- Using 12 output pins from 2 ports B[0-7] and D[0-3].
- Input channel E1 receives a periodic timing signal from Thales Laser (10 Hz in case of UT3 system).
- Input channel E2 receives either a periodic or manual trigger signal. The duration of this pulse must be equal to or larger than the period of timing signal on E1. For example, if a periodic 10Hz signal is send to E1, E2 should receive a pulse with HIGH duration equal to or large than 100 milliseconds.

Important:
- Output ports B and D do not share timing delays.
- Output ports B is always on Delay channel 0.
- Output ports D is always on Delay channel 1.

These timing constraints will be improved in the next software release.