Chapter 2 167
Front-Panel Key Reference
Peak Search
Peak Threshold Sets the minimum amplitude of signals that the
marker can identify as a peak. For example, if a value
of –90 dBm is selected, the marker moves only to peaks
that rise and fall more than the peak excursion value
above –90 dBm. Pressing
Preset or turning the Power
on resets the excursion to 6 dB and the threshold to
−
90 dBm.
The value of the threshold appears in the
active-function block and on the lower-left side of the
display. The threshold level does not influence the trace
memory or marker position. The value of the peak
threshold level can be changed using the step keys, the
knob, or the numeric keypad. Pressing any digit, 0
through 9, on the numeric keypad brings up the
selected terminator menu.
Key access:
Peak Search, More, Search Criteria
Peak Search
Type
Allows you to select the peak search mode.
Key access:
Peak Search, More, Search Criteria
Max Value
When Peak Search Type is set to Max
Value
, a peak search places a marker on
the highest peak, excluding the LO
feedthrough peak.
Key Access:
Peak Search, More, Search
Criteria
, Peak Search Type
Excursion &
Threshold
When Peak Search is set to Excursion &
Threshold
, a peak search places a
marker on a peak that meets the
Peak
Excursion
and Peak Threshold
parameters. If
Peak Search Type is set
to
Excursion &Threshold and no peak
satisfies the selected parameters, a
marker is placed at the center of the
trace, and the error message, No Peak
Found will appear. Refer to
Show Errors
on page 203, to remove the error
message.
Key Access:
Peak Search, More, Search
Criteria
, Peak Search Type
Peak Table
Accesses the following Peak Table menu keys:
Key Access:
Peak Search, More 1 of 2
Peak Table
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