Tektronix AA 501 Instruction Manual

COMMITTED

TO

EXCELLENCE

Tektronix, Inc. P.O. Box Beaverton, Oregon

070-2958-00 Product Group 75

500

97077

PLEASE CHECK FOR CHANGE INFORMATION AT THE REAR OF

INSTRUCTICIN

THIS MANUAL.

MANUAL

Serial

Number

First Printing AUG 1980 Revised

NOV

1981

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Copyright @ 1980 Contents of this publication may not be reproduced in any form without the written permission of Tektronix, Inc.

Products of Tektronix. Inc. and by U.S. and foreign patents and/or pending patents.

TEKTRONIX. TEK. SCOPE-MOBILE, and istered trademarks of Tektronix. Inc.

Printed in U.S.A. Specification and price change privileges are reserved.

itssubsidiariesarecovered

@

are reg-

O

1980

Copyright halten. Der lnnalt dieser Publikation darf ohne Genehmlgung von Tektronix, Inc. nicht weitergegeben werden.

Produkte von Tektronix, Inc. und seinen Tochtergesellschaften sind durch US- und Auslandspatente Patente abgedeckt.

TEKTRONIX, TEK. SCOPE-MOBILE und Warenzeichen von Tektronix, Inc.

Gedruckt in U.S.A. Spezifikations- und bleiben vorbehalten.

durch Tektronix, Inc. Alle Rechte vorbe-

undloder schwebende

@

sind geschlltzte

PreisBnderungen

Copyright Le contenu de ce manuel ne peut etre reproduit sous quelque tor-

me

Tous les produits TEKTRONlX sont brevetes les logotypes TEKTRONI X, TEK SCOPE MOBILE. dews&.

lmprimb aux USA. TEKTRONIX se reserve le droit de modif~er caracteristiques et prlx dans le cadre de developpements technologiques.

O

1980

que ce soit sans I'accord de Tektron~x Inc.

US

et Etranger et

'@

01980

R12-79

:

$Kkt8ifi?7-7-

TEKTRONIX, TEK, SCOPE-MOBILE.

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Scans

by

ARTEK

MEDLA

=>

TABLE OF CONTENTS

Page

LlST OF ILLUSTRATIONS

LIST OF TABLES v

OPERATOR'S SAFETY SUMMARY vi

SERVICE SAFETY SUMMARY vii

Section

I

SPECIFICATION Instrument Description

Performance Conditions 1-1 Electrical Characteristics

Environmental Characteristics 1-7 Physical Characteristics 1-8

English Version

2

OPERATING INSTRUCTIONS Preparation for Use 2-1

Repackaging Information 2-1 Controls. Connectors. and Indicators 2-2 Instrument Connections Level Measurements Distortion Measurements Distortion Measurement Procedure IM Distortion Measurements

(Option 01) IM Distortion Measurement Procedure

(Option 01) 2-1 1 Filters Displays

Monitoring

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

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

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

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

..........

.........

..........

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

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

........

.........

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

........

.

1-1

1-2

2-4

2-5

2-6

2-7

2-9

2-11 2-12 2-13

Page

i

v

CHAPITRE 2 INSTRUCTIONS D'UTILISATION

Kapitel2 BEDIENUNGSANLEITUNG 2.1

French Version

Instructions de reemballage pour

expedition

Cornmandes. connecteurs

lumineux Connexions de I'appareil Mesures de distorsion MBthode de rnesure de distorsion

Mesures de distorsion d'intermodula-

tion (option

MBthode de rnesure de la distorsion

par interrnodulation (option Filtres

Affichages ContrBle

German Version

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

et

temoins

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

........

..........

01)

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

01)

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

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

2-1 2-2

2-4

2-6

.

2-8

2-9

.

2-1

2-11

2-13

...........

lnbetriebnahme 2-1

Verpackung des Gerates Bedienungselernente. Anschliisse und Anzeigen

Anschlusse an das Instrument

Pegelmessungen Verzerrungsmessungen Durchfuhrung der Verzerrungsmessung 2-7

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

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

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

.......

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

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

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

2-1

2-2

2-4

2-5

2-6

1

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

by

ARTEK

MEDLQ

=>

TABLE

Japanese Version Page

OF

CONTENTS

Section

4

CALIBRATION

(cont)

Page

THE FOLLOWING SERVICING INSTRUCTIONS ARE

.

FOR USE BY QUALIFIED PERSONNEL ONLY

PERSONAL INJURY.

VICING OTHER THAN THAT CONTAINED IN OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO

Section 3 THEORY OF OPERATION

Introduction Input Amplifier Automatic Gain Control Notch Filter Frequency Band Discriminator Notch Filter Control Distortion Amplifier Filters and AC-DC Converters

dB

Converter dB Offset Generator dB Ratio Circuitry

6

V

Reference

Dvm Display Board Logic Circuitry Power Supplies

..

15 V Supply

IM

option

@

DO

NOT PERFORM ANY SER-

.

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

0

a

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

v

$$

6

@

...........

...

@

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

.........

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

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

TOAVOID

......

....

:

...

@

........

......

........

:

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

Performance Check Procedure

Introduction Test Equipment Required List of Check and Adjustment Steps Performance Check Summary

Sheet 4-4

Internal Adjustment Procedure

Introduction

Services Available Test Equipment Required Adjustment Access

Section 5 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

30 kHz Filter Modification

Rear Interface Information

Functions Available at Rear Connector

Section 6 OPTIONS

7

Section

REPLACEABLE ELECTRICAL PARTS

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

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

SMPTWDIN Measurements

....

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

......

....

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

...........

......

...........

. .

....

...

.........

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

..........

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

........

..........

........

.....

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

...

......

.......

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

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

4-18 4-18

4-18 4-18 4-18

Scam

by

ARTEK

MEm

+

REV

JUL

1981

TABLE

OF CONTENTS

(cont)

Section 8 DIAGRAMS AND CIRCUIT BOARD

ILLUSTRATIONS

Adjustment Locations Component Reference Charts

Schematic Diagrams

Section 9 REPLACEABLE MECHANICAL

PARTS

Fig. 1 Exploded View Accessories

CHANGE INFORMATION

iii

LIST

OF

ILLUSTRATIONS

Fig.

No.

AA

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 Block diagram of a basic harmonicdistortion

analyzer

2-5 Transfer characteristics of an audio device

THD test of transfer characteristics

2-6 2-7 Block diagram of a basic IM analyzer

IM test of transfer characteristics in time and

2-8

frequency domain. Response curves for AA 501 filters

2-9 2- 10 Oscilloscope display of deviation from

linearity Simplified notch filter and control loop

3-1 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 4-3 Check step

4-4 Check step 4. Bandwidth 4-5 Check step 4-6 Check steps 6,9,10,11 and adjustment steps

9,

CClF distortion and CClF residual distortion

Check step

4-7

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

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

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

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

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

2.

Common mode rejection

3.

Level function accuracy

5.

Residual noise

10, and 11. Total harmonic, SMPTE and

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

7.

Residual THD

...........

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

....

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

.....

....

......

.

........

. .

...

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

..........

IM

tN

........

Page Fig.

N

0.

i

x 2- 1 residual intermodulation distortion 2-3 4-9 Check step

2-5

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 setup for steps 3, 4.5,6. and

2-10 5-1 Typical square pin assembly

Check step

4-8

Alternate CClF IM distortion accuracy 4-10 Check step 12. Filter accuracy 4-11 Check step 13. lnput monitor.

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

7

Orientation and disassembly of multipin

connectors

Side cover removal or replacement

Top and rear panel removal

Screws attaching the board assemblies tothe

plug-in frame

Rear interface connector assignments

Adjustment location illustration for Main, lnput and Notch dvm boards.

Adjustment location illustration for Control and IMD Option boards.

lnput board Main board Logic board Dvm board Display board

IMD option board

8

and adjustment step

8.

SMPTE

......

11A and adjustment step 11A.

.........

........

.........

..........

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

.....

...........

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

(A14) parts location grid.

(A15) parts location grid.

(A12) parts location grid.

(A1 1) parts location grid.

(A10) parts location grid.

(A13) parts location grid.

...

.

...

Page

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ARTEK

MEN

=r

LIST

OF

TABLES

Table

No.

Electrical Characteristics Environmental Characteristics Physical Characteristics

Gains from INPUT terminals to FUNCTION OUTPUT connector for various settings of the INPUT LEVEL RANGE control

Truth Table for U1400 Outputs 3-4 Internal Connections in

Logic States of pins 10 and 11

GainandSwitchingthroughU1210

Suggested Test Equipment Common Mode Rejection Check Level Function Accuracy Relative Susceptibility to Static Discharge

Damage..

The following lables are located in the diagrams

foldout section at the rear of this manual.

lnput Board (A14) Component Reference

8-1

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.

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

NOTE

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

.........

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

......

........

U1000 Depending on

.........

.....

..........

.......

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

Page Table

N 0.

1-2 1-6 1-7

2-13

3-4 3-4 4-1 4-6 4-6

5-1

8-5

8-6 Main Board

8-7

8-8 Dvm Board (All) Component Reference

8-9 Display Board

8-10 Logic Board

8-11 Logic Board

8-12 Logic Board

8-13 Main Board (A1 5) Component Reference

8-14 IMD Option Board

lnput Board Chart.

Chart. Logic Board

Chart.

Chart. lnput Board

Chart. Main Board

Chart.

Reference Chart.

(A14) Component Reference

(A15) Component Reference

(A12) Component Reference

(A14) Component Reference

(A15) Component Reference

(A12) Component Reference

Page

(A10) Component Reference

(A13) Component

OPERATORS SAFETY SUMMARY

The general safety information in this part of thesummary is for both operating and servicing personnel. Specific

warnings

manual where

s~lmmarv.

-

.

. . .

. . -.

,

and

cautions

they apply, but may not appear

.

will

be

found

throughout

in

the

this

TERMS

In This Manual

CAUTION Statements identify

could result in damagetotheequipment or other property, WARNING

that could result in personal injury or loss of life.

As Marked on Equipment

CAUTION indicates a personal injury hazard not immediately hazard to property including the equipment itself.

DANGER indicates a personal injury hazard immediately accessible as one reads the marking.

accessible as one reads the marking, or a

conditionsor practicesthat

identify conditions

or

practices

Power Source

This product is intended to operate from a power module connected to a Power source that will not apply morethan

250

volts rms between the 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.

Grounding the Product

This product is grounded through the grounding conduc-

tor of the power module power cord. To avoid electrical

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

tacle

before

terminals. A protective ground connection by way of the

grounding conductor in the power module power cord is essential for safe operation.

'Onnecting

the

product input

Or

Output

Danger Arising From Loss of Ground

Upon loss of the protective-ground ~~nnection, all accessible conductive parts (including knobs and controls that may appear to be insulating) can render an

electric

SYMBOLS

In This Manual

symbol indicates where applicable

This cautionary or other information is to be

found.

As Marked on Equipment

9

DANGER - High voltage.

@

Protective ground (earth) terminal.

ATTENTION

-

refer to manual.

Use the Proper Fuse

To avoid fire hazard, use only the fuse of correct type, voltage rating and current rating as specified in the parts list for your product.

Refer fuse replacement to qualified service personnel.

DO

NO^

Operate in Explosive Atmospheres

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

To avoid personal injury, do not operate this product without covers or panels installed. Do not apply power to

the plug-in via a

plug-in.extender.

Scans

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ARTEK

MEDLQ

=>

SERVICE SAFETY SUMMARY

FOR QUALIFIED SERVICE PERSONNEL ONLY

Refer also to the preceding Operators Safety Summary.

Do Not Service Alone

Do not perform internal service or adjustment of this product unless another person capable of rendering first aid and resuscitation is present.

Use Care When Servicing With Power On

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

Disconnect power before removing protective panels,

soldering, or replacing components.

Power Source

This product is intended to operate in a power module

connected to a power source that will not apply more than

250

volts rms between the supply conductors or between

A

protective ground

Scans

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AR

TEK

MEDL4

vii

=>

~lrkvpr

MAX

+

AA501

Distortion

Analyzer

r

-RMs

L

AVC

1

rn

"1

f:~~R

r

viii

Scans

by

ARTEK

MEDIA

=>

SPECIFICATION

Instrument Description

The AA 501 is a fully automatic distortion analyzer, packaged as a two-wide distortion is measured with the standard instrument. Option 01 instruments also measure distortion and tion. Option 02 instruments permit noise measurements in

45405.

Distortion set level, frequency tuning and nulling are fully automatic, requiring no operator adjustment. Input level range and distortion measurement range selections are fully automatic or may be manually selected. Distortion readout is provided in percent or dB.

The audio frequency voltmeter. Readings may be in volts, dBm, or dB relative to any arbitrary reference.

Filters are included which allow measurement of noise to

IHF and FCC specifications. Option 02 instruments provide a quasi-peak detector for noise measurements in accordance with provided as are provisions for external filters.

All readings are displayed on a uncalibrated analog readout is also provided to aid in nulling and peaking applications.

Ac to dc conversion is either average or true rms re-

sponding, allowing conformance with most standards.

CClF two-tone difference frequency distor-

with

CC'R

AA

501 is also a high sensitivity, autoranging,

CClR or DIN standards. A hum rejection filter is

TM

500 plug-in. Total harmonic SMPTEIDIN intermodulation

468-2

3

112 digit readout. An

Or

Op-

tion 02 instruments provide quasi-peak or true rms detection. This feature

obtained

the

on

other

Ac input and output connections are available on both

front

respondingtothedisplayed

therearinterface. with other instruments such as filters, chart recorders, spectrum analyzers, oscilloscopes, etc.

'permits comparison with readings

instruments.

and

the

rear

interface.

reading,

Thisallowsflexibilityininterconnection

Dc

signals,

areavailablethrough

tor-

Performance Conditions

The electrical characteristics in this specification are

AA

valid only if the temperature between must be in a noncondensing environment described under the minutes warm-up time for operation to specified ac-

curacy; sixty minutes after exposure to or storagein a high

humidity (condensing) environment. Any conditions that are unique to stated as part of that characteristic.

The electrical and environmental performance limits,

together with their related validation procedures, com-

prise a complete statement of the electrical and en-

vironmental performance of a calibrated instrument.

Items listed in the Performance Requirements column of the Electrical Characteristics are verified by completing the Performance Check in the Calibration section of this manual. ltems listed in the Supplemental Information column are not verified in this manual.

501 has been adjusted at an ambient

+20° C and +30° C. The instrument

whoselimits are

environmental part. Allow twenty

a

particular characteristic are expressly

REV

NOV

1981

SCMS

by

ARTEK

MEDLQ

=>

-

--

-

--

-

--

-

Characteristics

.-

-

- - -- - -

INPUT (all functions)

Impedance

----

-

.

-

Maximum Input voltage

-

Common mode rejection (inputs shorted)

-

--

- -

LEVEL FUNCTION

Table

1-1

7-

--

-.

-

--

Performance Requirements

.

--

ELECTRICAL CHARACTERISTICS

-

--

-

r

Supplemental Information

-

--

-

-.

,

100

kR,

+

2%, each side to ground

200

pV to 200 V in 10 steps (2-6 se-

quence from 200

-

--

-

--

250 dB at 50 or 60

mV to 200 V)

~

---

~-

--

Hz

--

for common mode signals up to one-half of selected input range or 50

mV, whichever is

greater.

Full differential. Each side ac coupled

through

1

pF

and shunted to ground by

100 pF. Dual banana jack connectors at

0.750 inch spacing with ground connector additionally provided.

--

-

-.

-

Range selection is manual or automatic. Auto-ranging time is typically

(1

second.

Separate increase range and decrease range indicators illuminate whenever input level does not fall within optimum window for selected range. For specified instrument performance both indicators must be extinguished.

-

- - --

. . -.

300 V peak, 200 V rms either input to

ground or differentially. Will recover without damage from continuous overloads of

120

V

rms or 200 V rms for 30 minutes on all ranges. For linear response peak input voltage must not exceed 3 times INPUT

LEVEL RANGE setting.

~~

~

Typically 240 dB to 300

kHz.

=

Modes

-

--

Accuracy (V,, a 100 pV with level ranging indicators extinguished)

20

Hz

-

to 20

kHz

-

---

Volts

Within

+

2%

I

1

(

Volts, dBm (600

0).

or dB ratio with push to set 0 dB reference. lnput range determines display range. Single effective range in dB modes with 0.1 dB resolution. Stored subsequent changes in mode or function.

-

0 dB reference is unaffected by

-.

On the 200 pV range accurcy above

50

kHz

is +4%, -6% (+0.5 dB,

-0.7 dB). Accuracy with quasi-peak re-

sponse (Option 02 only) is valid from

20

Hz

to 50

kHz

only).

