Motorola R-2001D Operator's Manual

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MOTOROLA TEST

EQUIPMENT

PRODUCTS

LIMITED WARRANTY

e

"product")that

ape

'odofone

(EXCLUDES

(I)

yearfrom

EXPORT

are

SHIPMENTS)

manufactured or distributed by

Motorola

Communications

dateofshipment against defects in material and workmanship.

purchaser only.Inthe eventofa defect, malfunction, or failure during the periodofwarranty,

ep

ace

the product providing that

e productisreturned to

of

dateofshipment (packing listorinvoice) must accompany the returnofthe defective product.

Motorolaat1313

oduct to Purchaser shallbeprepaid by

Motorola

Motorola.

receives

written notice specifying

the

natureofthe defect

East Algonquin Road, Schaumburg,IL60196 transporta-

Group

Parts

(a)

T

Ib)

Ic)

In

the

event~l0 ola elecu moduleorsuba5sem remain in PRESS OR

TY,

for

eo

IMPLlED.I~CLL:DI~G

ARE

EXCL

I e

DED.

~

to

.

it

a

ep

ace module

..e1,'i<=hle components or modules are broken;

a~..

epa'

a defecti-e product by replacing a module or subassembly,

or

econditioned replacement moduleorsubassembly. Only the unexpired warrantyofthe warranty product will

AS\'

accordance with the procedures described in the operating instruction;

51Be.

abuse, damage, accident, negligence, repairoralteration.

spe<'ial,

incidental, or consequential damages.

or

subassembly.

I~PLlED

EXCEPTASSPECIFICALL

WARRANTYOFFITNESS FOR A

SUPPORT SERVICES

For

'er,i,eonyour.

lotaro/a

test

eqUipment in the U.S. contact the

Test

Equipment Service Cenrer, Schaumburg,

Schaumburg. Illinois 601%orcall theTet Equipment Service Hotline: 800/323·6967

1-3J2-576-70~5.

Outside the

l'.S.

con

a;:-t

your

nearest

\10torola representative.

MODULE EXCHANGE PROGRAM

Modular de1i\'ery. Outside the '.S. omact your nearest

,onslruclion

The grams for

Motorola

o!'

he

Motorola

products

storedinsemiconductor

certain reproduceinany grams

containedinthe

any

manner shall copyrights, use

that

without

notbedeemed10grant

patentsoroatent

arisesbyoperallonoflawinthe

R_Iallow'

describedinthis

exclusive

form

the

copyrighted

Motorola

the

express

field replacementofindividual assemblies. Contact the

~10torola

memoriesorother

rights

products

written

either

applicationsofMotorola,

representative.

COMPUTER

SOFTWARE

instruction

manual

media.

for

copyrighted

computer

program.

describedinthis

permissionofMotorola.

directlyorby

implicalion,

except

saleofa

product.

COPYRIGHTS

may

Lawsinthe

programs, Accordingly, instruction

Furthermore,

estoppel,orotherwise,

for

the

include

United

any

manual

normal

Motorola,atits option, may replace

Y SET

FORTH

PARTICULAR

HEREIN.

ALL

PURPOSE OR

1313E.Algonquin Rd.,

during

normal business hours. In Illinois call

Tesl

Equipment Service Center for pricing

copyrighted

States

including

copyrighted

may the

non·exclusive,

and

the

Motorola

other

exclusive

Motorola

computer

countries

righttocopy

computer

notbecopiedorreproduced

purchaseofMotorola

any

license

royalty

free

such

WARRANTIES

MERCHANTABILI-

EPS·30828-0

pro-

preserve

or

pro·

in

products

under

the

license

to

EPS-34440·B

defective

EX-

and

Specifications

(~,

Motorola,

• Printed in U.S.A

Prlvste·Line,

subjecttochange

and

.•

Digital

;g'

1985 Motorola Inc.

without

Prlvate·Une

notice.

are

trademarksorMotorola,

Inc

.

MOTOROLA

Communications Sector

maaa

lIaElEI

.allEl

?OWER

Ct.·

J •

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...

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.....

F'\JNCTION

"'.

,.

"-

,

" •

PrintedinU.S.A.

1985

COMMUNICATIONS

ANALYZER R·2001 D

Motorola

Equipment Products

1313E.Algonquin Schaumburg,lL60196

Test

iii

SYSTEM

Rd.

63P81069A66-B

7/15/85

PHI

AI

MOTOROLA

Communications

Sector

INC.

SAFE

HANDLING

OF CMOS

INTEGRATED CIRCUIT DEVICES

Manyofthe integrated circuit devices used in communications equipment are tary Metal Oxide Semiconductor) type. Because high open circuit impedance, CMOS ICs to

damage from static charges. Care must be taken in handling, shipping, assemblies in which they are used.

though

Even

IC

CMOS overvoltage in the hundreds encountered in an operating system. elements distribute static charges circuits, decreasing the chance

inputs, the protectioniseffective only against

CMOS circuits of

the modules eveninasystem.

~

To

avoid damagetocircuits, observe the following

handling, shipping,

protection devices

canbedamaged by improper handling

and

of

the CMOS (Complemen-

are

and

servicing them

are

of

volts range such as are

In

a system, circuit

and

load the CMOS

of

damage. However,

servicing precautions.

of

their

vulnerable

and

the

provided in

2.

Whenever possible, avoid touching any electrically conductive parts hands.

3.

Normally, circuit modules can be inserted

removed with power applied to the unit. However, check the tions diagram to insure there are no objections tice.

carpeted areas, dry environments, clothing (silk, nylon, etc.) because they contribute to static buildup.

be grounded. equipment to the circuit module

INSTALLATION

of

the manual as well as the module schematic

4. When servlcmg a circuit module, avoid

5.

All electrically powered test equipment should

Apply

of

the circuit module with your

and

MAINTENANCE

to

and

certain types

the ground lead from the test

sec-

this prac-

before connecting the

or

of

test probe. Similarly, disconnect the test probe prior to

1.

Prior

to and while servicing a circuit module, particularly after moving within the service area, momentarily touch

grounded surface. This will discharge any static charge which may have accumulated servicing.

both hands to a bare metal earth

on

the person doing the

removing the

6.

it

is

desirabletolay itona conductive surface (such as a

sheet

of

through

groundlead.

If

a circuit moduleisremoved from the system,

aluminum foil) whichisconnectedtoground

lOOkofresistance.

NOTE

Wearing (Motorola static buildup during servicing.

When wearing Conductive Wrist Strap, be careful near sources The good strap will also increase the danger lethal shock from accidentally touching high voltage sources.

©

Motorola,

Inc. 1982

U.S.A.

Conductive

No.

RSX-4015A) will minimize

WARNING

of

ground

providedbythe wrist

~t11rmfi@Ql11

Wrist

high voltage.

Strap

1301E.Algonquin

of

If

the aluminum foilisconnected directly

ground,

to trical shock from contacting the foil same time as

7.

When soldering, be sure the soldering iron

grounded.

Priortoconnecting jumpers, replacing circuit

8. or

components,

necessary in the replacement device), be sure to discharge any static buildup as described in procedure exist across the ly

one

hand

CMOS

w«

n

ltJifi'il~

Road, Schaumburg, II. 60196

v

device

#@If\VIfi@@d

touching CMOS pins (if this becomes

human

be usedifitisnecessary to

and

WARNING

be cautiousofpossible elec-

at

other

electrical circuits.

of

an

integrated circuit

1.

Since voltage differences can

body, itisrecommended

touch

pinsonthe

associated

board

wiring.

68P81106E84-C

12/10/82-

the

that

PH!

is

on-

9.

When device, leave ductive cuit module.

pulse generators, etc.) should be connectedtoCMOS

foam

10.

All low impedance test

replacing a

the

device in its metal rail

until it istobe inserted into

CMOS

equipment

integrated circuit

containerorcon-

the

printed cir-

(such as

device inputs cuitry. Similarly, such low impedance be disconnected

11. the factory will be packaged in a conductive material. Any modules being another (aluminum foil CONDUCTIVE modules.

after

powerisappliedtothe

before

poweristurned

Replacement modules shipped separately from

should be

may

MATERIAL

transported

wrapped

be used).

from

in a simlar material

NEVER

for packaging these

CMOS

equipment

off.

One

USE

should

area

NON-

cir-

to

J

~

vi

R·2001D

Specifications

Communications

System

Analyzer

Signal Generator Mode

OperatinglDisplay

Stabilization

SPECTRAL

Exlerna

Frequency

Externalllnternal

Frequency

DOUBLE

Carrier

SWEEP GENERATOR

Adjustable sweep width from chronized

Modes:

FREQUENCY

Range:

Resolution:

Accuracy:

Time:

OUTPUT

Attenuator:

Range FM:

Range

AM:

Accuracy:

PURITY

Spurious:

Harmonics:

FREQUENCY

MODULATION

Deviation: Residual Residual

MODULATION

External

SIDEBAND

Suppression:

to

FM:

AM:

III

nterna

I

Range:

Modes:

AMPLITUDE

Range: Range:

Input:

Modes:

SUPPRESSED CARRIER

Range:

MODE

internal scope display

Monitor Mode

Frequency

FREQUENCY

Input

to

999_9999

Spurious

Range: 1 MHz 10999.9999 MHz

Resolution:

Accuracy:

ERROR

Indicator:

Sensitivity:

(over

the4MHz

MHz

range)

Response:

Monitor Mode (Continued)

AMIFMICWfSSB Monllor AMIFM/CWIDSBSC Generale

Signalling Simulator Speclrum Analyzer Duplex Generator Memory Tables Frequency Counter Digital Vollmeler Waltmeler IF Display Oscilloscope Signal Sfrength Meter SINAD/D,slortion Meier

10

kHz109999999

100

Hz Refer10AccurAcy01master oscillator .1

Sec

16

dB variable plus10dB steps over13ranges

1

I'V 101

1 I'V to .4 VRMS

± 3

dB

maximum

posilion.

- 40 dBc

-15dBc

0-75 kHz peak

20Hzmax @ 30010 3 kHz Irom f

1.0% max. @ 300to3 kHz from f

10

20 kHz. ± 3 dB

5 Hz

Internal, external, microphone or all Simultaneously

01080%

5

Approx. 150 mV lor

Internal. external. microphone or all slmullaneously

1 MHz to 500 MHz

100 Equal10that01masler oscillator

Autoran9ing for Irequency error measurements on 1.0 kHz.

10.0 kHz and resolution lor Irequency error less than 100 Special funcfion control will quency readout to 1 15 (narrow band ± 6 kHz mod. acceptance) 70

OdB

Irom 1 to 500 MHz

Hz

1010kHz,

-15dB FREQUENCY COUNTER

10

kHz to10MHzata tixed sweep rale.

Hz

I'V

lor 10 dB

,.V lor10dB

± 100 kHz mod. acceptance)

- 40 dB typical image al

10dBat

MHz

VRMS

with

slep

In

any other state

± 3 dB

80%

CRT

display. Resolution ±

1000

kH7

Hz

EtA

SINAD

EIA

SINAD

±21.4MHz

L.O harmonics

attenuatorin0

c

lime

base

10Hz

lull scale r:ln9"s. 1

allOW

+

(Wide

107

direcl fre-

band

MHz

resolution

dB

Syn-

Hz Hz.

SIGNAL

General± 4 dB maXimum

SPECTRUM ANALYZER

DUPLEX GENERATOR Frequency

Frequency

Normal

Period

Auto

DEVIATION

MEASUREMENT

AM

MEASUREMENTS

RF WATTMETER

Frequency Range: 1 MHz to 1 GHz

Dynamic

Frequency

Deviation Range: o

OSCILLOSCOPE

External

Synchronization:

Input

Counting

Tune (SCAN LOCK)

Acquisition

Scales:

Accuracy:

Peak

Deviation

Limit:

MODULATION

Range:

Accuracy:

STRENGTH

METER

Range:

Sensitivity: Selectivity:

Range:

Scales:

Accuracy:

Protection:

Range:

Width:

Scan

Sensitivity:

Offset:

Resolution: 5 kHz

Accuracy:

Output

Level: - 35 dBm minimum

Response: 5Hz10

CRT Size: 8 em x

Response:

Vertical

Input

Ranges:

Sweep

Rates:

Range:

Display:

Sensitivity:

Frequency

Range:

Display:

Range:

Time:

Accuracy:

1.

10.

100

±5%01

Sel via keyboard10100Hzresolution(0kHz to 999kHz).

tion and will be aClive

oto 100%

±5%of reading

1 MHz

- 100 dBm to + 52 dBm. combined specilica-

lionofanlenna and transceiver ports 30 kHz Max @ 3 dB bandwidth

1

9.99.99.9,

± 10% Irom 1 Watt to 125 Watts

Over·temperalure

75 100 kHz per diVision to 1 MHzper division conIlnuously adjustable

- 95 dBm minimum

oMHz to

± .002%

DC 10

1

division

Internal. normal. and aulomatic mode Will; adjustable trigger level.

10Hzto 35 MHz 5 di9it autoranging 50 mV minimum

Determination

10Hz-100 4 digit auloranging 10100

In to aUlomatically lind and Ihen tune signal above - 30 dBm Operates from 1 MHz to 5 sec typical10less than 1 sec.IFIimlled scan

is

+ 1

kHz full scale

reading

AUdible alarm Indicates limit condi

10

9999999

Walls

to 125 Watls

125 Watls

dB minimum

±

10

to±20

kHz peak

20 kHz. ± 3 dB

10

cm

105

MHz. 3 dB point

mV.

100

us.10us.

ulillzed.

mV.

1 ms. 1

kHz

the monitor mode. the unil has the capaollily

18Hz

Hz01aclual Inpul frequency

Specifications

in

all Monilor Modes.

MHz

MHz and fixed

inlO

50 ohm load

lV. 10V per div.

mS.Ol

103kHz.

conlinuedonnext

:±-

45

MHz

sec. .1 sec. per

3 digil auloranging

10

an ;!lPUI

page

vii

R·2001 D Communications System Analyzer

General (Continued)

DIGITAL VOLTMETER

ModesofOperation:

Readout:

DC

Accuracy: ± 1%01lull scale ± 1

AC Accuracy:

AC Bandwidth:

SIGNALLING

SIMULATOR

Frequency Range:

Resolution:

Output

Input Impedance:

Level:

SINADIDISTORTION

METER

Input Level:

SINAD Accuracy: ± 1dBal12dB

Distortion

Range: 1%to20%

Accuracy:

ANALOG

SYNTHESIZER

TUNING (AST)

Step Size: Variable steps Irom 3200

Calibration:

TIME BASE

Standard TCXO:

Optional Ovenized

High

Stability:

Auloranging 3 digit display 1

fUll

± 5%

50Hzto20kHz

Encode

1

kHz

Single

Two-Tone

Universal10tone sequential

Digital sub·audlble squelch Base Stallon Mobile Telephone

516 SeleCI

5 Hz Hz decode

0.1 Volts

3 10

05V10

0.5% distortion 2% distortionin10%1020% range

360°ofrolation.

32

Aging:

Temp

Aging:

Temp:

10.

10% range

Hz1032

100.300 vall

9999.9

GHz

per

scale

of

lull scale

and

Decode eapabilily for

fixed lone

Tone

Variable Frequency

sequential

Tone

IMTS MTS 2805

Hz

lOne

paging

V Signalling

to

9999.99 Hz encode, 5.0Hzto

Hz. 5 Hzto9999.9 Hz

RMS

K ohms

into

minimum

10 Volts

paging

Remote

600 ohm

RMS

SINAD

LSD

in1%to

steps per 3600rotation (approximately)

± 1 x

10

- , per year

± 1 x

10-,maximum error over the

10

+55°C lemperature range

± 1 x

10-'

±

.05

0°to+ 55°C temperature range. (Warmup

quency within

per year

x 10-,maximum error over the

10

± 5 x

10-,of

20

minules)

final Ire·

General (Continued)

Power and Environmental

AC,

100

VAG

10

130

VAG

or

200

VAC

10

260

VAG

Hz

baltery

option

cellular

I

Battery Option:

Dimensions:

Model

Nomenclature

R-200l D

Basic

R·200l OlHS

With

R·2002D R·2002DIHS High R·2004D

With

R-2004DIHS High

With

R·2005D R-2005DIHS High

Weight:

Model

With

IEEE·488

Motorola

swilch selectable47Hz

DC:

11.0to+.16

+

13.6

8.25 121emx

355

pack

high

stability

option

stability

oscillator

DES

option

stability

oscillator

SECURENET

stability

oscillator

ValiS.50minutes typical

In. higll x

pounds

39.~

1550

cm x 50.8

(basic

cover accessories

oscillator

and IEEE·4BB Bus

and

option

and

VDC

external Inpul Ill.

model)

Motorola

1063HZand 400

Wide

x 20.00 ill. deep

em}

excluding

(16.1

kg)

option

DES

SECURENET

option

R·200BD

With

cellular

option

R-20080lHS High

With

R-2009D R·2009DIHS

option R·20100

WithUKcellular R·20l001HS High R·20llDWith R·2011DIHS High

option R·202l0

With

R·2021

DIHS High

option

R·2045D

0°

I

With

R·2045DIHS High and SECURENET

NOTE: Factory set 220

stability

oscillator

IEEE·4BB

With

high

Bus and

stability

option

stability

oscillator

IEEE-488 Bus and UK

stability

oscillator,

Motorola

Trunked Radio

stability

DES

stability

oscillator

and SECURENET

oscillator

options

Voll

models

and

cellular

options

oscillator,

IEEE-48B Bus and

and UK

cellular

option

IEEE·488 Bus, and UK

option

and

Motorola

and

Motorola's

are

also

available. Add "/220"

option

Trunked Radio

options

DES

to model number.

Optional

RTp·l002A

Accessories

Baltery

Pack RTL·4056B Protective Canvas Cover RTL·4065A Transit Case RTL-4075A RTA-4000A

RF

Detector

Telescoping

Probe Antenna

Vlll

OPERATOR'S MANUAL

COMMUNICATIONS SYSTEM ANALYZER R-200ID

TABLE

OF

CONTENTS

Limited Warranty Safe Handling Specifications

of

Table List List List

Scope

Service Test Equipment Service Centers Replacement Parts Orders Area Installation Packing Initial Set-up Battery Pack Trace Rotation Adjustment Accessories

Description Front Rear Panel Bottom Panel

General Power Section

Self-Test Keypad CRT System Warnings Function Section Modulation Section Fixed Code Synthesizer Modulation/Function External Level Display Section Generate/Monitor Generate RF

RF

Generate Mode

RF Analog Synthesizer Tuning (AST)

Contents

of

lllustrations

of

Tables

of

Abbreviations

of

Manual

Parts

Offices

Panel

Display Screen

I KHz Tone

Level

Output

Scan

Level

Control

Section 1

Section 2 - Description

Section

Metering

- Introduction

3 - Operation

Page

ii

v

VII Special Function Mode

ix

XI

xii

XIII

RF Sweep Generator Monitor Mode

Special Function Control Codes Auto

Tune

Mode Scan Latch Mode Monitor Section

Volume And Squelch Controls Off-The-Air Monitor Signal Strength Meter

I-I FM Demodulation I-I Audio Filters

1-1 1-2 1-2 1-3 1-3 1-3 1-3 1-3 1-4

2-1 2-2 2-10 2-10

3-1 3-1 3-1 3-1 3-2 General Decode 3-2 3-2 3-3 3-3

3-3

3-3 3-4

3-4

3-4 3-4

3-5

3-5 3-5

AM Demodulation Single Sideband Demodulation Audio Monitor Modulation Spectrum Analyzer Duplex Generator RF Memory Entry With Memory Table Entry Without Memory Table Preset Turn-On Signaling Sequence Signaling Sequence Menu Decode Mode Screens PL

Decode

DPL

Decode

A/B

Encode Two-Tone Sequential Paging 5/6

Tone Encode

Cap

Codes

5/6

Tone Decode Select V Encode Select V Decode General Encode

Mobile Telephone Signaling IMTS Mobile Originated IMTS Base Originated MTS Mobile Telephone 2805 Base Originated

Tone Sequence Tone Remote (Encode) Tone

Remote (Decode) Frequency Counter (DVM/DlST) External Wattmeter Intermediate Frequency (IF) Mode Oscilloscope Seclion Scope

ACorScope

Addendum - Self Test Displays

Digital Voltmeter/Distortion Mode

DC

Page 3-5

3-5

3-6 3-7 3-8 3-8 3-8 3-8 3-8 3-8 3-8 3-9 3-9 3-9 3-9 3-9 3-9 3-10 3-10 3-11 3-11 3-11 3-11 3-11 3-11 3-12 3-13 3-13 3-13 3-13 3-14 3-14 3-14 3-15 3-15 3-15 3-15 3-

J6 3-16 3-16 3-17 3-17 3-17 3-17 3-18

3-18 3-19 3-19

3-20

3-20 3-21

ix

--

Section 4~Applications

Shop

Service

Receiver Sensitivity Test,

Audio Receiver Sensitivity Test, 20 DB Quieting Squelch Sensitivity Test Audio Audio Modulation Acceptance Bandwidth RF Preselector Shape Receiver Frequency Adjustment

FM

Basic

& Deviation

"In-Line" Audio Distortion Audio Frequency Response

Setups

12

DB SINAD,

Distortion

Power

Frequency Response

Basic Terminated Measurements Off-The-Air Measurements

Output

Transmitter Tests: Power, Frequency,

Power

Test

and

Bandwidth

Measurements

Page

4-1

4-3 4-5 4-7 4-7

4-9

4-11

4-13

4-15 4-15 4-15 4-16

4-19

4-21

Page

AM

Modulation Test 4-23

AM

Modulation Linearity Test 4-24

IF

Analyzer

Community Repeater Modulation 4-26 Wire Line Remote Base Modulation 4-28

Wire Line Remote Base;

Bandpass Cavity Tuning 4-36 Cavity

Desensitization Test: In-Service Duplexer 4-44 Ferrite Isolator Test 4-46

Service Request

DISPLAY

Phone Phone Transmit Receive Line Measuring Levels Across A Balanced Generating Signals Across A Balanced Line 4-34

& Duplexer Tuning; Bandpass

Passband

AdjustmentofReject Notch AdjustmentofReject NotchOnTransmit

Line Levels 4-30

Line

Input

Adjustment

Form

Line Levels 4-30

Lin~

Adjustment

On

Receive Leg 4-40

4-25

4-30 4-30 4-32

4-38 4-38

Leg 4-42

4-49

x

LIST

OF

ILLUSTRATIONS

Figure

Communications System Analyzer R-2001D

I-I

Communications System Analyzer R-2001D

1-2

Typical Packaging - 3-37

Communications System Analyzer

2-1

Front

Panel Controls, Indicators,

and Connectors

2-2

Rear Panel

3-1

Power Controls 3-2 Keypad 3-3

Cathode

3-4

Function Section

3-5

CW

3-6

AM Display

3-7

SSB Display

3-8

SWP

3-9

Modulation Section 3-10 Display Modes 3-11

RF

3-12

Generate Mode Metering Display

3-13

RF Scan Control 3-14

Monitor Mode Metering Display

3-15

Monitor Section

3-16

Modulation Display 3-17 Spectrum Analyzer Display 3-18

Duplex Generator Section 3-19

Duplex Generator Display

3-20

RF Memory Display

3-21

Signaling Sequence Menu Display

3-22

Private Line Decode Display

3-23

DPL

3-24

Two Tone

3-25

5/6

3-26

5/6

3-27

Select V Encode Display

3-28

Select V Decode Display

3-29

General Encode Display 3-30 General Decode Display 3-31

IMTS Mobile Originated Display

3-32 IMTS Base Originated Display

3-33

MTS Mobile Telephone Display

3-34

2805 Base Originated Display

Ray Tube Display Screen

Display

Section

Decode Display

(A/B)

Encode Display Tone Encode Display Tone Decode Display

Page

I-I

1-3

2-1 2-9 3-1 3-1 3-2 3-2 3-2 3-2

3-3 3-3 3-3 3-4 3-4 3-4 3-5

3-6

3-8 3-9 3-9

3-10

3-10 3-10 3-11

3-12 3-13 3-13 3-13 3-14 3-14

3-15 3-15 3-15 3-16 3-16 3-16 3-17

111

Figure

3-35

Frequency Counter Display

3-36 AC DVM Display

DC DVM Display

3-38

Distortion Analyzer Display

3-39

External Wattmeter Display

3-40

Oscilloscope Section

3-41

Destructive RAM Test

3-42

Non-volatile RAM

3-43

Checkerboard

3-44

Non Destructive RAM Test

3-45

Checksum

4-1

12

DB

SINAD Test Setup and Display

4-2

20

DB Quieting

4-3

Squelch Sensitivity Test Setup

4-4

Audio Frequency Response;

EIA Standard RS-204C

4-5

Probe

Setup

4-6

Frequency Adjustment Setup

4-7

Transmitter Tests Setup

4-8

Transmitter Test Setup;

Power Measurements

4-9

Audio Distortion Setup

4-10

Audio Frequency Response Setup

4-11

Audio Frequency Response;

EIA Standard RS-152B

4-12

AM Modulation Test Setup

4-13

AM Modulation Linearity Test Setup

4-14

Analyzer IF DISPLAY

4-15

Community Repeater Modulation Setup

4-16

Modulation Setup; Remote Base

4-17

Phone

4-18

BALUN Setup; Measuring Levels

4-19

BALUN Setup; Generating Signals

4-20

Bandpass Cavities Setup

4-21

Duplexer Passband Adjustment Setup

4-22

Duplexer Adjustment Setup;

4-23

Duplexer Adjustment Setup;

4-24

Desensitization Test Setup 4-45

4-25

Ferrite Isolator Test Setup

Line Levels Setup

Reject Notch On Receive Leg Reject Notch

Pattern

Error

On

Error

Screen

Transmit Leg

Screen

Error

Page

3-17 3-18 3-18 3-19 3-19 3-20 3-21

3-21 3-21 3-22 3-22

4-2 4-4 4-6

4-8 4-10 4-12 4-14

4-17 4-18 4-20

4-21

4-22 4-24 4-25 4-27

4-29 4-31 4-33 4-35 4-37 4-39

4-41 4-43 4-47

Xl

LIST OF TABLES

Table

2-1

3-1 3-2

3-3

3-4

3-5

3-6

Controls, Modulation/Function

RF Special Audio Valid

Valid

Output

Function

Filter PL DPL

indicators,

LevelAtAntenna

Control

Characteristics

Codes

and

Connectors

Availability

Port

Codes

Page

2-2

3-3 & 3-4

3-4

3-7

3-9

3-12 3-13

Table

3-7

Cap

Codes

3-8 Select V

3-9

iMTS

3-10

ToneBFunctions

3-11

Valid

Display

3-12

External

Sequence

Error

Input

Resolution

Wattmeter

Specification

Messages

Frequency

Versus

Elements

Page

3-14

3-16

3-17

3-18

3-19

--./

xii

'----'"

LIST OF ABBREVIATIONS

A

AC AM ANT AST ATTEN AUTO

BALUN

BATorBatt

BFa

BNC B.O. B.O.S.

