H831PDMB,Huawei MA5818 ONU DC Power Board
Huawei MA5818 Board H831PDMB Overview
H831PDMB is a DC power board that passes through and converts the combined single -48 V DC power. It then outputs -48 V DC and +12 V DC power to the backplane. Through the backplane, it passes through power to the service boards, centralized vectoring processing board, control board, and fan monitoring board.
The basic working principle of the H831PDMB board is as follows:
DC power supply (The board supports one -48 V DC input and a total output power of 550 W.)
Protection against overtemperature, output overcurrent, output short circuit, and output overvoltage