unlock and entering the 4-digit password for Level 1 using the keypad and pressing [ENTER].
Page 101: Power-Up Options
GENERAL Power-up options The instrument can power-up in one of two states: with the factory settings or with the settings of your choice stored in one of the full memory locations. Selection is made as follows: Select the Util 54: Power Up Settings menu. This shows the currently selected power-up choice (see Fig.
Page 102: Software Information
GENERAL Software information You can obtain a description of the instrument’s software by selecting Util 60: Software Status. This causes the software version and date as well as the programmed EPROM part number to be displayed (see Fig. 4-47). UT060 B6315 Fig.
Page 103: Instrument Options
GENERAL Instrument options You can obtain a list of the options fitted in the instrument by selecting Util 62: Instrument Options (see Fig. 4-49). For available options refer to ‘Options’ at the end of Chapter 1. UT062 B6317 Fig. 4-49 Instrument options display Note that if no attenuator is fitted, reverse-power protection is not provided.
Page 104: Changing The Password
Keep a copy of your passwords in a safe place and remember to update the copy whenever the passwords are changed. In the event that you have forgotten your password(s) get in touch with your local regional office (www.aeroflex.com). Calibration Instrument calibration procedures (Utils 100 onwards) require that the instrument is unlocked to Level 2, and are explained in the Maintenance Manual.
Page 106: Error Messages
ERROR MESSAGES Error handling Error messages are divided into four groups: − represent a condition of the instrument. Background errors − generally caused by the user. Foreground errors − generated by incorrect programming. GPIB errors − caused by failure associated with the main RAM or the Fatal errors PROM.
Page 107: Gpib Errors
ERROR MESSAGES GPIB errors When an error occurs the error number is put into the error queue and the error message is displayed. Clearing the error message from the screen does not clear the error queue, which is only cleared by the GPIB command ERROR? query, which returns the error at the head of the queue, or by the *CLS command which clears the whole error queue.
Page 108: Table 4-3 Foreground Errors (0−399)
ERROR MESSAGES Table 4-3 Foreground errors (0−399) No error EEPROM checksum Pad cal checksum RF cal checksum Freq std checksum Synthesizer cal checksum Mod ref checksum Mod offset checksum Mod amp checksum ALC cal checksum FM cal factor checksum FM tracking checksum ΦM cal factor checksum System cal checksum AM cal checksum...
Page 109: Table 4-4 Gpib Errors (400−499)
ERROR MESSAGES Table 4-4 GPIB errors (400−499) Syntax error Unrecognized mnemonic Numeric syntax Data expected Illegal data Too much data Incorrect data type Unrecognized character data Character data not unique Block definition Block size Missing quote Terminator expected Invalid unit Unit not expected No header match found Header not unique...
Page 110 Chapter 5 REMOTE OPERATION Contents Preparing the instrument for remote operation ................5-3 Preparing the instrument for remote operation ................5-3 Introduction .......................... 5-3 Plug and Play driver ......................5-3 Local lockout........................5-3 Remote/local operation......................5-3 Remote operation selection ......................5-3 RS-232 operation.........................
Page 111 REMOTE OPERATION Standard event registers......................5-39 Hardware event registers ......................5-40 Coupling event registers ......................5-41 Instrument event registers......................5-42 Queue flag details ........................5-43 Status byte when read by *STB?....................5-44 Status byte when read by serial poll ..................5-45 Summary of status reporting commands and queries ..............
Page 112: Preparing The Instrument For Remote Operation
REMOTE OPERATION Preparing the instrument for remote operation Introduction The instrument can be controlled remotely using either the RS-232 interface or the GPIB (General Purpose Interface Bus) interface. The command set used is designed to comply with IEEE 488.2. In RS-232 mode some IEEE 488.2 features are not implemented due to the restrictions of the interface.
Page 113: Rs-232 Operation
REMOTE OPERATION RS-232 operation RS-232 control port The connections required between the RS-232 serial port and the controlling device are described in Chapter 2 under ‘RS-232 interface’. Handshaking Software only Flow control is achieved by XON/XOFF. All control lines are normally in the OFF state and are ignored. Hardware only Flow control is achieved by DSR or CTS to suspend transmission from the instrument and using DTR to suspend transmission from the controller.
Page 114: Setting Rs-232 Parameters
REMOTE OPERATION Setting RS-232 parameters The RS-232 settings can be changed as follows: First of all ensure that RS233 Setup has been selected from the Util 50: Remote Operation Select menu. Select the Util 52: RS232 Setup menu. This shows the current RS-232 settings (see Fig.
Page 115: Gpib Operation
REMOTE OPERATION GPIB operation The instrument can be operated remotely from a personal computer fitted with a GPIB interface card or a dedicated GPIB controller. All functions can be controlled by coded messages sent over the interface bus via the 24-way socket on the rear panel of the instrument. IEEE Standard 488.2 (1987) is implemented, which defines the protocols and syntax of commands.
Page 116: Device Listening Elements
REMOTE OPERATION Device listening elements The following is a list of the device listening elements (as defined in the IEEE 488.2 standard) which are used in the instrument: <PROGRAM MESSAGE> <PROGRAM MESSAGE TERMINATOR> <PROGRAM MESSAGE UNIT> <PROGRAM MESSAGE UNIT SEPARATOR> <COMMAND MESSAGE UNIT>...
Page 117: Programming
REMOTE OPERATION 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 118: Program Data
<manufacturer>,<model>,<serial number>,<software part number and issue number><EOM>. where: <manufacturer> is IFR, <model> is the instrument model number, which is one of 2023A, 2023B or 2025. <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 119: Device-Dependent Commands
REMOTE OPERATION Because an Arbitrary ASCII Response ends with the Response Message Terminator (<EOM>) either *IDN? or *OPT? must be the last Query Message Unit in a Program Message. *RST Reset Command. Sets the instrument functions to the factory default power up state.
Page 120: Default Settings
REMOTE OPERATION Default settings These are the settings assigned to instrument functions in the following cases: Power-up to factory default settings. (ii) Execution of *RST command. (iii) Recall Store 999. 5-11...
Page 121: Carrier Frequency
