ZTE Corporation BS8800C200 Manuale Utente

Chapter 9 Installation Check

Checking Power on

Prerequisite

�

Install power cables and ground cables of cabinet and power
supply.

�

Install power cable and ground cable inside the cabinet.

�

Install subracks and modules inside the cabinet.

�

Check whether all required tools are prepared.

Context

The cabinet adopts DC power supply. The nominal value of input
power is -48 V (-57 V~-40 V), referring to Cabinet Power Supply
Requirements.

Steps

1. Wear antistatic wrist straps properly and make sure it ground-

ing.

2. Set up all power switches of distribution subrack in OFF status.

3. Adjust a multimeter to a resistance grade. Measure the power

input terminal of distribution subrack with the multimeter and
make sure -48V power not short circuit.

4. Adjust the multimeter to a voltage end. Measure the -48V

output terminal of DC power with the multimeter and make
sure that output voltage is -48V.

5. One end of power cable connects to the -48V output terminal

of DC power, and the other end connects to the -48V output
terminal of cabinet. The front panel indicators of distribution
subrack in ON status (PWR IN) indicates that the cabinet is
provided with power supply but do not power on.

6. Set up the PWR switch of power subrack in ON status. The

indicators in ON status shows that power subrack powers on.

7. Considering a subrack as a unit, set up its relevant switch on

the cabinet power subrack in ON status.

Table 8

describes

the status of all power indicators on the distribution subrack
corresponding to various subracks.

ABLE

8 D

ISTRIBUTION

UBRACK

ANEL

NDICATOR

ESCRIPTION

Silk Screen

Name

Description

PWR

Overall cabinet
power and embe
dded transmission
subrack power