Aeroflex 3002 Operating Manual

3002 9 kHz - 2.4 GHz This manual applies to instruments with software issues of 2.00 and higher.  Aeroflex International Ltd. 2004 No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, or recorded by any information storage or retrieval system, without permission in writing by Aeroflex International Ltd. (hereafter referred to throughout the document as ‘Aeroflex’). Printed in the UK Manual part no. 46892/226 (PDF version) Based on Issue 8 of the printed manual 8 July 2004

This manual explains how to use the 3002 AM/FM Signal Generators. Intended audience Persons engaged on work relating to equipment who have a need for accurately generated signals in the VHF and UHF spectrum. Structure Chapter 1 Main features and performance data. Chapter 2 Installation and power-up. Chapter 3 Programming with keywords and sample programs. Chapter 4 Brief technical description. Chapter 5 Instructions for doing acceptance testing. Annex A Fast pulse modulation. Document conventions The following conventions apply throughout this manual: RF OUT Titles marked on the instrument panel are shown in capital letters

Chapter 2 INSTALLATION AND POWER-UP.......................................................................2-1 Chapter 3 PROGRAMMING.....................................................................................................3-1 MISCELLANEOUS COMMANDS ...................................................................3-29 STATUS BYTE..................................................................................................3-33 ERROR MESSAGES .........................................................................................3-43 Chapter 4 TECHNICAL DESCRIPTION.................................................................................4-1 Chapter 5 ACCEPTANCE TESTING .......................................................................................5-1 TEST PROCEDURES..........................................................................................5-5 Annex A OPTION 11 FAST PULSE MODULATION ...........................................................A-1 Index ..............................................................................................................................1-1

EP 0322139 GB 2214012 US 4870384 EP 0125790 GB 2140232 US 4609881

WARNING information to prevent personal injury. information to prevent damage to the equipment. important general information. Symbols The meaning of hazard symbols appearing on the equipment and in the documentation is as follows: Symbol Description Refer to the operating manual when this symbol is marked on the instrument. Familiarize yourself with the nature of the hazard and the actions that may have to be taken. Toxic hazard Static sensitive components General conditions of use This product is designed and tested to comply with the requirements of IEC/EN61010-1 ‘Safety requirements for electrical equipment for measurement, control and laboratory use’, for Class III portable equipment and is for use in a pollution degree 2 environment. The equipment is designed to operate from an installation category I supply. Equipment should be protected from the ingress of liquids and precipitation such as rain, snow, etc. When moving the equipment from a cold to a hot environment, it is important to allow the temperature of the equipment to stabilize before it is connected to the supply to avoid condensation forming. The equipment must only be operated within the environmental conditions specified in Chapter 1 ‘Performance data’ in the Operating/Instruction manual, otherwise the protection provided by the equipment may be impaired. This product is not approved for use in hazardous atmospheres or medical applications. If the equipment is to be used in a safety-related application, e.g. avionics or military applications, the suitability of the product must be assessed and approved for use by a competent person. WARNING Electrical hazards (DC supply voltage) This equipment conforms with IEC safety Class III, meaning that for continued safety it must only be connected to supplies and signal sources which conform to ‘Separated Extra-Low Voltage’ (SELV and SELV-E) voltage and insulation requirements. No hazardous voltages are generated internally. See under ‘Performance data’ in Chapter 1 for the maximum permitted voltage levels that can be applied. 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 rear of manual.

should be referred to qualified Personnel. For continued protection against fire, fuses must only be replaced with those of the correct rating and type. WARNING Toxic hazards Some of the components used in this equipment may include resins and other materials which give off toxic fumes if incinerated. Take appropriate precautions, therefore, in the disposal of these items. WARNING Beryllia Beryllia (beryllium oxide) is used in the construction of some of the components in this equipment. This material, when in the form of fine dust or vapour and inhaled into the lungs, can cause a respiratory disease. In its solid form, as used here, it can be handled quite safely although it is prudent to avoid handling conditions which promote dust formation by surface abrasion. Because of this hazard, you are advised to be very careful in removing and disposing of these components. Do not put them in the general industrial or domestic waste or despatch them by post. They should be separately and securely packed and clearly identified to show the nature of the hazard and then disposed of in a safe manner by an authorized toxic waste contractor. WARNING Beryllium copper Some mechanical components within this instrument are manufactured from beryllium copper. This is an alloy with a beryllium content of approximately 5%. It represents no risk in normal use. The material should not be machined, welded or subjected to any process where heat is involved. It must be disposed of as “special waste”. It must NOT be disposed of by incineration. Static sensitive components This equipment contains static sensitive components which may be damaged by handling - refer to the Maintenance Manual for handling precautions. Voltage restraint Excessive voltages can damage the instrument. Ensure that applied signal voltages are within the limits marked on the front panel.

the mainframe off first and then on again afterwards, then run the resource manager again for normal operation. Suitability for use This equipment has been designed and manufactured by Aeroflex to generate low-power RF signals for testing radio communications apparatus. If the equipment is not used in a manner specified by Aeroflex, the protection provided by the equipment may be impaired. Aeroflex has no control over the use of this equipment and cannot be held responsible for events arising from its use other than for its intended purpose.

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 Nature du risque Reportez-vous au manuel d'utilisation quand ce symbole apparaît sur l'instrument. Familiarisez-vous avec la nature du danger et la conduite à tenir. Danger produits toxiques Conditions générales d’utilisation Ce produit a été conçu et testé pour être conforme aux exigences des normes CEI/EN61010-1 “Règles de sécurité pour appareils électriques de mesurage, de régulation et de laboratoire”, pour des équipements Classe III portables et pour une utilisation dans un environnement de pollution de niveau 2. Cet équipement est conçu pour fonctionner à partir d’une alimentation de catégorie I. Cet équipement doit être protégé de l’introduction de liquides ainsi que des précipitations d’eau, de neige, etc... Lorsqu’on transporte cet équipement d’un environnement chaud vers un environnement froid, il est important de laisser l’équipement se stabiliser en température avant de le connecter à une alimentation afin d’éviter toute formation de condensation. L'appareil doit être utilisé uniquement dans le cadre des conditions d'environnement spécifiées au chapitre 1 "Performance data" du manuel d'utilisation, toute autre utilisation peut endommager les systèmes de protection. Ce produit n’est pas garanti pour fonctionner dans des atmosphères dangereuses ou pour un usage médical. Si l'équipement doit être utilisé pour des applications en relation avec la sécurité, par exemple des applications militaires ou aéronautiques, la compatibilité du produit doit être établie et approuvée par une personne compétente. WARNING Sécurité électrique (tension d’alimentation continue) Cet équipement est conforme aux normes de sécurité CEI Classe III, c’est-à-dire qu’il ne doit être connecté qu’à des sources d’alimentation ou de signaux qui suivent les recommandations de tension et d’isolement du type ‘Tension extra-faible séparée’ (SELV at SELV-E). Aucune tension dangereuse n’est générée en interne. “Performance data” dans le chapitre 1 du manuel d’utilisation précise les niveaux de tension maximum acceptables en entrée. Ne démontez pas le capot de l'instrument, car ceci peut provoquer des blessures. Il n'y a pas de pièces remplaçables par l'utilisateur à l'intérieur.

Maintenance Internationaux dans la liste jointe à la fin du manuel. WARNING Risque lié au feu L'accès aux fusibles d'alimentation se fait après démontage d'un couvercle de protection extérieur. Cette manipulation est à la charge d'un personnel qualifié. Pour un protection continue contre le feu, les fusibles de remplacement doivent de type et de valeur adaptés. WARNING Danger produits toxiques Certains composants utilisés dans cet appareil peuvent contenir des résines et d’autres matières qui dégagent des fumées toxiques lors de leur incinération. Les précautions d’usages doivent donc être prises lorsqu’on se débarrasse de ce type de composant. WARNING Le Béryllia Le Béryllia (oxyde de Béryllium) entre dans la composition de certains composants de cet appareil. Cette matière peut, lorsqu’elle est inhalée sous forme de vapeur ou de fine poussière, être la cause de maladies respiratoires. Sous sa forme solide, comme c’est le cas ici, cette matière peut être manipulée sans risque, bien qu’il soit conseillé d’éviter toute manipulation pouvant entraîner la formation de poussière par abrasion de la surface. Il est donc conseillé, pour éviter ce risque, de prendre les précautions requises pour retirer ces composants et s’en débarrasser. Ne les jetez pas avec les déchets industriels ou domestiques ou ne les envoyez pas par la poste. Il faut les emballer séparément et solidement et bien indiquer la nature du risque avant de les céder, avec précautions, à une entreprise spécialisée dans le traitement de déchets toxiques. WARNING Bronze au béryllium Dans cet équipement,certaines pièces mécaniques sont à base de bronze au béryllium. Il s'agit d'un alliage dans lequel le pourcentage de béryllium ne dépasse pas 5%. Il ne présente aucun danger en utilisation normale. Toutefois, cet alliage ne doit pas être travaillé, soudé ou soumis à un processus qui implique l'utilisation d'une source de chaleur. En cas de destruction, il sera entreposé dans un container spécial. IL ne devra pas être détruit par incinération. 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.

Aeroflex. Aeroflex n'a aucun contrôle sur l'usage de l'instrument, et ne pourra être tenu pour responsable en cas d'événement survenant suite à une utilisation différente de celle prévue.

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 Messgerät mit diesem Symbol markiert ist. Machen Sie sich mit der Art der Gefahr und den Aktionen die getroffen werden müssen bekannt. Warnung vor giftigen Substanzen Allgemeine Hinweise zur Verwendung Dieses Produkt wurde entsprechend den Anforderungen von IEC/EN61010-1 “Sicherheitsanforderungen für elektrische Ausrüstung für Meßaufgaben, Steuerung und Laborbedarf”, Klasse III, transportabel zur Verwendung in einer Grad 2 verunreinigten Umgebung, entwickelt und getestet. Dieses Gerät ist für Netzversorgung Klasse I zugelassen. Das Gerät sollte vor dem Eindringen von Flüssigkeiten sowie vor Regen, Schnee etc. geschützt werden. Bei Standortänderung von kalter in wärmere Umgebung sollte das Gerät wegen der Kondensation erst nach Anpassung an die wärmere Umgebung mit dem Netz verbunden werden. Das Gerät darf nur in Umgebungsbedingungen wie in Kapitel 1 "Leistungsdaten (Performance data)" der Bedienungsanleitung beschrieben, betrieben werden; ansonsten wird der vom Gerät vorgesehene Schutz des Anwenders beeinträchtigt. Dieses Produkt ist nicht für den Einsatz in gefährlicher Umgebung (z.B. Ex-Bereich) und für medizinische Anwendungen geprüft. Sollte das Gerät für den Einsatz in sicherheitsrelevanten Anwendungen wie z.B. im Flugverkehr oder bei militaerischen Anwendungen vorgesehen sein, so ist dieser von einer für diesen Bereich zuständigen Person zu beurteilen und genehmigen. WARNING Elektrische Schläge (Gleichspannungsversorgung) Dieses Gerät entspricht der IEC Sicherheitsklasse III. Aus Sicherheitsgründen darf es nur an Netzgeräte und Signalquellen angeschlossen werden, die in Spannung und Isolation der SELV und SELV-E Richtlinie genügen (“Getrennte Niederspannung”). Im Gerät werden keine gefährlichen Spannungen erzeugt. Im Handbuch, Kapitel 1, “Performance data” (Leistungsdaten), werden die anschließbaren Höchstspannungen definiert. Öffnen Sie niemals das Gehäuse der Geräte das dies zu ernsthaften Verletzungen führen kann. Es gibt keine vom Anwender austauschbare Teile in diesem Gerät.

Servicestellen finden Sie auf der Rückseite des Handbuches. WARNING Brandgefahr Der Zugriff auf die Netzsicherungen geschieht durch die Entfernung einer Abdeckung. Die Entfernung der Abdeckungen sollte nur von qualifiziertem Personal ausgeführt werden. Zum Schutz gegen Brandgefahr dürfen die Sicherungen nur gegen solche gleichen Typs und Wertes ausgetauscht werden. WARNING Warnung vor giftigen Substanzen In einigen Bauelementen dieses Geräts können Epoxyharze oder andere Materialien enthalten sein, die im Brandfall giftige Gase erzeugen. Bei der Entsorgung müssen deshalb entsprechende Vorsichtsmaßnahmen getroffen werden. WARNING Beryllium Oxid Beryllium Oxid wird in einigen Bauelementen verwendet. Als Staub inhaliert kann Beryllium zu Schädigungen der Atemwege führen. In fester Form kann es ohne Gefahr gehandhabt werden, wobei Staubabrieb vermieden werden sollte. Wegen dieser Gefahren dürfen diese Bauelemente nur mit der entsprechenden Vorsicht ausgebaut und entsorgt werden. Sie dürfen nicht mit Industrie oder Hausmüll vermengt oder per Post versandt werden. Sie müssen separat verpackt und entsprechend der Gefährdung markiert werden. Die Entsorgung muß über einen autorisierten Fachbetrieb erfolgen. WARNING Beryllium Kupfer In diesem Gerät sind einige mechanische Komponenten aus Beryllium Kupfer gefertigt. Dies ist eine Verbindung welche aus einem Berylliumanteil von ca. 5 % besteht. Bei normaler Verwendung besteht kein Gesundheitsrisiko. Das Metall darf nicht bearbeitet, geschweißt oder sonstiger Wärmebehandlung ausgesetzt werden. Es muß als Sondermüll entsorgt werden. Es darf nicht durch Verbrennung entsorgt werden. Eignung für Gebrauch 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. Aeroflex hat keinen Einfluß auf die Art der Verwendung und übernimmt keinerlei Verantwortung bei unsachgemässer Handhabung.

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 Fare riferimento al manuale operativo quando questo simbolo è riportato sullo strumento. Rendervi conto della natura del pericolo e delle precauzioni che dovrete prendere. Pericolo sostanze tossiche Condizioni generali d’uso Questo prodotto è stato progettato e collaudato per rispondere ai requisiti della direttiva IEC/EN61010-1 ‘Safety requirements for electrical equipment for measurement, control and laboratory use’ per apparati di classe III portatili e per l’uso in un ambiente inquinato di grado 2. L’apparato è stato progettato per essere alimentato da un alimentatore di categoria I. Lo strumento deve essere protetto dal possibile ingresso di liquidi quali, ad es., acqua, pioggia, neve, ecc. Qualora lo strumento venga portato da un ambiente freddo ad uno caldo, è importante lasciare che la temperatura all’interno dello strumento si stabilizzi prima di alimentarlo per evitare formazione di condense. Lo strumento deve essere utilizzato esclusivamente nelle condizioni ambientali descritte nel capitolo 1 ‘Performance data’ del manuale operativo, in caso contrario le protezioni previste nello strumento potrebbero risultare non sufficienti. Questo prodotto non è stato approvato per essere usato in ambienti pericolosi o applicazioni medicali. Se lo strumento deve essere usato per applicazioni particolari collegate alla sicurezza (per esempio applicazioni militari o avioniche), occorre che una persona o un istituto competente ne certifichi l'uso. WARNING Pericoli da elettricità (alimentazione a c.c.) Questo strumento rispetta le norme IEC, classe III, e quindi, per una completa sicurezza, deve essere collegato solo ad alimentatori e generatori di segnali che rispettano I requisiti di tensione ed isolamento SELV e SELV-E (Separated Extra-Low Voltage). Nessuna tensione pericolosa è generata al suo interno. Vedi capitolo 1 per quanto concerne I livelli massimi di tensione applicabili. Non rimuovete mai le coperture perché così potreste provocare danni a voi stessi. Non vi sono all’interno parti di interesse all’utilizzatore.

