When the DSI-20mA adaptor is connected to a device the amplifier will change its setup to current mode only, then it is hard to see what is going on in the background.


On the picture below is the basic setting for the channel that is read from the adaptors TEDS chip:


When you change the ''Input type'' there are no visible changes.


Best to show it is here:
Set amplifier to Current measurement.

The direct shunt is for measuring current, on a sensor that has its own power supply and has current outputs.

Loop-powered shunt provides power supply to the sensor and measures current output at the same time.