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Agilent Technologies U2761A manual Generate AM Using Scpi Commands

Models: U2761A

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2 Features and Functions

Generate AM Using SCPI Commands

Example 1
-> CLS; RST	//To reset the U2761A to default
	power-on state, this command
	can be ignored if this operation
	is not required.
-> AM:STAT ON	//Enables AM.
-> FUNC SQU	//Sets the carrier waveform to
	Square wave.
-> FREQ 2000	//Sets the carrier frequency to
	2 kHz.
-> VOLT 5 VPP	//Sets the output amplitude to
	5 Vpp.
-> VOLT:OFFS 0	//Sets the output offset to 0.
-> AM:INT:FUNC SIN	//Changes the modulating
	waveform shape to Sine wave.
-> AM:INT:FREQ 500	//Changes the modulating
	frequency to 500 Hz.
-> AM:DEPT 50	//Changes the modulation depth
	to 50%.
-> OUTP ON	//Turns on output.

54	U2761A User’s Guide

Image 72

Agilent Technologies U2761A manual Generate AM Using Scpi Commands

Contents

User’s Guide U T I O N WA R N I N G Safety Symbols Instrument Use the device with the cables providedPerformed by qualified personnels Environment Conditions Regulatory Markings Product Category Affixed product label is shown as belowDeclaration of Conformity Regulatory Information for Australia/New Zealand This Guide… Contents Output Control Sweep Time Index List of Figures Trigger output pulse List of Tables Xviii Getting Started Various features of the U2761A IntroductionProduct at a Glance Product OutlookTop View BumpersFan Ventilation Pin backplane connector USB inlet Power inletFront View Rear ViewProduct Dimensions Dimensions Without Bumpers105.00 mm 175.00 mm 18.00 mm 25.00 mmDimensions With Bumpers 117.00 mm 180.00 mm 15.00 mm41.00 mm Standard Purchase Items Inspection and Maintenance General MaintenanceInitial Inspection Electrical CheckInstallation and Configuration InstallationWith Agilent VEE Pro, LabVIEW, or Microsoft Visual Studio Check Your System Hard-disk space 1 GBInstall the IO Libraries Suite Install the Module Driver Install the Agilent Measurement Manager T E Connect the Module to Your PC ProceedingGetting Started Select Ignore to disable the warning message Go to Start Control Panel and double-clickSystemGetting Started Verify Your Module Connection Send Commands To This Instrument IO Control will launch automatically when you start your PC Launch Your Agilent Measurement ManagerT E Pin Backplane Connector Pin Configuration DescriptionChassis Installation Pulse Waveform TriggeringOutput Configuration IntroductionOutput Function 1Output functionsFunction Limitation Amplitude LimitationSoft Front Panel Operation Waveform pattern selection Waveform parametersOutput Frequency Remote Interface Operation2Output frequency range Function Limitations Duty Cycle LimitationsOutput Amplitude Offset Voltage LimitationsLimits Due to Output Termination Limits Due to Units Selection 4Panel view of the amplitude sectionDC Offset Voltage Limits Due to AmplitudeVOLTageOFFSet offset Output Units Output Termination OUTPutLOAD ohmsINFinity Duty Cycle Square Waves Duty CycleLimits Due to Frequency APPLy command automatically sets the duty cycle to 50% Symmetry Ramp Wave 9Ramp wave duty cyclesOutput Control 11Panel view of the output sectionSet Output Using Scpi Commands Example 1, To output a DC voltageExample 2, To output a Sine wave Example 4, To output a Ramp wave Pulse Waveform Pulse PeriodPulse Width 13Panel view of the pulse width sectionPulse Duty Cycle Duty Cycle = 100 ⋅ Pulse Width / PeriodGenerate Pulse Waveform Using Scpi Commands ExampleAmplitude Modulation AM To Select AMModulating frequency AM depth Carrier Waveform 15Panel view of AMCarrier Frequency 3Carrier frequency for AMDefault modulating waveform is Sine wave Modulating WaveformModulating Waveform Frequency Modulation DepthPeak into a 50 Ω load Generate AM Using Scpi Commands Frequency Modulation FM To Select FMModulating frequency FM deviation FMSTATe 0OFF1ON 4Carrier frequency for FM FMINTernalFUNCtion SINusoidSQUareRAMPNRAMpTRIangleUSER Frequency Deviation Generate FM Using Scpi Commands Phase Modulation PM Modulating frequency Phase deviationTo Select PM PMSTATe 0OFF1ON 5Carrier frequency for PM Default waveform is Sine wave Phase Deviation Generate PM Using Scpi CommandsFrequency-Shift Keying FSK Modulation To Select FSK ModulationFSK rate Hop frequency FSKeySTATe 0OFF1ON FSK Carrier Frequency 6Carrier frequency for FSKFSK Hop Frequency 7Hop frequencyGenerate FSK Modulation Using Scpi Commands FSK RatePhase-Shift Keying PSK Modulation To Select PSK ModulationPSK rate PSK deviation PSKeySTATe 0OFF1ON PSK Carrier Frequency 8Carrier frequency for PSKPSK Rate PSK DeviationGenerate PSK Modulation Using Scpi Commands Amplitude-Shift Keying ASK Modulation To Select ASK ModulationASK rate ASKeySTATe 0OFF1ON 9Carrier frequency for ASK Generate ASK Modulation Using Scpi Commands ASK RateFrequency Sweep To Select SweepFrequency Linear type Start frequency Stop frequency Start Frequency and Stop Frequency 28Panel view of sweepSweep Mode Sweep TimeSweep Trigger Source Set Frequency Sweep Using Scpi Commands Triggering Trigger Source ChoicesInternal Triggering Manual TriggeringExternal Triggering Trigger Input Signal Trigger Output SignalTrigger Rising edge shown Trigger out 500 μs Rising edge shownOUTPutTRIGger 0OFF1ON OUTPutTRIGgerSLOPe POSitiveNEGative Set Triggering Using Scpi Commands Arbitrary Waveforms To Create and Store an Arbitrary WaveformSelect the Arbitrary waveform function Start waveform editing process Exiting the waveform editor Characteristics and Specifications Product Characteristics Operating EnvironmentProduct Specifications and Characteristics WaveformsRamp, Triangle Units Vpp, Vrms, dBm Resolution Digits External frequency reference±1% of settling ±5 mV ±10 mV @ Hi-Z ±5 V across open circuitModulation Sweep Characteristics 102 U2761A User’s Guide Index PSK United States Tel 800 829