Centri di Assistenza in fondo al manuale. WARNING Pericolo d'incendio L'accesso ai fusibili dell'alimentazione avviene attraverso la rimozione di un coperchio esterno. La rimozione dei coperchi dovrebbe essere eseguita solo da personale qualificato. Per una protezione costante contro pericoli d'incendio, utilizzare esclusivamente fusibili del tipo e dalle caratteristiche elettriche prescritte. WARNING Pericolo sostanze tossiche Alcuni dei componenti usati in questo strumento possono contenere resine o altri materiali che, se bruciati, possono emettere fumi tossici. Prendere quindi le opportune precauzioni nell’uso di tali parti. WARNING Berillio Berillio (ossido di berillio) è utilizzato nella costruzione di alcuni componenti di quest’apparato. Questo materiale, se inalato sotto forma di polvere fine o vapore, può causare malattie respiratorie. Allo stato solido, come è usato qui, può essere maneggiato con sufficiente sicurezza anche se è prudente evitare condizioni che provochino la formazione di polveri tramite abrasioni superficiali. A cause di questi pericoli occorre essere molto prudenti nella rimozione e nella locazione di questi componenti. Questi non devono essere gettati tra i rifiuti domestici o industriali né. vanno spediti per posta. Essi devono essere impacchettati separatamente ed in modo sicuro e devono indicare chiaramente la natura del pericolo e quindi affidate a personale autorizzato. WARNING Rame berillio Alcuni componenti meccanici in questo strumento sono realizzati in rame berillio. Si tratta di una lega con contenuto di berillio di circa il 5%, che non presenta alcun rischio in usi normali. Questo materiale non deve essere lavorato, saldato o subire qualsiasi processo che coinvolge alte temperature. Deve essere eliminato come "rifiuto speciale". Non deve essere eliminato tramite "inceneritore".

per provare apparati di radio comunicazione. Se lo strumento non è utilizzato nel modo specificato da Aeroflex, le protezioni previste sullo strumento potrebbero risultare inefficaci. Aeroflex non può avere il controllo sull’uso di questo strumento e non può essere ritenuta responsabile per eventi risultanti da un uso diverso dallo scopo prefisso.

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 aparezca en el instrumento. Familiarícese con la naturaleza del riesgo y con las acciones que deban de tomarse Aviso de toxicidad Condiciones generales de uso Este producto ha sido diseñado y probado para cumplir los requerimientos de la normativa IEC/EN61010-1 “Requerimientos de la normativa para equipos eléctricos de medida, control y uso en laboratorio”, para equipos clase III portátiles y para uso en un ambiente con un grado de contaminación 2. El equipo ha sido diseñado para funcionar sobre una instalación de alimentación de categorías II. Debe protegerse el equipo de la entrada de líquidos y precipitaciones como nieve, lluvia, etc. Cuando se traslada el equipo de entorno frío a un entorno caliente, es importante aguardar la estabilización el equipo para evitar la condensación. Sólo debe utilizarse el aparato en las condiciones ambientales especificadas en el capítulo 1 “Especificaciones” o “Performance data” del Manual de Instrucciones/Manual de Operación/Funcionamiento, en caso contrario la propia protección del equipo puede resultar dañada. Este producto no ha sido aprobado para su utilización en entornos peligrosos o en aplicaciones médicas. Si se va a utilizar el equipo en una aplicación con implicaciones en cuanto a seguridad, como por ejemplo aplicaciones de aviónica o militares, es preciso que un experto competente en materia de seguridad apruebe su uso. WARNING Nivel peligroso de electricidad (tensión de alimentación DC) Este equipo cumple con la norma de seguridad IEC clase III, lo que significa que para total seguridad debe ser conectado a alimentaciones y fuentes de señal que cumplan los requerimientos de tensión y aislamiento “Tensión Separada Extra-Baja” (SELV y SELV-E). Ninguna tensión generada internamente implica riesgo para el operario. En el capítulo 1 “Especificaciones” podrá encontrar los valores máximos permitidos que pueden aplicarse.

No existen partes que puedan ser reparadas en su interior. Deje todas las tareas relativas a reparación a un servicio técnico cualificado. Vea la lista de Centros de Servicios Internacionales en la parte trasera del manual. WARNING Peligro de incendio El acceso a los fusibles de alimentación se lleva a cabo retirando la tapa exterior del equipo. La retirada de las tapas deberá efectuaría personal cualificado. Para asegurar protección continuada frente a incendios, los fusibles fundidos sólo deberán reemplazarse con aquellos del tipo y valores correctos. WARNING Aviso de toxicidad Alguno de los componentes utilizados en este equipo pudieran incluir resinas u otro tipo de materiales que al arder produjeran sustancias tóxicas. Por tanto, tome las debidas precauciones en la manipulación de esas piezas. WARNING Berilio Berilio (óxido de berilio) Este material es utilizado en la fabricación de alguno de los componentes de este equipo. La inhalación de este material, en forma de polvo fino o vapor, entrando en los pulmones, puede ser causa de enfermedades respiratorias. En forma sólida, como se utiliza en este caso, puede manipularse con bastante seguridad, aunque se recomienda no manejarlo en aquellas condiciones que pudieran favorecer la aparición de polvo por abrasión de la superficie. Por todo lo anterior, se recomienda tener el máximo cuidado al reemplazar o deshacerse de estos componentes, no tirándolos en basuras industriales o domésticas y no utilizar el correo para su envío. Deben, ser empaquetados de forma segura y separada, y el paquete debidamente etiquetado e identificado, señalando claramente la naturaleza del riesgo y ponerlo a disposición de un destructor autorizado de productos tóxicos. WARNING Berilio-cobre Algunos componentes mecánicos contenidos en este instrumento incorporan berilio-cobre en su proceso de fabricación. Se trata de una aleación con un contenido aproximado de berilio del 5%, lo que no representa ningún riesgo durante su uso normal. El material no debe ser manipulado, soldado, ni sometido a ningún proceso que implique la aplicación de calor. Para su eliminación debe tratarse como un "residuo especial". El material NO DEBE eliminarse mediante incineración.

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. Aeroflex no tiene control sobre el uso de este equipo y no puede, por tanto, exigirsele responsabilidades derivadas de una utilización distinta de aquellas para las que ha sido diseñado.

Main features............................................................................................................................... 1-1 Performance data ......................................................................................................................... 1-3 Versions, options and accessories................................................................................................ 1-6 Introduction The 3002 is a C size, message-based VXI signal generator covering the frequency range 9 kHz to 2.4 GHz. The RF output can be modulated in amplitude, frequency or phase using internal or external signal sources. Additionally pulse modulation may be applied externally. An internal AF source is capable of generating simultaneous two-tone modulation. The 3002 is 2 slots wide and conforms to revisions 1.3 and 1.4 of the VXI specification. Main features Frequency selection Carrier frequency resolution is 1 Hz across the band. A series of carrier frequencies can be stored in non-volatile memory for recall when required. Output RF output up to +25 dBm (uncalibrated above 1.2 GHz) can be set with a resolution of 0.1 dB over the entire range. Carrier output can be completely disabled. An electronic trip protects the generator output against reverse power of up to 50 W. This prevents damage to output circuits when RF or DC power is accidentally applied to the RF OUT connector. To facilitate testing of receiver squelch systems, an attenuator hold function allows control of the RF output without introducing RF level drop-outs from the step attenuator. The RF output level can be offset by up to ± 5.0 dB to compensate for cable or switching losses, or to standardize a group of instruments. The maximum RF output level can be set so as to protect sensitive devices connected to the RF OUTPUT socket. Spectral purity With an SSB phase noise performance of typically -121 dBc/Hz at 20 kHz offset from a 1 GHz carrier, this instrument can be used for both in-channel and adjacent channel receiver measurements. Harmonically related signals and non-harmonics are better than -25 dBc and -60 dBc respectively. Modulation Comprehensive amplitude, frequency and phase modulations are available. Pulse modulation can be applied to the carrier from an external pulse source. The instrument also accepts one or two logic level inputs to produce a 2-level or 4-level FSK modulated output. An internal modulation oscillator is provided, having a frequency range of 0.01 Hz to 20 kHz. The oscillator is capable of generating one or two modulation tones simultaneously in one modulation channel. An independent BNC input on the front panel allows external modulation signals to be combined with

pulse modulation can be used in combination with the other forms of modulation. The frequency modulation range provides a 1 dB bandwidth of typically 100 kHz and provides FM deviation up to a maximum of 100 kHz. AC or DC coupled FM can be selected. Phase modulation is also available with a 10 kHz bandwidth up to a maximum of 10 radians. Amplitude modulation with a 1 dB bandwidth of typically 30 kHz and with modulation depths of up to 99.9% is available with a resolution of 0.1%. Pulse modulation is available as standard with typical rise and fall times of less than 10 µs and 40 dB on/off ratio. The external input voltage required for 100% modulation is 1 V RMS (1.414 V peak). To accommodate other signal levels, Automatic Level Control (ALC) can be selected which provides correctly calibrated modulation for inputs between 0.75 and 1.25 V RMS. HI and LO indications are reported when the input level is outside the range of the ALC system. Incrementing All major parameters can be incremented or decremented in steps. If no step size is programmed for a parameter, the steps are preset to 1 kHz for carrier frequency, 1 kHz for modulation oscillator, 1 kHz for FM deviation, 1% for AM depth, 0.1 rad for ΦM and 1 dB for output level. Frequency sweep The sweep capability of the instrument allows comprehensive testing of systems. Sweeps may be logarithmic or linear. Four parameters are used to specify sweep: start, stop, step size and time per step, all of which can be programmed by the user. Sweep triggering can be programmed as single shot or continuous and can be initiated directly or on the detection of a trigger. The triggering signal may be from a back plane trigger, programmed or from a TTL/CMOS signal applied to the front panel TRIGGER INPUT. Memory The instrument provides both non-volatile and volatile memory for storing instrument settings. The non-volatile memory provides 100 instrument settings and 100 settings of carrier frequency only. The volatile memory (RAM) also provides 100 instrument settings. Any one of the non- volatile instrument settings can be selected as the power-up setting for the instrument. 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 using the VXI trigger facilities. Memory protection To prevent accidental change of the contents of the stored settings, individual memories or ranges of memories can be write-protected. Triggers Triggering the 3002 Signal Generator may be via the VXI TTL triggers (0 - 7), the trigger command, *TRG message or front panel input. Calibration data All alignment data is digitally derived. Realignment can be undertaken, without removing covers, by protected functions via the VXI interface.

2.4 GHz. The RF output can be amplitude, frequency, phase or pulse modulated. An internal programmable AF source is capable of generating simultaneous two-tone modulation. All functions can be controlled by an IEEE 488.2 message-based interface. CARRIER FREQUENCY Range 9 kHz to 2.4 GHz. Resolution 1 Hz. Accuracy Equal to the frequency standard accuracy. RF OUTPUT Range -137 dBm to +25 dBm (+19 dBm above 1.2 GHz). When AM is selected, the maximum RF output level decreases linearly with increasing AM depths to +19 dBm (+13 dBm above 1.2 GHz) at 99% depth. Resolution 0.1 dB Accuracy Attenuator hold Selection of attenuator hold provides for uncalibrated level reduction of at least 10 dB without the mechanical attenuator operating. VSWR For output levels less than -5 dBm output VSWR is less than 1.3:1 for carrier frequencies up to 1.2 GHz and less than 1.5:1 for carrier frequencies up to 2.4 GHz. Output impedance 50 Ω SMA female connector to MIL 390123D. Output protection Protected from a source of reverse power up to 50 W from 50 Ω or 25 W from a source VSWR of 5:1. Tripping of the reverse power protection circuit illuminates a front panel LED and raises an interrupt. The protection circuit can be reset remotely. SPECTRAL PURITY Harmonics Typically better than -30 dBc for levels up to +7 dBm, typically better than -25 dBc for levels 6 dB below the maximum specified output. Non-harmonics (offsets > 3 kHz) Better than -70 dBc for carrier frequencies up to 1 GHz, better than -64 dBc for carrier frequencies above 1 GHz, better than -60 dBc for carrier frequencies above 2 GHz. Residual FM (FM off) Less than 4.5 Hz RMS in a 300 Hz to 3.4 kHz bandwidth at a carrier frequency of 1 GHz. SSB phase noise Better than -124 dBc/Hz at 20 kHz offset from a 470 MHz carrier. Typically -121 dBc/Hz at 20 kHz offset from a 1 GHz carrier. ΦM on AM Typically 0.1 radians at 30% depth at 470 MHz. MODULATION Internal and external modulation can be simultaneously enabled to produce combined amplitude and frequency (or phase) modulation. Pulse modulation can be used in combination with the other forms of modulation. Accuracy over temperature range 17°C to 27°C 9 kHz to 1.2 GHz 1.2 GHz to 2.4 GHz >−127 dBm ±1.0 dB ±2.0 dB ±1.2 dB Temperature coeff. over temperature range 0°C to 55°C 9 kHz to 1.2 GHz 1.2 GHz to 2.4 GHz <±0.02 dB/°C <±0.04 dB/°C

Resolution 3 digits or 1 Hz. Accuracy ±5% at 1 kHz modulation rate. Bandwidth (1 dB) DC to 100 kHz (DC coupled), 10 Hz to 100 kHz (AC coupled), 20 Hz to 100 kHz (AC coupled with ALC). Group delay: Less than 5 µs to 100 kHz. Carrier frequency offset Less than 1% of the set frequency deviation when DC coupled. Distortion Less than 3% at 1 kHz rate for deviations up to 100 kHz. Typically <0.5% at 1 kHz rate for deviations up to 10 kHz. Modulation source Internal LF generator or external via front-panel BNC. FSK Modes 2 level or 4 level FSK. Note that 4 FSK is not available with Option 11 Fast Pulse fitted. Data source External data connected to TRIGGER INPUT connector (2 level) or TRIGGER INPUT and PULSE INPUT connectors (4 level). Frequency shift: Settable up to ±100 kHz. Accuracy As FM deviation accuracy. Timing jitter ±3.2 µs Filter 8th order Bessel, −3 dB at 20 kHz. PHASE MODULATION Deviation 0 to 10 radians. Resolution 3 digits or 0.01 radians. Accuracy at 1 kHz ±5% of indicated deviation excluding residual phase modulation. Bandwidth (3 dB) 100 Hz to 10 kHz. Distortion Less than 3% at 10 radians at 1 kHz modulation rate. Typically <0.5% for deviations up to 1 radian at 1 kHz. Modulation source Internal LF generator or external via front-panel BNC. AMPLITUDE MODULATION (for carrier frequencies <500 MHz, usable to 2 GHz) Range 0 to 99.9%. Resolution 0.1%. Accuracy ±5% of set depth at 1 kHz rate at +17°C to 27°C ambient temperature. Temperature coefficient <0.02% per °C. Bandwidth (1 dB) DC to 30 kHz (DC coupled), 10 Hz to 30 kHz (AC coupled), 20 Hz to 30 kHz (AC coupled with ALC). Distortion Less than 2.5% at 1 kHz rate for modulation depths up to 80%, Less than 1.5% at 1 kHz rate for modulation depths up to 30%. Modulation source Internal LF generator or external via front-panel BNC. PULSE MODULATION Carrier frequency range 32 MHz to 2.4 GHz, usable to 10 MHz. RF level range Maximum guaranteed output is reduced to +20 dBm, +14 dBm above 1.2 GHz. RF level accuracy When pulse modulation is enabled, adds ±0.5 dB to the RF level accuracy. Control TTL/CMOS compatible pulse input is on front-panel BNC connector with 10 kΩ input impedance. A logical ‘1’ (3.5 V to 5 V) turns the carrier on, a logical ‘0’ (0 V to 1 V) turns the carrier off. Maximum safe input is ±15 V. ON/OFF ratio Better than 45 dB below 1.2 GHz. Better than 40 dB above 1.2 GHz. Rise and fall time Less than 10 µs.

