Keysight N777 C Series Programming Manual page 67

Parameters: The frequency difference is a float value in Hz.
Response: None
Example: :sour0:wav:freq -10THZ
Affects: All N777xC tunable laser sources
Command: :SOURce0:WAVelength:FREQuency?
Syntax: :SOURce0:WAVelength:FREQuency?
Description: Returns the frequency difference used to calculate a relative wavelength.
Parameters: None
Response: Returns the frequency difference as a float value in Hz.
Example: :sour0:wav:freq? -> -1.00000000E+013
Affects: All N777xC tunable laser sources
Command: :SOURce0:WAVelength:REFerence?
Syntax: :SOURce0:WAVelength:REFerence?
Description: Returns the reference wavelength (l0).
Parameters: None
Response: The wavelength as a float value in meters.
Example: :sour0:wav:ref? -> +1.5500000E-006
Affects: All N777xC tunable laser sources
Command: :SOURce0:WAVelength:REFerence:DISPlay
Syntax: :SOURce0:WAVelength:REFerence:DISPlay
Description: Sets the reference wavelength to the value of the output wavelength (l -> l0), that is, sets the frequency offset (df) to zero.
Parameters: None
Keysight N777xC Series Tunable Laser Family Programming Guide
Measurement Operations & Settings 4
67