Keysight E6680A - Pk Threshold Line

3 IQ Analyzer (Basic) Mode
3.1 Complex Spectrum Measurement
of these two signals as a peak (or next peak). However, if a signal appears near the
edge of the screen such that the full extent of either the rising or falling edge cannot
be determined, and the portion that is on screen does not meet the excursion
criteria, then the signal cannot be identified as a peak.
When measuring signals near the noise floor, you can reduce the excursion value
even further to make these signals recognizable. To prevent the marker from
identifying noise as signals, reduce the noise floor variations to a value less than the
peak-excursion value by reducing the video bandwidth or by using trace averaging.
Pk Threshold Line
Lets you turn the peak threshold line on or off. Preset state is OFF.
Remote
Command
Complex Spectrum:
:CALCulate:SPECtrum:MARKer:PEAK:THReshold:LINE[:STATe]
:CALCulate:SPECtrum:MARKer:PEAK:THReshold:LINE[:STATe]?
Streaming:
:CALCulate:STReaming:MARKer:PEAK:THReshold:LINE[:STATe]
:CALCulate:STReaming:MARKer:PEAK:THReshold:LINE[:STATe]?
Example Turn Pk Threshold LineON:
:CALC:SPEC:MARK:PEAK:THR:LIN:STAT 1
Graphic
The Peak Threshold line is green and has the value of the peak threshold (for
example, “–20.3 dBm”) written above its right side, above the line itself. If Peak
Excursion is ON it shows on the left side as a region above the Peak Threshold Line.
As with all such lines (Display Line, Trigger Level line, etc.) it is drawn on top of all
traces.
217 IQ Analyzer Mode User's &Programmer's Reference