User Manual

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Table Of Contents

SECTION 3: Host Unit Installation

ADCP-75-126 • Issue B • April 2002 • Section 3: Host Unit Installation

Page 3-3

©

2002,

ADC

Telecommunications,

Inc.

Figure 3-1. Typical OSP Cable Routing

At

the

RU,

the

OSP

fiber

optic

cable

should

be

spliced

to

a

connectorized

outdoor-rated

cable

(consisting

of

individual

jacketed

pigtails)

which

is

routed

into

the

RU

cabinet.

The

individual

pigtails

can

then

be

connected

directly

to

the

STM

optical

ports.

A

connector

is

provided

on

the

bottom

of

the

RU

cabinet

to

seal

the

cable

entry

point

and

provide

strain

relief.

The

procedure

for

routing

the

fiber

cable

into

the

RU

cabinet

and

for

connecting

the

pigtail

leads

to

the

STM

is

provided

in

the

Digivance

LRCS

Single

Band

SMR

Remote

Unit

Installation

Instructions

(ADCP-75-122).

When

all

splices

and

terminations

are

completed,

test

each

fiber

for

optical

loss

as

described

in

Section

5

of

this

document.

The

optical

loss

budget

for

9/125,

single-mode

fiber

is

25

dB

minimum

for

an

optical

BER

of

10

-6

.

The

power

level

of

the

received

optical

signal

should

not

exceed

–15

dBm

to

avoid

overdriving

the

optical

receiver.

If

necessary,

use

an

in-line

optical

attenuator

to

adjust

the

signal

level.

HOST UNIT

FIBER DISTRIBUTION PANEL

X

X

STM

REMOTE SITE

HOST SITE

PATCH

CORD

SPLICE

PIGTAIL

SPLICE

ENCLOSURE

INDOOR/OUTDOOR

CABLE WITH

PIGTAIL LEADS

OUTSIDE PLANT

CABLE

REMOTE UNIT

CABINET

16889-A