BW

C Cal CCIR

C&E

cm CMOS

CONN Cont CRT CW

dB dBc dBm DC Demod DEV DISC

Dispr DIST Div

DIy

DPL

Dplx

DSBSC DVM

E/D EEA

EIA Ext

FM FREQ FWD

Ampere Alternating Amplitude Antenna Analog Synthesizer Tuning Attenuation Automatic

Balanced-to-unbalanced Battery Beat Frequency Oscillator

Bayonnet Type

Base Originated

Behorden Organisationen mit Sicherheitsaufgaben, (a tion)

Bandwidth

Celsius Calibrate

International

mittee Communications

Motorola) Centimeters

Complementary Metal Oxide Semiconductor Connect Continuous Cathode Continuous

Decibel

Decibel (referred

Decibel (referred to

Direct

Demodulation

Deviation

Disconnect

Dispersion

Distortion

Division

Delay

Digital Private Line, (a tered

Duplex

Double

Digital Voltmeter

Encode/

Electronic Engineering Association

Electronics Industry Association

External

Frequency

Forward

Current

Modulation

Connector

German

Radio Consultative Com-

Ray

Tube

Wave

Current

trademark)

Sideband Suppressed Carrier

Decode

Modulation

and

Electronics

to

carrier)

ImW

Standards

into 50 ohms)

Motorola

Associa-

(part

of

regis-

GEN

GHz Horiz

HPFL HS Hz

IC

ID IDC

IEEE

IF

1M

IMTS in.

I/O

Kohm

kg

KHz LED

LPFL Lvi

MAX MHz MICormic MIN

M.a.

MOD MOD. MONorMon us ms MSEC Mtr MTS MV uV mW

NAorN/A NB NEG

No.

#

ORIG

peT

PL

PN

pas

xiii

or

mV

Generate Gigahertz

Horizontal High Pass Filter High Stability Hertz

Integrated Circuit Identification Instantaneous Institute Engineers Intermediate Frequency Intermod Improved Mobile Telephone System Inches Input/Output

Kilohm Kilograms Kilohertz

Light-Emitting Diode Low Pass Filter

Level

Maximum Megahertz Microphone Minimum Mobile Originated Modulation Modified Monitor Microsecond Millisecond Millisecond Metering Mobile Telephone System Millivolts Microvolts Milliwatt

Not

Applicable Narrow Negative Number Number

Originated

Percent Private mark

Part

Number

Position

Number

Deviation

of

Electrical

ulation

Bandwidth

Line, a

Motorola

Control and

Electronics

registered trade-

pos

+/-

R REF REV RF RMSorrms Rptr RS

Positive Plusorminus

Resistor Reference Reverse Radio Frequency Root-Mean-Square Repeater Receiver Specification

TCXO

I

TEL Temp TN Trig TX

UHF UUT

Temperature lator Telephone Temperature Tone Trigger Transmitter

Ultra High Frequency

Unit

Under Test

Compensated Crystal Oscil-

SEC

or

sec SEL SENS SEQorseq Sig Signal

SINAD SSB

STD SW Switch SWP syncs

Second Select Sensitivity Sequence

Ratio Single Sideband

Standard

Sweep Synchronizes

of

+Noise +Distortion

Signal

Noise +Distortion

V VAC Volts Alternating VCE Voice VDC Vert Vertical VRMS Volts (root-mean-square) VSWR Voltage Standing Wave Ratio

W WB

I

XY

I

ZVEI

Volts

Volts Direct

Watts Wide Bandwidth

(Select Any Valid Number) Zentral-Verband der Elektro-Industrie, (a

German

Current

Electronics Industry Association)

Current

'----""

xiv

SECTION 1

INTRODUCTION

1.1

SCOPEOFMANUAL

This manual contains information for using the portable Communications System Analyzer R-2001D shown in figure and functions for the technician to completely monitor and service radio communications equipment in the shop and in the field.

1.2 SERVICE Motorola Test Equipment Service Centers service all

test equipment supplied by the Motorola Communications Sector. The Center maintains a stock equipment replacement parts and a complete library service information. The Center performs most inwarranty repairs. tured by Motorola, the original supplier performs repairs under the Center's direction. The Center performs out-of-warranty repairs on a time and materials basis Equipment Service Center, toll free at (800) 323-6967 or

at (312) 576-7025 in Illinois. Frequently, under the direction troubleshoots equipment to isolate a defective module. I The Center then ships an exchange module immediat

1-1.

The Analyzer incorporates many devices

of

For

some equipment, not manufac-

at

competitive rates. Contact the Motorola Test

of

the Center via telephone, a technician

,

),;~

I

'\

L;I'~

¥

fO

/11

original

tc,'

;)1/6

1

'

)y.

£

of

I'

MOTOROLA TEST

MOTOROLA Test Equipment Service Center 1313 Schaumburg, Phone: 800-323-6967 Phone: 312-576-7025 (Illinois) MAMS: NAGOU

TTY:

MOTOROLA Test Equipment Service Center 2333 B. Utah Ave. El Segundo, CA 90245

Phone: 213-536-0784

MOTOROLA

Hawaii Service Center

99-1180 Iwaena St.

Aiea,

Phone: 800-487-0033

TTY:

Ii

6{~

~

EQUIPMENT

C & E

E. Algonquin Rd. /

IL

910-693-0869

WEST COAST

C & E, INC.

HI

96701

63212

PARTS

60196 / I

,/"r::'

SERVICE CENTERS

I

COMMUNICATIONS

(a

a

III

II

1.11

•

FIGURE

SYSTEM

1-1

II

El1

II II II

II

1-1.

ANALYZER

0-

v"

---=---

e«--I{oo

.-

~

:'::.-'-

...

-.,

•

i-.

·

'-'--'"

•

110'.."""

.,

....

..

"-_'

•

,,"_DC

'"

\

.,c...

-

.-

·

•

·

R·2001D

..

...

""""

,,"'L"_

--"'-'

..

c

-~

O"l.llPI._

•1_...

•

'_I

•

1_-

·

'-"'-"

MOTOROLA TEST EQUIPMENT SERVICE CENTERS

MOTOROLA AUSTRALIA PTY. LTD. Test Equipment Service Center 666 Wellington Rd. Mulgrave, VIC 3170 Melbourne

Phone: 3-561-3555 Telex: 32516 MOTOCOMA AA Cable: MOTOCOM MELBOURNE MAMS: FEMEL

MOTOROLA CANADA, LTD. Test Equipment Service Center 3420 Pharmacy Ave. Unit

11

Scarborough, Ontario MIW 2P7

Phone: 416-499-1441 TTY: 610-492-2713

MAMS: NAWIL

MOTOROLA FRANCE S.A. Test Equipment Service Center

Zone Industrielle de la Petite

Montagne Sud

14

Allee du Cantal

CE

1455

F-91020 Evry Cedex

(6)

Phone:

07779025

Telex: 600434F MOTEV

MAMS: FAFEV

MOTOROLA

GmbH

F andV.ABT. Frachtzentrum FZF

6000 Frankfurt Main/Flughafen West Germany Attn: METEC

(0)

Phone: Telex:

6128-702130

(0)

4182761 MOT D

MOTOROLA SOUTH AFRICA (PTY.) LTD. Motorola House 5th St.

P.O.

Box 39586 Wynberg Phone: 011-786-6165 Telex: 422-070-SA Cable: MOTOROLA JOHANNESBURG MAMS: FESAF

1.3 REPLACEMENT PARTS ORDERS Send orders for replacement parts to the nearest

Motorola Area Parts Office or Test Equipment Service Center.

Be

sure to include the complete identification

number located on the equipment. Direct inquiries to

the Area Parts Office including requests for part number identification and test equipment calibration or repair.

MOTOROLA AREA PARTS OFFICES

MOTOROLA C

& E PARTS

1313E.Algonquin Rd. Schaumburg, IL 60196 Phone: 800-323-6967

312-576-3900

MOTOROLA AREA PARTS OFFICES

EASTERN AREA PARTS

85

Harristown Rd. Glenrock, NJ 07452 Phone: 201-444-9662 TWX: 710-955-5602

EAST CENTRAL AREA PARTS 12995

Snow Rd.

Parma,

OH

44130 Phone: 216-433-1560 TWX: 810-421-8845

GULF STATES AREA PARTS 1140

Cypress Station

P.O. Box 73115

TX

Houston,

77090 Phone: 713-537-3636 TWX: 910-881-6392

MID-ATLANTIC AREA PARTS 7230 Parkway Drive Hanover, Maryland 20176 Phone: 301-796-8763 TWX: 710-862-1941

MIDWEST AREA PARTS 1313

E. Algonquin Rd. Schaumburg, IL 60196 Phone: 312-576-7430 TWX: 910-693-0869

PACIFIC

P.O.

SOUTHWESTERN AREA PARTS

Box 85036 San Diego, CA 92138 Phone: 714-578-8030 TWX: 910-335-1516

SOUTHEASTERN AREA PARTS P.O.

Box

368

Decatur, GA

30031 Phone: 504-987-2232 TWX: 810-766-0876

SOUTHWESTERN AREA PARTS P.O.

Box 34290

3320 Belt Line Rd.

TX

Dallas,

75234 Phone: 214-620-8511 TWX: 910-860-5505

WESTERN AREA PARTS

1170 Chess Drive, Foster City

San Mateo,

CA

94404 Phone: 415-349-8621 TWX: 910-375-3877

MOTOROLA CANADA LTD. National Parts Department 3125

Steeles Ave., East Willowdale, Ontario M2H 2H6 Phone: 416-499-1441 TWX: 610-491-1032

Telex: 06-526258

...

1-2

ALL

OTHER

COUNTRIES:

MOTOROLA INC. International Parts Dept.

Schaumburg,

IL

60196

Phone; 312-576-6482

TWX: Telex:

910-693-0869 722443

Cable: MOTOL PARTS

1.4 INSTALLATION

U.S.A.

propriate connector on the Analyzer's rear panel. Connect the cord's other end to the power source.

For

AC,

use a grounded 3-wire 100-130 VAC or 200-260 VAC

power source. On the back

switch, select either 110 or 220 position.

the

LINE

R-2001D/220 or R-2002D1220

switch, as ordered.

panel's

will

two-position

The

Units

be pre-set for 220

LINE

factory sets

ordered as

VAC and will have a 3.0A fuse installed. Install a 3A fuse for

110VAC

operation and a

lOA

fuse for DC

operation.

• PACKING Foam pieces protect the Communications System

Analyzer packed inside a fiberboard carton. figure 1-2, the unit

is

then packed in a larger container

As

shown in

for additional protection. Save the packing containers and materials for future use.

OPERATION

1101220

12

VAC

VDC

Remove accessories from the cover

FUSE

3A

lOA

PART

as

NUMBER

65-20404 65-10266

needed. Insert the whip antenna into the Antenna port located in the Duplex Generator section

of

the front panel. Pull the Antenna control located in the RF SECTION. POWER switch, located on the front panel, to the On position. When the Oven Ready indicator illuminates, the frequency standard stabilizes and the Analyzer

ready for use instantaneously (with standard TCXO). Before operating the Analyzer, carefully study the func-

of

tion and purpose

each control and feature. Become

familiar with the operating procedures described in this

manual.

CAUTION

When installing the Analyzer in a vehicle, fuse the DC supply line close to the vehicle's battery. The DC-lOA

on

fuse, located

the Analyzer's rear pane!, protects it

against overload but does not protect the vehicle.

• BATTERY PACK Attach the battery pack

to

the Analyzer's rear panel with 2 clips and 2 screws. Align and slide the pack's mounting clips into the slots on the mounting brackets On

the left side. Align the captive screws with the mounting holes nect the power plug to the connector at the

on

the right side

and

tighten them. Con-

top

right

the rear panel.

Turn

is

of

FIGURE

1-2.

TYPICAL

PACKAGING-

COMMUNICATIONS SYSTEM ANALYZER

INITIAL

•

SET

-UP

Place the Analyzer on a workbench in the shop mobile repair unit. Lower the bail underneath to raise the Analyzer for easier viewing. Open the two latches the bottomofthe cover, lift and slide the covertothe

to

side

Take the power cord (AC

separate the hinges. Remove the front cover.

or

DC)

thatisstored in the

cover. Attach the cord's female connector to the ap-

or

on

1-3

•

TRACE

Set DISPLAY to

ROTATION ADJUSTMENT

Gen/Mon

Mtr. Adjust intensity and

focus control to obtain a comfortable viewing

brightness. Remove the fine screws from the Analyzer's rear panel and remove the top panel. To re-align a tilting display screen, locate R-88 the third potentiometer located

on

the

A-2

module behind the front panel. Insert the tuning tool in the resistor and slowly rotate it while observing the front the tool until the bargraph line horizontal graticule line. Replace the panels

of

the screen. Rotate

is

parallel with the center

and

the screws.

tighten

• ACCESSORIES

SUPPLIED

FRONT COVER - The front cover protects the front panel and its components during transit or while the Analyzer is not in use.

The

front cover stun:s

the

cord, antenna, cables. and other equipment needed for

on-site servicing. PN #15·80335A70. ANTENNA - The fused BNC connected antenna re-

PN

ceives off-the-air signals. BNC to Type N Adapter.

DC POWER CONNECTOR KIT.

In-Line Wattmeter Adapter.

#TEKA-24A.

PN

#58-84300A98.

PN

#RTL-4055B.

PN

#RPX-4097A.

power

• MODEL OPTIONS

• Cellular Test Functions - Model R-2008D provides capability in one test instrument for servicing traditional

PM

eommunje~tjons

~nd.

with

the

cellular option, the

new cellular radio systems:

•

CELL-TO-MOBILE

SIGNALING

ACCEP-

TANCE TESTS

• MOBILE-TO

CELL

SIGNALING

ACCEP-

TANCE TESTS

• AUTOMATIC RF TESTS

• MANUALLY SELECTED RF TESTS.

MANUAL - The Operator's Manual contains descriptions and instructions for properly using the Analyzer. PN

#68P81069A66-0.

Oscilloscope

& Meter Probe - A probe

(xl),

attachments, provides general servicing needs. PN

#RTL-4058A.

POWER

CORD - The three-conductor cord powers the Analyzer by AC and charges the optional battery pack. Its right-angle design allows the Analyzer to stand on end. PN

#30-80336A36.

SUN SHADE - Snap the Sun Shade over the CRT

screen to observe displays even in bright sunlight. PN

#15-80335A55. TEST MICROPHONE. 12

VDC POWER CONNECTOR KIT.

OPTIONAL

•

ACCESSORIES

BATTERY PACK - A rectly to the back of

continuous operation. Built-in circuitry charges the

of

battery when the power switch tion.

If

battery power falls below11volts, a warning ap-

PN

#RTM-4000B.

PN

#RPX-4097A.

13.6 volt battery attaches di-

the Analyzer to provide50minutes

isinOff

or Standby posi-

pears on the CRT. The battery can be installed in the field

but

it cannot be used in conjunction with IEEE-448

Interface Bus or Blower. DELUXE TELESCOPING ANTENNA.

PN

#RTP-1002A.

PN

#RTA-

4000A. 600

OHM

Use for

LINE

MATCHING

600

ohm balanced lines.

TRANSFORMER PN

#RTL-1003A.

PROTECTIVE CANVAS COVER - A rugged, padded fabric cover protects the Analyzer from excessive field wear.

PN

#RTL-4056B.

with

• High Stability (HS) Oscillator - Use this oscillator to improve stability over the standard TCXO time base to

+/-5 X 10-

temperature range

8

maximum error, over the

of

0 to 55°C. A front panel LED (Oven Ready) indicates when the ovenized crystal has stabilized.

MODELS (See Specifications) R-200ID Basic Model R-200ID/HS R-200lD/HSI220 R-2002D/HS R-2002D/HSI220

R-2008D/HS R-2008D/HSI220 R-2009D/HS R-2009D/HSI220

• IEEE-488 STANDARD INTERFACE BUS This option enables using the Analyzer

as

a programmable measurement instrument. For example, Analyzer Model R-2002D when combined with the suitable programmable controller and applications soft-

of

ware becomes the heart tem. Control or monitor all

an automated RF test sys-

of

the Analyzer's functions via the IEEE Bus. Perform full sequential test routines, quickly and repetitively, with little operator

interaction.

• MODULE SERVICE KIT The Extender Board Kit aids servicing the Analyzer's

modules with printed circuit board edges. Use with A2, A3, A4, A5, A6, A PN

#RPX-4379A.

7,

A9, and A12 modules.

RF DETECTOR PROBE.

TRANSIT CASE.

PN

#RTL-4065A.

PN

#RTL-4075A.

