AFR Using One Differential OPEN

This VBScript program performs AFR using one differential OPEN, saves the fixture data to a file, then performs deembedding.

Each VBScript (*.vbs) program can be run as a macro in the PNA. To do this, copy the code into a text editor file, such as Notepad, and save it on the PNA hard drive as *.vbs.

Learn how to setup and run the macro.

See Other SCPI Example Programs

Dim app
Dim scpi
Set app = CreateObject("AgilentPNA835x.Application")
Set scpi = app.ScpiStringParser

'The AOPen data file should alreay exist
aopenFile = "S:\case_07\AOpen.s2p"
'Fixture data file will be created or overwritten
fixaFile = "S:\case_07\_demo_fix_a.s4p"

'AFR extracts fixture files
scpi.Execute("AFR:FIXTure:INPuts DIFF")
scpi.Execute("AFR:FIXTure:MEASurement 2")
scpi.Execute("AFR:STANdard:USE AOP,ON")
scpi.Execute("AFR:STANdard:LOAD AOP," & Q(aopenFile))
scpi.Execute("AFR:SAVE:PORTs VNA")
scpi.Execute("AFR:SAVE:FILename " & Q(fixaFile))
opc = scpi.Execute("*OPC?")

' deembedding
scpi.Execute("CALC:FSIM:EMB:TYPE C")
scpi.Execute("CALC:FSIM:EMB:TOP:C:PORT 1,2,3,4")
scpi.Execute("CALC:FSIM:EMBed:NETWork1:FILename " & Q(fixaFile))
scpi.Execute("CALC:FSIM:EMBed:NETWork1:PMAP 1,2,3,4")
scpi.Execute("CALC:FSIM:EMBed:NETWork1:TYPE DEEMbed")
scpi.Execute("CALC:FSIM:EMBed:STATe ON")
scpi.Execute("CALC:FSIM:STATe ON")
opc = scpi.Execute("*OPC?")

Set scpi = Nothing
Set app = Nothing

'Add double quotation marks to a string
Function Q(s)
 Q = Chr(34) & s & Chr(34)
End Function