Frequency Counter At Marker - Keysight FieldFox B Series User Manual

SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings

Frequency Counter at Marker

Available in SA Mode ONLY. Use any existing marker to make highly-accurate
frequency counter readings. For highest accuracy, lock the FieldFox to a stable
external frequency reference. Learn how in
page
When Frequency Counter is ON, the FieldFox uses background sweeps to
zoom on the signal, measure the signal peak with 1 Hz resolution, and display
the frequency of the signal peak in the marker annotation area. The marker
does not move to the signal peak.
When Freq Counter is ON, measurement sweeps are considerably slower.
How to use Frequency Counter
1. Press Marker.
2. Press Normal, Delta, or Peak, or select an existing marker to use as a
3. Locate the marker somewhere on a CW signal. It does NOT have to be on
4. Then
5. With Freq Count ON, you can scroll through the existing markers that are
Time Zero Fixed Marker
This feature was created to allow recall of vintage instrument states (older than
Rev. 7.0) that included Zero span sweep with a trigger delay and at least one
marker. Before Rev. 7.0, these instrument states were saved and recalled with
the equivalent of the ON state of this setting. The default setting is OFF. Learn
more about Triggering with negative delay in
1. Press Mkr->/Tools >
2. Then choose from the following:
Keysight N9938-90006 User's Guide
— Auto Measures power over 5% of the displayed span, or ½
graticules. The Band Span is automatically updated to remain at 5%
when you change the frequency span.
— Man Enter a frequency or time value using the
rotary knob, then press Enter. Or enter a value using the numeric
keypad and select a frequency or time suffix. The Band Span
remains at the frequency or time value that you set as the span
changes.
789.
frequency counter.
the peak.
More Freq Count ON
>
located on a discrete CW signal, and read the frequency of the signal
peak. However, each frequency count update requires another sweep. If
the FieldFox is in HOLD, press
results.
More
"Frequency Reference Source" on
Single to update the frequency count
"Triggering" on page
Mkr Properties Time Zero Fixed
> >
arrows or the
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