8 Trigger
8.1 Trigger
Additional controls are also present that are not dependent on the selected Trigger
Source.
Example
:TRIG:SOUR EXT1
Swept SA measurement
:TRIG:<meas>:SOUR EXT1
Measurements other than Swept SA
Annunciation External 1 (in the Meas Bar)
8.1.1.6 External 2
When External 2 is selected, a new sweep/measurement starts when the external
trigger condition is met using the TRIGGER 2 IN input connector on the rear panel.
Grayed-out if Ext 2 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 2.
The Trigger tab contains the following Trigger Source dependent controls when
External 2 Trigger is selected:
–
"Prot Frame Aligned" on page 2660
–
"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 EXT2
Swept SA measurement
:TRIG:<meas>:SOUR EXT2
Measurements other than Swept SA
Annunciation External 2 (in the Meas Bar)
8.1.1.7 External 3
When External 3 is selected, a new sweep/measurement starts when the external
trigger condition is met using the TRIGGER 3 IN input connector on the rear panel.
This control only appears in certain instrument and option combinations, as follows.
–
For N9042B, selects the Precision External Trigger, but available only when IF
Path is 255 MHz or wider. The resolution will be within one sample count of the
2649 Spectrum Analyzer Mode User's &Programmer's Reference
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