phantom voltage spikes in buffer mcc118 about daqhats HOT 2 CLOSED

Hello mwaltz,

MCC has received no other reports of this phenomenon.

I recommend you ground the inputs of all channels you are using in your apps and then run your script(s).
With the inputs grounded, do you still see the spike(s)?

Also I recommend you run the data_logger example. Again, keep your inputs grounded. Should you need assistance building the example, please read the instructions in the readme.md.

I am not sure how to interpret your graph. The analog inputs of the MCC 118 have a max voltage range of +/-10 VDC. Your graph shows your spikes with an amplitude of > ~290 Volts(?) and higher.

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Hi jeffreyg3,

The issue was coming from a pwm signal that we were using on the raspberry pi. After removing this signal, we have no more spikes. If I had to guess, there were problems with the power quality on the raspberry pi. Thanks for your help.

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