1

1-4

SECTION 2

DESCRIPTION

POWER

On

.BElIl

Dc

011

lIaElEI

dB

~~~~--,--:;:::----:~-

-

m.IIEI

•

ltlll!!"!III)

fo(v-

"HI

0""

J 5 I - +

(

.15

Vert

OSCILLOSCOPE

e.,

v

§O~~

(:o,e."",

I

o /

/c.,

Aulo

/C

PaS'llon

Norm;ll

mSec

t~:

'

E"

Hom

eltl!10••l

-

DISPLAV

• Gcn

•

Modl,I.llfo"

Spt;l(;t

OUpl~)

•

SI,ll,IIl!l9

•

Fr£l'(J

DVM

E~t

"

ScoppAC

Scop~

.......

,_-MONITOR

Squelch

011

11I1"9~

low

DotlruodOl,lt

MonMh

An.ttVltlf

MemOtt

Gaumer

Olsr

\"hmtTlewr

Opl.

oc

Gen

s.g

eQ

L'I'

•

WIde

Narrow

FUNCTION

•

o

SWP.Ol·lMt-h.

----..

VoluMe

8W

BFO

FM

CW

AM

sse

S'NP

MomlOI

OSB$C

'·IQMH7

__

Code

Mm

ll<Hz

Oll

--

Mod

SYnlh

LCIlt;1

Out

MODULATION

lvl

FIGURE 2-1. FRONT

PANEL

CONTROLS, INDICATORS, AND CONNECTORS.

2.0 DESCRIPTION

The

R-2001D Communication System Analyzer shown in figure 2-1,isa portable test instrument designedtomonitor

service radio communications equipment over the frequency rangeofI

trols, indicators, connectors

errors,

and

performs a varietyoftests normally associated with the following devices:

and

their functions.

The

Analyzer generates signals, measures modulation

Spectrum analyzer Duplex offset generator Modulation oscilloscope Frequency counter

AC/DC

RF

digital-analog voltmeter

wattmeter General purpose oscilloscope Multimode code synthesizer Sweep generator Signaling encoder I decoder Signal strength meter Automatic scan latch counter.

MHz

to 1

GHz.

Table

2-1

lists the Analyzer's con-

and

frequency

and

2-1

TABLE 2-1. CONTROLS, INDICATORS,

AND

CONNECTORS

ITEM DESCRIPTION

Power

Batt indicator

AC

indicator

Oven Ready indicator

KEYPAD

FRONT

Three-position toggle switch

LED (red)

Twelve-key pushbutton keypad

FUNCTION

PANEL

(figure 2-1)

On position energizes all circuitry.

Standby position removes DC from all circuitry except the frequency standard

and

battery charger.

At off, the battery chargesifequipment is connected to AC

power source.

Illuminates when equipment uses DC power.

Illuminates when equipmentisconnected to an

source. PositionofPOWER

switch has no effect dicator. Equipment automatically switches to source when connected to AC line voltage.

Illuminates when optional frequency standard oven has stabilized. Continuously illuminated with the

TCXO

quency standard.

Enters variables into microprocessor memory and onto CRT

screen, selects variables from the memory for display,

changes previous entries.

AC

an

power on

in-

power

fre-

~

othrough 9

CRT

• Intensity

o Focus

Dispr/Sweep Control

Line cursor key

Horizontal cursor key

Numerical keys

Cathode Ray Tube

Stacked concentric

potentiometers:

Small center knob

Large outside knob

Potentiometer

Moves the cursor down only to the next available line on the screen, skips preset permanent entries, from the last line it returns to the top line.

Moves the horizontal cursor left to the next available position

that

may be changed. From the last left position, the

cursor moves to the far right with the next entry.

Enter a value directly

or

select a value stored in the

memory.

8 cm x10cm screen displays all functions, generated monitored, in both analog and digital form. Also displays all control settings and numerical values, enteredorpreset.

Controls display intensity.

Controls display focus.

Controls the frequency span (1-10 MHz) during Spectrum Analyzer SWP

DlSPLAY.Provides sweep width control during

FUNCTION (0.01-1

MHzor1-10 MHz).

~

or

RF

Scan Control

Analog Synthesizer Tuning

(AST)

Manually scan any displayed frequency by rotating this control clockwiseorcounterclockwiseatthe rateof32 frequency steps per revolution. Positionofdisplay cursor determines step size.

2-2

'---'"

TABLE 2-1. CONTROLS, INDICATORS, AND CONNECTORS

DISPLA

ITEM

Y indicators Twelve LED's

DESCRIPTION

FRONT

FUNCTION

PANEL

(figure 2-1)

Illuminate one

operation the equipmentisperforming

the CRT. Select by pressing DISPLAY

1.

Gen/Mon

plays center frequency,

put displays center frequency, error,

2. Modulation - The in generate mode mode.

3.

Spectrum Analyzer trum trum IF signals, measure transmitter harmonics, check spurious response tion.

at

a time to indicate the functionortype

section.

Mtr

- In generate mode, the

modulation depth. In

and

received carrier modulation depth.

or

and

operating center frequency. Use the Spec-

Analyzer to identify interference, trace RF and

and

displaying

oneofthe arrow keys under the

CRT

output

CRT

demodulated audio in monitor

CRT

receiver local oscillator radia-

power,

monitor

input

displays modulation audio

displays the

and

RF

mode, the

power, frequency

RF

CRT

spec-

of

on

dis-

out-

CRT

4. Duplex Gen -

and

quency putormonitor the received carrier. selects the reading. In this mode, the Analyzer simultaneously generates duplex radio servicing. vides enhanced capability to service equipment such

as repeaters, car telephones

telemetry portables.

5.

RF Memory - Stores frequencies

6.

Signaling Sequence - Simulates encode tone sequence for all code synthesizer modes. Press an

arrow key in the Modulation sectiontoselect one

of

the six modes. Encode in generate function

decode in monitor function.

7. Frequency puts monitor

quency

frequency counter tors, pager IF's, input

modulation depth on the generator out-

and

Counter

in

either generate function, measure transmitted carrier fre-

and

other signals less

signals.

displays duplex generate fre-

frequency

codes uptoa totalof32 entries.

to

PL

and

modulation depth

FUNCTION

and

The

Duplex

and

displays programmable

- Measures10Hzto35 or

monitor

than35MHz.

measure

frequencies,

switch position

receives signals for

Generator

emergency medical

and

function. In

and

set offset oscilla-

and

other external

MHz

on

pro-

decode

and

in-

Use the

2-3

TABLE 2-1. CONTROLS, INDICATORS,

AND

CONNECTORS

ITEM DESCRIPTION

FRONT

PANEL

FUNCTION

(figure 2-1)

8.

DVM/DIST

a. DVM - The digital voltmeter displays

AC/DC

voltage readings (digital and analog) with the

CRT

corresponding dBm value on the either generate

or

monitor function. Select AC

screen, in

DC with the display cursor and keypad. The

screen displays battery voltage and a signal's true

RMS at the front panel DVM jack. Use the meter to check and set power supply voltage, bias level,

and audio level.

b. DISTORTION - This mode automatically meas-

ures fixed frequency

EIA

Sinad/Distortion

(signal

to noise and distortion ratio). The Analyzer

generates a

1 KHz tone

Measure distortion

of

AM

of

known quality.

or

PM transmitter modulation. Use the distortion meter for a comprehensive checkofa receiver's performance.

9. Ext Wattmeter - Select the element and the screen displays the forward and reflected power passed

that

through

element mounted in the RTL-4055 watt-

meter adapter.

or

FUNCTION

PUNcnON

switch

indicators

Two-position toggle switch

Six LED's (red)

10.IF- The screen displays the 700 KHzIFsignal from the monitor receiver for

AM

and SSB receiver servic-

ing.

11. Scope

AC-The

screen displays the voltage wave-

form applied to the vertical input (AC coupled).

12.

Scope

DC

- The screen displays the voltage wave-

form applied to the vertical input (DC coupled).

or

Select either generate

monitor function.

I. Generate - The equipment generates and outputs an

RF

signal.

2.

Monitor - The equipment monitors input signals with the input terminated into the receive mixer. Use this position for off-the-air monitoring.

Indicates the modeofsignal the equipmentisset up to gen-

or

erate under the

monitor. Select by pressing oneofthe arrow keys

I.

FM

FUNCTION

- Equipment generates or monitors frequency

section.

modulated signals.

'-.--

2-4

CW

2.

- Equipment generates

an

unmodulated RF signal (continuous wave). Monitor position provides only frequency error measurement.

TABLE 2-1. CONTROLS, INDICATORS,

AND

CONNECTORS

MODULA

ITEM

nON

switch

DESCRIPTION

Three-position switch

FRONT

toggle

PANEL

Controls

FUNCTION

(figure 2-1)

AM~Equipment

3. modulated

4.

SSB/DSBSC Suppressed signalisnot urements. with the use

5.

SWP

signal having a sweep width

trolled by tion mode.

6.

SWP above MHz.

the

1.

Cont-Continuous erates repetitive cycles.

signals.

Carrier

calibrated.

Monitor

1-10

MHz-Equipment

the

has

no

0.01-1 except sweep

Code

generatesormonitors

- Single Side signal.

SSB

of

the

BFO.

Dispr

/Sweep

effect,

MHz-Equipment

Synthesizer

equipment

width

Band/Double

The

Use it

only

mode

of1to10MHz,

control.

limits are 0.01

modulation

amplitude

Side

Band

levelofthe

for relative meas-

receives SSB signals

generates a swept

remainsingenerate

performs

signal

Monitor

source.

output,

generated

con-

posi-

as in 5.

MHzto1

gen-

RF

2.

Off-No

sequences.

3.

Burst returnstoOff.

a.

PL,

b.

DPL,

Tone

c.

d.

Tone

modulation

-

Generates

ToneA,ToneBOutputispresent as long as

DPL

Inv

Sequence

Remote

generated.

a single cycle,

switchisheld in Burst.

DPL as switch DPL switchismoved position. turn-off when switchismoved ConttoOff.

Outputisa single signaling sequence.

Outputisa cess sequence; leaves Aata low level mit-type the Off.

Terminates

spring

turn-off

code

switchisreturned

codeaslong

is

held

output

Burst

code

is

tone

remote

commands

loaded,

down.

to

of

output

for

code

when

Cont

DPL

from

Tone

trans-

until

ac-

to

2-5

TABLE 2-1. CONTROLS, INDICATORS, AND CONNECTORS

Code

Synth

indicators

ITEM

Mode

DESCRIPTION

LED's

Six

(red)

FRONT

PANEL

(figure 2-1)

When

illuminated, it indicates the selected_Select by pressing MODULATION

code

from the keypad

select from theRFMemory

1.

PLlDPL PL

- Selected

KHz

DPL

- Selected Digital

Maximum

7.

2.

PLlDPL PL

- same as

DPL

- Inverted

Line code.

may

exceed 7.

ToneAindicator

3. for

output.

keypad

on

FUNCTION

section.

indicator

Private

code

numberis777.

Inv

indicator

above

Maximum

Enter

the

Tone

code

synthesizer

oneofthe

Enter

on

the

display.

outputofselected Digital

code

illuminates when

Tone

A & B frequencies from the

Memory

arrow

the

PL

frequencyorDPL

Oen/Mon

Line frequency

Private

numberis777.

display.

Line

No

digit

ToneAis

Mtr

keys

outputtoI

code

under

display

output.

may

No

selected

mode

the

or

exceed

Private

digit

DlSPLA

switches

FUNCTION

switches

Code switches

Y select

Synth

select

Mode

select

Two-pushbutton

....

T

Two-pushbutton

switches

4.

ToneBindicator for

output.

5.

Tone

Sequence isatone the

Tone

6.

Tone

Remote

is

the sequence for a

set B for

Selects dicated by the

Selects the type ate Operates

Selects the the DlSPLA

the

function tobedisplayed by the

1.

- moves the selectionupone

2.

- moves the selection

or

monitor

the

Code

Synth

Y select switches.

illuminates when

indicator

signaling sequence. Select the sequence

Memory

indicator

command

DISPLAY

or

modeofsignal

as indicated by the

same

way as the

Synthesizer

Mode

LED's.

illuminates when the

display.

illuminates when the

remote

toneonTone

LED's

station.

.

down

the

DISPLAY

output Operates

ToneBis

Set A for

memory

equipment,

stepata time.

one

stepata time.

equipment

FUNCTION

select switches.

mode

as indicated by

the

same

selected

----..-'

output

on

output

guard;

display.

as in-

will gener-

LED's.

way as the

Code

Synth

Lvi

control

Potentiometer

Controls MOD

2-6

the levelofCode

Output.

Synthesizer

for

modulation

or

'--------

TABLE

2-1. CONTROLS, INDICATORS, AND CONNECTORS

ITEM

Ext Level control

1 KHz Level control

Mic connector

Ext

Mod

In connector

Out

Mod

MONITOR

Volume control

connector

section:

DESCRIPTION

FRONT

Potentiometer

PotentiometerIswitch

4-pin connector Pre-emphasis and

IDC

are used

BNC connector

Potentiometer

Iswitch

FUNCTION

PANEL

(figure 2-1)

Controls modulation level and

other

external generators). SwitchatfulJ

wise position disables external modulation inputs.

Internal I KHz tone modulation level control. Switch

counterclockwise position disables I KHz modulation tone.

Microphone input. Provides microphone bias

TO

TALK

RTM-4000 microphoneorhandset.

External modulation signal input.

Output combined).

Controls speaker

(GENERATE) connection to equipment. Uses

connector for all modulation signals (all signals

output

of

external input (microphone

level.

counterclock-

and

at

full

PUSH

BW switch

BFO control

Sig Lvi indicator

Squelch control

Image/Dplx toggle switch

Out

Demod

connector

Two-position toggle switch

PotentiometerIswitch

LED

(red)

Potentiometer

Two-position switch

BNC connector

IF

In monitor mode, selects

mod

KHz tance. In Gen, FM mode selects modulation range: 0-100 KHz deviation in WB or 0-25 KHz in NB.

BFO tion. in use.

Squelch indicator.

Adjusts squelch threshold level, full counterclockwise posi-

tion disables squelch.

NOTE; Monitor sensitivity level use) as the control quieting point.

In duplex generation mode, controls the duplex frequency

output grammed frequency. In quency

programmed monitor frequency to remove image interference.

Receiver audio

acceptance. Narrow BW

on/off To

and

beat frequency control for sideband recep-

minimize interference,

for above (High)orbelow (Low) the receive pro-

of

the local oscillator injection aboveorbelow the

output.

bandwidth. Wide BW

is

± 5 KHz

turn

off

the BFO when not

is

greatly decreased (for high-

is

increased clockwise beyond the

monitor

mode it selects the fre-

mod

is

accep-

± 100

2-7

TABLE

2-1.

CONTROLS,

INDICATORS,

AND

CONNECTORS

ITEM

OSCILLOSCOPE section:

Horiz switch

Horiz vernier control

Ext Horiz

Trig Level

DESCRIPTION

FRONT

Seven-position rotary switch

Potentiometer

BNC connector

Stacked concentric potentiometer and switch

FUNCTION

PANEL

(figure 2-1)

When in the oscilloscope mode, selects the horizontal sweep rate or external horizontal input.

Horizontal sweep rate vernierorexternal horizontal input

gain vernier. Calibrated positionisfully clockwise.

Allows external horizontal inputs for oscilloscope. High input impedance.

Selects oscilloscope trigger level and trigger mode. Center

knob selects the leveloftrigger. Outside (largest) knob controls the trigger mode. In Auto position, continuous sweep with no vertical input signal, syncsonvertical input. Normal position, no sweep unless vertical inputispresent,

syncsonvertical input.

CAUTION

During Tone Sequence mode, entering a scope trigger delay

prevents normal operationofscope triggering.

'----,

Position controls

• Vert

o Horiz

Vert switch

Vert Vernier control

VertiSinad/Dist DVM/Counter

In

connector

Concentric

potentiometers

Center (small) control knob Controls the vertical positionofthe

Outside (large) control Controls the horizontal positionofthe

Controls the posItIOn oscilloscope mode.

of

the CRT display, when in the

CRT

display

CRT

display

knob

Four-position rotary switch Oscilloscope operation uses values marked to the right

the switch, indicating volts per divisiononthe CRT. Modulation display mode uses values marked to the leftofthe switch, indicating range for calibrated FM deviation. This switch also controls Frequency Counter sensitivity.

Potentiometer Vernier gain control for vertical inputs to the

the oscilloscope mode. Calibrated position

CRT

when in

is

fully

clockwise.

BNC connector Signal input to the equipment for the following operations

(one megohm input impedance):

1.

External vertical for oscilloscope operation

2.

SINAD/Distortion Meter

'--.......-

of

3.

Digital Voltmeter

4. Frequency Counter

2-8

'--..-/

TABLE 2-1. CONTROLS, INDICATORS, AND CONNECTORS

ITEM

RF SECTION:

RFIn/Out

RF Level Variable

control

RF Level Step attenuator

Ext Wattmeter

DUPLEX

Output

connector

GEN

connector

switch

DESCRIPTION

FRONT

Type N connector

Potentiometer

14-position ganged atten-

uator

and switch

Connector

Two-position toggle switch

BNC connector

PANEL

FUNCTION

(figure 2-1)

RF input in monitor mode, RF

Vernier control Push for in

Ten dB per step control mode. Also serves as RF input level step monitor and spectrum analyzer modes.

Allows input from Motorola ST-1200 series inline wattmeter elements for measurement and ward and reflected transmitted power.

Select either is

enabled with switch On.

Output

RF

AM

generate mode may result in distorted output.

connector for duplex generator

ofRFoutput

In/Out

OnorOff. Duplex

port. Exceeding the Am Limit marking

output

level. Pull for antenna port.

of

RF

output

in generate mode.

output

level in generate

CRT

displayoffor-

from

DUPLEX

output.

attenuator

port

in

Antenna

Port

Fused BNC connector PN

#09-80378A51

Connector for the whip antenna.

FUSE REPLACEMENT PROCEDURE:

Place a male BNC connectoronthe

of

pair the male BNC connector. Unscrew the connector all the way,

fuse pliers to remove the defective fuse and replace it with a 0.10 A mini-fuse,

slip-joint pliers to grab onto the knurled portion

Turn

is

plugged into the female center pin. Use a needle-nose

PN

#65-80377A61.

antenna

counterclockwise to loosen.

off

the front panel. The

port. Use a

of

FIGURE 2-2. REAR

2-9

PANEL

TABLE 2-1. CONTROLS, INDICATORS,

AND

CONNECTORS

LINE

AC

DC

10

MHz

AC3A DC

FAN

CELL

POWER

lOA

ITEM

power control

STD

POWER

BUS

DESCRIPTION

Recessed switch

Connector

BNC

Connector

Line fuseholders

Connector

Bus connector

REAR

PANEL

(figure 2-2)

Select

Primary

Input/Output panel.

AC

and

OPERATION

1101220 VAC

Power

Placement installed (R-2008D).

FUNCTION

primary

AC

power input.

DC

power

for10MHz

voltage, either 110 Vor220 V line.

input

port

and

reference frequency. See

DC line fuses:

FUSE

~

12

VDC

lOA

connector for the cooling fan.

of

I/O

connector when cellular service

battery charger

PART NUMBER

65-20404

65-10266

output.

bottom

option

-------

is

Frequency

10

MHz

Standard

control

Recessed switch

BOTTOM

PANEL

Select either the internal10MHz external10MHz

source applied to the

frequency

panel connector. This switch makes the portanoutput orasan

when operating

input

otherwise.

from

standardoran

appropriate

rear

panel10MHz

the internal

rear

standard

2-10

'---

3.0

OPERATION

• GENERAL

The Communications System Analyzeriseasy to use.

Connectors, controls, and indicators are conveniently and logically arranged in functional groups outlined in

on

the front panel.

red useful applications the front panel. clearly explains these applications and how to access

them by manipulating the keypad.

organized presentationofmeasurement results. A nonvolatile memory conveniently stores the into the system by the operator. warning messages and audible alarms to ease operation and minimize errors.

3.1

POWER

•

POWER

The Analyzer operates on

100to130

capable the rear panel to select either input from convenient external battery source operates from to +

16

Watts installation instructions for the Motorola battery pack that

attaches to the rear panel and provides approximately shows a three-position toggle switch located to the right of

the keypad on the front panel and used to control the

Analyzer's power supply.

• ON The

On,

energizes all circuitry except the battery charger.

• SELF-TEST When the power switchisfirst turned on, the Analyzer

performs an internal check

possible trouble. the course screen to indicate the nature some guidance for troubleshooting operation.

SECTION

FIGURE

VACor200to260 VAC,47Hz to 400 Hz

of

115 Watts. Use the recessed LINE switch on

Motorola

V, 6.5 amps maximum, with not more than 90

DC

input. Refer to Section Iofthis manual for

50 minutes continuous operation. Figure

or

full-up, posItIOn

of

this self-test, a message displays on the

The

Analyzer incorporates many

that

are not evident

The

appropriate sectionofthis manual

The

On

Slnnnhy

OcOfl

B.ll1

AC

3-1.

POWER

battery pack RTP-1002Aorany

If

the system detects an error, during

CONTROLS

ACorDC. AC canbeeither

110or220 voltage. DC

of

its own circuits to detect

of

the trouble and provide

by

examining

CRT

displays

data

system provides

the toggle switch

and/or

continued

SECTION 3

OPERATION

• SELF-TEST DISPLAY EXAMPLES:

an

entered

+

11

3-1

V

3-1

• STANDBY In Standby

nected to AC power, the battery charger continues to

operate and power standard.

DC

•

In the full-down position DC nected to operates.

• LED INDICATORS AC LED indicator illuminates whenever AC power

connected to the three-pin power connector on the rear panel. Batt (battery) LED indicator illuminates when-

ever

nector on the rear panel. AC and DC indicators never illuminate together. The system switches automatically between AC and DC, with preference for

present. Oven Ready LED indicator illuminates automatically when the internal frequency standard has stabilized and the system

• KEYPAD The

keypad shown in figure 3-2 has a down arrow key to move the cursor vertically on the to move the cursor horizontally,

number 0[09.

to the first allowable position to the left lower allowable line when the down key will wrap

the left key to move the cursor left to the next allowable position. the left key

REFER

ADDENDUM

AT

OF

THIS

PAGE

or

center position, if the line cordiscon-

is

applied to the internal frequency

OFF

AC

power, only the battery charging circuit

DC

powerisconnected to the DC

allmll

TO

THE

END

SECTION

3-21

Off,

if the line cordiscon-

is

ready to operate accurately.

,

IIIIElEI

11111111

FIGURE

Wllt:1l moved down, the cursor will move

data

entry area.Ifthe cursorisat the lowest

around

If

the cursorisat the most left position when

is

pressed, the cursor will wrap

3-2. KEYPAD

CRT,

a left

and

a key for each

is

pressed, the cursor

to the uppermost allowable line. Press

POWER

ACifboth are

on

around

arrow

the next

to the

con-

key

is

most

right

positiononthe numbered system bered key is pressed the system replaces numberonthe set, with

rectly places the decimal

input

frequencies, timing

MONITORFM

-77.3

keytoenter

and

onto

the

screen, over which the display

the

numberonthe pressed key.

frequency for

information

DBM

INPUT

ERROR

same

line. Select

numeric

CRT

display screen.

point.

Use

RF

andIFgenerators,

for

--)553.9999

LEVEL

KHZ

information

The

the

keypadtoenter

paging systems, etc.

MHz

30.2 uV

+23.7

and

press a

into

the

Whenanum-

an

existing

cursor

system

private line

cor-

attenuatorinthe reduce load

is

the

input

warning.

0 dB position.

signal level

ro"'CTION

G<"n(!r;thl

MonltOf

FM

_

cw

e

AM

•

Ste

osase

SWP

'.10

SWP

01.,

and

I~H,

MHz

Use thus

the

attenuator

remove

the

to

over-

-15

-99.9

-100

DEV

ALARM

CATHODE

•

CRT

DISPLAY

The

CRT merics, a information,

CRT

continuously

tings,

and

both

analog

autoranging

calibration

line, ing the into

another

nent

information.

right-hand

lower sity

and Rotation display screen.

o

DEV

KHZ

o

07.0

KHZ

FIGURE

RAY

TUBE

SCREEN

screen (figure 3-3) displays fixed

movable

measurements

measured

focusofthe

Adjustment

and

system

and

digital

markers,

value.

mode,

Use the

cornerofthe

cursor,

displays all functions,

digital forms. readouts.

the

display. See Section 1

3-3.

DISPLAY

operator

generated

(generatedormonitored)

Bargraphs

Each

bargraph

and

intensified segment show-

When

the Analyzerisswitched

CRT

instantly displays all perti-

dual

control

CRT,toadjust

procedure

to

+

15

+99.9

.1"Ie-nilU'"

Focu"

+100

SCREEN

alphanu-

enterable

data

re-align a tilting

