Dekolink Wireless CBDA8009001W65 installation and operating instructions

p

Operating Instructions

MW-CBDA-SMR-800-900-1W65

Installation

and

for

Dual Band

Compact Bi-Directional Amplifiers

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

Dekolink Wir

Web site-

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

rohibited without Express Authorization from Dekolink Wireless Company.

Fax-972-3- 190-9180 ; [e-mail]- 972-3-9180-180;

www.dekolink.com rev 0 11/04 page 1 of 16

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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

AGC & MGC Function 6

AGC & MGC Control Diagram 6

CBDA Monitor and Alarm 7

CBDA Monitor and Alarm Block Diagram 8

BDA Installation 9

Base/Donor Antenna Installation 9

Remote / Service Antenna Installation 9

Antenna Isolation 9

Installation Steps 10

Diagnostics Guide 11

BDA Top Cover LED Indications 11

RF Power Amplifiers LED Indications 12

Electrical Specifications 13

Environmental Conditions 14

Mechanical Specifications 14

RF Exposure Warning 14

Mechanical Outline 15

Dekolink Wireless Limited Warranty 16

Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510
Tel- 972-3-9180-180; Fax-972-3- 190-9180 ; [e-mail]
Web site-

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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.

Main Characteristics

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

• 65 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:

UL:

DL:

than +15 dBm.

Power on green LED

Illuminates at uplink power amplifier current fault

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

Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510
Tel- 972-3-9180-180; Fax-972-3- 190-9180 ; [e-mail]
Web site-

www.dekolink.com rev 0 11/04 page 3 of 16

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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.

)side windows(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.

Block Diagram Description

The CBDA Downlink path receives the RF signals from base station amplifies them and

transmits them to the subscriber. The BDA Uplink path receives the RF 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.

For each path there is an AGC amplifier. The amplifier has an AGC option switch. When

switched on, the AGC circuit limits the amplifier output power. The AGC circuit senses the

output power and introduces more attenuation, when the output power exceeds the preset

level. This way the gain of the amplifier is reduced, its output power is limited and the

intermodulation products are kept below the desired level.

In this manner the output power cannot exceed the preset power and the IMD levels are

always kept below –13 dBm.

The AGC amplifier has a Power LED lamp that illuminates when the output power has reached

the preset power limit.

In addition the BDA has a trimmer that enables continuos reduction of the gain by over 15 dB.

Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510
Tel- 972-3-9180-180; Fax-972-3- 190-9180 ; [e-mail]
Web site-

www.dekolink.com rev 0 11/04 page 4 of 16

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RF Block Diagram

To Base

Downlink

935 to

941 MHz

851 to

869 MHz

896 to

902 MHz

TX

Power

Monitor

Attenuator

Gain Control

Attenuator

PA

PA

AGC

Power

Monitor

To Service

Area

935 to

941 MHz

TX

851 to

869 MHz

896 to

902 MHz

806 to

824 MHz

Quad Filter

Assy

RX

RX

AGC

Gain Control

Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510
Tel- 972-3-9180-180; Fax-972-3- 190-9180 ; [e-mail]
Web site-

www.dekolink.com rev 0 11/04 page 5 of 16

806 to

824 MHz

Quad Filter

Assy

Uplink

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