This requirement comes from the main client of the card (CERN TE-ABT).
The reasons are:
- The module currently used in the installation has a shared output
counter (so it is not possible to have independent outputs), and the
Fine Delay is intended as its replacement.
- If all channels will be made independent, it could be that some
outputs could send out less pulses than others (when the input T is
lower than the set delay time for that channel).
Note that this limitation does not apply when the card is configured in
Pulse Generator mode.