Frequency range 0.01 Hz to 20 kHz. Resolution 0.01 Hz for frequencies up to 100 Hz, 0.1 Hz for frequencies up to 1 kHz, 1 Hz for frequencies up to 20 kHz. Frequency accuracy As frequency standard. Distortion Less than 0.1% THD at 1 kHz. Waveforms Sine to 20 kHz, triangle or square wave to 3 kHz. Audio output The modulation oscillator signal is available on a front-panel BNC connector at a level of 2 V RMS EMF from a 600 Ω source impedance. EXTERNAL MODULATION INPUT A front panel BNC connector is provided for external modulation input. Input level 1 V RMS (1.414 V peak) sine wave for set deviation. Input impedance 100 kΩ nominal. Modulation ALC The external modulation input can be leveled by a peak leveling ALC system over the input voltage range of 0.75 V to 1.25 V RMS sine wave. High and low indications are reported as part of the instrument status when the input is outside the leveling range. SWEEP MODE A carrier frequency sweep mode is provided. The sweep is defined by setting the start, stop and frequency step size. The step time can be set from. A step or the complete sweep may be triggered by the trigger input on the front panel, VXI backplane trigger, message or VXI command. Sweep can be set to continuous. Control parameters Start/stop values of carrier frequency, size of step and time per step. Sweep time 50 ms to 10 s per step. Linear sweep Frequency step size of 1 Hz minimum. Logarithmic sweep Percentage increment of 0.01% to 50% in 0.01% steps. Sweep mode Single, continuous or external trigger. Trigger mode A trigger input is available on a front-panel BNC. A step or the complete sweep may be triggered by the front-panel input, VXI backplane trigger or VXI command. FREQUENCY STANDARD TCXO 10 MHz. Temperature stability Better than ±7 in 107 over the operating range 0 to 55°C. Aging rate Less than ±1 in 106 per year. External input Front-panel BNC connector accepts an input of 1 MHz or 10 MHz at 220 mV RMS to 1.8 V RMS into 1 kΩ. VXI-bus INTERFACE CAPABILITIES Complies with revisions 1.3 and 1.4 of the VXIbus specification for message-based instruments. Logical address Manual selection (1 - 254). Device type A16 D16 message-based servant, programmable interrupter. Protocol Word serial IEEE 488.2. Fast handshake not supported. Connectors P1, P2 (highest slot of a 2-slot allocation). TTLTRG Used to trigger sweep mode and step memory sequences. CLK10 Not used. Local bus Not used. ECLTRG Not used. Peak current & power consumption +24 V: +12 V: +5 V: -12 V: Total power: Ipm 1.2 A 1.0 A 2.0 A 0.6 A 60 W max. Idm 0.1 A 0.1 A 1.3 A 0.1 A Cooling (per slot) 2.4 litre/s at 1 mm H2O backpressure for 10°C maximum temperature rise. BITE (built-in test equipment) LEDs on module's front panel indicate POWER OK (green), SYSTEM FAIL (red) and RPP TRIP - Reverse Power Protection Tripped (red). RFI COMPATIBILITY Complies with VXIbus revision 1.3/1.4 specifications below 1 GHz.

Conforms with the limits specified in the following standards: IEC/EN61326-1 : 1997, RF Emission Class B, Immunity Table 1, Performance Criterion B SAFETY Conforms with the requirements of EEC Council Directive 73/23/EEC (as amended) and the product safety standard IEC/EN 61010-1 : 2001 + C1 : 2002 + C2 : 2003 for Class 3 portable equipment, for use in a Pollution Degree 2 environment. The instrument is designed to operate from an Installation Category 1 supply. RATED RANGE OF USE Full specification is met over the temperature range 0 to +55°C, humidity up to 93% at 40°C and elevation up to 3050 m (10,000 ft). CONDITIONS OF STORAGE AND TRANSPORT The instrument can be stored at temperatures from -40°C to +70°C, humidities up to 93% at 40°C, and elevations up to 4600 m (15,000 ft). CALIBRATION INTERVAL 2 years. DIMENSIONS AND WEIGHT Dimensions 2 slot, C size. Weight Less than 4 kg. Versions, options and accessories When ordering please quote the full ordering number information. Ordering numbers Versions 3002 9 kHz to 2.4 GHz Signal Generator. Option Option 11 Fast pulse modulator. Supplied accessories 46882/226 Operating manual (this manual). 59000/285 LabWindows/CVI driver. 59000/286 VXI Plug & Play soft front panel.

Certificate Ref. No.: DC230 (Date) (Signature) Aeroflex International Ltd. The undersigned, representing: Manufacturer: Address: Longacres House, Six Hills Way, Stevenage, Hertfordshire, UK SG1 2AN Herewith declares that the product: Equipment Description: Model No. Options: VXI 9 kHz to 2.4 GHz Signal Generator 3002 11 is in conformity with the following EC directive(s) (including all applicable amendments) Reference No. Title: 73/23/EEC Low Voltage Directive 89/336/EEC EMC Directive and that the standards and/or technical specifications referenced below have been applied: Safety: EMC: IEC/EN61010-1 : 2001 + C1 : 2002 + C2 : 2003 Qualifying Notes: Robert Trott — Director of Product Assurance (Place) Aeroflex Stevenage IEC/EN 61326-1:1997 + A1 : 1998 + A2 : 2001 RF Emission Class B, Immunity Table 1 and Performance Criterion B 23 December 2003

Contents Initial visual inspection................................................................................................................ 2-1 Setting logical address................................................................................................................. 2-1 Ventilation requirements.............................................................................................................. 2-1 Installing in VXI mainframe........................................................................................................ 2-2 Routine safety testing and inspection........................................................................................... 2-2 Cleaning....................................................................................................................................... 2-3 Putting into storage...................................................................................................................... 2-3 Front panel connectors and indicators ......................................................................................... 2-3 Switching on................................................................................................................................ 2-4 Disk installation/loading instructions........................................................................................... 2-4 List of figures Fig. 2-1 3002 front panel showing connectors and indicators .................................................... 2-3 WARNING ! Initial visual inspection After unpacking the equipment, inspect the shipping container and its cushioning material for signs of stress or damage. If damage is identified, retain the packing material for examination by the carrier in the event that a claim is made. Examine the equipment for signs of damage; do not connect the equipment to a supply when damage is present, internal electrical damage could result in shock if the equipment is turned on. Setting logical address Before installing the signal generator in the VXI mainframe, verify that the logical address is between 1 and 254 and does not clash with the logical address of any other device in the rack. The logical address is set on a bank of 8 DIL switches. These are located on the right-hand side of the instrument. Use some form of stylus (e.g. a ball-point pen) to move the switches to form the binary address. Logical addresses may be set in the range 1 to 254. Logical address 0 is reserved for slot 0 devices and logical address 255 is reserved for dynamically configured devices. The 3002 VXI Signal Generator does not support dynamic configuration. Ventilation requirements Ensure that the VXI signal generator module is supplied with adequate cooling i.e. 2.4 liter/s at 1 mm H2O backpressure minimum per slot.

2-2 Installing in VXI mainframe This instrument will take up two slots of a C-sized VXI mainframe. Before installation ensure that the mainframe power is off. To install the instrument first set the logical address (see ‘Setting logical address’ above), if required, then slide the module into the mainframe ensuring that the top and bottom card guides are in the slots. Ensure that the rear connectors are seated properly and screw in the front panel retaining screws. The instrument is now ready to power up. Routine safety testing and inspection 1. Visual 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. This module is not designed to be connected to a supply or signals which present hazardous levels, and no hazardous voltages are generated internally. All such levels must be maintained within 'Separated Extra-Low Voltage' (SELV or SELV-E) limits for continued safety. No requirement therefore exists to carry out insulation tests on the module. Periodic electrical tests and visual inspections should however be performed on the complete mainframe/chassis by competent personnel. Information should be sought from the mainframe supplier regarding the visual inspection, earth bonding and insulation resistance test requirements. Visually check that the module has been installed in accordance with the instructions provided (e.g. that the ventilation is adequate, all fixing screws are present and tightened, and that all warning labels, markings and supplied safety information are present and legible). If any defect is noted this should be rectified before proceeding with further electrical tests. No attempt should be made to perform high current earth bonding tests on the functional earths (e.g. signal carrying connector shells or screen connections) present on the module connectors. High current earth bonding tests are also not recommended between the mainframe protective earth connector and the module front panel. Serious damage may result to both the module and the mainframe if the module is not fully screwed into the mainframe during high current testing. Low current earth bonding tests (1 mA to 100 mA) should be performed to establish earth path continuity between the module front panel and the mainframe protective earth. 2. Rectification It is recommended that the results of the above tests are recorded and checked during each repeat test. Significant differences between the previous readings and measured values should be investigated. If any failure is detected during the above visual inspection or tests, the equipment should be disabled and the fault should be rectified by an experienced Service Engineer who is familiar with the hazards involved in carrying out such repairs. Safety critical components should only be replaced with equivalent parts, using techniques and procedures recommended by Aeroflex. 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. Never insert or remove the instrument when the mainframe is already powered up.

2-3 INSTALLATION Cleaning Before commencing any cleaning, switch off the instrument and disconnect the mainframe from the supply. The exterior surface of the case may be cleaned using a soft cloth moistened in water. Do not use aerosol or liquid solvent cleaners. Putting into storage If the instrument is to be put into storage, ensure that the following conditions are maintained: Temperature range: −40 to +70°C Humidity: Less than 93% at 40°C Front panel connectors and indicators The front panel with its connectors and indicators is shown in Fig. 2-1 below: Fig. 2-1 3002 front panel showing connectors and indicators

2-4 1 RF OUT 50 Ω SMA-type socket. Protected against the application of reverse power of up to 50 W. 2 SYSTEM FAIL This red LED lights to indicate that the signal generator has failed, or is in the process of executing its self-test. It indicates the condition of the VXI-bus SYSFAIL line. The LED will continue to be lit whilst the self-test is in progress even when SYSFAIL is inhibited by the commander. 3 POWER OK This green LED lights to indicate that power is being supplied to the signal generator. All lines are continuously checked for sufficient voltage. 4 RPP TRIP This red LED lights to indicate that the Reverse Power Protection (RPP) circuit has tripped. The power source must be removed from the RF OUT socket. 5 FREQ STD I/O BNC socket for the input of external standard frequencies of either 1 MHz or 10 MHz. Also supplies a 10 MHz internal standard output. 6 EXT MOD INPUT BNC socket which allows an external modulating signal to be applied. 7 TRIGGER INPUT BNC socket which has three uses; in priority order these are: FSK logic input Memory sequencing Sweep trigger. 8 PULSE INPUT 10 kΩ BNC socket which accepts a pulsed input. Also used as one logic input (the other is the TRIGGER INPUT) for 4FSK modulation. 9 LF OUTPUT 600 Ω BNC socket which monitors the modulation oscillator. Switching on Insert the signal generator module in the required slot in the mainframe and screw in the retaining screws. Switch the mainframe on. All three LEDs should initially light while the generator carries out its self checks. When the unit passes its self checks, and if there are no errors detected on the backplane, the red SYSTEM FAIL and RPP LEDs will go out within 5 seconds and the green POWER OK LED will remain on. Disk installation/loading instructions LabWindows/CVI Instrument Driver and VXI Plug and Play Soft Panel disks are supplied with this instrument. Before inserting a disk in your disk drive read the installation or loading instructions given on the label of the appropriate disk. Refer to 'read me' files for further information.

mnemonics. For example, if carrier frequency and RF level are to be set to 2.54 MHz and -27.3 dBm respectively, the VXI instruction message is: CFRQ:VALUE 2.54 MHZ RFLV:VALUE -27.3 DBM For full information on the IEEE protocols and syntax the IEEE 488.2 standard should be consulted. 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: Device talking elements The following is a list of the device talking elements (as defined in the IEEE 488.2 standard) which are used in the instrument:

whole message is ended by the Program Message Terminator (or End Of Message) defined as one of the following: (1) (ASCII 10 - often known as 'line feed') or (2) + END (the EOI line is asserted as well) or (3) + END (EOI is asserted in the last data byte of the message) A response message is always terminated by consisting of + END. A message unit consists of a mnemonic header which may be followed by data. If data follows, then it must be separated from its header by at least one space:

e.g. RFLV:INC 6.0 dB Spaces may be freely inserted in a message to improve readability, except within a header or within data. A header may be a command or a query. A query has a '?' as its final character and causes the generation of a response message which will be read by the controller. Common commands and queries (defined in IEEE 488.2) begin with a '*'. Upper and lower case characters are considered equivalent (i.e. FM fm Fm fM are all interpreted by the instrument in the same way). Compound headers The instrument implements compound headers which allows a complex set of commands to be built up from a small set of basic elements in a 'tree and branch' structure. The elements of a compound header are separated by a colon (:). Spaces are not allowed within a header. Special rules apply when more than one compound header is used in one message. When the separator ';' is encountered, all headers except the trailing element of the previous header in the message are assumed to precede the following header, for example: AM:DEPTH 30PCT;ON is equivalent to the two commands: AM:DEPTH 30PCT and AM:ON This does not apply to common commands (*RST etc.). The rule may be overridden by preceding a header with a colon, for example: AM:ON;:FM:ON Most main functions have a short form of header which may be used for clarity and brevity in simple messages, for example: CFRQ 1.25GHZ is the same as CFRQ:VALUE 1.25GHZ

Decimal Numeric Data is a flexible numeric format which encompasses integer, fixed point and floating point (mantissa and exponent) representations. Data is rounded to a resolution appropriate to the function. Decimal data can, in most cases, be followed by the appropriate units. If no units are present, the specified default units are assumed. Character Data is an alphanumeric word. String Data consists of a number of 7-bit ASCII characters enclosed in quotes, either a pair of single ('ASCII 39') or double ("ASCII 34") quotes may be used. Some commands can accept Multiple Data items which are separated by commas, for example MODE FM,AM. Message exchange protocol The controller should not attempt to read a response until it has sent the entire query message (terminated by EOM). Also, it should not start to send a new message until it has read the entire response (terminated by EOM). The query message may contain more than one query message unit, but only one response message (containing several response message units) is generated. Failure to follow the protocol will generate a query error: INTERRUPTED (error 450) occurs when the controller starts to send a new message before having read the response to a preceding query. UNTERMINATED (error 451) occurs when the controller attempts to read a response without having sent a query. DEADLOCK (error 452) can only occur if the input and output buffers are both filled by the controller having sent an extra long message containing several query message units. These instruments have an input buffer of 256 characters and an output buffer of 256 characters. Common commands and queries (IEEE 488.2) The IEEE 488.2 standard defines a set of common commands and queries which implement common system functions. Common command and query mnemonics are preceded by an asterisk (*) to distinguish them from device dependent data such as instrument programming strings. The following common commands and queries are implemented in the instrument: Mnemonic Name and Description *IDN? Identification Query. Returns an arbitrary ASCII response comprising four data fields in the format: ,,, where: is IFR , is the instrument model number, 3002. is the instrument serial number in the form nnnnnn/nnn, where n is an ASCII digit in the range 0 to 9. is in the form nnnnn/nnn/n.nn, where n is an ASCII digit in the range 0 to 9. Example: IFR,3002,811152/011,44533/445/01.00 *OPT? Option Identification Query. Returns an arbitrary ASCII response containing a data field for each fitted option in the format: ,, ... , If no options are fitted, ASCII '0' is returned. Because an Arbitrary ASCII Response ends with the Response Message Terminator () either *IDN? or *OPT? must be the last Query Message Unit in a Program Message.

state. *TST? Self Test Query. Returns a '0' when the VXI interface and processor are operating. *OPC Operation Complete Command. Sets the Operation Complete bit in the Standard Event Status Register when execution of the preceding operation is complete. *OPC? Operation Complete Query. Returns a '1' when the preceding operation has been completed. *WAI Wait to Continue Command. Inhibits execution of an overlapped command until the execution of the preceding operation has been completed. *TRG Trigger Command. Equivalent to Group Execute Trigger. *STB? Read Status Byte Query. Returns the value of the Status Byte as an nr1 number (0- 255). *SRE Service Request Enable Command. Sets the Service Request Enable Register. *SRE? Service Request Enable Query. Returns the value of the Service Request Enable Register as nr1. *ESR? Standard Event Status Register Query. Returns the value of the Status Event Status Register as nr1. *ESE Standard Event Status Enable Command. Sets the Standard Event Enable Register. *ESE? Standard Event Status Enable Query. Returns the value of the Standard Event Status Enable Register as nr1. *CLS Clear Status Command. Clears all the Status Event registers and clears the Error Queue. Does not affect the Enable Registers. The IEEE 488.2 Device Clear function only affects the remote functions. The input and output buffers are cleared and the instrument put into a state to accept new messages. Earlier versions of IEEE 488.1 put the instrument functions into a defined state, but this is now performed by the *RST common command. Device dependent commands The following list describes the features of the device dependent mnemonics for the instrument together with simple examples of their use within each major section (Carrier frequency, RF level, etc.) The root mnemonic is listed first followed by the lower level mnemonics. Each group is followed by a list of requirements for data type and suffix. In addition to the normal listen commands the instrument accepts query commands which cause it to prepare a message which will be sent to the controller when the instrument is next addressed to talk. For each query an example of a response is given. Where responses are similar for a group of queries not all are listed. Some queries can produce more than one type of response - an example of each is usually given. In the list which follows, the abbreviations , and have the following meanings: = Character Program Data = Decimal Numeric Program Data = String Program Data Where the data format is Decimal Numeric Program Data, the value may be expressed as a signed or unsigned number in any of the following formats: nr1: Decimal integer, e.g. 1234 or -567 nr2: Floating point number, e.g. 1.234 or -56.789 nr3: Floating point number with exponent, e.g. 1.2345E5 or -12.47E-8

