CT Systems Wavetek 2500 Operation Manual

CT

SYSTEMS I W A

VETEK

COMMUNICATIONS SERVICE MONITOR

THIS

DOCUMENT

INFORMATION

ANY

MANNER

CELLULAR

CONTAINS

IN

THIS

DOCUMENT

WITHOUT

CT

(TOLL

THE

SYSTEMS

BEECH

Telex#

OPERATION

MODEL

TESTER/SIMULATOR

INFORMATION

IS

Nar

PRIOR

{317)

FREE

(800)

217124

FAX#

APPROVAL,

P.O.

BOX

GROVE,

(U.S.A.)

787-5721

OUTSIDE

245-6356

317-788-4197

MANUAL

2500

PROPRIETARY

TO

BE

USED

IN

TOCT

OR

DUPLICATED

WRITING

I W A VETEK

470

IN. 461

OF

C T

SYS

07

INDIANA)

IND

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SYSTEMS.

BY

CT

SYSTEMS.

THE

IN

This equipment,
copyright

part,

the

exclusive

may

is

included

not

be

rights

or

part,

copied

of

includes software copyrighted

in

the

software. The software included

without

CT

violating

SYSTEMS I WA

the

copyright

VETEK.

in

1989 and

la.ws of

in

this

the

United

the

notice of

equipment.

States

this

or

and

9006

any

CT

Systems

in

material
shipment.
any
warranty

assembly

for
defective
Wavetek

obligation
repairing
sole

opinion,

warranty

service
sole
changed

CT

Systems

surface

first

thirty

center.

discretion,

during

shipping

thirty

(30)

responsibility

F.O.B.

Should

he

will

surface

customer's

the
be

rate

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Wavetek

and

workmanship

CT

Systems

or

a

90-day

under
any

normal

such
proves

when

returned

This

the

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Wavetek

(30)

days,
for

customer

responsible

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warrants

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component

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instrument

to

warranty

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will

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during

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Systems
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CT

Systems

ownership

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claims
date.
Wavetek

After

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the

warranty

method

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year

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replace
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found
CT

Systems
solely

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CT

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products
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Systems
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assumes
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sale

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Systems

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conditions

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any

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or

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products

products
Systems

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Systems

or

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for

equipment.

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warranties,

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CT

Systems

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in

forth

CONTENTS

SECTION 1 GENERAL

1.1

1.2

1.3

1.4

SECTION 2 PREPARATION

2.1

2.2

2.3

SECTION 3 OPERATION

3.1

INFORMATION

INTRODUCTION
CELLULAR
SERVICE
GENERAL

UNPACKING
POWER
ENVIRONMENTAL

INTRODUCTION

REQUIREMENTS

MODE
MONITOR
SPECIFICATIONS

FOR

SPECIFICATIONS

MODE

USE

AND

INSPECTION

CONSIDERATIONS

SPECIFICATIONS

3.2

3.3

3.4

FRONT-PANEL
FIGURE
FIGURE
CELLULAR
SERVICE

3-1.
3-2.

RADIO

MONITOR

DESCRIPTION
CONTROLS
REAR

TEST

MODE

AND

PANEL

MODE

APPLICATION

PORTS

OPERATION

NOTES

SECTION-I

1.1

INTRODUCTION

The

CT

Systems

and

communications

use

package.

The Model

includes

a
testing.
test

results

connected.

A

manual
trouble
store

Testing

to

cell

control

mode

shooting

frequently

routines
site

messages;

frequency

Model

2500

is

"Go-No-Go"

A

parallel

can .be

enables

purposes.
used

include

calls;

and

deviation

2500

service

specially

automatic

printer

the
system

cell

mobile

is

a

cellular

monitor

designed

mode

port

generated

user

to

A

non-volatile

parameters.

cell

site

DTMF

site

voice
dialing;

measurements.

tester,

combined

for

is

provided

when

a

program

to

mobile
channel

into

for

cellular

quick
user

individual

memory

initiated

handoff;

voice

GENERAL

cell
one

cellular

so

a

hard

provided

allows

channel

INFORMATION

site

simulator

small,

testing

telephone

copy

printer

parameters

the

calls;
RF

power

SAT

easy

of

user

mobile

level

and

to

and
the

is

for

to

ST

Displays
ment

In

the

from

serial

Service

400

include

kHz

continuously

The

Model

audio

synthesizer
synthesizer
front-panel.
superimposed
oscilloscope

The

Model
volts,
audio

Power
power

Twenty

FM

frequency,

may

up

memory
front-panel
available
systems.

number)

Monitor

to

999.9999

variable

2500

contains

output

Deviation

on

in

both

2500

measures

deviation,

be

applied

to

110

registers

keyboard

software

mobile

and

and

has

the

demodulated

the

signal

error

to

watts

packages

dialed

station

Mode,

MHz

from

0.1

a 1 kHz
an

a

second

markers

Receive
and

frequency

the

(when

are

settings.

number;

class

the

in

100

uVolts

modulation

external

independently

and

displays

strength,

and

RF

in/out
terminated
available

An

allow

mark.

