Output control, Output? | VXI 3002 guide

Output control

These commands allow you to download and store settings without the output changing.

OUTPUT

:DISABLE

:ENABLE

	[not used alone]
	Allows user to download and store settings in the normal way without
	the output of the instrument changing until the OUTPUT:ENABLE
	command is received.
	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
	OUTPUT?	the following format:
		the following format:
		: OUTPUT: <status>
		where: <status> is a program mnemonic indicating whether the
		output control is ENABLED or DISABLED

Examples: :OUTPUT:ENABLE :OUTPUT:DISABLE

3-9

Image 39

VXI 3002 manual Output control, Output?

Contents

3002 3002 Chapter Intended audienceStructure Document conventions Contents Patent protection Preface Electrical hazards DC supply voltage SymbolsSymbol Description General conditions of use Beryllium copper Fire hazardToxic hazards Beryllia Suitability for use Installation Sécurité électrique tension d’alimentation continue Symboles signalant un risqueSymbole Nature du risque Conditions générales d’utilisation Utilisation Risque lié au feuLe Béryllia Bronze au bérylliumPage Elektrische Schläge Gleichspannungsversorgung GefahrensymboleSymbol Gefahrenart Allgemeine Hinweise zur Verwendung Beryllium Kupfer BrandgefahrWarnung vor giftigen Substanzen Beryllium Oxid Simbolo Tipo di pericolo Simboli di pericoloCondizioni generali d’uso Pericoli da elettricità alimentazione a c.c Rame berillio Pericolo dincendioPericolo sostanze tossiche Berillio Caratteristiche d’uso Símbolo Naturaleza del peligro Símbolos de peligroCondiciones generales de uso Nivel peligroso de electricidad tensión de alimentación DC Berilio-cobre Peligro de incendioAviso de toxicidad Berilio Idoneidad de uso Introduction ContentsMain features Chapter Triggers IncrementingFrequency sweep Memory Performance data Pulse Modulation Phase ModulationFrequency Modulation FSK Frequency Standard Sweep ModeInternal LF Generator External Modulation Input Compatibility Versions, options and accessoriesSafety Electromagnetic Qualifying Notes SafetyCertificate Ref. No. DC230 Reference No Title Ventilation requirements Setting logical addressList of figures Initial visual inspection Rectification Installing in VXI mainframeRoutine safety testing and inspection Visual inspection Cleaning Front panel connectors and indicatorsPutting into storage Disk installation/loading instructions Switching on Introduction Device listening elementsDevice talking elements Programming Program messagesCompound headers Mnemonic Common commands and queries IeeeProgram data Message exchange protocol OPC Device dependent commands Instrument default settings Default settings Carrier frequency CfrqCFRQ? Rflv RF level RFLV? RFLVLIMIT?RFLVOFFS? Output control OutputOUTPUT? MODE? Modulation modeValid Mode Combinations Table Mode Modulation control MODMOD? FM or FM1 or FM2 Frequency modulation and FSK FMMODF? or FM1MODF? or FM2MODF? Dcfmnl PM or PM1 or PM2 Phase modulation PMMODF? or PM1MODF? AM or AM1 or AM2 Amplitude modulation AM? or AM1? or AM2? Pulse modulation PulsePULSE? Full store Memory storesMemory store Carrier store Memory-recall Recalling default settings Memory sequencing Memory erase MTRIG? Memory triggeringMemory protection Mtrig Sweep operation SweepSWEEPCFRQ? SWEEP? Sweep mode Sweep control Halt Cont Reset Retn Xfer TRIGGERSOURCE? Trigger sourceSources Trigger Atten RF level Atten. lock Setting dBm Min. dBm Max. dBm FromAttenuator hold Attenuator lock ranges Reverse power protection Power-up options Reading error messages Operating hoursFrequency standard selection Status byte Status data structure register model ESE ESE? Standard event registers