H801PRTE Board
The H801PRTE is a connect power board. It leads in the -48 V DC
power supply for the device.
Feature and Specifications
The H801PRTE board supports the following functions:
One -48 V power input
Filtering and current-limiting for the power input port
Under-voltage detection, detection of whether the input power
exists, and fault detection
Combined reporting of the protection alarm and board online signal
ALARM indicator
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 |
Power interface board (PRT) |
H801PRTE | Static: 1.5 W Maximum: 1.5 W | - |
Working Principle
Figure 1 Working principle of the H801PRTE board
The basic working principle of the H801PRTE board is as follows:
The H801PRTE board has a 3V3 power connector to lead a channel of
-48 V power supply. After passing the protection circuit and the
filtering circuit, the power supply is output to the backplane and
supplies power for other boards in the subrack.
The detection and report circuit detects fault of the protection
fuse. The detected signals and the presence signals of the board
are reported to the control board through the same channel. The LED
displays the status.
The detection and report circuit detects under-voltage of the input
power and whether there is input power.
The E2PROM circuit stores the vendor information of the board.
The 5 V power led from the backplane is used to supply some chips
of the board.
Front Panel Port
Indicator
Indicator | Name | Status | Meaning |
ALARM | Indicator of the protection circuit | Green: on | The protection circuit is normal |
Green: off | The protection circuit is faulty |
