Analog Input: difference between AIS and AI?

[mkb]

UniPi neuron L513, and I'm using Mervis for programming. Group 2 and 3 analog inputs have three pins each. Eg for 2.1 you have: AIS2.1, AI2.1, and AGND. I can't find information anywhere about what this AIS pin is. Does anyone know?

[Martin Kudláček]

Hi @mkb,
the AI is for measuring voltage and current. The AIS is for measuring resistance. The resistor has to be connected between the AI and AIS.

Best regards,
Martin

[mkb]

@Martin-Kudláček Thank you, that clears it up.