8 Trigger
8.1 Trigger
Example Measurements other than Swept SA:
:TRIG:<meas>:SOUR ADC
Annunciation ADC (in the Meas Bar)
8.1.1.4 Line
When Line is selected, start of a new sweep/measurement will be synchronized with
the next cycle of the line voltage.
Line trigger is not available when operating from a "dc power source", for example,
when the instrument is powered from batteries.
Line trigger is not available when using modular instruments like the VXT.
The Trigger tab contains the following Trigger Source dependent controls when Line
Trigger is selected:
–
"Trigger Delay" on page 2663
–
"Trigger Slope" on page 2667
Additional controls are also present that are not dependent on the selected Trigger
Source.
Example
:TRIG:SOUR LINE
Swept SA measurement
:TRIG:<meas>:SOUR LINE
Measurements other than Swept SA
Annunciation LINE (in the Meas Bar)
8.1.1.5 External 1
When External 1 is selected, a new sweep/measurement starts when the external
trigger condition is met using the TRIGGER 1 IN input connector on the rear panel.
Grayed-out if Ext 1 is in use by Point Trigger in the Source Setup menu of Swept SA.
Forced to "Free Run" on page 2646 if already selected and Point Trigger is set to
External 1.
The Trigger tab contains the following Trigger Source dependent controls when
External 1 Trigger is selected:
–
"Prot Frame Aligned" on page 2660
–
"Trigger Delay" on page 2663
–
"Trigger Slope" on page 2667
Spectrum Analyzer Mode User's &Programmer's Reference 2648
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