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Trigger
Trigger
Accesses a menu of keys to control the selection of the trigger source and the setup of each of the trigger
sources. The analyzer is designed to allow triggering from a number of different sources, for example,
Free Run, Video, External, RF Burst, and so forth.
The TRIG:SOURCe command (below) will specify the trigger source for the currently selected input
(RF or I/Q). If you change inputs, the new input remembers the trigger source it was last programmed to
for the current measurement, and uses that trigger source. You can directly set the trigger source for each
input using the TRIGger:RF:SOURce and TRIGger:IQ:SOURce commands (later in this section). When
in External Mixing, the analyzer uses the RF trigger source.
Note the inclusion of the <measurement> parameter in the command below. Because each measurement
remembers its own Trigger Source, the command must be qualified with the measurement name. Note
that for the Swept SA measurement this is not the case; for backwards compatibility, no <measurement>
parameter is used when setting the Trigger Source for the Swept SA measurement.
See “Trigger Source Presets” on page 1341
See “RF Trigger Source” on page 1344
See “I/Q Trigger Source” on page 1345
See “More Information” on page 1346
Key Path: Front-panel key
Remote Command: :TRIGger:<measurement>[:SEQuence]:SOURce
EXTernal1|EXTernal2|IMMediate|LINE|FRAMe|RFBurst|VIDeo|
IF|ALARm|LAN|IQMag|IDEMod|QDEMod|IINPut|QINPut|AIQMag|T
V
:TRIGger:<measurement>[:SEQuence]:SOURce?
where <measurement> is the measurement for which you wish to set the
Source (blank for the Swept SA measurement)
Example: TRIG:ACP:SOUR EXT1
Selects the external 1 trigger input for the ACP measurement and the selected
input
TRIG:SOUR VID
Selects video triggering for the Swept SA (SANalyzer) measurement in the
Spectrum Analyzer mode. For SAN, do not use the <measurement> keyword.
Only send this form in the Spectrum Analyzer mode or you will get an
Undefined Header error