REV

NOV

1981

1-1

Table

-

(cont)

Performance Requirements

- - -

--

- - -

-

At least 300 kHz with no filters selected.

-

--

Supplemental Information

--

Residual noise

(Source resistance

-

G

1 kS1)

TOTAL HARMONIC DISTORTION

PLUS NOISE FUNCTION

Fundamental frequency range

Minimum input level

Distortion ranges

--

Accuracy (THD ~30% and readings 34% of selected distortion range)

~3.0 rV

(-

108 dBm) with 80 kHz,

400 Hz filters and rms response

~1.5pV (-114dBm) with A

weighting filter and rms response

(standard and Option 01 instruments only)

~5.0 wV

(-

104 dBm) with CClR weighting filter and quasi-peak response (Option 02 only)

-

--

- - -

-.

10 Hz to 100 kHz

Fully automatic tuning and nulling. For proper tuning

THD+ N <1O0/0. After initial tunlng THD+ N can degrade to 30% without loss of lock for

nulling

time is less than 5 s above 20 Hz.

-

SINAD testing. Typical

--

-

Autorange, 20°/0, 2%, 0.2%, and dB. dB is internally autoranging with single effective display range. Autorange allows measurements above 20%.

+

Accuracy is limited by residual THD

N and filter selection. Not applicable with quasi-peak response (Option

02 only).

20 Hz to 20 kHz

10 Hz to 100 kHz

-

---

Residual

THD+N (V,,, a250 mV,

source resistance G 1 kS1)

20 Hz to 20 kHz with 80 kHz noise limiting filter

<+40°C

and T

10Hz to50kHz

50 kHz to 100 kHz

Typical fundamental rejection

REV

NOV

1981

Within

--

for harmonics

- - -

<

100 kHz.

+

10%

(k

1 dB) for harmonics

+lO%, -30%

~300 kHz.

- - -

(+ 1 dB,

--

-3

dB)

-

-.

-

- - -

SG

Measured with

505 oscillator. All dis:ortion, noise, and nulling error sources :ombined.

~0.0025~/0 (-92 dB) average

response

~0.0032% (-90 dB) rms response =z0.0071 =zO.OIOO/~

O/O

(-83 dB), rms response

(-

80 dB), rms response

it

least 10 dB below specified residual

rHD

+

N

or the actual signal THD, which-

!ver is greater.

~cMs

by

ARTEK

MEDL4

=,

--

.-

Characteristics

- - -

-

-.

-

INTERMODULATION DISTORTION FUNCTION

Table

1-1

(cont)

-

Performance Requirements

-

---

-

--

-

--

-

--

-

Supplemental lnformatlon

-

--

Operation

SMPTE and DIN tests

Lower frequency range Upper frequency range Level ratio range

Residual IMD

(V, 2250 mV,

source resistance 61 kil,

~40°C)

.-

~

CClF difference tone test (IM components

G

Frequency range Difference frequency range Residual IMD

(Vn a250 mV,

source resistance 6 1 kR,

<+40°C)

Minimum input level

-

-~

~~

-

~

Accuracy (IMD ~30% and readings distortion range)

---.

~.~

>4% of selected

-~

FILTERS

1 kHz)

Fully automatic SMPTE, DIN, or CClF difference tone tests depending upon actual input signal whenever respective IMD 620%. Distortion ranges are same as

THD

t

N function.

-.

- - -

50 Hz to 250 Hz

3

kHz to 100 kHz

:

1

to 5: 1 (lower : upper)

1

~0.0025% (-92 dB) for 60 Hz-7 kHz

or 250 Hz-8 kHz, 4: 1 signals,

-

response

rms

4 kHz to 100 kHz 80 Hz to 1 kHz

~0.0018% (-95 dB) with 14 kHz and 15 kHz,

Within

rms

k

10%

response

(i

1 dB)

-

.

-

Accuracy is limited by residual IMD and filter selection. Not applicable with quasi-

~

peak response (Option 02 only)

400 Hz high pass

~~~

80 kHz low pass

~

.

30 kHz low pass (standard and Option 01

only)

~

-

-~

-

22.4 Hz-22.4 kHz {Option 02 only)

-~

-

~~~-.~ ~ -~.~ - .~

A weighting (standard and Option 01 only)

~ ~

~

CClR WTG (Option 02 only)

-3 dB at 400 Hz,

+

5%; at least

-40 dB rejection at 60 Hz

-3 dB at 80 kHz,

-3

dB at 30 kHz, k 5%

-3

dB at 22.4 Hz, + 5% and

22.4 kHz,

+-

Scans

5%

by

_+

5%

ARTEK

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3

pole Butterworth response

-.

- - --

3

pole Butterworth response

3

pole Butterworth response

--

.-

Nithin specifications of CClR Recommenjation 468-2 and DIN 45405 for ~nweighted measurement response.

Nithin specifications for type 1 sound lev?I

meters listed in ANSI S 1.4 1971 (re-

lised 1976) and IEC Recommendation

179.

-

Nithin specifications of CClR Recommeniation 468-2 and DIN 45405 for noise neasurements. Functional only with quaii-peak detector (response).

-

.

- - -

-

--

REV

NOV

1981

Table

1-1

(cont)

Performance

--

-

--

Requirements

-

-- . - - -

-

---

-

Supplemental Information

-

.

--

-

--

- - -

-

---

-

Auxiliary

-

--

-

.-

FRONT PANEL SIGNALS MONITOR OUTPUT

lmpedance

FUNCTION OUTPUT

Signal

Sensitivity

Maximum

Input Voltage

Selects front panel AUXILIARY INPUT alowing connect~on of external filter be-

-

--

-

1 V rms, k 10%

ween lt and FUNCTION OUTPUT.

-

- - -

-

Constant amplitude (average response) version of differential input signal. THD is typically 20

Hz

~O.OOIOO/~

to 20 kHz.

(-

100 dB) from

Approximately 20 times input signal.

1

V,

+-

3%,

for 1000 count volts or

display.

+-

3%, for 1000 count volts or

1 V,

display.

Selected and filtered ac signal actually be-

O/O

ing measured.

Loop-through accuracy from FUNCTION

O/O

IS

t

OUTPUT

3%.

15 V peak, 6 V peak for linear response.

lmpedance

DETECTORS AND DISPLAYS

Detectors (Response)

RMS AVG (standard and

Option

Q-PK

01)

-

- - - - -

(Opt~on 02 only)

- - - - -

Ac coupled.

True rms detection.

- - - - -

-

- - -

-

Average detection, rms calibrated for

sinewaves. Typically reads 1 to 2 dB lower than true rms detection for noise, THO+

N,

-.

--

and IMD measurements.

~

Quasi-peak detection, rms calibrated for sinewaves. Within specifications of

CClR Recommendation 468-2 and DIN 45405. Due to the peak hold nature of its response readings considerably higher than rms response will occur with large crest factor signals such as noise. The input range indicators should be ignored and auto-ranging avoided with these types of signals.

REV

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1981

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--

~

Displays

Digital

~

Characteristics

~

--

~

--

I

Table

1-1

--

(cont)

-

.

--

3

112 digit, 2000 count

LED.

Overrange in-

--

Performance Requirements Supplemental Information

dication is 1, blank, blank, blank.

--

Analog bar graph

MISCELLANEOUS

Power consumption Internal poker supplies

+5

-.

-

Fuse Data

Recommended adjustment

interval Warm-up time

10 segment LED intensity modulated bar

graph display of digital readout. Seg-

ments are logarithmically activated with

approximately 2.5

--

-.

-

I

224

-

.

watts

Nominally + 15.1

Nominally - 15.1

--

-

Nominally +5.0

3

AG,

1

A,

3

AG,

1

A,

3

AG,

1

A,

-

-- --

-.

250 250 250

dBIsegment.

-

- - - . - - -

V,

k

3%

V,

k

5%

V,

+

-.

V,

fast blow

V,

fast blow

V,

fast blow

--

5%

- - --

- - -

-

-.

--

1000 hours or 6 months whichever occurs

first

20 minutes (60 minutes after storage in high humidity environment)

-

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1981

Table

1-2

ENVIRONMENTAL CHARACTERISTICSa

..~

Characteristics

-

--

-

.

--

. .

Temperature Meets MIL-T-28800B, class 5.

.

i

ppppp.-----

Description

Operating

Humidity

--

Altitude

Operating Non-operating

-

- - - . -

-

Vibration

- --

-

95% RH,

45% RH, to t-50°C

0°C to +40°C

-

4.6 km (1 5,000 feet) 15 km (50,000 feet)

.

Exceeds

----

-

Exceeds MIL-T-28800B, class 5.

p-

- . --

Exceeds MIL-T-28800B, class 5, when

MIL-T-28800B, class 5

~~

installed in qualified power modulesb.

0.38 mm

(0.015") peak-to-peak, 5 Hz

to 55 Hz, 75 minutes.

MIL-T-028800B, class 5, when

Shock

Meets

installed in qualified power modulesb.

30 g's

(112 sine) 11 ms duration, 3 shocks in each direction along 3 major axes. 18 total shocks.

-

Bench handlingC

-.

~-

~

~~

.. - .

EMC

Electrical discharge

----

-

.With power module. b~efer to

TM

500

power module specifications.

=Without power module.

Meets

MIL-T-28800B, class 5.

12 drops from

45@. 4" or equilibrium,

whichever occurs first.

Qualified under National Safe Transit Association Preshipment Test Procedure B-1 and 1A-B-2.

Within limits of MIL-461A.

20 kV maximum charge applied to instrument case.

I

.. . . - . . .

.

-

..

-

.

1A-

REV

NOV

1981

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Characteristics

.

-~

-~-.

~

-.~~- . --

-

~-

Maximum Overall Dimensions

1-3

Table

PHYSICAL CHARACTERISTICS

p--.---p-----.---.-

-..

-

Description

.. - . - -.

~-

-

.

---

-~

~

Height

Width

Length

-

Net Weight

-

--

Finish

Front Panel

- - --

--

126.0 mm (4.96 inches)

131.2 mm (5.1 6 inches)

(1

-.

285.5 mm

~1.7

1.24 inches)

kg (3.75 Ibs.)

Plastic-aluminum laminate

Anodized aluminum

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1981

OPERATING INSTRUCTIONS

Section

2-AA

501

Preparation For Use

The AA is calibrated and received. It operates in any two compartments of a TM 500-Series power module. See the power module instruction manual for line voltage requirements and power module operation. Figure installation and removal procedure.

Turn the power module off before inserting the

AA

501.

Otherwise, arcing may occur at the rear interface connectors, reducing their useful life and damage may result to the plug-in circuitry.

Check to see that the plastic barriers on the

connecting jack of the selected power module compartment match the cutouts in the AA 501 circuit board edge

2-1

shows the AA 501

use

when

inter-

connector. Align the AA 501 chassis with the upper and lower guides of the selected compartment. Press the AA 501 in, to firmly seat the circuit board in the inter-

connecting

To remove the AA 501 pull the release latch (located in

the lower left corner) until the interconnecting jack

disengages and the AA 501 slides out.

Check that the AA 501 is fully inserted in the power module. Pull the power switch on the power module. One or more characters in the

visible.

jack.

LED

display should now be

Repackaging Information

If the Tektronix instrument is to be shipped to a Tektronix Service Center for service or repair, attach atag

Fig.

Scans

2-1.

Installation and removal.

by

AR

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ENGLISH

2-1

Operating Instructions-AA 501

showing the owner (with address) and the name of an

individual at your firm that can be contacted. Include the complete instrument serial number and a description of

the service required.

Save and reuse the package in which your instrument

was shipped. If the original packaging is unfit for use or

not available, repackage the instrument as follows:

Surround the instrument with polyethylene sheeting to

protect the finish of the instrument. Obtain a carton of corrugated cardboard of the correct carton strength and having inside dimensions of no Iessthan six inches more than the instrument dimensions. Cushion the instrument by tightly packing three inches of dunnage or urethane foam between carton and instrument on all sides. Seal the carton with shipping tape or an in-

dustrial stapler.

The carton test strength for this instrument is 200

pounds per square inch.

Controls, Connectors, and Indicators

All controls, connectors and indicators (except for the

rear interface connector) required for operation of the AA 501 are located on the front panel. Figure2-2 provides a brief description of all front panel controls, connectors, and indicators.

@ @

@

Release Latch

LEVEL

Button in selects input level measuring function.

VOLTS

Button in selects voltage units for level function.

Button in selects

n)

600

dB

Button in selects dB ratio, with respect to preset level, as units for level function.

PUSH TO SET 0

Push button to set display to 0 with input signal applied to INPUT terminals in LEVEL function. dB RATIO and LEVEL pushbuttons must be in for

this feature to operate.

units for level function.

RATIO

dBm (reference is 1 mW into

dB

REF

@

INPUT LEVEL RANGE

Selects input voltage range or AUTORANGE. The three most sensitive ranges operate in the LEVEL FUNCTION only.

DECREASE RANGE

When this light is illuminated, reduce the INPUT LEVEL RANGE until the light goes out.

INCREASE RANGE

When this light is illuminated, increasethe INPUT

LEVEL RANGE until the light goes out.

INPUT

Differential input terminal. Positive going input signal provides positive going output signal at INPUT MONITOR.

INPUT

Differential input terminal. Negative going input signal provides positive going output at INPUT MONITOR.

@

REAR INTFC-INPUT

Button in selects rear interface input; button out selects front panel input.

@

RESPONSE

Button in gives RMS detection (responds to the rms value of the input waveform). Button out

gives average detection (rms calibrated for si newaves).

Button in selects total harmonic distortion FUNC-I-ION.

@

IMD (Option 01 instruments only)

Button in selects intermodulation distortion func-

tion.

@

AUTO RANGE

Button in selects automatic distortion range

selection (0.2% to 100% full scale).

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Operating Instructions-AA

501

REV

NOV

1981

Fig. 2-2. Front panel controls and connectors.

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2958-1

ENGLISH

3A

2-3

Operating Instructions-AA 501

@

20% AUXILIARY INPUT

Button in selects full scale distortion readout of Provides input to the detector circuit when the 20% with 0.01% resolution.

Button in selects full scale distortion readout of 2% with 0.001% resolution.

Button in selects full scale distortion readout of digital display for nulling and peaking. Each

0.2% with 0.0001% resolution.

@

dB

Selects single equivalent 0 dB to -100 dB distor-

tion display range with 0.1 dB resolution.

@

400 Hz HI PASS

Button in connects filter before detector circuit in

all functions.

EXT FILTER button is pressed.

@

Ground

Provides front panel chassis ground connection.

LED Bar Graph

Provides approximate analog display of the

segment represents about 2.5 dB.

@

Digital Display

3

1/2 digits. Overrange indication is a blanked

display with the numeral 1 in the most significant

digit position.

@

VOLTS

llluminated when display units are volts.

@

80 kHz LO PASS

Button in connects filter before detector circuit in

all functions.

@

30 kHz LO PASS

Button in connectsfilter beforedetector circuit in

all functions.

@

'A'

WEIGHTING

Button in connects filter before detector circuit in all functions.

@

EXT FILTER

Button in allows connection of external filter between FUNCTION OUTPUT and AUXILIARY INPUT in all functions.

Instrument Connections

INPUT MONITOR

Provides a sample of the input signal.

@

FUNCTION OUTPUT

Provides a sample of the selected FUNCTION the rear interface signal input press the INPUT pushbut-

signal. ton.

Connections can be made to the rear interface connector. However, due to possible crosstalk, low level or distortion measurements made through the rear interface may be degraded. To measure signals connected to the front panel make certain the INPUT pushbutton is out.

mVOLTS

llluminated when display units are millivolts.

@

pVOLTS

llluminated when display units are microvolts.

llluminated when display units are percent.

@)

dBm

Illuminated when display units are

@

dB

Illuminated when display units are dB.

To make connections to the AA 501, refer to Fig. 2-3.

dBm.

Toselect

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SG

505

Oscillator

AA501

Dlstortlon Analyzer Oscilloscope

Operatlng

Shielded twlsted pair

Instructions-AA

501

Fig.

2-3.

Typlcal connectlons for distortlon measurements. See text.

300

V

Maximum front panel input voltage is

200

V

rrns either input to ground or differentially.

42

V

Maximum rear interface input is rms.

AA

The cidental overloading. This circuitry will recover without damage from continuous 120 V rms (30 minutes at 200 V rms) overloads in any INPUT LEVEL RANGE setting.

In most cases, for maximum hum rejection, follow the cabling and grounding as shown in the figure. Shielded, twisted pair offers maximum hum and radio frequency interference rejection. Cable shielding, if used, should be grounded only at the AA 501 front panel ground post. Use shielded cable to connect the output of an oscillator, external to the device under test, to the input of the device. Generally, if the device under test has one side of the input grounded, float the output of the external oscillator to avoid possible ground loops. If the input to the device under test is floating (not chassis grounded) then select

the grounded mode for the output of the oscillator.

