Hi there!
This post will share you the Working Principle for N402P board.
An N402P board consists of a WDM-side rate/modulation format tunable optical module, a signal processing module, a control and communication module, and a power module. The overall board function is the sum of functions provided by the two ports, and the function of each port varies depending on the port mode. Therefore, the following describes working principles and signal flows by port mode.
When the working mode of a port is changed, the WDM-side rate/modulation format tunable optical module and 2x100G/2x200G/1x400G OTN processing module are automatically switched to the mode corresponding to the working mode. For example, after the working mode is set to 100G, the WDM-side rate/modulation format tunable optical module and 2x100G/2x200G/1x400G OTN processing module are automatically switched to the mode corresponding to 100G mode. The working principles of ports in 100G, 200G, and 400G modes are similar. The major differences among the three modes are signal rates.
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