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Agilent Technologies U2761A manual Generate PSK Modulation Using SCPI Commands, Example

Models: U2761A

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Page 93

Features and Functions

Generate PSK Modulation 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.
-> PSK:STAT ON	//Enables PSK modulation.
-> FUNC SIN	//Sets the carrier waveform to
	Sine wave.
-> FREQ 1000	//Sets the carrier frequency to
	1 kHz.
-> VOLT 5 VPP	//Sets the output amplitude to
	5 Vpp.
-> VOLT:OFFS 0	//Sets the output offset to 0.
-> PSK:INT:RATE 10	//Sets the PSK rate to
	10 Hz.
-> PSK:DEV 180	//Sets the PSK deviation to
	180 °.
-> OUTP ON	//Turns on output.

U2761A User’s Guide

Page 93

Image 93

Agilent Technologies manual Generate PSK Modulation Using SCPI Commands, Example, U2761A User’s Guide

Contents

Agilent U2761A USB Modular Function/Arbitrary Waveform Generator User’s GuideAgilent Technologies Safety Notices WarrantyNotices C A U T I O NU2761A User’s Guide Safety SymbolsWARN IN G General Safety InformationC A U T I O N Do not operate the product in an explosive atmosphere or in theEnvironment Conditions RequirementsU2761A User’s Guide Regulatory Markings Waste Electrical and Electronic Equipment WEEE Directive 2002/96/EC Do not dispose in domestic household wasteU2761A User’s Guide VIII Declaration of ConformityU2761A User’s Guide StandardAdditional Information U2761A User’s Guide1Performance Criteria Regulatory Information for Canada3 Characteristics and Specifications 2 Features and FunctionsIn This Guide… 1 Getting StartedInstallation ContentsChassis Installation XVIIFeatures and Functions ContentsPhase Deviation Phase Modulation PMContents To Select PMIndex Product Specifications and CharacteristicsContents 3 Characteristics and SpecificationsAM waveform List of FiguresFM waveform PM waveformU2761A User’s Guide List of Tables Table 1-1 Synchronous Simultaneous Interface SSI connectorU2761A User’s Guide Carrier frequency for PSKU2761A User’s Guide XVIIIGetting Started Agilent TechnologiesAgilent U2761A USB Modular Function Generator User’s Guide Various features of the U2761A Introduction1 Getting Started Product Outlook Product at a GlanceTop View U2761A User’s GuideRear View Front ViewUSB indicator Power indicator 10 MHz reference connector Trigger in connector Output connector Trigger out connectorDimensions Without Bumpers Product DimensionsTop View Front ViewTop View Dimensions With BumpersFront View 1 Getting StartedU2761A User’s Guide Standard Purchase ItemsGeneral Maintenance Inspection and MaintenanceInitial Inspection Electrical CheckInstallation Installation and ConfigurationN O TE U2761A User’s GuideA. Check Your System 1 Getting StartedHard-disk space 1 GB N O TE B. Install the IO Libraries SuiteN O TE U2761A User’s GuideC. Install the Module Driver N O TE1 Getting Started U2761A User’s Guide D. Install the Agilent Measurement ManagerN O TE 1 Getting Started10 Fill in the Customer Information Form accordingly and click Next N O TE E. Connect the Module to Your PCYes, this time only and click Next to proceed U2761A User’s GuideU2761A User’s Guide 1 Getting StartedN O TE Select Ignore to disable the warning messagefollow the instructions below Go to Start Control Panel and double-click System8 The Assign USB device alias window will appear. Each time the U2761A is plugged in, this dialog box will appear. To 1 Getting StartedF. Verify Your Module Connection N O TEU2761A User’s Guide 1 Getting Started Send Commands To This InstrumentN O TE G. Launch Your Agilent Measurement ManagerDouble-click the Measurement Manager software icon on softwareN O TE For more information on how to use the Measurement Manager, refer to1 Getting Started the Agilent Measurement