Terminate the output of the device under test in its

501 input circuitry is protected against ac-

peak and

peak,

30

V

2958-02

recommended load impedance, or the load impedance specified in the appropriate standard.

The illustration shows an optional oscilloscope for visual monitoring. If connected as shown in the illustration. channel 1 displays a sample of the input signal and channel 2 displays the distortion components when in the

IM or THD+N function.

Level Measurements

In the LEVEL function the AA 501 operates as a wide band ac voltmeter. The Specification section of this

manual contains operating parameters for this meter. The meter is rms calibrated and either rrns or average responding, depending on the position of the RESPONSE pushbutton.

Press the FUNCTION LEVEL pushbutton. The top

three buttons to the left of the FUNCTION pushbuttons

dBm

600

n,

select readout units as VOLTS, An LED to the right of the display indicates the display

units. To measurevoltage press the VOLTS pushbutton. If

the INCREASE RANGE LED is illuminated, adjust the

INPUT LEVEL RANGE control to higher ranges until the

or dB RATIO.

ENGLISH

2-5

Operatlng Instructions-AA

501

LED goes out. If the DECREASE RANGE LED is illuminated, turn the INPUT LEVEL RANGE control counterclockwise to a lower range until the DECREASE

RANGE LED goes out. For specified instrument accuracy adjust the INPUT LEVEL RANGE as just described. However, readings are usable as long as the display is not overranged. Overrange is indicated by a blank display with

the numeral 1 in the most significant digit slot. If the

INPUT LEVEL RANGE switch is placed in the AUTO RANGE position, the input level adjustment is ac-

complished automatically. The or pVOLTS) automatically illuminate showing the proper display units. Notice that the three most sensitive ranges on the INPUT LEVEL RANGE control operate in the

LEVEL FUNCTION only.

When the opposite The reference level for this measurement, dissipated in 600 developed across a 600 RANGEswitch operates in thesamemanner as previously

described.

The dB RATIO mode permits direct ratio meas-

urements of two input signal amplitudes. When the dB RATIO pushbutton is pressed, the LED opposite the dB nomenclature on the display is illuminated. To use this

feature, press the dB RATIO pushbutton. To establish the

input signal as 0 dB REF pushbutton and notice that the display reads all zeros. As the amplitude of the input signal is changed, the display will read the dB ratio of the input signal to the reference signal amplitudes.

There are many useful applications for the dB RATIO

mode in measurements of gain-loss, frequency response,

S/N ratio, etc. For example, the corner frequency of a filter may be quickly checked. Set the test frequency to some midband value and set the zero dB reference. Adjust the test frequency until the display reads -3.0 dB; this is the corner frequency of the

Gain measurements may be similarly simplified by using this feature. Set the device to be tested as desired and connect the AA 501 input to the input of the device under test. Press the PUSH TO SET Connect the input of the AA read the gain or loss directly from thedisplay. When using

the SG 505 oscillator and the TM 500 rear interface feature, changing of external connections to establish the 0 dB input level reference is not necessary. Interconnect the Buffered Main Output of the SG 505 and the rear interface input of the AA 501. Pressing the REAR pushbutton will conveniently allow direct measurement of the signal level going to the input of the device under test.

dBm 600

dBm on the display indicates the display units.

0 dB reference, push the PUSH TO SET

f2

f2.

This is equivalent to 0.7746 V rms

fllter.

LED'S (VOLTS, mVOLTS

pushbutton is pressed, the LED

0 dBm, is 1 mW

C2

resistor. The INPUT LEVEL

0 dB REF pushbutton.

501

to the device output and

INTFC

When measuring signal to noise ratio or making noise

level measurements, it is often desired to employ a

frequency dependent weighting network. The AA 501

provides several internal filters as well as facilities for connecting external filters. For information on their operation and use, see the text under Filtersin thissection

of the manual.

Dlstortlon Measurements

Distortion is a measure of signal impurity. It is usually

expressed as a percentage or dB ratio of the undesired

components to the desired components of a signal. Harmonic distortion ly related or integral multiples of

the fundamental, and can be expressed for each particular

harmonic. Total harmonic distortion, or THD, expresses the ratio of the total power in all significant harmonics to that in the fundamental.

A distortion analyzer removes the fundamental of the

signal to be investigated and measures the remainder. See

Fig.

2-4. Because of the notch filter response, any signal

other than the fundamental will influence the measure-

A

ment. inevitably include effects from noise or hum. The term THD+N has been recommended' todistinguish distortion measurements made with a distortion analyzer from those made with a spectrum analyzer. A spectrum analyzer allows direct measurement of each harmonic. However, it is relatively complex, time consuming, and requires interpretation of a graphic display.

All distortion analyzers are limited ultimately by their internal distortion and noise. Traditionally, distortion analyzer residual noise and distortion have been specified separately. However, because an actual measurement always includes both effects, both residuals must be combined to determine the minimum valid reading. For example, an analyzer rated at 0.002% residual distortion and 0.002% noise may exhibit a

0.0028% and still be within specification. Also, average responding analyzers may read up to rms responding analyzers. The AA 501 specifies the combined residual effect with rms response and offers selection of rms or average response.

Distortion analyzers can quantify the nonlinearity of a device or system. The transfer (input vs output) characteristic of a typical device is shown in Fig. 2-5. Ideally this is a straight line. A change in the input produces a proportional change in the output. Since the

actual transfer characteristic is nonlinear, a distorted

'

IHF-A-202 1978. Standard Methods of Measurement for Audio Ampllflers. The Institute of High Fidelity, Inc., 489 Fifth Avenue. New York, N.Y. 10017

total harmonic distortion measurement will

issimply the presence of harmonical-

a

single pure tone called

THD+N reading of

25% lower than true

ENGLISH

2-6

-

Fig.

2-4.

Block dlagram of a baslc harmonlc dlstortlon analyzer.

version of the input waveshape appears at the output. The output waveform is the projection of the input sine wave on the device transfer characteristic as shown in Fig.

2-6.

The output waveform is no longer sinusoidal, due to the nonlinearity of the transfer characteristic. Using Fourier series it can be shown that the output waveform consists of the original input sine wave, plus sine waves at integer multiples of the input frequency. These harmonics represent nonlinearity in the device under test. Their amplitudes are related to the degree of nonlinearity.

Distortion Measurement Procedure

All of the controls found on a traditional distortion

analyzer areautomated on the to set the INPUT LEVEL RANGE and distortion range switches to AUTO RANGE, press for a reading. Minimum input signal amplitude for distortion measurements is 60 the instrument may be manually operated as described in the following paragraphs.

AA

mV. To

501.

It isonly necessary

THD+N and wait briefly

providegreaterflexibility

-

A

Output

Fig. 2-5. Transfer characterlstlcs of an audio device.

4

0

2958-04

REV

NOV

1981

Scum

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ARTEK

MEDU

ENGLISH

2-7

Operating

Instructions-AA

501

A

Actual

transfer

characterlstlc

/

Actual Ideal

Output output output

/

1

/

Fig.

2-6.

Input

THD

test of transfer characterlstlcs.

lnput

'.be/

/

2958-05

-

Adjustment of the input level range control is the same as for level measurements. Manually setting the INPUT LEVEL RANGE control to the correct scale ensures that

10

to

12

the input is within the

derangeof theinternalauto

set-level circuitry. The range lights must be extinguished

200

to make readings to specified accuracy. The and

20

mV ranges do not operate in the distortion

pV, 2 mV

function.

To manually select a distortion range, press the

THD

tN button and the desired range button. Selection of AUTO RANGE causes the instrument to autorange the distortion readout. The remaining range pushbuttons cause the instrument to stay in these ranges without autoranging. This can reduce the measurement time

slightly if the approximate reading is already known. This is useful in production line testing or in the testing of low distortion equipment.

ENGLISH

2-8

ThedB display iseffectively asingle

range; however, internal instrument operation is identical

to AUTO RANGE.

When making distortion measurements, the RESPONSE button should normally be in the RMS position. Current distortion measurement standards re-

quire the use of rms reading instruments by specifying power summation of each of the components. The AVG mode may be used when making comparisons with readings taken with traditional distortion analyzers. However, it may read up to

25% (2

dB) lower than rms

response.

For frequencies below

measurement may be improved by activating the LO PASS filter.

If

'20

kHz the residual noisein the

80

kHz

hum (line related components) are

interfering with the measurement, they may be removed

Operating Instructions-AA

501

with the 400 Hz HI PASS filter. This filter should not be employed at frequencies below 1 kHz as erroneous readings will result. For more information see text under

Filters in this section of this manual.

A distortion analyzer must tune out the fundamental frequency. In the AA 501 all tuning of frequency is done automatically. For input signals with greater than about 20% noise and distortion, care must be taken to ensure proper locking of thiscircuitry. Inmost applications which require higher distortion measurements (for example, SINAD' testing) the circuitry remains locked after it is initially given a clean signal. To perform a receiver under test is first given a high level input. The AA 501 will lock onto the audio signal at theoutput. Therf level feeding the receiver is then reduced until a 712 dB distortion reading is obtained on the AA 501.

'

Defined in Electronic Industries Association Standard No.

RS

204A, July 1972, Electronic Industries Association,

Engineering Department, 2001 Eye St. N.W., Washington, D.C.

20006.

SlNAD test, the

IM Distortion Measurements (Option

Another measurement of distortion is the interaction of

two or more signals. Many tests have been devised to

measure this interaction. Three standards are

DIN4, and CCIF'. The Option 01 AA 501 is capable of

automatically selecting and performing all three tests.

To measure intermodulation distortion (IM), according

to SMPTE and DIN standards, the device under test is

excited with a low frequency and high frequency signal simultaneously (Fig. 2-7). The output signal is high-pass filtered to remove the low frequency component. The high frequency tone is then demodulated, as an AM radio signal. The demodulator output is low-pass filtered to

Society of Motion Picture and Television Engineers, Standard

No. TH 22.51, 862 Scarsdale Avenue, Scarsdale, N.Y. 10583.

Deutsches lnstitut fur Normung e V, No. 45403 Blatt 3 and 4,

January 1975, Beuth Verlag GmbH, Berlin 30 and Koln 1.

'

International Telephone Consultative Committee.

01)

SMPTE~,

High Frequency

Oscillator

-

Fig. 2-7. Block diagram of basic IM analyzer.

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Meter

2958-06

ENGLISH

2-9

Operating Instructions-AA

remove the residual carrier (high frequency) components. The amplitude of the low frequency modulation is displayed as a percentage of the high frequency level.

As shown in Fig. 2-8, when this composite signal is

applied to the device, the output waveform isdistorted. As

the high frequency tone is moved along the transfer

characteristic, by the low frequency tone, its amplitude changes. This results in low frequency

tion of the high frequency tone. This modulation is

apparent in the frequency domain as sidebands around

the high frequency tone. The power in these sidebands

represents nonlinearity in the device under test.

The amplitude ratio of low to high frequencies should

be between ly adjusts calibration to compensate for the selected test signal ratio. Some additional range is provided in this circuitry to enable measurement of devices with nonflat frequency response.

4.1 and 1.1. The AA 501 circuitry automatical-

501

amplitudemodula-

7

SMPTE standard test frequencies are 60 Hz and The DIN standard is virtually identical to the SMPTE standard except for the two frequencies used. They may be any pair of octave band center frequencies, with the upper at least eight times as high as 8 kHz are common). The AA 501 can accept a wide range of test frequencies as shown in the Specification section.

CCIF difference frequency distortion is measured with two high frequency sine waves driving the device under test. Both are of equal level and closely spaced in frequency. Nonlinearities in the device under test cause the sine wavesto cross modulate. This creates new signals

at various sum For example, the commonly used 14 kHz and 15

frequencies produce 1 kHz, 13 kHz, 14 kHz, 15 kHz,

16 kHz, 28 kHz, etc. Ideally, one would measureeach new component with a tunable filter such as a spectrum analyzer. However, this is usually limited to an 80 dB dynamic range and is very tedious, Agood measureof this

anddifferencefrequenciesfrom

thelower (250 Hzand

kHz.

theinputs.

kHztest

-

Transfer (input-output) characteristics of test device

I

ENGLISH

2-10

Fig.

2-8.

IM

test of transfer characteristics in time and frequency domain.

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2958-07

Operating Instructions-AA

501

distortion may be obtained by measuring only the difference frequency (in this example 1 kHz). If only the low frequency component is measured, it is called a CClF second order difference frequency distortion test.

To measure two tone difference frequency distortion

the device is excited with two input signals as described

above. The output of the device is low-pass filtered to

extract the difference frequency. The level of this compo-

nent is expressed as a percentage of the high frequency

signals and is another measure of nonlinearity.

The AA 501 CCIF difference frequency mode will accept any pair of input frequencies which are within limitsas listed in of the two signals should be equal.

IM

Distortion Measurement Procedure (Option

Intermodulation and THD testing aresimilar, using the AA 501 (Option

signal source to the device under test, set the INPUT

LEVEL RANGE as described in the THD section. Press the IMD FUNCTION button and select a distortion range. Selecting AUTO RANGE or dB provides automatic ranging. The AA 501 accepts either a SMPTE,

difference frequency test signal. Selection between the

necessary analyzing circuits is accomplished

automatically.

There is a moveable jumper inside the AA 501 to allow selection of SMPTE-DIN, CClF or automatic selection between the two modes. Defeating the automatic test selection circuitry is recommended if making modulation distortion measurements greater than 20%.

Refer any jumper changes to qualified service personnel.

The

LO

will have little effect. The 400 Hz HI PASS and the 'A' WEIGHTING filters will cause erroneous readings because the tests fall between 50 Hz and activated in the components being measured.

thespecification section. Theamplitudes

01)

01 only). After

PASS filters may beselected inthe IM mode but

IM components of interest generated by the

IM mode attenuate someof the frequency

connectingtheappropriate

DIN, or a CCIF

inter-

1

kHz. These filters, when

Filters

The five buttons along the right edge of the instrument allow selection of four built-in frequency weighting filters plus an external filter, as desired. See Fig. curves of the various filters. The 400 Hz, 30 kHz and 80 kHz filters are all 3-pole (18 dB per octave Butterworth alignment. They are placed in the measuring

circuitry immediately before the average or rms detectors. These filters are functional in all modes of operation and affect the signal at the FUNCTION OUTPUT connector.

2-9for response

rolloff)

Check the position of all filter pushbuttons before

making measurements to prevent inaccurate results.

Filtering takes place after all gain circuits. It is possible to overload part of the instrument, when operating in the

manual distortion ranges with a filter selected, even though the display is not overranged. This may be checked by releasing the filter pushbuttons and checking the display for overrange or by pressing the AUTO RANGE pushbutton.

The 400 Hz HI PASS filter is used to reduce the effects of hum on the measurement. Although the differential input and common mode rejection of the AA 501 reduce

the effects of ground loops, extremely bad measurement

conditions may require use of this filter. The device under

test may also generate an undesirable amount of hum. limiting the noise and distortion residuals obtainable. This filter may be used when measuring level or harmonic distortion of signals at about 1 kHz or greater. This filter should not be used when measuring signals less than

1

kHz nor when measuring intermodulation distortion.

Use of the 80 kHz LO PASS filter reduces the effects of wideband noise and permits measurement of lower +N for input signals up to 20 kHz. For 20 kHz inputs, it allows measurement of harmonics up to the fourth order.

Do not use this filter if harmonic components above 80 kHz are of interest. When checking noise the 80 kHz filter may be used to reduce the measurement bandwidth. However, for most noise measurements, the 30 kHz LO PASS or 'A' WEIGHTING filters are recommended as they correlate better with the perceived noise level.

The 30 kHz LO PASS filter provides bandwidth limiting for broadcast proof of performancetesting. It is also useful for unweighted noise measurements on audioequipment. providing an equivalent noise bandwidth of 31.5 kHz. When the 30 kHz filter is used, the 80 It may be desirable to modify the 30 kHz filter so that it conforms to the 22.4 kHz IEC standard for audio noise measurements. This may be performed by qualified service personnel as described in the Service section of

this manual.

The 'A' weighting filter is used when measuring the

subjective noisiness of audio equipment. It conforms to

the noise measurement standards of the Institute of High

Fidelity (IHF). The filter shape is within ANSI, DIN, and IECQtandards for class 1 sound level meters.

International Electrotechnlcal Commlssion. Publlcatlon second edition, Precision Sound Level Meters, Office of IEC (sales Geneva

20

Switzerland.

department),

kHzfilter is disabled.

