EXFO FTB -5240S/5240BP Optical Spectrum Analyzer User Manual

Page 613

SCPI Command Reference

OSA

607

Examples on Using the SCPI Commands

Modifying Default Channel Analysis Parameters
(WDM)

Command Sequence

Comments

CALC:WDM:CHAN:AUTO:WIDT:FREQ
50.0 GHZ

Set channel width.

CALC:WDM:CHAN:AUTO:CENT:ITUG
ON

Optional: enable "snap ITU grid" for channel

width of: 25, 50, 100 or 200 GHz or 20 nm.

CALC:WDM:CHAN:AUTO:SIGP:TYPE
IPOW

Set channel signal power type.

CALC:WDM:CHAN:AUTO:NOIS:AUTO
OFF

Select between auto (i-InBand) and custom

noise measurement.

CALC:WDM:CHAN:AUTO:NOIS:TYPE
POLY5

Select the noise type for custom noise

measurement.

CALC:WDM:CHAN:AUTO:NOIS:DIST:F
REQ 57.5 GHZ

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:
FREQ 65.0 GHZ

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.