Keysight Technologies N778 C Series Programming Manual page 72

5 Polarization Commands
Parameters: Sweep step in m
Example: :pol:swe:step 1pm
Affects N7781C / N7786C / N7788C
Command: :POLarimeter:SWEep:STEP?
Syntax: :POLarimeter:SWEep:STEP?
Description: In SME mode, this is the step (wavelength increased by this value) which is done for every trigger while logging.
Parameters: None
Response: Sweep step in float
Example: :pol:swe:step? → +1.00000000E-12
Affects N7781C / N7786C / N7788C
Command: :POLarimeter:SWEep:TRIGger:PRE:SAMPles
Syntax: :POLarimeter:SWEep:TRIGger:PRE:SAMPles
Description: Sets the number of pre samples. That means samples before trigger event.
Numbers of pre samples and post samples have to be smaller than 1048576.
Parameters: Number of pre samples
Example: :pol:swe:trig:pre:samp 1000
Affects N7781C / N7786C / N7788C
Command: :POLarimeter:SWEep:TRIGger:PRE:SAMPles?
Syntax: :POLarimeter:SWEep:TRIGger:PRE:SAMPles?
Description: Returns the number of pre samples.
Parameters: None
Response: Number of pre samples
Example: :pol:swe:trig:pre:samp? → +0
Affects N7781C / N7786C / N7788C
72 Keysight N778xC Series Polarization Instruments Programming Guide