1,

rue de Varembe',

1973,

THD

179,

Central

1211

ENGLISH

2-11

Operstlng

Instructions-AA

501

10

Hz

20 30 50 100

Hz

200 300 500

Flg. 2-9. Response curves for AA

Connections for an external filter are also provided. Press the EXT FILTER pushbutton. Connect the external filter between the FUNCTION OUTPUT and the AUXILIARY INPUT. One application for the external filter is selective measurement of individual harmonics or components of an input signal. This may be accomplished using a TEKTRONIX AF 501 filter. Adjust the AF 501 to the desired cy; set the mode switch to NARROW and the gain to

bandpass filter as an external

harmonicfrequen-

1.

Another application, using the external filter, is the

measurement of noise according to the

CCIR/ARM~ method. A C~1R"ilter is inserted as an external filter with the response button in the AVG position.

Dolby et al, CCIR/ARM: A Practical Nolse-Measurement Method, Journal of the March 1979, p. 149.

lnternatlonal Radio

Audio Englneerlng Soclety,

Consultative

Committee.

Vol.

27,

No.

3,

1

kHz 2

501

filters.

5

10 kHz 20 30 50 100 kHz

2958-08A

When the AA 501 is used as a sound level meter, an octave or one-third octave filter set may be used to measure sound spectra.

Therear interface outputs may be used to drive a storage oscilloscope or chart recorder for plots, as desired.

Displays

The AA 501 provides two forms of display for

measurements. The digital readout displays the selected function with units. Overrange indication blanks all digits and displays a 1 in the most significant digit slot.

For rapid nulling or peaking applications, the digital display is supplemented by an uncalibrated LED bar graph for an analog meter-like display. The bar graph responds logarithmically, with each segment representing ap-

2.5

proximately a

Additionally, the intensity of the segments is modulated

between steps permitting resolution of changes as small

as 0.5 dB. The range of the bar graph is determined

dB change in the selected function.

by

the

ENGLISH

2-12

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=>

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1981

Operating Instructions-AA

501

measurement range in use. When using this featureit may

be desirable to select a manual range to prevent confusing

displays caused by autoranging.

Monitoring

The interface capabilities of the AA 501 may aid

considerably in the interpretation of measurements.

The INPUT MONITOR connector provides a fixed

(-1

amplitude version signals of 50 input signal on an oscilloscope, without constantly read-

justing the oscilloscope sensitivity. At input levels below

about 50 ly 26 dB (A =20) above the input signal level.

The FUNCTION OUTPUT is taken after the distortion

measurement and high gain amplifier circuitry. It can be

used for monitoring the signal read on the display. The signal at the FUNCTION OUTPUT connector is full scale reading on the display. In the level function this connector becomes an amplified version of the input signal. The gain from the input to this output is dependent on the LEVEL RANGE switch, and is given in Table When the AA 501 is used as a constant gain differential amplifier the INPUT LEVEL RANGE switch must be set to a fixed range. In the distortion function this output can be displayed components. This output may also be used to drive a spectrum analyzer or selective voltmeter for examining

the individual harmonics or modulation products. When

an oscilloscope is used, the triggering signal is best taken

from the sync

possible (for example in tape recorder or Telco link

testing) it should be obtained from the INPUT MONITOR

connector on the AA 501.

mV or greater. This allows display of the

mVthe INPUT MONITOR signal isapproximate-

in an oscilloscope to view the distortion

V rms) of the input signal for input

2

V for a

2-1.

output on the oscillator. If this is not

A procedure which may be used in to plot the transfer function of the device under test. For this measurement the FUNCTION OUTPUT drives the vertical input of an oscilloscope while the INPUT MONITOR drives the horizontal. The resulting display is similar to Fig. 2-10, and represents the deviation from linearity of the transfer characteristic. In other words, it represents the transfer characteristic after the best fit straight line is removed. If the device under test has large amounts of phase shift at the test frequencies it may be necessary to introduce a compensating phase shift into the horizontal channel. Since the FUNCTION OUTPUT is taken after the filters, they connector. The vertical scale is the deviation from the best fit line and is related to the distortion range and vertical sensitivity of the oscilloscope.

C

0

.-

z

.-

UI

will affectthesignal seen at this

theTHD+N modeis

ii

Input amplitude

Gains from INPUT terminals to

FUNCTION OUTPUT connector for

various settings of the

INPUT LEVEL RANGE control

LEVEL RANGE Setting

@

Table

2-1

I

Gain to FUNCTION OUTPUT

Scans

by

Fig.

2-10.

Oscilloscope display of deviation from linearity.

Asimilar proceduremay beemployedintheSMPTE IM

mode. The vertical signal is derived as before, but the

horizontal is obtained from the low frequency input test signal (not the actual input test signal). signal is available at the SYNC OUTPUT connector. The display is interpreted as in the THD method, while the

units are calculated as above. If two oscillators are summed to obtain the taken from the output of the low frequency oscillator. Transfer function testing is not possible in the difference tone mode.

IM test signal, the horizontal drive is

OntheSG 505this

ENGLISH

AR

TEK

MEN

=>

2958-09

CClF

2-13

THEORY OF OPERATION

l

ntroduction

Refer to the block diagram of this manual for a brief description and overall AA 501 operation. A detailed circuit description follows.

Input Amplifier

The input amplifier is designed for low noise and distortion. 'The input is differential with single-ended output. This circuit provides good common mode rejection for suppression of ground loop currents and other

unwanted signals which may be present on both input

leads.

'The input stage is protected to withstand at least

200 V rms on any input range.

-The input amplifier gain is set by the logic circuitry at 0 dB (unity), + 10 dB or + 20 dB. The logic circuitry controls the gain so that the signal voltage at the output of the input

amplifier remains between 0.75 V and 3.0 V rms. An uator, prior to the amplifier, additionally provides gain settings from gain or attenuation selected depends on the input voltage

level (or the setting of the INPUT LEVEL RANGE switch if not in AUTO RANGE). A full scale reading of 200 V corresponds to 40 dB of attenuation and 2 V full scale for unity gain.

-The input signal, from the front panel connections or the rear interface input (selected by SOURCE switch S1531) enters the input amplifier through P1620/J1620. Each input is ac coupled through C1630 or C1631. The signal then passes to the differential input attenuator hybrid, ratioed to maintain gain accuracy and good common mode rejection. Relays K1610 select attenuation from 0 dB (unity gain) to40 dB, respectively in 10 dB steps. Frequency compensation of the attenuator is provided by

-

10 dB to -40 dB in 10 dB steps. The actual

R1510. These resistors are laser trimmed and

located in the foldout Pages

viewof the

atten-

K1412, K1510, K1511, K1512, and

C1433 and C1520.

Section

CR1520 through CR1626. When the post attenuator voltage on any scale exceeds about

clampdiodes turns on to limit thevoltage at U1420Aand B. ~h~

effect

of

the

nonlinear capacitance CR1620, CR1621, maintaining a constant voltage across the diodes via a bootstrap arrangement.

The input signal is buffered by low noise amplifiers

U1520Aand U1420B. On the 0 dBthrough 40 dBattenua-

tion ranges, these buffers provide unity gain. Relays

K1410 and K1411 change the gain to +20 dB or $10 dB,

respectively, by adding resistors Capacitors sation.

The buffer outputs are combined into a single-ended output signal by is ac coupled by C1421 to remove any dc offsets caused by U1420A, B and U1432. This signal is then routed to the automatic gain control circuitry el detector.

The gains of the combining stage and the buffers are controlled by hybrid resistor laser trimmed and ratioed to insure gain accuracy and good common mode rejection.

The signal level at the output of the input amplifier is detected by active rectifier CR1330 and CR1331. This full wave rectified signal is

filtered by

circuitry through provided by

that,with2VintotheAA501 inputonthe2Vscale(3Vat

pin 6 of U1432) the output at pin 1 of U1330A is 6 Vdc.

C1423 and C1520 provide frequency compen-

U1330A with C1420 and routed to the logic

CR1624

U1432 (gain=1.5). The output of U1432 pin

J1500, pin 1. Recovery from overload is

VR1320. Resistor R1322 sets t he filter gain so

and

(agc) and input amplifier lev-

R1420. These resistors are

U1320 in conjunction with

i10 V, one set of

CR1625

R1420D or R1420E.

3-AA

of

clamp diodes

is eliminated by

501

6

When there is no attenuation (0 dB), DS1520 and

DS1521 limit the input current. The current passing

through the

resistance from a fairly low value.

Vac indefinitely and 200 Vac for at least 30 minutes. If

120

the AA 501 is subjected to greater overloads in the

attenuator position, the lamps act as fuses to prevent damage to the input circuitry. When any attenuation other

than

0 dB is selected, the resistance in the hybrid network provides current limiting. The inputs are clamped by Zener diodes

REV

JUN

lamps warms their filaments, increasing their

Theselamps can handle

VR1620 and VR1621 through eight diodes,

1981

Scans

0 dB

by

The gain

by transistors Q1400 through Ql600. Control signalsfrom

the logic circuitry enter the input board through

J1500, pins 2through

1-12 V). This logic high at the base of atransistorturnsthe transistor on and closes the relay. When either $10 dB or +20 dB (pins 6, 7 or

also activated closing

circuitry selects the proper input attenuation or gain to maintain 0.75 V to 3.0 V at than about 50

AR

TEK

MEDLA

settjng relays K1410through K161Oaredriven

9,

with one line at atime high (about

8)

is activated, Q1402, is

K1412. l n AUTORANGE, the logic

U1432 pin 6 for inputs greater

mV. Below 50 mVthe rangeis0.3 Vto 3.0 V.

=>

P1500-

0 dB,

Theory of Operation-AA

501

Automatic Gain Control

0

The output of the input amplifier feeds the agc circuitry at

levels between 0.75 V and 3.0 V for inputs greater than

mV, and the agc automatically adjusts the signal to a

50

constant 2

quent distortion measuring circuits.

The U1331, U1431, R1432, and amplifier U1430. The control element in the (LDR's), U1331 and U1431. Thesedevicesconsist of alight emitting diode and a semiconductor resistance cell in one package. As more control current is forced through the LED'S, the cells are illuminated more brightly and their cell's resistance decreases. This shunts more signal to ground. Two LDRs are used in series with shunting resistors signal levels present.

The control circuitry for the

U1330B with diodes CR1332 and CR1333. The filters

er, are composed of ponents. The circuitry seeks to keep the voltage at the out-

Vac. This is the reference level for the subse-

agc circuitry is composed of attenuator R1431,

agc is a pair of light-dependent resistors

R1338 and R1339 to minimize distortion at the

agc consists of active rectifi-

U1530A and U1530B and associated com-

6

put pin

2.0 V. This output voltage is varied to standardize the THD measurements by adjusting 'The output of U1430 is fullwave rectified by U1330B with diodes C1533 with the reference current from R1330. Amplifier U1530B in conjunction with C1530, C1534, R1530 and R1531 provides additional filtering of the rectified voltage to reduce distortion introduced by the Q1530 provides the current drive necessary for the LDRs, while VR1430 linearizes the open loop gain of the agc loop to optimize transient response at all signal amplitudes.

Notch Filter

input for the notch filter. The notch is formed by summing the output of an inverting band pass filter with the input signal. See Fig. and their associated resistors and capacitors comprise t he band pass filter. Amplifier

Filter tuning is accomplished in half decade bands by switching both resistors and capacitors. Capacitors are switched each decade. Relay

of low noise operational amplifier U1430 at about

R1330, the DlST CAL control.

CR1332, CR1333 and integrated by U1530A and

agc action. Transistor

@

The leveled output from the agc (U1430) provides the

3-1. Operational amplifiers U1130, U1131

U1020A isaninvertingsummer.

K1232 is energized for input

LED dependent Inverter Phase detector Integrator

Notch filter

agc (see text)

I

Integrator for frequency control

LED

dependent resistor for fine frequency adjustment

Input signal shifted

90' in phase

No quadrature phase component exists at the notch filter output when correctly tuned. No

component exists when the fundamental null (amplitude) is properly adjusted. Circuit gain is

exactly 1 from the filter input exists from the output of voltage at the input of

tothe output of U1130 when the gain is properly adjusted. Novoltage

U1130 to the output of U1020A. The average sinewave (fundamental)

UllOOB is zero when the filter frequency is correctly tuned.

amplitude control

'Or

inphase

2958-

10

Fig. 3-1. Simplified notch filter and control loop.

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1981

Theory of Operatlon-AA

501

frequencies below about 10 kHz. Below about 1 kHz

K1231 is also activated, while below about 100 Hz K1230,

K1231, and K1232 are used. K1030 is energized in the upper half of each decade reducing resistances by afactor of three and scaling up frequency by three. Continuous tuning within each half decade is achieved by adjusting the impedance of an electronic resistor opto isolators rises, the electronic resistor value decreases, at the

junction of

Minor variations in the gain of the band pass filter (which would cause incomplete cancellation of the fundamental)

are compensated by a third LDR, the

LDRs come from the control loop circuitry.

Synchronization signals to run the control loops come

from the outputs of

Frequency Band Discriminator

U1031 and U1032. As the LDR resistance

U1031 and R1132, raising the filter frequency.

U1130 and U1120A.

(U1131)

U1030. Drive signalsfor

with LDR

0

The signal from Ul120Bis squared by a Schmitt trigger, composed of determined by measuring the period of the resulting squarewave. When the input goes high, the outputs of U1500 change state. Assume the O outputs havejust gone high, startingthefourrc networks, connected of

U1500, changing. The capacitor voltage on each

network is compared via

Q1400 and Q1401. The frequency band is

to0 outputs

U1610 to a reference voltage

developed across input signal again goes high, the outputs of the comparators are latched in puts of networks preparing for the next cycle.

constant, the capacitorvoltage will be and the comparator output is high at the transition. See Fig. 3-2. Discrimination of half decades is obtained by selecting the appropriate rc network via a (U1600) and comparing it to a higher referencevoltage at pin 6 of inputs for switch point of the selected decade (about 2.8 kHz for the 1 kHz to 10 kHz band) the output of Resistors hysteresis at each decade edge, while hysteresis at the half decade points. This hysteresis prevents random band switching when measuring signals

close to the transition frequencies.

changes caused by grossly nonperiodic signals. Capacitor C1400 sets the internal clock frequency of U1400 at about

100 Hz. The input state to clock cycles or 0.04 seconds for any change in output to occur.

U1500 go low to discharge the capacitors in the rc

If the period of the input is more than half the

U1610B. The last column in Table

U1600. If the input frequency is below the ban

R1510, R1512. R1514and R1518 provideaslight

A bounce eliminator,

R1610, R1611, and R1612. When the

U1410. Simultaneously, the out-

rc time

abovethe threshold

CMOS

3-1

U1610B is low.

R1515 provides

U1400, prevents random band

U1400 must be stable for four

switch

shows the

A--1

6

01400 base

71

r

1

/

-

U1500C pin

UlsOOB6pln6

U1610C pin

U1610D pin 11

U1610A pin 5

Ul4lOC pln 10

UlrlOD pin 15

U1410B pin

9

7

REV

JUN

1981

Fig.

3-2.

Typical frequency discriminator waveforms at about 800

scm

by

ARTEK

MEDa

=>

Hz.

2958-1

1

Theory of Operation-AA 501

Table 3-1

TRUTH TABLE FOR

U1400 OUTPUTS

-

H H

L

7

U1600

input

pln no.

4

4 12 12 14

Q

Fln (Hz)

-

9.5-28 28-95

95-280 280-950 950-2.8k

Notch Filter Control

U1410A

pin 3

L

H

L

H

L

U1410C

Q

pin 10

H H H H

H

Q

U1410D

pin 15

H H. H H

L

Q

U1410B

@

The notch filter is tuned by in-phase and quadrature

phase (shifted

signal. See Fig. 2 of

U1002A while thequadrature component inputsat pin

6

of UI002B. Whenthe notch frequency is correct1 y tuned,

there is no quadrature phasecomponent at the notch filter

output. When the fundamental null (maximum amplitude rejection) is adjusted correctly, there is no in-phase component in the notch filter output.

90") components of the input fundamental

3-1. Thein-phasecomponent inputsto pin

determine, after passing through integrators U1100A and

U1 1008, the direction of frequency change and amplitude

change necessary to properly set the notch frequency and

null the fundamental. Adjustments

out the effects of offsets in the operational amplifiers

enabling adjustment of the loops for best nulling of the fundamental frequency. When stabilized, the dc signal at

pins 14 and 15 of

INTERNAL CONNECTIONS IN UlOOO DEPENDING

ON LOGIC STATES OF

Logic States

Distortion Ampllfier

U1000 is essentially 0

Table 3-2

I

R1100 and R1101 trim

V.

PINS 10 AND 11

1

Pins

12

& 2 to 14; 13 & 1 to 15

&

1 to 14 & 15

13

0

This circuitry amplifies the distortion components from the THD notch filter or the IMD section, as well as providing additional gain for the three lowest input level ranges.

