NIRStar 14.1 - User Manual
Page 42 of 124
2) Pulse Sequence
This digital I/O mode allows the user to generate finite pulse sequences. Available parameters are:
Use: Activate this channel to generate a pulse sequence. If activated, any Start Marker in this channel will
be deactivated.
Mode: Select one of the following modes:
- Off: Inactive
- Pulse hi: Create train of high pulses
- Pulse lo: Create train of low pulses
- Set hi: Output goes hi after
specified delay
- Set lo: Output goes low after
specified delay
Start delay: defines the beginning of a
pulse train or level change after scan start
Pulse length: Duration of [high|low] period
for ‘Pulse [hi|lo]’
Rep. Interval: Pulse-to-pulse time. Must be at least as long as the ‘Pulse length’
No. of Reps.: Number of pulse steps (repetitions), after which the pulse train will stop.
3) Stop Marker
This digital I/O mode is used to create markers at the end of a scan. Available parameters are:
Use: Activate this channel to generate a Stop Marker.
Mode: Select one of the following modes:
- Off: Inactive
- Pulse hi: create single high pulse
- Pulse lo: Create single low pulse
- Set hi: Output goes hi at start
- Set lo: Output goes low at start.
Pulse length: Set the length of Pulse Hi or Pulse Lo (otherwise ignored)
Figure 26. Pulse sequence section of the Digital I/O interface
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