(1) At power-up. (2) Following execution of the RCL 999 command. (3) Following execution of the *RST command. The default settings are shown in Table 3-1 . Table 3-1 Instrument default settings Carrier frequency : Step : 2.4 GHz 1 kHz RF level Step : Status: RF output : −137 dBm 1 dB ON Enabled Modulation mode Internal FM, modulation disabled Modulations : FM1 : Deviation: 0 Hz, OFF : Internal source, frequency: 1 kHz, sine FM2 : Deviation: 0 Hz, OFF : Internal source, frequency: 400 Hz, sine ΦM1 : Deviation: 0 rad, OFF : Internal source, frequency: 1 kHz, sine ΦM2 : Deviation: 0 rad, OFF : Internal source, frequency: 400 Hz, sine AM1 : Deviation: 0%, OFF : Internal source, frequency: 1 kHz, sine AM2 : Deviation: 0%, OFF : Internal source, frequency: 400 Hz, sine Pulse : OFF Modulation steps : ∆FM 1 kHz, ∆ΦM 0.1 rad, ∆AM 1% Mod frequency steps : 10 Hz Carrier sweep Freq mode: Mode : Type: Ext trigger : Start : Stop: Step size: Time: Fixed Single sweep Linear OFF 9 kHz 2.4 GHz 1 kHz 50 ms

resolution of 1 Hz. You can adjust the frequency in steps by setting the size of the step and then stepping the frequency up or down. After having adjusted the frequency you can either return to the reference frequency or make the current frequency the reference frequency. Additionally, you can adjust the phase offset of the carrier in degrees in the range -359.99° to +359.99°. Also you can configure the instrument as a swept frequency signal generator where you define the start and stop frequencies and set the step size, step time and step direction. For triggering methods, refer to 'Trigger source' at the end of this section. CFRQ Set Carrier Frequency (short form) :VALUE Set Carrier Frequency :INC Set Carrier Frequency step size Data type : Decimal Numeric Program Data Allowed suffices : Any one of: GHZ, MHZ, KHZ or HZ Default suffix : HZ :UP Go UP one step :DN Go DOWN one step :RETN Return to original setting :XFER Transfer current value to be the new setting Data type : None Allowed suffices : None Default suffix : None :MODE Selects the mode of carrier frequency operation. SWEPT enables swept carrier frequency operation, while FIXED disables it Data type : Character Program Data (FIXED - non swept mode, SWEPT - swept mode) Allowed suffices : None Default suffix : None :START Set Start Frequency for use in sweep :STOP Set Stop Frequency for use in sweep Data type : Decimal Numeric Program Data Allowed suffices : Any one of: GHZ, MHZ, KHZ or HZ Default suffix : HZ :TIME Set time per sweep step Data type : Decimal Numeric Program Data Allowed suffices : MS or S Default suffix : MS :PHASE Adjust Phase Offset of Carrier in degrees Data type : Decimal Numeric Program Data Allowed suffices : DEG Default suffix : DEG Examples: CFRQ:VALUE 2.54MHZ;INC 10KHZ CFRQ:UP;XFER CFRQ:START 1MHZ;STOP 10MHZ;TIME 100MS CFRQ:MODE SWEPT CFRQ? Prepares message containing information on Carrier Frequency setting in the following format: :CFRQ:VALUE ; INC ;MODE where: is character program data indicating whether carrier frequency operation is swept or fixed Example: :CFRQ:VALUE 1000000000.0;INC 25000.0;MODE FIXED

0.1 dB. You can adjust the level in steps by setting the size of the step and then stepping the level up or down. And after having adjusted the level you can either return to the reference level or make the current level the reference level. You can set the units to a default if required. For voltage related units, you can select either EMF or PD. You can also switch the output at the RF OUT socket off or on. For attenuator hold see under 'Miscellaneous commands' below. You can also set your own maximum output power limit which allows you to protect sensitive devices connected to the RF OUT socket. The maximum calibrated output level is +25.1 dBm up to 1.2 GHz and +19 dBm above this frequency. Above 1.2 GHz an uncalibrated level up to +25.1 dBm is allowed. The setting will be saved in non-volatile memory so that when subsequently the instrument is switched on again it will be set with your specified RF level limit. The RF offset function 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. One offset is allowed in each of the following ranges: 9 kHz - 150 MHz 150 MHz - 300 MHz 300 MHz - 600 MHz 600 MHz - 1.2 GHz 1.2 GHz - 2.4 GHz The entered carrier frequency automatically selects the appropriate frequency range over which the offset is applied. Set the required positive or negative RF offset in the range 0 to 5.0 dB to a resolution of 0.1 dB. For each required additional range enter the carrier frequency then the offset. Ensure that your offsets are saved so that when subsequently the instrument is switched on again it will be set with your specified offsets. RFLV Set RF Output Level (short form) :VALUE Set RF Output Level 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 :INC Set RF Level step (dB) Data type : Decimal Numeric Program Data Allowed suffices : DB only Default suffix : DB :UP Go UP one step :DN Go DOWN one step :RETN Return to original setting :XFER Transfer current value to be the new setting :ON Turn RF Output ON :OFF Turn RF Output OFF Data type : None Allowed suffices : None Default suffix : None :TYPE Selects EMF or PD for voltage related units Data type : Character Program Data (EMF or PD) Allowed suffices : None Default suffix : None

Data type : Character Program Data (DBM, DBV, DBMV, DBUV, V, MV or UV) Allowed suffices : None Default suffix : None Examples: RFLV:VALUE -27.3DBM;ON RFLV:TYPE PD;VALUE 1.23UV :LIMIT Set RF Level max limit (short form) :VALUE Set RF Level max limit 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 :ENABLE Enable limit :DISABLE Disable limit :OFFS Set RF Level offset for given frequency band (short form) :VALUE Set RF Level offset for given frequency band Data type : Decimal Numeric Program Data Allowed suffices : DB only Default suffix : DB :ENABLE Enable offsets :DISABLE Disable offsets :SAVE Save offsets in non-volatile memory RFLV? Prepares message containing information on RF Level setting in the following format: :RFLV:UNITS ;TYPE ;VALUE ;INC ; where: is character program data defining the default RF level units (DBM, DBV, DBMV, DBUV, V, MV or UV), is character program data indicating EMF or PD and is a program mnemonic indicating whether the RF output is ON or OFF Examples: :RFLV:UNITS DBM;TYPE PD;VALUE -103.5;INC 2.0;ON :RFLV:UNITS DBV;TYPE EMF;VALUE -83.2;INC 0.5;ON RFLV:LIMIT? Prepares message containing information on RF Level max limit setting in the following format: :RFLV:LIMIT:VALUE;; Examples: :RFLV:LIMIT:VALUE-20.0;ENABLE RFLV:OFFS? Prepares message containing information on RF Level offset in the following format: :RFLV:OFFS:VALUE;; Examples: :RFLV:OFFS:VALUE-3.2;ENABLE

OUTPUT [not used alone] :DISABLE Allows user to download and store settings in the normal way without the output of the instrument changing until the OUTPUT:ENABLE command is received. :ENABLE Enables the instrument outputs such that the outputs will adjust to the values specified by commands sent while the outputs were disabled. Note: It is up to the user to ensure that the last command sent, prior to OUTPUT:ENABLE, is such that the RF output is set to a safe level. Data type : None Allowed suffices : None Default suffix : None Examples: OUTPUT:DISABLE CFRQ 300MHZ; RFLV 10DBM; MODE AM; AM 40PCT; AM:ON; MOD:ON; STO 200 CFRQ 400MHZ; RFLV 7DBM; STO 201 CFRQ 500MHZ; RFLV 5DBM; STO 202 CFRQ 600MHZ; RFLV 4DBM; STO 203 OUTPUT;ENABLE RCL 200 RCL 201 RCL 202 RCL 203 OUTPUT? Prepares message containing information on output control setting in the following format: : OUTPUT: where: is a program mnemonic indicating whether the output control is ENABLED or DISABLED Examples: :OUTPUT:ENABLE :OUTPUT:DISABLE

phase modulation as well as binary (2-level) and quadrature (4-level) frequency shift keying. Binary FSK results from a logic level digital signal applied to the TRIGGER INPUT socket. Quadrature FSK is achieved using both the TRIGGER INPUT and PULSE INPUT sockets. Also pulse modulation may be selected from a signal connected to the PULSE INPUT socket. These modulations may be used in the combinations shown in the table below. Additionally, an external signal applied to the EXT MOD INPUT socket can be combined with any selected modulation combination. 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] PM [,PULSE] AM,FM [,PULSE] AM,PM [,PULSE] FSK2L [,PULSE] FSK4L Note... Order is not important, for example AM,FM is equivalent to FM,AM. PULSE modulation can be used with any of the AM,FM,PM and FSK2L modes, but not with FSK4L. FSK2L and FSK4L parameters are controlled using the FM commands. The frequency shifts produced by the applied data are as follows: 2FSK 4FSK TRIGGER SHIFT TRIGGER PULSE SHIFT 1 +D 1 0 +D 0 −D 1 1 +D/3 0 1 −D/3 0 0 −D Where D is the set deviation value. MODE? Prepares message containing information on Modulation Mode in the following format: :MODE where: is character program data indicating the modulation mode settings Example: :MODE AM,FM

MOD [not used alone] :ON Turn modulation globally ON :OFF Turn modulation globally OFF Examples: MOD:ON MOD:OFF MOD? Prepares message containing information on Modulation Control in the following format: :MOD: where: is a program mnemonic indicating whether the Modulation is globally ON or OFF Example: :MOD:ON

These commands enable you to select frequency modulation either as a single modulation or as the sum of two signals, to set the deviation rate, to switch the modulation on and off and to perform DC FM nulling. (For the latter, ensure that a ground reference is connected to the EXT MOD INPUT socket before you implement the command.) You can set the modulation oscillator frequency and select between sine, triangle and square waveforms. Also the phase difference of modulation oscillator channel 2 relative to channel 1 can be offset in degrees. Both deviation rate and modulation oscillator frequency can have their step sizes set and then be stepped up or down. And after having adjusted the deviation rate or the modulation oscillator frequency you can either return to the reference (rate or frequency) or make the current value the new reference. 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 : HZ : Select modulation source where is any one of: INT, EXTAC, EXTALC, or EXTDC :ON Turn FM ON (locally) :OFF Turn FM OFF (locally) :UP Go UP one step :DN Go DOWN one step :RETN Return to original setting :XFER Transfer current value to be the new setting Data type : None Allowed suffices : None Default suffix : None Examples: FM:DEVN 25KHZ;INT;ON FM1:DEVN 15KHZ;INC 1KHZ;EXTDC :MODF Set FM modulation oscillator frequency (short form) :VALUE Set FM modulation oscillator frequency :INC Set FM modulation oscillator frequency step size Data type : Allowed suffices : Default suffix : Decimal Numeric Program Data Any one of: GHZ, MHZ, KHZ or HZ HZ :UP Go UP one step :DN Go DOWN one step :RETN Return to original setting :XFER Transfer current value to be the new setting :SIN Select sinusoidal waveform :TRI Select triangle waveform :SQR Select square waveform Data type : None Allowed suffices : None Default suffix : None

Data type : Decimal Numeric Program Data Allowed suffices : DEG Default suffix : DEG Examples: FM2:MODF:VALUE 1.5KHZ;SIN FM:MODF:PHASE 1.2DEG DCFMNL Perform DC FM null operation (only for EXTDC mode) 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 ;;;INC :FM1:DEVN ;;;INC :FM2:DEVN ;;;INC where: is a program mnemonic representing the source of the modulation signal and is a program mnemonic indicating whether the frequency modulation is locally ON or OFF Example: :FM1:DEVN 25000.0;INT;ON;INC 1000.0 FM:MODF? or FM1:MODF? or FM2:MODF? Prepares message containing information on FM modulation oscillator setting in one of the following formats: :FM:MODF:VALUE ;;INC :FM1:MODF:VALUE ;;INC :FM2:MODF:VALUE ;;INC where: is a program mnemonic representing the waveform shape Example: :FM1:MODF:VALUE 5750.00;SIN;INC 1000.00

of two signals, to set the deviation rate in radians, and to switch the modulation on and off. You can set the modulation oscillator frequency and select between sine, triangle and square waveforms. Also the phase difference of modulation oscillator channel 2 relative to channel 1 can be offset in degrees. Both deviation rate and modulation oscillator frequency can have their step sizes set and then be stepped up or down. And after having adjusted the deviation rate or the modulation oscillator frequency you can either return to the reference (rate or frequency) or make the current value the new reference. PM or PM1 or PM2 Set Phase Modulation Deviation (short form) :DEVN Set Phase Modulation Deviation :INC Set Phase Modulation step size Data type : Decimal Numeric Program Data Allowed suffix : RAD : Select modulation source where is any one of: INT, EXTAC, EXTALC, or EXTDC :ON Turn PM ON (locally) :OFF Turn PM OFF (locally) :UP Go UP one step :DN Go DOWN one step :RETN Return to original setting :XFER Transfer current value to be the new setting Data type : None Allowed suffices : None Default suffix : None Examples: PM:DEVN 2.38RAD;INT;ON PM1:DEVN 1.5RAD;INC 0.1RAD;EXTAC :MODF Set PM modulation oscillator frequency (short form) :VALUE Set PM modulation oscillator frequency :INC Set PM modulation oscillator frequency step size Data type : Decimal Numeric Program Data Allowed suffices : Any one of: GHZ, MHZ, KHZ or HZ Default suffix : HZ :UP Go UP one step :DN Go DOWN one step :RETN Return to original setting :XFER Transfer current value to be the new setting :SIN Select sinusoidal waveform :TRI Select triangle waveform :SQR Select square waveform Data type : None Allowed suffices : None Default suffix : None :PHASE Set phase offset of PM2 relative to PM1 Examples: PM1:MODF:VALUE 10.5KHZ;SQR PM2:MODF:PHASE 2.0DEG

Prepares message containing information on Phase Modulation setting in one of the following formats: :PM:DEVN ;;;INC :PM1:DEVN ;;;INC :PM2:DEVN ;;;INC where is a program mnemonic representing the source of the modulation signal and is a program mnemonic indicating whether the phase modulation is locally ON or OFF Example: :PM2:DEVN 2.30;INT;OFF;INC 0.05 PM:MODF? or PM1:MODF? or PM2:MODF? Prepares message containing information on PM modulation oscillator setting in one of the following formats: :PM:MODF:VALUE ;;INC :PM1:MODF:VALUE ;;INC :PM2:MODF:VALUE ;;INC where: is a program mnemonic representing the waveform shape. Example: :PM2:MODF:VALUE 2500.00;TRI;INC 500.00

sum of two signals, to set the AM depth as a percentage, and to switch the modulation on and off. You can set the modulation oscillator frequency and select between sine, triangle and square waveforms. Also the phase difference of modulation oscillator channel 2 relative to channel 1 can be offset in degrees to a resolution of 0.1°. Both modulation depth and modulation oscillator frequency can have their step sizes set and then be stepped up or down. And after having adjusted the modulation depth or the modulation oscillator frequency you can either return to the reference (depth or frequency) or make the current value the new reference. AM or AM1 or AM2 Set AM Depth (short form) :DEPTH Set AM Depth :INC Set AM step size Data type : Decimal Numeric Program Data Allowed suffices : PCT Default suffix : PCT : Select modulation source where is any one of: INT, EXTAC, EXTALC, or EXTDC :ON Turn AM ON (locally) :OFF Turn AM OFF (locally) :UP Go UP one step :DN Go DOWN one step :RETN Return to original setting :XFER Transfer current value to be the new setting Data type : None Allowed suffices : None Default suffix : None Examples: AM:DEPTH 30.5PCT;EXTAC;ON AM1:DEPTH 40PCT;INT;OFF :MODF Set AM modulation oscillator frequency (short form) :VALUE Set AM modulation oscillator frequency :INC Set AM modulation oscillator frequency step size Data type : Decimal Numeric Program Data Allowed suffices : Any one of: GHZ, MHZ, KHZ or HZ Default suffix : HZ :UP Go UP one step :DN Go DOWN one step :RETN Return to original setting :XFER Transfer current value to be the new setting :SIN Select sinusoidal waveform :TRI Select triangle waveform :SQR Select square waveform Data type : None Allowed suffices : None Default suffix : None :PHASE Set phase offset of AM2 relative to AM1 Examples: AM2:MODF:VALUE 15.5KHZ;TRI;INC 500HZ AM:MODF:PHASE 5DEG

