Triggering Commands - Agilent Technologies 33220A User Manual

Triggering Commands

Applies to Sweep and Burst only. See also "Triggering" starting on
page 115 in chapter 3.
TRIGger:SOURce {IMMediate|EXTernal|BUS}
TRIGger:SOURce?
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 Trig In connector, or a software
(bus) trigger. The default is IMM. The :SOUR? query returns "IMM",
"EXT", or "BUS"
• When the Immediate (internal) source is selected, the function
generator outputs continuously when the sweep mode or burst mode
is enabled.
• When the External source is selected, the function generator will
accept a hardware trigger applied to the rear-panel Trig In connector.
The function generator initiates one sweep or outputs one burst each
time Trig In receives a TTL pulse with the edge polarity specified by
the TRIG:SLOP command (see page 232).
• When the Bus (software) source is selected, the function generator
initiates one sweep or outputs one burst each time a bus trigger
command is received. To trigger the function generator from the
remote interface (GPIB, USB, or LAN) when the Bus source selected,
send the *TRG (trigger) command. The front-panel
illuminated when the function generator is waiting for a bus trigger.
• The APPLy command automatically sets the trigger source to
Immediate (equivalent to TRIG:SOUR IMM command).
Chapter 4 Remote Interface Reference
Triggering Commands
4
key is
231