The BaseXIO option offers 8 asynchronous digital I/O lines on the base card. The direction can be selected by software in groups of four.

In addition one of the I/O lines can be used as reference clock for the Timestamp counter.

Together with the timestamp option there is one additional mode possible. When detecting a trigger event all 8 digital lines can be sampled and stored inside teh timestamp together with the time information. This allows to connect acquistions easily with external events.