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Do not use Marker Noise to evaluate the displayed average noise level
NOTE
of the analyzer relative to the specification. Read the displayed average
noise level directly from the display or use the normal marker. Refer to
Application Note 150 for a discussion of how noise is displayed on a
spectrum analyzer.
Turns off the active function markers.
Off
Key Access:
Compresses the graticule and displays marker information in a table.
Marker Table
The information includes the marker number, trace number, marker
On Off
type, X axis value, and the amplitude.
Key Access:
Turns off all of the markers, including markers used for signal track
Marker All Off
and demodulation. Marker annotation is also removed.
Key Access:
Chapter 2
Note that the data values averaged will not always be
symmetrical with respect to the marker position. If the
marker is positioned within 2.5% of the beginning of
the trace (one-quarter division), the trace data values
in the first half-division will be averaged. Similarly, if
the marker is positioned within 2.5% of the end of the
trace, the trace data values in the last half-division will
be averaged.
To guarantee accurate data for noise-like signals, a
correction for equivalent noise bandwidth for each
resolution bandwidth is measured and included in the
measurement. The Marker Noise function accuracy is
optimal when the detector is set either to Average or to
Sample becuase neither of these detectors peak-biases
the noise.
Key Access:
Marker
,
,
Marker
More
Function
,
Marker
More
,
Marker
More
Front-Panel Key Reference
,
,
More
Function
Marker
119
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