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MA5600T, MA5603T, and MA5608T Hardware Description 25

This manual describes the Huawei MA5600T, MA5603T, and MA5608T hardware specifications, such as dimensions, weight, power consumption, capacity, structure, chassis, slots, boards, power modules, and optical modules.
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H801BIUA Board Description

H801BIUA Board Description

The H801BIUA board is a BITS interface Unit board, providing BITS input and output functions.

Functional Specifications

The H801BIUA board supports the following functions:

  • Two standard BITS clock inputs and one standard BITS clock output
  • Input and output of 2 MHz and E1 signals
  • Tracing the input clock source of the two channels of BITS clock or tracing the output clock source of the control board
  • Multiple working modes, such as tracing, holdover, and free-run

Technical Specifications

Please refer to "Power Consumption and Maximum Frame Size of Boards".

Working Principle

Figure 3-38  Working principle of the H801BIUA board

The basic working principle of the H801BIUA board is as follows:

  • The control module loads the board software, controls the running of the software, and manages the entire board.
  • The BITS clock processing module selects the mode and separates the two channels of input BITS clock signals, restores the clock for 2 Mbit/s signals, shapes the 2 MHz signals, and outputs one channel of 2 Mbit/s or 2 MHz clock signals.
  • The stratum-3 clock daughter board module provides the stratum-3 system clock with the accuracy of ±4.6 ppm.
  • The clock module provides clock signals for each functional module of the board.
  • The power module supplies power to each functional module of the board.

Front Panel Port








Running status indicator


Blinking slowly (on for 1 s and off for 1 s repeatedly)

The board works in the normal state


Blinking quickly (on for 0.25 s and off for 0.25 s repeatedly)

The board is starting up



The board is faulty or power off


Alarm indicator



The board is faulty or its CPLD software is being updated



The board functions properly


Clock input status indicator



Clock signals are input



No clock signal is input

Daughter Board

The H801BIUA board can be installed with one clock daughter board.

Figure 3-39  Position of the daughter board on the H801BIUA board

Table 3-21  Daughter board supported by the H801BIUA board

Daughter Board




Provides 32.768 MHz clock signals.

Traces the external reference source (8K signals), and outputs the synchronized 32.768 MHz clock signals.

This daughter board supports three working modes: free-run, tracing, and holdover.

Updated: 2019-03-18

Document ID: EDOC1000060621

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