Margin that should be reserved for the average attenuation value of each single-wavelength channel on the M40V, WSMD2, WSMD4, or WSM9 board

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At the optical power adjustment point, at least 2.5 dB must be reserved for the average attenuation value of each single-wavelength channel so that there is a margin for potential subsequent optical attenuation adjustment.

Other related questions:
Cause why the attenuation of the EVOA on a non-service channel of the M40V board connected to the D40 board is set to the maximum in the dummy light scenario
This setting ensures that the receive optical power is small to prevent a sharp optical power change on adjacent service channels.

Nominal single-wavelength input optical power of the TN12OBU1 board in a 40-wavelength system
The nominal single-wavelength input optical power of the TN12OBU1 board in a 40-wavelength system is as follows: �?0 dBm for TN12OBU101 �?9 dBm for TN12OBU103 �?7 dBm for TN12OBU104

Single-wavelength input optical power range and nominal single-wavelength optical power of the OBU101 board on the OSN 6800
The single-wavelength optical power range is �?2 dBm to �?0 dBm, and the nominal single-wavelength optical power is �?0 dBm. The receive optical power depends on the number of added wavelengths.

Methods for querying the attenuation value of the amplifier board on the OptiX OSN 6800 device
You can run the :cfg-get-attenuation:Bid,Port,Path command to query the attenuation value of the board.

Insertion loss of an M40V board
When the attenuation of the embedded VOA on an M40V board is set to 0 dB, the minimum insertion loss of the M40V board is 8 dB.

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