The notch filter output is amplified by U1001B. A total of 50 dB of gain is provided by these amplifiers. Differential input to U1001A. The output of the 50 dB amplifier stage is rectified by by 01010 and filtered by

of 0101 1. This automatic gain control loop serves to level

Input to the phase detector at about 5 V peak or less.

the The amplifier gain is reduced by 01012 in the lowest fundamental frequency decade.

As

of the notch filter feeds pin 2 of

forms a CMOS compatible logic signal to drive the CMOS

multiplexer, similarly feeds pin 6 of

arrangements of toU1100Aisswitched betweentheinverted (pins 1 and 13) and the normal (pins 2 and 12) output of the notched filter at a rate and phase determined by the in-phase signal at

pin 10. The input to

normal and inverted inputs to UlOOO at a rate and phase determined by the quadrature signal at pin 11.

The outputs of the synchronous demodulator are integrated by U1100B for the frequency control loop, buffered by 01001

01 110, to drive the LDR opto-isolators in the notch

and

filter. The net dc polarity of the signals at pins 15 and 14

CR1001 and CR1002. This signal is amplified

C1013to contro! the attenuation

stated earlier the in-phase component of the output

U1000. The 90" phase shifted component

U1000 are shown in Table 3-2. The input

U1100B is also switched between the

UllOOA, for the amplitude control loop and

U1000 is provided by

U1002A:This circuitry

U1002B. The switching

U1020B and

Multiplexer

distortion amplifier. The four sources are: input stage pins

5

and 14, input stage less 10 dB pins 1 and 13 (through R1212 and R1213) THD notch filter pins 2 and pins 12 and 15. Control of U1300 is through the level and IMD switches, as well as the output of mode 01300 turns on through 01602. This action shorts the THD input to

The distortion amplifier gain iscontrolled by multiplex-

U1210. The input to UllOlB, attenuated by R1216,

er R1217 or R1218 is supplied from U1210. See Table 3-1. A

gain of

+46 dB is provided by U1101Aand B. The output of

UllOlA supplies a 4 V rms full scale signal to the filters.

GAIN AND SWITCHING THROUGH U1210

Gain through

Pins

9

10

0 0 0

1

10 11

U1300, selects the input source for the

4,

U1012A. In the IMD

U1300 to prevent possible crosstalk.

3-3

Table

Internal connections

pins

13 to 2 and 1 to 3 13 to 2 and 5 to 3 13 to 2 and 2 to 3 13 to

5

and 2 to 3

Dist Amp

$6

dB f26 dB +46 dB

+66

dB

U1310 gain

0 dB 0 dB 0 dB

+20 dB

and IMD

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1981

Theory of Operation-AA

501

Filters and

Ac-Dc

Converters

@

The output of the distortion amplifier enters the main

board through P and and the distortion amplifier ranging level detector. The detector, composed of rectifies and filters the distortion amplifier output. This dc signal goes to the logic board to control auto-ranging of the distortion amplifier.

The weighting filters consist of U1321. Switch S1100B routes the signal through R1111, R1113, R1211, C1101 and C1211, These components comprise the 3 pole 80 kHz Butterworth low pass filter. Pressing R1210, C1102 and C1210 which comprise the 30 kHz low

pass filter. Switch filter to the input of associated components to supply the extra low and high frequency poles for "A" weighting response. A three pole 400 Hz Butterworth high pass composed of associated components is activated by nal filter connects into the circuit via U1210Band the AUXILIARY INPUTat pin 5. Pin 6 of U1220 provides signal to the FUNCTION OUTPUT connector,

through

both rms and average techniques. Rms conversion is accomplished in computing approach. The averaging capacitor is low pass filter,

S1100C routes the signal through R1110, R1112,

R1100.

After filtering, the signal is converted to a dc voltage by

U13106, reduces noise in the readout.

J1300 to drive the weighting filters

U1121A and U1121B full wave

U1210A, U1220 and

S1100D connects the 30 kHz low pass

U1210A and inserts U1321 and

U1220 and

S1100A. An exter-

S1100E through

U1201 (pin 10 out) using an implicit

C1213. A

proportional to the log of the ratio of the dc input signal to

the reference voltage as described in the relationship:

E

=

C . loglo

C is a constant and Ic is the noted collector current. The converter output is zero when the input voltage is 1.55 V, with a scale factor of -100

Operational amplifier U1312D provides a constant

collector current in voltage at action of with the input voltage. equal (at Vin

U1312C pin 8 is at 0 V. Theoffset voltageof thedifferential

pair and output level. Compensation for the offset voltage of

U1312C is provided by R1245. This provides correct log conformity at low input voltages. Inversion of the dB output is provided by provides the dB voltage to the bar graph display.

The three remaining transistors in heaters to maintain the differential pair a constant temperature. The voltage at proportional to the temperature of

compared with the reference voltage and any error is

amplified by 01311 which supplies current to the heater transistors.

The -20 dB Adjust, differential pair for the correct scale factor.

0. The collector of U1222A is held at 0 V by the

U1312C. The collector current in U1222A varies

=

U1312A is adjusted by Rl341, whichsetsthe0 dB

U1312B. The amplified error signal drives

U1222B while holding the collector

1.550 Volts), U1222A pin 2 is at 0 V and

R1501, sets the temperature of the

Ic for U1222A Ic for U1222B

mV/dB.

Whenthe two collector currentsare

U1312A. Pin 1 of U1312A also

U1222 serve as

(U1222A and B) at

U1222 pin 3 is

U1222B. This voltage is

The averaging rectifier is

CR1302. The o~ltput from this rectifier is smoothed and

filtered by

The average detector output connects to 01310 in the average response mode, overriding the rms converter.

dB

The dB section is fed by the dc output voltage from the

rms or average detector. Shown on this schematic are the

dB converter,

circuit, and a voltage reference.

The dB converter consists of quad operational amplifier circuitry. The input to the converter is

from the rms or average detectors and the

The output is a dc signal at

U1310A, C1301, and associated components.

Converter

dB/Volts switch, offset generator, dB ratio

U1312, transistor array U1222 and associated

U1301 along with CR1301 and

U1310B via

a

0-4 V dc signal

6

V reference.

U1312A pin 1. This signal is

dB

Offset Generator

The offset generator consists of U1313D, U1231, and R1332. This circuitry provides a dc offset voltage that is added to the log converter output at the input of operational amplifier

from the logic section which indicates the gain in the

signal path.

The reference voltage is divided by

voltages. Multiplexer voltages (or ground) and supplies it to setting resistor for with its output, is included in supplied to

This signal is routed to U1407, a multiplexer, which

selects the dB-processed voltage voltage directly from the rms-average detectors. This voltage is supplied to the dvm section. In the distortion modes, reference is changed from In the dB ratio mode, U1313C also adds the stored reference voltage from the

U1313C through R1246.

R1400 provides'a small offset so that the 0 dB

0

U1313C. This voltage is set by input

R1332intosix offset

U1231 selects one of these six

U1313D. The gain

U1313D, as well as a resistor in series

R1332. The offset output is

(+I0 mV/dB) or the

,775 V (0 dBm) to 1 V (lOOO/o).

dBr section.

Scam

by

ARTEK

MEDLQ

Theory of Operation-AA 501

dB Ratio Circuitry

The dB ratio circuitry allows selection of any input voltage as offset voltagefrom pin 150f causes voltage.

Amplifiers

form a digital to analog converter which supplies the dc

offset to the input of an 11 bit binary counter composed of This counter is controlled by dual flip-flop U1531 B which

is supplied with a clock signal from the gated oscillator

corpposed of U1431A and B.

When the dB ratio button is pushed (grounded) a debounce circuit composed of U1431 C and D causes pin 3 of

U1531A to go high. A short time later, determined by

R1441 and C1445, pin 4 of U1531A goes high terminating

the high at pin 1. A positive pulse appears at

resetting counters This allows the oscillator to start. The oscillator increments the counters changing the voltage offset. When

the0 dB reference button is pushed the counter starts with the most negative voltage offset and increments in the

positive direction. The output of

comparator

U1331B pin 7 goes high, causing U1531B pin 12 to go low

at the next clock pulse. This action stops the oscillator.

Future

U1331A goes positive a short time before U1331B pin This switches the oscillator ot a lower frequency through Q1447 and C1433 to prevent the circuits from overshooting the correct value.

0 dB. This is accomplished by adding a dc

0 Vat pin 8 of U1313C at thedesired AA 501 input

U1331 C and D with resistor network R1333

U1331B. When the output of U1313C is 0 V,

dBr readings are referenced to this voltage. Pin 1 of

0

R1333topin9of U1313C. This

U1313C. This converter is driven by

U1321 and U1332.

U1531 pin 1,

U1321 and U1332 and flip-flop U1531B.

U1313C connects to

7.

The most significant LED module, DS1022, is controlled by or

0. The 0 is displayed only in the 0.2% distortion range.

If a decimal point is needed in LED display 2 of U1201A is low. This assures that pin 11 of U1201D also low and illuminates the two segments comprising the one (1) in the most significant digit module,

19 of required. The one is changed to a zero by illuminating an additional four segments of left of the most significant digit module is used only in the dB mode. luminating in any other mode.

The ten operational amplifiers, U1230 comprise the drivers for the bar graph display. The analog signal from the dB converter is applied to the negative inputs of these amplifiers. The input resistance dividers areselected at a time is operating in the linear region. There is approximately 2.5 dB between each segment, with a slight overlap from one segment to the next.

U1201D and 01201. This digit displays blank. 1

DS1020,

DS1022. Pin

U1111 is high when aoisrequired and lowwhen a 1 is

OS1022. The minus signto the

Q1210 prevents the minus sign from il-

U1030A, B, U1130 and

sothat only one operational amplifier

Display Board

6

The four LED digit display modules and the sign

module are illuminated by lowering the cathode voltages. The display module anodes and the state operated from

Pins 11 through 20 of DS1010, the bar graph display.

are connected to -5 V. Pins 1 through 10 are driven by operational amplifiers in conformance with the signal strength.

t

5 V.

LEDs are

anlog

is

Logic Circuitry

6

V

Reference

A

6 V reference voltage to the

generator,

VR1406. controls the gain of the input stage and distortion

and

The dvm section accepts the dc voltage from the dB

converter or directly from the ac to dc converter and drives the digital display. The dvm input is proportional to the input signal voltage, the percent distortion or the log (dB)

of the selected function. An with display drivers. segments in LED display. Overrangeindication issupplied

internally in

correct full scale reading is provided by

external components support the internal

U1111.

0

dB

converter, offset

dBr section, and dvm is provided by U1313A

LSI

analog todigital converter

U1111, drives the respective

U1111. Reference voltage adjustment for the

R1218. Other

operation of

Scans

by

ARTEK

The input sianals to the logic section come from the front the distortion amplifier level detector. The logic circuitry

amplifier, the dB offset generator, location of the decimal points and the function annunicator LEDs.

Schematic 10 shows the logic switching circuitry.

On schematic 11 a presettable up-down counter, U1031, controls and gain of theinput stage. In the manual ranges, the preset inputs are enabled by S1521-4. The proper input level range signals are supplied by

2,

and 3. In the auto range position, the counter accepts clock inputs from level comparators signals pass from U1011, a bcd to decimal decoder, to drive theinput stage gain control lines.

MEDU

switches, the

-

@

U1031 to U1011. They are decoded in

@

inp$ stage level detector, and

@

U1221A and B. These

51521-1,

Theory of Operation-AA

501

A dc signal, proportional to the input signal amplitude appears at pin 4 of and 6 of low when the input signal is higher than the range the input stage is presently in. This low appears at pin 10 of U1031 which causes the binary up-down counter tocount down. If the input attenuator is intheleast sensitive range,

a high exists on pin 1 of of illuminated. Pin 1 of lower than the input attenuator range. Pin 6 of high in the most sensitive range. The up-down counter counts only when pin 5 is low. This occurs when the input

signal level is higherthantheattenuator is not in the least sensitive position, or when the input signal is lower than the input attenuator is not in the most sensitive range. The over-range and

underrange LEDs are illuminated through Q1509 respectively. When the bases of these transistors are high, through theoutputs of

lights are illuminated. The overrange and underrange lights are also controlled by thedistortion amplifier gain in the level mode. Theseinputs, from

bases of transistors

gain and supplies this information to the distortion amplifier control and to

formatting purposes.

U1221A and Bare such that pin 2 of U1221Agoes

U1032Awhich preventsthe underrange LEDfrom being

U1012A decodes the odd 10 dB steps in theinput stage

U1221A. The bias voltages on pins 5

U1032A. A Iowthen exists on pin3

U1221 B is low when the input signal is

U1032B is

rangeand the unit rangeand theunit

(21508 and

U1032A and U10328, the

U1407, areshown at the

(21509 and (21508.

U1021 for decimal point and offset

4 and 2 provide distortion amplifier gain information. This sum is decoded by

CR1025 and CR1028. These diodes drive U1012B and

U1111 to operate the pV, mV, and Volts annunicator LEDs. The control source for the decimal points is selected by U1013, a 4 bit and/or selector which operates as a multiplexer. In the volts mode, the decimal points are controlled by the decoded decimal information from U1022 and the diodes. In the distortion modes, the decimal points are controlled by the distortion amplifier gain. Gain information from the distortion amplifier appears at pins disabled, and

This illuminates the proper decimal point for all dB

displays.

A 4 bit and/or selector mutliplexer, selects the control source for the dB offset generator. In the level mode, the offset iscontrolled by the sum at the output of is controlled by the distortion amplifier gain.

U1022, and passes through CR1022,

1. 3, 5 and 7. In the dB modes, U1013 is

(21106 is turned on by U1112A or U1112B.

(U1123) operating as a

Ul021. In thedistortion modes U1123

Power Supplies

0

There are three operating voltagesinthe AA 501: t and

-

15 V dc and 4-5 V dc. The k15 V supplies the

operational amplifiers, linear circuitry and CMOS, while

+

V is used for the logic and display circuitry.

Distortion amplifier gain is controlled in a manner similar to the input circuitry gain. are the level comparator and U1132A. U1132B, and

U1132D perform the enable gating function.

The gain control input for the distortion amplifier is selected by mode pin 9 is high, pin 14 is low, and pins 6, 4, and 2 are routed to the outputs. This selects the Input Level Range Switch, modes, pin 14 is high, 9 is low and pins 7, 5 and 3 are connected to the output. The distortion range switches now control the gain.

The signals from and to

U1033. A dc voltage proportional to the output of the

of distortion amplifier connects to pin 11 of operation of for the input stage

up/down counter, U1131, for the distortion amplifier gain.

A three to eight decoder driver, output for the distortion amplifier gain control circuitry.

A binary adder,

.

the gain of the input stage and the distortion amplifier.

7,

Pins

U1033, a 4 bit and/or selector. In the level

S1521, as the gain control input. In the distortion

U1032C control the switching

U1221 and U1132 are identical as described

up/down counter. 'These gates control

U1021, shown on schematic 12, sums

5 3 and 6 provide input stagegain information. Pins

U1221C, and U1221D

U1221D. The

U1124, supplies decimal

+5 V dc supply is derived from the 4-11.5 V dc

The supply in the mainframe. A three terminal votlage regulator, current limiting. Additional overcurrent protection is provided by

The +15 V dc supply is regulated from the +33 V dc

mainframe supply. The reference voltage, against which the regulator output, divided down by compared, is supplied by

reference voltage and divided output are amplified by

U1420B and Q1510. The mainframe

Q1513 form a Darlington series-pass transitor. Frequency compensation for stability is provided by C1510. Current limiting is accomplished by Q1511 which senses the voltage across delivered by the Q1511 turns on. This shunts base drive current from Q1513 lowering the output voltage. Fuse F1610 provides additional protection.

-15

The -15 V is supplied from the -33 V dc in the mainframe. Amplifier +15 V supply with the -15 V through Voltage differences are amplified by U1420A and Q1520.

U1523, provides +5 V and includes built-in

F1621.

Rl425 and R1426 is

VR1401. Errors between the

NPN

R1519. When the current

+I5 volt supply exceeds about 500 mA,

V

Supply

U1420A compares the regulated

R1420 and R1421.

transistor and

R1521 and

Scans

by

ARTEK MEDL4

=>

Theory of Operation-AA

501

The mainframe PNP transistor and 01522 form a Darlington series-pass transistor. Frequency compensa-

tion for stability is provided by

limiting is accomplished by 01521 which senses the

current through

-15 volt supply exceeds about 500 This shunts base drive current away from lowers the output voltage of the power supply. Fuse provides additional protection.

