Triggering
See also “Triggering,” starting on page 98 in chapter 3.
Applies only to burst modulation and frequency sweep. You can issue
triggers for bursts and sweeps using an immediate trigger, an external
trigger, or a bus trigger.
TRIGger:SOURce {IMMediate|EXTernal|BUS}
Select the source from which the function generator will accept a
trigger. The function generator will accept an immediate internal
trigger, a hardware trigger from the rear-panel Ext Trig terminal,
or a software (bus) trigger. The default is Immediate.
[ Stored in volatile memory ]
When the Immediate (internal) source is selected, the function
generator outputs continuously when the burst mode or sweep mode
is enabled. The APPLy command automatically sets the trigger source
to IMMediate.
When the External source is selected, the function generator will
accept a hardware trigger applied to the rear-panel Ext Trig terminal.
The function generator outputs one burst or initiates one sweep each
time each time Ext Trig receives the rising edge of a
TTL pulse.
The
Trig annunciator turns on when the function generator is waiting
for an external trigger.
When the Bus (software) source is selected, the function generator
outputs one burst or initiates one sweep each time a bus trigger
command is received. To trigger the function generator from the
remote interface (
GPIB or RS-232), send the *TRG (trigger) command.
You can also trigger the function generator from the GPIB interface by
sending the IEEE-488 Group Execute Trigger (GET) message
(e.g., TRIGGER 710).
First-time
SCPI users,
see page 211.
Chapter 4 Remote Interface Reference
Triggering
186
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