When the IEPE Excitation Is Disabled on an NI DSA Device

Updated Sep 15, 2022

Reported In

Driver

  • NI-DAQmx

Issue Details

I am using the IEPE excitation capability of an NI DSA device. During the use of the device, when will this excitation turn off?

Solution

Once enabled, IEPE excitation will remain on until explicitly disabled by setting the excitation value (lex) to 0 mA. Clearing a DAQmx task or closing an NI MAX Test Panel will not disable the excitation. The excitation is controlled by the DAQmx driver, so this will hold true regardless of the API being used to control the device.
 

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