The PDL command runs the swept Polarization Dependent Loss measurement procedure which requires the following steps:
1.Set the start and stop wavelengths.
2.Set the resolution bandwidth (RB) and perform an auto-scale, as needed.
3.Set the video bandwidth (VB) as needed.
PDLINIT, PDLCALC, PDLDEV, PDL DEV?, PDLEXIT, PDLREV, PDL REV?, PDLSCALE, PDLSRC, PDL SRC?