REMOTE OPERATION Carrier frequency CFRQ Set Carrier Frequency (short form) Set Carrier Frequency :VALUE Set Carrier Frequency step size :INC Data type : Decimal Numeric Program Data Allowed suffices : Any one of: GHZ, MHZ, KHZ or HZ Default suffix : Go UP one step Go DOWN one step Return to original setting...
Page 122: Rf Level
REMOTE OPERATION RF level RFLV Set RF Output Level (short form) Set RF Output Level :VALUE Data type : Decimal Numeric Program Data Allowed suffices : Any one of: DBM, DBV, DBMV, DBUV, V, MV or UV Default suffix : DBM unless changed by UNITS command Set RF Level step (dB) :INC...
Page 123 REMOTE OPERATION Prepares message containing information on RF Level setting in the following RFLV? format: :RFLV:UNITS <unit>;TYPE <type>;VALUE <nr2>;INC <nr2>;<status> where: <unit> is character program data defining the default RF level units (DBM, DBV, DBMV, DBUV, V, MV or UV), <type> is character program data indicating EMF or PD and <status>...
Page 124: Output Control
REMOTE OPERATION Output control These commands allow you to download and store settings without the output changing. OUTPUT [not used alone] Allows user to download and store settings in the normal way without the :DISABLE output of the instrument changing until the OUTPUT:ENABLE command is received.
Page 125: Modulation Mode
REMOTE OPERATION Modulation mode MODE Set modulation mode Data type : Character Program Data (valid combinations of AM, FM, PM, FSK2L, FSK4L or PULSE. See table below.) Allowed suffices : None Default suffix : None Examples: MODE AM,FM MODE FM,PULSE VALID MODE COMBINATIONS TABLE AM [,PULSE] FM [,PULSE]...
Page 126: Frequency Modulation (And Fsk)
REMOTE OPERATION Frequency modulation (and FSK) FM or FM1 or FM2 Set FM Deviation (short form) :DEVN Set FM Deviation :INC Set FM step size Data type : Decimal Numeric Program Data Allowed suffices : Any one of: GHZ, MHZ, KHZ or HZ Default suffix : :<src>...
Page 127 REMOTE OPERATION Perform DC FM null operation DCFMNL Data type : None Allowed suffices : None Default suffix : None Example: DCFMNL FM? or FM1? or FM2? Prepares message containing information on FM setting in one of the following formats: :FM:DEVN <nr2>;<src>;<status>;INC <nr2>...
Page 128: Phase Modulation
REMOTE OPERATION Phase modulation PM or PM1 or PM2 Set Phase Modulation Deviation (short form) Set Phase Modulation Deviation :DEVN :INC Set Phase Modulation step size Data type : Decimal Numeric Program Data Allowed suffices : Default suffix : Select modulation source where <src> is any one of: INT, EXTAC, EXTALC, :<src>...
Page 129 REMOTE OPERATION PM:MODF? or PM1:MODF? Prepares message containing information on PM modulation oscillator setting or PM2:MODF? in one of the following formats: :PM:MODF:VALUE <nr2>;<shape>;INC <nr2> :PM1:MODF:VALUE <nr2>;<shape>;INC <nr2> :PM2:MODF:VALUE <nr2>;<shape>;INC <nr2> where: <shape> is a program mnemonic representing the waveform shape Example: :PM2:MODF:VALUE 2500.00;TRI;INC 500.00...
Page 130: Amplitude Modulation
REMOTE OPERATION Amplitude modulation AM or AM1 or AM2 Set AM Depth (short form) Set AM Depth :DEPTH Set AM step size :INC Data type : Decimal Numeric Program Data Allowed suffices : Default suffix : Select modulation source where <src> is any one of: INT, EXTAC, EXTALC, :<src>...
Page 131 REMOTE OPERATION AM:MODF? or AM1:MODF? Prepares message containing information on AM modulation oscillator setting or AM2:MODF? in one of the following formats: :AM:MODF:VALUE <nr2>;<shape>;INC <nr2> :AM1:MODF:VALUE <nr2>;<shape>;INC <nr2> :AM2:MODF:VALUE <nr2>;<shape>;INC <nr2> where: <shape> is a program mnemonic representing the waveform shape Example: :AM:MODF:VALUE 5000.00;TRI;INC 1000.00...
Page 132: Pulse Modulation
REMOTE OPERATION Pulse modulation Not used alone. PULSE Turn Pulse modulation ON Turn Pulse modulation OFF :OFF Select external pulse modulation :EXT Select internal pulse modulation (Option 9 only) :INT Set internal pulse modulation frequency (short form) (Option 9 only) :MODF :VALUE Set internal pulse modulation frequency (Option 9 only)
Page 133: Pulse Generation
REMOTE OPERATION Pulse generation PGEN Not used alone. Select pulse modulation source :SOURCE Data type: Character Program Data (INTERNAL or EXTERNAL) Allowed suffices: None Default suffix: None Examples: :PGEN:SOURCE INTERNAL :PGEN:SOURCE EXTERNAL Select pulse state :STATE Data type: Character Program Data (OFF/ON) Allowed suffices: None Default suffix:...
Page 134: Lf Generator
REMOTE OPERATION LF generator Not used alone Enables the LF generator :OFF Disables the LF generator Data type: None Allowed suffices: None Default suffix: None Prepares message containing information on LF Generator state in the following format: :LF <status> where: <status> is a program mnemonic indicating whether the state is OFF or ON.
Page 135: Memory − Store
REMOTE OPERATION Memory − store Store 0−299 (short form) :MEM Store 0−299 :CFRQ Carrier Freq Store 0−99 :FULL Full Store 100−199 :RAM RAM Store 200−299 Data type : Decimal Numeric Program Data Allowed suffices : None Default suffix : None Examples: STO:FULL 112 STO:CFRQ 83...
Page 136: Memory − Sequencing
REMOTE OPERATION Memory − sequencing MSEQ [not used alone] :MODE Select sequencing mode of operation. When a sequence is selected, the user can step through the sequence using the RCL:UP and RCL:DN commands. The sequence modes are SEQ1 to SEQ9, and the sequencing can be disabled with the OFF parameter.
Page 137: Memory − Triggering
REMOTE OPERATION Memory − triggering MTRIG Enables memory recall triggering to be activated by *TRG command or by external triggering. The triggering order of priority is as follows: FSK logic input Memory recall Sweep trigger Therefore ensure that FSK is not enabled, otherwise selecting memory recall triggering has no effect.
Page 138: Sweep Operation
REMOTE OPERATION Sweep operation To make these commands operational they must first be enabled by the CFRQ:MODE SWEPT command. SWEEP [not used alone] :CFRQ Optional command (may be omitted) :START Set Start Frequency :STOP Set Stop Frequency :INC Set Carrier Frequency sweep step size Data type : Decimal Numeric Program Data Allowed suffices :...
Page 139: Sweep Mode
REMOTE OPERATION Sweep mode To make these commands operational they must first be enabled by the CFRQ:MODE SWEPT command. Note that for triggering the order of priority is as follows: FSK logic input Memory recall Sweep trigger Therefore ensure that FSK and memory recall are not enabled, otherwise selecting sweep triggering has no effect.
Page 140: Sweep Control
REMOTE OPERATION Sweep control SWEEP [not used alone] Commence Sweep Pause Sweep :HALT Continue Sweep :CONT Reset sweep to Start Value :RESET Return to original setting :RETN Transfer current value as the new setting :XFER Go UP one sweep step while paused Go DOWN one sweep step while paused Data type : None...
Page 141: Sinad Mode