Im

option

The IM analyzer is block diagramed in Fig. 3-3. In the difference frequency distortion mode (CCIF) the analyzer is a

9

pole Butterworth low pass filter at 1.1 kHz. Two poles of this filter are provided by components. The CCIF signal then passes to the level sensor composed of 01231, ding on the position of jumper low frequency components at the anode of multiplexer U1240 selects the SMPTE signal at pin 2 or the CCIF signal at pin 3. (61.1 kHz) is present at theanodeof CR1325, Q1231 turns

If

the jumper is in the automatic position, the collector

on. of

U1231 goes low. This lowers pins

and connects pin2to pin 14, theoutput. In theCCIFmode,

R1526. When the current delivered by the

@

R1520 and C1413. Current

mA, 01521 turns on.

(21522 and

U1310B and associated

CR1325 and C1331. Depen-

PI 131 and theamplitudeof

If

1 V of low frequency signal

9,

10, and 11 of U1240

F1620

CR135,

there is little power below 1.1 kHz. Under theseconditions

01231 is off, and pin 3 is connected to pin 14 of

The output of U1240 feeds buffer U1230B. The signals then pass through the remaining pass filter, comprised of U1230A, U1130A and U1130B, to the distortion amplifier.

In the SMPTE modes, the input signal passes through poles of a 2 kHz high pass filter. This filter is composed of U1310A, U1215A and U1215B. The signal is full-wave rectified by controlled amplifier signal amplitude of 3.6 V dc difference between this signal and a dc reference voltage. The current through the LED in gain control resistor U1100 maintains the gain of U1115B so that the output signal is at 3.6 Vdc. The rectified signal passes through a 30 Hz two pole high pass filter comprised of C1012, R1012 and R1013 to the input of U111OB. This amplifier, along with R1112, forms the first two poles of the 1.1 kHz low pass

filter. Pin

From this point, the signal is processed exactly the same

as the CCIF signal.

U1115A and applied to the input of a voltage

U1115B. To maintain a constant

C1023, C1024, C1025, R1111 and

7

of U111OB connects to multiplexer U1240.

7

poles of the 1.1 kHz low

U111OA integrates the

U1240.

C1111.

7

Input

Tpoles of a

2

kHz

high

pass fllter

U1310A U1215A & B

1.1

*

pole pass filter U1310B

HZ

tow

Level

sensor 01231

Rectifier

U1115A

Electronic

sw~tch SMPTE

U 1240

D

A

filter U1230, U1130A

Voltage controlled

amplifier.

Control element is Amplifier is

U1115B.

2

poles of a

9

pole

1.1 low pass filter UlllOB

HZ

.

&

B

U1100.

Output

*

+5

v

I

-

SMPTE Cal

2958-

12

Fig.

3-3.

Intermodulation distortion option block diagram.

CALIBRATION

PERFORMANCE CHECK PROCEDURE

Section

4-AA

501

Introduction

This procedure checks the Electrical Performance Requirements as listed in the Specification section in this manual. Perform the internal adjustment procedure if the

instrument fails

not correct the discrepancy, circuit troubleshooting is

indicated. Also, use this procedure to determine tibility of performance in an incoming inspection facility.

For convenience, many steps in this procedure check the

performance of this instrument at only one value in the specified performance range. Any value within the specified range, within appropriate limits, may be sub-

---

Low distortion sinewave oscillator with

Description

IM test signal

tomeet thesechecks. If recalibration does

accep-

SUGGESTED TEST EQUIPMENT

Minimum

1

<0.0008°/o THD 20 Hz

to 20 kHz;

10 Hz to 20 kHz and 20 kHz to 50 kHz;

<0.0032% 50 kHz to

100 kHz. 60

rms, 10 Hz to 100 kHz.

Requirements

<0.0018%,

mV to 36 V

stituted. The performance check may be done at any

ambient temperature between 0° C and

Test Equipment Required

The test equipment listed in Table4-1, or equivalent, is suggested to perform the performance check and the adjustment procedure.

Exercise caution as dangerous voltages may be

encountered in some of the following steps.

Table

4-1

Performance Adjustment

Check

I

6,

7,

8,

9,

10, 11.

11A, 12, 13, 14

1

+50°

Procedure Recommended

1

Equipment

i

9,

8,

10, 11, 11A

TEKTRONIX SG 505

C.

Sinewave oscillator Sinewave 600 /IV to 4, 6,

v

(2 required for 35

alternate Step

Ac voltage calibrator

Dv m

Counter

Bnc male to dual binding post adapter

cia

11A) Frequency 20 Hz to

1

I

(

I

rms

>300 kHz.

100 ,uV to 180 V 10 Hz to 100 kHz

lm~to2~ 12, 13, 14

60 Hz to 84 kHz

@

0.9 V

12

1, 2,

I

Scans

by

ARTEK

9,

10, 11,

5,

13, 14, 15

MEDL4

=>

1

I

1

I

9

1 1 A

I

TEKTRONIXSG 502

5200A and

Fluke

1

TEKTRONIX DM 505 TEKTRONIX DC 504

I

4-

1

Table

4-1

(cont)

Description

50

fl

coaxial cable with bnc connectors, 2 ea.

(3 required

for alternate

Step 11

Bnc female to dual banana adapter

Bnc T-adapter (2 ea. required for alternate Step 11

Banana to alligator

test leads to voltage

calibrator

18" banana test leads

A)

1 1

i

1

I

1

Minimum

Requirements Step

1

I

1

I I

I

Performance

Check

I

Adjustment

1

Procedure Recommended

Step

9 1 1 A

1

Tektronix Part

NO. 012-0057-01

Tektronix Part NO. 103-0090-00

(

Tektronix Part

1

No. 103-0030-00

Tektronix Part

NOS. 01 2-001 4-00 (black) and 012-001 5-00 (red), 30"

Tektronix Part

NOS. 01 2-0039-00 (black) and 012-0031-00 (red)

Equipment

6"

banana to banana

patch cord 1

kn resistor

100

kn resistor

Shorting plug

1, 2

Tektronix Part

NO. 012-0024-00

1

Tektronix Part

1

No. 321-0193-00

Tektronix Part

I

NO. 321-0385-04 Tektronix Part

Scans

by

ARTEK

MEDU

*

Cali bration-AA

501

List

of

Check and Adjustment Steps

Performance Check Steps

1. Check Input Impedance

2. Check Common Mode Rejection

3. Check Level Function Accuracy

4. Check Bandwidth

5.

Check Residual Noise Check Total Harmonic Distortion Accuracy

6.

7.

Check Residual Total Harmonic Distortion

Noise

8.

Check Residual Intermodulation Distortion in the SMPTE/DIN Mode (Option 01 only)

9.

Check Residual Intermodulation Distortion in the

CClF Difference Tone Test Mode (Option 01 only)

10. Check IM Distortion Accuracy, SMPTE Test (Option 01 only)

11. Check Tone Test (Option 01

11A. Check IM Distortion Accuracy, CClF Difference

Tone Test (alternate procedure, omit performed, Option 01 only)

12.

Check Filter Accuracy

13. Check INPUT MONITOR

IM Distortion Accuracy, CCIF Difference

on1 y)

if

step 11 is

14. Check FUNCTION OUTPUT

15. Check AUXILIARY INPUT

Adjustment Procedure Steps

1. Adjust Dist Amp Offset

2. Adjust Rms and Avg Zero

3. Adjust Volts and Avg Cal

4. Adjust Attn Comp Adjust 0 dB Adj, -20 dB Adj and Input Zero

+

5.

6.

Adjust Offset Gain

7.

Adjust dBr Zero

8.

Adjust Null, Freq Trim and 3 H Null

9.

Adjust Dist Cal

10. Adjust SMPTE Cal (Option 01 only)

11. Adjust Diff Freq Cal (Option 01 only) 11A. Check IM Distortion Accuracy, CClF Difference

Tone Test (alternate procedure, omit performed, Option 01 only)

The

AA

501

measurement response. Unless specifically noted all performance checks may be performed using either response.

if

step 11 is

NOTE

has selectable average or true rms

Scans

by

ARTEK

MEDLQ

*

PERFORMANCE CHECK SUMMARY SHEET

This sheet may be duplicated and used as a short form performance check procedure. Perform the check and record the reading in the "Measured" column. Compare the reading with the upper and lower limits. After maintenance or adjustment again perform the procedure and compare the readings.

___

Date

Serial Number Tested by

Description Minimum Measured Maximum

I

Scorn

by

ARTEK

MEDL4

1.

Check lnput Impedance

a. Connect the ac voltage calibrator to the input

terminals of the AA 501 as shown in Fig.

4-1. Connect the

black clip lead to the low terminal and the red clip lead to

the high terminal of the voltage calibrator.

b. Make certain the FUNCTION LEVEL and VOLTS

pushbuttons are pressed. All other

c. Set the INPUT LEVEL RANGE switch to the

pushbuttons out.

2

position.

V

h. Reverse the connector at the INPUT terminals of the

AA 501.

i. CHECK-that the reading is between 0.891 and

0.909.

j.

Remove these connections from the front panel

INPUT connector for the next step.

2.

Check Common Mode Rejection

a. Set the acvoltagecalibrator for an output frequency

of 50 Hz.

d. Set the ac voltage calibrator to any frequency from

400 Hz to 1 kHz.

e. Set the ac voltage calibrator amplitude for an

AA 501 display reading of 1.800 V.

f. Move the red clip lead from the red binding post to

the free end of the 100

kn resistor.

g. CHECK-that the display reads between 0.891 and

0.909.

b. Connect the test equipment as shown in Fig.

c. Press the FUNCTION LEVEL and VOLTS

pushbut-

tons. All other pushbuttons out.

d. Refer to Table

4-2.

e. CHECK-that the dvm reads according tothetable

for the listed input conditions.

f. Remove these connections for the next step.

4-2.

-

Patch

cord

Bnc male

dual bindi

post adap

Bnc female to dual banana adapter

-

f

to voltage calibrator

Fig.

4-1.

Check step

Scans

1.

Input impedance.

by

ARTEKMEDCQ

2958-14

=r

Cali bration-AA

501

Shorting

bar

Test leads to dual

voltage calibrator binding

Table

INPUT

4-2

COMMON MODE REJECTION CHECK

INPUT LEVEL

RANGE

200 pV

2 rnV

20 rnV

200 rnV

600 rnV

2

V

6

V

20 V

60 V

200 V

Input Voltage

@

50 Hz

50 mV 50 mV 50 rnV

0.1 V

0.3 V

1

V

3 V

10 V

30 V

100 V

AA

501

FUNCTION

OUTPUT

+

-

Bnc male

adapter

Fig. 4-2. Check step 2. Common mode rejection.

SG 502

OUTPUT

post

SG 505

OUTPUT

•

INPUT

)a

LEVEL FUNCTION ACCURACY

1

Maximum

dvm Reading

1.580 V

158

mV

15.8 rnV

3.2 rnV

1

rnV

3.2 rnV

1.0 rnV

3.2 mV

1.0 rnV

3.2 rnV

Calibrator I RANGE

INPUT LEVEL Limits of Reading

DVM

Table

4-3

1

20 Hz-20 kHz,

1

f

2%

1

10 Hz-100 kHz,

I

f4%

3.

Check Level Function Accuracy

a. Connect the test equipment as shown in Fig.

b. Set the voltage output of the ac calibrator and the

INPUT

tons.

LEVEL RANGE

c. Press the FUNCTION

All

other pushbuttons out.

switch as listed in Table

LEVEL

and

VOLTS

pushbut-

4-6

4-3.

Scans

by

ARTEK

I

The specified accuracy of commercially available ac

calibrators is not adequate to directly check performance at 100 signal, connect a of the

AA

501 and a 100

MEDLQ

=>

1

p

V.

1

KSZ

94.0 to 104.0 above 50

NOTE

To obtain an accurate 100

0.1 % resistor across the input

Kf2

0.1% resistor in series

AA

REV

501

p

JUN

kHz.

V

1981

AA

501

SG 502

SG 505

DVM

INPUT

Patch

cord

-

To voltage calibrator

+

Fig.

4-3.

Check

step

with the ac calibrator. These connections are similar to the test setups shown in Fig.

lead from the calibrator is connected to the free end of

Kf2

the 100 age divider (including AA 501 input impedance effects) setting the ac calibrator for 10.20 mV will cause the required 100 p V at the AA 50 1 input terminals.

resistor. As this comprises a 102 to 1 volt-

4-

1 except that the

+

OUTPUT

3.

OUTPUT

.

Level function accuracy.

.

I. CHECK-that the display reads within

the calculated result.

m. Repeat parts e through k with the output frequency

of the generator set to any frequency between

100

kHz.

n. CHECK-that the dBm readings arewithin

INPUT

0.

f0.3

10

Hz and

k0.5

dB of

dB

d. CHECK-that the display reads within the limits as

shown

any frequency from

position.

600

--0.3

3100

RANGE position.

using the formula

REV

in

Table

4-2.

20

0.7746

+0.3

kHz.

e. Set the output of the voltage calibrator to

20

Hz to

20

kHz.

f.

Set the INPUT LEVEL RANGE switch to the 2 V

g. Make certain the

R

pushbuttons are pressed.

h. CHECK-that the display reads within

dBm.

i. Set the input voltage amplitude to any voltage

pV at any frequency from

j.

Set the INPUT LEVEL RANGE switch to the AUTO

k. Calculate the dBm equivalent of the input voltage

dBm

=

20

x

logrn

JUN

1981

FUNC'TION LEVEL and dBm

20

Hz to

Input

V

-

0.7746

Vat

dBm to

o. Remove all connections from the front panel for the

4-

Check

a. Set the INPUT LEVEL RANGE switch to the AUTO

RANGE position.

b. Press the FUNCTION LEVEL and VOLTS pushbut-

tons,

c. Connect the SG

d. Set the SG

convenient amplitude within

Such

e. Press the dB RATIO pushbutton and push and

release the PUSH TO SET

All

other

V.

Bandwidth

pushbuttons

502

output frequency to 1 kHz at any

out,

502

as shown in Fig.

theinput range of the AA

0

dB

REF

pushbutton.

4-4.

501

4-7

Scans

by

ARTEK

MEDL4

=>

AA

501 SG 502 SG 505

DVM

INPUT

Dual banana to bnc female adapter

f. Increase the frequency of the

reads

-3

dB.

g. CHECK-that the frequency of the SG 502 is

2300 kHz.

1

I

Coaxial cable

Fig.

SG

502 until the display

4-4.

OUTPUT

T

I

Check step

OUTPUT

4.

Bandwidth.

f. CHECK-that the display reads

g. Remove the male bnc to dual binding post adapter

1

and

6.

Check Total Harmonic Distortion Accuracy

INPUT

.

..

kfl resistor for the next step.

G1.5 pV.

h.

Remove all connections from the front panel for the

next step.

5.

Check Residual Noise

a. Connect the test equipment as shown in Fig. 4-5.

b. Set the INPUT LEVEL RANGE to the 200 pV or the AUTO RANGE position. Press the 80 kHz LO PASS, 400 Hz HI PASS, FUNCTION LEVEL, VOLTS and

RESPONSE pushbuttons. All other pushbuttons out.

c. CHECK-that the display reads G3.0 pV

d. Release the 80 kHz LO PASS and 400 Hz HI PASS

pushbuttons.

e. Press the 'A' weighting pushbutton.

4-8

a. Connect the test equipment as shown in Fig. 4-6.

b. Make certain the SG 505 output is off

c. Set the SG 505 output to any frequency from 20 Hz

to 20 kHz.

d. Set the SG 505 output to the floating mode.

e. Set the SG 502 exactly to any harmonic frequency

from 40 Hz to 100 kHz.

f. Set the INPUT LEVEL RANGE switch to the 2

position.

g. Press the FUNCTION LEVEL and VOLTS

tons. All other pushbuttons out.

REV

pushbut-

JUN

mV

1981

Scans

by

ARTEK

MEN

=>

AA

501

SG

502

SG

505

DVM

Cali bration-AA

501

INPUT

.GND

Bnc female to dual banana

Bnc male to adapter dual binding post adapter

f

kn

Fig. 4-5. Check step 5. Residual noise.

OUTPUT

INPUT

0.

Fig. 4-6. Check steps 6,

residual IM distortion.

(73

Bnc female to dual banana adapter

9,

10,

11

l

NPUT

(

Bnc T connector

I

and adjustment steps

Scans

I

1

Coaxial cables

9,

10, and 11. Total harmonic SMPTE and CClF distortlon and CClF

by

ARTEK

MEDLQ

=>

h. Set the output amplitude of the SG

reading of

i. Change the INPUT LEVEL RANGE switch to the

200

j.

k. Adjust the output amplitude of the SG

display reading of

,600 (600

mV position.

Turn on the SG

pV).

505

output.

60.0 (60

mV).

502

for a display

505

for a

q. Remove all connections for the next step.

7.

Check Residual Total Harmonic Distortion

Noise

NOTE

Care must be taken to minimize common mode signals appearing with signals to be analyzed. The AA

501

and

SG

505,

used in this step, must be

properly installed in the same power module.

