13: LPT library function reference Model 4200A-SCS Parameter Analyzer
13-138 4200A-901-01 Rev. C / February 2017
pulse_burst_count
For the burst mode, this command sets the number of pulses to output during a burst sequence.
Usage
int pulse_burst_count(int instr_id, long chan, unsigned long count);
The instrument identification code of the pulse card, such as VPU1 or VPU2
Channel number of the pulse card: 1 or 2
Number of pulses to output: 1 to (2
-1); default 1
Pulse modes
Standard, Full Arb, Segment Arb
Details
Each channel of the pulse card can have a unique burst count. When a burst sequence is triggered,
the card outputs the specified number of pulses and then stops. The pulse_trig command is used
to start (or arm) the burst sequence (Burst or Trig Burst).
You can set burst count independently for each pulse card channel.
With an external trigger source selected, the burst count for channel 1 cannot be less than the burst
count for channel 2. Setting the burst count for channel 2 higher than the burst count for channel 1
may cause your system to stop responding when pulse output is triggered to start. Also, when using
one channel, set the unused channel to the same burst count value. See pulse_trig_source for
details on selecting an external trigger source.
Example
pulse_burst_count(VPU1, 1, 10)
Sets the burst count for the pulse card channel 1 to a count of 10.
Also see
pulse_trig (on page 13-152)
pulse_trig_source (on page 13-155)
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