Model

Hz

to

modulation

at

output

Generate

sub-tone.

connector

optional

for

mobile

2500

steps.

10

source,

±5

kHz

for

SINAD

carrier

into

for

its

ID

generates

The

mVolts

variable

or
viewing
modes.

in

frequency,

for

a

storing

RS-232

use

number,

RF
in

a

10

input.

±600

dB

or

measuring

true

and
interface

in

ESN

and
output
five

ranges.
Hz
output

Hz

on

an

%

distortion,
demodulated

50

ohm

recalling

automated

(equip-

receives
leyel

to

10

The

audio

on

may

external

R.F.

load).

and

is

kHz
the

be

all
two

test

2500-MANUAL

PAGE

1 SECTION-1

1.2
Generate

2500

CELLULAR

MODE

SPECIFICATIONS

RF

Frequency

Resolution:

RF

Output:
Accuracy:
Spectral

SAT

Frequencies:

Digital
Receive

RF

Frequency
Resolution:
Power
Range:

Accuracy:
Counter

Meter

Purity:

Control

Modes

Range:

Channels:

Range:

869
with

100
+2
+300

5.97,

824
30

0
+10%

to

channel

Hz

0.1

uv

dB

< -

35

0,1,2

to

kHz

to

4
of

894

45

MHz

spacing

to

dBc

kHz ·

6.00
and

849

watts,

Reading,

MHz

Duplex

100

(typically

of

center

and

3

MHz

(channels

uV

frequency

6.03

(channels

with

Internal

+1

offset

-

kHz

mW

001

50

001

and

dBc>

Load

to

to

30

1023)

KHz

1023)

Frequency
Resolution:
Accuracy:

ST

or

SAT
Resolution:
Accuracy:

FM

Measurements

FM

Deviation:

SAT

Deviation:

1.3

Generate

Freq
Resolution:

RF

Accuracy:

Spectral

2500

Range:

Output:

Error

SERVICE

Purity:

MONITOR

10
+200

1

+1

up
up

MODE

400
100

0.1
+2 dB

<-35
frequency
bands)

Hz

Hz

Hz

Hz

to

+17.85

to

+5

kHz

SPECIFICATIONS

kHz

to

kHz

999.9999

Hz

uV

to

10

mV

dBc

within

(within

(Typical

in

±300

<-50

MHz

5

ranges

all
dBc>

kHz

land

of

center

mobile

2500-MANUAL

PAGE

2

SECTION-1

FM

Deviation:
Accuracy:
Ext

Mod:

Internal
Output
Reverse

Receive

Mod:

Impedance:

Power

Protection:

to

0
±5%

of

All

EIA

10

Hz

50

ohms
Auto
greater

in/out

20

kHz

FS

tones,

to

10

switch

than

connector

peak

kHz
to

approx.

10

Hz

internal

to

200

10

load

mw,

kHz

at

on

inputs
the

RF

Freq

Range:

Resolution:

Sensitivity:
Bandwidth:

Image

RF

Rejection:

Step
Subtone
Freq

Range:

Resolution:
Mod

Measurements

FH

Deviation:
Accuracy:

FM

Deviation

Freq

Counter

Range:
Counter

Markers:

Modes

400

kHz

100

Hz

10

uv @ 10

10

kHz

to

-50

dB

100

Hz

60

Hz

to

0.1

Hz

0

to

±20

of

±5%

±10%

FS @ 1 kHz

of

kHz

±600

Hz,

available>.

