User Manual

ManualsBrandsADC Telecommunications ManualsElectronicsDigivanceÂ® Long Range Coverage Solution 1900 MHz

1

2

3

4

5

6

7

8

9

Table Of Contents

SECTION 4: Operation
- 1 before starting operation
  - 1.1 Tools and Materials
  - 1.2 Readiness Check
    - 1.2.1 Host Unit Installation Checks
    - 1.2.2 Remote Unit Installation Checks
- 2 turn-up system and verify operation

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

Page 3-10

©

2002,

ADC

Telecommunications,

Inc.

7 OPTICAL CONNECTIONS

The

optical

interface

between

the

HU

and

the

RU

is

supported

by

either

two

(non-diversity)

or

three

(diversity)

optical

ports.

Each

optical

port

consists

of

an

SC

optical

adapter

which

is

mounted

on

the

HU

front

panel.

Port

1

provides

the

optical

fiber

connection

for

the

forward

path

(downlink)

signal.

Port

2

provides

the

optical

fiber

connection

for

the

reverse

path

(uplink)

signal.

Port

3

provides

the

optical

fiber

connection

for

the

diversity

reverse

path

(uplink)

signal.

The

optical

connections

are

dependent

on

whether

or

not

a

WDM

(optional

accessory)

is

installed.

If

the

installation

does

not

include

a

WDM,

proceed

to

Section

7.1

for

the

optical

connections

procedure.

If

the

installation

does

include

a

WDM,

proceed

to

Section

7.2

for

the

optical

connections

procedure.

7.1 Optical Connections Without WDM

Use

the

following

procedure

to

connect

the

optical

fibers

when

a

WDM

is

not

installed

with

the

HU:

1. Obtain

two

(non-diversity)

or

three

(diversity)

patch

cords

that

are

of

sufficient

length

to

reach

from

the

HU

to

the

fiber

distribution

panel.

2. Designate

one

of

the

patch

cords

as

the

forward

path

link

and

the

other

as

the

reverse

path

link

and

attach

an

identification

label

or

tag

next

to

the

connector.

For

diversity

systems,

designate

and

label

or

tag

a

third

patch

cord

as

the

diversity

reverse

path

link.

3. Remove

the

dust

caps

from

the

HU

optical

ports

and

from

the

patch

cord

connectors

that

will

be

connected

to

the

HU.

4. Clean

each

patch

cord

connector

(follow

connector

supplier’s

recommendations)

and

then

insert

the

connector

into

the

appropriate

optical

port

as

shown

in

Figure 3-9

and

as

specified

by

the

following:

Port

1

-

Forward

path

patch

cord

Port

2

-

Reverse

path

patch

cord

Port

3

-

Diversity

reverse

path

patch

cord

5. Route

the

patch

cords

from

the

HU

to

the

fiber

distribution

panel.

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

transmitter

of

any

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

transmitter

or

optical

fiber

connector

to

avoid

the

potential

of

dangerous

amounts

of

radiation

exposure.

This

practice

also

prevents

dirt

particles

from

entering

the

connector.

Note:

The

HU

optical

adapters

are

angled

to

the

left.

Therefore,

patch

cords

should

always

be

routed

to

the

HU

from

the

left

side

of

the

rack.

Routing

patch

cords

to

the

HU

from

the

right

side

of

the

rack

may

exceed

the

bend

radius

limitations

for

the

optical

fiber.