Prepares message containing information on Amplitude Modulation setting in one of the following formats: :AM:DEPTH ;;;INC :AM1:DEPTH ;;;INC :AM2:DEPTH ;;;INC where is a program mnemonic representing the source of the modulation signal and is a program mnemonic indicating whether the amplitude modulation is locally ON or OFF Example: :AM1:DEPTH 56.6;INT;ON;INC 5.0 AM:MODF? or AM1:MODF? or AM2:MODF? Prepares message containing information on AM modulation oscillator setting in one of the following formats: :AM:MODF:VALUE ;;INC :AM1:MODF:VALUE ;;INC :AM2:MODF:VALUE ;;INC where: is a program mnemonic representing the waveform shape Example: :AM:MODF:VALUE 5000.00;TRI;INC 1000.00

modulation mode. When ON is selected the carrier is modulated by the logic level applied to the PULSE INPUT socket. Pulse ON Logic level between 3.5 and 5 V Pulse OFF Logic level between 0 and 1.0 V Note: the :PULSE:ON and :PULSE:OFF commands are invalid when used with Option 11 (fast pulse). :PULSE? always returns :PULSE:ON when used with Option 11. PULSE [not used alone] :ON Turn Pulse modulation ON :OFF Turn Pulse modulation OFF Data type : None Allowed suffices : None Default suffix : None Examples: PULSE:ON PULSE:OFF PULSE? Prepares message containing information on Pulse Modulation setting in the following format: :PULSE: where: is a program mnemonic indicating whether the pulse modulation is ON or OFF Examples: :PULSE:ON :PULSE:OFF Examples: :PULSE:ON :PULSE:OFF To enable pulse modulation: Select any modulation mode together with pulse: for example, :MODE AM,PULSE. Turn pulse modulation on — :PULSE:ON (this command is valid for instruments that do not contain Option 11). Turn the AM off by sending :AM:OFF. This disables the AM but leaves pulse modulation enabled. To disable pulse modulation: Turn pulse modulation off — :PULSE:OFF (this command is valid for instruments that do not contain Option 11) or set a new modulation mode without pulse (for example, :MODE:AM). This command is valid for all instruments.

carrier frequency only. This store can be used to apply a set of test conditions to a range of frequencies. For example, if you wish to use the same modulation at a variety of frequencies you can use the carrier store to set the instrument to each of the frequencies in turn. When a carrier store is recalled it will only replace the current carrier frequency - all the other settings will remain unchanged. Full store The non-volatile full store has 100 locations numbered 100 to 199 for the storage of instrument settings. This store is used to store those parameters which currently affect the RF output; carrier frequency, RF level, modulations in use, on/off and source information and the two modulation oscillator frequencies in use. A full store contains the following information: Carrier frequency setting Carrier frequency step size RF level setting RF level step size All modulation settings All modulation step sizes Modulation mode and status The active modulation frequencies The modulation frequency step size All sweep settings RAM store The volatile RAM store has 100 locations numbered from 200 to 299 for the full storage of instrument settings. The parameters stored are the same as those for the full store. However, the RAM store has no long term wear-out mechanism and is therefore recommended for use in ATE programs where all the settings to be used in a test sequence are initially declared and then recalled. This results in a reduction of the 488.2 message overhead. Memory - store STO 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

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. These can be recalled and used in conjunction with full recall to apply a set of test conditions to a range of frequencies. Full recall The non-volatile full store has 100 locations numbered 100 to 199 for the storage of instrument settings. These stores may be recalled and used to reset the instrument's parameters to those which affect the RF output: carrier frequency, RF level, modulations in use, on/off and source information and the two modulation oscillator frequencies in use. RAM recall The volatile RAM store has locations numbered 200 to 299 for the full storage of instrument settings. The parameters that are recalled are the same as those for full recall. Recalling default settings For a list of the default settings see Table 3-1. Memory-recall To recall the factory default settings, press the RCL 999. RCL Recall Store 0-299 (short form) :MEM Recall Store 0-299 :CFRQ Recall Carrier Freq Store 0-99 :FULL Recall Full Store 100-199 :RAM Recall RAM Store 200-299 Data type : Decimal Numeric Program Data Allowed suffices : None Default suffix : None :UP Step up through stores. Use this command for memory sequencing :DN Step down through stores. Use this command for memory sequencing Data type : None Allowed suffices : None Default suffix : None Examples: RCL:FULL 125 RCL:UP RCL? Prepares message containing information on last memory store that was recalled in the following format: :RCL:MEM Examples: :RCL:MEM 126

ERASE [not used alone] :CFRQ Erase all Carrier Freq Stores (0-99) :FULL Erase all Full Stores (100-199) :RAM Erase all RAM Stores (200-299) :ALL Erase all Stores (0-299) Data type : None Allowed suffices : None Default suffix : None Examples: ERASE:FULL ERASE:ALL Memory - sequencing These commands enable you to step through the memory stores in a sequence. For triggering, refer to 'Memory-triggering' below. 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. Data type : Character Program Data Allowed suffices : None Default suffix : None Examples: MSEQ:MODE OFF MSEQ:MODE SEQ2 :SEQ1...:SEQ9 :START Set the memory store for the start of the sequencing loop :STOP Set the memory store for the end of the sequencing loop Data type : Decimal Numeric Program Data Allowed suffices : None Default suffix : None Example: MSEQ:SEQ2:START 50;STOP 70 MSEQ? Prepares message containing information on the current memory sequencing mode in the following format: :MSEQ:MODE where: is character program data indicating the sequence mode selection Examples: :MSEQ:MODE SEQ4 :MSEQ:MODE OFF MSEQ:SEQ1? ..... MSEQ:SEQ9? Prepares message containing information on the start and stop settings of the given memory sequence in the following format: :MSEQ:SEQn:START ;STOP where n is between 1 and 9 inclusive Example: :MSEQ:SEQ4:START 120;STOP 155

For external triggering methods, refer to 'Trigger source' at the end of this section. MTRIG :ON Enables memory recall triggering to be activated by *TRG command or by external triggering :OFF Disable memory recall triggering Data type : None Allowed suffices : None Default suffix : None Examples: MTRIG:ON MTRIG:OFF MTRIG? Prepares message containing information on memory triggering state in the following format: :MTRIG: where: is a program mnemonic indicating whether the memory recall triggering is enabled (:ON) or disabled (:OFF) Example: :MTRIG:ON Memory - protection These commands enable you to either write protect a block of stores (or a single store) to prevent accidental overwriting or to unprotect it. For a single store set both start and stop numbers the same. Note that any protection applied to RAM will be lost once the instrument has been switched off. MPROT [not used alone] :START Set the start of the memory block which is to be protected/unprotected :STOP Set the end of the memory block which is to be protected/unprotected Data type : Decimal Numeric Program Data Allowed suffices : None Default suffix : None :ON Set memory protection ON for the selected memory block :OFF Set memory protection OFF (i.e. unprotected) for the selected memory block Data type : None Allowed suffices : None Default suffix : None Examples: MPROT:START 100;STOP 150 MPROT:ON

you define the start and stop frequencies, the step size and time per step. (Note that these commands also appear under 'Carrier frequency'.) To make these commands operational they must first be enabled by the CFRQ:MODE SWEPT command. For triggering methods, refer to 'Trigger source' at the end of this section. Sweeps may be linear or logarithmic. For linear sweeps set the step size in the range 1 Hz to the instrument maximum frequency to a resolution of 1 Hz. For logarithmic sweeps set the step size in the range of 0.01% to 50.00% to a resolution of 0.01%. 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 : Any one of: GHZ, MHZ, KHZ or HZ Default suffix : HZ :LOGINC PCT :TIME Select time per sweep step Data type : Decimal Numeric Program Data Allowed suffices : MS, S Default suffix : MS Example: SWEEP:CFRQ:START 100KHZ;STOP 500KHZ;INC 100HZ;TIME 60MS SWEEP:CFRQ? Prepares message containing information on Carrier Frequency Sweep settings in the following format: :SWEEP:CFRQ:START ;STOP ;INC ;LOGINC ;TIME Example: :SWEEP:CFRQ:START 1230000.0;STOP 1330000.0;INC 100.0;LOGINC 50.00;TIME 20.0

command. These commands enable you to select the sweep mode between single shot and continuous sweep and between linear and logarithmic sweep. You can also select the triggering mode from the following: OFF Disable the trigger. START The first trigger input causes the carrier sweep to commence sweeping. Any other trigger inputs whilst sweeping are ignored. Only at the end of each sweep is the trigger latch reset ready for the next input. STARTSTOP The first trigger input starts the carrier sweep and the following trigger input pauses it, so that the user can investigate a particular point of interest. The next trigger input continues the sweep from where it was paused. At the start of each sweep the trigger latch is reset ready for the next input. STEP Each trigger input steps the sweep on by one frequency step. The trigger latch is reset after each step ready for the next step. SWEEP [not used alone] :MODE Select Mode of operation for Sweep generator (single or continuous) Data type : Character Program Data (either SNGL or CONT) Allowed suffices : None Default suffix : None Example: SWEEP:MODE SNGL :TYPE Select type of sweep (linear or logarithmic) Data type : Character Program Data (LIN or LOG) Allowed suffices : None Default suffix : None Example: SWEEP:TYPE LOG :TRIG Data type : Character Program Data (any one of OFF, START, STARTSTOP, STEP) Allowed suffices : None Default suffix : None Example: SWEEP:TRIG STARTSTOP SWEEP? Prepares message containing information on Sweep Mode type and trigger in the following format: :SWEEP:MODE ;TYPE;TRIG where: is character program data indicating the sweep mode selected, is character program data indicating type selected, and is character program data indicating the trigger type selected Example: :SWEEP:MODE CONT;TYPE LOG;TRIG STEP

command. These commands enable you to start the sweep in the selected increments from the chosen reference frequency, pause the sweep, step the sweep up or down from the paused position, and continue the sweep. At any time when the sweep is stopped you can either return to the reference frequency or transfer the current frequency as the new reference frequency. SWEEP [not used alone] :GO Commence Sweep :HALT Pause Sweep :CONT Continue Sweep :RESET Reset sweep to Start Value :RETN Return to original setting :XFER Transfer current value as the new setting :UP Go UP one sweep step while paused :DN Go DOWN one sweep step while paused Data type : None Allowed suffices : None Default suffix : None Examples: SWEEP:GO SWEEP:RESET

VXI backplane triggers or to select an external trigger. For external triggering, connect a TTL trigger signal to the TRIGGER INPUT connector. Ensure however, that this socket is not disabled for your application by a higher priority mode having been selected. The order of priority is as follows: FSK logic input Memory sequencing Sweep trigger All three modes of operation may be enabled at the same time, but only one mode will be active, the one with the highest priority. Therefore ensure that, for example, FSK and memory sequencing are not enabled when selecting sweep triggering otherwise the triggering will have no effect. Trigger source selection is as follows: TRIGGER :SOURCE Select trigger source. Data type : Character Program Data (HOLD, IMMEDIATE, TTLTRG0, TTLTRG1, TTLTRG2, TTLTRG3, TTLTRG4, TTLTRG5, TTLTRG6, TTLTRG7, BUS, EXTERNAL). HOLD means no trigger. Allowed suffices : None Default suffix : None Example: TRIGGER:SOURCE EXTERNAL TRIGGER:SOURCE? Prepares message containing information on Trigger Source setting in the following format: :TRIGGER:SOURCE where is character program data defining the trigger source. Examples: :TRIGGER:SOURCE EXTERNAL :TRIGGER:SOURCE TTLTRG3 Sources BUS: The trigger is generated over the GPIB or VXI interface. The group execute trigger (GET) provides the trigger over IEEE 488.1 HOLD: Selecting this means the event detection is disabled. IMMEDIATE: No waiting for an event to occur. TTLTRG 0-7: The VXI backplane TTLTRG triggers provide the source. EXTERNAL: An external trigger is provided via the TRIGGER INPUT socket.

the step attenuator operating. ATTEN [not used alone] :LOCK Lock the Attenuators :UNLOCK Unlock the Attenuators Data type : None Allowed suffices : None Default suffix : None Example: ATTEN:LOCK ATTEN? Prepares message containing information on whether the Attenuators are locked or unlocked in the following format: :ATTEN: where is a program mnemonic indicating whether the attenuators are locked or unlocked. Example: :ATTEN:LOCK Table 3-2 below applies to software versions 1.03 onwards. Maximum level with attenuator lock on will reduce if AM or pulse modulation is applied. Any user programmed limits for RF level or offsets will also affect the attenuator lock ranges. Table 3-2 Attenuator lock ranges RF level setting (dBm) Atten. lock (min. dBm) Atten. lock (max. dBm) from to +26.0 +18.0 +7 +25 +17.9 +7.1 −4 +24 +7.0 +7.0 −4 +13 +6.9 -4.0 −15 +13 −4.1 −15.0 −26 +2 −15.1 −26.0 −37 −9 −26.1 −37.0 −48 −20 −37.1 −48.0 −59 −31 −48.1 −59.0 −70 −42 −59.1 −70.0 −81 −53 −70.1 −81.0 −82 −54 −81.1 −92.0 −103 −75 −92.1 −103.0 −114 −86 −103.1 −114.0 −125 −97 −114.1 −125.0 −136 −108 −125.1 −136.0 −137 −119 −136.1 −137.0 −137 −130

3-1) or with the settings of your choice stored in one of the full memory locations (range 100 to 199) or carrier frequency memory locations (range 0 to 99). POWUP [not used alone] :MODE Select the power up mode. The instrument can power up in either the factory preset mode or from a selected memory Data type : Character program data (FACTORY or MEMORY) Allowed suffices : None Default suffix : None :MEM Set the memory location for a memory power up Data type : Decimal Numeric Program Data Allowed suffices : None Default suffix : None Example: POWUP:MODE MEMORY POWUP:MEM 172 POWUP? Prepares message containing information on the instrument power up selection in the following format: Example: :POWUP:MODE MEMORY;MEM 135 Reverse power protection Accidental application of power to the RF OUT socket trips the reverse power protection circuit. The following commands enable you to detect when the protection circuit has been tripped, reset the protection (after you have removed the source from the socket), and find out how many times the circuit has tripped. RPP Reset reverse power protection trip (short form) :RESET Reset RPP trip Data type : None Allowed suffices : None Default suffix : None Example: RPP:RESET RPP:TRIPPED? Prepares message containing information on whether the RPP circuit is currently tripped in the following format: (0 = not tripped, 1 = tripped) Example: 1 RPP:COUNT? Prepares message containing information on the number of times the RPP circuit has tripped in the following format: Example: 3 Note that the protection circuit may be activated when the generator is set to a high level and the RF OUT socket has no terminating load.

hours since the last reset, as well as to reset the elapsed time to zero. ELAPSED :RESET Reset elapsed operating hours to zero Data type : None Allowed suffices : None Default suffix : None Example: ELAPSED:RESET ELAPSED? Prepares message containing information on elapsed operating hours since last reset in the following format: Example: 454.50 OPER? Prepares message containing information on total operating hours in the following format: Example: 1453.00 Frequency standard selection These commands enable you to select a 10 MHz output to provide a standard for use with associated equipment, as well as enabling you to select a standard (either external or internal) for use by the instrument. When an external standard is selected, the internal TCXO is locked to the external standard using a phase locked loop. In this case, you can select between direct and indirect. When direct is selected the internal standard for the RF tray is provided directly from the external standard. When indirect is selected this standard is provided from the TCXO locked to the external standard. You should select direct if your provided standard is better than that fitted in the instrument. FSTD Select internal or external frequency standard Data type : Character program data (any one of INT, EXT10DIR, EXT1IND, EXT10IND or INT10OUT) Allowed suffices : None Default suffix : None Examples: FSTD INT FSTD EXT10IND FSTD? Prepares message containing information on frequency standard selection in the format: :FSTD Example: :FSTD EXT10IND Reading error messages This command enables the error messages to be read off the error queue in the order that they occurred. ERROR? Prepares message relating to the next error in the error queue in the following format: , Where is a descriptive error message. The numeric value returned is either that of the next error number or 0 if the queue is empty or 399 if the queue is full Example: 100,"Carrier Limit"

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). (i) Queue Status - a '1' indicates that an associated Queue is non-empty and has data available to be read. (ii) Status Register Summary - reports the occurrence of an enabled event monitored by a Status Register Structure. The Service Request Enable Register determines which of the bits can generate an SRQ. This register may be set by *SRE or read by *SRE? If the bitwise -AND of the Status Byte and the Enable Register is non-zero the Flag Master Summary Status () is True. Bit 6 of the Status Byte value read by *STB? holds . However bit 6 of the Status Byte when Serial Polled is the Request For Service bit used to determine which device on the Bus has asserted SRQ, and is cleared by a Serial Poll. The IEEE 488.2 Standard defines bit 4 as Message Available (), the Queue Summary for the Output Buffer, indicating whether any part of a Response Messages is available to be read. Bit 5 is the Event Summary Bit (), the Summary Message from the Standard Event Status Register. With this instrument, bit 7 is a Queue Summary for the Error Queue. Bits 1, 2, and 3 are Status summaries for the Instrument Status, Coupling Status and Hardware Status Registers. Bit 0 is unused.