5 kHz

deviation.

to

999.9999

dB

SINAD,

20

kHz

270

Hz

kHz

FS @ 1 kHz

±5

kHz

Accuracy

MHz

typical

from

from

(optional

0

of

to

10

10

kHz

markers

kHz,

to

markers

±5%

20

@

RF

Freq:
Resolution:
Freq

Error:
Resolution:
Audio

Freq:

Resolution:

Power

Meter

Range:
Accuracy:

Display:

2500-MANUAL

30

MHz
1 kHz
10

Hz
10

Hz

10

Hz

1

Hz

0

to

110
watts
+10% FS

999.9999

Vacuum

PAGE

to

999.9999

to

10

kHz @ > 3.0

to

10

kHz

watts,

FS

to

600

MHz

Fluorescent

3

MHz

uv

rec.

auto

r~nging

MHz, +20% FS

signal

11

or

600

MHz

SECTION-1

110
to

Internal

Freq

Range:

Resolution:
Output:

Fixed

Freq:

Accuracy:

Mod

Sources

10

Hz

0.1

1.0
to

0
1 kHz

Time

Hz,
Hz,

1.

Base

to

10
2 kHz

0

10

kHz

Hz

VRMS

±1

to
to

count

1999.9
10

kHz

Hz

Signal

Strength

Range:
Accuracy:
Display:

SINAD

Notch:

Range:
Resolution:
Accuracy:

Impedance:

Measurement
RF

100

Step

Hz

Size:

to
Memory
Stores

Memory

all

Size:
Voltmeter

<Rec.

Units:

999.9999

keyboard

20

Level)

MHz

steps

settings

registers.

60

dB

+3

dB

Vacuum

@1

kHz

to

0

dB

1
+1

dB

alOk

%

Distortion

in

each

(10

at

Fluorescent

30

dB

steps

at

ohms

register

uV

10

uV

12

dB (+3%

to

10

or

dB SINAD

for

mV>

at

system

25%)

storage.

Range:

Input

Impedance:

Accuracy:

Aging

Temp

1.4

Rate:

Stability

GENERAL

Operational

2500-MANUAL

(0

to

50

C):
SPECIFICATIONS
Temp

Range:

+20V DC,

:_lOOk

+5%

+1
+0.

0

ohms

of

ppm/year
2 ppm

to

50

PAGE

FS

20

C

4

VAC

peak,

up

to

50k

Freq

SECTION-I

Power

Requirements:
AC
DC

Optional
able

Battery:

Internal

Recharge-

100/110/220/240

10.5
>12

to

Volt,

15.2
sealed

time

VDC

VAC

lead

±10%,

acid,

50-400

>lhr

cycles

run

Dimensions:

Weight
Standard

w/Battery:

Accessories

Options

10"x6.5"xl5.5"

<22

lbs.

Operation

Manual
Antenna
AC

Power

Parallel
Cellular

Service
Model

Cord

Printer

Test

Manual

300

trunking,

DCS

and

0.1

ppm

DTMF
TCXO

Port

Results

Encoder/Decoder

MTS, IMTS,

formats.

for

analog,

automated

with

digital,

2500-MANUAL

RS-232

Interface

RS-232
mode

Battery,
Protective
Accessories

cover)

Dust

Cover,

PAGE

Interface

12

Volt

Soft

Kit

for

5

for

Cellular

for

rechargable

Cover

(Including

front

panel

Service

Test

mode

Monitor

Front

SECTION-!

Dust

2.1

UNPACKING

AND

INSPECTION

SECTION-2

PREPARATION

FOR

USE

Whe~

unpacking

instrument

material

The

control
operate

If

the

carrier

for

instrument

tests,

in

instrument

and

representative

your

2.2

instrument

POWER

the

instrument,

for

shipping

possible

was

then

accordance

received

your

will

CT

immediately

without

Indianapolis,

800-245-6356

REQUIREMENTS

damage.

future

inspected,

carefully

with

Section

has

Systems

waiting
CT

SYSTEMS I WAVETEK

5808

(317)

Churchman

787-5721

FAX

TELEX

inspect

Save

use.

given

packaged

been

Customer

arrange

for

(outside

(317)

the

the

final

3

of
damaged

damage

By-Pass

IN

46203-6109

(in

788-4197

217124

shipping

shipping

operational

for

this

manual.

in
Service
for

replacement

claim

Indiana)
Indiana)

container

carton

and

shipment,

transit,

representative.

or

settlements.

or

and

and

notify

repair

and

the

packing

quality

should

the

The

of

The
Hz
ground

primary

The

instrument

connection

instrument

an.optional
The

external

on

the

should

rear

be

potential

2.3

ENVIRONMENTAL

The

instrument

rear-panel

2500-MANUAL

power

12

DC
panel.

a

on

feet

operation

sources.

when

can

also

volt

source

Switchcraft

the

sleeve

CONSIDERATIONS

comes

also

is

selectable

The

it

is

be

operated

rechargable

should

The

plug

S-760

of

the

equipped

serve

as

three

connected

battery.

be

connected

(not

or

connector.

with

cord

wraps).