+

I. Press the FUNCTION THD+N pushbutton.

m. CHECK-that the display reads from

n. Change the SG

10

Hz to

100

kHz.

o. Change the SG

SG

505

the

p. CHECK-that the display reads within

between

505

output to any frequency from

502

to any harmonic frequency of

20

Hz and

300

kHz.

.9

.7

to

l.lO/o.

to

l.lO/o.

a. Connect the test equipment as shown in Fig.

b. Press the FUNCTION LEVEL and VOLTS pushbut-

tons,

~11

other pushbuttons

c. Set the INPUT LEVEL RANGE switch to the AUTO

RANGE position.

d. Set the SG

frequency from

e. Press the THD+N,

and VOLTS pushbuttons. All other pushbuttons out.

2

1

SG

505

(

20

DVM

505

Hz to

out.

output amplitude

20

kHz and float the output.

80

kHz LO PASS, AUTO RANGE,

2250

4-7.

mV, the

Patch cord to ground

to dual banana

adapter

Fig.

4-7.

Check step

Scans

Coaxial cable

7.

by

ARTEK

Residual

MEDLQ

THD-kN.

-

f. CHECK-that the display reads

g.

Press the RESPONSE pushbutton.

h. CHECK-that the display reads

i.

Release the

80

kHz LO PASS pushbutton.

40.0025%.

<0.0032%.

c. Make certain the FUNCTION LEVEL, VOLTS, and AUTO RANGE pushbuttons are pressed. All other pushbuttons out.

505

d. Set the output of the SG

the intermodulation test signal set to

8

kHz and the intermodulation test signal to

the Maintenance section for jumper selection information.

to 7 kHz and turn on

60

Hz or the output to

250

Hz. See

j.

Change the output frequency of the SG

frequency from

k. CHECK-that the display reads

I.

Change the output frequency of the SG

frequency from

m. CHECK-that the display reads

n.

Leave this setup for the next step.

8.

Check Residual Intermodulation Distortion in the

SMPTE/DIN Mode (Option

a. Connect the test equipment as shown in Fig.

b. Make certain the INPUT

the AUTO RANGE

-

10

Hz to

50

kHz.

<.0071°/~.

50

kHz to

100

kHz.

<O.OIOO/o.

01

only)

LEVEL

-

posit~on. off.

-

RANGE switch is in

-

505

to any

4-8.

e. Set the output amplitude of the

2250

mV.

f. Press the IMD pushbutton.

g.

CHECK-that the display reads

h. Remove these connections for the next step.

9.

Check Residual lntermodulation Distortion in the

CClF Difference Tone Test Mode (Option

a. Connect the test equipment as shown in Fig.

b. Turn the SG

c. Make certain the

505

output off

60

Hz or

SG

505

to any value

<0.0025°/~.

01

250

Hz IM test signal is

only)

4-6.

REV

JUN

1981

Fig.

AA

501

INPUT

.GND

Bnc female to dual banana

adapter

4-8.

Check step 8 and adjustment step

.

&lns

SG 502

OUTPUT

Coaxial cable

8.

by

ARTEK

SG 505

OUTPUT

SMPTE

MEDL4

DVM

INPUT

. .

2958-21

resldual intermodulation distortion.

r>

d. Set the output frequency of the SG 502 to 14 kHz.

g. Press the 400 Hz HI PASS pushbutton.

e. Set the INPUT LEVEL RANGE to the AUTO RANGE

position.

f. Press the FUNCTION LEVEL, VOLTS, AUTO RANGE and RESPONSE RMS pushbuttons. All other pushbuttons out.

Set the output amplitude of the SG 502 to any

g.

voltage above 177 on the AA 501 display.

h. Turn the SG 505 output on. I. Press the IMD pushbutton and

i.

Set the output frequency of the SG 505 to 15 kHz

and the output amplitude so the AA 501 display reads m. CHECK-that the display reading is 9.00% to

1.414 times the amplitude noted in step g.

j.

Press the IMD pushbutton. n. Leave this setup for the next step.

mV. Note the output amplitude as read

h. Note the AA 501 display reading.

I.

Turn off the

j.

Adjust the SG 502 output frequency to 7.2 kHz with an output amplitude of exactly step h.

k. Turn on the SG 505 output.

PASS pushbutton.

11.00%.

SG

505 output.

10%of the reading noted in

releasethe400 Hz HI

11. Check IM Distortion Accuracy, CClF Difference

k. CHECK-that the display reads <0.0025%.

Tone Test (Option 01 only)

I. Leave these connections for the next step.

10. Check IM Distortion Accuracy, SMPTE Test (Option 01 only)

a. Connect the test equipment as shown in Fig. 4-6.

b. Set the Option 01 SG 505 for a 60 Hz IM test signal.

Float the output.

c. Adjust the SG 502 output level for maximum

attenuation.

d. Set the INPUT LEVEL RANGE switch to the AUTO

RANGE position.

e. Press the VOLTS, FUNCTION LEVEL, AUTO

RANGE, and RESPONSE pushbuttons. All other tons out.

pushbut-

NOTE

CClF distortion is referenced to the level of either component of two equal amplitude test tones. The following procedure simplifies test instrumentation requirements and minimizes sources of potential error by omitting one of the two test tones. Because only one test tone is present the averagingresponse of the internal automatic set-level circuitry will cause readings to be high by a factor of exactly

(4i7r).

step two equal amplitude test tones. However, it requires an additional extra cabling.

a. Connect the test equipment as shown in Fig.

b. Set the INPUT LEVEL RANGE switch to the AUTO

RANGE position.

c. Make certain the VOLTS, LEVEL, AUTO RANGE,

and RESPONSE pushbuttons are in. All other tons out.

If desired, the alternate procedure given in

11A

may be followed. This procedure provides

SG

505

or equivalent oscillator and

1.273

pushbut-

4-6.

f. Adjust the SG 505 for an output frequency of and a 60 on the AA 501

mV or greater composite test signal level as read

d~splay.

7

kHz

Scans

d. Turn off the SG 505 output. Makecertain the

signal is off. Float the output.

by

ARTEK

MEDU

=>

IM test

Cali bration-AA 501

e. Adjust the SG 502 for a 250 Hz, 6.00 mV output

signal as indicated on the AA 501 display.

f. Press the 400 Hz HI PASS pushbutton.

g. Turn on the SG 505 output and adjust for an output

frequency of 14 kHz, and a 60

mVoutput signal amplitude

as displayed on the AA 501.

h. Press

theIMD pushbutton and releasethe400 Hz HI

PASS pushbutton.

i.

CHECK-that the display reads from 11.46% to

14.00%.

j.

Remove all connections for the next step.

11A. Check

IM

Distortion Accuracy, CClF

Difference Tone Test (alternate procedure, omit

step 11 is performed, Option 01 only)

a. Connect the test equipment as shown in Fig. 4-9.

if

c. Make certain the VOLTS, LEVEL, AUTO RANGE,

and RESPONSE pushbuttons are in. All other

pushbut-

tons out.

d. Turn off both SG

505

outputs. Make certain both

outputs are floating.

e. Adjust the SG 502 for a 250 Hz, 4.24

mV output

signal as read on the AA 501 display.

f. Press the 400 Hz HI PASS pushbutton.

g. Turn on one SG 505 output and adjust this SG 505

for an output frequency of 14 kHz, with an amplitude of

mV as displayed on the AA 501.

42.4

h. Turn off this SG 505 output and turn on the

remaining SG 505 output.

i. Adjust this SG 505 output for a frequency of 15 kHz,

with an amplitude of 42.4

mV as displayed on the AA 501.

b. Set the INPUT LEVEL RANGE switch to the AUTO

RANGE position.

L

AA

501

INPUT

T

1G.D

Bnc female

banana adapter

connectors

I

SG 502

OUTPUT

T

j.

Turn on the first SG 505 output and note that the

composite amplitude is approximately 60

SG 505

OUTPUT

DVM

INPUT

**

T

I

Coaxial cables

SG505

9

mV.

4-9. Check step 11A andadjustment step 11A. Alternate CClF IM distortion accuracy.

Fig.

Scans

by

ARTEK

MEDIA

=>

Cali bration-AA

501

k. Press the

IMD

pushbutton and releasethe400 Hz HI

g. Lower the frequency of the SG 505 until the display

PASS pushbutton. reads exactly -3.0 dB.

I.

CHECK-that the display reads from 9.00% to h. CHECK-that the frequency counter reading is

.0O0/o.

1 1

m.

Remove all connections for the next step.

12.

Check Filter Accuracy

a.

Connect the test equipment as shown in Fig. 4-10.

b. Adjust the counter to read the input frequency.

c. Set the INPUT LEVEL RANGE switch to the AUTO

RANGE position.

d. Press the FUNCTION LEVEL, 400 Hz HI PASS and

VOLTS pushbuttons. All other pushbuttons out. Set the

from 380 Hz to 420 Hz.

i.

Lower the output frequency of the SG 505 to 60 Hz.

j.

CHECK-that the AA 501 display reads -40 dB or

greater.

k. Return the SG 505 frequency to 1 kHz.

I.

Release the 400 Hz HI PASS pushbutton and press

the

reads

kHz

LO

PASS

pushbutton.

m.

Raise the frequency of the SG 505 until the display

-3.0

dB,

output frequency of the SG 505 to 1 kHz and the output amplitude to

1

V.

n. CHECK-that the counter reads from 28.5 kHz to

31.5 kHz.

e. Press the dB RATIO pushbutton.

o. Release the 30 kHz LO PASS pushbutton and press

f. Press and release the PUSH TO SET

0 dB REF

the 80 kHz LO PASS pushbutton.

pushbutton. Note that the display goes to all zeros.

Bnc female to dual banana adapter

AA

501

INPUT INPUT

MONITOR

.GND

Fig. 4-10. Check step 12. Filter accuracy.

'

Scans

SG 502

OUTPUT

by

ARTEK

SG 505

OUTPUT INPUT

Coaxial cables

MEDL~

DVM

3,

COUNTER

T

2958-23

Cali bration-AA

501

p. Raise the frequency of the SG 505 until the AA 501

display reads -3.0 dB.

q.

CHECK-that the oscillator frequency is from

76

kHz to 84 kHz. noted in step e within k 2.5%.

f. Connect a 1

INPUT MONITOR.

g.

CHECK-that the dvm reading is one half of the value

kn

0.1% resistor in parallel with the

r. Leave these connections for the next step. h. Leave the connection tothe INPUTterminalsfor the

next step.

13.

Check INPUT MONITOR

a.

Connect the test equipment as shown in Fig. 4-1 1.

14.

Check FUNCTION OUTPUT

a. Connect the test equipment as shown in Fig. 4-12.

b.

Set the output amplitude of the oscillator to any

b.

voltage

250 mV within the specified range of the instru-

Set the INPUT LEVEL RANGE switch to the 2 V

ment. position.

c. Set the output frequency to 1 kHz.

c. Press the FUNCTION LEVEL and VOLTS

pushbut-

tons.

d. Set the INPUT LEVEL RANGE switch to the AUTO

RANGE position.

d. Adjust the output amplitude of the SG 505 so that

the AA 501 display reads 1.000 V.

e. CHECK-that the output voltage is from

.9 V to

1.1 V rms. e. CHECK-that the dvm reads from 0.95 to 1.05 V rms.

AA

501

INPUT INPUT

MONITOR

SG 502

OUTPUT

SG 505

OUTPUT

DVM

INPUT

"

T

Bnc

female

to dual banana adapter

binding post adapter

Test leads

Coaxial cable

REV

JUN

1981

Fig. 4-11. Check step 13. Input monitor.

Scans

by

ARTEK MEDIA

=>

2958-24

Fig.

4-12.

Check step

14.

Function output.

f. Connect a 1 kQ 0.1% resistor in parallel with the

FUNCTION OUTPUT.

g.

CHECK-that the dvm reading is one half of the

value noted in step f within

h. Remove these connections for the next step.

15.

Check

a. Connect the test equipment as shown in Fig. 4-13.

b.

c. Adjust the voltage of the calibrator so that the

display reads 1.000

AUXILIARY INPUT

Press the EXT FILTER pushbutton.

V.

f

2.5%.

d. CHECK-that the voltage of the calibrator is from

0.97 Vto 1.03 V.

e. Connect a 100

AUXl I-IARY INPUT.

f.

CHECK-that the display reads from 0.488 V to

0.513 V.

g. Remove all connections.

This completes the Performance Check procedure.

kQ

0.1% resistor in series with the

Scans

by

ARTEK

MEDCQ

=>

Cali bratlon-AA

501

AA 501

INPUT AUXILIARY

.GND

LLe

Bnc male lo dual binding

post adapter

INPUT

'

Flg. 4-13. Check step 15. Auxiliary input.

SG 502

OUTPUT

-

1

Test leads to voltage calibrator

100

SG 505

OUTPUT

kn

•

INPUT

em

DVM

Scans

by

ARTEK

MEDM

=>

Cali bration-AA

501

INTERNAL ADJUSTMENT PROCEDURE

l

nfroduction

This procedure should be performed if the instrument fails to meet the performance requirements of the electrical characteristics listed in the Specification section of this manual. To insurecontinued instrument accuracy it is recommended that adjustment be performed every 1000 hours of operation or every six to twelve months infrequently. Adjustment is also recommended following

instrument repair or modification. Adjustments must be

made at an ambient temperature of

+20°C to +30°C.

Services Available

Tektronix, Inc. provides complete instrument repair and adjustment at factory service center. Contact your local Tektronix Field Office or representative for further information.

local field service centers and at the

if

used

If other test equipment is substituted, the calibration setup may need to be altered to meet the requirements of the equipment used.

Adjustment Access

Use an extender cable (Tektronix Part No. 067-0645-

02) to operate the plug-in outside the power module. Remove t he top and both side covers oft he AA 501 to gain access to the adjustments. All adjustments on the Input board are accessed from the

Adjustment Location illustration in the pullout pages at the back of this manual.

1.

Adjust Amp Offset

a. Press the FUNCTION LEVEL and VOLTS

tons.

topof theinstrument. See the

pushbut-

Test

Equipment Required

The test equipment (or equivalent) listed inTable4-1 is required for adjustment of the AA 501. Specifications given for the test equipment are the minimum necessary

for accurate adjustment. All test equipment is assumed to

be correctly calibrated and operating within specification. shorting bar. See Fig. 4-14.

Shorting

bar

b. Set the INPUT LEVEL RANGE switch tothe200

position.

c.

Short the INPUT terminals with the dual banana

pV

Fig.

4-14.

Adjustment test setup for steps 1 and

scam

by

ARTEK

MEDL4

2.

=a

Cali bration-AA

d.

Connect the test dvm set to read 0.0 mV to TP1310.

ADJUST-R1320, Dist Amp Offset, for 0.0 mV

e.

+I

mV on the dvm.

f. Leave the shorting bar for the next step.

h. Remove the shorting bar for the next step.

3.

Adjust Volts and Avg Cal

a. Make certain the FUNCTION LEVEL and VOLTS

pushbuttons are pressed.

2.

Adjust Rms and Avg Zero

a. Make certain the INPUT is shorted. See Fig. 4-14.

b. Make certain the INPUT LEVEL RANGE is set to the

2 V position.

b. Make certain the FUNCTION LEVEL and VOLTS

pushbuttons are pressed. c. Press the RESPONSE pushbutton.

501

c. Set the INPUT LEVEL RANGE switch to the 2 V

position.

d. Press the RESPONSE pushbutton.

d. Apply a 1 kHz

the ac calibrator to the INPUT terminals. See Fig. 4-15.

ADJUST-R1218, Volts Cal, for a display reading of

e.

0.001,

1.800

sinewave of exactly 1.800 V rms from

e. ADJUST-R1201, Rms Zero, for a reading of exactly

.000 on the display. f. Release the RESPONSE pushbutton.

f. Release the RESPONSE pushbutton.

ADJUST-R1301, Avg Cal, for a display reading of

g.

1.800

kO.001.

g. ADJUST-R1300, Avg Zero, for a display reading of

exactlv

.000. h. Leave this setup for the next step.

AA

501 SG 502

SG

505

DVM

REV

JUN

1981

INPUT

1

Test leads toac voltagecalibrator

4-15.

Fig.

Adjustment test setup for steps

OUTPUT OUTPUT

Scam

by

ARTEK

INPUT

a

a.

MEDLA

3,

4,

5,

6,

and

7.

Cali

bration-AA

4.

Adjust Attn Cornp

501

i. Reduce the calibrator amplitude to 7.746 mV rms.

a. Make certain the

pushbuttons are pressed. All other pushbuttons out.

b. Make certain the INPUT LEVEL RANGE is set tothe

2 V position.

c. Apply a 1.00 V 50 kHz

calibrator to the INPUT terminals. See Fig. 4-15.

d. Note the display reading.

e. Select the

f.

