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SCOM-100, User guide 14
2.4.2 Analog input 2
Analog input 2 is designed as a current input.
It can be used in conjunction with industry standard
current loop transducers & sensors. Input impedance is
50Ω. The 0-20mA input is converted internally to a digital
raw range of 0-4095.
Note: Applying a voltage source to the current input AI2
may damage the internal 50Ω input resistor and
respectively the entire input circuit.