Chapter 3 71
Mode
Meas Off (Spectrum Analyzer) Measurement
Mode
Trigger
Displays the trigger settings menu. The Trigger menu is only available in zero span. In 
non-zero span, the trigger type is always free run.
When using a trigger source other than Free Run, the analyzer will begin a sweep only 
with the trigger conditions are met. A trigger event occurs when your trigger source signal 
meets the specified trigger level and polarity requirements (if any). 
Each Trigger source supports some or all of the trigger setting parameters:
Trigger Delay and Trigger Level will change the delay and level for any trigger source that 
supports these features. For example, if the Trigger Delay is set to 100 ms for Video 
Trigger, the Trigger Delay for External Triggers is now 100 ms.
Trigger Type Parameter
Delay Level Slope
Video Yes Yes
External Yes Yes
RF Burst Yes Yes
Remote Command :TRIGger[:SEQuence]:SOURce 
IMMediate|EXTernal|RFBurst|VIDeo
:TRIGger[:SEQuence]:SOURce?
Example TRIG:SOUR VID
Notes The Trigger Source Selection command is the only command that is 
measurement-dependent. It has its unique syntax per 
measurement
:TRIGger[:SEQuence]:SOURce would be used for “Measurement = 
SA” 
:TRIGger:”measurement name”[:SEQuence]:SOURce would be used 
for all other measurements