Hi,
I'm new to VISA and GPIB and am having trouble with taking readings from our instrument, the Picowatt AVS-47B resistance bridge, which connects to the PC via a AVS47-IB computer interface.
I've customized the examples in the drivers provided to make 3 separate VI's which
The drivers are those found on the NI site, but I've also downloaded the updated versions from the manufacturer's website here:
http://www.picowatt.fi/index1.html
The 3 VIs are built to be run as sub-VIs but can also be run in standalone mode consecutively:
1) init sgl ch.vi - to initialize the instrument settings, channels etc.
2) read sgl ch.vi - read the instrument
3) close.vi - close the connection and zero the settings
The program initializes fine and closes fine, but when it goes to read the instrument, it times out in the AVS47IB Wait for OPC/MAV/TMO.vi before I can get any readings.
I've tried a few things such as extending the timeout, increasing the delay, but hadn't had any luck.
The code used to work without problems at the end of last year but after a long absence it's no longer working even though nothing in the setup has changed between now and then.
Is there anything to look out for or test in particular? Andis there anything that's missing in the code or the structure which could be improved to make it more robust for future use?
Any help would be most appreciated!
Denigmaz.
