جستجو
توضیحات
OI4D یک برد رابط نوری 2 پورت xSTM-4 است. OI4D را می توان در یک اسلات نصب کرد یا با SCB یکپارچه کرد.
Working principle and signal flow:
Receive Direction
The O/E converting module converts a received STM-1 optical signal into an STM-1 electrical signal and sends the STM-1 electrical signal to the data and clock restoration module. The R_LOS alarm signal can be detected in the O/E converting module. The data and clock restoration module restores the clock signal and sends the clock signal and the STM-1 electrical signal to the SDH overhead processing module. Then, the SDH overhead processing module extracts the overhead bytes from the received STM-1 signal and sends the payload signal to the cross-connect unit through the backplane. The R_LOF alarm signal, R_OOF alarm signal, and other alarm signals are detected in the SDH overhead processing module.
Transmit Direction
The SDH overhead processing module inserts the overhead bytes into the electrical signal sent from the cross-connect unit and sends the electrical signal to the E/O converting module. Then, the E/O converting module converts the STM-1 electrical signal into an STM-1 optical signal and sends the STM-1 optical signal to fibers for transmission.
Logic Control Module
This module generates the timing clock signal and frame header for the board, and controls the ALS function.
Power Unit
This unit provides DC power for all the modules of the board.
دیدگاهها
هیچ دیدگاهی برای این محصول نوشته نشده است.