In Step Scan Mode, no data is acquired while the motors
move to the next position. For each motor position the signal is
measured for a specified (dwell) time.
The integrating nature of the detector necessitates to reset the
detector when starting to acquire data. Therefore a trigger must
be provided before and after the dwell period.
Consecutively, two data acquisition triggers are generated by the
detector, of which only the second one will be meaningful (since
the integration period during motor move is ill defined and will
probably be too long).
It needs to be investigated, how to deal with the two triggers.
One possibility could be to record both readings and later
disregard the first one.