EXFO FTB -5240S/5240BP Optical Spectrum Analyzer User Manual
Page 614
SCPI Command Reference
608
FTB-5240S/S-P/BP
Examples on Using the SCPI Commands
Modifying Selected Channel Analysis Parameters
(WDM)
Command Sequence
Comments
CALC:WDM:CHAN:CENT:WAV 1490.0
NM
Set channel center wavelength.
CALC:WDM:CHAN:WIDT:WAV 0.8 NM Set channel width.
CALC:WDM:CHAN:SIGP:TYPE IPOW
Set channel signal power type.
CALC:WDM:CHAN:NOIS:AUTO OFF
Select between auto (i-InBand) and custom
noise measurement.
CALC:WDM:CHAN:NOIS:TYPE POLY5 Select the noise type for custom noise
measurement.
CALC:WDM:CHAN:AUTO:NOIS:DIST:
WAV 0.55 NM
Set custom OSNR distance for 5th order
polynomial fit noise measurement.
Note: No need to send this command
for IEC, INBand or
INBandNarrowfilter noise types.
CALC:WDM:CHAN:AUTO:NOIS:WIDT:
WAV 0.3 NM
Set custom noise region for 5th order
polynomial fit noise measurement.
Note: No need to send this command
for IEC, INBand or
INBandNarrowfilter noise types.