PXI-4070 won't communicate

[lockheed_eng]

I bought a spare PXI-4070 for my tester.  The new unit will not communicate with my system which uses the NI DMM 2.2 drivers - but the one that is currently in the tester doesn't have a problem with it.  I suspect that the new unit has a higher firmware revision which requires the higher version of DMM drivers.

Is this truly the case?  and if so, why in the world would a company upgrade firmware of a hardware unit that isn't backwards compatible???

[ManLongAtNI]

Hello Reese,

I've verified that the firmware has been updated on the device. Can you provide the part numbers of the hardware and the error you are seeing so that I can confirm the behaviour is relative to the firmware?

Regards,

Glenn

Applications Engineer

National Instruments