PAGE

for

100/120/220/240

conductor

to

the

from

11.8

to

supplied

equivalent

bottom

1 SECTION-2

proper
VDC

the

and

power

to

"EXT

with

with

rear-panel

cord

outlet.

15.2

the

VAC,

provides

VDC

+12

V

instrument>

the

feet

or

IN"

negative

50/60

with

jack

(the

a

'

J.

The

instrument's

confined

The

instrument

degrees

instrument

working

C

and
is

small
spaces.

is
should

not

size

designed

be

restricted.

used

and

to

in

light

operate

an

area

NOTE

weight

between

where

permit

0

air

easy

degrees

flow

access

C

around

and

to

50

the

Exceeding
may

cause

the

upper

degraded

and

performance

lower

temperature

or

damage

limits

to

the

for

extended

instrument.

periods

2500-MANUAL

PAGE

2

SECTION-2

3.1

INTRODUCTION

SECTION-3
OPERATION

This
Cellular
are
and

3.2
LED

audible
order
keys,

section

Tester/Simulator,

descriptions

3-2),
FRONT-PANEL DESCRIPTION

annunciators

CT

and

error

to

see

the

SYSTEMS I INC.

[l

_______

contains

of

notes

light

tone

identify

following

• I.

operating

Communications

the

front-

on

use

of

features.

to

indicate

sounds

the

if

the
instrument's
descriptions:

___...l]

The

instrument
ments.
Cellular
Monitor

Activates

K~Z

I

source
error

and

user

display

instructions

Service

rear-panels

an

active
makes

functions

settings

LED's

Test

mode

in

tone

of

the
generate

in

for

the

Monitor.

(refer

function
an

eCELLULAR

invalid

and

to

the

e SERVICE MONITOR

indicates

and

on

right

or

Service

operation.

1 kHz

mode.

receive.

modulation

annunciate

Sounds

Model
Figures

or

mode.

entry.

corresponding

TEST

pertinent

measure-

2500

Included

3-1

An
In

2500-MANUAL

AUDIO
SYNTH

•

·~

Activates

recently
frequency

Turns
Sounds

In

ted

phone

In"

on

Cellular

modulation

is

port.

PAGE

audio

set

frequency

in

Hz.

"Modulation

error

tone

Test

outputed

1

synthesizer

­in"

in

receive.

Mode,

to

the
to

the

and

displays

port.

the

cellular

transmit-

"Modulation

at

most

tele-

SECTION-3

I

i.

"!600Hz

± 5·

KHZ.

•

loEvl

~

Activates
or
markers

superimposed

display

in

±5

both

on
Rec.

markers

kHz

off.
an

&

deviation

on
external

Gen.

at

either

Markers

demod

modes.

±600

and

output

oscilloscope

shuts

Hz

are

for

ISINADI

I

voLTs

I

IWATTSI

8

Measures
The

SINAD
and
time

tone

Activates
volts.

SINAD/audio

mode

Measures

IN/OUT

Sounds

Measures
generated
displays

%

distortion

it

is

in

receive

and

port

error

SINAD

reading.

the

button

pressed.

either

Measures

in

RF

power

and

tone

FM

or

received
reading

and

displays

toggles

expressions

Sounds

mode.

D.C.

connector.

displays

in

deviation

between

an

volts

voltage

applied
generate.

RF

carrier

in

Hz.

reading.

each

error

or

A.C.

Displays

at

reading.

of

,

the
and

dB

at

RF

,--~--10

~GG

C!J~G

8IT1

2500-MANUAL

~

DATA
when

Sounds
ing

error

PAGE

KEYS.

preceded

an

error

is

made.

2

Inputs

by

tone

numerical

appropriate

when

programm-

data

key.

SECTION-3

Terminates

Menu

routines

Selections.

numerical

in

Cellular

data.

Steps

Mode.

Executes

thru

Sub

IRFl

~

Displays
prefix

when

Steps

by

RF STEP

up

executes

key.

Steps

ceeded
setting

by

RECALL
used
Menu,
Sub

Routines

automatic

Addresses
SHIFT 6 ENTER -identifies

version.

RF

for

followed

RF

frequency

key.

RF

frequency

by

RF

down

key.

