2-33 Sweep Menu Spectrum Analyzer
2-66 PN: 10580-00349 Rev. H Spectrum Analyzer MG
Trigger Source Menu
Key Sequence: Shift > Sweep (3) key > Triggering > Source
Free Run: In this mode, a new sweep is started immediately upon
completion of an old sweep. No trigger event is required to initiate a sweep.
External (TTL): A TTL signal applied to the External Trigger BNC input
connector causes a single sweep. After the sweep is complete, the resultant
trace is displayed until the next trigger signal is received.
Video: This mode uses Video power as the trigger source. The trigger level
is set using the Level key in the “Triggering Menu”. The trigger is based on
the measured signal level. If no signal reaches or exceeds the trigger level,
no trace will be displayed on the screen.
IF Power (MS2720T Only): This mode uses IF power level as the trigger
source. The power level is set using the Level key in the “Triggering Menu”.
The trigger is based on the measured signal level. If no signal reaches or
exceeds the trigger level, no trace will be displayed on the screen.
Back: Returns to the “Triggering Menu” on page 2-65.
Figure 2-51. SPA Triggering Menu
Trigger Source
Back
External (TTL)
Video
Free
Run
IF Power
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