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TRIGger
Issue an immediate trigger from the remote interface. This command can
trigger a sweep or burst with any available trigger source (TRIG:SOUR
command).
TRIGger:SOURce {IMMediate
︱
EXTernal
︱
BUS}
Specify a trigger source for the triggered burst mode only. The waveform
generator accepts a software (BUS) trigger, an immediate (internal) trigger, or
a hardware trigger from the rear-panel EXT TRIG connector. The default is IMM.
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When using the Immediate (internal) source, the frequency at which the
burst is generated is determined by the burst period.
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When using the External source, the waveform generator takes hardware
trigger from the
Trig In
connector on the rear panel.
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When using the Bus (software) trigger source, the waveform generator
outputs one burst each time it receives a bus trigger command. Use *TRG
to trigger from the remote interface. The
Trigger
button is lit when the
waveform generator is waiting for a trigger.
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The APPLY automatically sets the trigger source to be Immediate.
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When the External or the Bus source is selected, the burst count and the
burst phase remain in effect, but the burst period is ignored.
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To ensure synchronization when the Bus source is selected, send the *WAI
(wait) command. When the *WAI command is executed, the waveform
generator waits for all pending operations to complete before executing
any additional commands. For example, the following command string
guarantees that the first trigger is accepted and the operation is executed
before the second trigger is recognized.
TRIG:SOUR BUS;*TRG;*WAI;*TRG;*WAI
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You can use the *OPC? (operation complete query) command or the *OPC
(operation complete) command to signal when the burst is complete. The
*OPC? Command returns “1” to the output buffer when the burst is
complete. The *OPC command sets the “Operation Complete” bit (bit 0) in
the Standard Event register when the burst is complete.
TRIGger:SOURce?
Query the trigger source. “IMM” or “BUS” or “EXT” string indicating the trigger