-to

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2500-MANUAL

PAGE

7

SECTION-3

3.3

CELLULAR

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OPERATION

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2500-MANUAL

PAGE

8

SECTION-3

3.3.1

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2500-MANUAL

PAGE

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SECTION-3

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2500-MANUAL

PAGE

11

SECTION-3

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4(4)
5(5)
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19

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14

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MODEL-2500

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AUTOMATIC

SYSTEMS I WAVETEK

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*******************************************

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DATE:
MOBILE
SERIAL

NUMBER

ID
NUMBER

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2356880#
10000

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1234567

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25MHZ

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DATA:

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WTS
WTS

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0200
0300
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PARAMETERS

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NOT

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334

LEVEL"

XlOuV

user>

TELEPHONE

TELEPHONE

FORWARD

2500-MANUAL

PAGE

16

SECTION-3

WHEN

THE

THE

MODEL-2500

TELEPHONE

FOR

TWO

SECONDS

DEVIATION

CELLULAR

WILL

"RINGS",

AND

CAT

THIS

ANSWER

TELEPHONE

DISPLAY

THE

MODEL-2500

THEN

POINT

THE

MEASURE

THE

CALL

IS

LOCKED

"PAGING

WILL
AND

CELLULAR

ON

THE

CELLULAR

ON

THE

CONTROL

MOBILE"

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ST

TELEPHONE

TELEPHONE

CHANNEL,

THE

CELLULAR

FREQUENCY

RINGS)

TO

MOBILE"

AND

PROCEED

WHEN

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"CONNECT"

NOW

This

the

section

Model-2500.
comprehensive
telephone.
cellular

CELL
flow

telephone

CALL
chart:

or a CELL

TO

PROCEED

describes

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routines

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FROM

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PROMPT

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the

manual

manual

after

TO

MOBILE

BEGIN

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THE

APPEARS

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manual

test

that

test

an

allow

operations

initial

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TO

CELL

OR

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SAT

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RF

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ARROW"

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OPERATIONS

test
operations

operations

testing

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provide

many

are

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test

CELL
TEST

MOBILE

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are

TO

summarized

MOBILE

OPERATION

DATA
TESTS

AND

FREQUENCY.
PRESS
KEY

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TO

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(SECTION

that

the
aspects
available

prompt

CALL

"ENTER"

TEST

3.4.7)

are

technician

of

from

in

KEY

available

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cellular

for

testing

a

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the

following

in

with

a

TO

PERFORM

2500-MANUAL

HAND-OFF

DTMF

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ENCODER
MOBILE

THE

MODEL-2500

SENSITIVITY

SINAD

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THE

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TERMINATE
PRESS
PRESS

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OF

AND

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OF

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ARROW"

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ARROW"

MANUAL

PAGE

MEASURE

RF

FREQUENCY

HANDSET

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TEST

EXECUTE

ADJUST

dB

SINAD
KEY

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THE

IS

TO

CONTINUE

CELL ( CLEARDOWN)

KEY

TO

TERMINATE

KEY

TO

RETURN

TEST

OPERATION

17

ERROR

RECEIVER
RF

LEVEL

ACHIEVED.

CALL

TO

SECTION-3

Each
Continue

displayed.

line
display.
from
Therefore,

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of

manual

of

top

ARROW"

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test

to

press

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the

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to

bottom,

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manual

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the

test

VF

display,

manual

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test

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operations

back

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program

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routine

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the

CELL"

back

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until

pressing

the

is

test
top,
to

data

is

test

"DISPLAY MOBILE DATA".

in

the
desired
displayed

designed

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many

is

reached,

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manual

line

to

times

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first

2

of

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be

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ment

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data
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chart.

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(0-7),

cellular
phone,
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cellular

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proceed
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the
with

is
handset

on

selection

view

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RF

all

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current

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the

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serial

the

mobile

readout.

key

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transmit

power

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Model-2500

to

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power

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SAT

cellular

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display

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press

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the

the
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key

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power

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in

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transmitter

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of

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cellular
in

RF

power

to

level

manual

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and
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or

milli-watts,

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flow

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to

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press

manual

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the

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chart.

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deviation

(MIN),

class
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the
test

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quency,
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2500-MANUAL

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to

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18

to

the

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SECTION-3

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test

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new

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phone's

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ed,

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proceed

manual
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telephone.

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instruction

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designed

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all

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pressed
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displays
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the

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cellular

the

measurement.

