SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
Sync
Selects the type of signal the periodic trigger is synchronized.
— None
No synchronization is selected for a Periodic trigger.
— External
A sweep is triggered on an external TTL signal at the Ref In/Trig In
connector on the FieldFox top panel. Choose to trigger on the rising slope
at about 1.7 V or on the falling slope at about 1.0 V using the Trigger Slope
setting (below).
— RF Burst
uses an alignment process which is performed in the background
to set the detected signal level accuracy. Learn more in “RF Burst
Amplitude Alignment” on page 202.
— 1 PPS GNSS
Periodic trigger is synchronized to a 1 pulse per second GNSS
signal.
Trigger Slope
Trigger Slope determines which edge of an External, Video, or RF Burst trigger
signal initiates a sweep.
—Press Sweep 3
—Then Trigger Settings
—Then Trig Slope
— Then choose from the following:
—Po
Sweep is triggered by the rising (positive) edge of signal.
—Neg
Sweep is triggered by the falling (negative) edge of signal.
Trigger Delay
After a valid trigger signal is received, the sweep begins after the specified
Trigger Delay time.
To see the rising edge of a repetitive signal which is triggered on that edge,
enter a negative trigger delay value (also known as pre-trigger). Adjust the
sweep time to observe the pre-trigger time if necessary.
—Press Sweep 3
—Then Trigger Settings
—Then Trig Delay
— Enter a value using the numeric keypad, the arrows, or the rotary
knob.
This softkey is ONLY available when Trigger Type is set to Periodic.
Keysight N9938-90003 User's Guide
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