Keysight Technologies C Series - Frequency Counter at Marker

218 Keysight N9915-90020 User’s Guide
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE
SA Mode Settings
Summary:
— In Zero span, an Interval Power Marker yields the average power over the
specified time interval.
— In non-Zero span, a Band Power Marker yields the total power over the
specified frequency range.
How to measure Band/Interval Power with a marker
1. Press Marker to create or select a Normal or Delta marker to use to
measure Band/Interval Power.
2. Then press More > Marker Function > Band/Int Power > Band (or Interval)
Span
3. Then choose from the following:
— 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 arrows or 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.
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
“Frequency Reference Source” on
page 800
.
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
frequency counter.
3. Locate the marker somewhere on a CW signal. It does NOT have to be on
the peak.
4. Then
More
> Freq Count ON