Keysight E6680A - Pk Search Config; Pk Threshold

3 IQ Analyzer (Basic) Mode
3.1 Complex Spectrum Measurement
3.1.7.4 Pk Search Config
Contains controls that allow you to setup the Peak Search functions.
Since the Pk Search Config functions are independent of the selected Marker, the
Select Marker control does not display while in Pk Search Config.
Pk Threshold
Lets you turn the peak threshold requirement on/off and sets the threshold value.
The peak threshold value defines the minimum signal level (or min threshold) that
the peak identification algorithm uses to recognize a peak.
When both "Pk Excursion" on page 215 and "Pk Threshold" on page 214 are ON, a
signal must rise above the Pk Threshold value by at least the Pk Excursion value and
then fall back from its local maximum by at least the Pk Excursion value to be
considered a peak.
For example, if a threshold value of –90 dBm is selected, the peak search algorithm
only considers signals with amplitude greater than the –90 dBm threshold. If a
threshold value of –90 dBm is selected, and Peak Excursion is ON and set to 6 dB,
the peak search algorithm only considers signals with amplitude greater than the –
90 dBm threshold, which rise 6 dB above the threshold and then fall back to the
threshold.
NOTE
If a signal comes onto the screen falling and falls all the way to the threshold
without ever rising, it is considered a peak at the far-left edge of the display.
Similarly, if a signal rises from the threshold and leaves the screen without ever
falling, it is considered a peak at the far-right edge of the display.
Remote Command Complex Spectrum:
:CALCulate:SPECtrum:MARKer:PEAK:THReshold <ampl>
IQ Analyzer Mode User's &Programmer's Reference 214