Agilent 34970A Switch/DMM

[Skog Fredrik]

Hello!
I have a problem with Agilent's 34970A.
We have a testsystem consisting of Agilent 34401A DMM, Agilent 53131A
Counter and the troublesome Agilent 34970A.

I'm using VISA most of the time to control the 34970A, I say most of the
time because I have been forced to do the most strange programming to
make the program work. I have never noticed any problem with the other
instruments mentioned. But the 34970A can suddenly perform a reset,
switch itself off or just "freeze". Most of the time it is not possible
to turn it back on again without pulling the plug. I thought I had the
solution when I closed the VISA session in the middle of the program and
performed a reset on the instrument. I know it sounds strange but
somehow it wo
rked much better then. But now it seems like it needs more
to function properly. Have any of you guys ever heard of this kind of
problem or maybe you've got an idea on how to solve it?

Best regards
/Fredrik


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[RayFarmer]

Hi,

Do you get the same problems with more than one 34970A. Because this sounds like a hardware problem with your 34970A. Have you tried using NI-Spy to monitor the bus traffic.

I've had no problems driving the 34970A just using the basic NI driver. The unit was part of a system for a life test application and therefore was required to take a series of reading over a period of time.

Regard
Ray.

[RayFarmer]

Hi,

Do you get the same problems with more than one 34970A. Because this sounds like a hardware problem with your 34970A. Have you tried using NI-Spy to monitor the bus traffic.

I've had no problems driving the 34970A just using the basic NI driver. The unit was part of a system for a life test application and therefore was required to take a series of reading over a period of time.

Regard
Ray.