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. Event Enable Register Summary Message & & & & & Transition Filter # Condition Register Event Register C0072 Device Status continuously monitored by Condition Register OR d d d d d d n n-1 3 1 2 0 & d d d d d d d d 3 1 2 0 d d d d 3 1 2 0 d d d d n n n-1 n-1 d d n n-1 3 2 1 0 The Device Status is continuously monitored by the Condition Register. If a Query to read a Condition Register is provided, the Response represents the Status of the instrument at the moment the Response is generated. A Condition Register cannot be written to. The Transition Filter determines which transition of the Condition Register data bits will set the corresponding bit in the Event Register. Either positive-going, negative-going or both transitions can set bits in an Event Register. But with this instrument the Transition Filters are pre-set as either Positive or Negative, as described in the following pages. The bits in an Event Register are "latched". Once set they remain set, regardless of subsequent changes in the associated condition bit until the Event Register is cleared by being read or by the *CLS common command. Once cleared, an Event Register bit will only be set again if the appropriate change in the Condition bit occurs. The Event Enable Register may be both written to and read from. It is bitwise AND-ed with the Event Register and if the result is non-zero the Summary Message is true, otherwise the Summary Message is false. Enable Registers are not affected by *CLS but are however clear at power-on. Notes

This register is defined by IEEE 488.2 and each bit has the meaning shown below:- *ESR? *ESE *ESE? Register Read/Write Commands & & & & & & & & d e d e d e d e d e d e d e d e 7 7 3 5 5 1 1 6 6 2 2 4 4 3 0 0 Transition Filter # Condition Register Status Register C0069 # Positive transition sets status. Enable Register OR power on user request - not implemented in this product command error execution error device dependent error query error request control - not implemented in this product operation complete - set in response to the *OPC command for synchronization. standard event register summary bit

This is a device dependent register and the bits have meanings as shown in the list at the bottom of the page. Enable Register & & & & & Transition Filter # Condition Register Status Register C0068 OR d d d d d d 15 14 3 1 2 0 & d d d d d d d d 3 1 2 0 e e e e 3 1 2 0 d d d d 15 15 14 14 e e 15 14 3 2 1 0 HCR? HSR? HSE HSE? Register Read/Write Commands # Positive transition sets status. d0 reverse power protection tripped d8 filter unleveled d1 fractional-n loop low d9 output unleveled d2 fractional-n loop high d10 high power amplifier failed d3 external standard missing d11 ALC too high d4 external standard frequency too low d12 ALC too low d5 external standard frequency too high d13 DSP not responding d6 VCXO loop low d14 RF level uncalibrated d7 VCXO loop high d15 not used hardware event register summary bit

This is a device dependent register and the bits have meanings as shown in the list at the bottom of the page. CCR? CSR? CSE CSE? Register Read/Write Commands Transition Filter # Condition Register Status Register C1625 # Positive transition sets status. Enable Register & & & & & & e e 1 0 e e2 3 e e 15 14 d15 d14 d3 d2 d1 d0 d15 d14 d3 d2 d1 d0 d0 d1 d2 d3 d14 d15 OR d0 RF level restricted by requested AM depth d1 not used d2 not used d3 AM2 depth restricted by requested AM1 depth d4 FM2 deviation restricted by requested FM1 deviation d5 ΦM2 deviation restricted by requested ΦM1 deviation d6 not used d7 - d15 not used coupling event register summary bit

This is a device dependent register and the bits have meanings as shown in the list at the bottom of the page. SCR? SSR? SSE SSE? Register Read/Write Commands Transition Filter # Condition Register Status Register C2395 # transition sets status. OR Negative Enable Register d d 15 14 d d 5 4 d d 3 2 d d 1 0 d d 1 0 d d2 3 d d 5 4 d d 15 14 d d 15 14 d d 5 4 d d2 3 d d 1 0 & & & & & & e e 15 14 e e 5 4 e e2 3 e e 1 0 Condition (SCR?) Event Status (SSR?) d0 sweep in progress end of sweep d1 not used not used d2 selfcal in progress selfcal completed d3 DC FM null in progress DC FM null completed d4 - d15 not used not used instrument event register summary bit

C0075 d d d d d d d d 3 7 5 1 2 6 4 0 Status Byte Register ➤ Error Queue Output Queue 8 8 8 Device Dependant Errors Status Byte & Enable Register non-zero From Standard Event Registers Response Message Input from all Error Conditions Response to ERROR? Data from Output Queue - The status bit is set when one or more bytes are available to be read from the Output Queue. The status bit is set when one or more errors are present in the Error Queue. The ERROR? query will place a nr1 and string response message in the Output Queue representing the error at the head of the queue. If the queue is empty this message will be 0, "No error".

*SRE *SRE? & & & & *STB? C0073 OR & e d d e d d e d d e d d e d d e d d e d d e d d 3 3 3 7 7 7 5 5 5 1 1 1 2 2 2 6 6 6 4 4 4 0 0 0 & & - Status Byte Register Service Request Enable Register# Register Read Command Register Read/Write Commands # Bit 6 in this register ignores data sent by *SRE and always returns 0 in response to *SRE? , and are defined in IEEE 488.2 is a device defined queue summary bit indicating that the error queue is non-empty. is true when (Status Byte) AND (Enable register) > 0. is the standard event register summary bit. is 'message available' indicating that the output queue is non-empty. is 'hardware status' summary bit is 'coupling status' summary bit is 'instrument status' summary bit The Status Byte Register is Not cleared by the *STB? query.

*SRE *SRE? C0074 e d d e d d e d d e d d e d d e d d e d d e d d 3 3 3 7 7 7 5 5 5 1 1 1 2 2 2 6 6 6 4 4 4 0 0 0 - Status Byte Register Service Request Enable Register# Register Read/Write Commands Service Request Generation # Bit 6 in this register ignores data sent by *SRE and always returns 0 in response to *SRE? is a device defined queue summary bit indicating that the error queue is non-empty. is set by a request for service and is cleared by the poll. is the standard event register summary bit. is 'message available' indicating that the output queue is non-empty. is 'hardware status' summary bit is 'coupling status' summary bit is 'instrument status' summary bit , and are defined in IEEE 488.2 (request for service) will produce an SRQ at the controller. It is set by a change to either the Status Byte or the Service Enable Register that results in a New Reason for Service. It is cleared when goes FALSE (i.e. no reason for service) or by Serial Poll.

*CLS Clears Status Registers and the Error Queue *ESE Writes to Standard Event Enable Register *ESE? Reads from Standard Event Enable Register *ESR? Reads from Standard Event Status Register *SRE Writes to Service Request Enable Register *SRE? Reads from Service Request Enable Register *STB? Reads from Status Byte Register CCR? Reads from Coupling Condition Register CSE Writes to Coupling Status Enable Register CSE? Reads from Coupling Status Enable Register CSR? Reads from Coupling Status Register HCR? Reads from Hardware Condition Register HSE Writes to Hardware Status Enable Register HSE? Reads from Hardware Status Enable Register HSR? Reads from Hardware Status Register SCR? Reads from Instrument Condition Register SSE Writes to Instrument State Enable Register SSE? Reads from Instrument State Enable Register SSR? Reads from Instrument State Status Register Decimal Numeric Program Data All of the above queries respond with a nr1 numeric format.

(1) Background errors - represent a condition of the instrument. (2) Foreground errors - generally caused by the user. (3) IEEE 488.2 errors - generated by incorrect programming. (4) Fatal errors - caused by failure associated with the main RAM or the PROM. These errors may or may not be displayed according to the severity of the failure or corruption. Background errors: These are generated due to an incorrect operating condition within the instrument. These errors are generated automatically to warn the operator. For example if the reverse power protection circuit should trip error 500 (RPP tripped) will be placed in the error queue. Background errors are listed in Table 3-3. Foreground errors: These are typically generated when an entered parameter value is outside the valid range or for some other invalid operation. For example trying to set the carrier frequency above or below the specified range will put error 100 (Carrier limit) into the error queue. Foreground errors are listed in Table 3-4. Error queue When an error occurs the error number is put into the error queue. The error at the head of the queue is only cleared by the ERROR? query, which returns that error, or by the *CLS command which clears the whole error queue. IEEE 488.2 errors are listed in Table 3-5. The queue holds a maximum of 64 error message error numbers. If an error occurs while the queue is full the last error number is replaced with 399 to indicate that the queue is full. The ERROR? query returns a value of 399 for queue full and 0 for queue empty. When an error number is written into the queue, a bit () in the status byte register is set, and an appropriate bit in the standard event register is also set (one of , , or ). These errors will also generate a VXI controller interrupt for the event 'Request True' if the appropriate interface settings have been set up. Many background errors are also reported in the Hardware and Coupling Status Registers.

- - - 591 ftl Main PROM faulty 590 ftl Main RAM faulty - - - - - - - - - - - - - - - - - - - - - 500 dde RPP tripped 501 dde Fractional-N loop low 502 dde Fractional-N loop high 503 dde Ext standard missing 504 dde External std frequency low 505 dde External std frequency high 506 dde VCXO loop low 507 dde VCXO loop high 508 dde Amplitude modulator unleveled 509 dde Output unleveled 510 dde Power Amp Fail or Unterminated 511 dde ALC too high 512 dde ALC too low 513 dde DSP not responding - - - - - - - - - - - - - - - 549 exe RF level uncalibrated 550 exe RF level limited by AM 551 exe AM2 limited by AM1 552 exe FM2 limited by FM1 553 exe ΦM2 limited by ΦM1

0 dde No error 1 dde EEPROM checksum 2 dde Pad cal checksum 3 dde RF cal checksum 4 dde Freq std checksum 5 dde Synthesizer cal checksum 6 dde Mod ref checksum 7 dde Mod offset checksum 8 dde Mod amp checksum 9 dde ALC cal checksum 10 dde FM cal factor checksum 11 dde FM tracking checksum 12 dde ΦM cal factor checksum 13 dde System cal checksum 14 dde AM cal checksum 15 dde Store checksum 16 dde Image checksum - - - 20 dde Frac-N out of lock at 21 dde VCO cal fail at 22 dde VTF tune cal fail at 23 dde FM tracking cal fail at - 51 dde *Keyboard buffer overflow 52 dde *Display buffer overflow 53 dde *Display missing - - - - - - 100 exe Carrier limit 101 exe Carrier step limit 102 exe RF level limit 103 exe RF level step limit 104 exe Invalid modulation mode 105 exe AM limit 106 exe AM2 limit 107 exe AM step limit 108 exe AM2 step limit 109 exe FM limit 110 exe FM2 limit 111 exe FM step limit 112 exe FM2 step limit 113 exe ΦM limit 114 exe ΦM2 limit 115 exe ΦM step limit 116 exe ΦM2 step limit 117 exe Memory limit 118 exe AM mod freq limit 119 exe AM mod step limit 120 exe AM2 mod freq limit 121 exe AM2 mod step limit 122 exe FM mod freq limit 123 exe FM mod step limit 124 exe FM2 mod freq limit 125 exe FM2 mod step limit 126 exe ΦM mod freq limit 127 exe ΦM mod step limit 128 exe ΦM2 mod freq limit 129 exe ΦM2 mod step limit 130 exe Return/Transfer not allowed 131 exe *Util limit 132 exe Start freq limit 133 exe Stop freq limit 134 exe Sweep time limit 135 exe Sweep mode disabled 136 exe Carrier phase limit 137 exe AM phase limit 138 exe FM phase limit 139 exe ΦM phase limit 140 exe Memory store limit 141 exe Memory recall limit 142 exe *Display blanking limit 143 exe *GPIB address limit 144 exe Latch address limit 145 exe Latch data limit 146 exe Freq std carrier limit 147 exe Freq std course adj limit 148 exe Freq std fine adj limit 149 exe Mod ref adj limit 170 exe *Util not available 171 exe Entry outside limits 172 exe Data out of range 173 exe Units not valid 174 exe Unlev fact limited by FM fact 175 exe *Invalid baud rate 176 exe *Data overrun 177 exe *Data parity 178 exe *Data framing 179 exe *Break in data 180 exe *Transmit buffer full 181 exe *Receiver not enabled 182 exe *Protected utility - Level 1 183 exe *Protected utility - Level 2 184 - - 185 exe This store is Read Only 186 - - 187 - - 188 exe Pulse unavailable in 4FSK mode 189 exe Pulse has been disabled 190 exe No attenuator fitted 191 exe No high power amp fitted 192 - - 193 exe Ext DCFM mod mode required 398 - - 399 exe Error queue full * These errors are not used in this instrument

400 cme Syntax error 401 cme Unrecognised mnemonic 402 cme Numeric syntax 403 cme Data expected 404 cme Illegal data 405 cme Too much data 406 cme Incorrect data type 407 cme Unrecognised character data 408 cme Character data not unique 409 cme Block definition 410 cme Block size 411 cme Missing quote 412 cme Terminator expected 413 cme Invalid unit 414 cme Unit not expected 415 cme No header match found 416 cme Header not unique 417 cme Illegal star command 418 cme Sub-command not allowed 419 cme Action not allowed with header 420 cme Query not allowed with header 421 cme Parser decode - - - - - - - - - - - - - - - - - - - - - - - - 450 qye Query INTERRUPTED 451 qye Query UNTERMINATED 452 qye Query DEADLOCK 453 qye Query lost after arbitrary char - - - - - - - - - - - - - - - - - -

9 kHz to 2.4 GHz. Output levels from -137 dBm to +25 dBm are available. These are C size, 2- slot wide plug-in modules that require a VXI bus mainframe for operation. The simplified block schematic diagram for the instrument is shown in Fig. 4-1. Modulation The carrier frequency can be frequency, phase or amplitude modulated from internal or external sources. The internal source can be the sum of two signals and used in combination with an external source connected to the front panel EXT MOD INPUT connector. Frequency generation A voltage controlled oscillator (VCO) covering the frequency range 400 to 533 MHz is phase locked to a 10 MHz temperature controlled crystal oscillator using a fractional-N synthesizer system. Additional frequency coverage is achieved by means of frequency division and multiplication. Low frequencies are generated by a beat frequency oscillator (BFO) system. Control Internal control of the instrument is achieved by a microprocessor which receives data and sends instructions via an internal 8-bit data bus to the signal processing circuits.

