Frequency Counter At Marker; Audio Beep At Marker Power - Keysight N9912A User Manual

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 on page 180.
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
 Press Marker.
 Press Normal, Delta, or Peak, or select an existing marker to use as a frequency
 Locate the marker somewhere on a CW signal. It does NOT have to be on the
 Then
 Then
 With Freq Count ON, you can scroll through the existing markers that are located

Audio Beep at Marker Power

When enabled, the Audio Beep feature emits a repetitive beep sound which varies in
tone pitch and repetition rate to indicate the relative power level of the active
marker. The highest tone pitch and fastest beep rate occurs when the marker Y-axis
position is at the top of the display. Conversely, the lowest pitch and repetition rate
occurs at the bottom of the display. Therefore, it is important to scale the signals that
you intend to measure between the top and bottom of the screen. Learn more about
Scale on page 72.
Audio Beep can be used with any marker type or function, including Band/Interval
Power. Learn more on page 91.
How to use Audio Beep
 Press Marker
 Optionally, press
 Then
92
Measures power over 5% of the displayed span, or ½ graticules. The Band
Auto
o
Span is automatically updated to remain at 5% when you change the frequency
span.
Enter a frequency or time value using the ▲|▼ arrows or the rotary knob,
Man
o
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.
counter.
peak.
More
Freq Count ON
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
to update the frequency count results.
Single
Marker 1 2 3 4 5 6
Audio Beep. A marker will be created if one does not already exist.
More
to select an existing marker to use with
FieldFox User's Guide