Manager help fileSSI timing signal 55-Pin Backplane Connector Pin ConfigurationU2761A User’s Guide Getting Started1 Getting Started Chassis InstallationOutput Configuration Features and FunctionsPhase Modulation PM Phase-Shift Keying PSK ModulationIntroduction Output ConfigurationOutput Function 2 Features and FunctionsFunction Limitation Amplitude LimitationU2761A User’s Guide 2 Features and Functions Soft Front Panel OperationWaveform pattern selection Waveform parameters Figure 2-1 U2761A soft front panelOutput Frequency Remote Interface OperationU2761A User’s Guide Duty Cycle Limitations Function Limitations2 Features and Functions Soft Front Panel OperationOffset Voltage Limitations Output AmplitudeLimits Due to Output Termination The default amplitude is 1 Vpp into 50 Ω for all functions2 Features and Functions Limits Due to Units SelectionSoft Front Panel Operation Figure 2-4 Panel view of the amplitude sectionLimits Due to Amplitude DC Offset VoltageThe default offset is 0 V for all functions Remote Interface OperationSoft Front Panel Operation 2 Features and FunctionsRemote Interface Operation Figure 2-5 Panel view of the DC offset sectionSoft Front Panel Operation Output UnitsRemote Interface Operation VOLTageUNIT VPPVRMSDBM2 Features and Functions Output TerminationRemote Interface Operation Soft Front Panel OperationFigure 2-6 Panel view of the Tools menu U2761A User’s GuideDuty Cycle Duty Cycle Square WavesLimits Due to Frequency 2 Features and FunctionsRemote Interface Operation Soft Front Panel OperationFigure 2-8 Panel view of the duty cycle section U2761A User’s Guide2 Features and Functions Symmetry Ramp WaveSoft Front Panel Operation 0% SymmetryRemote Interface Operation Output ControlSoft Front Panel Operation Figure 2-11 Panel view of the output section2 Features and Functions Set Output Using SCPI CommandsRemote Interface Operation Example 1, To output a DC voltageExample 2, To output a Sine wave Example 3, To output a Square waveU2761A User’s Guide Example 4, To output a Ramp wave 2 Features and FunctionsPulse Period Pulse WaveformSoft Front Panel Operation Remote Interface Operation2 Features and Functions Pulse WidthSoft Front Panel Operation Remote Interface OperationSoft Front Panel Operation Pulse Duty CycleRemote Interface Operation Duty Cycle = 100 ⋅ Pulse Width / PeriodGenerate Pulse Waveform Using SCPI Commands 2 Features and FunctionsExample Amplitude Modulation AM To Select AMU2761A User’s Guide 2 Features and Functions Carrier WaveformSoft Front Panel Operation Remote Interface OperationRemote Interface Operation Carrier FrequencyFigure 2-16 Panel view of the Arbitrary waveform Table 2-3 Carrier frequency for AM2 Features and Functions Modulating WaveformThe default modulating waveform is Sine wave Soft Front Panel OperationModulation Depth Modulating Waveform Frequencydefault modulation depth is 100% N O TEGenerate AM Using SCPI Commands 2 Features and FunctionsExample Frequency Modulation FM To Select FMU2761A User’s Guide Carrier Waveform 2 Features and FunctionsSoft Front Panel Operation Remote Interface OperationRemote Interface Operation Carrier FrequencyTable 2-4 Carrier frequency for FM U2761A User’s GuideModulating Waveform 2 Features and FunctionsSoft Front Panel Operation Remote Interface OperationModulating Waveform Frequency Frequency DeviationSoft Front Panel Operation Remote Interface Operation2 Features and Functions Generate FM Using SCPI CommandsSoft Front Panel Operation Remote Interface OperationPhase Modulation PM To Select PMU2761A User’s Guide Carrier Waveform 2 Features and FunctionsSoft Front Panel Operation Remote Interface OperationRemote Interface Operation Carrier FrequencySoft Front Panel Operation Remote Interface OperationThe default waveform