10 MHz out 10MHz PULSE MOD BFO 9kHz- 10MHz MUX AM FM AM MOD HARMONIC FILTERS VCXO LOOP 5MHz FM/ M
2 n 2 x 3, 4, 5 HARMONICS 400 TO 533 MHz VCO FRAC N SYNTH RF LEVEL DAC AM DEPTH DAC DEV'N DAC DAC PULSE INPUT RF OUT LF OUTPUT EXT MOD INPUT TRIGGER INPUT 9kHz-2.4GHz 0.01Hz to 20kHz Fig. 4-1 Block schematic diagram

generator complies with the Performance Data given in Chapter 1. For convenience, the test equipment and specification for each test are summarized before the test procedure. Apart from the UUT, (Unit Under Test), no specific set-up procedures will be included for the test equipment unless the measurement is dependent on specific instrument settings or special measurement techniques. Test precautions To ensure minimum errors and uncertainties when making measurements, it is important to observe the following precautions: (1) Always use recently calibrated test equipment, with any correction figures taken into account, so as to establish a known traceable limit of performance uncertainty. This uncertainty must be allowed for in determining the accuracy of measurements. (2) A common external frequency standard, with an accuracy of ±1 part in 109 should be used for any frequency controlled test equipment. (3) Use the shortest possible connecting leads. (4) Some areas of the specification which are labeled typical rather than having clearly defined limits are not tested.

The test equipment recommended for acceptance testing is shown below. Alternative equipment may be used provided it complies with the stated minimum specification. Recommended test equipment Description Minimum specification Example Power meter ±0.1 dB from 9 kHz to 2.4 GHz IFR 6960B with 6932 sensor Measuring receiver 0 dBm to −127 dBm; 2.5 MHz to 2.4 GHz Capable of measuring residual FM less than 2 Hz and SSB phase noise <−124 dBc/Hz at 20 kHz offset from a 1 GHz carrier Agilent 8902A with option 037 * and 11722A sensor and 11793A down converter Signal generator +8 dBm from 32.5 MHz to 2.43 GHz IFR 2041 Frequency counter 10 Hz to 2.4 GHz Agilent 53181A with option 030 Audio analyzer Capable of measuring THD of 0.01% from 100 Hz to 20 kHz Rohde & Schwarz UPA3 Spectrum analyzer DC to 7.2 GHz, 3 Hz resolution bandwidth Anritsu MS2602A Modulation meter AM, FM and ΦM 50 kHz to 2.4 GHz, Accuracy ±1% at 1 kHz modulation frequency IFR 2305 plus distortion option ** Function generator DC to 100 kHz sine, ±0.6 dB flatness, 100 kHz square wave Agilent 3325B Digital voltmeter DC voltage measurement Solartron 7150+ 50 Ω load (termination) 1 W, 50 Ω nominal impedance, DC to 2.4 GHz Lucas Weinschel M1404N Oscilloscope 100 MHz bandwidth Tektronix TDS 220 Personal Computer with Microsoft Windows version 3.1 (or greater) installed and fitted with National Instruments PCIIA GPIB Interface Card Vero 203-304014B VXI Mainframe Racal 1260-00C GPIB Slot 0 IFR 3002 executable Soft Front Panel, part number 59000-286 * Option 037 is necessary to measure SSB phase noise. ** The distortion option of the 2305 Modulation Meter allows modulation distortion tests to be carried out with greater ease. If a 2305 with the distortion option is not available, the audio analyzer may be connected to the modulation meter LF output and set to measure distortion. Executable soft front panel software The acceptance test procedures use the supplied executable soft front panel as the user interface for the 3002 VXI Signal Generator.

each test procedure by setting: Store/Recall Address 999 Recall At the end of this chapter are a set of results tables which give all the test points for each of the tests. These tables should be photocopied and used to record the results of all the measurements taken. RF output Specification Range −137 dBm to +25 dBm (+19 dBm above 1.2 GHz). When AM is selected, the maximum RF output level decreases linearly with increasing AM depths to +19 dBm (+13 dBm above 1.2 GHz) at 99% depth. Accuracy VSWR For output levels less than −5 dBm output VSWR is less than 1.3:1 for carrier frequencies up to 1.2 GHz and less than 1.5:1 for carrier frequencies up to 2.4 GHz. Output impedance 50 Ω SMA female connector to MIL 390123D. Test equipment Description Minimum specification Example Power meter ±0.1 dB from 9 kHz to 2.4 GHz IFR 6960B and 6932 Measuring receiver 0 dBm to −127 dBm; 2.5 MHz to 2.4 GHz Agilent 8902A with 11722A sensor and 11793A down converter Signal generator +8 dBm from 32.5 MHz to 2.43 GHz IFR 2041 Accuracy over temperature range 17°C to 27°C 9 kHz to 1.2 GHz 1.2 GHz to 2.4 GHz >−127 dBm ±1.0 dB ±2.0 dB Temperature coeff. over temperature range 0°C to 55°C 9 kHz to 1.2 GHz 1.2 GHz to 2.4 GHz <±0.02 dB/°C <±0.04 dB/°C

Test procedure UUT C2558 RF OUT SENSOR INPUT 6960B RF power meter 6932 Power sensor Fig. 5-1 RF output test set-up (1) Perform AUTO ZERO and AUTO CAL on the power meter. (2) Connect the test equipment as shown in Fig. 5-1. (3) On the UUT set: Carr Freq 30 kHz RF Level 0 dBm (4) Record the output level measured by the power meter against each of the carrier frequencies shown in Table 5-1 checking that the results are within specification. (5) Set the UUT RF level to +7 dBm and repeat (4) using Table 5-2. (6) Set the UUT RF level to +25 dBm and repeat (4) using Table 5-3, decreasing the RF level to +19 dBm when testing at carrier frequencies above 1.2 GHz. ALC linearity Test procedure (1) Perform AUTO ZERO and AUTO CAL on the power meter. (2) Connect the test equipment as shown in Fig. 5-1. (3) On the UUT set: Carr Freq 2.5 MHz RF Level −4 dBm (4) Record the output level measured by the power meter against each of the steps shown in Table 5-4 checking that the results are within specification. (5) Set the UUT carrier frequency to 950 MHz and repeat (4) using Table 5-5. (6) Set the UUT carrier frequency to 1200 MHz and repeat (4) using Table 5-6. (7) Set the UUT carrier frequency to 1900 MHz and repeat (4) using Table 5-7. (8) Set the UUT carrier frequency to 2400 MHz and repeat (4) using Table 5-8.

(1) Connect the test equipment as shown in Fig. 5-2. (2) On the UUT set: Carr freq 2.6 MHz RF Level −4 dBm Set ∆ 11 ENTER (3) Tune the receiver to 2.6 MHz and record the output level measured in Table 5-9 checking that the result is within specification. (4) Set the UUT RF level to −4.1 dBm. Measure the received level and record the result in Table 5-9, checking that the result is within specification. (5) Decrement the UUT, using the
icon, in 11 dB steps down to an RF level of −103.1 dBm measuring the received level at each step shown in Table 5-9 checking that the results are within specification. (6) Set the UUT to carrier frequency 480.1 MHz and repeat (2) to (5) using Table 5-10. (7) Set the UUT to carrier frequency 1199 MHz and repeat (2) to (5) using Table 5-11. The down converter will automatically be enabled when testing frequencies above 1300 MHz. (8) Set the local oscillator to +8 dBm at a carrier frequency of 62 MHz less than the test frequency (i.e. 1813.1 MHz). (9) On the receiver, enter the local oscillator frequency followed by the test frequency. (10) Set the UUT to carrier frequency 1875.1 MHz and repeat (2) to (5) using Table 5-12. (11) Set the UUT to carrier frequency 2399 MHz and repeat (2) to (5) using Table 5-13.

This check provides a conventional method of checking the signal generator frequency locking circuitry. It will confirm correct operation of phase locked loops and dividers. Overall accuracy is determined by the instrument’s internal reference standard. Specification Range 9 kHz to 2.4 GHz. Resolution 1 Hz. Accuracy Equal to the frequency standard accuracy. Test equipment Description Minimum specification Example Frequency counter 9 kHz to 2.4 GHz Agilent 53181A with option 030 Test procedure UUT C5356 RF OUT INPUT Counter Fig. 5-3 Carrier frequency accuracy test set-up (1) Connect the test equipment as shown in Fig. 5-3. (2) Connect the internal frequency standard from the UUT to the external standard input on the counter. (3) On the UUT set: Carr Freq 9 kHz RF Level 0 dBm (4) Record the frequency measured by the counter against each of the carrier frequencies shown in Table 5-14. (Since the two instruments’ frequencies are locked together, the limit is ±1 digit on the counter display.) (5) At 1200 MHz disconnect the UUT internal frequency standard from the counter and instead apply the external reference. Check the result against the 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' in Chapter 1).

typically better than −25 dBc for levels 6 dB below the maximum specified output. Non-harmonics (offsets > 3 kHz) Better than −70 dBc for carrier frequencies up to 1 GHz, better than −64 dBc for carrier frequencies above 1 GHz, better than −60 dBc for carrier frequencies above 2 GHz. Residual FM (FM off) Less than 4.5 Hz RMS in a 300 Hz to 3.4 kHz bandwidth at a carrier frequency of 1 GHz. SSB phase noise Better than −124 dBc/Hz at 20 kHz offset from a 470 MHz carrier. Typically −121 dBc/Hz at 20 kHz offset from a 1 GHz carrier. Test equipment Description Minimum specification Example Spectrum analyzer DC to 7.2 GHz frequency coverage Anritsu MS2602A Measuring receiver 0 dBm to −127 dBm; 2.5 MHz to 2.4 GHz Capable of measuring residual FM less than 2 Hz and SSB phase noise <−124 dBc/Hz at 20 kHz offset from a 1 GHz carrier Agilent 8902A with option 037 Signal generator +8 dBm from 32.5 MHz to 2.43 GHz IFR 2041 Harmonics Test procedure C5357 RF OUT RF INPUT UUT Spectrum analyzer Fig. 5-4 Carrier harmonics and non-harmonics test set-up (1) Press CAL on the spectrum analyzer. (2) Connect the test equipment as shown in Fig. 5-4. (3) On the UUT set: Carr Freq 10 kHz RF Level −4 dBm

carrier frequencies shown in Table 5-15 checking that the results are within specification. (5) Set the UUT RF level to +7 dBm and repeat (4) using Table 5-16. (6) Set the UUT RF level to +13 dBm and repeat (4) using Table 5-17. (7) Set the UUT RF level to +19 dBm and repeat (4) up to 1.2 GHz using Table 5-18. Non-harmonics Test procedure (1) Press CAL on the spectrum analyzer. (2) Connect the test equipment as shown in Fig. 5-4. (3) On the UUT set: Carr Freq 1201 MHz RF Level 0 dB (4) Measure the level of the non-harmonics on the spectrum analyzer at each of the carrier frequencies shown in Table 5-19 checking that the results are within specification. Residual FM Test procedure UUT C2562 RF OUT RF INPUT Measuring receiver Fig. 5-5 Residual FM test set-up (1) Connect the test equipment as shown in Fig. 5-5. (2) On the UUT set: Carr Freq 1 [GHz] RF Level 0 dBm (3) On the measuring receiver select FM, 300 Hz high-pass filter, 3.4 kHz low-pass filter and enable averaging. (4) Measure the residual FM checking that the result is within the specification shown in Table 5-20.

Test procedure UUT C2563 RF LO RF OUTPUT Signal generator RF OUT Measuring receiver Fig. 5-6 SSB phase noise test set-up (1) Connect the test equipment as shown in Fig. 5-6. (2) On the UUT set: Carr Freq 470 MHz RF Level 0 dBm (3) On the measuring receiver: Tune the receiver to 470 MHz. Select 24.0 SPCL to enter selective power measurement mode. Select 23.1 SPCL to set the LO to external. (4) Set the signal generator to a carrier frequency of 470.455 MHz, RF level 0 dBm. (5) On the measuring receiver: Select 24.5 SPCL to establish the IF reference value (in volts). Select 24.6 SPCL to set the reference to 0 dBm. (6) Fine tune the signal generator frequency until a maximum value is displayed on the measuring receiver. (7) Offset the signal generator by 20 kHz. (8) On the measuring receiver: Select 24.7 SPCL to normalize the measurement for a 1 Hz bandwidth. (9) Offset the signal generator by 20 kHz. (10) Measure the level on the receiver (the SSB phase noise in a 1 Hz bandwidth) checking that the result is within the specification shown in Table 5-21.

Resolution 3 digits or 1 Hz. Accuracy ±5% at 1 kHz modulation rate. Bandwidth (1 dB) DC to 100 kHz (DC coupled), 10 Hz to 100 kHz (AC coupled), 20 Hz to 100 kHz (AC coupled with ALC). Carrier frequency offset Less than 1% of the set frequency deviation when DC coupled. Distortion Less than 3% at 1 kHz rate for deviations up to 100 kHz. Typically <0.5% at 1 kHz rate for deviations up to 10 kHz. FSK 2 level or 4 level FSK. Note that 4 FSK is not available with Option 11 Fast Pulse fitted. Test equipment Description Minimum specification Example Modulation meter FM accuracy ±1% at 1 kHz modulation frequency IFR 2305 with distortion option DVM DC voltage measurement Solartron 7150+ 50 Ω load (termination) 1 W, 50 Ω nominal impedance, DC to 2.4 GHz Lucas Weinschel M1404N Audio analyzer Capable of measuring THD of 0.01% from 100 Hz to 20 kHz Rohde & Schwarz UPA3 Function generator DC to 100 kHz sine, ±0.6 dB flatness Agilent 3325B FM deviation and distortion Test procedure UUT 2305 Modulation meter C2564 RF INPUT RF OUT Fig. 5-7 Internal modulation and modulation distortion test set-up

(2) On the UUT set: Carr Freq 10 MHz RF Level 0 dBm FM1 Level 100 kHz Mod On Source On (3) On the modulation meter select CAL, FM, 50 Hz  15 kHz filter. (4) Measure the FM accuracy and distortion at the carrier frequencies shown in Table 5-22 checking that the results are within specification. FM scale shape Test procedure (1) Connect the test equipment as shown in Fig. 5-7. (2) On the UUT set: Carr Freq 15 MHz RF Level 0 dBm FM1 Level 100 kHz Mod On Source On (3) On the modulation meter select CAL, FM, 50 Hz  15 kHz filter. (4) Measure the FM accuracy at the deviations shown in Table 5-23 checking that the results are within specification.

(2) On the UUT set: Carr Freq 1200 MHz RF Level 0 dBm (3) On the modulation meter select CARRIER ERROR. The FREQUENCY display will read 0.00 kHz. (4) On the UUT set: Mod Mode FM External FM1 Level 100 kHz Source On Mod On DC coupling Null DCFM (5) On the modulation meter measure the carrier frequency error displayed in the FREQUENCY window checking that the result is within the specification shown in Table 5-24. External FM frequency response (ALC off, DC coupled) Test procedure 2305 Modulation meter C2565 RF OUT OUTPUT Temporary connection RF INPUT LF OUTPUT INPUT Function generator DVM 50 load Ω Audio analyzer UUT EXT MOD INPUT Fig. 5-8 External modulation and modulation distortion test set-up 30 Hz to 100 kHz (1) Connect the test equipment as shown in Fig. 5-8. (2) On the UUT set: Carr Freq 15 MHz RF Level 0 dBm Mod Mode FM External FM1 Level 50 kHz Source On Mod On DC coupling (3) Set the function generator to give 1V RMS, 1 kHz sine wave. (4) On the modulation meter select CAL, FM, 10 Hz  300 kHz filter.

set a reference using the relative function. (6) Set the function generator to each of the frequencies shown in Table 5-25 checking that the relative readings on the modulation meter are within specification. (7) At those frequencies indicated in Table 5-25, set the modulation meter LF output control to mid-position and measure the AF distortion on the audio analyzer, checking that the results are within specification. 0 Hz (DC) To measure the FM deviation at DC, it will be necessary to use the DC offset facility on the function generator proceeding as follows: (8) Set the function generator to +1.4142 V DC (temporarily connect the function generator output to the DVM and set this voltage as close as possible to +1.4142 V). (9) Press CARRIER ERROR on the modulation meter. (10) Set the function generator to −1.4142 V DC (temporarily connect the function generator output to the DVM and set this voltage as close as possible to −1.4142 V). (11) Measure the frequency indicated on the modulation meter carrier frequency window. FM1 _____ (12) Reset the function generator to 1V RMS, 1 kHz sine wave and measure the FM deviation. FM2 _____ (13) Using the following formula, calculate the change in response checking that the result is within the specification shown against 0 Hz in Table 5-25.
  FM1 2FM2 log 20 10 External FM frequency response (ALC on) Test procedure (1) Connect the test equipment as shown in Fig. 5-8. (2) On the UUT set: Carr Freq 15 MHz RF Level 0 dBm Mod Mode FM External FM1 Level 10 kHz Source On Mod On ALC coupling (3) Set the function generator to give 0.75 V RMS, 1 kHz sine wave. (4) On the modulation meter select CAL, FM, 10 Hz  300 kHz filter. (5) On the modulation meter check that the FM reading is between 9.5 kHz and 10.5 kHz, then set a reference using the relative function. (6) Set the function generator to each of the frequencies shown in Table 5-26 checking that the relative readings on the modulation meter are within specification. (7) Set the function generator to 1.25 V RMS and repeat (4) to (6) using Table 5-27, also measuring the AF distortion on the audio analyzer at those frequencies indicated.