HSE? Hardware event registers CSE? Coupling event registers SSE SSE? Instrument event registers Queue flag details Error Queue SRE SRE? Status byte when read by *STB? Service Request Generation Service Request Enable Register# Status byte when read by serial poll Summary of status reporting commands and queries Error queue Error handlingBackground errors Foreground errors Background errors 500 599 in priority order Error Messages Foreground errors 0 Ieee 488.2 errors 400 Modulation Frequency generationControl Block schematic diagram Test precautions Acceptance Testing Executable soft front panel software Recommended test equipment Test equipment SpecificationDescription Minimum specification Example RF output Test procedure RF level frequency responseALC linearity Measuring Attenuator accuracy Counter Carrier frequency accuracy Spectral purity HarmonicsSpectrum analyzer Residual FM Non-harmonics SSB phase noise test set-up SSB phase noise FM deviation and distortion Internal FM FM scale shape Carrier error External FM frequency response ALC off, DC coupledHz to 100 kHz Hz DC External FM frequency response ALC on Phase modulation flatness Phase modulation Figure recorded in 5 20 log10 Figure recorded AM depth and distortion Test procedure Hz to 30 kHz AM scale shapeExternal AM frequency response ALC off, DC coupled DVM 10 Pulse modulation test set-up Pulse modulation RF level frequency response Function generator Pulse modulation on/off ratio Pulse modulation rise and fall time Modulation oscillator Modulation oscillator distortion and LF output flatness Modulation oscillator frequencies 15 External standard test set-up External frequency standard input RF output at −4 dBm For 3002 Signal Generator, serial number RF output at +7 dBm +19 dBm RF output at +25 dBm RF level dBm RF level min DBm Result dBm RF level max ALC linearity at 2.5 MHz ALC linearity at 950 MHz ALC linearity at 1200 MHz ALC linearity at 1900 MHz ALC linearity at 2400 MHz RF level dBm RF level min Result dBm RF level max DBm Attenuator test at 2.6 MHz 10 Attenuator test at 480.1 MHz 11 Attenuator test at 1199 MHz 12 Attenuator test at 1875.1 MHz 13 Attenuator test at 2399 MHz Frequency MHz Frequency min Result MHz Frequency max 14 Carrier frequency tests 15 Carrier harmonic tests at −4 dBm 16 Carrier harmonic tests at +7 dBm 17 Carrier harmonic tests at +13 dBm 18 Carrier harmonic tests at +19 dBm Carrier frequency Residual FM Measured value Hz RMS 21 SSB phase noise test19 Carrier non-harmonic tests 20 Residual FM test FM deviation kHz Result kHz Min. kHz Max. kHz 23 FM scale shape tests at 15 MHz carrier Carrier error Result kHz 24 Carrier error test at 1.2 GHz, FM deviation 100 kHz 10.5 29 Internal ΦM flatness test 30 Internal AM depth and distortion tests at −4 dBm31 Internal AM depth and distortion tests at +7 dBm 33 Internal AM depth and distortion tests at +19 dBm 32 Internal AM depth and distortion tests at +13 dBm AM depth % AM depth min Result % Max. % 34 AM scale shape test 38 Pulse modulation RF output at −7 dBm 39 Pulse modulation RF output at +4 dBm Pulse modulation on/off ratio test 40 Pulse modulation RF output at +14 dBm Modulation oscillator frequency tests 44 Modulation oscillator distortion and LF output tests45 External frequency standard tests Operation Acceptance testingAnnex a General description Spectrum analyzer Test procedure Annex-A-3 Table A-1 Pulse mod. RF output at −7 dBm Table A-2 Pulse mod. RF output at +0 dBm Table A-3 Pulse mod. RF output at +16 dBm Table A-4 Pulse modulation on/off ratio test Table A-5 Pulse modulation rise and fall time testResult ns Software Licence and Warranty Indemnity China Beijing Email info-test@aeroflex.comChina Shanghai UK Stevenage