This example performs a Source Power Cal using ONE USB Power Sensor, already connected to the VNA.
A measurement must first be set up with desired frequency range, power, and so forth, ready to be calibrated.
The SCPI commands in this example are sent over a COM interface using the SCPIStringParser object. You do NOT need a GPIB connection to run this example.
This VBScript (*.vbs) program can be run as a macro in the VNA. To do this, copy the following code into a text editor file, such as Notepad, and save it on the VNA hard drive as spc.vbs.
Learn how to setup and run the macro.
See Source Power Cal SCPI commands
See Other SCPI Example Programs
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'Performs a source power cal on channel 1 - port 1 using a USB power sensor 'This example assumes ONE USB power sensor is connected to the VNA Dim app Dim scpi Dim sensor ' Create / Get the VNA application. Set app = CreateObject("AgilentPNA835x.Application") Set scpi = app.ScpiStringParser scpi.parse "SYST:PRES" 'set power accuracy tolerance and iterations scpi.parse "SOUR1:POW1:CORR:COLL:ITER:NTOL 0.1" scpi.parse "SOUR1:POW1:CORR:COLL:ITER:COUN 15" 'set power sensor settling tolerance scpi.parse "SOUR1:POW1:CORR:COLL:AVER:NTOL 0.1" scpi.parse "SOUR1::POW1:CORR:COLL:AVER:COUN 15" 'set offset value for amp or attenuation scpi.parse "SOUR1:POW1:CORR:OFFS 0 DB" 'show source power cal dialog scpi.parse "SOUR1:POW1:CORR:COLL:DISP ON" 'read the usb power sensor ID string sensor=scpi.parse("SYST:COMM:USB:PMET:CAT?") 'specify that sensor scpi.parse "SYST:COMM:PSEN usb," + sensor 'do the measurement scpi.parse "SOUR1:POW1:CORR:COLL:ACQ PMR,"ASENSOR"" 'save the source cal and create an R-Channel response calset scpi.parse "SOUR:POW:CORR:COLL:SAVE RREC" |