Keysight N9923A, User Manual, Page: 182 / 276

182 Keysight N9923-90001 User’s Guide
Data Analysis Features
All about Markers
—
Peak Right
Moves the active marker to the next data point to the right that
meets the ‘Peak’ criteria. When no data points to the right meet the ‘Peak’
criteria, the marker does not move.
— More then Min Search (Not available in DTF) Moves the active marker to
the LOWEST amplitude data point of the trace.
The following applies to DTF Measurements ONLY:
—
More
—
Track Peaks ON OFF
When Track Peaks is ON, markers will find the new
peak with every sweep. While in this Mode, the markers can NOT be turned
OFF or moved.
—
Find 3 Peaks
Three markers are created and find the highest peaks (faults)
on the trace.
What Is a ‘Peak’
You define what the FieldFox considers a “peak” by setting the Peak Threshold
and Peak
Excursion
.
These two peak criteria settings are set individually for each trace and for each
mode.
These settings do NOT survive a FieldFox or Mode Preset.
How to set Peak Criteria
— Press Mrk ->/Tools .
— In
CAT and NA
modes:
—Then
Peak Search
.
— Then
Peak Criteria
— Then select the following:
—
Peak Threshold Minimum amplitude (dB). To be considered valid, the
peak must be
above
the threshold level. The valley on either side can
be below the threshold level. Default = –190 for CAT and NA Modes;
–90 for SA Mode.
The Peak Threshold and Excursion settings are NOT available in DTF
measurements. To make these settings, create a non-DTF CAT mode
measurement, then change the measurement back to DTF.
CAT mode Loss measurements are displayed in positive values. In these
cases, the Peak Threshold setting is inverted. For example, Peak Threshold
= -20 will consider any peak that has less Loss than 20 dB to be valid.