NI MyDaq Analog input always returning error -201381

[Wouter.Sas]

Hi all,

I have a mydaq which always returns error 201381 on random timestamps (overcurrent protection kicked in) when trying to read any analog input (ai0/ai1). 

This is even the case when nothing is connected. Could it be the ADC is broken?

What could I do/test to try to resolve/pinpoint the issue?

thx

[wsimpson0050]

Could you please attach photo and/or the VI's you are referencing to the post? Also describe all the physical connection you have to your device with nothing plugged into the mydaq.  

[Bob_Schor]

A few suggestions:

• What version of LabVIEW (year and revision, bit-ness) and Windows are you using?
• MAX is your friend.  Open MAX, find your myDAQ, and open a Test Panel.
• Describe what is wired to what.  You say "ai0/ai1" -- what does this mean?
• Are you recording single-ended or differentially?  Describe what is connected to each Analog Input line (or say they are "floating in the breeze").
• What happens if you put a resistor (or, alternatively, a wire) across the two inputs you are using?  With a resistor, do you pick up A/C "noise" at 60 (or 50) Hz?

I have a myDAQ at home.  I can try it out this evening (if I remember).  I'll be using Windows 11 and LabVIEW 2024 64-bit.  [Oops -- it might not run with 64-bit LabVIEW ...].

Bob Schor