numeric

outputs.

control

aid the

has a base

locatedatthe

the inten-

for

Trace

The

set-

in

FIGURE

3.2

FUNCTION

Figure 3-4 shows with the toggle switch selection keys -upor

LED's:

FM

CW

AM

SSB/DSBSC

SWP

1-10

MHz

SWP

.01-1

MHz

MONITORCW

--.-

DBM

-15

mm

3-4.

FUNCTION

SECTION

the

front

panel

(GenerateorMonitor),

down,

FREQUENCY CONTINUOUS

AMPLITUDE SINGLE SIDE

CARRIER

SWEEP1MHzto10 SWEEP

INPUT

ERROR

and

SIDE

BAND

0.01

LEVEL

KHZ

•

o

SECTION

FUNCTION

two

six

modes

MODULATION

WAVE

MODULATION

BAND/DOUBLE

SUPPRESSED

MHz

--)101.1000

with their

MHz

to1MHz

MHZ

-44

section

arrow

---.- W

+

15

• SYSTEM

The

plicationofhigh level energy BNC

generator

where the systemisautomaticallyinpower mode, milliwatts switches monitor transceiver,anaudible ing

appearsonthe tery power, improp.er measurements,oroverheated audible

ceeded in

plays for

measurement input below

WARNINGS

Analyzer provides

connector

the

mode.

alarm

on

the

strong

levels below

-10

provides

output

monitor

dBmatthe

antenna

applicationofRF

When

CRT.

sounds

mode.

CRT

in placeofthe

RF

input

error.

-40

protection

protection port.Atthe transceiver

the

Analyzer

too

alarm

Displays also

attenuator

when

An

levels which

The

warning

dBmatthe

transceiver

against accidental

into

theRFports.

for

energy in excess

from

much

RFisappliedtothe

warns

and

setting

RF

load.Acontinuous

a preset deviation limitisex-

RF

overload

modulation

does

antenna

port

with

A fused

the

high level

monitor

generate

a visual

warnoflow

for

particular

warning

metering

could

introduce

not

display

port

theRFStep

port,

of

warn-

bat-

and

ap-

100

dis-

for

to

3-2

FIGURE

A typical shows set frequency, frequency level.

MONITOR

--.-

Continuous

Modulation

DBM

dataisnot

AM

3-5.

Wave

INPUT

ERROR

CW

DISPLAY

display screen (figure 3-5)

monitored.

LEVEL

KHZ

•

-15

-60.5

-100

FIGURE

PCTAM

3-6.

o

AM

DISPLAY

error,

and

--)101.1000

RF

input

MHZ

---.- W

-41

+

+70.4

+100

15

"---/

A typical 3-6) shows set frequency,

modulation,

MONITORSSB

--.-

Amplitude

DBM

BFO

and

Modulation

RF

input

INPUT

ERROR

display

frequency

level.

LEVEL

KHZ

screen (figure

error,

percent

- -) 101.1000

MHZ

--.- W

+3.62

-15

°

FIGURE

A typical Single Side shows set frequency, error.

Modulation

GENSWP

419mV

FIGURE

A typical Sweep display screen (figure 3-9) shows set

frequency

not

monitored.

MHzor1-10

control

to fully

counterclockwise

and

MHz

the sweep

fully clockwise.

3-7. SSB DISPLAY

Band

display screen (figure 3-7)

RF

input

dataisnot

RF

LEVEL

3-8.

SWe

RF

output

In sweep

range.

function,

Use

width.

and

the

level,

and

monitored.

- -) 101.1000

DISPLAY

level.

Modulation

select either 0.01-1

the

Dispr/Sweep

The

minimum

maximum

BFO

+5.4

frequency

MHZ

DBM

position

AM

+

15

only

data

vernier

3.3 MODULATION SECTION

Figure 3-9 tors

The

with

frequency,

lating signal fixed 1

sizer, source ableatthe

• FIXED 1 KHz

A I

source TORTION Adjust position

•

CODE

The

multitone front

TION

is

PLlDPL

is is

Tone

shows

locatedinthe

modulation the

modulating

the

connectors,

front

panel

generator

signal

MODULATION

provides

internally

amplitude,orsideband

sums

the

inputsofthree

KHz

test

tone,

multimode

and

external

independently.

Mod

Out

inputs.

The

BNC

Adjust

modulating

connector.

TONE

KHz

test

tone

providesaconvenient

for

general troubleshooting,.

measurement,

the level with the 1

turns

off

the1KHz

and

KHz

tone.

distortion

Level

SYNTHESIZER

code

synthesizer generates either a single sequence,ora

panel

arrow

PLlDPL

Tone

A

Tone

Seq

Remote

and

CRT

keytoselect

Inv

B

DPL

sequenceinresponse

display

inputs.

oneofthe

Private Private Private

Line/Digital Line/Inverted

Line ToneAfrequency Tone

B frequency

Signaling Sequence Remote

Base

controls,

and

indica-

section.

the

RF

generator

connectedtoeither

function.

audio

the

The

sources:

code

level

modu-

Internal

synthe-

of

signal is avail-

modulation

SINAD

and

measurement.

control.

The

tone,

PressaMODULA-

six

modes:

Private

Digital

only

Control

Sequence.

each

DIS-

Off

a

to

Line

Cqde

S~'nlh

Use

the

keypadtoselect frequenciesinthe5Hzto1,000

Hz

range

for 20,000 crements). the

Hz

range

The

programmed

Cont-Continuous

PLorDPL

for

MODULA

tone

modes

the

other

nON

sequence:

position

andinthe5Hz

modes

(0.1

Hz

in-

toggle switch initiates

generates repetitive

to

cycles

Off

-

Position

Burst-Position

Table

3-1,

Tone

Seq

•

Tone

At"nlote

when.

Modulation/Function,

MODULATION

Code

Synth

Mode

Lvi

Eli!L1101

°PL/DPL

°Tone

Inv

A

terminates

generates

Available FM

Available

onlyinFM

Duplex

onlyinFM

Duplex

as AM,orSSB Generate

Mod

selected,

Monitor

position.

Out

in

positions.

modulation

a single

tone

tabulates

FUNCTION

Gen.

Modulalion

FUNCTION

Available

jack,

at

both

Generate

sequence.

what

works

Generate

jn

only

all times

or

FM,

in at

if

and

FIGURE

3-9. MODULATION SECTION

3-3

°Tone

B

SameasTone

A.

°Tone Seq

Available in FM, AM,

or

SSB FUNCTION only in Generate position.

°Tone Remote

Same as Tone A.

Note: All modulation sources are available at Mod Out

jack while in use as generator modulation. Code Synthe-

sizer Level control simultaneously sets both the

output

level and the modulation level.

the keypad to select any frequency

from10KHz to 1,000 MHz in

output

port

range at the antenna

port

provides sufficient amplitude to get through mis-

aligned tuners and receivers.Itis

of

the generator

100Hzincrements. The

and the transceiver

especially effective to

change a receiver's frequency. ----./

, RF

SU;'p

SECTION

RF'LP,,;,j

'-

Vanable

MODULA

•

EXTERNAL

TABLE

TION/FUNCTION

LEVEL

3-1.

AVAILABILITY

External Modulation Inputs from a microphone (Motorola RTM-4000B) plugged into the front panel and a signal applied to the Ext Mod In sum together to provide a single external modulating signal. The microphone input provides standard mobile radio preemphasis, clipping,

and

frequency roll-off. The microphone push-to talk switch switches the system from monitor to generate mode. Adjust the external input sensitivityorimpedance with the External Level control, for analyses with external instruments. The position turns

off

the composite external modulation

signal path.

• The Mod

Out

connector provides external access to the composite modulation signals. Output impedanceis600 ohms.

OISPLAV

_

C"n

MooMIr

.•

Modulnhon

e

Speci

A,ni1IVI.t~,

OuplC'k

Ceo

RF

Memory

• Stg"i1lmg

• F(eq Couniel

• OVM DIST

8 E

•

'"

•

..IWaltmtl'ler

IF

SCOUt'

Scope

Scq

AC

DC

1111

FIGURE

3.4

DlSPLA

To

select oneofthe twelve DISPLAY modes shown in figure 3-10, pressanarrow key located under the DISPLA

Y list to activate upordown movementofthe adjacent LED indicator.Ifa DISPLAY modeislocated at the toporbottomofthe list when a keyispressed, the

DISPLAY mode will wrap around. Confirm the selected configuration by the appropriate displayonthe CRT.

•

GENERATE/MONITOR

•

GENERATE

In

Generate FUNCTION the Analyzer generatesanRF signalata controllable testing. Many formsofinternal and external modulation can be simultaneously impressedonthe carrier frequencytogenerate composite signals for servicing. Use

3-10. DISPLAY MODES

Y SECTION

METERING

output

level useful for receiver

Off

3-4

Mo

•

Erl

\V~llmme'

•

RF

In the

FIGURE

LEVEL

RF

SECTIONofthe front panel (figure 3-11) a

3-11.

RF

SECTION

push-pull switch associated with the Variable level control selects either the antenna

portorthe transceiver port. The out-position (Pull) selects the antenna port. Control the RF

Level control and the attenuation with the14Step

attenuatorat10

output

over a16dB range with the Variable

dB per step. Use the attenuator to

tend the range to the maximum antenna input level

+10dBm. FUNCTION FM and CW

AM

RF

OUTPUT

•

RF

OUTPUT

Table 3-2 shows RF na

port.Atthe in-position (Push) transceiver port (RF

In/Out)

the

VOLTS RMS

0.1 uV to 1 V

0.1 uV to 0.4 V TABLE

3-2.

LEVEL AT ANTENNA

LEVEL

output

levelisattenuated by a nominal 30

levels available at the anten-

DBM

-127 to +

-127 to

PORT

dB below the levelatthe antenna port.

GENERATEFM

PL) 150.0

0.61 uV

12.4PCT

RF

LEVEL

DIST SINAD -18.1

- - ) 154.1250 DPL) ---

-111.4DBM

MHZ

-60

-4.74 DEV KHZ

-100 0

GENERATE

FIGURE

MODE

3-12.

METERING

DISPLAY

+4.75

+100

ex-

of

'-.....-/

13

+5

DB

0

,-----.

•

GENERATE

MODE

Figure 3-12 defines a generate mode metering display.

To

operate, place

tion. Press a

--PM for example. frequency. The luminate

and

FUNCTION

From

Gen/Mon

the

CRT

switch in Generate posi-

arrow key to select a signal,

the keypad, enter the desired

Mtr and FM LED's

displays GENERATE FM the carrier frequency. Use RF Scan control to tune up down. Adjust deviation using the 1 KHz Level control.

The CRT displays a complete summary parameters including carrier frequency, selected code, RF

level in volts and dBm (analog and digital), deviation or percent modulation. The displayisexplained here line-by-line.

of

il-

and

or

all

I) GENERATE FM

••) 154.1250

Line 1 displays the mode, function,

and

MHZ

current oper-

ating frequency.

2)

PL)

150.0

Line 2 displays thePLor

DPL)

DPL

code associated with the

•••

generate frequency. The system does not allow simul-

taneous code, the the programmed

DPL

PL

and DPL.Ifthe operator enters the

DPL

display changes to dashes.Ifhe enters

code, the

PL

display changes to dashes. The

PLorDPL

applies to the carrier auto-

PL

matically. Control its level with the Code Synthesizer Level knob. .

RF

output

LEVEL

-111.4 DBM

level in volts rms and in dBm.

4)

5) 0.61

Line 5 displays RF

uV

The voltage reading autoranges in three digits with the symbols uV for microvolts dBm reading appearsinfour digits with

and

MV

for millivolts. The

0.1

dB resolu-

tion.

-18.1 DB

o

9)

10)

8)

12.4

PCT

DIST/SINAD

-60

The distortionofan input signal applied to the multipurpose input jack displays in percent with 0.1 % resolution. SINAD displays in dB with 0.1 dB resolution. The bargraph responds linearly to the SINAD reading, originating at the left side at

-60

dB SINAD

and

exten-

ding to the right side for SINAD valuesto0 dB.

13)

12)

-4.74

14)

-100

Lines 12,

13,&14

DEV KHZ

o

display the leveloffrequency modu-

_

+4.74

+100

lation applied to the system RF output. Positive and negative readings autorange in 3 digits. The zerocentered bargraph extends to the right corresponding

to

the modulation level. The graph

responds in a modified logarithmic manner

and

leftofcenter

that

provides a smooth nonranging analog display with a full scale

of

± 100 KHz FM.

•

ANALOG

Figure

FIGURE

3-13

3-13.

RF

SYNTHESIZER

shows

RF

Scan control for Analog Syn-

SCAN

TUNING

CONTROL

(AST)

thesizer Tuning (AST). Manually scan through any frequency by

rotating

the

control

clockwise

counterclockwiseatthe rateof32 frequency steps per

revolution. The positionofthe display cursor in the frequency reading determines the sizeofthe step.Ifthe cursorisover the

100

Hz position, the step sizeis100 Hz.Ifthe cursorisover the 1 KHz position, the step size is

1 KHz. All seven possible cursor positions provide a scan range from 0.01 MHz to 999.9999 MHz. Use the RF Scan control to perform a linear sweep to scan the center frequency upordown. Switch to AMorFM Monitor FUNCTION to aid in positive identification and analysis demodulated

of

output

an

input signal. Listen to the

via the built-in audio amplifier and

speaker.

• RF SWEEP GENERATOR

Use the SWEEP FUNCTION modes to continuously sweep the RF generator and cavity response,

output,

and

to identify defective filter net-

display bandpass filter

works. In SWP FUNCTION, select sweep width in the

0.01-1 MHz

or

1-10

MHz range. The Dispr/Sweep vernier controls the sweep width within either range. Attach a demodulator probe (RTL-4075A) to the Vert!

Sinad/Dist general purpose input port and select Scope mode. The scope's horizontal sweep tracks the sweep the

output

frequency, thus allowing a frequency domain

analysisoffilters, RF front ends, and duplexers, etc.

•

MONITOR

The Analyzer monitors

MODE

RF

input energy from an antennaora transmitter to accurately determine the frequency, power level, and modulation characteristics. monitors signals from 0.01

MHz

to 999.9999 MHz with

a center frequency settable in 100Hzincrements.

CAUTION

or

of

It

15)

The w'ord

ANT

appears only when the antenna in-

put on the front panelisenabled.

3-5

Even when itisnot selected, the antenna to the transceiver

port

with a nominal 30 dB isolation.

portiscoupled

When using the transceiver

antenna

the

MONITORFM

from its

port.

INPUT

o

port

(RF

WATTS

In/Out)

--) 466.9750

disconnect

MHZ

2.05

125

A frequency

ates simultaneously with

SSB mode, the display shows either the

quency BFO.

Monitor

useofthe

rangeof± 3

12)

-4.72

13)

errororactual frequency displays oper-

FMorAMto80%.

or

the actual frequency

SSB

mode

receives SSB signals with

BFO.

Adjust

KHz

the

from the

DEV

KHZ

BFO

monitor

l--

of

the

frequency

center frequency.

For

the

error

fre-

MONITOR

t-!tt',

over

the

+4.75

_

-

J

0.50

+

+5.23

+ 100

15

-15

-5.13

-100

DEV

ALARM

ERROR

DEV

07.0

FIGURE

KHZ

o

KHZ

o

KHZ

3-14.

MONITOR MODE METERING DISPLAY

Figure 3-14 defines a

Set the toggle switch to

FM,

and

the

DISPLAYtoGen/Mon

1ine-by-line description

I)

MONITOR

On

line I the

operator t:nter a preset channel number, between01and CRT

displays the Memory table changes as required. quency, dashes replace the channel frequency changes as required.

4)

-62.4 DBM

Line 4 displays the

connector from

volts (use

switches to watts. The three-digit watts reading autoranges between 10, 100,

If

front panel settingsorinput conditionsdonot accurate determination dashes replace the reading.

9)

10)

11)

-IS

The

zero centered error. display, moves to the left negative positive logarithmic ing analog display row

BW

enables direct frequency

graph.

the

CRT

uses the keypad

attenuator).

The

graph originates

error, error.

manner

and±15

monitor

of

FM

displays

appropriate

and

the system

If

the

INPUT

input

-70

dBm to 3 dBm with indication in

ERROR

bargraph

andtothe righttoindicate increasing

The

graph

that

on

a full scale

KHz

readout

mode

metering display.

Monitor,

this display:

MONITOR

and

operator

LEVEL

signal levelatthe

Above 30 dBm, indication

of

•

o

provides a

in wide BW.Ifthe

the

FUNCTION

Mtr. Hereisa

•• ) 454.1252

FM.

the display cursor

frequency from the

operating

enters a new fre-

number

and

125

watts full scale.

dBm

or

volt readings,

KHZ

reflects the frequency at

the center

to

indicate increasing

responds in a modified

smooth

of±15

mode, the

MHz

When the

frequency

and

170.0 uV RF

-1.05

of

nonrang-

KHz in

operator

CRT

32, the

the

In/Out

allow

+

IS

the

nar-

omits

RF

to

3-6

14)

-100

The

display shows posItIve

levelofrecovered

The

reading in peak KHz autoranges full scale between

10

KHz

and

CRT

omits the

replaces the

INCREASE

The

warning will

at

the

antenna ceiver position. Use the level

A continuous audible deviation limit sor display. Use the keypad to enter code #78XYZ to program the deviation with #78000 to disable the alarm.

15) front panel the

dB position

•

SPECIAL

Use the special function modetoexpand the Analyzer's capability the keypad to enter control

and a specific any

and function screen under the words:

Use the keypadtoenter the two-digit special function

code selected from table 3-3. Entering the code's last

digit activates the selected function.

quired,

ditional data. mal screen either shortly after 10to15 for each code

port

and

remove the overload warning.

keys simultaneously to invoke the Special Function

100

Hz

ANT

displays only when the

RF

Step

FUNCTION

into

to customize for user preference without the use

CRT

time

and

SIMULTANEOUSLYDEPRESS

then release.

command

SPECIAL

more

secondsofno

FM

100 KHz. During overload conditions the

bargraph

normal

not

portorbelow

with the

attenuator

is

exceeded. Depress

alarm

resolution.

is

enabled.

attenuatorisat

and

the

areas

display.Toenable a special function,

during

CURSOR

The

display.

dashes

The

system revertstothe previous nor-

to

activate multiple special functions.

o

and

negative

in digital

modulation

INPUT

appear

RF

Step

alarm

Enter

ATTEN)

monitor

MODE

not

required for general use. Use

any

mode:

screen changestoshow a special

FUNCTION

appearonthe screen.

data

and

analog readouts.

and

a warning message

display:

ATTENUATION

for inputs below

-10

dBmatthe trans-

attenuator

to reduce the

sounds when a preset

both

from 0.1 KHz to

special function code

antenna

0 displays whenever

a setting

modeisin use.

information

KEYS

Two

dataisenteredorafter

entry. Repeat the sequence

other

into the system

BOTH

dashes

ENTRY.

If

more

+ 100

modulation

-40

in the 0

input

keypad cur-

99.9

inputonthe

than

KEYPAD

appearonthe

dataisre-

Enter

the.ad-

dBm

dB

signal

KHz

'---.-/

the 0

of

at

• SPECIAL FUNCTION CONTROL CODES

•

The

card

supplied with inside the codes. codes and

• A

master

to reverttothe

•

To

functions, simultaneously depress

sor to

standard

front-panel

Table

grouped

then

obtainaCRT

keys twice.

3-3 lists

accordingtothe first digitofthe

groupedbyfunction reset

code

default

The

operation

the

R-2001D

cover

show

the

special function

and

the

the special function

type.

a(zero) causes all function types

states listed in table 3-3.

display

screen will

of

all activated special

both

keypad cur-

automatically

after10to15seconds.

CODE MODE ACTIVATES

0

Master

10

Encode/

11

Encode/Decode

12

Encode/

13

Encode/Decode

Monitor

20

21

Monitor

22

Monitor

23

Monitor

24

Monitor

25

Monitor

26

Monitor Frequency

30

31

Frequency

32 Frequency

33XY

3300 Frequency

34XY

3400

Frequency

Reset Clears all special functions

Decode

(default Clears all

functions (default state) Baseband Decode

Encode

Clears all2Xmonitor special functions state)

Enables 300HzLPFL Enables3KHz

Enables 20 Enables 5HzHPFL Enables 300HzHPFL

Enables 3 Clears all frequency

special state)

Enables readout

Enables direct frequency

readout(lHz Enables scan lock from

XOO Enables full-band

scan Enables

XOO Enables

state)

IX

E/D

only Only

LPFL

KHz

HPFL

functions

direct frequency

(10

Hz

resolution)

MHztoYOO

lock

scan latch

MHztoYOO

full-band scan

latch

applique

control

return

special

(default

LPFL

3X

(default

MHz

from

MHz

code

CODE

.::.

77XY System

7700

78XYZ

7'i

78000 System

MODE ACTIVATES

40

DVM

state)

41

DVM DVM

42

43

DVM

44

DVM Modulation

50

Modulation

51

Modulation

52

Counter

60

Counter

61

62

Counter Counter

63

Counter

64 65

Counter

70 . System

71

System

72

System

73

74

System

50

79

System

Software

99

Control

Control Control

Control

Version

Enables Enables10V Enables Enables

Meter

Enables modulation (default state)

Meter

Enables10KHz

Meter

Enables Auto

(default state)

0.1

1Hzresolution 10Hzresolution 100Hzresolution 1

Sets (default state)

Sets the as the

Initiates a system self test Disables the

switching to if

O.l.W.

Mutes

Sets the last XY in

memory Resets

simplex (default state) Sets deviation

alarmtoXY.Z Disables

(default state) Resets nonvolatile

Shows P software

Enables DVM

counter

Hz

KHz

factory

the

input

automatic

ranging

1.0 V DVM range

100V 300V DVM automatic

100

resolution

current

power-on

signalisover

speaker

presets as duplex

from

duplex

audible

/Nofresident

version

TABLE 3-3. SPECIAL FUNCTION CONTROL CODES

(default~._

DVM

range

DVM

range

ranging

range

KHz

range

resolution

control

automatic monitor

state

during

RF

audible

KHz

alarm

memory

states

mode

GEN

to

tAo N,

c

1:1

-I

3-7

•

AUTO

Enable code

TUN"~

MODE

full-band scan lock with special function control

#3300 (table 3-3).

The

monitor

scans its specified

frequency range to automatically acquire and tune

strong

input

signal

within

fjve

seconds.

For

faster

quisition, use special function control code #33XY to limit the scan range to minimum quisition the transceiver port.

programmed

input

signal level for

is

-30

dBm at the

The

frequency display. Line 8 displays the actual input frequency in figure 3-10. When tuned, dashes replace the

ING

display

and

a dash in the cursor replaces the chan-

nel number. When the

100

MHz

increments.

automatic

antenna

word

SCANNING

± I KHz as shown in the example

frequency ac-

port

and

0 dBM

replaces the

SCANN-

input

signalisremoved, scanning

resumes.

SCAN

• Select this variationofthe

function control code #3400 latchanauto signal is acquired auto

LATCH

MODE

tune

frequency. In this mode, the

and

tune. However, the

auto

tune mode, using special

or

34XYtoprogram

tuned in the same

programmed

frequency display

manner

shows the word:

•

LATCHED

and

a dash under the cursor instead

of

the preset

number. The

second lineonthe metering display reads

PRESS0TO

•

If

the input signal is removed, the system remains programmed operator word display. Also, the

to

the last frequency tuned. When the

activates the 0 key, scanning resumes

SCANNING

The

CRT

replaces the word

preset

number0appears

omits the second lineonthe display as

RESCAN

LATCHEDonthe

under

and

the cursor.

scanning resumes.

The

scan latch

frequency

modeisuseful

of

trunked

radios.

for

locating the transmit

ac-

The

and

input

as for

the

•

VOLUME

The The

a

control

AND

Volume

SQUELCH

control

adjusts the speaker

CONTROLS

output

level.

Squelch control locatedtothe leftofthe Volume

(figure 3-15)iscontinuously variable

from

Off position (disabled squelch) to a maximum squelch lev( of

-25

dRm ±

Signal Level tion

(unsquelched).

at

indicates a closed position

10dBat

LED

illuminates, it indicatesanopen posi-

When

the

antenna

the

LEDisnot

(from

port.

illuminated, it

threshold to tight

When

the

squelch).

OFF-THE-AIR

• Use the Analyzer's

MONITOR

antenna

port

for off-the-air

monitoring. The Analyzer receiver's 1.5 uV sensitivity allows off-the-air monitoring error

and

deviationto1000

to

measure transmitter frequency

MHz.

Monitor

weak signals with the variable squelch. But for accurate measurement, set them higher to ensure

proper

signal-to-noise

ratio. More accurate measurements result from using a

The

higher signal level. enables frequent dation

early

parameter

and

reduce service costs. Set Wide

off-the-air

checkstospot

width for off-channel signal locationorwide

Set Narrow bandwidth for

maximum

monitor

system degra-

sensitivity

function

band-

band

FM.

and

selectivity.

SIGNAL

• Place the

STRENGTH

FUNCTION

METER

switch in

Monitor

mode.

The frequency selective signal strength indicator, operates simultaneously with

input

full

frequency rangeofthe imum 30 KHz bandwidth quency.

At

the

dicator operates for

dBm with the Step non-zero

attenuate

amountofthe

by inserting loss, using the

other

antenna

input

attenuator

both

attenuation.

monitor

functions over the

monitor.Ituses a max-

around

the

monitor

port,

the signal strength in-

levels from

-99.9

center fre

dBmto-30

in the 0 dB position.

limits

are

