Hi Alistu,
I understand. I have set frequency as 1590 nm at WDM Mux with 100Ghz spacing and CW lasers arrays at 1590 nm with 100Ghz spacing. At ONU when i set filter frequency at 1590.8 0r 1590.2 nm. It does not detect it and eye diagram doesn’t appear. It only appears when filter freqquency is exact 1590 nm. This is the problem occuring in both of the files I have attached.