Keysight Technologies N778 C Series Programming Manual page 64

5 Polarization Commands
Command: :POLarimeter:WAVelength
Syntax: :POLarimeter:WAVelength<wsp><wavelength> [PM|NM|UM|MM|M]|MINimum|MAXimum|DEFault
Description: This command sets the current wavelength / start wavelength.
Parameters: The wavelength as a float value. If you specify no units in your command, meters are used as the default.
Example: :POLarimeter:WAVelength 1.550E-06
Affects N7781C / N7786C / N7788C
Command: :POLarimeter:WAVelength?
Syntax: :POLarimeter:WAVelength? [MINimum|MAXimum|DEFault]
Description: Returns wavlength
Parameters: Optional
Response The wavelength as a float value in meters.
Example: :pol:wav? 1.550E-06
Affects N7781C / N7786C / N7788C
Command: :POLarimeter:GAIN
Syntax: :POLarimeter:GAIN<wsp><gain level>
Description: 0...5 = High Bandwith about 250kHz
6,7 = Medium Bandwith about 100kHz
8,9 = Slow Bandwith about 10kHz
NOTE - Use only gain between 0 and 7 for Stabilizer Mode because 8 and 9 have a small Bandwith.
For best results check the Leveling of the Polarimeter. Look at the POL:SWE:LPR? command.
Maximum Speed is at Gain 0 to 5
Even Gains have Factors of 10 and odd Gains Factors of 8. Choose what fits better.
Parameters: Gain level as integer
Response Gain level as integer
Example: :pol:gain 5
Affects N7781C / N7786C / N7788C
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MINimum: Returns the minimum wavelength
MAXimum: Returns the maximum wavelength
DEFault: Returns default wavelength
Keysight N778xC Series Polarization Instruments Programming Guide