H801BIUA Board
The H801BIUA board is a BITS interface Unit board, providing BITS
input and output functions.
Feature and 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
Parameters
Power Consumption and Maximum Frame Size of Boards
You can query power consumption, maximum frame size, and normal
operating temperature of all boards.
lists the power consumption and maximum frame size of boards. "-"
indicates N/A.
The operating temperature of all the boards is -40°C to +65°C. The
lowest board startup temperature is -25°C.
NOTE:
The power consumption of the board is tested in the following
conditions:
Working voltage: -53.5 V DC.
Ambient temperature: 25 °C.
Static power consumption: All ports do not carry any loads.
Specifically, users under POTS ports hang up phones, xDSL ports are
deactivated, and optical modules are not installed on optical ports
Maximum power consumption: All ports fully carry loads. However,
only 25% users under POTS ports concurrently pick up phones and the
feeding current is 20 mA.
The board power consumption slightly varies with the power module
configured for the board and discreteness of components.
Table 1 Power consumption and maximum frame size of boards
Board | Power Consumption | Maximum Frame Size |
Universal interface board (GPIO) |
H801BIUA | Static: 5.3 W Maximum: 5.3 W | - |
Working Principle
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.