REMOTE OPERATION SINAD mode SINAD [not used alone] :AVERAGE Set number of averages (1 to 127) Data type : Decimal Numeric Program Data Allowed suffices : None Default suffix : None Example: :SINAD:AVERAGE 10 Set no weighting filter :UNWTD Set CCITT weighting filter :CCITT Set C-MESS weighting filter :CMESS...
Page 142: Miscellaneous Commands
REMOTE OPERATION Miscellaneous commands ERROR? Prepares message relating to the next error in the error queue in the following format: <nr1>, <string> Where <string> is a descriptive error message. The numeric value returned is that of the next error number, or 0 if the queue is empty, or 399 if the queue is full Example: 100,"Carrier Limit"...
Page 143 REMOTE OPERATION BLANK Blank or unblank display parameters: Carrier Frequency, RF Level, Modulation Depth and Deviations, and Modulation Frequency Data type : None Allowed suffices : None Default suffix : None Examples: BLANK:ON BLANK:OFF BLANK? Prepares message containing information on the display blanking setting in the following format: :BLANK:<state>...
Page 144 REMOTE OPERATION KLOCK Disables keyboard entry except RPP Reset and Go to Local Data type : None Allowed suffices : None Default suffix : None KUNLOCK Enables keyboard entry Data type : None Allowed suffices : None Default suffix : None POWUP [not used alone]...
Page 145 REMOTE OPERATION Allowed suffices : None Default suffix : None Example: IMPEDANCE Z75R Prepares message containing information on which adapter mode is selected in IMPEDANCE? the following format: :IMPEDANCE <char> Example: :IMPEDANCE Z75R 5-36...
Page 146: Status Byte
REMOTE OPERATION 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).
Page 147: Status Data Structure − Register Model
REMOTE OPERATION 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. Device Status continuously monitored by Condition Register Condition Register Transition...
Page 148: Standard Event Registers
REMOTE OPERATION Standard event registers This register is defined by IEEE 488.2 and each bit has the meaning shown below: Condition Register Register <pon> <urq> <cme> <exe> <dde> <qye> <rqc> <opc> Read/Write Commands Transition Filter # <pon> <urq> <cme> <exe> <dde>...
Page 149: Hardware Event Registers
REMOTE OPERATION 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? & & &...
Page 150: Coupling Event Registers
REMOTE OPERATION 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? & & &...
Page 151: Instrument Event Registers
REMOTE OPERATION 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? & & &...
Page 152: Queue Flag Details
REMOTE OPERATION Queue flag details Input from all Error Conditions Status Byte & Enable Register non-zero From Standard Event Registers Error Queue Response Message Response ERROR? Device Dependant Errors Output Queue <mav> <hsb> <csb> <ssb> <erb> <mss> <esb> Status Byte Register Data from Output Queue C0075 The <mav>...
Page 153: Status Byte When Read By *Stb
REMOTE OPERATION Status byte when read by *STB? Status Byte Register Register Read Command <mav> <hsb> <csb> <ssb> <erb> <mss> <esb> *STB? & & & & & & & *SRE *SRE? Register Service Request Enable Register# C0073 Read/Write Commands # Bit 6 in this register ignores data sent by *SRE and always returns 0 in response to *SRE? <rqs>, <esb>...
Page 154: Status Byte When Read By Serial Poll
REMOTE OPERATION Status byte when read by serial poll Status Byte Register <mav> <hsb> <csb> <ssb> <erb> <mss> <esb> Service Request Generation *SRE *SRE? Register Service Request Enable Register# C0074 Read/Write Commands # Bit 6 in this register ignores data sent by *SRE and always returns 0 in response to *SRE? <erb>...
Page 155: Summary Of Status Reporting Commands And Queries
REMOTE OPERATION Summary of status reporting commands and queries *CLS Clears Status Registers and the Error Queue *ESE<nrf> Writes to Standard Event Enable Register *ESE? Reads from Standard Event Enable Register *ESR? Reads from Standard Event Status Register *SRE<nrf> Writes to Service Request Enable Register *SRE? Reads from Service Request Enable Register *STB?
Page 156: Technical Description
Fig. 6-1 Block schematic diagram ....................6-2 Introduction The 2023A, 2023B and 2025 Signal Generators cover the wide range of frequencies from 9 kHz to 1.2 GHz (2023A), to 2.05 GHz (2023B) and to 2.51 GHz (2025). Output levels range from −140 dBm to +13 dBm (with Option 3 fitted +25 dBm).
Page 157 BRIEF TECHNICAL DESCRIPTION Fig. 6-1 Block schematic diagram...
Page 158 Chapter 7 ACCEPTANCE TESTING Contents Introduction ..........................7-4 Test precautions........................... 7-4 Recommended test equipment..................... 7-5 TEST PROCEDURES ......................7-7 RF output............................. 7-7 RF level frequency response ....................7-8 ALC linearity........................7-8 Attenuator accuracy......................7-9 Carrier frequency accuracy......................7-11 Spectral purity ........................... 7-13 Harmonics (not Option 3 or 11) ..................
Page 159 ACCEPTANCE TESTING List of tables Table 7-1 RF output at −4 dBm (not Option 3 or 11)............... 7-40 Table 7-2 RF output at +7 dBm (not Option 3 or 11)............... 7-41 Table 7-3 RF output at +13 dBm (not Option 3 or 11)............. 7-42 Table 7-4 ALC linearity at 2.5 MHz (not Option 3 or 11) ............
Page 160 ACCEPTANCE TESTING List of figures Fig. 7-1 RF output test set-up ..................... 7-8 Fig. 7-2 RF output test set-up ..................... 7-9 Fig. 7-3 Carrier frequency accuracy test set-up................ 7-11 Fig. 7-4 Carrier harmonics and sub- and non-harmonics test set-up ........7-13 Fig.
Page 161: Introduction
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 are included for the test equipment, unless the measurement is dependent on specific instrument settings or special measurement techniques.
Page 162: Recommended Test Equipment
DC to 7.53 GHz, 3 Hz resolution bandwidth Anritsu MS2602A AM, FM and ΦM 50 kHz to 2.32 GHz, accuracy Modulation meter Aeroflex 2305 plus ±1% at 1 kHz modulation frequency. distortion option ** DC to 100 kHz sine, ±0.6 dB flatness, 100 kHz...
Page 164: Test Procedures
VSWR for output levels greater than −5 dBm <1.5:1 Test equipment Description Minimum specification Example ±0.1 dB from 9 kHz to 2.51 GHz Power meter Aeroflex 6960B and 6912 − Measuring 0 dBm to 127 dBm; 2.5 MHz to 2.55 GHz Agilent 8902A receiver...
Page 165: Rf Level Frequency Response
ACCEPTANCE TESTING (not Option 3 or 11) RF level frequency response Test procedure 6960B RF power meter RF OUTPUT SENSOR INPUT 6912 Power sensor C2360 Fig. 7-1 RF output test set-up Perform AUTO ZERO and AUTO CAL on the power meter. Connect the test equipment as shown in Fig.
Page 166: Attenuator Accuracy
ACCEPTANCE TESTING (not required for instruments with Option 1) Attenuator accuracy The following test confirms that the attenuator performs to the published performance specification. In the event of the receiver/down-converter not being available, an alternative method to functionally test the individual pads is also suggested. (See ‘Alternative attenuator functional test’.)