increased by the

Measure higher level signals

rotary

attenuator.

For

The

a

displayed measurement compensates for the attenuation.

3.6

MONITOR

FIGURE

SECTION

SquelCh

0"

....

Image

Opht

HI9h~.

LOIN

w

Delima

OuI

3-15.

MONITOR

~19l

...

,

•

Wide

N;wow

Volume

'PM"

OW

BFO

SECTION

3-8

FM

DEMODULATION

• The

monitor in the wide band

demodulates

band

position

FMto75

and

to 5 KHz in the

position. Selectable highpass

KHz

peak deviation

and

lowpass filter

narrow

sections determine the monitor's frequency response with characteristics as shown in table 3-4. Select

width via BW switchorspecial function control.

wide

band

KHz

lowpass filters.

the 5

Hz

position enables the 5

The

narrow

highpass

and3KHz

Hz

high pass

band

position enables

lowpass filters. Special Function overrides the BW switch to enable selection any combinationofhigh

and

low pass filtering as de-

fined in table 3-3.

band-

and

The

20

of

•

AUDIO

Table

Highpass:

Lowpass:

Filter

Character-

istic

FILTERS

3-4 lists

audio

Filter

Mode (Not More

Than

Hz

5

300

Hz

3

KHz

20

KHz

3

KHz

300

Hz

filter characteristics.

Frequency

0.5

5

Hz

20

KHz

dB)

Frequency

(Not

Than3dB)

300

3

300

More

Hz

KHz

Hz

Frequency

(At Least

dB)

20

170

Hz

1.7

KHz

40

KHz

5.4

KHz

540

Hz

•

MODULATION

In the frequency

3-16), view the

in generate

mode.

modeorthe demodulated

Analyze waveforms deviation graphically. Use the select wideornarrow adjust

frequency peak deviation. In fromato

20 KHz.

calibrated for

MODULATION

composite

bandwidth.

modulation

the

narrow

The

display's vertical deflection is

FM,

generate

modulation

on

MONITOR

level

position,

and three ranges with 0.25 KHz, 2.5 KHz, graticule division. Use the tion

controls

level, vertical

the Vert

modulating MODULATION this

manual.

shown in figure 3-41toselect deviation

and

horizontal.

control

signal is generated internally by the

SECTION.

OSCILLOSCOPE

to

the

Refertoparagraph

To

proper

DISPLAY

audio

(figure

waveform

audioinmonitor

the scopetomeasure

BW switch

to

In the wide position,

from

a to 75

adjust

monitor

and25KHz

KHz

the range

modes, in

per

modula-

set the range,

KHz/Div.

adjust

The

3.3 in

TABLE

•

AM

The level. cept

3-4.

AUDIO

DEMODULATION

monitor

The

that

demodulates

frequency response is the

the

lowest allowable highpass filter

300Hz.

•

SINGLE

The the as for

•

AUDIO

A speaker mode The audio

SIDEBAND

monitor

sideband

has a mode.

FM.

MONITOR

monitors

and

the

modulating

speaker drive signalisalso appliedtothe receive

pinofthe special function maintaining the headset trol.

The

audio

signal frequency response ranges 300Hzto20KHz 3

KHz

in the

narrow

FIGURE

3-16.

FILTER

CHARACTERISTICS

AMtoa

100070

same

as for

modulation

FM

ex-

cutoff

DEMODULATION

minimum

The

the

microphone/headset

dynamic

range

of

frequency responseisthe

recovered signal in

the

signal in the generate

connector.

30

dB in

same

monitor

mode.

Use

controltodisable the speaker while

audio

signal with volume con-

from

in the wide

band

and

from 300Hzto

band.

MODULATION

DISPLAY

CENTERFREQ

is

dB

FIGURE

•

SPECTRUM

The

Spectrum Analyzer display, figure 3-17, shows

3-17.

ANALYZER

SPECTRUM

center frequency, channel

quency. Use from01to32or the

Spectrum andIFsignals, measure spurious response The

CRT

RF

Memory

the

keypadtoenter

enter a center frequency directly. Use

Analyzertoidentify interference, trace

transmitter

and

receiver local oscillator

displays

table

the

appropriate

and

changes the system

07) 156.2800

ANALYZER

number,

the

frequency

MHz

KHz

DISPLAY

and

operating

channel

number,

harmonics, check

radiation.

from

operating

fre-

RF

the

fre-

quency as required. Entering a new frequency changes

the channel operating windowofthe transceiver MHz served window for

the

Dispr/Sweep Analyzer has a dynamic rangeofat Step tenuator, maximum tenuator,

dB readingonthe

-95

dBmatthe

transceiver

numbertoa dash

frequency as required.

RF

spectrumateither

port

in a range selected

programmable

the

and

attenuator

in the 0 dB position.

the usable range

allowable

add

10 dB

input

per

scope.

antenna

port.

in 100

Hz

Analyzer

RF

Scan controls.

can

levels.

step

attenuationtothe actual

The

usable sensitivityisat

port

and

changes the system

The

CRT

displays a

the

antenna

from1MHzto1,000

increments.

can

be controlled with

The

Spectrum

least75dB with the

With

be

extendedupto

When

and

using the at-

-65

dBm

or

ob-

the at-

the

least

at

the

3-9

Antenna

CAUTION

10.0'

L:.

l.rUI

'0

DUPLEX GEN

On

011

Oulput

CAUTION

80.01

"PUT

'OWl'

FIGURE

DPLX

-2.06

-100

3-18.

Monitor

Offset

Generate PL)

- - -

DUPLEX

DEV

GENERATOR

06)

029.7750

074.7750

DPL)

GEN

KHz

o

ANT

FIGURE 3-19.· DUPLEX GENERATOR

SECTION

+45.00

137

ATTEN)

DISPLAY

MHz

+2.06

+ 100

also changestomaintain whenever a new grammable

+ / - the

The

monitor

MONITOR

monitor

duplex

offset

frequency.

Image/Duplex positiveornegative signalofthe offset. As changes, the generate frequency changestoreflect new offseLOnlineI,enter a frequency from the GEN switch

mode,

controls

the

Image/Duplex

the

duplex frequency

(High)orbelow (Low) the receive

cy. In

monitor

mode, the local oscillator injection grammed

terference.

monitor

Enter

frequency

either the duplex generate frequency. PL

location, the entryismade changes

toadash. FUNCTION mines the

analysis. recovered

It

from

negative readings

from

0

scale modulation analog

displayona full scaleof20

DPL

into the

Line I I indicates the

switch.

sourceofmodulation

is

either appliedtothe duplex

the

monitor

autorange

10KHzto100 KHz.

levels

and

the

displayed offset value

frequencyisentered.

equals the generate frequency

RF

memory

switch

the channel

controls

numbertoselect

table. In

two-position toggle

output

programmed

this switch selects

the

frequency

aboveorbelow the

to

remove image in-

PL

or

DPL

codeofthe

If

an

entryismade

display changestoa

DPL

location,

dash.Ifan

the

PL

positionofthe

GenerateorMonitor

mode

available for system

generator

receiver. Both positive

in

three

digits with full

The

bargraph

provides a

smooth

KHz

nonranging

FM.

The

pro-

th

the

offset

the

DUPLEX

for

above

frequen-

of

pro-

into

the

display

deter-

or

and

represents

•

DUPLEX

The quency

GENERATOR

Analyzer providesanRF

from

the

Monitor

output

center frequency hances capability to service duplex such

as repeaters, medical telemetry portables. put

becomes the

or

transceiver

antenna Figure 3-18 shows On/Off

toggle switch,

located in the lower

The

duplex quency MHz

range

to±10

generator

MHz

the single fixed

generator

has full capability, including voice and

subaudible

RF

coming

a

separate

off

-35

Figure 3-19 shows erate) display, channel quency. the The the channel generate shows the exceeds ± 45 quency

before

number quency

Enter

appropriate

system

operating number

frequencyofthat

corresponding

MHz

changestoreflect the

channel selection.

changestoa

changes as

car

telephones,

The

generate

port

the

becomes the

DUPLEX

Antenna

left-hand

operates

and

provides frequency offsets from 0

programmable

offset

internal

of±45

and

simultaneous

tones.

This

modulation

the

DUPLEX

dBm

the

(4 mV)RF

DUPLEX

GEN

number,

the

channel

frequency

number.

from

frequency changes as required.

defines a

duplex

pair

calculated offset.Ifthe

or

0 ±10MHz,

For

dash

and

required.

thatisoffset

DUPLEX

for

this

radio

and

mode

monitor

in fre-

and

enequipment emergency GEN

Out-

while the

port.

GENERATOR

and

Output

cornerofthe

over the full

in 5

MHz.

external

connectors,

front

monitor

KHz

The

FM

modulation

steps

duplex

panel.

fre-

and

with audible

appearsonthe

Output

port

which

output.

(Monitor,

and

theRFMemory

Offset,

system

The

CRT

frequency

monitor

displays

pair,

Gen-

fre-

table.

the

displaysonline 5. Line 3

offset

the

generate fre-

offset

that

was displayed

a new entry, the channel

the

system

The

operating

fre-

generate frequency

-

-)

RF

MEMORY

PL)

- - -

267.5673 DPL)

PAGE

RF(MHz)

09) 150.5200

11)

12)

13)

14)

•

RF

is

MEMORY

An

internal grammable or

DPL

823.7320

154.0000

164.0000

145.0000

164.5500

174.5500

FIGURE

codes. Use

TX TX TX TX

3-20. RF MEMORY

nonvolatile

RF

frequencies

memory

the enteror,change a frequency in the quency programmed,

If

set quency. Figure 3-20 shows a typical page. When to all

remains in

the

operating

The

the

reflect

numeric

the

memory

frequency

display allows

page

numberischanged,

the

information

values, except

table

a totalof32 entries..Preset or

duplex. Select 0to16

function

control

duplex channels

code 77XY (table 3-3). Duplex

PL

(Hz)

-'-

063.0

075.0

003.2

DISPLAY

stores

and

their

corresponding

keypad

and

display

memory

until itischanged.

provides

and

code

one

for

RF

page

numbers

the display changes storedonthe preset

channel

channels

are

and

button

the preset freMemory

from1to

new page.

numbers,upto

either

through

MHz

132

SEL) 2

DPL

131

226

displays

pro-

PL

cursor

table. A fre-

Once

recall

table

Enter

simplex

special

chan-

"----./

to

4.

3-10

nels display a pair

of

frequencies for each channel

number, one for generate and one for monitor. Identify

or

generate

monitor frequencies by the letters RX

TX. The system changes automatically from transmit to

receive frequencies with the Generate/Monitor switch or

the MIC push-to-talk switch. Each simplex channel

and

each generate frequencyofa duplex channel has

either a

code. When

DPL

PLorDPL

a preset

code

is

generator.

• ENTRY WITH MEMORY TABLE

To

enter a frequencyorcode into the memory table,

proceed as follows:

1.

Select RF Memory DISPLAY position.

2. Use the keypad cursor keys to select the line and lo-

cation to be changed.

3. Use the keypad numeric keys to enter the new fre-

quency,

4. Make other changes or corrections for each line

PL,orDPL

the memory table.

5.

Turn

the

POWER

Turn

onds. to verify

• ENTRY WITHOUT MEMORY TABLE

To

enter a frequencyorcode without using the memory

the switch

that

all informationiscorrect.

table, proceed as follows:

1.

Select

Gen/Mon/Mtr

2. Use the keypad cursor keys to locate the cursor over the first digit in the frequency.

3. Use the numeric keys to enter a new frequency. The new frequency displays automatically when the power turned on.

4.Ifa frequencyisselected from the memory table, after a new frequency was entered directly, the frequency

from the memory table takes precedence and it will

appear when the Analyzer

5.

To

changeoradd mode, use the same procedure but move the cursor to the second line.

• PRESET TURN-ON

The Analyzer's normal internal configuration turns-on

Gen/Mon

at

Mtr, FM, and system to turn-on follows:

1.

Pressanarrow key to select the desired DISPLAY.

an

2. Press

3. Press a

arrow key to select the desired

MODULATION

Code Synthesizer Mode.

4. Simultaneously depress both keypad cursor keys to obtain the special function display. Enter code number

code. A dash replaces an unused is

selected, the appropriate

also programmed into the signaling

code.

switch to Standby for five sec-

On

and check the memory table

DISPLAY position.

is

turned

PLorDPL

PLiDPL.

at

any other configuration, proceed

off

and one again.

codes in the generate

To

program the

FUNCTION.

key to select the desired

PL

or

of

as

71

to enter the new configuration into the nonvolatile

memory.

5.

Turn

the

POWER

switch

off

and then on again.

Check the display's accuracy.

6.

To

restore the system to normal turn-on configura-

tion, follow steps

• SIGNALING SEQUENCE

1 through 4 above.

The complete signaling simulator in the system includes

both encode and decode tone sequence synthesizer capability for the following

Fixed

1 KHz tone

MODULATION

modes:

Single tone variable

Private Line (PL)

or

Tone A

Tone B

Digital Private Line (DPL) sub-audible squelch

Two-tone sequential paging

5/6

tone paging

V signaling

Select General sequential, ten-tone Mobile telephone signaling

(lMTS) improved mobile telephone system (MTS) mobile telephone system

2805

Hz

Tone Remote, base station

SIGNALING SEQUENCE

ENTER0FOR

1)

A/B

ENCODE

2)

5/6

TN

ENCODE/DECODE

3)

SELECTVENCODE/DECODE

4)

PL

DECODE

5)

DPL

DECODE

6)

GENERAL

7)

MOBILE

SEQ

TELEPHONE

MENU

ENCODE/DECODE

MODE

SEL) 0

is

MON/GEN

SIGNALING SEQUENCE MENU DISPLAY

• SIGNALING SEQUENCE MENU

Figure

3-21 page 0 showing the set one for each family

quences. During the menu display no sequence

SW

FOR

DECODE/ENCODE

FIGURE

3-2l.

defines the Signaling Sequence menu for

of

seven sub-displaysorpages,

of

encode and decode tone

se-

output

is

possible. To select a page, place the cursor over 0online

I and enter a number from I to 7. The system generates

the selected family's sequence. .

NOTE:

The sensitivityofthe decode circuits is controlled by the OSCILLOSCOPE results, set the control for a 90% tion in the oscilloscope mode. NO

INPUT

SIGNAL indicationonthe screen; too high

causes wandering

Vert switch and vernier.

of

full-screen deflec-

Too

little signal causes a

or

erroneous readings.

For

best

3-11

•

DECODE

MODE

SCREENS

All decode screens have a "start" decode select. This will

start the specified decode and put the software into a

tight loop. This assures the best accuracy possible, but todoso, the analyzer ignores all switch selections and key

entries except to gotothe "menu"orto "end" the

decode loop. During the decode loop, a

message

"0"

a "1" entry starts a decodeorwill ess, and a "2"

appears

near

the

entry on the 2nd line

will

end the decode.

topofthe

will

screen.

return the screen to menu,

reset a decodeinproc-

"DECODE"

In

general,

PL

CODE

XZ WZ XA

a

WA

XB

FREQ.HZ

67.0

69.3 4A

71.9

74.4

77.0

CODE

4Z

4B 5Z

5A

FREQ.HZ

136.5

141.3

146.2

151.4

156.7

'----

PL

DECODE

SIGNALING

0)

MENU I) START

SEQUENCE

MODE SEL) 4

2)

END

FREQ: 076.3

CODE: -

FIGURE

•

PL

3-22.

DECODE

PRIVATE

LINE

DECODE

DISPLAY

Select Signaling Sequence DISPLAY. Monitor FUNCTION,

and

PL

Mode. Use special function control to select the signal source for the decoder. The decoder accepts signal inputs from either the internal monitor demodulator

Analyzer decodes tone sequence,

outputorfrom the Ext Mod In port. The

PL

and

DPL

signals,

to determine the generating code. Figure 3-22 shows a

page 4 displayofa decoded

PL

frequency and code. Frequencies readout to a maximum 300Hzwith resolution. The codeofthe nearest valid frequency will be displayed. Dashes displayifthe frequency exceeds the limit. Table

3-5

lists all validPLcodes and their fre-

quencies.

0.1

Hz

WB

79.7

YZ 82.5

YA

YB ZZ

85.4

88.5

91.5 ZA 94.8 ZB

lZ 1A IB

2Z

2A

2B 3Z

97.4

100.0

103.5 M2

107.2

110.9 M4

114.8

118.8

123.0

5B 6Z

6A

6B

7Z 7A M1

82

M3

9Z M5 M6

162.2

167.9

173.8

179.9

186.2

192.8

203.5

206.5

210.7

218.1

225.7

229.1

233.6

241.8

'---

3-12

3A

3B

TABLE

127.3

131.8 3-5. VALID

M7

PL

250.3

CODES

'--....---'

023071

025 026

031 032 043

134223306411

072

143

073

152

074

155

114 156

115 162

226 243

244 245 251

311

412

315

413

331

423 532 662

343

431

346

432

503631

506

516 654 754

546 664

565 047116165261351445606712 051

125

172

263

364 464 612

054

131

174

265

365

465

624

065

132

205

271

371

466

627

DPL

•

DPL

Figure page5.If

TABLE

SIGNALING SEQUENCE

0)

MENU

DECODE

FIGURE

DECODE

3-23

3-6. VALID

DPL

CODES

MODE

1)

- NO 3-23.

DPL

INPUT

CODE:

DPL

START

321

SIGNAL -

DECODE

2)

DISPLAY

shows a displayofa detected valid code on

the system detectsaninvalid code, dashes replace the code number. Table 3-6 lists the valid codes.

632 743

703

723

731

732

SEL) 5

END

734

DPL

•

AlB

ENCODE

Figure 3-24 shows a display for page Iofthe menu. select sequence input, enter a number from I to 4. Enter Tone A and Tone B frequencies. Each frequency has a maximum valueof20,000 Hz with a resolutionof0.1 Hz. The system responds to changes in the tone frequency to allow the next complete signaling sequence to be executed with the new tone frequency. The majority

of

two-tone pagers use the first two fixed sequences

listed in the tone sequence table. The operator cannot

change the first two sequences but he can change the last

two. Each delay entry has a maximum value seconds. The system responds to new entries during an active sequence to allow the next complete signaling se-

quence to be executed with the new timing mformation. For

triggered sweep on the oscilloscope program the scope trigger delay to a maximum 10 seconds (0.001 second resolution).Iftime entered exceeds Tone Sequence time, the oscilloscope

will

not trigger. Enter

000.0 to disable trigger delay.

•

TWO-TONE

SEQUENTIAL

PAGING

Program a two-tone pager access sequence with Tone A

and Tone B frequencies, tone durations, and time between tones as defined in figure 3-24. Select Tone Sequence mode for the code synthesizer,

AlB

sequence the Signaling Sequence DISPLAY, and Generate FUNCTION. The timing format for this mode consists of

Tone A for the programmed time, followed by the

programmed delay, followed, by Tone B for the programmed time, followed by the second programmed delay. This sequence will repeat in continuous position but

generate only a single sequenceinburst position.

SIGNALING SEQUENCE

ENTER 0

5/6

TONE

1)

5-TONE SEQ

ENCODE

FOR

MODE

MENU

2)

SEL) 2

SEQ SEL) 2

6-TONE SEQ

of

To

10

all

SIGNALING SEQUENCE MODE SEL) 1

AlB

ENCODE

A) 01200.0

A

1)

0040

2)

1.00

3)

0.10

4)

0.20

FIGURE

ENTER0FOR

Hz

DLY

0.00

0.10

0.20

SCOPE

3-24.

TRIG DLY)0.000 SEC

TWO

0.20

B

0.20

3.00

0.10

TONE

MENU

(AlB)

DISPLAY

SEQ SEL) 1

B) 00300.0

DLY

1.00

1.30

0.10

0.20

ENCODE

Hz

(SEC)

TONE

TN&VCE

3-13

CAP

CODE) 2-13340X

SCOPE

5/6

•

5/6

TONE

ENCODE

FIGURE

TONE

TRIGDLY)

3-25.

ENCODE

0.000 SEC

DISPLAY

Figure 3-25 shows an encode display for page 2ofthe

menu. Select either 5-toneor6-tone paging. Table

lists the cap code digits and their frequencies. Enter the cap code digit for the desired

output

sequence. The code has a preamble tone number followed by a 5-digit sequence number. An X automatically appears at the end of

the cap code. The system responds to changes in the cap code to allow the next complete signaling sequence to

be executed with the new code information. The sixth

or

X tone may not be transmitted by selecting the 5-tone sequence.Ifthe toneisnot transmitted, a delay equal to the normal tone X timeisinserted. With the MODULATION switch in continuous position, the of

the preamble tone followed by a continuous cycling 5

or

6 tone sequence. Cycling terminates only when the

switchismoved to the

off

position

output

or

the mode

consists

3-7

is

changed. Burst position generates a single cycle pream-

ble tone followed by the 5

which the

DIGIT

output

terminates.

FREQUENCY

HZ

0 600 6

741 2 882 3

4 1164 R

5

SIGNALING

0)

MENU

5/6

TONE

1023

1305

TABLE

DECODE

3-7.

SEQUENCE

1)

START

or

6 tone sequence after

DIGIT

FREQUENCY

7 8 9

X 2010

CAP

CODES

MODE

1446 1587 1728 1869

SEL) 2

2)

END

HZ

459

CODE: 2 - 4 5 3 1 1 X FREQ: 0082 Hz

1164

1305

1023

0741

1446

0429

SIGNALING

SELECTVENCODE

1)

ZVEI

3) CCIR (70MS)

5)

EEA

SEQUENCE

ENTER0FOR

2)

4) CCIR

MODE

MENU

SEQ SEL) 1

MODIFIED

(lOOMS)

SEL) 3

ZVEI

ACCESS CODE) 12345

SCOPE

FIGURE

SELECTVENCODE

•

TRIGDLY)

3-27.

SELECTVENCODE

0.000 SEC

DISPLAY

Figure 3-27 shows an encode display on page 3. Select one

of

the five sequences to display the five-digit access

V.

code for Select of

a new access code to execute the next complete sequence. Table 3-8 lists tone frequencies tion in milliseconds for each digit A sequence consists

The processor responds to the entry

and

time dura-

of

the five sequences.

of

a single seriesoffive tones in re-

sponse to the five-digit access code. Each tone lasts for

or

the specified duration. Select single

or

using the burst

TONE

ZVEI/B.O.S. MOD. ZVEI CCIR

NUMBER HZ

continuous switch position.

HZ

repetitive cycles,

EEA

HZ

CCiR

'--../

HZ

TIME: SEC .035 .035

•

5/6

FIGURE

TONE

3-26.

DECODE

.035 .035

- NO

INPUT

5/6

TONE

.035 .035

SIGNAL -

DECODE

.035

DISPLAY

Figure 3-26 shows the decode display on page 2.Ifthe

is

reset decode information decoder sequence resumes.

: detects the presence

pears at the end mains blank.

activated by entering a "1" for "START", all

is

replaced by dashes and the

If

the decode sequence

of

the sixth or X tone, the X ap-

of

the code. Otherwise,

If

the sequence detects an invalid fre-

that

space re-

quency, a dash replaces that digit. The display shows the

of

detected frequency for each digit

the cap code.

format staggers a line with the appropriate frequency

directly below the code digit. Frequencies readout to a

of

maximum value

10,000 Hz with I

the decode sequence cannot detect

Hz

resolution.

an

input signal, a

warning message displays. The display retains the last

of

decoded sequence information, regardless put

condition, until the

or

decode

changes the display.

operator

initiates another

signal in-

The

If

1060

2

4 1400 1270

6

9

o

R*

TONE

LENGTH

illS

1160

1270

1530

1670

1830

2000

2200

2400

2600

70

970

1060

1160

1400

1530

1670

1830

2000

2200

2400

70

1124

1197

1275

1358

1446

1540

1640

1747

1860

1981

2110

100

1124

1197

1275

1358 1358

1446

1540

1640

J747

1860

1981

2110

40

1124

1197

1275

1446

1540

1640

1747

1860

1981

2110

'----

....

70

3-14

*Risthe repeat tone whichisinserted wherever there

a repeatofthe same tone in adjacent time slots

(Example: Encode 13334 as 13R34).

TABLE 3-8.

SELECT

V SEQUENCE

SPECIFICATION

is

'-----'

SIGNALING

0)

MENU

SELECTVDECODE

1)

ZVEI

3)

CCIR

(70MS)

5)

EEA

CODE:

FREQ:

HZ

TIME:

SEC

1080

.070

SEQUENCE

1)

START

2)

4)

2

1160

.070

2600

.070

MODE

MODIFIED CCIR

SEL)

2)

SEQ

(lOOMS)

2 5 3

1530

.070

FIGURE 3-28. SELECT V DECODE DISPLAY

• SELECT V DECODE

Figure 3-28 of

the

for

Select V.Ifan

the

sequence, a shows maximum

shows

present,

resolution.

GENERAL

FREQ

I)

10531.0 0030 2) 02000.0

3) 03561.0

5) 11532.0

7) 00000.0

9)

00000.0 0000

showsadecode

five sequencestodisplay

invalid

dash

decoded

the

SIGNALING

HZ

tone

frequencies for each

10,000Hzwith 1Hzresolution.

time

duration

to

a 1 second

ENTER0FOR

SEQ

ENCODE

TIME MSEC

0030 0030 0000

SCOPE

TRIGDLY)

displayonpage

frequency

replaces

that

the

maximum

SEQUENCE

4)

6) 08471.0

8) 00000.0

to)

3. Select

the

decoded

is detected within

that

digit.

The

code

The

tone

for each digit was

with I millisecond

MODE

MENU

FREQ

HZ

01876.0 0030

00000.0

0.000

SEL) 6

SEC

FIGURE 3-29. GENERAL ENCODE DISPLAY

3

END

SEL)

ZVEI

1270

.070

access

display

digit, to a

display

TIME

MSEC

0030

0030 0000 0000

I

one

code

• GENERAL ENCODE

Figure

grammable

code

GENERAL

3-29

shows

the

general

oneofthe ten

Select

tone

time

duration

synthesizer keytoselect

Place

the

MODULATION

ous

positiontoinitiate

tone

frequencies willbegeneratedinsequence for its

duration

before

SIGNALING

0)

MENU

FREQ

HZ

1)----

SEQ

possible sequences.

frequency

from

0 to 10,000 milliseconds.

the

generator

SEQUENCE

DECODE

TIME

MSEC