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to

the

accuracy

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digit

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encoder

keys

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manual

on

telephone
current

current

of

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the

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on

press

test

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As

chart.

frequency

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in

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the

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channel

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telephone

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telephone

manual

and

error

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to

any

to

hand-off

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press

test

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in

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This

function
burst
by
phone.
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chart.
Receiver
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control
LEVEL"
Model-2500.
receiver
front

indicated

Hook-flash

test

of

pressing

be

displayed.

key

this

a

of
button,

panel

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designed

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to

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test

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sensitivity.

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the

Hz
RF

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tone

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the

transmit

tone

generator

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control

change

RF

Level

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verify
telephone.
from

switch

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to

plus

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the

LEOs

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is

hook-flash

the

SAT

output

of

range

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on

detected

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carrier
at

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proper

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level

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"RF LEVEL"

of

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to

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generator

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panel

RF

generator

front

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of

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Model-2500,

complete,

in· the

the

Model-2500

level

possible

RF LEVEL

can

button

panel

of

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consists

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cellular

manual

of

14

by

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output

vernier.

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of

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an

indication

press

vernier

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the
test

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kHz.
using

for

Model-2500

level

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a

400ms

test

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flow

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the

on

testing

as

"RF
the

2500-MANUAL

PAGE

19

SECTION-3

note
of

value
This
The

that

-116
will

three

dBm

may

cellular

may

pe

measured

Model-2500

made

the

since

(.35
cause
show

RF

up

LEVELS

telephone

front

Sinad

reading

the
uv>,

the

cellular

as

available

under

by

connecting

panel

sensitivity

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of
the

telephone

a

RF

cellular

generator

to

lose

a "MOBILE DISCONNECTED"

are

the

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test

"SINAD

will

has

the

AUDIO

not

the
cellular

be

accurate.

received

IN"

telephone

connector.

telephone

output

the

failure

X-luv,
audio

signal

on

and
available,
audio

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is

level

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the
X-.luv.

signal

no

on

the

below
disconnect.
Model-2500.

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to

connection

order

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is

When

key

the

to
Terminate
This

operation
manual
release

gress

nate

from

the

selection

3.3.8

During

to

indicate

displayed,

main

CELLULAR

table:
Message

FAILED

receiver

proceed

Call

operation

order

the
call
in

ERROR

a

cellular

press

INITIAL

to
from
will

tests

to

the

cell

in

the

manual

MESSAGES

a

failure

TEST

VC

sensitivity
the

next
Cell
terminate

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cellular
site.
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test

telephone

in

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"ENTER"

MENU.

test

selection

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the

complete,

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flow

test,

the

test

key

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channel

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current

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chart.

certain

procedure.
to

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complete,
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manual

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ARROW"

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are

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press

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chart.

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DISPLAY MOBILE

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a

pro­DATA

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INCORRECT

LOST

SAT

MOBILE

NO

MOBILE

NO

MOBILE

DCC

DISCONNECTED

2500-MANUAL

CARRIER

RESPONSE

Digital

the

mobile

SAT

color

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frequency

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Mobile

sequence
sequence
error

Mobile

the

has

in

carrier

current

signalled

depending

in

the

Mobile .station

control

channel

Model-2500.

PAGE

20

code

incor-rect.

from

use,

test.

was

channel

did

instructions

returned

mobile

on

this

not

in

not

has

a

disconnect
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may

not

detected

use.

respond

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dis-

test

be

from

SECTION-3

an

on

to

3.4

SERVICE

MONITOR

MODE

APPLICATION

NOTES

This

commonly
followed
controls.
receiver

section

outlines

required

by

a

The

measurements

applications.

description

application

how

or

transmitter

to
of

notes

use
the

the

CT

A

brief

steps

are

grouped
measurements

Systems

overview

to

take

Model

of

and

together

as

each

their

shown

2500

as

in

test
related
either

below:

some

is

2500-MANUAL

PAGE

21

SECTION-3

SECTION

1

RECEIVER

3.4.1

3.4.2

3.4.3

3.4.4

3.4.5

3.4.6

SECTION

MEASUREMENTS

RECEIVER

SENSITIVITY - 12

MODULATION

RECEIVER

RECEIVER
BANDWIDTH

CTCSS

2

DECODER

AUDIO

DISTORTION

DB

ACCEPTANCE

IF

BANDWIDTH

SENSITIVITY

TEST

SENSITIVITY

MEASUREMENT

SINAD

BANDWIDTH

AND

WITH

SYMMETRY

CTCSS

TEST

DECODER

AND

DECODER

TRANSMITTER

3.4.7

3.4.8

3.4.9

3.4.10

3.4.11

MEASUREMENTS

OFF

THE

AIR

RELATIVE

MEASURING

TUNING

SIGNAL

TRANSMITTER

SUB-AUDIBLE

MISCELLANEOUS

MONITORING

STRENGTH

POWER

TRANSMITTER

KEYBOARD

MEASUREMENTS

AND

FREQUENCY

TONES

PROGRAMMING

ERROR

2500-MANUAL

PAGE

22 SECTION-3

SECTION 1

APPLICATION NOlES

RECEIVER

3.4.1

An

distortion

the
not
and

NOTE:
quality

Refer

1>

2)

