control instrument VNA

[srh92]

I'm trying to drive old vna (vector network analyser) equipment. I have problem when I put logarithmic scale I lose control of the instrument during the second acquisition of data. I can't understand the relationship between losing control of the equipment and the scale. Does someone have an idea?

[cstorey]

Not much info to go on here! 

Post the code and the errors you get..otherwise hard to guess.

Also important..

- what model VNA?

- What version of LabVIEW?

- What OS?

- Are you using a software driver downloaded from NI, vendor? (link!)

-How are you physically connecting PC to instrument? (USB, RS232, GPIB, LAN)

Detailed questions are more likely to lead to a solution.