Huawei BTS Base Station CDU M900 Combining and Distribution Unit 2127140026L066008127

Identification

Color

Explain

Specific instructions

POWER

Green

The power indicator light

Lighting: CDU is in a?power on?state.

Lights out: CDU is in?power down states.

VSWR1

Yellow

Level 1?standing wave?alarm indication?lamp

Lights out: Normal

Lighting/Flash: Level 1?standing wave?warning

VSWR2

Red

Level 2?standing wave?alarm indication?lamp

Lights out: Normal

Lighting/Flash: Level 2?standing wave?warning

TTA

Red

Tower?alarm indication?lamp

Lights out: No warning

Lighting: Tower?alarm

LNA

Red

Low noise amplifier?alarm indication?lamp

Lights out: No warning

Lighting: Low noise amplifier?alarm

Identification

Type

Specific instructions

TX/RX-ANT

Type N

RF?signal?transmitting / receiving?antenna connector.

MS/TX-TEST

SMA

The transmitter / receiver?test interface.

TX1

Type N

First road?emission?signal input?(the maximum allowed?input power is 60W).

TX2

Type N

Second road?emission?signal input?(the maximum allowed?input power is 60W).

RXD-ANT

Type N

RF?signal diversity receiving?antenna connector.

RXD-OUT

SMA

Diversity receiver?output.

RX1～4

SMA

Receiving?branch.

RXM-TEST

SMA

The main receiving?test interface

RX5～8

SMA

Receiving?branch

RXD-TEST

SMA

Diversity receiving?signal?test interface

HL-OUT

SMA

The primary?receive high?level output,?connected with the HL-IN,?which can realize theeight line?output.

HL-IN

SMA

High level input,?RX5 ~ 8?receiving?shunt?input

TX-COM

Type N

The combiner?output

TX-DUP

Type N

Emission?duplex?port,?two?emission signal?after connecting the?input interface

CDU-BUS

DB15

The control bus interface

DC-IN

aviation?connector

+26V DC?input,?allowing the?voltage fluctuation?range:?- 20%