Keysight N9927-90001 User’s Guide                                                            315
Frequency Offset Using Power Sensor (FOPS) – Option 208
FOPS Settings
— Dwell /Point Specifies a settling time (in seconds) after the internal source 
steps to the next frequency and before the power sensor makes a 
measurement.
Amplitude Markers
Amplitude markers are horizontal dotted lines that you can move to any 
amplitude level on the screen. The two amplitude markers can be set 
independently or used as a pair of delta markers. Amplitude markers can be 
used 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, the   
arrows, 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 is 
moved, AmplMkr 2 also moves to maintain the AmplMkr 2 value 
between them.
— OFF
 The two amplitude markers move independent of one another.
Trace Math
Trace Math allows you to compare data traces and perform simple math. Learn 
how to use Trace Math in 
“All about Trace Math” on page 466. All Data and 
Memory features work as documented EXCEPT for the following:
To Compare Src Power (Input) and Rx Power (Output): 
1. Meas Rx Power
2. Store to memory
3. View Data & Memory
4. Meas Src Power.
When Trace, then Data -> Mem is pressed, if a Src Power trace is active, 
then RxPower is actually stored into memory.