Each analog input has a digital filter. The filter is a notch filter.

The filter is always active; it cannot be disabled. None of the "Enable Filter" parameters have any effect:
0x8000:06, 0x8010:06, 0x8020:06, 0x8030:06.

Configuring the filter

You can set the filter frequency in the parameter 0x8000:15 "Filter Settings". This parameter affects all channels. The "Filter Settings" parameters of the other channels have no effect:
0x8010:15, 0x8020:15, 0x8030:15.

Influence on the conversion time

The higher the filter frequency, the shorter the conversion time.