3) - - - -

5) - - - -

7) - - - -

9) - - - -

-

NO

INPUT

encode

from0to

switchinburstorcontinu-

the

sequence.

proceedstothe

I)

START

displayonpage

20,000Hzand

Tone

MODE

FREQ

HZ

2) - - - -

Enter

Sequence

Eachofthe

SEL)

2)

4) - - - -

6) - - - -

8) - - - -

to)

- - - -

SIGNAL

-

FIGURE 3-30. GENERAL DECODE DISPLAY

• GENERAL DECODE

Figure quence durations is

resolution). duration curred ing valueof9999 milliseconds(Ims resolution).

• MOBILE

The base sequences. It generates sequence, verifies codes bers. radio initiate a new sequence,

3-30

shows

a display

decode

displayeduptoamaximum

between

tone

are

No

in the

burst.

table

derived

display

TIME

the

preceding

Timeisdisplayed

TELEPHONE

Analyzer

and An

failure.Toreset

simulates

displays error

mobile

tone

message

for

on

page

from

the

in a

field indicates

SIGNALING

basetomobile

radiotelephone

frequencies

during

the

mobile

press"I"for

the

general

6. Frequencies input

signal.

valueof9999Hz(I

FREQ

tone

the

field with a time

thataspace

burst

and

uptoa

and

appropriate

response, de-

and

telephone

a sequence indicates

telephone

"START"

the

Press

Mode.

next tone.

6

END

TIME

MSEC

ten-tone

and

Frequency

the

follow-

maximum

mobile

signaling

decoder

again.

6.

pro-

the

a

ten-

se-

time

Hz

oc-

to

num-

and

3-15

SIGNALING SEQUENCE

0)

MENU

MOBILE

1)

MOBILE

TONE1)2000

TEL

IMTS 2) MTS

ORIG

Hz

1)

START

3)

2805

MODE

TEST SEQ SEL) 1

TONE2)1800

SEL) 7

2)

END

SEQ SEL)1

2)

BASE ORIG

Hz

ERROR

06 Illegal tone transition (M.O.). Mobile ID

or

phone number sequence is incorrect. For example, guard tone space, guard tone,orconnect tone-space-connect tone would generateanerror.

TABLE 3-9. IMTS

MESSAGE

ERROR

MESSACES

'-----'

MOBILE ID

DIALED NO GUARD FREQ CONN FREQ

DISC

FREQ

FIGURE

IMTS MOBILE

• IMTS MOBILE ORIGINATED Figure

three phone systems, by Sequence Select and either mobile Here the display shows a test sequence menu for IMTS with the information decoded from the mobile radio for a mobile originated sequence. The mobile ID and dialed number vary up to a maximum numberofseven and ten digits, respectively. The maximum decoded frequency 10,000 Hz with 1 Hz resolution. under DISC FREQ (refer to the tone sequence diagrams in your IMTS Manual).

3-31

shows a page 7 display. Select oneofthe

or

base originated, by Test Sequence Select.

B.a.

means base originated;

M.a.

01

Incorrect IMTS tone. M.O. tone was not oneofthe three possible receive tones:

This error can happen only after the guard tone has been received.

- - - - Hz

- - - -

Hz

- - - -

Hz

3-31.

ORIGINATED

MESSAGEERROR

means mobile originated.

Connect Guard Disconnect.

DISPLAY

Error

messages display

SIGNALING SEQUENCE MODE SEL) 7

0)

MENU

MOBILE

TEL

1)

IMTS 2) MTS

IMTS

1)

MOBILE ORIG

MOBILE ID GUARD CONN FREQ

DISC FREQ

is

• IMTS BASE

IMTS BASE

Figure 3-32 shows a page 7 display allowing the operator to enter a 1 to 7 digit ID for the mobile being tested. Enter a number in the most significant location. Dashes replace the desired numberofdigits. Enter the desired

numberofdigits. The other digit locations remain as dashes. The processor responds to changesinthe telephone number to allow the next complete dialing sequence to be executed with the new number. The display shows decoded signaling tone frequencies for an IMTS base originated sequence, with 10,000Hzmaximum frequency and 1 Hz resolution. the line above SCOPE. The Analyzer encodes and decodes the information defined by figures

FREQ

SCOPE

ORIGINATED

1)

START

3)

2805

7635412

- - - - Hz

TRIGDLY)

FIGURE

ORIGINATED

3-32.

Error

2)

END

SEQ SEL) 1

TEST SEQ SEL) 2

2)

BASE

aRIa

0.000 SEC

DISPLAY

messages display

3-31

and 3-32.

on

02

03

04

05

Too

many digits decoded (IMTS - M.O.). The mobile IDorphone number had too many pulses (more than ten).

Time-out error (IMTS - M.O.orB.O.). Tone

lasted longer than spec, in specified

state.

Improper sequence (M.O.). Sent mobile

ID before seize tone. No guard tone

spond to seize tone.

(B.a.).

Mobile doesn't re-

SIGNALING SEQUENCE

MOBILE

TEL

1)

IMTS

MTS

TONE1)2000 Hz

FIGURE 3-33. MTS MOBILE

• MTS MOBILE Figure 3-33 shows a page 7 displayoftone 1 & tone 2

frequencies used in generating mobile telephone MTS

3-16

2)

SCOPE

ENTER BURST

MTS

MOBILEID7635412

TELEPHONE

°FOR MENU

TO

START

3)

2805

TRIG

DLY) 0.000 SEC

TELEPHONE

MODE

TONE2)1800

SEL) 7

SEQ SEL) 2

DISPLAY

Hz

'-----"

and

2805 sequences.

imum

10,000

responds to changes in tone frequencies to allow the next completesequence

frequencies.

quence select

SIGNALING

MOBILE

TEL

I)

IMTS 2) MTS

2805

TONE

I) 0000

MOBILE

FIGURE

3-34. 2805 BASE

• 2805 BASE Figure 3-34 shows a page 7 display for the mobile tele-

phone

2805 sequence, base originated. Figure 3-34 defines the encode 2805 sequence requires no test sequence select no mobile

•

TONE

,-.., Select

SEQUENCE

Tone code synthesizer. in

monitor

encodeordecode in either generateormonitor

tion.

The signaling systems. and

time interval.

TONE

•

REMOTE

The

System can be usedtosimulate a trol console, circuitry in remote base station. These useful are

availableatthe

so

that

they can be coupled

other

place they

by selecting

TION

sectionofthe

propriate

ming

ToneAand paging sequence. Typical A) is 2175 Select

ToneBfrom

Remote Instruction

Enter

frequencies

Hz

with 1Hzresolutions.

up The

to be executed with the new tone

The

MTS sequence requires no test se-

and

hasnomobiletobase system.

SEQUENCE

ENTER0FOR

BURST

TO

MENU

START

MODE

SEL)7

SEQ

3)

2805

Hz

TONE

2) 2805

ID

ORIGINATED

to

base system.

Sequence

Encode

information

Mode

for 2805 sequences.

(memory display) for the

in generate function, decode

function,oruse special function

tone

memory

table displays details for all

Program

frequency, time

(ENCODE)

tone

remote con-

or

to troubleshoot tone

MOD

OUT

onto

control

jackonthe

phone

linesorany

maybeneeded. Activate the

TONE

REMOTE

front

mode

in the

MODULA-

panel. Select the two ap-

frequenciesofthe tone bursts by

Tone

B frequencies in the

guard

tone frequency

Hz.

Function tones (ToneB)vary by system.

table 3-10. Refer to your

Manual

for detailed

information.

to a max-

processor

SEL) 3

Hz

DISPLAY

The

and

has

control

func-

duration,

decoding

tone

bursts

front

panel

tone

bursts

program-

Two-Tone

(Tone

Tone

to

Control & Function 1 Freq. Systems

Fl

Transmit

F2 Transmit NIA

FI Transmit PL Monitor 2050 Hz R2

Off/R2

Off/Rptr

Rptr

On/PL

PL

Wild Card I

Wild Card

TABLE

Unlike the provides REMOTE switch issues ms

to

TONE

at

a level 10 dB below follows for as long as the

either the BURST

1950

Hz

wlo

PL

NI A

On

NI

A

On

1550/1450 Hz

Off

1550/1450 Hz

1350/1250 Hz

II

J150/1050 Hz

3-10.

other

signaling sequences, this special

no

repetitive sequences. Institute the

sequence by moving the

BURST

at

a level 30 dB below

A for

or

115

MODULATION

or

2 Freq. Systems

1950

Hz

1850

Hz

N/A

2050

Hz

1750/1650

N/A

1550/1450 Hz

1350/1250

1150/1050 Hz

Hz

TONEBFUNCTIONS

CONTINUOUS.

ms followed by

thatofToneA.Tone

thatofthe initial

CONTINUOUS levelofthese burstsisadjustable with the control, DISPLA

•

TONE

Connect Tone Remote unit's DISPLAY

and

maybeobserved with the

Y similar to any signaling sequence.

REMOTE

the Analyzer's

and

(DECODE)

output.

Monitor

VertiSinad/Dist

Select Signaling Sequence

FUNCTION. Sequence Decode Mode, as shown in figure enter Special displays frequency guard

tone

information

the once to reset.

GENERATEFM

PL)

936.0

COUNT

MODE

1)

FREQUENCY

RESOLUTION

1)

0.1

Hz

3)

10

Hz

5)

1

KHz

-

RANGE

FIGURE

(A)

INPUT

3-35.

Function

and

time

and

function tone (B).

for

F-l,

Obtain

information

SEL) 2

SEL) 6

FREQUENCY

SW

NOT

FREQUENCY

control

code #11.

duration

press either keypad cursor key

for F-2

04) 285.7750

*

10.723

AT

MAX

COUNTER

Paging Systems

1950

Hz

N/A

1850

Hz

2050

Hz

N/A

155011450

1550/1450 Hz

1350/1250 Hz

1150/1050 Hz

Hz

mode

TONE

MODULATION

The

sequence

TONE

B for 40

Tone

Switchisheld in

position.

MOD

LEVEL

MODULATION

input

to the

Select General

3-30,

The

screen

for

both

high level

After

obtaining

and

reset, etc.

MHz

DPL)---

2)

PERIOD

2) 1.0

Hz

4) 100

6)

Hz

AUTO

MHz

SENS

POS

-

DISPLAY

A A

The

and

3-17

• FREQUENCY

COUNTER

Figure 3-35 shows a Frequency Counter display. The internal Frequency Counter measures input from

35 MHz.

To

measure signals higher than35MHz,

10Hzto

the frequency error readout in the monitor mode. CRT

displays an autoranging

ator

to measure precisely and set offset oscillators, IF's,

PL

frequencies, and other external input signals. Fre-

output

allowing the oper-

quency counter operates in either generate or monitor

function. Use these codes

PL/DPL

off

the air. Enter number 1or2 to select

decode modes for measuring

either frequency counting or period counting. In the counting mode, select one or

automatic ranging. Frequency countingispreferred

above 1 KHz. Period counting

KHz. Adjust sensitivity with the switch and vernier. 90070offull-screen deflection. NO

INPUT

SIGNAL indication on the screen; too high

of

the five display resolutions

is

preferred below 1

OSCILLOSCOPE

For

best results, set the control for a

Too

little signal causes a

causes wandering or erroneous readings. The display shows the calculated input frequency, the five digit frequency readout with operator selected resolution, the acronym for the multiplier (Hz, KHz, MHz) and posi-

of

tion

the decimal point as identified in table1.The

system automatically ranges to display the best resolu-

of

tion operator

the input frequency consistent with table

selects a resolution inconsistent with table

l.

an appropriate warning message: INCREASE RESO-

or

LUTION

entire line.

DECREASE RESOLUTION replaces this

The

processor programs for a new resolution

and attempts a new frequency reading. When the proc-

on

essor updates a frequency, the asterisk

for 0.1 second. The warning message displays 14, whenever the input range

most sensitive position. Table

attenuatorisnotinits

3-11

lists the relationships

line12blanks

on

between frequency and resolution.

Counting

Multiplier

Frequency

Hz

KHz

MHz

Period

Hz

KHz

MHz

0.1 1

0.0-6000.0

NA

0.0-6000.0 0.0-600.0 0.0-6000.0

NA

2.0-999.9 10-2999

NA NA

Resolution Hz

-

NA

10

NA

0.0-9.99 0.0-29.9

NA

100

NA

NA NA

0.0-35.0

0.0-99.9

If

1000

NA

use

The

Vert

the

1,

line

and the corresponding dBm value. Use the voltmeter to check audio level, bias level, and power supply voltage. The voltmeter operates in generate Connect the probe RTL-4011A to the

or

monitor function.

Vert/Sinad/Dist connector. Move the cursor to the mode select position. Select AC, DC,

or

DISTORTION mode, as required. Implement fixed ranges with special function control techniques.

WARNING

THE

METER'S

TO

THE

NOT

ATTEMPT CUITS WOULD

WITH

CONNECT GROUNDl AC

POWER

SERIOUS

GENERATE

PL) 035.0

9.33

uV

+ 12.1 DBM

COMMON

LEAD IS

CONNECTED

ANALYZER'S CHASSIS GROUND. DO

TO

THE

FOR

MAINS

SHOCK

FM

MEASURE

ANALYZER, BECAUSE

THE

FLOATING

EXAMPLE,

WITH

HAZARD

FLOATING

DO

NOT

THE

COULD

04) 285.7750

CIRCUIT

MEASURE

ANALYZER.

RESULT.

MHZ

DPL) -

RF

LEVEL

-87.5DBM

V

AC

0

DVM MODE

1)

AC

VOLTS

2)

DC

VOLTS

3)

DISTORTION

MODE

BAT 11.0V

SEL) 1

ANT

FIGURE

Figure 3-36 shows an quency and the The bargraph responds to the magnitude

3-36.

AC

DVM displayofthe center fre-

PLorDPL

DVM DISPLAY

code in the generate mode.

of

the voltage in a modified logarithmic manner to provide a smooth nonranging analog display. Line

of

the primary

DC

power source.

MONITORFM

+24.0DBM

INPUT

V DC

0

----

DVM MODE

1)

AC

VOLTS

2) DC VOLTS

3) DISTORTION

14

displays the voltage

04) 400.0000 MHz

LEVEL

MODE

BAT 0.0 V

3.3 V

+.001

SEL) 2

ANT

'----'"

CIR-

THAT

TO

--

3.00 300

',---",

300

TABLE

• (DVM/DIST)

3-11. VALID

DlSPLA

DIGITAL

DISTORTION

INPUT

FREQUENCY

Y RESOLUTION

VOLTMETERI

MODE

VERSUS

The Analyzer providesanAC-DC voltmeter. The volt-

age automatically ranges between full scale values

la, 100, and 300 volts. The

CRT

displays the voltage

of

FIGURE

3-37.

DC

DVM

DISPLAY

"--../

1,

3-18

Figure 3-37 shows a put

voltage.Inthe

frequencies

above50Hz

MONITORFM

-30

DBM

03.0

PCT

DVM

MODE

I)

AC

VOLTS

2)

DC

VOLTS

3)

DISTORTION

ANT

DC

DVM display

DC

mode,

the voltage response to

attenuates at least 20 dB.

04) 285.7750

INPUT

LEVEL

DIST/SINAD

of

the +

MODE

BAT

ATTEN)0

or

- in-

MHz

2.94 mV

30.5 DB

SEL)

11.0 V

3

FIGURE 3-38. DISTORTION ANALYZER DISPLAY

Figures 3-38 TION quency(lKHz) monitor

and

3-12 show displays for the

mode

which

EIA

function. Select

automatically

measures fixed fre-

Sinad/Distortioninthe

mode3to

obtain

DISTOR-

generate

measure-

ments.

EXT

WATTMETER

1)

2.5 2) 5

4)

25

5) 50

7) 250 8) 500

FWD

WATTS

ELEMENT

3)

10

6) 100

9)

1000

NO.5

1.25

2.5

REV

WATTS

0.25

2.5

ANT

ATTEN)0

FIGURE 3-39. EXTERNAL WATTMETER DISPLAY

• EXTERNAL WATTMETER

To

measure

nect

Motorola's front wattmeter

elements. Figure 3-39 shows

D1SPLAY.Selectanentry

the

appropriate

the

nonranging flowing in the responds logarithmically in wattmeter rangeofthe selected element.

ing in Analyzer

to

the

of

full scale.

panel

forward

phone

adapter

and

reflected

wattmeter

jack

input.

antenna

(series ST-1200) with the

The

accessories include a

(RTL-4055B)toaccept the external

the

External

from

onetoninetoobtain

element

power

range.

digital reading for

forward

direction.

proportiontothe

readingona full scale

the

reverse direction displays similarily.

contributes

readout

Table

not

error

for

3-12 describes

more

power

equaltothe

The

detected power flow-

than levels greater

the

power, con-

Wattmeter

The

CRT

the

detected power

The

±2.5OJo

of

than

external

wattmeter

displays

bargraph

forward

wattage

The

reading

10%

elements.

or

Frequency

(MHZ) (Walls)

2-30 250 2-30 2500"

25-60 25-60

50-125 50-125

25-100

25-100 25-100 25-100

100-250 100-250 100-250 100-250 100-250 100-250 250 ST-1217B 100-250

200-250 200-550

200-550 200-550 200-550

200-550

200-550 200-550

500-1000 500-1000 500-1000

500-1000 500-1000 50 500-1000 500-1000 500-1000

" The N type connector

500-1000

••

Calibraledat1000 W, but useable to 2500 W.

...

Calibrated at

••••

Calibratedat250 W, useable to full scale.

Maximum

Power Connector Connector

5

10

5 ST-1283B

10

25

50 S1-1205B ST-1245B 100 250 ST-1207B 500····

5 ST-1212B

10

25 50 ST-1215B ST-1255B

100 ST-1216B ST-1256B

500····

2.5 ST-1221B S1-1261B

5 ST-1222B

10 25 50 ST-1225B ST-1265B

100 250 500""

2.5 5 ST-1232B' ST-1272B

10

25

100 250"" ST-1237B' ST-1277B 500'"

is

MHz

frequency range.

125

recommended for best accuracy in the

W, useable to full scale.

"N"

Type

Model

ST-1280B ST-1285B

ST-1286B ST-1287B ST-1204B

ST-1206B ST-1208B

ST-1213B ST-1214B

ST-1218B ST-1258B

ST-1223B

ST-I224B ST-1264B

ST-1226B ST-1266B ST-1227B ST-I228B

ST-I231B'

ST-J233B' ST-1234B' ST-1274B ST-1235B' ST-1275B ST-1236B' ST-1276B

ST-1238B' ST-1278B

"UHF"

Model

ST-1296

ST-1299

ST-1281B

S1-1284B ST-1282B

ST-1244B

ST·1246B ST-1247B ST-1248B

ST-1252B ST-1253B ST-1254B

ST-1257B

ST-1262B

ST-1263B

ST-1267B ST-1268B

ST-1271B ST-1273B

TABLE 3-12.

EXTERNAL WATTMETER ELEMENTS

• INTERMEDIATE FREQUENCY (IF) MODE

The

Analyzer'sIFenvelope displaysonthe

CRT theIFmodeisselected. Use theIFmodetoqualitatively and

quantitatively assess a

transmitter's

amplitude

ulation envelope.

Type

when

mod-

3-19

3.7

OSCILLOSCOPE

r

KHz

FIGURE

•

SCOPE

AC

Veri

3-40.

OR

SECTION

DIS

pI Sweep

I~O

M~'

OSCILLOSCOPE

Position

OSCILLOSCOPE

SCOPE

DC

liOtll

Ell.IHonl

SECTION

The Analyzer provides a general purpose 500 KHz oscilloscope with calibrated vertical input sensitivities and automatic

or

triggered horizontal sweep rates (figure 3-40). Both vertical and horizontal inputs may be switched between internal and external sources. Use the scope to analyze waveforms, view modulation signals (generated internally or externally), detect asymmetric modulation or audio distortion, trace signals, and troubleshoot. The vertical input

is

combined with the

BNC port that also serves as the input for DVM,

Sinad/Dist meter, and Frequency Counter. The Cover's accessories include probe #RTL-4011A for vertical and

horizontal inputs.

The horizontal time base generator provides a linear horizontal sweep from a minimum rate division to a maximum rate

of1us

of

100msper

per division in six decade ranges selectable with the Horizontal control. Use the oscillator Trigger Level switch in automatic or normal position to synchronize the horizontal time base to the vertical input signal. In automatic mode, the scope will trigger continuously. In normal mode, the scope will trigger when the vertical signal exceeds the

level set by the control. The smaller trigger level control adjusts the level

the time base. A separate front panel BNC

for the External Horizontal input enabled

at

which a positive going signal triggers

port

provides

by

a seventh

position on the time base control switch. The input sen-

sitivity varies continuously over the mlmmum range

from 0.1 volt per division to

10

volts per division. Ad-

just sensitivity with the Vert switch and control.

is

The time base

calibrated with the vernier control fully

clockwise. Normal operation does not include a char- '-.--/

or

acter display in either Scope AC

Scope DC mode.

However, if the operator also selects a SWEEP FUNC-

TION, then the first character line on the CRT identifies

the operating center frequency. The synchronized scope displays the swept response symmetrically about the selected carrier center frequency. When Scope AC or

is

Scope DC DISPLAY

selected in conjunction with sweep function, the oscilloscope horizontal input coupled to the sweep signal. When the scope traceisat the center taneous RF output frequency will be equal

of

the screen(±1 minor division) the instan-

to

the pro-

grammed frequency.

NOTE

In all cases the bargraph aids the autoranging digital scale. The bargraph responds in a modified logarithmic manner that provides a smooth nonranging analog display. In other words, the analog display same amount for a 1 volt change

will

change the

at10volts as for a

25

volt change at 250 volts.

Function

Power Monitor (above 1 Frequency Error FM Modulation AM Modulation DVM (AC

or

DC)

DIST/SINAD Ext Wattmeter

Analog

Full Scale Range

w)

0·125w 0-15KHz 0-100KHz 0-100070 0-300V

oto 100% (Dist)

-60db to Wattmeter Element

Bargraph

Odb

(SINAD)

dependent 0-2.5w to l000w

SPECTRUM ANALYZER USAGE

The indicated is

30db less than actual input at the RF

rf

signal level in the spectrum analyzer mode

In/Out

port.

When using the spectrum analyzer for measuring harmonicsoftherfcarrier, itisnecessary to limit the levelofthe carrier to less than -20dbm (RF

In/Out

port) or less than

-50 dbm (Antenna port) with an external attenuator in order to maintain the correct harmonic relationship to the rf

carrier.

is

---./

rf

3-20

'--/

ADDENDUM

• SELF-TEST DISPLAYS

The self-test check may be executedatanytime during system operation by executing special function 72.

The screens for the different self tests are outlined below. destructive RAM test volatile memory, then stores sequential numbers into RAM to check for any addressing problems RAM.

displayed, see Figure 3-41. The operator may enter a "0"

if operator does not respond in a minute, the testing will proceed even without an entry.

If

the self testisinitiated by a power up, the

is

performed first.

If

an errorisdetected, the following screen

he

wishes to proceed even if an error exists.Ifthe

It

erases

in

the

A NON-VOLATILE MEMORY FAULT

HAS BEEN DETECTED.

CONSULT

TROUBLESHOOTING INSTRUCTIONS

FOR CONTINUED OPERATION:

is

PRESS 0 PRESS I

THE

OPERATOR'S MANUAL

(PN68P81069A66)

FOR

TO

CONTINUE

TO

RE-INITIALIZE

WITH FACTORY PRESETS

The Test Equipment Service Center should be consulted

to remedy the error.

SELF TEST

*ERROR

DESTRUCTIVE RAM TEST ERROR SCREEN

After the destructive RAM testisperformed on volatile memory, then a non-volatile memory check formed to check to see that a bit pattern stored there has not been corrupted. displayed, see Figure 3-42.Ifthe operator wants to

reinitialize the non-volatile RAM, a "1" existing non-volatile memory error has been detected, a "0" sists, the battery on the microprocessor board should be checked. After a minute, the test will proceed

had been entered.

IN

VOLATILE

PUSH 0 TO CONTINUE

FIGURE 3-41.

If

it has, the following screen

RAM*

is

desired, even though an

is

entered.Ifthe error per-

is

entered.Ifthe

as

if a "0"

per-

FIGURE 3-42.

NON-VOLATILE RAM ERROR SCREEN

After the non-volatile RAM test on power up, or if the operator initiates a self test with a special function 72, a

is

checkerboard pattern

3-43. This serves as a visual check

verify proper alignment

xx xx

XX

xx

xx xx

XX

xx xx

XX

XX XX

xx

XX

xx

XX

XX XX

XX

xx

XX

XX XX

XX

is

XX

FIGURE 3-43. CHECKERBOARD PATTERN

XX

displayed on the screen, see Fig.

of

the CRT.

xx

XX

XX XX

XX

XX XX

XX

SELF TEST

XX XX

XX XX XX

xx

XX XX XX

XX

XX XX

XX

XX XX

XX XX XX

the display to

XX

XX XX

XX

3-21

A non destructive RAM testisperformed that stores known characters to each RAM location. The value read back and verified. The original valueisfinally

If

replaced. shown; see Fig. 3-44. The

an errorisdetected, the following display

operator

may enter a "0" to

continue the self test. Otherwise, the test resumes

automatically after about a minute.

is

SELF

TEST

is

*CHECKSUM

COMPLETE

ERROR

IN ROM*

ROM NUMBER

Ml

M2

M3

M4

M5

SELF

TEST

COMPLETE

*ERROR IN VOLATILE RAM*

PUSH0TO

NON-DESTRUCTIVE RAM TEST ERROR

CONTINUE

FIGURE 3-44.

Next, a checksum checkisperformed to verify that the PROM this type ror

program has not changed. The error screen for

of

errorisshown in Fig. 3-45.Ifa checksum er-

is

detected

in

an

PROM

device, then

an

alphanumeric specifier identifies the socket itisin. M1

identifies the

PROM

microprocessor board, M2 the 2nd from the left,

3rd from the left, and "0" to allow testing to proceed.

device in the leftmost socket on the

M3

the

so

on.

The

operator can enter a

If

no entryismade in a

minute, the test will proceed automatically.

PUSH0TO

FIGURE 3-45. CHECKSUM ERROR SCREEN

If

a non-destructive RAM error

CONTINUE

NOTE

and

checksum error are

both detected, then they appear on the same screen.

is

The testing tern with a "SELF

completed with a final checkerboard pat-

TEST

COMPLETED"

message.

3-22

4.0

SERVICE

This sectionofthe

from pocket pagers to repeaters.

Analyzer

of

log

These

are responsibility for their accuracy, applicability, recommended test methods

SHOP

and

how to set controls

all measurements

typical applications

SETUPS

manual

guides troubleshooting, diagnosing,

It

contains

and

indicators to

and

information

and

are

not

and

specifications.

SECTION 4

APPLICATIONS

and

adjusting communications

informationonhow to connect equipment under test to the R-2001 D

obtain

importanttoyour

all-inclusive.

or

safety. Always refer to your

the anticipated

operation.

CAUTION

Not

every test works with every transceiver.

CRT

display. Maintain a permanent written

own

transceiver's service

equipment

Motorola

ranging

