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Is there a Firmware Update available to make the E1412A work with NI-VISA v2.5 or Higher Event Handling?

At this time, there is no firmware update available for the E1412A to allow it to work with NI-VISA v2.5 or higher.

The case described in the FAQ at http://digital.ni.com/public.nsf/allkb/126d5c7a0a9e5c8186256c17005b66ff, 

occurs when the VISA implementation turns on VISA Event Handling in addition to the reads and write to communicate with the E1412A. The work-around is to disable or turn off Event Handling when preparing to read from the DMM. The above FAQ at ni.com provides detailed information on implementing this work-around.