I am using NI PCI-GPIB card to communicate with HP4191A. But I can not communicate with the instrument.
1. I started NI488.2 troubleshooting wizard. It says NI488.2 software presence verified, GPIB hardware presence verified,GPIB interfaces sequentially verified. This means Card is alright?
2. I scanned for the instrument, and the instrument is found and the adress is right.
3. I use the interactive communication, there is error, said "OLd VISA is opened". I do not know why?
Is there anyone who knows it? I apprepriate for your help. Big thanks.