Page 167 ACCEPTANCE TESTING Alternative attenuator functional test (not required for instruments with Option 1) Connect the test equipment as shown in Fig. 7-1. Perform AUTO ZERO and AUTO CAL on the power meter. On the UUT set: [CARR FREQ] 10 [MHz] [RF LEVEL] 13 [dB]* *For units fitted with Option 3, high power option, select 7 [dB]...
Page 168: Carrier Frequency Accuracy
It confirms correct operation of phase locked loops and dividers. Overall accuracy is determined by the instrument’s internal reference standard. Specification Frequency range: 9 kHz to 1.2 GHz (2023A). 9 kHz to 2.05 GHz (2023B). 9 kHz to 2.51 GHz (2025). Resolution: 1 Hz.
Page 169 ACCEPTANCE TESTING If the instrument is fitted with Option 4, (high stability frequency standard), use the second Notes 1200 MHz test limits. The test limits quoted are for guidance and assume that the internal frequency standard has recently been adjusted. Aging and stability have to be considered when establishing the real test limits (see ‘Performance data’...
Page 170: Spectral Purity
< 124 dBc/Hz at 20 kHz offset from a 470 MHz carrier Low noise signal +8 dBm from 32.5 MHz to 2.54 GHz Aeroflex 2041 generator SSB phase noise <−127 dBc/Hz from a 470 MHz carrier 50 Ω load 1 W, 50 Ω...
Page 171: Sub- And Non-Harmonics
ACCEPTANCE TESTING Press CAL on the spectrum analyzer. Connect the test equipment as shown in Fig. 7-4. On the UUT set: [CARR FREQ] 10 [kHz] − [RF LEVEL] 4 [dB] Measure the level of the second and third harmonics on the spectrum analyzer at each of the carrier frequencies shown in Table 7-15, checking that the results are within specification.
Page 172: Ssb Phase Noise
ACCEPTANCE TESTING SSB phase noise Test procedure Signal generator RF OUTPUT RF OUTPUT Measuring receiver C2365 Fig. 7-6 SSB phase noise test set-up Connect the test equipment as shown in Fig. 7-6. On the UUT set: [CARR FREQ] 470 [MHz] [RF LEVEL] 0 [dB] On the measuring receiver:...
Page 173: Rf Leakage
ACCEPTANCE TESTING RF leakage Test procedure Spectrum analyzer RF OUTPUT Initial connection ³25 mm RF INPUT Terminate with load Two turn loop 25 mm diameter C5809 Fig. 7-7 RF leakage test set-up Press PRESET then CAL on the spectrum analyzer. Connect the test equipment as shown in Fig.
Page 174: Internal Fm
3% at max. available deviation. Test equipment Description Minimum specification Example FM accuracy ±1% at 1 kHz modulation frequency Modulation meter Aeroflex 2305 with distortion option DC voltage measurement Solartron 7150+ 50 Ω load 1 W, 50 Ω nominal impedance, DC to 2.51 GHz...
Page 175: Fm Scale Shape
ACCEPTANCE TESTING On the UUT set: [CARR FREQ] 10 [MHz] [RF LEVEL] 0 [dB] [MOD] 100 [kHz] [SOURCE ON/OFF] (to enable modulation source) [MOD ON/OFF] (to enable modulation) On the modulation meter, select CAL, FM, 50 Hz ⇒ 15 kHz filter. Measure the FM accuracy and distortion at the carrier frequencies shown in Table 7-22, checking that the results are within specification.
Page 176: External Fm Frequency Response (Alc Off, Dc Coupled)
ACCEPTANCE TESTING External FM frequency response (ALC off, DC coupled) Test procedure 2305 Modulation meter Function generator EXT MOD OUTPUT RF INPUT INPUT OUTPUT OUTPUT Temporary connection Audio analyzer Ω load INPUT C2368 Fig. 7-9 External modulation and modulation distortion test set-up 30 Hz to 275 kHz Connect the test equipment as shown in Fig.
Page 177: External Fm Frequency Response (Alc On)
ACCEPTANCE TESTING Set the function generator to +1.4142 V DC (+1 V DC for units with Option 10). (Temporarily connect the function generator output to the DVM and set this voltage as close as possible to +1.4142 V (+1 V DC for units with Option 10).) Press CARRIER ERROR on the modulation meter.
Page 178: Phase Modulation
Distortion: Test equipment Description Minimum specification Example ΦM and FM accuracy ±2% at 1 kHz modulation Modulation meter Aeroflex 2305 with distortion frequency option Phase modulation Test procedure Connect the test equipment as shown in Fig. 7-8. On the UUT set: [CARR FREQ] 10.5 [MHz]...
Page 179 ACCEPTANCE TESTING On the UUT set: [CARR FREQ] 15 [MHz] [RF LEVEL] 0 [dB] [MENU] 20 [ENTER] The UUT enters the Modulation Mode menu Φ Select M int using [NEXT] [MOD] 10 [rad] [SOURCE ON/OFF] (to enable modulation source) [MOD ON/OFF] (to enable modulation) On the modulation meter, select CAL, FM, 50 Hz ⇒...
Page 180: Amplitude Modulation
Typically 0.1 radians at 30% depth at 470 MHz Test equipment Description Minimum specification Example AM accuracy ±1% at 1 kHz modulation frequency Modulation meter Aeroflex 2305 with distortion option DC voltage measurement Solartron 7150+ 50 Ω load 1 W, 50 Ω nominal impedance, DC to 2.51 GHz...
Page 181: Am Scale Shape
ACCEPTANCE TESTING AM scale shape Test procedure Connect the test equipment as shown in Fig. 7-8. On the UUT set: [CARR FREQ] 100 [MHz] [RF LEVEL] 0 [dB] [MENU] 20 [ENTER] The UUT enters the Modulation Mode menu Select AM int [MOD] 1 [%] [SOURCE ON/OFF] (to enable modulation source)
Page 182 ACCEPTANCE TESTING 0 Hz (DC) 6960B RF power meter Function generator EXT MOD OUTPUT SENSOR INPUT OUTPUT INPUT Temporary connection 6912 Ω Power sensor load C2369 Fig. 7-10 0 Hz external AM and distortion test set-up To measure the AM depth at DC, it is necessary to use the DC offset facility on the function generator, proceeding as follows: (9) Connect the test equipment as shown in Fig.
Page 183: Pulse Modulation
Rise and fall time: Test equipment Description Minimum specification Example ±0.1 dB from 9 kHz to 2.51 GHz Power meter Aeroflex 6960B and 6912 Spectrum Frequency coverage 32 MHz to 2.51 GHz Anritsu MS2602A analyzer 50 Ω load 1 W, 50 Ω nominal impedance, DC to 2.51 GHz...
Page 184: Pulse Modulation On/Off Ratio
ACCEPTANCE TESTING On the UUT set: [CARR FREQ] 32 [MHz] −7 [dB] [RF LEVEL] [MENU] 22 [ENTER] The UUT enters the Pulse Modulation menu. Select 1 (to enable Pulse Mod.) [MOD] then [MOD] then [MOD] again (to select Pulse Mod) [SOURCE ON/OFF] (to enable modulation source) [MOD ON/OFF] (to enable modulation) Set the function generator to provide +5 V DC.
Page 185: Pulse Modulation Rise And Fall Time
ACCEPTANCE TESTING The difference between the levels recorded in (6) and (8) is the pulse mod on/off ratio. Check that the ratio is within specification using Table 7-38. (10) Repeat (5) to (9) for each of the frequencies shown in Table 7-38. Pulse modulation rise and fall time Fig.
Page 186: Modulation Oscillator
ACCEPTANCE TESTING Modulation oscillator Specification Frequency range: 0.01 Hz to 100 kHz Resolution: 5 digits Distortion: Less than 0.1% at 1 kHz Sine (to 100 kHz), square wave (to 50 kHz), triangle wave (to 20 kHz) Waveforms: 2 V RMS EMF from a 10 Ω source impedance Output: Test equipment Description...
