Overview The H802GPFD board supports the following functions: Sixteen GPON SFP ports A maximum of 1:128 split ratio Class B+ and Class C+ optical modules Received signal strength indicator (RSSI) detection and controlled optical signal transmission of the optical module ONU-based queque shaping Temperature query and high temperature alarm Automatic power shutdown in case of a high temperature Specifications Table 1 Specifications of the H802GPFD board Board Dimensions (W x D x H) Power Consumption H802GPFD Metric: 22.86 mm x 237.00 mm x 395.40 mm Imperial: 0.90 in. x 9.33 in. x 15.57 in. Static: 45 W Maximum: 73 W Working Principle Figure 1 illustrates the working principle of the H802GPFD board. Figure 1 Working principle of the H802GPFD board The basic working principle of the H802GPFD board is as follows: The control module loads the board software, controls the running of the board, and manages the board. The switching module aggregates the signals from sixteen GPON ports. The interface module converts between GPON signals and Ethernet packets. The power module supplies power to other functional modules of the board. The clock module provides the working clock for other functional modules of the board. Front Panel and LED Table 3 Front panel and LED of the H802GPFD board RUN ALM: running status LED Red: blinks every 0.25s The board enters the APP start phase during the board startup. Green: blinks every 0.25s The board enters the phase of communication with the control board during its startup. Green: blinks every 1s The board works in the normal state. Orange: blinks every 0.25s (supported in V800R009C00 and later versions) A high-temperature alarm is generated. Red: on The board is faulty. BSY: port status LED Green: blinks every 0.25s The board carries services. Green: off The board carries no service. 0-15: PON port LED Green: on The ONT of the related PON port is online. Green: blinks every 0.25s The optical module does not take effect. Check whether the optical module is properly used. Green: off The ONT of the related PON port is offline.