Inkel JF43E1900CFN01 Users Manual

1. Overview

Base Station

BTS

Donor

Remote

Figure 1. System Configuration

Optic repeater is a type of BTS sub-systems. It is designed to cover the radio-

shadowed areas that could be occurred by obstructions among base stations. The

system provides high quality communication at reasonable cost by adopting high

technologies. For example, the system adopted WDM that multiplexes UL and DL

signals onto a single fiber cable, so that the system can be installed at low cost and

maintained with ease.

2. Major Advantages

A. REMOTE

1) It is easy to install and maintain the system, because it is designed as small size, light

weight, and low power consumption.

2) It is reliable by adopting water and moisture resistant structure.

3) Remote control

Operation, maintenance, and repair is easy by using the system that provides alarm

and information on the Gain Control of Remote Cell, output level control, power on/off,

internal temperature monitoring, and problems concerning optic module. Remote

control can be performed by RF modem so that operation and maintenance personal

can use it easily. And it was designed to operate with comprehensive network

management system.

4) Transmission and Receiving with 1 Core Optic Fiber

It use WDM which enables 2 wave-length (Forward: 1550nm, Reverse: 1510nm) to

simultaneously be transmitted and received through 1 Core Optic Fiber

5) Optic AGC (Automatic Gain Control): It is regularly keeping the loss between optic

sections.

6) ALC (Automatic Limit Control): It makes to limit the level of output power less than

the regular level.

B. DONOR

1) It is easy to install and maintain the system, because it is designed as small size, light

weight, and low power consumption.

2) Donor shelf is designed to mount into 19” shelf and also, can be mounted into the

enclosure that is following the IP65 standard.

3) Control

Operation, maintenance, and repair is easy by using the system that provides alarm

and information on the Gain Control of Donor Unit, output level control and problems

concerning optic module. Remote control can be performed by RF modem so that

operation and maintenance personal can use it easily. And it was designed to operate

with comprehensive network management system.

4) Transmission and Receiving with 1 Core Optic Fiber

It use WDM which enables 2 wave-length(Forward:1550nm, Reverse:1510nm) to

simultaneously be transmitted and received through 1 Core Optic Fiber

5) Optic AGC(Automatic Gain Control) : It is regularly keeping the loss between optic

sections.

3. The name and function of each module

A. REMOTE

BATTERYOPTIC UL_1 DL/UL_0 AC_OUTAC_IN

UL_1

DL/UL_0

OPTIC

BATTERY

AC_IN

Figure 2. A plan of Remote

3.1 Interior Module

① Optic

It changes the optic signal (from Donor) into RF signal and RF signal (from Remote)

into optic signal.

② DL_UL Drive

The module changes the level of a signal on DL path into the desired level. It has a

variable attenuator. The antenna output level on DL path is adjustable by the attenuator.

It amplifies the level of a signal on UL0 path.

It amplifies the level of a signal on UL1 path after down-conversion.

③ UL_SAW Drive

It contains saw filters for band selection.

④ Local & Modem Drive