Unipulse f395 Operation Manual page 60

・The minimum pulse width of START/STOP is Ts+0.8msec.
(Ts: 1-sampling interval. See "7-2. Sampling Rate" P40.)
・Operation when the STOP signal is input
- WAITL status cancel
If the STOP signal is input in WAITL status, the status is
forcedlyshifted to STOP status (sampling is not performed).
- WAIT2 status cancel
If the STOP signal is input in WAIT2 status, the status is shifted
as follows:
1. If the waveform has already crossed over the sampling start
level, the level edge is cancelled by the first STOP signal, and
the status is shifted to STOP status (sampling is not
performed) by the second STOP signal.
2. If the sampling start level has not been crossed, the status is
s h i ft e d t o S TO P s ta t u s ( s a m p l i n g i s n o t p e r f o r m e d )
immediately after the STOP signal is input.
After waveform capturing ends with the STOP signal or excess of
2048 points, etc., approximately 300msec or more are required until
the next START signal becomes acceptable.
9.Method of Starting Measurement
46