Resolution 3 digits or 0.01 radians. Accuracy at 1 kHz ±5% of indicated deviation excluding residual phase modulation. Bandwidth (3 dB) 100 Hz to 10 kHz. Distortion Less than 3% at 10 radians at 1 kHz modulation rate. Typically <0.5% for deviations up to 1 radian at 1 kHz. Test equipment Description Minimum specification Example Modulation meter ΦM and FM accuracy ±2% at 1 kHz modulation frequency IFR 2305 with distortion option Phase modulation Test procedure (1) Connect the test equipment as shown in Fig. 5-7. (2) On the UUT set: Carr Freq 10.5 MHz RF Level 0 dBm Source On Mod Mode PM Internal PM1 Level 10 rad (3) On the modulation meter, select CAL, ΦM. (4) Measure the ΦM accuracy and distortion checking that the results are within the specification shown in Table 5-28. Phase modulation flatness Test procedure For this test, the phase modulation figures are calculated from readings taken with the modulation meter set to FM. No allowances need to be made for the modulation source frequency accuracy since it is derived from the reference oscillator in the UUT. (1) Connect the test equipment as shown in Fig. 5-7. (2) On the UUT set: Carr Freq 15 MHz RF Level 0 dBm Mod Mode PM Internal Source On Mod On PM1 Level 10 rad (3) On the modulation meter, select CAL, FM, 50 Hz  15 kHz LF filter. (4) Measure the deviation on the modulation meter and calculate the phase modulation using the formula:
     = Φ (Hz) freq mod (Hz) dev FM M (5) On the UUT set mod source to each of the frequencies shown in Table 5-29, measure the deviation on the modulation meter and calculate the phase modulation for each step using the formula in (4).

modulation frequency using the formula:
     ) 4 ( in recorded Figure )5 ( in recorded Figure log 20 10 Check that the results are within the specifications shown in Table 5-29. Amplitude modulation Specification Range 0 to 99.9%. Resolution 0.1%. Accuracy For carrier frequencies less than 500 MHz (usable to 2 GHz): ±5% of set depth at 1 kHz rate at +17°C to 27°C ambient temperature. Temperature coefficient <0.02% per °C. Bandwidth (1 dB) DC to 30 kHz (DC coupled), 10 Hz to 30 kHz (AC coupled), 20 Hz to 30 kHz (AC coupled with ALC). Distortion Less than 2.5% at 1 kHz rate for modulation depths up to 80%, Less than 1.5% at 1 kHz rate for modulation depths up to 30%. Test equipment Description Minimum specification Example Modulation meter AM accuracy ±1% at 1 kHz modulation frequency IFR 2305 with distortion option DVM DC voltage measurement Solartron 7150+ 50 Ω load (termination) 1 W 50 Ω nominal impedance, DC to 2.4 GHz Lucas Weinschel M1404N Audio analyzer Capable of measuring THD of 0.01% from 100 Hz to 20 kHz Rohde & Schwarz UPA3 Function generator DC to 30 kHz sine, ±0.6 dB flatness Agilent 3325B AM depth and distortion Test procedure (1) Connect the test equipment as shown in Fig. 5-7. (2) On the UUT set: Carr Freq 1.5 MHz RF Level −4 dBm Mod Mode AM Internal Source On Mod On AM1 Level 30% (3) On the modulation meter, select CAL, AM, 300 Hz  3.4 kHz LF filter. (4) Measure the AM accuracy and distortion at the frequencies shown in Table 5-30 checking that the results are within specification. (5) Set the UUT AM1 level to 80% and repeat (4). (6) Set the UUT to RF level +7 dBm and repeat (2) to (5) using Table 5-31. (7) Set the UUT to RF level +13 dBm and repeat (2) to (5) using Table 5-32.

AM scale shape Test procedure (1) Connect the test equipment as shown in Fig. 5-7. (2) On the UUT set: Carr Freq 100 MHz RF Level 0 dBm Mod Mode AM Internal Source On Mod On AM1 Level 30% (3) On the modulation meter, select CAL, AM, 300 Hz  3.4 kHz LF filter. (4) Measure the AM accuracy at the depths shown in Table 5-34 checking that the results are within specification. External AM frequency response (ALC off, DC coupled) Test procedure 100 Hz to 30 kHz (1) Connect the test equipment as shown in Fig. 5-8. (2) On the UUT set: Carr Freq 400 MHz RF Level −4 dBm Mod Mode AM External AM1 Level 80% Source On Mod On DC coupling (3) Set the function generator to give 1 V RMS, 1 kHz sine wave. (4) On the modulation meter select CAL, AM, 10 Hz  300 kHz filter. (5) On the modulation meter check that the AM reading is between 76% and 84%, then set a reference using the relative function. (6) Record the absolute reading for use in the formula in (16) below. (7) Set the function generator to each of the frequencies shown in Table 5-35 checking that the relative readings on the modulation meter are within specification. (8) Set the UUT RF level to +7 dBm and repeat (3) to (7) using Table 5-36. (9) Set the UUT RF level to +13 dBm and repeat (3) to (7) using Table 5-37.

generator proceeding as follows: 6960B RF power meter 6912 Power sensor C2566 OUTPUT Temporary connection SENSOR INPUT Function generator DVM RF OUT 50 load Ω UUT EXT MOD INPUT Fig. 5-9 0 Hz external AM and distortion test set-up (9) Connect the test equipment as shown in Fig. 5-9. (10) Set the function generator to +1.4142 V DC (temporarily connect the function generator output to the DVM and set this voltage as close as possible to +1.4142 V). (11) Measure the power on the power meter. P1 _____ (12) Set the function generator to −1.4142 V DC (temporarily connect the function generator output to the DVM and set this voltage as close as possible to −1.4142 V). (13) Measure the power on the power meter. P2 _____ (14) Subtract P2 from P1 (= x). (15) Calculate the modulation depth using the formula:

 

  (-x/20) (-x/20) 10 + 1 10 - 1 = AM(%) (16) Calculate the 0 Hz response relative to 1 kHz using the following formula, recording the result in Table 5-35:
     ) 15 ( in recorded Figure ) 6 ( in recorded Figure log 20 10 (17) Set the UUT RF level to +7 dBm and repeat (10) to (16) using Table 5-36. (18) Set the UUT RF level to +13 dBm and repeat (10) to (16) using Table 5-37.

Specification Carrier frequency range 32 MHz to 2.4 GHz, usable to 10 MHz. RF level range Maximum guaranteed output is reduced to +20 dBm, +14 dBm above 1.2 GHz. RF level accuracy When pulse modulation is enabled, adds ±0.5 dB to the RF level accuracy. ON/OFF ratio Better than 45 dB below 1.2 GHz. Better than 40 dB above 1.2 GHz. Rise and fall time Less than 10 µs. Test equipment Description Minimum specification Example Power meter ±0.1 dB from 9 kHz to 2.4 GHz IFR 6960B and 6912 Spectrum analyzer Frequency coverage 32 MHz to 2.4 GHz Anritsu MS2602A Oscilloscope 100 MHz bandwidth Tektronix TDS 220 Function generator DC to 10 kHz square wave Agilent 3325B Pulse modulation RF level frequency response Fig. 5-10 Pulse modulation test set-up Test procedure (1) Perform AUTO ZERO and AUTO CAL on the power meter. (2) Connect the test equipment as shown in Fig. 5-10. (3) On the UUT set: Carr Freq 32 MHz RF Level −7 dBm Pulse ON (4) Set the function generator to provide +5 V DC. The RF output will now be enabled. (5) Record the output level measured by the power meter against each of the carrier frequencies shown in Table 5-38 checking that the results are within specification. (6) Set the UUT RF level to +4 dBm and repeat (5) using Table 5-39.

Pulse modulation on/off ratio C5358 OUTPUT Function generator RF OUT UUT PULSE INPUT RF INPUT Spectrum analyzer Fig. 5-11 Pulse modulation on/off ratio test set-up Test procedure (1) Press CAL on the spectrum analyzer. (2) Connect the test equipment as shown in Fig. 5-11. (3) On the UUT set: Carr Freq 32 MHz RF Level 0 dBm Pulse ON (4) Set the function generator to provide +5 V DC. The RF output will now be enabled (5) Tune the spectrum analyzer to the same frequency as the signal generator. (6) Press PEAK FIND on the spectrum analyzer and note the output level. (7) Apply a short circuit to the PULSE INPUT socket. (8) Again note the output level measured by the spectrum analyzer. (9) 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 5-41. (10) Repeat (5) to (9) for each of the frequencies shown in Table 5-41.

C2567 OUTPUT Function generator RF OUT UUT PULSE INPUT Oscilloscope Fig. 5-12 Pulse modulation rise and fall time test set-up Test procedure (1) Connect the test equipment as shown in Fig. 5-12. (2) On the UUT set: Carr Freq 50 MHz RF Level +7 dBm Pulse ON (3) Set the function generator to produce 10 kHz, 0 V to +5 V square wave. (4) Adjust the oscilloscope controls such that the rise time of the envelope can be measured. (5) Measure the rise time between the 10% to 90% points checking that it is within the specification shown in Table 5-42. (6) Repeat (4) to (5) for the fall time of the envelope. Modulation oscillator Specification Frequency range 0.01 Hz to 20 kHz. Resolution 0.01 Hz for frequencies up to 100 Hz, 0.1 Hz for frequencies up to 1 kHz, 1 Hz for frequencies up to 20 kHz. Frequency accuracy As frequency standard. Distortion Less than 0.1% THD at 1 kHz. Waveforms Sine to 20 kHz, triangle or square wave to 3 kHz. Audio output The modulation oscillator signal is available on a front-panel BNC connector at a level of 2 V RMS EMF from a 600 Ω source impedance. Test equipment Description Minimum specification Example Frequency counter 9 kHz to 2.4 GHz Agilent 53181A with option 030 Audio analyzer Capable of measuring THD of 0.01% at 1 kHz Rohde & Schwarz UPA3

Test procedure C5359 INPUT LF OUTPUT UUT Counter Fig. 5-13 Modulation oscillator frequency test set-up (1) Connect the test equipment as shown in Fig. 5-13. (2) On the UUT set: FM1 Freq 10 Hz (3) Record the frequency measured by the counter against each of the modulation oscillator frequencies shown in Table 5-43. Modulation oscillator distortion and LF output flatness Test procedure LF OUTPUT UUT C2569 INPUT Audio analyzer Fig. 5-14 Modulation oscillator distortion test set-up (1) Connect the test equipment as shown in Fig. 5-14. (2) On the UUT set: FM1 Freq 1 kHz

specification shown in Table 5-44. (4) Measure the absolute level on the audio analyzer (in dBm) and record this level as a reference. (5) Set the UUT mod source to each of the frequencies shown in Table 5-44. Subtract the level measured on the audio analyzer at each frequency from that recorded in (4) checking that the results are within specification. External frequency standard input Specification External input Front-panel BNC connector accepts an input of 1 MHz or 10 MHz at 220 mV RMS to 1.8 V RMS into 1 kΩ. Test equipment Description Minimum specification Example Signal generator 220 mV to 1.8 V RMS, 1 MHz to 10 MHz IFR 2041 or 2030 Test procedure UUT C2570 FREQ STD I/O RF OUTPUT Signal generator Fig. 5-15 External standard test set-up. (1) Connect the test equipment as shown in Fig. 5-15. (2) On the UUT set: Freq Std External 1 Direct (3) Set the signal generator to RF level 220 mV EMF, carrier frequency 1 MHz. (4) Using Table 5-45, check that no external standard error messages are displayed on the UUT. (5) Set the signal generator to 1.8 V EMF and repeat (4). (6) On the UUT set Freq Std External 10 Indirect (7) Set the signal generator to carrier frequency 10 MHz and repeat (4). (8) Set the signal generator to 220 mV and repeat (4).

For 3002 Signal Generator, serial number _ _ _ _ _ _ / _ _ _ Table 5-1 RF output at −4 dBm Carrier frequency (MHz) RF level min. (dBm) Result (dBm) RF level max. (dBm) 0.03 −5 _______ −3 0.33 −5 _______ −3 9 −5 _______ −3 11 −5 _______ −3 60 −5 _______ −3 180 −5 _______ −3 300 −5 _______ −3 420 −5 _______ −3 540 −5 _______ −3 660 −5 _______ −3 780 −5 _______ −3 900 −5 _______ −3 1020 −5 _______ −3 1140 −5 _______ −3 1200 −5 _______ −3 1201 −6 _______ −2 1260 −6 _______ −2 1320 −6 _______ −2 1380 −6 _______ −2 1440 −6 _______ −2 1500 −6 _______ −2 1560 −6 _______ −2 1620 −6 _______ −2 1680 −6 _______ −2 1740 −6 _______ −2 1800 −6 _______ −2 1860 −6 _______ −2 1920 −6 _______ −2 1980 −6 _______ −2 2040 −6 _______ −2 2100 −6 _______ −2 2160 −6 _______ −2 2220 −6 _______ −2 2340 −6 _______ −2 2400 −6 _______ −2

Carrier frequency (MHz) RF level min. (dBm) Result (dBm) RF level max. (dBm) 0.03 +6 _______ +8 0.33 +6 _______ +8 9 +6 _______ +8 11 +6 _______ +8 60 +6 _______ +8 180 +6 _______ +8 300 +6 _______ +8 420 +6 _______ +8 540 +6 _______ +8 660 +6 _______ +8 780 +6 _______ +8 900 +6 _______ +8 1020 +6 _______ +8 1140 +6 _______ +8 1200 +6 _______ +8 1201 +5 _______ +9 1260 +5 _______ +9 1320 +5 _______ +9 1380 +5 _______ +9 1440 +5 _______ +9 1500 +5 _______ +9 1560 +5 _______ +9 1620 +5 _______ +9 1680 +5 _______ +9 1740 +5 _______ +9 1800 +5 _______ +9 1860 +5 _______ +9 1920 +5 _______ +9 1980 +5 _______ +9 2040 +5 _______ +9 2100 +5 _______ +9 2160 +5 _______ +9 2220 +5 _______ +9 2340 +5 _______ +9 2400 +5 _______ +9

Carrier frequency (MHz) RF level min. (dBm) Result (dBm) RF level max. (dBm) 0.03 +24 _______ +26 0.33 +24 _______ +26 9 +24 _______ +26 11 +24 _______ +26 60 +24 _______ +26 180 +24 _______ +26 300 +24 _______ +26 420 +24 _______ +26 540 +24 _______ +26 660 +24 _______ +26 780 +24 _______ +26 900 +24 _______ +26 1020 +24 _______ +26 1140 +24 _______ +26 1200 +24 _______ +26 +19 dBm 1201 +17 _______ +21 1260 +17 _______ +21 1320 +17 _______ +21 1380 +17 _______ +21 1440 +17 _______ +21 1500 +17 _______ +21 1560 +17 _______ +21 1620 +17 _______ +21 1680 +17 _______ +21 1740 +17 _______ +21 1800 +17 _______ +21 1860 +17 _______ +21 1920 +17 _______ +21 1980 +17 _______ +21 2040 +17 _______ +21 2100 +17 _______ +21 2160 +17 _______ +21 2220 +17 _______ +21 2340 +17 _______ +21 2400 +17 _______ +21