Agilent Technologies 53220A, User Manual

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150 53220A/53230A User’s Guide
5 Triggering and Gating
The system trigger is configured using the commands within the
TRIGger
and
SAMPle
subsystems. Figure 5-3 show the sequence in which the com-
mands are commonly used.
The system trigger source which starts the trigger/gate cycle is set with the
command:
TRIGger:SOURce {IMMediate|EXTernal|BUS}
TRIGger:SOURce? (query form)
- trigger source
IMMediate
sets a continuous trigger signal. By default,
CON-
Figure
sets the trigger source to
IMMEDiate.
- trigger source
EXTernal
sets the trigger source to an external trigger applied
to the rear panel ‘
Trig In
’ BNC connector.
- trigger source
BUS
causes the instrument to be triggered by the
*TRG
com-
mand received over an IO interface.
Trigger Source Example
//configure for frequency, set system trigger parameters
CONF:FREQ 5E6,0.1,(@2)
TRIG:SOUR EXT // trigger source external
System Trigger Slope
When the system trigger source is set to
EXTernal
, the triggering slope (edge)
of the signal is set with the command: