The optical monitoring channel wavelength used by the ST2 board is: (Multiple choice)
A . 1491nm
B . 1471nm
C . 1510nm
D . 1511nm
Answer: AD
The optical monitoring channel wavelength used by the ST2 board is: (Multiple choice)
A . 1491nm
B . 1471nm
C . 1510nm
D . 1511nm
Answer: AD