Common Earth or Seperate

h2oil · Post by **h2oil** » 23 Jan 2020, 16:49

Is it ok to Earth the AIO module along with the RevPi Connect on same earth as a 220-24VDC transformer?

Just want to check no signal noise for mA reading will be made

Thanks

Post by **dirk** » 24 Jan 2020, 15:30

Hi h2oil, this is a question that I have to ask in the hardware department.

Post by **dirk** » 27 Jan 2020, 16:13

Hi, to make it short - you can use a common ground for the AIO and your power supply. It depends on your measuerement accuracy requirements. In case you want mV accuracy the line resistance i.e. may be involved here.