Keysight N777xC Series Tunable Laser Family Programming Guide 77
Measurement Operations & Settings 4
Response: None
Example: :sour0:wav:swe:stop 1550nm
Affects: All N777xC tunable laser sources
Command: :SOURce0:WAVelength:SWEep:STOP?
Syntax: :SOURce0:WAVelength:SWEep:STOP?[<wsp>MIN|MAX]
Description: Returns the end point of the sweep.
Parameters: optional MIN Returns the minimum start wavelength available.
This value is sweep speed dependent.
MAX Returns the maximum start wavelength available.
This value is sweep speed dependent.
Response: The wavelength at which the sweep ends as a float value in meters.
Example: :sour0:wav:swe:stop? -> +1.55000000E-006
Affects: All tunable laser modules
Command: :SOURce0:WAVelength:SWEep:[STATe]
Syntax: :SOURce0:WAVelength:SWEep:[STATe]<wsp>STOP|0|STARt|1|PAUSe|2|CONTinue|3
Description: Stops, starts, pauses or continues a wavelength sweep.
Parameters: 0 or STOP:
1 or STARt:
2 or PAUSe:
3 or CONTinue:
Stop the sweep.
Start a sweep, run sweep.
Pause the sweep. (doesn’t apply for continuous sweep)
Continue a sweep. (doesn’t apply for continuous sweep)
If you enable lambda logging (see
:SOURce0:WAVelength:SWEep:LLOGging on page 71 ) and modulation
(see :SOURce0:AM:STATe on page 64 ) simultaneously, a sweep cannot be started.
Generally, a continuous sweep can only be started if:
the trigger frequency, derived from the sweep speed and sweep step, is <=1MHz
the number of triggers, calculated from the sweep span and sweep span, is <=1048576
the start wavelength is less than the stop wavelength.
In addition, a continuous sweep with lambda logging requires:
the trigger output to be set to step finished modulation set to off.
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