Triggering - Keysight Technologies FieldFox A Series User Manual

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RTSA (Real-Time Spectrum Analyzer) Mode—Option 350 (CPU2 Only)

RTSA Mode Settings

— Then choose from the following:

The current Res BW setting is shown at the bottom of the screen.

#Res BW x.xx XHz (#) means manual setting.

This setting could impact the accuracy of the measurement. See Specifications

in Appendix B.

Triggering

Triggering only applies to Density Spectrum and Real-Time Spectrum.

External, Video, and RF Burst triggering enable you to initiate an RTSA mode

sweep using an external event such as a signal burst.

Trigger Type

— Press Sweep 3

— Then choose from the following:

The following two selections are similar in that they both trigger a sweep from

a signal at the SA RF Input connector. Experiment with both selections to find

the best trigger type for your application.

Keysight N9927-90001 User's Guide

Res BW is coupled to the frequency span. As the frequency

span is narrowed, the Res BW is also narrowed providing increased

ability to resolve signals.

To change this setting from Man to Auto, press Res BW twice.

Enter a Res BW value using the numeric keypad, the

arrows, or the rotary knob. Then press a multiplier if necessary or

Trigger Settings

Triggering is provided by the FieldFox internal circuitry. A new

sweep begins when the previous sweep ends.

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).

sets a trigger that repeats at the period rate entered. Periodic

trigger's phase can be altered by the Offset value.

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