Page 187: Modulation Oscillator Distortion And Lf Output Flatness
ACCEPTANCE TESTING Modulation oscillator distortion and LF output flatness Test procedure LF OUTPUT Audio analyzer INPUT C2371 Fig. 7-15 Modulation oscillator distortion test set-up Connect the test equipment as shown in Fig. 7-15. On the UUT set: [SOURCE ON/OFF] (to enable modulation source) [MOD ON/OFF] (to enable modulation) [MOD SOURCE] 1 kHz...
Page 188: Function Generator
ACCEPTANCE TESTING Function generator Specification Level range: 1 mV to 4 V RMS EMF. 1 mV. Resolution: 600 Ω nominal. Source impedance: ±5% + 5 mV. Level accuracy at 1 kHz: Better than ±1 dB relative to 1 kHz. Frequency response: Frequency response Test procedure Connect the test equipment as shown in Fig.
Page 189: External Frequency Standard Input
Input frequencies: 1 MHz or 10 MHz Test equipment Description Minimum specification Example Signal generator 220 mV to 1.8 V RMS, 1 MHz to 10 MHz Aeroflex 2041 or 2030 Test procedure Signal generator FREQ STD IN-OUT RF OUTPUT C2372 Fig.
Page 190: Test Procedures For Instruments Fitted With Option 3
< ± 0.03 dB/ ° C to 2.51 GHz Test equipment Description Minimum specification Example ±0.1 dB from 9 kHz to 2.51 GHz Power meter Aeroflex 6960B and 6932 0 dBm to −127 dBm; 2.5 MHz to 2.51 GHz Measuring Agilent 8902A receiver with 11722A...
Page 191: Alc Linearity
ACCEPTANCE TESTING Connect the test equipment as shown in Fig. 7-17. On the UUT set: [CARR FREQ] 30 [kHz] −4 [dB] [RF LEVEL] Record the output level measured by the power meter against each of the carrier frequencies shown in Table 7-45, checking that the results are within specification. Set the UUT RF level to +7 dBm and repeat (4) using Table 7-46.
Page 192: Carrier Harmonics
ACCEPTANCE TESTING Carrier harmonics Specification As the standard instrument below +7 dBm. Typically better than − 25 dBc for RF levels up to 6 dB below the Harmonics: maximum specified output Test equipment Description Minimum specification Example Spectrum DC to 7.6 GHz frequency coverage Anritsu MS2602A analyzer Test procedure...
Page 194: Test Procedures For Instruments Fitted With Option 12
TEST PROCEDURES FOR INSTRUMENTS FITTED WITH OPTION 12 SINAD Specification SINAD measurement resolution: 0.01 dB. 50 dB. SINAD measurement range: Filter weighting: C-MESSAGE; CCITT P53; None. 1.000 kHz. Modulation frequency: 3 V RMS (maximum safe input level ± 15 V). Maximum input level: 50 mV RMS (250 mV RMS for 50 dB SINAD).
Page 195 ACCEPTANCE TESTING Set FM1 Deviation as follows: [MOD] 10 [kHz] [MOD ON/OFF] [SOURCE ON/OFF] Set FM2 Deviation as follows: [MOD][MOD] 1.0 [kHz] [SOURCE ON/OFF] Enable SINAD as follows: [MENU] 49 [ENTER] Select Weighting using [NEXT] Set Unweighted by pressing 0 Select SINAD by using [NEXT] Enable SINAD by pressing 1 If Option 7 or 11 is fitted, do the following also:...
Page 196: Acceptance Test Results Tables
ACCEPTANCE TESTING ACCEPTANCE TEST RESULTS TABLES For 2023A [ ] signal generator, serial number _ _ _ _ _ _ / _ _ _ 2023B [ ] 2025 Option 1 [ ] no attenuator Option 2 [ ] DC operation...
Page 197 ACCEPTANCE TESTING Table 7-1 RF output at −4 dBm (not Option 3 or 11) Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) −4.8 −3.2 0.03 _______ −4.8 −3.2 0.33 _______ −4.8 −3.2 _______ −4.8 −3.2 _______ −4.8 −3.2...
Page 198 ACCEPTANCE TESTING Table 7-2 RF output at +7 dBm (not Option 3 or 11) Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) 0.03 +6.2 _______ +7.8 0.33 +6.2 _______ +7.8 +6.2 _______ +7.8 +6.2 _______ +7.8 +6.2 _______...
Page 199 ACCEPTANCE TESTING Table 7-3 RF output at +13 dBm (not Option 3 or 11) Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) 0.03 +12.2 _______ +13.8 0.33 +12.2 _______ +13.8 +12.2 _______ +13.8 +12.2 _______ +13.8 +12.2 _______...
Page 200 ACCEPTANCE TESTING Table 7-4 ALC linearity at 2.5 MHz (not Option 3 or 11) RF level (dBm) RF level min. Result (dBm) RF level max. (dBm) (dBm) −4 −4.8 −3.2 _______ −3 −3.8 −2.2 _______ −2 −2.8 −1.2 _______ −1 −1.8 −0.2 _______...
Page 201 ACCEPTANCE TESTING Table 7-5 ALC linearity at 950 MHz (not Option 3 or 11) RF level (dBm) RF level min. Result (dBm) RF level max. (dBm) (dBm) −4 −4.8 −3.2 _______ −3 −3.8 −2.2 _______ −2 −2.8 −1.2 _______ −1 −1.8 −0.2 _______...
Page 202 ACCEPTANCE TESTING Table 7-6 ALC linearity at 2050 MHz (2023B and 2025, not Option 3 or 11) RF level (dBm) RF level min. Result (dBm) RF level max. (dBm) (dBm) −4 −5.2 −2.8 _______ −3 −4.2 −1.8 _______ −2 −3.2 −0.8 _______ −1...
Page 203 ACCEPTANCE TESTING Table 7-7 ALC linearity at 2510 MHz (2025 only, not Option 3 or 11) RF level (dBm) RF Level Min. Result (dBm) RF Level Max. (dBm) (dBm) −4 −5.6 −2.4 _______ −3 −4.6 −1.4 _______ −2 −3.6 −0.4 _______ −1 −2.6...
Page 204 ACCEPTANCE TESTING Table 7-8 Attenuator test at 2.6 MHz RF Level (dBm) RF level min. Result (dBm) RF level max. (dBm) (dBm) −0.8 _______ +0.8 −4.1 −4.9 −3.3 _______ −15.1 −15.9 −14.3 _______ −26.1 −26.9 −25.3 _______ −37.1 −37.9 −36.3 _______ −48.1 −48.9...
Page 205 ACCEPTANCE TESTING Table 7-10 Attenuator test at 1199 MHz RF Level (dBm) RF level min. Result (dBm) RF level max. (dBm) (dBm) −0.8 _______ +0.8 −4.1 −4.9 −3.3 _______ −15.1 −15.9 −14.3 _______ −26.1 −26.9 −25.3 _______ −37.1 −37.9 −36.3 _______ −48.1 −48.9...
Page 206 ACCEPTANCE TESTING Table 7-12 Attenuator test at 2050 MHz (2023B) or 2510 MHz (2025) RF level (dBm) RF level min. Result (dBm) RF level max. (dBm) (dBm) −1.2 _______ +1.2 −4.1 −5.3 −2.9 _______ −15.1 −16.3 −13.9 _______ −26.1 −27.3 −24.9 _______ −37.1...
Page 207 ACCEPTANCE TESTING Table 7-14 Carrier frequency tests Frequency (MHz) Frequency min. Result (MHz) Frequency max. (MHz) (MHz) − − 0.009 _______ − − _______ − − 9.999999 _______ − − 18.75 _______ − − 37.5 _______ − − _______ − −...
Page 208 ACCEPTANCE TESTING Table 7-15 Carrier harmonic tests at −4 dBm (not Option 3 or 11) Carrier 2nd harmonic Result (dBc) 3rd harmonic Result (dBc) frequency (MHz) max. level max. level (dBc) (dBc) −30 −30 0.01 _______ _______ −30 −30 _______ _______ −30 −30...
Page 209 ACCEPTANCE TESTING Table 7-16 Carrier harmonic tests at +7 dBm (not Option 3 or 11) Carrier 2nd harmonic Result (dBc) 3rd harmonic Result (dBc) frequency (MHz) max. level max. level (dBc) (dBc) −30 −30 0.01 _______ _______ −30 −30 _______ _______ −30 −30...
Page 210 ACCEPTANCE TESTING Table 7-17 Carrier harmonic tests at +13 dBm (not Option 3 or 11) Carrier 2nd harmonic Result (dBc) 3rd harmonic Result (dBc) frequency (MHz) max. level max. level (dBc) (dBc) −25 −25 0.01 _______ _______ −25 −25 _______ _______ −25 −25...
Page 211 ACCEPTANCE TESTING Table 7-18 Carrier non-harmonic tests Sub-harmonic output Sub-harmonic output Carrier Non-harmonic Non-harmonic Result (dBc) Non-harmonic Non-harmonic Result (dBc) frequency frequency level (dBc) frequency level (dBc) (MHz) (MHz) (MHz) −64 −64 1201 800.6667 _______ 1601.3333 _______ −64 −64 1201 400.3333 _______ 2001.6667...
