User Manual

ManualsBrandsADC Telecommunications ManualsElectronicsDigivance Indoor Coverage Solution System

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ADCP-75-136 • Issue 1 • November 2002

Page 42

©

2002,

ADC

Telecommunications,

Inc.

5.3 Test System Performance

Testing

the

performance

of

the

system

involves

completing

various

RF

tests

and

telephone

service

tests

that

verify

if

the

system

is

functioning

properly.

Use

the

following

procedure

to

test

the

system

performance:

1.

Verify

that

the

forward

path

(downlink)

input

signal

level

at

the

DHU

is

optimized.

The

peak

COMPOSITE

forward

path

input

signal

level

at

the

DHU

should

be

set

at

–20

dBm.

Note:

In

a

CDMA

system,

the

power

level

is

dependent

on

the

traffic.

For

optimum

operation

in

a

CDMA

system,

the

input

signal

level

should

be

set

below

the

level

of

the

pilot

signal.

2.

Verify

that

the

reverse

path

(uplink)

signal

level

at

the

local

BTS

or

donor

antenna

is

optimized.

Note

that

the

reverse

path

output

signal

level

required

is

dependent

on

service

provider

signal

to

noise

requirements,

ICS

system

noise

floor,

the

service

provider

equipment,

and

the

system

configuration.

3.

Check

and

record

the

Received

Signal

Strength

Indication

(RSSI)

and

any

spurious

emission

levels

at

and

between

all

DRU

antennas.

Analyze

all

DRU’s

and

the

DHU

interface

using

a

spectrum

analyzer.

4.

Plot

the

RSSI

levels

on

a

floor

plan

of

the

building

and

check

against

the

pre-installation

RSSI

levels

to

determine

the

overall

and

average

RSSI

improvement

attributed

to

the

Digivance

ICS.

Check

the

entire

Digivance

coverage

area.

5.

Verify

call

processing

and

voice

quality

within

the

coverage

areas.

Initiate

and

receive

multiple

long

and

short

duration

calls.

Document

the

performance

and

address

any

issues

as

calls

are

processed

within

the

entire

coverage

area.

Assuming

a

properly

functioning

server

RF

link

and

BTS

and

a

properly

designed

and

optimized

ICS

system,

there

should

be

no

clicks,

mutes,

clipping,

or

crackles

within

the

coverage

area.

In

a

wireless

office

application,

hand

off

will

not

occur.

6.

If

the

DHU

interfaces

with

a

local

BTS

(microcell),

verify

the

handoff

function

by

placing

a

call

and

confirming

handoffs

between

the

Digivance/microcell

coverage

area

and

the

outdoor

macrocell

coverage

area

(macro

system)

and

vice

versa.

The

handoff

should

take

place

without

any

noticeable

call

quality

or

performance

issues.

7.

If

the

DHU

interfaces

with

a

remote

BTS

through

a

donor

antenna,

verify

call

quality

by

placing

a

call

and

then

walking

between

the

Digivance

coverage

area

and

an

area

receiving

good

coverage

directly

from

the

cell

site

base

station.

There

should

be

no

noticeable

difference

in

call

quality.

8.

Following

service

provider

guidelines,

test

the

411

and

911

links

to

verify

the

routing

of

emergency

and

special

services

calls

on

local

BTS

configurations.

9.

Verify

that

the

alarm

reporting

system

functions

properly

by

turning

the

DHU

off.

This

should

generate

a

major

and

minor

alarm

and

operate

both

the

major

and

minor

alarm

contacts.

Check

for

alarm

confirmation

from

the

service

provider’s

local

switch

and

Network

Operations

Center

(NOC).

Note

that

this

tests

only

the

external

alarm

system

and

does

not

verify

operation

of

the

Digivance

alarm

reporting

system.