The error usually occurs when the DMM encounters a high frequency, common mode power or voltage spike.
To restore functionality, you can reset the DMM. This can either be done manually in Measurement & Automation Explorer (MAX), or programmatically by using the niDMM Reset
, or Read Multi Point
VIs. Alternatively, you may measure the transient using an oscilloscope rather than a DMM. Also you can try to remove the common mode transient by using low-pass filtering or a common-mode choke.
For a common-mode choke, the wires should be wrapped around the choke several times, and both leads from the DMM can be run through the same choke.
In this image, one of the DMM leads is shown as 1, and the choke is shown as 2.