Page 212 ACCEPTANCE TESTING Table 7-22 Internal FM deviation and distortion tests at 100 kHz deviation FM deviation Distortion Carrier FM deviation Result (kHz) FM deviation Distortion (%) Result (%) frequency min. (kHz) max. (kHz) (MHz) _______ <3% _______ 10.144 _______ <3% _______ 10.292 _______...
Page 213 ACCEPTANCE TESTING Table 7-24 Carrier error test at 1.2 GHz, FM deviation 100 kHz Carrier error Result (kHz) <1 kHz _______ Table 7-25 External FM frequency response (ALC off, DC coupled), 50 kHz deviation Modulation Response Result (dB) Response Distortion Result (%) frequency (kHz) level min.
Page 214 ACCEPTANCE TESTING Table 7-27 External FM frequency response (ALC on), 10 kHz deviation, 1.25 V input Modulation Response Result (dB) Response Distortion Result (%) frequency (kHz) level min. level max. (dB) (dB) −1 − − 0.02 _______ −1 _______ <3 _______ −1 −...
Page 215 ACCEPTANCE TESTING Table 7-30 Internal AM depth and distortion tests at −4 dBm AM depth 30% AM depth 80% Distortion Carrier min. Result max. min. Result max. Result at Result at frequency 30% depth 80% depth (MHz) (<1.5%) (<2.5%) 28.5 _____ 31.5 _____...
Page 216 ACCEPTANCE TESTING Table 7-32 Internal AM depth and distortion tests at +7 dBm AM depth 30% AM depth 80% Distortion Carrier min. Result max. min. Result max. Result at Result at frequency 30% depth 80% depth (MHz) (<1.5%) (<2.5%) 28.5 _____ 31.5 _____...
Page 217 ACCEPTANCE TESTING Table 7-35 External AM frequency response (ALC off, DC coupled), RF level +7 dBm Modulation Response Result (dB) Response level frequency (kHz) level min. (dB) max. (dB) −1 _______ −1 _______ −1 _______ − − reference −1 _______ −1 _______ −1...
Page 218 ACCEPTANCE TESTING Table 7-36 Pulse modulation RF output at −7 dBm (not Option 7 or 11) Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) −8.3 _______ +5.7 −8.3 _______ +5.7 −8.3 _______ +5.7 −8.3 _______ +5.7 −8.3 _______...
Page 219 ACCEPTANCE TESTING Table 7-37 Pulse modulation RF output at +4 dBm (not Option 7 or 11) Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) +2.7 _______ +5.3 +2.7 _______ +5.3 +2.7 _______ +5.3 +2.7 _______ +5.3 +2.7 _______...
Page 220 ACCEPTANCE TESTING Table 7-38 Pulse modulation on/off ratio test (not Option 7 or 11) Carrier frequency Pulse mod. on/off Measured value (dB) (MHz) ratio (dB) >45 _______ >45 _______ >45 _______ 1000 >45 _______ 1200 >45 _______ 2023B and 2025 1500 >40 _______...
Page 221 ACCEPTANCE TESTING Table 7-42 Function generator output tests Mod. oscillator Response Result Response Result (%) frequency (Hz) level min. level max. (dB) (dB) −1 − _______ −1 − _______ −1 − _______ −1 − _______ −1 − _______ −1 − _______ −1 −...
Page 222 ACCEPTANCE TESTING ACCEPTANCE TEST RESULTS TABLES OPTION 3 Table 7-45 RF output at −4 dBm Carrier Frequency RF Level Min. Result (dBm) RF Level Max. (MHz) (dBm) (dBm) −4.8 −3.2 0.03 _______ −4.8 −3.2 0.33 _______ −4.8 −3.2 _______ −4.8 −3.2 _______ −4.8...
Page 223 ACCEPTANCE TESTING Table 7-46 RF Output at +7 dBm Carrier Frequency RF Level Min. Result (dBm) RF Level Max. (MHz) (dBm) (dBm) 0.03 _______ 0.33 _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ 1020 _______ 1140 _______ 1200 _______...
Page 224 ACCEPTANCE TESTING Table 7-47 RF Output at +25 dBm Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) 0.03 +23.5 _______ +26.5 0.33 +23.5 _______ +26.5 +23.5 _______ +26.5 +23.5 _______ +26.5 +23.5 _______ +26.5 +23.5 _______ +26.5 +23.5...
Page 225 ACCEPTANCE TESTING Table 7-48 ALC linearity at 2.5 MHz RF level (dBm) RF Level Min. Result (dBm) RF Level Max. (dBm) (dBm) −4 −4.8 −3.2 _______ −3 −3.8 −2.2 _______ −2 −2.8 −1.2 _______ −1 −1.8 −0.2 _______ −0.8 _______ +0.8 _______ +1.8...
Page 226 ACCEPTANCE TESTING Table 7-49 ALC linearity at 950 MHz RF level (dBm) RF Level Min. Result (dBm) RF Level Max. (dBm) (dBm) −4 −4.8 −3.2 _______ −3 −3.8 −2.2 _______ −2 −2.8 −1.2 _______ −1 −1.8 −0.2 _______ −0.8 _______ +0.8 _______ +1.8...
Page 227 ACCEPTANCE TESTING Table 7-50 ALC linearity at 2050 MHz RF level (dBm) RF Level Min. Result (dBm) RF Level Max. (dBm) (dBm) −4 −5.2 −2.8 _______ −3 −4.2 −1.8 _______ −2 −3.2 −0.8 _______ −1 −2.2 _______ +0.2 −1.2 _______ +1.2 −0.2 _______...
Page 228 ACCEPTANCE TESTING Table 7-51 ALC linearity at 2510 MHz RF level (dBm) RF Level Min. Result (dBm) RF Level Max. (dBm) (dBm) −4 −5.6 −2.4 _______ −3 −4.6 −1.4 _______ −2 −3.6 −0.4 _______ −1 −2.6 _______ +0.6 −1.6 _______ +1.6 −0.6 _______...
Page 229 ACCEPTANCE TESTING Table 7-52 Carrier harmonic tests at −4 dBm Carrier 2nd harmonic Result (dBc) 3rd harmonic Result (dBc) frequency (MHz) max. level (dBc) max. level (dBc) −30 −30 0.01 _______ _______ −30 −30 _______ _______ −30 −30 _______ _______ −30 −30 _______...
Page 230 ACCEPTANCE TESTING Table 7-53 Carrier harmonic tests at +7 dBm Carrier 2nd harmonic Result (dBc) 3rd harmonic Result (dBc) frequency (MHz) max. level (dBc) max. level (dBc) −25 −25 0.01 _______ _______ −25 −25 _______ _______ −25 −25 _______ _______ −25 −25 _______...
Page 231 ACCEPTANCE TESTING Table 7-54 Carrier harmonic tests at +13 dBm Carrier 2nd harmonic Result (dBc) 3rd harmonic Result (dBc) frequency (MHz) max. level max. level (dBc) (dBc) −25 −25 0.01 _______ _______ −25 −25 _______ _______ −25 −25 _______ _______ −25 −25 _______...
Page 232 ACCEPTANCE TESTING Table 7-55 Carrier harmonic tests at +19 dBm Carrier 2nd harmonic Result (MHz) 3rd harmonic Result (MHz) frequency (MHz) max. level max. level (dBc) (dBc) −25 −25 0.01 _______ _______ −25 −25 _______ _______ −25 −25 _______ _______ −25 −25 _______...
Page 233 ACCEPTANCE TESTING ACCEPTANCE TEST RESULTS TABLES OPTION 12 Table 7-56 SINAD measurement accuracy SINAD (dB) Min. (dB) Result (dB) Max. (dB) 19.5 _______ 20.5 Table 7-57 SINAD sensitivity SINAD (dB) Result (dB) >50 _______ 7-76...
Page 234 Annex A OPTION 7 FAST PULSE MODULATION Contents General description........................A-2 Performance data ........................A-2 Controls and connectors ......................A-3 Front-panel connectors ......................A-3 Rear-panel connectors ......................A-4 Operation ............................ A-5 Pulse modulation selection ....................A-5 Remote operation ........................ A-5 Brief technical description......................
Page 235: General Description
OPTION 7 FAST PULSE MODULATION General description Option 7 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 236: Controls And Connectors
OPTION 7 FAST PULSE MODULATION Controls and connectors The following sections replace those with the same titles in Chapter 4 in the main body of the manual. Front-panel connectors The front-panel connectors are shown in Fig. A-0 below: Fig. A-1 2023B front panel showing SUPPLY switch and connectors SUPPLY switch Switches the supply on and off using a press on, press off action.
Page 237: Rear-Panel Connectors
