Dekolink Wireless CBDA8009001W80 Installation and operating instructions

p

Installation

and

Operating Instructions

for

MW-CBDA-SMR-800-900-1W80

Dual Band

Compact Bi-Directional Amplifier

Dekolink Wireless Proprietary and Confidential Information. Copying, Distribution, and Disclosure are

D

ekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510

Tel- 972-3-918

rohibited without Express Authorization from Dekolink Wireless Company.

0-180; Fax-972-3- 190-9180 ;

This document is protected by all applicable copyright laws.

omWeb site- www.dekolink.c rev 1 11/04

[e-mail];

page 1 of 16

Table of Contents

Paragraph Page No

CBDA Overview 3

Main Characteristics 3

Top Cover Alarm Indications 3

Remote Alarm Connector (back panel) 4

CBDA Indications and Control ( side windows) 4

Block Diagram Description 4

RF Block Diagram 5

Step Attenuator and RF Gain Setting 5

AGC Function 6

AGC & Gain Controls 6

AGC Amplifier Layout 6

CBDA Monitor and Alarm 7

CBDA Monitor and Alarm Function Block Diagram 8

CBDA Installation 9

Base / Donor Antenna Installation 9

Remote / Service Antenna Installation 9

Antenna Isolation 9

Installation Steps 10

Diagnostics Guide 11

Top Cover LED Indications 11

RF Faults and RF Power Amplifiers LED Indications: 12

Electrical Specifications 13

Environmental Conditions 14

Mechanical Specifications 14

RF Exposure Warning 14

Mechanical Outline

Dekolink Wireless Limited Warranty

15

16

Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510
Tel- 972-3-9180-180; Fax-972-3- 190-9180 ;
Web site- www.dekolink.com rev 1 11/04 page 2 of 16

[e-mail]

;

CBDA Overview

The Compact Bi-Directional Amplifier (CBDA) assembly provides exceptional

repeater/booster performances to extend the coverage area of radio

communications in buildings and RF shielded environments.

ain CharacteristicsM

• Covers both SMR 800 and SMR 900 in one product.

• 80 dB RF gain

• Over 24 dBm (1/4 Watt) downlink composite power.

• Alarm indication by LED and Dry contact

• Automatic power limit option

• Exceptionally high linear operation

• Ideal for in-building coverage solutions

• Relative small size and light weight

• Cost effective solution

• Wall mounted easy Installation

• Reliable operation, maintenance free

Top Cover Alarm Indications

PWR: Power on green LED

UL: Illuminates at uplink power amplifier current fault

Downlink RF power fault. Illuminates when the DL transmitted power is

DL:

less than +15 dBm.

Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510
Tel- 972-3-9180-180; Fax-972-3- 190-9180 ;
Web site- www.dekolink.com rev 1 11/04 page 3 of 16

[e-mail]

;

Remote Alarm Connector (back panel)

Dry contact relay arms are connected to this D9 connector. The relay arms

switch over at either one of the two alarms indicated on the top cover.

)dowsside win(CBDA Indications and Control

These are reached by opening the window on the sides of the CBDA

AGC LED: This red led illuminates when the transmitted power is equal or higher

than the composite power (factory preset at +24 dBm and DL).

AGC ON/OFF switch: Turns on the automatic power control.

Warning: The AGC switch must be always ON in order to limit the spurious

signals.

Step attenuator: The CBDA gain can be stepped down by the amount indicated

on the step attenuator.

lock Diagram DescriptionB

The CBDA Downlink path receives TX signals from base station amplifies them

and transmits them to the subscriber. The CBDA Uplink path receives RX

signals from the subscriber amplifies them and transmits them to the base

station. Two quad filter assemblies frequency separate the signals to the proper

amplifying path and isolate the two signals.

Each path has two amplifiers; a low noise amplifier (LNA) and a high power

amplifier. The low noise amplifier has a 30 dB step attenuator, which is used to

set the repeater gain.

The power amplifiers in the CBDA have an AGC option switch. They also have a

Power LED lamp that illuminates when the output power has reached the preset

power limit.

Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510
Tel- 972-3-9180-180; Fax-972-3- 190-9180 ;
Web site- www.dekolink.com rev 1 11/04 page 4 of 16

[e-mail]

;

To Base

935 to

941 MHz

851 to

866 MHz

896 to

902 MHz

806 to

821 MHz

Quad F ilter

Assy

TX

RX

Attenuator

LNA

Downlink

Power

Monitor

PA

AGC

Uplink

RF Block Diagram

Step Attenuator & RF Gain Setting

PA

AGC

Attenuator

Power

Monitor

LNA

TX

RX

To Service

Area

935 to

941 MHz

851 to

866 MHz

896 to

902 MHz

806 to

821 MHz

Qua d F ilter

Assy

For proper operation of the CBDA; the isolation between the base station

antenna and the mobile antenna should exceed the CBDA gain by at least 12

dB. If the CBDA gain were higher than the isolation between the antennas,

oscillation would start and would saturate the amplifier. Isolation few dB higher

than the CBDA gain cannot start oscillations but would cause gain ripple in the

band.

The step attenuator on the low noise amplifier can reduce the CBDA gain. The

CBDA gain can be stepped down by the amount indicated on the step attenuator

0 to 30 dB in 2 dB steps).

(

Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510
Tel- 972-3-9180-180; Fax-972-3- 190-9180 ;

Web site- www.dekolink.com rev 1 11/04 page 5 of 16

[e-mail]

;