DC-Coupling possible on MCC172 ?

[Martin Wollatz]

We have some applications where we need to record two channels. The MCC172 board is ideal here, but we rely on a DC coupling. Would it be possible to achieve DC coupling with this board? I'm hoping that only a high pass could be bridged in the analogue part. Since no schematic is shared it is impossible to determine.

[Martin Wollatz]

I bought an MCC172 and looked at the input circuitry. As I suspected, there is a high pass built in, but it is even equipped with jumpers to bypass the high pass capacitor. The component values, even if they are measured within the circuit, result almost exactly in the cutoff frequency specified in the data sheet. For DC coupling, simply close the jumper (circled in green).

mcc172 analog.bmp

[Fausto]

Hello @Martin Wollatz.

The MCC 172 only supports AC coupling, no DC coupling support.

Regards,

Fausto