OPTION 7 FAST PULSE MODULATION Rear-panel connectors The rear-panel connectors are shown in Fig. A-2 below. 27 28 POWER SUPPLY TRIGGER 100-120V 50-400Hz PULSE FREQ STD IEEE 488.2 4FSK 210-240V 50-60Hz 2FSK INPUT IN-OUT RS232 200VA MAX FUSE RATING T2AL250V SUPPLY FUSE T10AH250V...
Page 238: Operation
OPTION 7 FAST PULSE MODULATION Operation The following sections replace those with the same titles in Chapter Pulse modulation selection Pulse modulation may be selected in addition to any other normal modulation modes. The source is external only from the front-panel PULSE INPUT socket. Selection may be made as follows: Select the Util 22: Pulse Modulation menu.
Page 239: Brief Technical Description
OPTION 7 FAST PULSE MODULATION Brief technical description Block diagram Fig. A-4 replaces that given in Chapter 6 in the main body of the manual. This shows that for an instrument fitted with Option 7: The front-panel EXT MOD INPUT socket is replaced by the PULSE INPUT socket. The front-panel former LF OUTPUT socket performs the dual functions of MOD I/O.
Page 240: Acceptance Testing
OPTION 7 FAST PULSE MODULATION Acceptance testing The following acceptance tests supersede those given under Pulse modulation in Chapter 7. Pulse modulation Specification Carrier frequency range: 100 kHz to 2.51 GHz (usable to 9 kHz). RF level range: Maximum guaranteed output is reduced to +10 dBm when pulse modulation is selected.
Page 241 OPTION 7 FAST PULSE MODULATION Pulse modulation RF level frequency response 6960B RF power meter PULSE INPUT Function generator SENSOR OUTPUT OUTPUT INPUT 6912 Power sensor C3852 Fig. A-5 Pulse modulation test set-up Test procedure Perform AUTO ZERO and AUTO CAL on the power meter. Connect the test equipment as shown in Fig.
Page 242 OPTION 7 FAST PULSE MODULATION Pulse modulation on/off ratio Spectrum analyzer Function generator PULSE OUTPUT RF INPUT OUTPUT INPUT C5805 Fig. A-6 Pulse modulation on/off ratio test set-up Test procedure Press CAL on the spectrum analyzer. Connect the test equipment as shown in Fig. A-6. On the UUT set: [CARR FREQ] 100 [kHz]...
Page 243 OPTION 7 FAST PULSE MODULATION Pulse modulation rise and fall time PULSE Oscilloscope INPUT Function generator OUTPUT OUTPUT RF DETECTOR C3854 Fig. A-7 Pulse modulation rise and fall time test set-up Test procedure Connect the test equipment as shown in Fig. A-7. On the UUT set: [CARR FREQ] 1 [GHz]...
Page 244 OPTION 7 FAST PULSE MODULATION ACCEPTANCE TEST RESULTS TABLES for Option 7 (fast pulse modulator) Table A-1 Pulse mod. RF output at −7 dBm Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) −7.8 −6.2 _______ −7.8 −6.2 _______...
Page 245 OPTION 7 FAST PULSE MODULATION Table A-2 Pulse mod. RF output at 0 dBm Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) −0.8 _______ +0.8 −0.8 _______ +0.8 −0.8 _______ +0.8 −0.8 _______ +0.8 −0.8 _______ +0.8 −0.8...
Page 246 OPTION 7 FAST PULSE MODULATION Table A-3 Pulse mod. RF output at +16 dBm Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ 1050 _______ 1170...
Page 247 OPTION 7 FAST PULSE MODULATION Table A-4 Pulse modulation on/off ratio test Carrier frequency Pulse mod. on/off Measured value (dB) (MHz) ratio (dB) >80 _______ >80 _______ >80 _______ >80 _______ 1000 >80 _______ 1200 >80 _______ 2023B and 2025 1500 >70 _______...
Page 248 Annex B OPTION 11 FAST PULSE AND HIGH POWER Contents General description........................B-2 Performance data .........................B-2 Controls and connectors ......................B-3 Front-panel connectors ......................B-3 Rear-panel connectors ......................B-4 Operation .............................B-5 Pulse modulation selection ....................B-5 Remote operation .........................B-5 Brief technical description......................B-6 Acceptance testing........................B-7 RF output.............................B-7 RF level frequency response ....................B-7 ALC linearity........................B-8 Carrier harmonics ........................B-8...
Page 249: General Description
OPTION 11 FAST PULSE AND HIGH POWER General description Option 11 increases the maximum output from the normal +13 dBm and adds the ability for the instrument to internally generate a fast pulse modulated waveform at a high power level from logic levels applied to the PULSE INPUT socket.
Page 250: Controls And Connectors
OPTION 11 FAST PULSE AND HIGH POWER Controls and connectors The following sections replace those with the same titles in Chapter 4 in the main body of the manual. Front-panel connectors The front-panel connectors are shown in Fig. B-1 below: Fig.
Page 251: Rear-Panel Connectors
OPTION 11 FAST PULSE AND HIGH POWER Rear-panel connectors The rear-panel connectors are shown in Fig. B-2 below. 27 28 POWER SUPPLY TRIGGER 100-120V 50-400Hz PULSE FREQ STD IEEE 488.2 4FSK 210-240V 50-60Hz 2FSK INPUT IN-OUT RS232 200VA MAX FUSE RATING T2AL250V SUPPLY FUSE T10AH250V...
Page 252: Operation
OPTION 11 FAST PULSE AND HIGH POWER Operation The following sections replace those with the same titles in Chapter 4 in the main body of the manual. Pulse modulation selection Pulse modulation may be selected in addition to any other normal modulation modes. The source is external only, from the front-panel PULSE INPUT socket.
Page 253: Brief Technical Description
OPTION 11 FAST PULSE AND HIGH POWER Brief technical description Block diagram Fig. B-4 replaces that given in Chapter 6 in the main body of the manual. This shows that for an instrument fitted with Option 11: The front-panel EXT MOD INPUT socket is replaced by the PULSE INPUT socket. The front-panel former LF OUTPUT socket performs the dual functions of MOD I/O.
Page 254: Acceptance Testing
<±0.03 dB/°C to 2.51 GHz Test equipment Description Minimum specification Example ±0.1 dB from 9 kHz to 2.51 GHz Power meter Aeroflex 6960B and 6932 0 dBm to −127 dBm; 2.51 MHz to 2.51 GHz Measuring Agilent 8902A receiver with 11722A...
Page 255: Alc Linearity
OPTION 11 FAST PULSE AND HIGH POWER Perform AUTO ZERO and AUTO CAL on the power meter. Connect the test equipment as shown in Fig. B-5. On the UUT set: [CARR FREQ] 30 [kHz] −4 [dB] [RF LEVEL] Record the output level measured by the power meter against each of the carrier frequencies shown in Table B-1, checking that the results are within specification.
Page 256 OPTION 11 FAST PULSE AND HIGH POWER Test procedure Spectrum analyzer RF OUTPUT RF INPUT C5803 Fig. B-6 Carrier harmonics test set-up Press CAL on the spectrum analyzer. Connect the test equipment as shown in Fig. B-6. On the UUT set: [CARR FREQ] 10 [kHz] −4 [dB]...
Page 257 OPTION 11 FAST PULSE AND HIGH POWER Test equipment Description Minimum specification Example ±0.1 dB from 9 kHz to 2.51 GHz Power meter Aeroflex 6960B and 6912 Spectrum Frequency coverage 100 kHz to 2.51 GHz Anritsu MS2602A analyzer 50 Ω load 1 W, 50 Ω...
