Whether the wavelength-tuning function of a board is achieved by the board software or optical module

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The wavelength-tuning function of a board is mainly achieved by the optical module, but with the help from the board software.

Other related questions:
Whether an OTU board supports optical module replacement with an optical module of another wavelength
For OTU boards supporting pluggable SFP optical modules, the wavelength information depends on the optical modules, and therefore their optical modules can be replaced with optical modules of other wavelengths.

Wavelength tuning range of 5G OTU boards
LQG boards support wavelength tuning but OSN 8800 does not support 5G boards such as LQG boards. Therefore, no wavelength tuning for 5G boards is described in the OSN 8800 Product Description, but wavelength tuning for 5G boards is described in the OSN 6800 and 3800 Product Descriptions. For details, see the specifications of 5G boards in the OSN 6800 and 3800 Product Descriptions.

Whether the SSE7LWFT01 board of BWS 1600G supports wavelength tunable optical modules
The feature code T indicates that the wavelength is tunable. The SSE7LWFT01 board is a wavelength tunable board.

Whether an SSE7LWFT01 board on a BWS 1600G supports wavelength tunable optical modules
In the board name, T indicates tunable wavelengths. The SSE7LWFT01 board supports wavelength tunable optical modules.

Method for determining whether the wavelength of the TN53ND2 board is tunable
Query board manufacturer information and check the description of the module. "Tunable" indicates that the wavelength of the optical module is tunable.

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