FAQs from Rohde & Schwarz

How to automatically transfer IQ-data from FSVR Spectrum Analyzer to VSE software

Question

This Python example shows how to transfer an IQ-data file from Spectrum Analyzer to the controller PC and open it with VSE signal analysis software.

For more information about remote control of Test & Measurement equipment, please refer to the instruments user manual and R&S website:

https://www.rohde-schwarz.com/driver-pages/remote-control/drivers-remote-control_110753.html

Answer

This Python example shows how to transfer an IQ-data file from Spectrum Analyzer to the controller PC and open it with VSE signal analysis software.

Tested with:

  • FSVR Real-Time Spectrum Analyzer (FW: 2.23 SP1)
  • VSE Software (1.70)
  • PyVISA 1.10.1

Author: R&S Support

Updated on 09.04.2020

Version: v1.2

Technical support -> https://www.rohde-schwarz.com/support
Before running, please always check this script for unsuitable setting !
This example does not claim to be complete. All information have been
compiled with care. However, errors can’t be ruled out.

import pyvisa

rm = pyvisa.ResourceManager()
# adjust the VISA Resource string to fit your instrument
instr = rm.open_resource('TCPIP::192.168.0.1::INSTR')
instr.timeout = 3000

vse = rm.open_resource('TCPIP::127.0.0.1::INSTR') # do not change localhost
vse.timeout = 3000

vse.write('*RST')
instr.write('*RST')
instr.write('*CLS')v

instr.write('INIT:CONT OFF')

print('\n' + instr.query('*IDN?'))

instr.write('FREQ:CENT 1e9')
instr.write('DISP:TRAC:Y:RLEV 0')
instr.write('TRAC1:IQ ON')
instr.write('TRAC1:IQ:SRAT 32 MHZ')
instr.write('TRAC1:IQ:RLEN 691') # Range: 1 ... 209715200(200*1024*1024)
instr.query('*OPC?')

filePathPc = r"c:\temp\data.iq.tar"
filePathInstr = r"c:\temp\dev_data.iq.tar"

instr.write('INIT')
instr.query('*OPC?'

# save IQ-data file on instrument hard drive
instr.write('MMEM:STOR:IQ:STAT 1, "{}"'.format(filePathInstr))

# ask for file data from instrument and save to local hard drive
fileData = instr.query_binary_values('MMEM:DATA? "{}"'.format(filePathInstr), datatype='s')[0]
newFile = open(filePathPc, "wb")
newFile.write(fileData)
newFile.close()

print(instr.query('SYST:ERR?'))

instr.close()

# load file into VSE software
vse.write('MMEM:LOAD:IQ:STAT 1, "{}"'.format(filePathPc))

vse.close()

Name
Type
Version
Date
Size
FSVR IQ-data-transfer
Type
FAQ
Version
Date
24-Mar-2020
Size
69 kB
FSVR IQ-data-transfer
Type
FAQ
Version
Date
24-Mar-2020
Size
1 kB

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