Launch power adjustment of the OBU board on OSN 6800

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The gain of an OBU board is fixed , but the gain of an OAU board is adjustable and gain locking and power locking are supported.

Other related questions:
Adjustment of the transmit optical power of the OBU board on OSN 6800 devices
The gain of the OBU board is fixed and that of the OAU board is adjustable. They support the power-locking and gain-locking modes.

Fiber connections of the OBU board on an OSN 6800
Fiber connections of the OBU board on an OSN 6800 are as follows: The TC port of the FIU board is connected to the VI port of the OBU board. The VO and IN ports of the OBU board are connected. The OUT port of the OBU board is connected to the IN port of the D40 board.

Whether it is feasible to replace OBU in the OSN 6800 with OAU
OAU boards have greater gain than OBU boards. Replacing OBU with OAU will increase the line gain. Large gain, however, will introduce noises. Therefore, the replacement is not recommended. You are advised to use Huawei professional WDM network optimization service to evaluate the entire network performance before determining a replacement solution.

Transmission distance and receive optical power range of a TOM board on OSN 6800
The transmission distances of a TOM board on OSN 6800 can be 10 km, 40 km, and 80 km. The receive optical power range is �? to �?0 dB.

Threshold of the input optical power of a WMU board in the OSN 6800
For the WMU board in the OSN 6800, its single-wavelength input optical power must be in the range of �?6 dBm to �?6 dBm.

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