AnsweredAssumed Answered

undefined header response via GPIB

Question asked by ramon on Apr 22, 2009
Latest reply on Jun 28, 2013 by wannabegeek

Iam trying to communicate to a Keihley picoammeter 6485 via GPIB. I get error "undefined header" with *IDN? commend.

I am using a USB/GPIB coverter agilent 82357a addressed to GPIB0.
I am using VEE 7.0 with io libraries 15.0 (already tried with versions 14.2 and 15.1 and did not work).

The 6485 GPIB address is 14.

When I Send&Read the IDN command through Interactive IO utility (in Agilent connection Expert ) I get this:

        * Connected to: GPIB0::14::INSTR
        -> *IDN?
        ! VI_ERROR_TMO: A timeout occurred
        Visa ErrorCode: 0xBFFF0015 (-1073807339)

and error -113 (undefined header is showed in the display of the 6485)

Any suggestions about what is wrong?

Thanks, Ramon.