synchronising the HP8753 & HP8563E instrument drivers

[a.bellworthy]

Hi,

i am using the HP8753 & HP8563E instrument drivers to develop an autonomous test system that controls an Agilent 8720ES network analyser and an HP 8564E spectrum analyser.

The drivers are working well and im not having trouble with the visa communication, my problem is to do with the measurements the software is making. I need the HP 8564E to find the peak frequency at every 10mghz step that the 8720ES produces, instead of it just taking one measurement in the whole time the VI is running. 

Im a labVIEW amateur (just a heads up). Any contributions will be highly appreciated 🙂 

Please find attached two screenshots. one showing both drivers on one block diagram when i started, and another attachment showing one way i have tried to overcome my issue.

Thanks in advance!

Ace.

[SunshineDesign]

Your setup and measurement process is wrong. You need to have one loop to control the 8720 to each frequency step individually and then measure in the same loop with the 8564 the peak frequency. I would preposition the 856e to the same center freq as the 8720 wait a tad and then make the measurement. You also need to make sure the span is not to great and that the frequency accuracy of the 8564 is set to give the frequency resoultion you need. In your case you the the two processes working independantly. You current design will not work.

[a.bellworthy]

cheers, i will work with these suggestions