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Sunday, 25 February 2018

VMA Simple Spectrum Analyser for Rohde & Schwarz CRTU (works with CMU200, as well)


This picture says it all:

I just ported my "VMA Simple Spectrum Analyser" software for the Rohde & Schwarz CRTU!

It should work fine on the Rohde & Schwarz CMU200, as well, since it is the same base device.

Everything is working fine at this point, however, you need the following pre-requisites to get the software working:

  • You need a CRTU or CMU200 (of course)...
  • You need to have OPSW v5.x installed and activated
  • You need to install Keysight Instrument Control
  • You need to setup a GPIB to USB interface for fast spectrum refresh rate
  • Alternatively, you can use a RS232 connection setup at 115200 baud

  • This is still an early beta version. There are bugs and the software may not work for you.
  • A license is required. Run the program and follow the license assistant to generate a System Code. Send it to me (vma AT norcam DOT pt), you will receive a temporary Activation Code.

The following has NOT been tested:
  • Connection through GPIB-USB interface: I am waiting to receive mine...
  • CMU200: I only own two CRTU
  • Connection of a GPS receiver: should work, but obviously may not use the same COM port as the CRTU/CMU200
Please note the following:
  • If you set RBW too low, making a sweep take longer than the RS232 timeout, an error will happen. You may need to exit the software and open it again.
  • When the software crashes, it can happen, that the CRTU gets stuck on REMOTE mode. Restart the software, click on START and then on STOP to free the CRTU.

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