3)

4)

Receiver

important

audio
be

valid

noise

to

Cable
IN/OUT"

Cable

"AUDIO/IN".
Select
Select

deviation,

MEASUREMENTS

Audio
factor

of

circuits

in

For

audio

Figure

the

Audio

1 kHz

the

since

determining

%

distortion
distortion

antenna

port

GEN

processed
causing

3-3

of
output

mode.

and

i.e.,

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in

proper

SINAD

for

the

3000kHz

combines

sensitivity.
lower

analyzer

the

port

Model
or

adjust

Measurement

recovered

high

distortion,

than

following
of

the

2500.

speaker

1 kHz

if

receiver

the

1%,

with

test

receiver

terminals

max

allowable

alignment

audio.

the

distortion

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greater

procedure.

level

If

problems

12

dB SINAD

factor

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best

resolution.

under

of

receiver

control

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5kHz.

is

to

test

for

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exist

test

with

use

to

to

60%

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signal

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the

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in

lab

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max

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6)

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Adjust

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readout
NOTE:

time

RF

Audio

V =

the

it

VOLTS

level

receiver

Feature,

Power

speaker

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of

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once

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to

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%.

fully

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to

and

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( 1

mV>.

power,

obtain

expressions

a

using

direct

each

2500-MANUAL

PAGE

23

SECTION-3

CT

5YSTE1o4S,INC.

M

WATTS

0

CEU..I..\.AR

0

SERVICE

2

I

3 - I

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7

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RECEIVER

AUDIO

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2500-MANUAL

RECEIVER

PAGE

UNDER

TEST

DISTORTION

-

---------

24

-

=-·

ANT

~

MEASUREMENT

SECTION-3

3.4.2

Sensitivity

-

12

dB SINAD

Sensitivity

if

they

SINAD

into

of

is

The

SINAD

account.

RF

required

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RF

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Signal

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The

is

expressed

Model
results
receivers

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of

analyzed

output.

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is

a

level

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for
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be

truly

unit

2500
the

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accepted

to

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for

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+

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in

quickly

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measure

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definition

12

dB SINAD

of

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measurement
voltage

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dB.

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oscilloscope

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systems

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designed

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user

audio

the

Model

and

these

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uV.

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be

Refer

1)

2)

3)

4)

5)

6)

to

Figure

Connect
the

"RF IN/OUT"

Connect
speaker
and

it

impedance
Select

the

Program
numerical

Select
the
For

the
receivers
example,

specified

Select

the

3-4

for

the

RF

input

the

of

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the

disconnects

must

be

GEN

the

receiver

keys

followed

1 kHz

maximum

if

as

5 kHz

AC

pk

the

(antenna-port)

jack

on

AUDIO

receiver.

the

substituted.

mode.

frequency

modulation

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then

5 kHz X

volts

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IN"

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maximum

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test

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mode

on

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2500.

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the

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ENTER

function

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deviation

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3000

the

procedure.

of

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of

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Hz

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the

and

the

2500.

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speaker

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load

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adjust

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of

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2500

having

level

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receiver

test

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using

for

control.

,s

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Adjust

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specified
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2500-MANUAL

squelch

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by

receiver

the

audio

control

volume

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power

on

the

receiver.

to

achieve

manufacturer.

using

the

PAGE

full
Use

formula:
25

rated
the

audio

internal

power,

voltmeter

SECTION-3

as

2r

v

spk

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spk

for

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Audio

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9)

10)

11)

where

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setting

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speaker

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the

reading

sensitivity

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the

RF

of

voltage

function

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12

of

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dB.

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2500

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on

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on

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for

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the

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expressed

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2500

as

in

the

dB.

for

a

uV

2500-MANUAL

PAGE

26

SECTION-3

0 CEU.ll..AA TEST

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FIGURE

3-4.

SENSITIVITY - 12

PAGE

27

DB

SINAD

SECTION-3

3.4.3
In

Modulation

FM

voice

certain

Acceptance

modulated

reduction

Bandwidth.

