Agilent Technologies ESA Series User's/Programmer's Reference page 120

Front-Panel Key Reference
Peak Search
To prevent the marker from identifying noise as
signals, reduce the noise floor variance to a value less
than the peak-excursion value by reducing the video
bandwidth or by using video averaging.
Key access:
Sets the minimum amplitude of signals that the
Peak Threshold
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
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
Allows you to select the peak search mode.
Type
Key access:
Max Value
Excursion &
Threshold
120
, ,
Peak Search More Search Criteria
or turning the Power
Preset
, ,
Peak Search More Search Criteria
, ,
Peak Search More Search Criteria
When
Peak Search Type
, a peak search places a marker on
Value
the highest peak, excluding the LO
feedthrough peak.
Key Access:
Peak Search
,
Criteria Peak Search Type
When
Peak Search
, a peak search places a
Threshold
marker on a peak that meets the
and
Excursion Peak Threshold
parameters. If
Peak Search Type
Excursion &Threshold
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
on page 155, to remove the error
message.
Key Access:
Peak Search
is set to
Max
, ,
More Search
is set to
Excursion &
Peak
is set to
and no peak
Show Errors
, ,
More Search
Chapter 2