Keysight N9923-90001 User’s Guide 143Frequency Offset Using Power Sensor (FOPS) – Option 208FOPS Settings— Dwell /Point Specifies a settling time (in seconds) after the internal sourcesteps to the next frequency and before the power sensor makes ameasurement.Amplitude MarkersAmplitude markers are horizontal dotted lines that you can move to anyamplitude level on the screen. The two amplitude markers can be setindependently or used as a pair of delta markers. Amplitude markers can beused as a visual comparison aid with the data trace.How to make Amplitude Marker settings— Press Marker— Then More— Then Ampl Markers— Then choose from the following:— OFF Amplitude markers are NOT displayed.— ON Amplitude markers ARE displayed at their previous positions.— Then Ampl Mkr 1 or 2— Enter a value in dBm for the marker using the numeric keypad, thearrows, or the rotary knob.— Press Delta Ampl Mkr— Then choose from the following:— ON AmplMkr 2 value is relative to AmplMkr 1. When AmplMkr 1 ismoved, AmplMkr 2 also moves to maintain the AmplMkr 2 valuebetween them.— OFF The two amplitude markers move independent of one another.Trace MathTrace Math allows you to compare data traces and perform simple math. Learnhow to use Trace Math in “All about Trace Math” on page 189. All Data andMemory features work as documented EXCEPT for the following:To Compare Src Power (Input) and Rx Power (Output):1. Meas Rx Power2. Store to memory3. View Data & Memory4. Meas Src Power.When Trace, then Data -> Mem is pressed, if a Src Power trace is active,then RxPower is actually stored into memory.