takes no

manual

for

The Analyzer's DVM input cuits, such as certain receiver audio

is

unbalanced (ground referenced). Useanappropriate

interface to measure balanced cir-

outputsortelephone lines.

4-1

RECEIVER SENSITIVITY TEST

12 DB SINAD

AUDIO DISTORTION

®

MOTOROLA

CO"IIlUlfICl1l0IiS

sysnlllUllYlU

~

R~lnJOut

..

I,'ONH.

.01-1

MHt

MODULATION

..a. Co",

~Oll

BUIst

Code

Synlh

Mode

o

~",'OPL

o

PL,DPLtnv

o rone

...

o

ToneS

o

,_.SeQ

o

Tone

Remole

~@]

'---.....---

POWER

fiO:,....,

v::::!J

i

8

'"

AC

O

HOflz

EJ.tHo,,,

©

OtOI1

..

enA.~d~

@10mm

@]~00

0000

@

Yo.

•

.....",$,".d/DlII

(+)

I

DVM/COunl,'

~

,.

In

"g'

@

•

'len

oHoril

DISPLAY

o G

...

o

M.~.,

o

SIl!c:IAft!lI~ltr

0llPlUG,n

RFMlmOfy

8

o

Sigl'lllJng

o

F,ltqCounllt.

o

OVM.'Oisr

o

ExtWllIrnelt.

0'"

o

~op.eAC

o

Sc:opeOC

@]@]

·Mo"MI.

••

FUNCTION

Gene.".

~IrAOnltol

Seq

o

oM

o CW

o

AM

o

SSBIOS8SC

o

SWP

o

SWP

g]@]

FUNCTION

DIGITAL

ANALOG

INDICATOR

NEG

DEVIATION

DIST

READING

SINAD

FIGURE 4-1.

ANT

n

MOBILE

RECEIVER

GENERATEFM..)

PL)

100.0

RF

LEVEL

lOOOuV

5.0

PCT

DIST/SINAD

-60

DEV

-3.0

-100

12 DB SINAD TEST SETUP

KHZ

4-2

SPEAKER

50000

MHZ

DPL) .

-47.0DBM

26.0 DB

+3.0

+100o

AND

FREQUENCY

..

DPL

RF LEVEL

DIGITAL DISTORTION READING

o

POS ANALOG

DEVIATION INDICATOR

DISPLAY

CODE

OUTPUT

SINAD

DEVIATION

OR

Use

the

R-2001D

signal

generator

and

RECEIVER SENSITIVITY TEST

12 DB

SINAD

AUDIO DISTORTION

SINAD

metertomeasure a receiver's

performance

by the following procedure:

1. As shown in figure 4-1,

nect the Analyzer's

2. Set

DISPLAYtoGen/Mon

3. Select

4.

5. Set

6.

the

RF

Adjust tion, set

a. With a

b. Read %

about the

From

1KHz Level

MODULATION

lOOOuVRFinput

the receiver be set to

RF

Step

2uV.

display.

the

RF

distortion

attenuatorto-llOdB

Adjust

Vert/Sinad/Disttothe receiver's

carrier frequency fromanRF

control

the

LEVELonthe display, read the receiver's 12dB

connect

Mtr

for

switch to

level,

produce

directly

attenuator

the

Analyzer'sRFIn/Outtothe

mode. Select a

60070

of

rated

Off

adjust

the volume

rated

audio

from

the

DlST

and

the variable

(lOdB steps)

and

FUNCTION

Memory

deviation as indicatedonthe Ext Level controltoOff.

controltorated audio power

power before measuring 12dB

/SINAD

and

the variableRFcontrol

audio

output.

table channel

scale.

control

to mid-range.

antenna

and

set the

SINAD

connectorofthe

Disable all

numberorenter directly from the keypad.

sensitivity in uV

PL's

FUNCTION

CRT.Toprevent spurious noise

output.

SINAD.

The

display's

until a 12dB

receiver

and

open

the

switch to Generate.

EIA

RS-204-C specifies

RF

LEVEL

SINAD

and

reading

dBM.

under

Squelch.

should

appears

test.

modula-

indicate

Con-

that

on

4-3

RECEIVER SENSITIVITY TEST

20

DB

QUIETING

@ItIfOTOROLA

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DISPLAY FUNCTION

o

C",.'MonMI.

o

ModllllllQ(\

o

Sp.(I"'n.l~u,

8

Ouple.C,n

IIFMemOfy

o

S'gn

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o

F,.q

Counter

o

UVI'l'I,DIST

o

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Squelch

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011

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ew

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SWP

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SWP.OI.IMHI

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© ©

ANT

n

MOBILE

RECEIVER

GENERATE FM

PL

...

0.50uV

o

DVM MODE

I

AC

VOLTS 2 DC VOLTS 3 DISTORTION

RF LEVEL

VAC

00) 150.000 DPL

-117.0

MODE SEL)l

SPEAKER

MHZ

...

DBM

300

FIGURE

4-2.

20

DB

QUIETING TEST

4-4

SETUP

AND DISPLAY

RECEIVER SENSITIVITY TEST

20 DB QUIETING

1.

Connect the Analyzer to the receiver under switch to Monitor and select FM or

2.

Turn

on the receiver (unsquelched)

rated audio power). Read the audio noise voltage fed to the Analyzer. Note the noise reading (REF) in dBm.

and

CW

FUNCTION.

turn

test,

as shown in Figure 4-2. Set

up the receiver audio gaintofeed audio noise to the Analyzer (at least

DISPLAYtoDVM/DIST,

FUNCTION

1/4

3. Set

4. Read the

FUNCTION

REF

above (0.

screen.

switch to Generate. With all modulation off, adjustRFLEVEL

!OX

the

REF

Voltage).

RF

LEVEL reading required to produce 20 dB quieting in uV (left side)

until display reads 20 dB less than

and

dBm (right side) on the

CRT

4-5

SQUELCH SENSITIVITY TEST

®

MOTOROLA

dO

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@:i5i

DUPLEX

GEN 0

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0,

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all

Output

CAUTION

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11'110111

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KH,

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e

Ell

VI

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Vert

Ver1ISIn~,Di,1

DVM/Counlerln

(@

POWER

00

ft

Standby

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,

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i

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OSCILLOSCOPE

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POSllion

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OISPLAY FUNCTION

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Modulation

o

SpeCIA

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"'Ple.cen

8

RF

Memory

o

Si;n.l,ng

o FreQCOllnltl

o

DVM/DIST

o

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0"

o

SUlpe

....

C

o S<:opeOC

@]

MONITOR

Squelch

O"OSi

Im·9·,Opt~

High.a.

La"~Nlno_Y

OemodO..,

®

,yle'

SeQ

O

'

WIClr

@o'",

Mon,to.

O'M

Oew O'M

o

SSBrOS8SC

o

SWP

o SWP

~@J

....

olume

Q"

ow

~

e'o

o

rMODULATION

....

Code

\·10

MHI

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MH.

COClf

S,n\h

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"0

011

ModO

..,

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0"

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..

l

S.,.flU'l

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a PL,.IOPlln

o

TOMA

o

ToneB

o

ToneSeq

o foneRemole

~@]

e-.tL

....el

0

011

f)'

~

e.l

Mod

...

In

n

ANT

SPEAKER

MOBILE

RECEIVER

FIGURE 4-3. SQUELCH SENSITIVITY TEST SETUP

~

4-6

'-----

1.

Connect switchtoGenerate

2.

To to

3.

Adjust To

4.

Place the

5.

Return until the receiver

a.

the

check

Cont

in the

the

check

FUNCTION

point

FUNCTION

On

the

receiver.

PLlDPL

carrier

where

Analyzertothe

FM,

squelch

PLlDPL

Code

Synth

squelch,

switchtomonitortoremove

the

receiver

switchtoGenerate.

just

display,

read

receiver

and

enter

sensitivity,

Mode.

Level

controltoprovideanominal

turn

off

just

unsquelches.

minimum

SQUELCH SENSITIVITY TEST

under

test,asshowninfigure 4-3. Set

the

frequencyofthe receiver

enter

the

proper

all

modulation.

theRFoutput

barely

quiets.

Increase

squelch sensitivity as

the

PLlDPL

750Hz(500Hz- 1

RF

LEVELbyadjusting

uVordBm.

under

code

from

DISPLAYtoOen/Mon

test.

from

the

keypad.

KHz)

the

receiver. Set

the

attenuator

Thisisthe

threshold

Mtr,

Set

MODULATION

deviationofthe

the

receiver's

squelch

and

FUNCTION

switch

PLlDPL

Variable

sensitivityofthe

code.

control

controls

to

---

Determine

b.

settomaximum

6.

Enable minimum, or

Set

1.

Adjust

2. deviationonthe

Change

3.

Connectasuitable

4.

ceiver uses a

5.

Connectascope

ortothe

6.

Connect readingonthe

7.

Calculate

the receiver's

dBm.

DISPLAYtoGen/Mon

attenuator

DISPLAYtoDVM/Dist

isolation

the

tight

squelch

tightness.

PL/DPL

as in

step

5, until

and

Variable

DEV

KHz

resistive

"floating"or"bridge"

probetothe

transformer.

RF

In/Outtothe

DVM

AC

scale which

the

audio

power

sensitivityofthe

squelch circuit.

the

receiver's

AUDIO

Mtr

and

FUNCTION

controlsto1000 uV

scale.

Push

and

use the

load,

that

can

output

Analyzer's

receiver's

does

output

by the following

receiver by

Fully

open

the

squelch

the

dissipate the receiver's

Vert/Sinad/Dist

antenna

just

POWER

switchtoGenerate

(-47

Variable

amplifier,

not

controlinto

keypadtoselect

connect

port.

have

clippingorother

formula:

opens.Onthe

OUTPUT

dBm).

input

Adjust

repeating

carrier

Adjust

DVM

rated

a I: 1

connector

the

steps 4

squelch

display,

and

5 with

control.

read

the

TEST

FM.

Enter

the

theIKHz

select theRFIn/Out

AC

function.

audio

output,

isolation

and

receiver's

distortion

Level

in placeofthe

transformer

clip

the

volume

control

in excessofradio

the

receiver's

Increase

coded

squelch

RF

frequency

controlto60010ofthe

connector.

across

probe

across

for

squelch

theRFLEVEL

sensitivity in uV

and

speaker.

the

load

the

the highest voltage

specs.

PL

(If

resistor.)

load

control

from

code.

rated

the

re-

resistor

8.Ifthe trace

receiver

through

does the

not

audio

produce

stages

Power

rated

and

Out

audio

locate

(Watts)

power

the

problem.

=

output,

Load

4-7

use

the

(AC

Voltsp

Resistance

Analyzer's

(Ohms)

OSCILLOSCOPE

andascope

probe

to

AUDIO FREQUENCY RESPONSE

--------

(1'''-

LIMITS

LOUDSPEAKER

USAGE

FOR

300

I...........

HZ

"

.........

'--....

'-......

---........

~.,.

-I.,

..

(J

tlb

................

.............

<

~

8,

til}

~

°Cl'

..

~IJ

1

,,~

~

KHZ

'--....

..........

.............

>-<

.............

---------

>-<

.............

..........

...........

3

I

KHZ

OdB

REFERENCE

FIGURE

LIMITS

HEADPHONE

LINE

4-4. AUDIO FREQUENCY RESPONSE; EIA STANDARD RS-204C

FOR

OR

USAGE

4-8

1.

Use the keypad to enter the frequency

AUDIO FREQUENCY RESPONSE

and

PL/DPL

code (if any)ofthe

receiver under test.

FUNCTIONtoGenerate

2. Set

3. Select tone memory display to

Tone A,

Adjust

4. 5KHz system. Change

5. Connect the Analyzer's

In/Out probe.

6.

Adjust the receiver's volume controltoobtain a reference level reading on theACvolts scale whichisfreeofclipping at

any frequency within the 300 to 3,000

7.

Refertothe audio response curve in the receiver's Service Manual. memory screen to the value for each point on the curve to be measured.

8. Maintain FM deviation audio level

9.

EIA

RS-204C specifies the frequency response for NBFM receivers over the rangeof300 to 3000Hzas follows:

a.

Audio

per octave curve, with reference taken as 1000 Hz.

Audio

b.

from a

and

change

the Code Synth Level control for 20%ofrated deviationonthe DEV

connector. Connect the

If

the speakeris"floating", use an isolation transformer to avoid shorting the

at

this frequency. Note this audio level. Repeat this step for each frequency tested.

response for receivers using loud-speakers shall not vary more than +2 dBor-8

response for receivers using either headphonesortelephones lines shall

standard

6 dB per octave curve, with reference takenat1000 Hz.

FM,

attenuator

and

set

Tone

DISPLAYtoGen/Mon

DISPLAYtoDVM/Dist

RF

In/Out

at

20%ofthe rated deviation, as set in step 4.

out

Vert/Sinad/Dist

and

Variable level controls to 1000 uV (-47 dBm).

A to 1000 Hz. Set

Mtr.

and select DVM

to the receiver's

input connectortothe receiver's speaker

Hz

band. Note this reading in dBm as the reference value.

MODULATION

antenna

AC

port.

switchtoCont,

KHZ

scale, for example: 1 KHz in a

function. Push

the Variable control in to select

Change

the Tone A frequency on the

DISPLAY

not

vary

Code

output,

output

to DVM

dB from a

more

Synthesizer

stage.

AC

than

+1dB

using a scope

and

standard

or-3dB

Mode

the

RF

tone

read the

6 dB

10.

Addorsubtract the 1 KHz reference value from each reading taken in step 7. Plot the resulting values on a curve compare them with the 6 dB per octave curve in your receiver's Service Manual or with the tion RS-204C, as

shown

in figure 4-4.

standard

MODULATION ACCEPTANCE BANDWIDTH

1.

Perform necessary to perform this test with the volume control setto10%ofrated audio

2. Increase theRFoutput creased 6

3.

Turn amountofdeviationonthe display as the modulation acceptance bandwidthofthe receiver.

4. A typical modulation acceptance value for a receiver under test. Any loss

receiver's

the12dB

dB=0.7

the 1 KHz Level control clockwisetoincrease the deviation until the

IF

circuit.

SINAD

uV.

of

Sensitivity Test with the Analyzer in the same setup as shown in figure 4-1. Note:Itis

level 6 dB above the12dB

modulation acceptance bandwidth indicates improper alignmentora component failure in a

SINAD

level, to double the voltage.

is

7 KHz. Refertothe specification for the specific receiver

SINAD

output.

For

example, 0.35 uV in-

level returns to12dB. Read the

EIA

and

specifica-

4-9

RF PRESELECTOR SHAPE & BANDWIDTH

CO••UlllCAlI0IlS

@MOTOROLA

srSTUI AIl,\lYW!

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4-10

---------

RF PRESELECTOR SHAPE & BANDWIDTH

Use this test to insure proper preselector alignment for multi-frequency receivers. Tune the preselector for greater rejection

of

an interfering frequency from nearby transmitters.

1.

Connect the Analyzer's

RF

In/Out

to the antenna connectorofthe receiver under test. Connect the Analyzer's Vert/Sinad/Disttothe RF probe. Connect the probe to the first available low impedance point foHowing the preselector, as shown in figure 4-5.

2. Disable the receiver's mixer injection.

3.

Set DISPLAY to Scope DC,

10

clockwise to

MHz.

FUNCTIONtoSWP

1-10

MHz

with switch in Generate, and Dispr/Sweep control fully

4. Enter the proper receiver frequency.

5.

Set RF Step

attenuatortoOdB

and

RF Variable control to mid-range.

6. Use the Ext V

OSCILLOSCOPE

/Div

control to 0.01 and its inner knob fully clockwise to C I position.

7. Adjust the RF

output

Vertical control to move the

level to produce a

CRT

horizontaljwee

displayatthe lowest eadable level to minimize the possibilityofover-

p

line to the bottom

of

the graticule. Set the

loading the circuits being tested.

8.

The 3db (.707ofpeak) and 6db (.50ofpeak) bandwidth points can be checked. Each responds to 1

MHz

with dispersion control fully clockwise and to

.1

MHz

major

horizontal division cor-

with dispersion control fully counterclockwise. The response should be checked for uniformity and symmetry. Tuning adjustments can be made accordingly.

4-11

RECEIVER FREQUENCY

ADJUSTMENT

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UP

UNIT UNDER

4-6. FREQUENCY

ADJUSTMENT

LOOP

TEST

SETUP

4-12

RECEIVER FREQUENCY ADJUSTMENT

Connect the Analyzer to the receiver under test, as shown in figure 4-6.

1.

~

Set DISPLAY to Spectrum Analyzer (1.5 uV sensitivity).

2.

receiver's local oscillator for approximiate frequency

Enter

and

spectral purity.

the proper local oscillator frequency. Check the

3.

Change DISPLAY to

receiver so that the local oscillator signal

Change

4.

FUNCTION

Gen/Mon

to Generate

Mtr

and

FUNCTION

is

coupled to the Monitor input.

and

enter the proper carrier frequency. Introduce sufficient signal level into the

to Monitor. Place pick up loop in close proximity to the

RF input to fully quiet the receiver and adjust discriminator to zero volts DC for receivers requiring such an adjustment. For

receivers with

quency for minimum distortion

quadratureormore critical detectors, adjust detector tuning control or local oscillator injection fre-

or

best SINAD performance.

5. For pagers with the battery saver feature, check the local oscillator for pulse operation without removing the unit from its housing.

4-13

TEKA24A

I

®

'""'PO

MOTOROLA

."

POWER, FREQUENCY, AND DEVIATION

~

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AUDIO

IN

FIGURE 4-7. TRANSMITTER TESTS SETUP

4-14

'-----

BASIC FM TRANSMITTER TESTS

POWER, FREQUENCY,

AND

DEVIATION

A. Basic Terminated Measurements

1.

Connect the Analyzer's RF

In/Out

to the RF

outputofthe unit under test and make the other connections as

shown in figure 4-7.

CAUTION

For

power

output

measurements, connect a transmitter only to the Analyzer'sRFIn/Out.

Do

not connect it to the

Analyzer's antenna port. The

built-in RF load dissipatesupto 50 W for three minutes and up to

125

W for one minute.Ifa technician keys

a high-power transmitter into the Analyzer for a time long enough to threaten overheating the power-measuring

RF

circuitry, the system's audible alarm sounds and the display changes to read the

LOAD OVER-TEMP warning

to un-key.

2.

Set DISPLAY to old. Enter the correct transmitter carrier frequency via the keypad

Gen/Mon

Mtr,

FUNCTION

switch to Monitor FM, and

or

RF Memory table.

MONITOR

Squelch control to thresh-

3. Set the

unsquelch the monitor.

attenuator

to

-30

dB.

For

low-power transmitters, it may be necessary to reduce the attenuator setting to

Too

highanattenuator

settingortoo

tight a squelch setting inhibits the frequency error display. Accurate measurements require sufficient signal level from the radio to fully quiet the Analyzer's Monitor receiver.

4. Use good quality cables ment, especially at

5.

Read any transmitter frequency error indicatedonthe display.

6. Refer to the radio's service manual to determine if

termine

any adjustments are required.

7. Proceed to check

Turn

off

a.

all modulation sourcesatthe Mod

of

minimum length because cable-loss can be a significant factor in RF power measure-

UHF

and above. Key the transmitter

MODULATION

as follows:

and

read the power indicatedonthe display.

if

POWER

and FREQUENCY are within spec limits and de-

Outofthe Analyzer in order to check the levelofPLorDPL

deviation from the transmitter.

b. Key up transmitter with appropriate

PLorDPL

enabled and read

DEVIATION

from the

GEN/MON

DISPLAY. Refer to radio service manual to determineifadjustmentisnecessary.

c.

With

PLorDPL

modulation properly set, introduce 1 KHz modulation to transmitter audio input by ad-

justing the 1 KHz LEVEL control. Check service manual to determine the minimum level required for proper

MOD

MIC sensitivity as well as the maximum level required to insure proper IDC function. Read

on the DVM by temporarily switching the DISPLAY to

d. At the maximum audio input level, read DEVIA

DVM/DIST,

nON

on the display and verify

ACVM.

that

it falls within the maxi-

OUT

mum rated system deviation specified in the radio's service manual. Make adjustments as required.

MTR

levels

e. Verify proper MIC sensitivity by setting Mod

and reading corresponding DEVIATION

B. Off-The-Air Measurements.

1.

Connect the TEKA-24A pick up antenna to the Analyzer's antenna connector. Pull the Variable control

Out

on

the display.

Level to the minimum threshold level per the service manual

able the antenna port.

2. Operate the transmitter under test either into its own antenna

3. Set DISPLAY to

Gen/Mon

Mtr,

FUNCTION

SWITCH

or

into a dummyRFload, as shown in figure 4-7.

to Monitor FM,

MONITOR

Squelch control to thresh-

old, and enter the correct carrier frequency.

4-15

out

to en-

BASIC

POWER, FREQUENCY,

4. Adjust the attenuator as in step A-3 above, to produce an adequate signal level to the Analyzer's Monitor receiver.

FM

TRANSMITTER

AND

TESTS

DEVIA

nON

5. Adjust the transmitter and follow the same procedure outlined

quency and deviation.

6.

This same method may be used to verify frequency and deviationofa remotely located transmitter by reducing the

attenuator setting to fully realize the 1.5uV for lOdb SINAD sensitivityofthe Analyzer's "of-the-air" monitor function.Toinsure sufficient measurement accuracy however, make sure the Monitor receiver is fully quieted as

in step A-3 above.

C. "In-Line" Power Measurements

1.

Referringtofigure

ment in the50ohm antenna line with the arrow pointing towards the antenna. Plug the adapter's cable into the Analyzer's Ext Wattmeter jack. Refer to table 3-12 in this Manual for further descriptionofelements.

2.

Set DISPLAY to Ext Wattmeter, FUNCTION switch to Monitor FM, FUNCTION switch and attenuator do not function but should be set in case RF powerisinadvertently applied to the RF

3.

Use the keypad to select the scale that corresponds to the ST-1200 element

4.

Key

In/Out

the transmitter. Read forward and reflected poweronthe display.

4-8,

connect

connector.

the

RTL·4055B

in·line

wattmeter

in

steps A-5 through A-7 above, to measure fre-

adapter

with

the

and

the attenuator to

in

use.

appropriate

~T-l200

-30

dB. In this step,

series

'-----....-

ele-

'-../

4-16

"--'"

BASIC FM TRANSMITTER TESTS

POWER, FREQUENCY, AND DEVIATION

dB

Ouipul

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TRANSMITTER

FIGURE 4-8. TRANSMITTER TEST SETUP;

4-17

POWER

MEASUREMENTS

AUDIO DISTORTION

@MOTORO&.A

dO

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A,,,,",

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OUTPUT

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TRANSMITTER

FIGURE 4-9. AUDIO DISTORTION SETUP

4-18

AUDIO

INPUT

',-

AUDIO DISTORTION

1.

Before starting this test, adjust the transmitter's

2. Connect the Analyzer to the transmitter, as shown in figure 4-9. Turn

off

the

3.

4.

Key

the transmitter and adjust the 1 KHz MOD Level control for

Gen/Mon

5.

Select

Unkey the transmitter.

MODULATION

Mtr DISPLAY.

DVM/Dist

DISPLAY and mode 3, DIST

switch. DisablePLor

IDe

to specification.

DPL.

/SINAD.

Read transmitter % DISTORTION from the display.

60070offull-rated transmitter deviation on the

4-19

AUDIO FREQUENCY RESPONSE

®

MOTOROI.A

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TRANSMITTER

FIGURE 4-10. AUDIO FREQUENCY RESPONSE SETUP

4-20

AUDIO

IN

"-../

AUDIO FREQUENCY RESPONSE

1.

As shown in figure 4-10, connect the Analyzer's RF

In/Out

porttothe transmitter's RF output and the

VertiSinad/ Dist input jacktothe Mod Out jack through a BNC tee fitting connected to the transmitter's microphone audio input. Disable

2.

Select DVM/Dist DISPLAY and set it to mode1,AC DVM. Set FUNCTION to Monitor FM, attenuator to -40 dB, MODULATION to Cont and Tone A. Use the keypad to enter the transmitter frequency. Turn

PL

and

DPL.

off

the 1 KHz and Ext

Mod controls.

3.

Set DISPLAY to Signaling Sequence. Use the keypad to enter mode

1,

AlB

encode, Tone A and enter the frequency

to be tested.

4. Set DISPLAY to

Gen/Mon

Mtr, key the transmitter, and adjust Code Synth Level control to provide

300/0ofrated

transmitter deviation.

5. Change DISPLAY

to

DVM/Dist. Note both the transmitter MIC Audio input level in dBm and the test frequency, for

later use.

6. Repeat the above procedure, adjusting Code Synth Level to maintain 30%

of

rated deviation, for each frequency to

be tested.

7.

Plot the tions. EIA RS-152B specifies that a transmitter's frequency response be within

data

points obtained above in db relative to the 1 KHz Level and compare with the transmitter's specifica-

+1 or -3 dB

of

a +6 dB per octave

pre-emphasis from 300 to 3000 Hz (6 dB per octave roll-off allowed between 2500 and 3000 Hz). Refer to figure below, Frequency Response diagram.

.5db

o

db-';"+¥~-----------.,..r;;.'-

-3

db

4-11

10.5 db

300

Hz

1000

Hz

FIGURE 4-11. AUDIO FREQUENCY RESPONSE;

4-21

2500

Hz

EIA

STANDARD RS-152B

3000

Hz

AM MODULATION TEST

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AM

TRANSMITTER

FIGURE 4-12. AM MODULATION TEST SETUP

~IC

'-.-/

4-22

"'---'

AM

MODULA

1.

Connect the Analyzer'sRFIn/Out FUNCTION

2.

Connect the Analyzer's Mod

phone input using a BNC tee connector.

3.

Set DISPLAY to

4. Adjust the I KHz Level control to provide the proper input signal level to the transmitter. Refer to the transmitter's service manual to obtain the value for this level.

