Tektronix AA 501 Manual de usuario

Tektronix, Inc.

P.O. Box

500

Beaverton, Oregon

97077

070-2958-00

Product Group 75

COMMITTED

EXCELLENCE

PLEASE CHECK FOR CHANGE INFORMATION

AT THE REAR OF THIS MANUAL.

INSTRUCTICIN

MANUAL

Serial

Number

First Printing AUG 1980

Revised

NOV

1981

Scans

ARTEK

MEDIA

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1980

Contents of this publication may not bereproduced inany

form without the written permission of Tektronix, Inc.

Productsof Tektronix. Inc.and

itssubsidiariesarecovered

by U.S.and foreign patents and/or pending patents.

TEKTRONIX. TEK. SCOPE-MOBILE, and

are reg-

istered trademarks of Tektronix. Inc.

PrintedinU.S.A.Specificationand pricechangeprivileges

are reserved.

1980

durch Tektronix, Inc. Alle Rechtevorbe-

halten. Der lnnalt dieser Publikation darf ohne Genehmlgung

von Tektronix, Inc. nicht weitergegeben werden.

Produkte von Tektronix, Inc.undseinen Tochtergesellschaften

sind durch US- und Auslandspatente undloder schwebende

Patente abgedeckt.

TEKTRONIX, TEK. SCOPE-MOBILE und

sind geschlltzte

Warenzeichen von Tektronix, Inc.

Gedruckt in U.S.A. Spezifikations- und PreisBnderungen

bleiben vorbehalten.

1980

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x+I,,

T~W,

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Tous les produits TEKTRONlX sont brevetes

et Etranger et

TEKTRONIX, TEK, SCOPE-MOBILE.

les logotypes TEKTRONIX, TEK SCOPE MOBILE.

dews&.

R12-79

~=9i+iaffti%~~f.

lmprimb aux USA. TEKTRONIXse reserve le droit de modif~er

~p~lj,

f*+$~

~rdfita,~

(

~~76

caracteristiques et prlx dans le cadre de developpements techno-

logiques.

eh.8,

Scans

ARTEK

MEDLA

TABLE OF CONTENTS

LlST OF ILLUSTRATIONS

Page

LIST OF TABLES v

OPERATOR'S SAFETY SUMMARY vi

SERVICE SAFETY SUMMARY vii

Section

SPECIFICATION

Instrument Description

..........

1-1

.........

Performance Conditions 1-1

Electrical Characteristics

.........

1-2

..........

EnvironmentalCharacteristics 1-7

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

Physical Characteristics 1-8

English Version

Section

OPERATING INSTRUCTIONS

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

Preparation for Use 2-1

........

Repackaging Information 2-1

Controls. Connectors. and Indicators 2-2

.........

Instrument Connections

2-4

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

Level Measurements

2-5

........

Distortion Measurements

2-6

Distortion Measurement Procedure

2-7

IM Distortion Measurements

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

(Option01)

2-9

IM DistortionMeasurement Procedure

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

(Option01) 2-11

Filters

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

2-11

Displays

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

2-12

Monitoring

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

2-13

Page

French Version

CHAPITRE

INSTRUCTIONSD'UTILISATION

Instructionsde reemballage pour

expedition

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

2-1

Cornmandes. connecteurs

temoins

lumineux

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

2-2

Connexions de I'appareil

........

2-4

Mesures de distorsion

..........

2-6

MBthode de rnesure de distorsion

2-8

Mesures de distorsion d'intermodula-

tion (option

01)

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

2-9

MBthode de rnesure de la distorsion

par interrnodulation (option

01)

2-1

Filtres

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

2-11

Affichages

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

2-13

ContrBle

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

2-13

German Version

...........

Kapitel2 BEDIENUNGSANLEITUNG 2.1

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

lnbetriebnahme 2-1

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

Verpackung des Gerates

2-1

Bedienungselernente. Anschliisse

undAnzeigen

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

2-2

Anschlusse an das Instrument

.......

2-4

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

Pegelmessungen

2-5

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

Verzerrungsmessungen

2-6

Durchfuhrung der

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

Verzerrungsmessung 2-7

lnterrnodulationsverzerrungs-

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

Messung (Option 01) 2-9

Messung von Interrnodulations-

........

verzerrungen (Durchfijhrung) 2-11

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

Filter 2-11

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

Darstellungen 2-12

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

~berwachung 2-13

REV

NOV

1981

Scans

ARTEK

MEDLQ

TABLE

CONTENTS

(cont)

Japanese Version Page

THE FOLLOWING SERVICING INSTRUCTIONS ARE

FOR USE BY QUALIFIED PERSONNEL ONLY

TOAVOID

PERSONAL INJURY.

