1109
Peak Search
Same as “Next Peak” Criteria
When this key is selected, pressing the Peak Search key or issuing the equivalent SCPI command finds
the maximum point on the trace, but subject to the Excursion and Threshold set under the Next Peak
Criteria menu. The search is, of course, also subject to the peak-search qualifications. This also affects
the Peak Search half of Pk-Pk search and the Continuous Peak Search.
“Next Peak” Criteria
This key opens up a menu which allows you to independently set the Peak Excursion and Peak
Threshold and turn them on and off.
Pk Excursion On/Off
Turns the peak excursion requirement on/off and sets the excursion value. The value defines the
minimum amplitude variation (rise and fall) required for a signal to be identified as peak. For example, if
a value of
6 dB is selected, peak search functions like the marker Next Pk Right function move only to peaks that
rise and fall 6 dB or more.
When both Pk Excursion and Pk Threshold are on, a signal must rise above the Pk Threshold value by at
least the Peak Excursion value and then fall back from its local maximum by at least the Peak
Excursion value to be considered a peak.
NOTE In the event that a sequence of trace points with precisely the same values
represents the maximum, the leftmost point is found.
See “More Information” on page 1110.
Readback Highest Peak
Initial S/W Revision Prior to A.02.00
Key Path Peak Search, Peak Criteria, “Peak Search” Criteria
Example CALC:MARK:PEAK:SEAR:MODE PAR
Readback Use Excurs & Thr
Initial S/W Revision Prior to A.02.00
Key Path Peak Search, Peak Criteria
Initial S/W Revision Prior to A.02.00
Key Path Peak Search, Peak Criteria, “Next Peak” Criteria