is Sine wave 2 Features and FunctionsModulating Waveform Modulating Waveform FrequencyGenerate PM Using SCPI Commands Phase Deviation0 to 360 . The default phase deviation setting is Soft Front Panel OperationFrequency-Shift Keying FSK Modulation To Select FSK Modulation2 Features and Functions Soft Front Panel Operation Carrier WaveformRemote Interface Operation Soft Front Panel Operation2 Features and Functions FSK Carrier FrequencyRemote Interface Operation Soft Front Panel OperationSoft Front Panel Operation FSK “Hop” FrequencyRemote Interface Operation frequency is 100 Hz for all functionsFSK Rate Generate FSK Modulation Using SCPI Commands2 Features and Functions Soft Front Panel OperationPhase-Shift Keying PSK Modulation To Select PSK ModulationU2761A User’s Guide Carrier Waveform 2 Features and FunctionsSoft Front Panel Operation Remote Interface OperationRemote Interface Operation PSK Carrier FrequencySoft Front Panel Operation Remote Interface OperationPSK Deviation PSK Rate2 Features and Functions Soft Front Panel OperationGenerate PSK Modulation Using SCPI Commands ExampleU2761A User’s Guide Amplitude-Shift Keying ASK Modulation To Select ASK Modulation2 Features and Functions Soft Front Panel Operation Carrier WaveformRemote Interface Operation Soft Front Panel OperationCarrier Frequency 2 Features and FunctionsRemote Interface Operation Soft Front Panel OperationASK Rate Generate ASK Modulation Using SCPI CommandsSoft Front Panel Operation Remote Interface OperationTo Select Sweep Frequency Sweep2 Features and Functions Soft Front Panel OperationRemote Interface Operation Start Frequency and Stop FrequencySoft Front Panel Operation Figure 2-28 Panel view of sweepSweep Time Sweep Mode2 Features and Functions Remote Interface OperationSoft Front Panel Operation Sweep Trigger SourceRemote Interface Operation Soft Front Panel Operation2 Features and Functions Set Frequency Sweep Using SCPI CommandsRemote Interface Operation ExampleTrigger Source Choices TriggeringSoft Front Panel Operation U2761A User’s GuideManual Triggering Internal Triggering2 Features and Functions Remote Interface OperationRemote Interface Operation External TriggeringSoft Front Panel Operation Remote Interface OperationTrigger Output Signal Trigger Input Signal2 Features and Functions Trigger in Rising edge shown Figure 2-29 Trigger input pulseRemote Interface Operation Soft Front Panel Operationfalling edge, select Positive for rising edge and U2761A User’s GuideSet Triggering Using SCPI Commands 2 Features and FunctionsExample Arbitrary Waveforms To Create and Store an Arbitrary WaveformU2761A User’s Guide 1 Select the Arbitrary waveform function 2 Features and Functions2 Set the waveform period 3 Set the waveform voltage limits7 Sending waveform to the U2761A 6 Start waveform editing process8 Saving the waveform 9 Exiting the waveform editorU2761A User’s Guide 2 Features and FunctionsProduct Characteristics Product Specifications and Characteristics Characteristics and SpecificationsAgilent Technologies Agilent U2761A USB Modular Function Generator User’s Guide3 Characteristics and Specifications Product CharacteristicsPOWER CONSUMPTION SAFETY COMPLIANCEWAVEFORM CHARACTERISTICS Sine Product Specifications and CharacteristicsWAVEFORMS SquarePulse Ramp, TriangleArbitrary 3 Characteristics and SpecificationsDC offset COMMON CHARACTERISTICS AmplitudeMain output Internal frequency reference3 Characteristics and Specifications MODULATION AMTRIGGER CHARACTERISTICS Trigger input SWEEP CHARACTERISTICSTrigger output U2761A User’s GuideU2761A User’s Guide 3 Characteristics and SpecificationsU2761A User’s Guide Indexlimits phase noise PML-Mount kit 7 offset. Refer to DC offsetAgilent Technologies, Inc First Edition, April 30 U2761-90000