Installation Manual

ManualsBrandsADC Telecommunications ManualsElectronicsDigivance 1900 MHz Indoor Coverage Solution

ADCP-75-112 • Issue 2A • June 2001

Page 17

©

2001,

ADC

Telecommunications,

Inc.

ANTENNA

PORT

SMA

CONNECTOR

16451-A

TORQUE WRENCH SET TO

5 INCH-POUNDS (45 N.CM)

Figure 14. DRU Antenna Connection

2.7 Optical Connection

The

optical

interface

between

the

DRU

and

the

DHU

or

DEU

is

supported

by

a

small

form

factor

LC-type

optical

transceiver

which

is

mounted

on

the

DRU

front

panel.

One

side

of

the

transceiver

provides

the

optical

fiber

connection

for

the

forward

path

(downlink)

signal.

The

other

side

of

the

transceiver

provides

the

optical

fiber

connection

for

the

reverse

path

(uplink)

signal.

Use

the

following

procedure

to

connect

the

forward

and

reverse

path

optical

fibers

to

the

DRU:

Danger:

This

equipment

uses

a

Class

1

Laser

according

to

FDA/CDRH

rules.

Laser

radiation

can

seriously

damage

the

retina

of

the

eye.

Do

not

look

into

the

ends

of

any

optical

fiber.

Do

not

look

directly

into

the

optical

transceiver

of

any

digital

unit

or

exposure

to

laser

radiation

may

result.

An

optical

power

meter

should

be

used

to

verify

active

fibers.

A

protective

cap

or

hood

MUST

be

immediately

placed

over

any

radiating

transceiver

or

optical

fiber

connector

to

avoid

the

potential

of

dangerous

amounts

of

radiation

exposure.

This

practice

also

prevents

dirt

particles

from

entering

the

transceiver

or

connector.

1. Locate

the

forward

and

reverse

path

optical

links

that

were

routed

to

the

DRU

from

the

DHU

or

DEU.

Note:

The

procedures

for

routing

the

forward

and

reverse

path

optical

links

from

the

DHU

or

DEU

to

the

DRU

are

covered

in

either

the

Digivance

ICS

Installation

and

Operation

Manual

(ADCP-75-110),

which

is

provided

with

the

DHU,

or

the

Digivance

ICS

Digital

Expansion

Unit

Installation

Instructions

(ADCP-75-111),

which

is

provided

with

the

DEU.

2. Determine

which

of

the

optical

cable

pairs

is

designated

as

the

forward

path

link

and

which

is

designated

as

the

reverse

path

link.

3. Use

the

plastic

joiner

provided

with

the

LC

optical

connectors

to

join

the

DRU

forward

and

reverse

path

connectors

together

as

shown

in

Figure

15.

Make

sure

the

forward

path

and

the

reverse

path

connectors

are

oriented

as

shown.

Note:

When

viewing

the

DRU

optical

transceiver

from

the

front,

the

forward

path

port

is

on

the

right

(RX)

and

the

reverse

path

port

is

on

the

left

(TX).