GPIB analyzer

[jeffrz]

I am developing an application in which a diagnostic computer is attached to a system. The system has multiple GPIB devices. What I would like to do is monitor GPIB traffic and trigger events on the diagnostic computer. FOr example, if the main system tells a DMM to measure a voltage, I would like the diagnostic computer (containing an E-series DAQ card) to independently measure the voltage and the state of various I/O lines. The diagnostic application cannot depend on any re-programming of the main system. I had hoped the GPIB+ card would have a SDK allowing captured events to trigger actions, but apparently, that doesn't exist currently. Is there another solution for this application?

[Winston L]

The analyzer software will only allow you to monitor the state of the data and control lines. When set, the trigger will just acts as a reference point for recorded data.
There isn't a good way to coordinate GPIB and DAQ measurements. What you can do is poll the data or control lines in software, send out an active edge using DAQ, and use that to externally trigger the DAQ on your diagnostic computer. Be aware that this can't really be used in time critical applications.

Winston L.
Applications Engineer
National Instruments