Keysight N9912-90001 User’s Guide 8- 35
SA (Spectrum Analyzer) Mode
SA Mode Settings
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 in “Scale and Units” on
page 8-8.
Audio Beep can be used with any marker type or function, including
Band/Interval Power. Learn more in “Audio Beep at Marker Power” on
page 8-35.
How to use Audio Beep
—Press Marker.
— Optionally, press Marker 1 2 3 4 5 6
to select an existing marker to use with
Audio Beep. A marker will be created if one does not already exist.
—Then More
.
—Then Marker Function
.
—Then Audio Beep ON OFF
.
Audio Beep does NOT beep when the FieldFox is in Hold mode.
While Audio Beep is ON, press Marker 1 2 3 4 5 6
to toggle Audio Beep
through the existing markers.
To set FieldFox speaker volume control, press System
, then Volume. Learn
more in
“Volume Control” on page 4.
Meas UNCAL Error
Meas UNCAL appears in the lower-left corner of the screen when the FieldFox
can NOT display accurate measurement results with the current settings.
Usually, the part of the trace that is inaccurate is shown at –200 dB.
The following situation can produce Meas UNCAL:
— In Zerospan, when Sweep Time is set too high for the current Res BW.
Lower the Res BW or the Sweep Time setting.
— When the ResBW/VBW ratio exceeds 10,000, causing the VBW filter to
reach the maximum capacity for averaging.
Old Data Indicator (*)
In SA mode, when the current trace does not exactly match the annotation that
is on the screen, an asterisk is displayed in the upper-right corner of the screen
graticule area. This would occur, for example, when the Res BW setting is
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