Digital Multimeters (DMMs) and Precision DC Sources

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Using PXI-4070, 'device's Serial Port would not reset' is a recurring error ...

Hi Alaini,

Sorry I forgot to attach the photo, please see the image below.  The area in red is where you will find the fuse of interest.  I agree given the intermittancy of the problem the fuse may not be the culprit but I think it would be a good troubleshooting step since it should be fairly easy to check.  Regarding the power outage, can you elaborate on this?  If there was a power surge on the system due to lightning or something else, then I would say it's possible that something could have become damaged during that period.  However, I think it's unlikely a simple removal of power would cause a failure even if the chassis was powered up at the time.

 

Can you think of any other hardware, software or environmental changes that occured when the problem first arose?

 

 

 

407x.jpg

 

 

 

Thanks,

 

Brandon G

National Instruments
Precision DC Hardware Engineer
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