FAQs from Rohde & Schwarz

HMS-X Remote Control using receiver mode

Description

I want to use the receiver mode of the HMS-X via remote control.
Unfortunately the manual only describes how to change to the Rx Mode, but there are no detail informations available about setting

  • Frequency
  • Detector
  • Measurement time
  • Step width and moving in these steps
  • CISPR-Bandwidth
  • Demodulation (Audio Output)

Can you please provide these details?

Resolution

The following information is available (extraction from the attached Python script):

***
#
# Important!
# Rx mode is not completely documented in the manual.
# A complete command list can be requested by querying "SYSTEM:TREE?"
#

Instrument.write_str_with_opc('SYST:MODE RMOD') # Change over to Rx mode
Instrument.write_str_with_opc('RMOD:DET PEAK') # Set Rx mode detector --> Possible values: PEAK, AVG, QPEAK, RMS
Instrument.write_str_with_opc('RMOD:MTIM 0.5') # Rx mode measurement time in seconds (can not be set for QPEAK)
Instrument.write_str_with_opc('RMOD:FREQ 100 MHz') # Set receiver frequency
Instrument.write_str_with_opc('RMOD:FREQ:STEP 100000') # Set step width for Rx mode (will only help for manual purposes.
# Rather use RMOD:FREQ for a scan.
Instrument.write_str_with_opc('Band:RBW C120K') # Set bandwidth to CISPR 120 kHz
# --> Possible values: 100 / 300 Hz, 1 / 3 / 10 / 30 / 100 / 200 / 300 kHz,
# 1 MHz, C200, C9K, C120K, C1M
sleep(1)
#
# Important!
# While demodulation is switched on, measurement will not take place.
#
#Instrument.write_str_with_opc('RMOD:AUD:DEM ON') # Switch on demodulation (headphone port) --> Possible values: ON, OFF
#Instrument.write_str_with_opc('RMOD:AUD:MOD FM') # Change demod to FM --> Possible values: AM, FM
#Instrument.write_str_with_opc('RMOD:AUD:VOL 50') # Adjust audio volume for headphone port --> possible values: 0-100

***

Name
Type
Version
Date
Size
HMS_X_Measure_Rx_Mode.py
Type
FAQ
Version
Date
03-Feb-2022
Size
5 kB