# Meaning of single-wavelength optical power detection range in the optical specifications of the MCA board

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The MCA board can be connected to various types of boards. The indicator refers to the single-wavelength optical power input to the MCA board, but not the output optical power of a board that the MCA board monitors.

###### Other related questions:
Optical signal indicators detected by the MCA board
Question: What are the optical signal indicators that can be detected by the MCA board? Analysis: None Root cause: None Answer: Optical power, center wavelength, OSNR, and number of channels.

Method used to convert between the optical power of multiplexed wavelengths and optical power of single wavelengths of an OA board
The relationship between the optical power of multiplexed wavelengths and optical power of single wavelengths of an OA board is as follows: Optical power of multiplexed-wavelength signals = Optical power of single-wavelength signals + 10lgN where N is the number of wavelengths for multiplexed-wavelength signals.

Relationship between single-wavelength input optical power and single-wavelength output optical power
Single-wavelength output optical power = OA gain + Single-wavelength input optical power

Meaning of the "Detect range for single channel optical power" indicator in the interface specifications of the MCA optical interface board
The MCA board can be connected to various types of boards. This indicator indicates the single-wavelength optical power of the MCA board, not the output optical power of the board to be monitored by the MCA board.

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.

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