NOT PERFORM ANY SER-

VICING OTHER THAN THAT CONTAINED IN

OPERATING INSTRUCTIONS UNLESS YOU ARE

QUALIFIED TO DO SO

Section

THEORY OF OPERATION

Introduction

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

3-1

Input Amplifier

......

3-1

Automatic Gain Control

....

3-2

Notch Filter

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

3-2

Frequency Band Discriminator

Notch Filter Control

...

Distortion Amplifier

Filters and AC-DC Converters

Converter

........

......

dB Offset Generator

dB Ratio Circuitry

........

Reference

...........

Dvm

...

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

Display Board

Logic Circuitry

Power Supplies

.........

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

Supply

option

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

Page

Section

CALIBRATION

Performance Check Procedure

....

4-1

Introduction

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

4-1

Test Equipment Required

......

4-1

List of Check and Adjustment Steps 4-3

Performance Check Summary

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

Sheet 4-4

Internal Adjustment Procedure

....

4-18

Introduction

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

4-18

Services Available

...........

4-18

Test Equipment Required

......

4-18

Adjustment Access

...........

4-18

Section

MAINTENANCE

General Maintenance Information

. .

Static-Sensitive Components

....

Cleaning

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

Obtaining Replacement Parts

...

Soldering Techniques

.........

Semiconductors

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

Interconnecting Pins

..........

Coaxial Cables

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

Square Pin Assemblies

........

Multipin Connectors

..........

Circuit Board Removal

........

Front Panel Latch Removal

.....

Magnetic Shield

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

Jumper Selection for CCIF. AUTO.

or SMPTWDIN Measurements

...

30 kHz Filter Modification

......

Rear Interface Information

.......

Functions Available at Rear

Connector

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

Section

OPTIONS

Section

REPLACEABLE ELECTRICAL PARTS

REV

JUL

1981

Scam

ARTEK

MEm

TABLE

OF CONTENTS

(cont)

Section

DIAGRAMS AND CIRCUIT BOARD

ILLUSTRATIONS

Adjustment Locations

Component Reference Charts

Schematic Diagrams

Section

REPLACEABLE MECHANICAL

PARTS

Fig.

Exploded View

Accessories

CHANGE INFORMATION

iii

Fig.

No.

LIST

ILLUSTRATIONS

...........

501 Distortion Analyzer

2-1 Installation and removal

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

....

2-2 Front panel controls and connectors

2-3 Typical connections for distortion

measurements. See text

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

2-4 Blockdiagramof abasic harmonicdistortion

analyzer

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

2-5 Transfer characteristics of an audio device

.....

2-6 THD test of transfer characteristics

....

2-7 Block diagram of a basic IM analyzer

2-8 IMtest of transfer characteristics intimeand

frequency domain.

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

......

2-9 Responsecurves for AA 501 filters

2- 10 Oscilloscope display of deviation from

linearity

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

3-1 Simplified notch filter and control loop

3-2 Typical frequency discriminator waveforms

at about 800 Hz

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

3-3 lntermodulation distortion option block

diagram

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

4-1 Check step 1. Input impedance

........

4-2 Check step

Common mode rejection

. .

4-3 Check step

Level function accuracy

...

4-4 Check step 4. Bandwidth

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

4-5 Check step

Residual noise

..........

4-6 Check steps6,9,10,11 andadjustment steps

10, and 11. Total harmonic, SMPTE and

CClF distortion and CClF residual IM

distortion

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

4-7 Check step

Residual THD

........

Page Fig.

4-8 Check step

and adjustment step

SMPTE

......

2- 1 residual intermodulation distortion

2-3 4-9 Check step 11A and adjustment step 11A.

Alternate CClF IMdistortion accuracy

...

.........

2-5 4-10 Check step 12. Filter accuracy

.........

4-11 Check step 13. lnput monitor.

........

2-7 4-12 Check step 14. Function output

.........

2-7 4-13 Check step 15. Auxiliary input

2-8 4-14 Adjustment test setup for steps 1 and 2

2-9 4-15 Adjustment test setupfor steps3, 4.5,6. and

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

..........

2-10 5-1 Typical square pin assembly

Orientation and disassembly of multipin

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

connectors

.....

Side cover removal or replacement

Top and rear panel removal

...........

Screwsattachingtheboardassembliestothe

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

plug-in frame

Rear interface connector assignments

...

Adjustment location illustration for Main,

lnput and Notch dvm boards.

Adjustment location illustration for Control

and IMDOption boards.

lnput board (A14) parts location grid.

Main board (A15) parts location grid.

Logic board (A12) parts locationgrid.

Dvm board (A11) parts location grid.

Display board (A10) parts location grid.

IMD option board (A13) parts location grid.

Page

Scam

ARTEK

MEN

LIST

TABLES

Table

No.