Page 258 OPTION 11 FAST PULSE AND HIGH POWER Pulse modulation on/off ratio Spectrum analyzer Function generator PULSE OUTPUT RF INPUT OUTPUT INPUT C5805 Fig. B-8 Pulse modulation on/off ratio test set-up Test procedure Press CAL on the spectrum analyzer. Connect the test equipment as shown in Fig. B-8. On the UUT set: [CARR FREQ] 100 [kHz]...
Page 259 OPTION 11 FAST PULSE AND HIGH POWER Pulse modulation rise and fall time Fig. B-9 Pulse modulation rise and fall time test set-up Test procedure Connect the test equipment as shown in Fig. B-9. On the UUT set: [CARR FREQ] 1 [GHz] [RF LEVEL] +7 [dB]...
Page 260 OPTION 11 FAST PULSE AND HIGH POWER ACCEPTANCE TEST RESULTS TABLES OPTION 11 Table B-1 RF output at −4 dBm Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) −4.8 −3.2 0.03 _______ −4.8 −3.2 0.33 _______ −4.8 −3.2...
Page 261 OPTION 11 FAST PULSE AND HIGH POWER Table B-2 RF output at +7 dBm Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) 0.03 _______ 0.33 _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ 1020...
Page 262 OPTION 11 FAST PULSE AND HIGH POWER Table B-3 RF output at +25 dBm Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) 0.03 +23.5 _______ +26.5 0.33 +23.5 _______ +26.5 +23.5 _______ +26.5 +23.5 _______ +26.5 +23.5 _______...
Page 263 OPTION 11 FAST PULSE AND HIGH POWER Table B-4 ALC linearity at 2.5 MHz RF level (dBm) RF level min. Result (dBm) RF level max. (dBm) (dBm) −4 −4.8 −3.2 _______ −3 −3.8 −2.2 _______ −2 −2.8 −1.2 _______ −1 −1.8 −0.2 _______...
Page 264 OPTION 11 FAST PULSE AND HIGH POWER Table B-5 ALC linearity at 950 MHz RF level (dBm) RF level min. Result (dBm) RF level max. (dBm) (dBm) −4 −4.8 −3.2 _______ −3 −3.8 −2.2 _______ −2 −2.8 −1.2 _______ −1 −1.8 −0.2 _______...
Page 265 OPTION 11 FAST PULSE AND HIGH POWER Table B-6 ALC linearity at 2050 MHz RF level (dBm) RF level min. Result (dBm) RF level max. (dBm) (dBm) −4 −5.2 −2.8 _______ −3 −4.2 −1.8 _______ −2 −3.2 −0.8 _______ −1 −2.2 _______ +0.2...
Page 266 OPTION 11 FAST PULSE AND HIGH POWER Table B-7 ALC linearity at 2510 MHz RF level (dBm) RF level min. Result (dBm) RF level max. (dBm) (dBm) −4 −5.6 −2.4 _______ −3 −4.6 −1.4 _______ −2 −3.6 −0.4 _______ −1 −2.6 _______ +0.6...
Page 267 OPTION 11 FAST PULSE AND HIGH POWER Table B-8 Carrier harmonic tests at −4 dBm Carrier 2nd harmonic Result (dBc) 3rd harmonic Result (dBc) frequency (MHz) max. level (dBc) max. level (dBc) −30 −30 0.01 _______ _______ −30 −30 _______ _______ −30 −30...
Page 268 OPTION 11 FAST PULSE AND HIGH POWER Table B-9 Carrier harmonic tests at +7 dBm Carrier 2nd harmonic Result (dBc) 3rd harmonic Result (dBc) frequency (MHz) max. level (dBc) max. level (dBc) −25 −25 0.01 _______ _______ −25 −25 _______ _______ −25 −25...
Page 269 OPTION 11 FAST PULSE AND HIGH POWER Table B-10 Carrier harmonic tests at +13 dBm Carrier 2nd harmonic Result (dBc) 3rd harmonic Result (dBc) frequency (MHz) max. level max. level (dBc) (dBc) −25 −25 0.01 _______ _______ −25 −25 _______ _______ −25 −25...
Page 270 OPTION 11 FAST PULSE AND HIGH POWER Table B-11 Carrier harmonic tests at +19 dBm Carrier 2nd harmonic Result (dBc) 3rd harmonic Result (dBc) frequency (MHz) max. level max. level (dBc) (dBc) −25 −25 0.01 _______ _______ −25 −25 _______ _______ −25 −25...
Page 271 OPTION 11 FAST PULSE AND HIGH POWER Table B-12 Pulse mod. RF output at −7 dBm Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) −7.8 −6.2 _______ −7.8 −6.2 _______ −7.8 −6.2 _______ −7.8 −6.2 _______ −7.8 −6.2...
Page 272 OPTION 11 FAST PULSE AND HIGH POWER Table B-13 Pulse mod. RF output at 0 dBm Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) −0.8 _______ +0.8 −0.8 _______ +0.8 −0.8 _______ +0.8 −0.8 _______ +0.8 −0.8 _______...
Page 273 OPTION 11 FAST PULSE AND HIGH POWER Table B-14 Pulse mod. RF output at +16 dBm Carrier frequency RF level min. Result (dBm) RF level max. (MHz) (dBm) (dBm) _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ _______ 1050...
Page 274 OPTION 11 FAST PULSE AND HIGH POWER Table B-15 Pulse modulation on/off ratio test Carrier frequency Pulse mod. on/off Measured value (dB) (MHz) ratio (dB) >80 _______ >80 _______ >80 _______ >80 _______ 1000 >80 _______ 1200 >80 _______ 2023B and 2025 1500 >70 _______...
Page 275 Annex C OPTION 100 INTERNAL FIXED PULSE GENERATOR Contents General description........................C-2 Performance data .........................C-2 Operation .............................C-2 Pulse modulation selection ....................C-2 Remote operation.........................C-3 Pulse modulation ........................C-3 List of figures Fig. C-1 Pulse modulation menu ....................C-2 Annex-C-1...
Page 276 RF carrier. It may be used in conjunction with other forms of modulation to form composite signals. Familiarity with normal operation of the signal generator is assumed. Performance data The following specification is in addition to that included in the 2023A/2023B/2025 specification. 32 MHz to 2.4 GHz. Carrier frequency range:...
Page 277 OPTION 100 INTERNAL PULSE GENERATOR For internal modulation press [MOD SOURCE] to display ModF and enter your required PRF in the range 10 Hz to 1 kHz. The closest available PRF is displayed, to 1 Hz resolution. Press [MOD ON/OFF] until ON is displayed. To generate the pulse modulation, press [SOURCE ON/OFF] until either INT ON or EXT ON is displayed.
Page 278 Index .............. 5-10 *ESR? *IDN?............... 5-9 ............... 5-10 *OPC About this manual............ ii ............. 5-10 *OPC? Adjusting the display.......... 4-50 *OPT? .............. 5-9 ALC linearity test ..........7-8 *RST?............. 5-10 AM depth and distortion test ......7-23 ............... 5-10 *SRE AM scale shape test ..........
Page 279 INDEX MTRIG ............5-28 Modulation oscillator distortion and LF output MTRIG?............5-28 flatness test ............. 7-30 OPER? ............5-34 Modulation oscillator frequencies test....7-29 PGEN..............5-24 Modulation selection .......... 4-27 PGEN? ............5-24 Modulation source phase adjustment ....4-26 PM ..............5-19 PM?..............5-19 POWUP ............5-35 Naming conventions..........ii POWUP? ............5-35 PULSE ............5-23 PULSE? ............5-23...
Page 280 INDEX Status byte ........5-37, 5-44, 5-45 Status data structure..........5-38 Test procedures for Option 12......7-37 Sub- and non-harmonics test ......7-14 Test procedures for Option 3......7-33 Sweep control ............. 4-19 Tilt warning.............vi Sweep mode............4-18 Toxic hazards ............vi Index-3...

This manual is also suitable for:

2025 2023b

Aeroflex 2023A Operating Manual

Table of Contents

Chapter 1 General Information

Chapter 2 Installation

Chapter 4 Local Operation

Chapter 5 Remote Operation

Chapter 7 Acceptance Testing

Annex a Option 7 Fast Pulse Modulation

Annex B Option 11 Fast Pulse and High Power

Quick Links

Chapters

Need help?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Aeroflex 2023A

Summary of Contents for Aeroflex 2023A