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Chapter 3 Features and Functions
Burst Mode
3
Burst Trigger Source
In the triggered burst mode, the waveform generator outputs a burst
with the specified number of cycles (burst count) each time a trigger is
received. After the specified number of cycles have been output,
the waveform generator stops and waits for the next trigger. At power-
on, the internally-triggered burst mode is enabled.
• Burst trigger source: Internal (default), External, Timer, or Manual.
• When the Internal (immediate) source is selected,
the frequency
at
which the burst is generated is determined by the burst period.
• When the External source is selected, the waveform generator will
accept a hardware trigger applied to the rear-panel Ext Trig
connector. The waveform generator outputs the specified number of
cycles each time Ext Trig receives a TTL pulse with the specified
polarity. External trigger signals that occur during a burst are
ignored.
• When the Manual source is selected, the waveform generator outputs
one burst each time the front-panel
key is pressed or the *TRG
command is issued.
• When the External or Manual trigger source is selected, the burst
count and burst phase remain in effect but the burst period is ignored.
• When the Timer trigger source is selected, the instrument uses a 50%
duty cycle trigger output.
• Front-Panel Operation:Press
,
the Trigger Setup softkey and
then select the source by pressing the Trg Src softkey.
To specify whether the waveform generator triggers on the rising or
falling edge of the signal on the Ext Trig connector, press the
Trigger Setup softkey. Then select the desired edge direction with
the Slope softkey.
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