Page Table

N 0.

Electrical Characteristics

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

1-2

Environmental Characteristics

.........

1-6

Physical Characteristics

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

1-7

Gains from INPUT terminals to FUNCTION

OUTPUT connector for various settings of

the INPUT LEVEL RANGE control

......

2-13

........

Truth Table for U1400Outputs 3-4

InternalConnections in

U1000Dependingon

Logic States of pins 10 and 11

.........

3-4

.....

GainandSwitchingthroughU1210

3-4

Suggested Test Equipment

..........

4-1

Common Mode Rejection Check

.......

4-6

Level Function Accuracy

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

4-6

Relative Susceptibility to Static Discharge

Damage..

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

5-1

NOTE

The following lables are located in the diagrams

foldout section at the rear of this manual.

8-1 lnput Board (A14) Component Reference

Chart.

8-2 lnput Board (A14) Component Reference

Chart.

8-3 Main Board (A15) Component Reference

Chart.

8-4 lnput Board (A14) Component Reference

Chart.

8-5 lnput Board (A14) Component Reference

Chart.

8-6 Main Board (A15) Component Reference

Chart.

8-7 Logic Board (A12) Component Reference

Chart.

8-8 Dvm Board (All)Component Reference

Chart.

8-9 Display Board (A10) Component Reference

Chart.

8-10 Logic Board (A12) Component Reference

Chart.

lnput Board (A14) Component Reference

Chart.

Main Board (A15) Component Reference

Chart.

8-11 Logic Board (A12) Component Reference

Chart.

8-12 Logic Board (A12) Component Reference

Chart.

8-13 Main Board (A15) Component Reference

Chart.

8-14 IMD Option Board (A13) Component

Reference Chart.

Page

OPERATORS SAFETY SUMMARY

The general safetyinformation inthis partofthesummary

Power Source

is for both operating and servicing personnel. Specific

warnings

and

cautions

will

found

throughout

the

This product is intendedto operate fromapower module

manual where they apply, but may not appear

this connectedtoa Power source that will not apply morethan

s~lmmarv.

250

volts rms betweenthe supply conductors or between

..-.

either supply conductor and ground. A protective ground

connection by way of the grounding conductor in the

power cord is essential for safe operation.

TERMS

InThis Manual

Groundingthe Product

This productisgrounded throughthegrounding conduc-

tor of the power module power cord. To avoid electrical

CAUTIONStatements identify

conditionsorpracticesthat Shock, plug the Power cord into a properly wired recep-

couldresultindamagetotheequipment or other property,

tacle

before

'Onnecting

the

product input

Output

terminals. A protective ground connection by way of the

WARNING identify conditions

practices grounding conductor inthe power module power cord is

that could result in personal injury or loss of life. essential for safe operation.

As Marked on Equipment Danger Arising From Loss of Ground

CAUTION indicates a personal injury hazard not im-

mediately accessible as one reads the marking, or a Upon loss of the protective-ground ~~nnection,all

hazard to property including the equipment itself. accessible conductive parts (including knobs and con-

trols that may appear to be insulating) can render an

DANGER indicates a personal injury hazardimmediately

electric

accessible as one reads the marking.

Use the Proper Fuse

To avoid fire hazard, use only the fuse of correct type,

voltage rating and current ratingas specified inthe parts

list for your product.

SYMBOLS

InThis Manual

Refer fuse replacement to qualified service personnel.

This symbol indicates where applicable

NO^

Operate in Explosive Atmospheres

cautionary or other information is to be

found.

As Marked on Equipment

DANGER

High voltage.

To avoid explosion, do not operate this product in an

explosive atmosphere unless it has been specifically

certified for such operation.

Do Not Operate Without Covers

Protective ground (earth) terminal. To avoid personal injury, do not operate this product

without covers or panels installed. Do not apply powerto

ATTENTION

refer to manual. the plug-in via a plug-in.extender.

Scans

ARTEK

MEDLQ

SERVICE SAFETY SUMMARY

FOR QUALIFIED SERVICE PERSONNEL ONLY

Refer also to the preceding Operators Safety Summary.

Do Not Service Alone

Disconnect power before removing protective panels,

soldering, or replacing components.

Do not perform internal service or adjustment of this

product unless another person capable of rendering first

aid and resuscitation is present.

Power Source

This product is intended to operate in a power module

Use Care When Servicing With Power On

connectedtoa power sourcethat will not applymorethan

250

volts rms betweenthe supply conductors or between

Dangerous voltages may exist at several points in this either supply conductor and ground.

protectiveground

product. To avoid personal injury, do not touch exposed connection by way of the grounding conductor in the

connections and components while power is on. power cord is essential for safe operation.

vii

Scans

TEK

MEDL4

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