Back-to-back OTM sites, three new relay wavelengths are added. The schematic diagram is as follows. Which of the following statements is wrong?

Back-to-back OTM sites, three new relay wavelengths are added. The schematic diagram is as follows. Which of the following statements is wrong?

A . No impact on OTM site up and down services
B . The input optical power of the optical amplifier board does not need to be adjusted
C . No further adjustment is required for the VOA on the relay wavelength
D . The VOA of the upper wave does not need to be adjusted

View Answer

Answer: C