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.