5.

Key

the transmitter. Read

6.

To

check the transmitter's distortion, connect the Analyzer's Demod

jack. Set DISPLAY to

to Monitor AM.

DYM/Dist

0J0

DYM/Dist

to the

output

Out

connector to its

and the

AM

AC

on the display. Change to IF DISPLAY to observe the RF envelope's distortion.

and Distortion. Read

connectorofthe transmitter under test, as shown in figure 4-12. Set

voltmeter function.

nON

Vert/Sinad/Dist

070

TEST

distortiononthe display.

input connector and to the transmitter's micro-

Out

connector to the

Yert/Sinad/Dist

input

4-23

AM MODULATION LINEARITY TEST

1.

Connect the Analyzer's RF

In/Out

to the

outputofthe Transmitter under test, as shown in figure 4-13.

2. Connect the OSCILLOSCOPE Ext Horiz input connector to the scope probe. Set Horiz control to Ext, DISPLAY to Gen/Mon

Mtr, and set to correct transmitter frequency.

3. Change

DlSPLAYto

IF and set FUNCTION switch to Monitor. Connect the Analyzer's Mod

Out

jack to the trans-

mitter's microphone audio input.

4.

Connect the scope probe to the secondaryofthe transmitter modulator stage

CAUTION

Do

not

exceed 300 volts maximum to the Analyzer's DVM input.

5.

Key the transmitter. Adjust the I KHz Level control to cause the displayed trapezoid figure to come tO'a point at one end. This corresponds to display

6.

Observe the resulting trapezoid figure. The top and bottom sidesofthe trapezoid should be straight. Any curvature

just

fill the screen,

100070

AM modulation.Ifnecessary, adjust the horizontal vernier control to make the

output

transformer.

indicates non-linearity in the transmitter final amplifier stages.

®MOTORO&;A

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n

AM

TRANSMITTER

FIGURE 4-13. AM MODULATION LINEARITY TEST SETUP

TO

MIC

n

4-24

'-----"'

ANALYZERIFDISPLAY

INCIDENTAL

UNMODULATED

AM

MODULATION

AM

FM

CARRIER

MODULATED

WITH

x =

INCIDENTAL

PE

A K

FM

CARRIER

AMPLITUDE

AM

Figure 4-14 shows a typical AM. Use the IF mode modes),

and

to check

IF

DISPLAY, its modulated FM carrier with incidental AM, and a formula for calculating %

to

view the modulation envelopeoftheRFsignal, to detect

AM

depthofmodulation. Because theIFDISPLAY provides only a qualitative indication, use the

Monitor DISPLAY with AM Monitor

Y =

VALLEY

AMPLITUDE

X-V

%

AM

=-

FIGURE 4·14. ANALYZERIFDISPLAY

FUNCTIONtodetermine precise AM measurements.

X+Y

X100

and

examine incidental

AM

(in

FM

4-25

COMMUNITY REPEATER MODULATION

1.

Connect the Analyzertothe repeater under test as shown in figure 4-15.

nity Repeater. Disable the receiverPLand

2.

Set

DISPLAY

MONITOR

to DVM,

FUNCTION

BW switchtonarrow, Squelch control to threshold,

set the squelch to threshold.

switch to

Monitor

FM,

The

diagram illustrates a

and

MODULATION

and

Duplex Gen switch to off.

switch in

MICOR

off

position. Set

Commu-

~

3. Set the

attenuatorto-30

squelch the monitor.

Too

dB.

For

high an

low-power transmitters, it may be necessarytoreduce the

attenuator

display.

4. Enter the

proper

5. Move the display cursor down dicated

6. Set

on

DISPLAYtoOen/Mon

transmitter frequency.

the display, to

to

DVM

put

1 voltof1 KHz test tone into the transmitter modulation limiter.

Mtr.

Key the transmitter.

on the display. Un-key the transmitter.

7. Disconnect the cable from the Duplex Gen on repeat.

Mod

8. Disconnect the cable from the

DISPLAYtoDuplex Gen,

9. Set TOR

Image/Duplex switchtoHighorLow as required.

10. Move the display cursor down Turn

off

the 1

KHz

11.

Level control. Set

control for 0.75 KHz DEV indicated

12. Set nector.

FUNCTION

The

switchtoMonitor. Reconnect the cable from the Duplex Gen

transmitter should now key-up.

Out

FUNCTION

toPLor

on

settingortoo

and

enter 1 for

AC

Adjust

output

to the receiver

connector, leaving

switch to Generate FM,

DPL

and

enter a

MODULATION

the display.

attenuator

setting to un-

tight a squelch setting inhibits the modulation deviation

mode.

Adjust

the transmitter

the 1

KHz

Level control for 1 VAC, in-

IDC

control for 4 KHz DEV indicated

antennatoprevent the transmitter from keying up

SINAD

Enter

PL/DPL

switch in

IN connectedtotest

and

Duplex Gen switch to On. Set the MONI-

the

proper

offset frequency.

code used in the repeater.

the

Cont

position

Outputtothe receiver

pointatthe repeater level.

and

adjust

Code

Synth Level

antenna

con-

'----'

13.

Adjust

the

PL

deviation control in the repeater controller for 0.75 KHz repeated

display.

14. Set

15. Set

FUNCTION

(0.75

KHz

DISPLAY

repeat level control until the

16. Change

DISPLAYtoGen/Mon

17. Disconnect the cable from the Duplex Gen

18.

Radiate a weak signal from the Duplex Gen

switch to Generate

PLlDPL

+ 4 KHz test tone = 4.75 KHz).

to DVM,

FUNCTION

proper

Mtr.

and

adjust the 1 KHz Level control for 4.75 KHz DEV indicatedonthe display

switchtomonitor,

voltageisindicatedonthe display.

Confirm

Outputtothe receiver

squelch key controlonthe squelch gate moduletothe

and

turn

the repeat leveltominimum. Slowly increase the

that

the repeated modulationis4.75 KHz.

antenna.

The

repeater should un-key.

Outputtosimulate the weakest signal

point

that

the transmitter

just

PL/DPL

that

will be repeated.

keys-up.

code indicatedonthe

Adjust

"-----',

4-26

COMMUNITY REPEATER MODULATION

®

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I

LEVEL

I

COMMUNITY

REPEATER

I

1-

FIGURE 4-15. COMMUNITY REPEATER MODULATION

4-27

_~J

SETUP

1.

Set-up this station in two steps:

2. Connect the Analyzer

3. Set

DISPLAY

switch to

to DVM,

narrow

to

and

squelch controltothreshold.

WIRE LINE REMOTE BASE MODULA

Transmitter

modulation

and

phone

line levels.

the transmitter under test as shown in figure 4-16. FUNCTION

switch to

Monitor,

and

MODULATION

nON

switch to

off.

Set

MONITOR

BW

'--./

4. Set the squelch the display.

Enter

5. 1

KHz

tion limiter.

6. Set

DISPLAYtoOen/Mon

dicated

7. Follow

attenuator

the

proper

to

monitor.

transmitter

-30

dB.

For

Too

highanattenuator

frequency. Move the display

low-power transmitters, it may be necessary to reduce the

settingortoo

cursor

Level control for 1 VAC indicatedonthe display,toput

Mtr. Key the transmitter

on

the display. Un-key the transmitter.

the

base station

phone

level setting outlined in

and

the

next procedure.

tight a squelch setting inhibits the

downtoDVM

1 voltof1

adjust

the transmitter.

KHz

and

test

enter 1 for

tone

into the transmitter modula-

IDC

control for 5

attenuator

modulation

AC

mode.

settingtoun-

deviation

Adjust

KHz

DEV in-

the

~

4-28

WIRE

LINE

REMOTE

BASE MODULATION

@IIIJOTOROLA

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LINE

I

INPUT

I

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-

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- -

--

---

LINE

DRIVER

CIRCUITRY

FIGURE

4-16. MODULATION SETUP; REMOTE BASE

- -

WIRE

-

(

LINE

- - -

~

BASE

I

--

LIM

-

-I

~ANT

I

IDe

I

{

-

- -

I

_I

4-29

WIRE

A.

Phone

Line Levels

1.

Perform the Transmitter Modulation procedure, outlinedinthe previous method, before proceeding with the

LINE

PHONE

REMOTE

LINE

LEVELS

BASE

phone line level adjustments.

2.

Connect the Analyzertothe base station under test as shown in figure 4-17. ConnectRFIn/Out connector and Mod

Out-DVM/Counter

In connector to the station phone line input.

CAUTION

'------/

to the antenna

Disconnect the telephone line from the base station will introduce hum

and

noise that will cause erroneous readings.

and

connect a 600

ohm

load across the input. Failuretodo so

3.Tomeasure levels across a balanced phone line, refer to paragraph D.Togenerate signals across a balanced phone line, refer to paragraph E.

B.

TRANSMIT Line

1.

Set DISPLAY to DVM, FUNCTION switch to Monitor FM, and MODULATION switch to off. Set BW switch to narrow

2.

Set attenuator to squelch the monitor.

Input

and

squelch control to threshold.

-30

dB. For low-power transmitters, it maybenecessary to reduce the attenuator setting to un-

Too

high an attenuator settingortoo tight a squelch setting inhibits the modulation devia-

MONITOR

tion display.

3. Enter the proper transmitter frequency. Move the display cursor down to DVM and enter 1 for

AC

mode.

4. Adjust the 1 KHz Level control for the DBM level expected from the remote control console. The typical value

-16 dBm will be

5.

Remove the cable from the

the line driver

+/-4

dBofmost actual levels.

DVM/Counter

outputtoDVM/Counter

In connector coming from Mod Out. Connect the cable coming from

In.

6. Adjust the exciter level controlonthe station control module for the value stampedonthe exciter, as indicated the display.

7. Set DISPLAYtoOen/Mon

Mtr. Make a line push-to-talk by applying the proper control signal to the input line.

Verify that modulationis5 KHz.

of

'----'"

on

C. RECEIVE Line

1.

Disconnect the cable from the Mod line driver

2.

Set DISPLAY to

3. Adjust the 1 KHz Level control for 5 KHz DEV indicated on the display. Set the attenuator to

Output

output

to the

DVM/Counter

Oen/Mon

Out

and

DVM/Counter

In connectors. Connect the cable from the receiver

In.

Mtr, FUNCTION switch to Generate FM,

and

MODULATION switchtooff.

-30

dB and the

Variable control to mid-range.

4. Set DISPLAYtoDVM. Enter the proper receiver frequency. Move the display cursor down to DVM for

AC

mode.

and

5. Adjust the line level controlonthe line driver module for the desired levelonthe phone line. A typical value for

carrier - type linesis0 dBm.

4-30

enter 1

'-...---'

WIRE LINE REMOTE BASE

PHONE LINE LEVELS

@""OTOROLA

r--

SYSI(lIlUAlfl(ll

,-------

I

C'}---..---l

LINE DRIVER

I

600n.

CIRCUITRY

COlllMlIIlIC,I,lI011S

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RF

CONNr-

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WIRE

LINE

TRANSMITTER

BASE

t

I

FIGURE

4-1'7.

PHONE

4-31

LINE LEVELS SETUP

I I

I

-l

WIRE LINE REMOTE BASE

PHONE

LINE

LEVELS

D. MEASURING LEVELS ACROSS A BALANCED

I. Use a BALUN (balanced-to-unbalanced) device becauseofthe unbalanced natureofthe

(6K

The BALUN must be high impedance

ohmormore) to make bridging measurements without upsetting levels.

LINE

DVM/CounterInjack.

2. Connect the BALUN's balanced side (high impedance) across the phone line. Connect the BALUN's unbalanced side to the

DVM/Counter

3. Set DISPLAY to DVM DBM scale

4.

Set DISPLAY to Scope AC. Analyze waveform

on

the display.

In jack, as shown in figure 4-18. Set the BALUN switch in the

AC

mode. Measure the test tone level on the phone line by interpolating the AC VOLTS-

and

measureACvolts peak-to-peak by interpolating the volts per

OPEN

position.

division.

5.

With the BALUN switch in the balanced side to the unbalanced side.

OPEN

position, the BALUN represents a nominal lOdb insertion loss from the

For

example, an actual line levelofOdbm will indicate -10 dbm at the DVM

input. Characterize your unit before use.

4-32

WIRE LINE REMOTE BASE PHONE LINE LEVELS

"'••U_lo.11011$

SJST£

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BALUN

R.T.L.

25C84202A01

T201

FROM

T1380

LINEDRIYER

I

~

MODULE

FIGURE

4-18.

BALUN

SETUP;

4-33

MEASURING

LEVELS

WIRE LINE REMOTE BASE

PHONE

LINE

LEVELS

E. GENERATING SIGNALS ACROSS A BALANCED LINE

1. Connect the BALUN's balanced side (600 ohm) to the phone line,

equiment (consoles, etc.) connected to the line. Connect the BALUN's unbalanced side

as

shown in figure 4-19. Disconnect any other

to the Mod Out -

CounterInjack.

2.

Set DISPLAY to DVM desired on the line,

3. Set DISPLAY

to

AC

mode and FUNCTION switch to Generate. Adjust the 1KHz Level control to the level

as

interpolated from the

DVM

AC

mode, FUNCTION switch to Generate, and 1KHz Level control to

DBM

scale. A typical value for carrier-type lines

is

0 dBm.

off

position to

generate tone remote control commands.

4.

Set MODULATION switch to Cont Tone Remote. High-level guard tone, function tone, and then the continuous

low-level guard tone will go out. Adjust Code Synth Level control for -30 dBm level phone line,

5.

Switch to Burst position each time that a tone remote control command sequenceisdesired.

6.

Connect the service microphone into the Analyzer's MIC jack. Adjust the Ext. Level control for voice peaks about 6

dB

as

interpolated from the DBM scale. Thisisequivalent to 0 dBm speech test tone level.

higher than the desired test tone level.

7. With the BALUN switch in the CLOSED position, the BALUN represents a nominal unbalanced side to the balanced side. For example, a modulation output

of

Odbm

of

low-level guard tone on the

Odb

insertion loss from the

will be a

Odbm

input into the

ohm line. Characterize your unit before use.

DVMI

600

'---'

'-

4-34

WIRE LINE REMOTE BASE

PHONE

LINE LEVELS

de

1

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FIGURE 4-19. BALUN SETUP; GENERATING SIGNALS

I

I I

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4-35

BANDP

ASS CAVITY

TUNING

Use this procedure to peak-tune bandpass cavities, duplexers, crystal filters and other bandpass devices. Tune the bandpass to center frequency. After tuning, use normal gain or loss measuring techniques to measure insertion loss.

1.

Connect

In/Out

the

Analyzertothe

device

under

test,asshown in figure 4-20. When tuning a single cavity, connect the RF

to the cavity's output connector. When tuning a bandpass duplexer, connect the RF

In/Out

to the duplexer's

antenna port.

2.

Set DISPLAY to Duplex Gen, FUNCTION switch to Generate, and attenuator to -lOdb.

3. Change the FUNCTION switch to Monitor. Enter pass frequency on the display. Set the offset to 0 MHz.

4. Change DISPLAY to Spectrum Analyzer. Set Dispr/Sweep control fully clockwise to

Generator

on.

10

MHz. Turn the Duplex

5. Tune the cavity, or both cavities in the duplexer leg, to a peak indication on the display's center graticule. The single cavity

is

ready for service.

6.

For duplexer tuning, move the output cable from the Duplex Oen Output connector to the duplexer's other end.

Repeat steps 2 through 4.

Put

the duplexer into service. Check the duplexer for insertion loss according to its

specifications.

4-36

"----"

BANDPASS CAVITY & DUPLEXER TUNING

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FIGURE 4-20. BANDPASS CAVITIES SETUP

4-37

A.

Passband

Adjustment

CA

VITY &

BANDPASS

DUPLEXER

ADJUSTMENT

TUNING

I. Connect the Analyzer's

DISPLAYtoGenlMon

2. Set

RF

InlOut

Mtr,

to the in-service duplexer

FUNCTION

switchtoGenerate

tion. Enter

3.

4. Set the

the receiver frequency.

RF

Step

attenuator

to -30 dB

and

the Variable controltomid-range,toallow through a mistuned duplexer and quiet the receiver. Reduce receiver limiter meter reading below saturation.

of

5. Tuqe the pass-band knobs meter. Reduce the signal generator tion. This completes the pass-band

6. Set the necessary squelch setting will inhibit

Enter

7.

FUNCTION

to

reduce the

switchtoMonitor

attenuator

the

the transmitter frequency. Key the transmitter

transmit leg for maximum power

the cavities in

output,

adjustment

settingtounsquelch the monitor.

displayoffrequency

output.

the

duplexer receive leg,

as necessary,tokeep

for

FM

and

the

This completes pass-band adjustments.

~ntenna

FM,

the

signal generator

the

receiver leg.

attenuator

and

to

-30 dB.

deviation information.

tune

the pass-band knobsofthe cavities in the duplexer

port

as shown in figure 4-21.

and

MODULATION

output,

for

a peak readingonthe receiver limiter

switchtooff

adequate

signaltoget

posi-

as necessary,tokeep the

receiver limiter meter reading below satura-

For

low-power transmitters, it may be

Too

highanattenuator

settingortoo

tight a

4-38

'-..-../

CAVITY & DUPLEXER TUNING

BANDPASS WITH REJECT NOTCH

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FIGURE 4-21. DUPLEXER PASSBAND ADJUSTMENT SETUP

4-39

CAVITY & DUPLEXER TUNING

BANDPASS WITH REJECT NOTCH

B.

AdjustmentofReject Notch on Receive Leg

1.

Connect the Analyzer's RF duplexer receiver port that comes from the receiver. Move the Analyzer's RF antenna port to the duplexer receiver port. Connect a power-rated dummy load to the duplexer antenna port.

4.

Set DISPLAYtoSpectrum Analyzer, FUNCTION switch to Monitor, and attenuator

display's center frequency reads the same Key

3.

4. Loosen the cavity reject adjustment nut and slide it within its slot while watching the display. Tighten the adjust-

the transmitter and adjust the reject notch adjustments on the duplexer receive leg cavities for minimum

signal

on

the display. Change the attenuator,asnecessary, to keep the signal on the display.

Be

ment nut. bandpass knob a maximum

careful not to mistune the rejection adjustment. Fine-tune the rejection adjustmentbyturning the

In/Out

+/-15°.

to the in-service duplexerasshown in figure 4-22. Disconnect the cable at the

as

the transmit frequency in step A-7 above.

This completes the duplexer receiver

In/Out

leg

reject notch adjustment.

cable from the duplexer

to

-30

dB. Verify that the

.----../

4-40

CAVITY &

BANDP

ASS

DUPLEXER

WITH

REJECT

TUNING

NOTCH

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FIGURE

4-22.

REJECT

DUPLEXER

NOTCH

ON

ADJUSTMENT

RECEIVE

LEG

[J

SETUP;

4-41

CAVITY &

BANDP

ASS

DUPLEXER

WITH

REJECT

TUNING

NOTCH

C. Adjustment

1.

Connect the Analyzer's RF duplexer transmitter plexer receiver plexer receiver port. Disable the receiver

2. Set DISPLAY to

3.

Set the attenuator to -30 dB and the Variable control to mid-range, to allow adequate signal to get through the

of

Reject NotchonTransmit Leg

In/Out

port

that comes from the transmitter. Move the Analyzer's RF

port

to the duplexer transmission port. Reconnect the cable coming from the receiver to the du-

Gen/Mon

to the in-service duplexer as shown in figure 4-23. Disconnect the cable at the

Mtr, FUNCTION switch to Generate FM.

PL.

In/Out

and

enter the receiver frequency.

cable from the du-

duplexer and quiet the receiver. Reduce the signal generator output, as necessary, to keep the receiver limiter meter below saturation.

4. Adjust the reject notch adjustments on the duplexer transmit leg cavities for minimum signal levelonthe receiver limiter meter. Change the signal generator

output,

as necessary, to keep the received signal up

outofthe noise

below saturation.

5. Loosen the cavity reject adjustment nut and slide it within its slot while watching the meter. Tighten the adjustment nut.Becareful not to mistune the rejection adjustment. Fine-tune the reject notch adjustment by turning the bandpass knob a maximumof+/-15°.

6. Remove the test equipment and connect the duplexer back to the repeater. Check the duplexer for insertion loss according to its specifications.

and

4-42

CAVITY & DUPLEXER TUNING

BANDPASS WITH REJECT NOTCH

@1IIIOTOROLA

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STAGE

FIGURE

4-23.

DUPLEXER

ADJUSTMENT

REJECT NOTCH ON TRANSMIT LEG

4-43

\

REJECT-

SETUP;

DESENSITIZATION TEST

IN-SERVICE

DUPLEXER

Perform this test after retuning a duplexer or after detecting inadequate isolation between transmitter and receiver. The

following conditions may make a duplexer appear mistuned:

• High VSWR antenna 1M

between the repeater's transmitter and an external signal

•

• Faulty cables or connectors

• Improper cable length or configuration

'-......--'

Normally, repairing or replacing cables solves the problem without retuning. Check the duplexer manufacturer's

data

sheets to determine proper installation.

1.

Connect the Analyzer to the repeater/duplexer under test,asshown in figure 4-24. Connect the RF

an

duplexer's antenna port through

To

prevent RF overload into the generate, provide sufficient isolation between the tap-off and the straight-through

feed. For example a 1000 W transmitter requires

2. Connect the DVM input to the receiver speaker connection. Disconnect the cable from the RF

RF tap-off isolating device.

CAUTION

50

dB isolation.

In/Out

In/Outtothe

to prevent the

transmitter from keying up on repeat.

3. Set DISPLAY to

4.

Set the attenuator to

5.

Adjust the I KHz Level control for 3.0 KHz

6.

Reconnect the cable from RF

Oen/Mon

necessary to provide 0.75 KHz

Mtr, FUNCTION to Generate FM, and enter the receiver frequency.

-60

dB and the Variable control to mid-range.

In/Out

PL/DPL

DEVon

to the RF tap-off and enable the transmitter to key-up.

deviation for a

the screen.

PL/DPL

accessed repeater.

For

example, it may be

7. With this generated signal introduced to the RF tap-off, adjust the signal generator level Step attenuator and the Variable control to the

8.

Disable the transmitter from key-up. Readjust the signal generator to obtain12dB SINAD again. Note the generator

12

dB SINAD levelasindicated on the display. Note the generator RF LEVEL.

RF LEVEL.

9.

The difference between the RF LEVEL for12dB

is

(step 7),

10.

More than 2dBdesensitization may indicate:

the amountofsystem desensitization.

• defective antenna system

• loose shields

• transmitter spurs

• improper or defective duplexer cable.

Check them all, before attempting to retune the duplexer.

SINAD with the transmitter

4-44

off

(step8)and with the transmitter on

DESENSITIZATION

IN-SERVICE

DUPLEXER

TEST

®

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RX

FIGURE

4-24. DESENSITIZA

4-45

TlON

TEST

SETUP

FERRITE ISOLA

1.

Use the Analyzer to test isolators for insertion loss and isolation. Connect the Analyzer to the isolator under test, as

TOR

TEST

shown in figure 4-25.

2.

Set DISPLAY to Duplex Oen and FUNCTION switch to Monitor FM. Enter the transmitter frequency andanoffset

of

0 MHz.

3.

Use an RF adapter (bullet) to temporarily connect together the cables to the isolator. Turn on the Duplex Oen switch.

Set DISPLAY to

Gen/Mon

Mtr and attenuator to 0 dB.

'-----'

4. Note the

RF

LEVEL input value in dB, on the display. Use this value as the reference level to determine insertion loss

and isolation values.

5. Reconnect the cables to the isolator; Duplex Gen to isolator input and RF

6.

Note the RF LEVEL input value in dB, on the display. Subtract this value from the value found in step 4, to obtain

In/Out

to isolator output.

the insertion loss in dB.

7.

Reverse the connections to the isolator and again note the RF LEVEL input value in dB. Subtract this value from the value found in step 4, to obtain the isolation value in dB for the isolator under test.

8. Test dual isolators (connected in series) by the same procedure.

4-46

@MOTOROLA

n

••

U_IUTK»lS

S1'1U.AUIYlUl

FERRITE ISOLATOR TEST

POWER

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(BULLET)

FIGURE 4-25. FERRITE ISOLATOR TEST SETUP

4-47

8v-v

MOTOROLA, INC. COMMUNICATIONS SECTOR

TEST

EQUIPMENT

1308 PLUM GROVE ROAD SCHAUMBURG,

SERVICE

ILUNOIS

60173

TEST EQUIPMENT SERVICE REQUEST FORM

This

for

DEPOT

completed

service.

form

must

accompany

TEST

equipment

MOTOROLA, INC.

COMMUNICATIONS SECTOR

EQUIPMENT

2333B.UTAH AVENUE EL SEGUNDO. CA

returned

SERVICE

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DESCRIPTION

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ORDER

I

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I

SERIAL

NUMBER

DATE

I

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INTERNAL

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MOTOROLA

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_

Motorola R-2001D Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual