This VBScript example creates IM Spectrum measurement based on passed parameters.
This subprogram is extracted from the macro on the PNA that produces an IM spectrum channel from the Marker function. You can see the entire program at C:/Program Files/Keysight/Network Analyzer/Applications/IMD/IMD.VBS”.
This VBScript (*.vbs) program must be used as part of a program that supplies the required parameters. When complete, it can be run as a macro in the PNA. To do this, copy the following code into a text editor file such as Notepad and save it on the PNA hard drive as IMD.vbs.
Learn how to setup and run the macro.
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'' SetupIMSpectrum '' Setup an IM Spectrum (non-converter) channel based upon supplied parameters sub SetupIMSpectrum(app, MkrPos, ToneSpacing, TonePower) dim objIMXChan, objIMDChan dim Fstart, Fstop, NumPoints, ToneFc
set objIMXChan = objIMSChan.CustomChannelConfiguration set objIMDChan = objSIMDChan.CustomChannelConfiguration
NumPoints = objSIMDChan.NumberOfPoints select case objIMDChan.SweepType
case naIMDToneCWSweep ToneFc = objIMDChan.FrequencyCenter
case naIMDTonePowerSweep Fstart = objIMDChan.TonePowerStart(0) Fstop = objIMDChan.TonePowerStop(0) TonePower = CalcMkrValue(Fstart, Fstop, MkrPos, NumPoints) ToneFc = objIMDChan.FrequencyCenter
case naIMDToneCenterFreqSweep Fstart = objIMDChan.FrequencyCenterStart Fstop = objIMDChan.FrequencyCenterStop ToneFc = CalcMkrValue(Fstart, Fstop, MkrPos, NumPoints)
case naIMDDeltaFrequencySweep ToneFc = objIMDChan.FrequencyCenter Fstart = objIMDChan.DeltaFrequencyStart Fstop = objIMDChan.DeltaFrequencyStop ToneSpacing = CalcMkrValue(Fstart, Fstop, MkrPos, NumPoints)
case naIMDToneSegmentSweep ToneFc = MarkerXValue
end Select objIMXChan.FrequencyCenter = ToneFc objIMXChan.DeltaFrequency = ToneSpacing objIMXChan.TonePower(0) = TonePower objIMXChan.TonePower(1) = TonePower app.ActiveMeasurement.Trace.ReferenceValue = TonePower + 10 objIMSChan.continuous end Sub |