**Category:**Software

**Product Number:**AD5941

Hi, I'm looking to measure open-circuit current noise for EIS using the AD5941. Can you please confirm if the following methods are correct?

My protocol is to run a two-wire setup for a known resistor across SE, RE, and CE.

I run an EIS measurement at a set frequency and set RTIA, and then obtain the DFT values of that known resistor. From there, I use the following equation:

Is that equation correct for calculating the I_RMS using the DFT? I know that I don't need to measure RCAL since I'm only measuring current, but I wanted to ask to make sure.

Lastly, is the theoretical value for the I_RMS equivalent to the AC Voltage RMS divided by the sum of the known resistor and the 100 Ohms in series with SE?

Thank you!

Added AD5941 to title.

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**edited by:**kbaudue at 3:31 PM (GMT -5) on 6 Feb 2024]