Each input channel’s source and sink load currents can be set programmatically.
The input channel’s current load provides a constant current load that is active when the input voltage is above or below the high voltage or low voltage clamp values respectively. The input channel’s constant current source value can be set from 0mA to 24mA with 0.3662 μA of resolution.
With independent high and low clamping (commutating) voltages, the source and sink currents each have their own threshold voltage. If the voltage on the input, when the load is activated, is between the two clamping voltages, the load will remain in a high impedance state.
The input channel’s source and sink constant currents can be read back and set dynamically at any time even when the DIO is in its run state.