Acceptance

receivers

in

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with

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in

acceptance

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the

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PAGE

28

SEC'I'ION-3

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MODULATION

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PAGE

RECEIVER

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TEST

BANDWIDTH

29

ANT

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SECTION-3

; .

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3.4.4

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2500-MANUAL

PAGE

30

SECTION-3

CT

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3-6.

SPK

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PAGE

RECEIVER

UNDER

TEST

AGC

BANDWIDTH

31

AND

ANT

IN

SYMMETRY

SECTION-3

3.4.5

Receiver
Test

Sensitivity

with

CTCSS

Decoder

and

Decoder

Bandwidth

This

test
unsquelch
of

the

from

much

test
desired
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receiver.
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2500-MANUAL

PAGE

32

SECTION-3

CT

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WITH.CTCSS

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DECODER

RECEIVER

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DECODER

PAGE

SENSITIVITY

BANDWIDTH

33

TEST

SECTION-3

3.4.6

CTCSS

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Sensitivity

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required

test.

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2>

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PAGE

34

SECTION-3

CT

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2500-MANUAL

3-8.

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PAGE

SENSITIVITY

35

TEST

SECTION-3

TRANSMI'ITER MEASUREMENTS

Off

the

Air

3.4.7

The

2500

to

999.9999

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MHz

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is

monitoring.

SECTION 2

continuous

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PAGE

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37

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to

Figure

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connect
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power,

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time

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strength

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signal

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to

2500-MANUAL

PAGE

38

SECTION-3

CT

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3-10.

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PAGE

STRENGTH

39

MEASUREMENTS

SECTION-3

I .

3.4.9

Measuring

The

built-in
Model
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2500

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selectable

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2500-MANUAL

TRANSMITTER

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TEST

TRANSMITTER

PAGE

41

RF

OUT

POWER

AND

FREQUENCY

ERROR

SECTION-3

3.4.10

Tuning

Sub-Audible

Transmitter

Tones

described
also

I

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1

The

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what

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consideration

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on

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program

ENTER

the

transmitter

2500.
the

Model

output

instrument,

level

frequency

the
key.

to

desired

under

2500

the

see

to

osci~loscope

the

control

for

a

subtone

test

the

in

to

oscilloscope

horizontal

specifications

for

stable

a

lissajous

lissajous

the

Hz

and

"RF

for

2500-MANUAL

PAGE

42 SECTION-3

CT

SYSTEMS,

INC.

MOOEL.

2500

D

VERT

HORIZ

IN

IN

SINAO

·

VOlTS

WATTS

DEY

4

7

•

1.400

@

2.

5 6

8 9

0

IN

3

ENTER
DEI.IOO

RF

STEP

+

•

SHIFT

AUDIO

SINAD

STORE

RE

CALL:

sue

TONE

CEL.L.
TEST

IN

0 CEU.lLAR
0

SOMCE

OUT

TEST

MONITOR

VOLUME

@

RF

LEVEL

TRANSMITTER

. UNDER .

TEST

OSC

FIGURE

2500-MANUAL

SCOPE

3-12.

TUNING SUB-AUDIBLE TRANSMITTER

PAGE

43

~

TONES

SECTION-3

3.4.11

Miscellaneous

RF

Step

RF

step

application

Size

size

Keyboard

Programming

can

by

using

be

the

Programming

tailored

RF STEP

key

to

as

suit

shown

the

below.

users

specific

ll

2)

3)

Memory

'I'wenty

desired
memory:

l)

2)

3)

To

recall

ll

2)

Select
Enter
Use

and

storage

front

Select

Enter

Select

Select
Select

data

RF

the

the

Recall

a

ENTEH

a

memory

keys.

STEP.

desired

up

or

Operation

r_

egisters

panel

STORE.

memory

the

RECALL

the

desired

step

down

keyboard

location

to

ter:ninate.

register:

key.

size

arrow

< l -

memory

in

keys

20)

settings.

from

l

register

MHz

to

are

to

and

step

available

To

20

(from

press

the

store

using

l

RF

the

to

ENTER.

frequency.

for

retaining

a

setup

data

20)

using

in

keys.

the

3)

4)

Recall

1~e

operator

pressing

Cacti

RECALL

vate)

the

may

followed

register

scroll

by

thru
the

by

up

pressing

the

or

down

· ENTER.

stored

arrow

settings

keys.

by

2500-MANUAL

PAGE

44

SECT10N-3