Create Modulation File

This example program creates a source modulation file for modulation distortion measurements.

This VBScript program can be run as a macro in the VNA. To do this, copy the code into a text editor file such as Notepad and save on the VNA hard drive as ModFile.vbs. Learn how to setup and run the macro.

See the Modulation Distortion commands.

See Other SCPI Example Programs

'Example code to create/edit modulation signals

set app = CreateObject("Agilentpna835x.application", "k-n5242b-81474")

set scpi = app.ScpiStringParser

' Preset and add a trace in Modulation Distortion channel

scpi.Parse "syst:fpr"

scpi.Parse("disp:wind1:stat on")

scpi.Parse("calc:cust:def 'ch1_PIn1','Modulation Distortion','PIn1'")

scpi.Parse "disp:wind1:trac1:feed 'ch1_PIn1'"

' Create an NPR Notch signal

scpi.Parse "sour:mod:file:type nprn"

scpi.Parse "sour:mod:file:sign:srat 200e6"

scpi.Parse "sour:mod:file:sign:span 100e6"

scpi.Parse "sour:mod:file:sign:span:pri 1"

scpi.parse "sour:mod:file:sign:tone:numb 1001"

scpi.parse "sour:mod:file:sign:tone:numb:pri 1"

scpi.Parse "sour:mod:file:sign:npr:notc:numb 1"

scpi.Parse "sour:mod:file:sign:npr:notc:loc cust"

scpi.Parse "sour:mod:file:sign:npr:notc1:span 10e6"

scpi.Parse "sour:mod:file:sign:npr:notc1:offs 0"

scpi.parse "sour:mod:file:save 'd:\symphony\scpi\npr.mdx'"

' Create compact signals

' Number of tones = 101/1001/10001

' Peak-to-avg priority: on/off

' Number of files = 5

' Original signal file: 5GNR_256QAM_120kHz_SCS_100MHz_122p88MHzSR.wfm

scpi.Parse "sour:mod:file:type comp"

infile = "5GNR_256QAM_120kHz_SCS_100MHz_122p88MHzSR"

scpi.parse "sour:mod:file:sign:comp:ofile 'd:\Symphony\scpi\" & infile & ".wfm'"

scpi.parse "sour:mod:file:sign:comp:file:numb 5"

scpi.parse "sour:mod:file:sign:tone:numb:pri 1"

for e = 2 to 4 '101/1001/10001

numTones = 10 ^ e + 1

scpi.parse "sour:mod:file:sign:tone:numb " & numTones

for i = 1 to 5

scpi.parse "sour:mod:file:sign:comp:pavg:pri 0"

scpi.parse "sour:mod:file:sign:comp:file:sel " & i

outfile = "d:\Symphony\scpi\" & infile & "_" & numTones & "_" & i

scpi.parse "sour:mod:file:save '" & outfile & ".mdx'"

scpi.parse "sour:mod:file:sign:comp:pavg:pri 1"

outfile = outfile & "p"

scpi.parse "sour:mod:file:save '" & outfile & ".mdx'"

' Create a flat tone signal

scpi.Parse "sour:mod:file:type flat"

scpi.Parse "sour:mod:file:sign:srat 200e6"

scpi.Parse "sour:mod:file:sign:span 100e6"

scpi.Parse "sour:mod:file:sign:span:pri 1"

scpi.parse "sour:mod:file:sign:tone:numb 1001"

scpi.parse "sour:mod:file:sign:tone:numb:pri 1"

scpi.parse "sour:mod:file:save 'd:\symphony\scpi\flat.mdx'"

' Edit a signal

scpi.parse "sour:mod:file:load 'd:\symphony\scpi\npr.mdx'"

scpi.parse "sour:mod:file:sign:tone:numb 2001"

scpi.parse "sour:mod:file:sign:tone:numb:pri 1"

scpi.Parse "sour:mod:file:sign:npr:notc1:offs 10e6"

scpi.parse "sour:mod:file:save 'd:\symphony\scpi\npr_2001tone_notch_offset_10M.mdx'"

msgbox "Done"