Set the ac voltage calibrator for a 10.00 V 50 kHz

si newave. 6 V position.

g. ADJUST-C1400, Attn Comp, for a display reading exactly ten times the reading noted in step d. Use an insulated low capacitance screwdriver fort his adjustment.

20 V INPUT LEVEL RANGE position.

FLlNCTlON LEVEL and VOLTS

sinewave from the ac voltage

j.

ADJUST-R1245, lnput Zero, for a reading of -40.0

.o.

2.

k. INTERACTION-Repeat steps e through j until

readings are correct.

I. Leave these connections for the next step.

6.

Adjust Offset Gain

a. Use the same control settings as in the previous step

except change the INPUT LEVEL RANGE switch to the

b. Apply a 0.7746 calibrator tothe FRONT PANELINPUTterminals. See Fig. 4-15.

V

rms 1 kHz signal from the ac

h. Leave this setup for the next step.

5.

Adjust 0 dB Adj,

a. Make certain the FUNCTION LEVEL pushbutton is

pressed.

b. Press the

c. Make certain the INPUT LEVEL RANGE switch is in

the 2 V position.

d. Press the RESPONSE pushbutton.

e. Apply a 0.7746 V rms 1 kHz signal from the ac

calibrator to the INPUT terminals. See Fig. 4-15.

f.

ADJUST-R1341, 0 dB Adj, for a reading of exactly

00.0.

-20

dB Adj and lnput Zero

dBm 600 pushbutton.

c.

ADJUST-R1246. Offset Gain, for a display reading

of

exactl y 00.0.

d. Leave this setup for the next step.

7.

Adjust dBr Zero

a. Use the same front panel control settings as in the

previous step except press the dB

b. Make certain the output of the ac calibrator is

0.7746 V rms at 1 kHz. See Fig. 4-15.

c. Press and release the PUSH TO SET 0 dB REF

pushbutton.

d. ADJUST-If the display does not read 00.0 adjust R1445, dBr Zero, slight1 y clockwise to correct a - error or counterclockwise for a

+

error.

RATIO pushbutton.

g. Reduce the calibrator amplitude to 77.46

ADJUST-R1501, -20 dB Adj, for a reading of

h.

exact1 y --20.0.

mV rms.

Scans

by

ARTEK

e. INTERACTION-Repeat steps c and d until the

display reads 00.0.

f. Remove all connections for the next step.

MEDIA

=>

8.

Adjust Null,

Freq Trim

and

3 H Null

Call bration-AA

c. Connect the test equipment as shown in Fig. 4-6.

501

NOTE

Although not necessary to perform this step, a dual channel oscilloscope may be of help. Connect the INPUT MONITOR to channel 1 and the FUNCTION

OUTPUT to channel signal. Channel 1 shows the fundamental. and R1100 are adjusted for minimum fundamental at the FUNCTION OUTPUT while minimum 3rd harmonic. 900 Hz.

a. Use the same

vious step except change the INPUT LEVEL RANGE switch to 2 V. Press the 400 Hz HI PASS, THD 30 KHz LO PASS pushbuttons.

b. Connect the test equipment as

c. Set the output frequency of the SG 505 for 500 Hz.

d. Make certain that the output level control on the

SG 505 is at the

0 dBm position (1.55 V rms).

2.

Trigger on the channel 1

RllOl

R1038 is adjusted for

AA501 control settings as for the pre-

+

n, 0.2% and

sho:vn in Fig. 4-8.

on the AA 501. Press the

10.

Float the output.

d. Turn off the SG 505 output.

e. Adjust the SG 502 for an AA 501 display reading of

mV at 7 kHz.

10

f. Turn on the SG 505 output and set the frequency to

g. Adjust the SG 505 output level to 1 V as displayed

THDSN pushbutton.

ADJUST-R1330, Dist Cal, for a reading of 1.000%.

h.

i. Leave these connections for the next step.

Adjust

a. Connect the test equipment as shown in Fig. 4-6.

b. Set the Option 01

SMPTE

Cal

(Option

SG

505 for a 60 Hz IM test signal.

01)

e. ADJUST-R1101, Null Trim, for the lowest display

reading.

f.

ADJUST-R1100, Freq Trim, for the lowest display

reading.

g. Change the SG 505 frequency to 2.5 kHz.

h.

ADJUST-R1038,

reading.

i. INTERACTION-repeat steps

the lowest possible reading.

j.

Disconnect the SG 505 from the AA 501.

9.

Adjust

a. Set the INPUT LEVEL RANGE switch to the AUTO

RANGE position.

Dist

Cal

3

H Null, for the lowest display

c,d,e,f.g and h to obtain

c. Adjust the SG 502 output level for maximum

attenuation.

d. Set the INPUT LEVEL RANGE switch to the AUTO

RANGE position.

e. Press the VOLTS, FUNCTION LEVEL, AUTO RANGE, and RESPONSE pushbuttons. All other tons out.

f. Adjust the SG 505 for an output frequency of and a 60 on the AA 501 display.

mV or greater composite test signal level as read

g. Press the 400 Hz HI PASS pushbutton.

h. Note the AA 501 display reading

i.

Turn off the SG 505 output.

pushbut-

7

kHz

b. Press the FUNCTION LEVEL, VOLTS, and AUTO

RANGE pushbuttons. All other pushbuttons out.

REV

JUN

1981

Scans

j.

Adjust the SG 502 output frequency to 7.2 kHz with

anoutput amplitudeof exactly lO%ofthereadingnotedin

step h.

by

ARTEK

MEDLA

=>

4-2

1

k. Turn on the SG 505 output.

i.

ADJUST-R1421. Diff Freq Cal, for a display reading

of 12.73%.

I. Press the

PASS pushbutton.

m. ADJUST-R1001, SMPTECal, for a display reading lo.OOO/o.

of

n. Leave this setup for the next step.

IMD pushbutton and release the 400 Hz HI

11. Adjust Diff Freq Cal (Option 01)

NOTE

CClF distortion is referenced to the level of either component of two equal amplitude test tones. The following procedure simplifies test instrumentation requirements and minimizes sources of potential error by omitting one of the two test tones. Because only one test tone is present the averaging response of theinternal automaticset-level circuitry will cause

readings to be high by a factor of exactly

(4-rr).

step

two equal amplitude test tones. However, it requires

an additional

extra cabling.

If desired, the alternate procedure given in

11A

may be followed. This procedure provides

SG

505 or equivalent oscillator and

1.273

j.

This completes the AA501 Internal Adjustment

procedure.

11A. Adjust Diff Freq Cal (alternate procedure, omit

if

step 11 is performed, Option 01 only)

a. Connect the test equipment as shown in Fig. 4-9.

b. Set the INPUT LEVEL RANGE switch to the AUTO

RANGE position.

c.

Make certain the VOLTS, LEVEL, 20°/0, and response

pushbuttons are in. All other pushbuttons out.

d. Turn off both SG 505 outputs. Make certain both

outputs are floating.

e. Adjust the SG 502 for a 250 Hz, 4.24

signal as read on the AA 501 display.

mV output

a. Connect the test equipment as shown in Fig.

b. Set the INPUT LEVEL RANGE switch to the AUTO

RANGE position.

c. Make certain the VOLTS, LEVEL,

SPONSE pushbuttons are in. All other pushbuttons out.

d. Turn off the SG 505 output. Make certain the

signal is off. Float the output.

e. Adlust the SG 502 for a 250 Hz, 6.00 mV output

signal as indicated on the AA 501 display.

f.

Press the 400 Hz HI PASS pushbutton.

g. Turn on the SG 505 output and adjust for an output

frequency of 14 kHz, and a 60

as displayed on the AA 501.

mVoutput signal amplitude

20°/0, and RE-

lM test

4-6.

1. Press the 400 Hz HI PASS pushbutton.

g. Turn on one SG 505 output and adjust this SG 505

for an output frequency of 14 kHz, with an amplitude of

42.4

mV as displayed on the AA 501.

h. Turn off this SG 505 output and turn on the

remaining SG 505 output.

i. Adjust this SG 505 output for afrequency of 15 kHz,

with an amplitude of 42.4

j.

Turn on the first SG 505 output and note that the

composite amplitude is approximately 60 mV.

k. Press the IMD pushbutton and

PASS pushbutton.

ADJUST-R1421, Diff Freq Cal, for a display reading

I.

of

10,OOo~o~

mV as displayed on the AA 501.

releasethe400 Hz HI

h.

Press the IMD and release the 400

pushbuttons. procedure.

Hz

HI PASS

m. This completes the AA 501 Internal Adjustment

4-22

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REV

JUN

1981

Section

MAINTENANCE

GENERAL MAINTENANCE INFORMATION

5-AA 501

Static-Sensitive Components

CAUTION

EX2

Static discharge can damage any semiconductor component in this instrument.

This instrument contains electrical components that are susceptible to damage from static discharge. See Table 5-1 for relative susceptibility of various classes of

semiconductors. Static voltages of 1 common in unprotected environments.

Observe the following precautions to avoid damage:

1. Minimize handling of static-sensitive components.

2.

Transport and store static-sensitive components or assemblies in their original containers, on a metal rail, or on conductive foam. Label any package that contains

static-sensitive assemblies or components.

3. Discharge the static voltage from your body by wearing a wrist strap while handling these components. Servicina static-sensitive assemblies or comDonents should be performed only at a static-free work station by qualified service personnel.

4.

Nothing capable of generating or holding a static

charge should be allowed on the work station surface.

5. Keep the component leads shorted together

whenever possible.

kV to 30 kV are

9.

Use a soldering iron that is connected to earth

ground.

10. Use only special antistatic suction type or wicktype

desoldering tools.

Table

5-1

RELATIVE SUSCEPTIBILITY TO

STATIC DISCHARGE DAMAGE

Relative

Semiconductor Classes

MOS or CMOS microcircuits or discretes. or linear microcircuits with MOS

inputs. (Most Sensitive)

ECL Schottky signal diodes schottky High-f requency bipolar transistors

JFETS

Linear microcircuits Low-power Schottky TTL

TTL (Least Sensitive)

a

Voltage equivalent for levels:

=

2

=

3

=

TTL

loo

500

200 to 500 V 5 = 400 to 600 V 8 = 900 V 250 V

=

500

=

600 to 800 V 9 = 1200 V

6

7

Susceptibility

Levels'

2

3

14

5

6

7

8

I

9

=

400 to 1000 V (est.)

(Voltage discharged from a 100 pFcapacitor through a resistance

Of

6.

Pick up components by the body, never by the leads.

7.

Do not slide the components over any surface.

8.

Avoid handling components in areas that have a This instrument should be cleaned as often as floor or work surface covering capable of generating a static charge. the outside of the instrument can be removed with a soft

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100 ohms.)

Cleaning

operating conditions require. Loose dust accumulated on

ARTEK

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*

cloth or small brush. Remove dirt that remains with a soft cloth dampened in not use abrasive cleaners.

To clean the front panel use freon, isopropyl alcohol, or denatured ethyl alcohol. Do not use petroleum based cleansing of cleaner, consult your Tektronix Service Center or

representative.

amild detergent and water solution. Do

agents. Before using any.other type

When ordering replacement parts from Tektronix, Inc.,

include the following information:

1.

Instrument type and option number.

2.

I

nstrument serial number.

3.

A description of the part (if electrical, include

complete circuit number).

4. Tektronix part number.

The best way to clean the interior is to blow off the

accumulated dust with dry, low-velocity air (approximate-

5

Ib/in2) or use a soft brush or cloth dampened with a

ly mild detergent and water solution.

Hold the board so the cleaning residue runs away from

the connectors. Do not scrape or use an eraser to clean the edge connector contacts. Abrasive cleaning can remove the gold plating.

CAUTION

a

Circuit boards and components must be dry before

applying power.

Obtaining Replacement

Electrical and mechanical parts can be obtained through your local Tektronix Field Office or representative. However, it may be possible to obtain many of the standard electronic components from a local commercial source. Before purchasing or ordering a part from a source other than Tektronix, Inc., check the Replaceable

Electrical Parts list for the proper value, rating, tolerance.

and description.

Parts

NOTE

Soldering Techniques

To avoid electric-shock hazard, disconnect the

instrument from the power source before soldering.

The reliability and accuray of this instrument can be maintained only if proper soldering techniques are used when repairing or replacing parts. General soldering techniques which apply to maintenance of any precision electronic equipment should be used when working on this instrument. Use only grade solder. The choice of soldering iron is determined

by the repair to be made.

60/40 rosin-core, electronic

Lx4rA-A

One circuit board

board with a conductive path laminated between the top and bottom board layers. All soldering on this board should be done with extreme care to prevent breaking the connections to this conductive path.

Only experienced maintenance personnel should attempt to repair the Input board. Do not allow solder or solder flux to flow under prinled circuit board switches. The printed circuit board is part the switch contacts; intermittent switch operation can occur if the contacts are contaminated.

in

the AA

507

is a multilayer type

Of

When selecting replacement parts, remember that the physical size and shape of a component may affect its performance in the instrument.

Some parts are manufactured or selected by Tektronix,

Inc., to satisfy particular requirements or are manufac-

tured for Tektronix, Inc., to our specifications. Most of the

mechanical parts used in this instrument have been manufactured by Tektronix, Inc. To determine the manufacturer, refer to the Replaceable Parts list and the Cross Reference index, Mfr. Code Number to Manufac-

turer.

Scans

by

When soldering on circuit boards or small wiring, use

only a

15

watt, pencil type soldring iron. A higher wattage

soldering iron can cause the etched circuit wiring to

separate from the board base material and melt the insulation from small wiring. Always keep the soldering iron tip properly tinned to ensure the best head transferto the solder joint. Apply only enough heat to remove the component or to make a good solder joint. To protect heat sensitive components, hold the component lead with a

pair of long-nose pliers between the component body and the solder joint. Use a solder removing wick to remove excess solder from connections or to clean circuit board pads.

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Semiconductors

To remove in-line integrated circuits use an extracting ;ool. This tool is available from Tektronix, Inc.; order Tektronix Part Number 003-0619-00. If an extracting tool is not available, use care to avoid damaging the pins. Pull

slowly and evenly on both ends of the integrated circuit.

Try to avoid disengaging one end before the other end.

Interconnecting Pins

Several methods of interconnection including square

pin and coaxial cable, are used to electrically connect the

circuit boards with other boards and components.

Coaxial Cables

If the coaxial cable to the FUNCTION OUTPUT front

panel connector is damaged replace the entire cable assembly. Other coaxial cables in the AA 501 can be replaced or repaired as necessary.

Square Pin Assemblies

If the individual end lead pin connectors are removed

from the plastic holder, note the order of the individual

,ires

for

correct

replacement

replacement in the holder.

see

~i~,

5-2,

END-LEAD

MULTI-PIN

CONNECTOR

F~~

END-LEAD MULTI-PIN

CONNECTOR

proper

See Fig.

5-1.

These pins areof variouslengths. They are attached to each other with a plastic strip. To remove them, simply unsolder from the circuit board.

Fig. 5-1. Typical square pin assembly.

Multi pin Connectors

MULTI-PIN

CONNECTOR

INDEX

Fig. 5-2. Orientation and disassembly of multipin connectors.

1986-68

Circuit Board Removal

Fig. 5-3 shows the removal and replacement of instru-

ment side covers. Next remove the six screws attaching

the top cover and rear panel as shown in Fig.

unsolder the leads from the circuit board to the INPUT connectors. Remove the INPUT LEVEL RANGE knob.

To remove side covers turn screw 1/4 turn ccw screwdrlver or coln.

wlth

5-4.

interconnecting pins are clamped to the ends of the wires.

To replace damaged mutlipin connectors, remove the old

pin connector from the holder. Do this by inserting a scribe between the connector and the holder and prying the connector from the holder. Clamp the replacement

connector to the wire. Reinstall the connector in the

holder.

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Fig. 5-3. Side cover removal or replacement.

MEDL4

=>

I

/

I

1

f".

I

?move these screws

remove top cover.

*

i

\

' ' ;

J,

To remove the back panel remove these fasteners

(3116"

wrench required)

and the top two screws.

Fig.

5-4. Top and rear panel removal.

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2958-30

=>

Disconnect all cables attached to the front panel display board. Finally, remove the two screws attaching the main board and one screw attaching the logic board tothe plugin frame as shown in Fig. 5-5. Afterthe remaining cablesto

the front panel have been removed, all boards can now be

lifted from the plug-in frame. To further disassemble the boards, remove the interconnecti ng cables and the screws holding the boards to each other via spacers.

,

\

To remove boards remove

these screws.

\

Magnetic Shield

The shield attached to the rear plate of the AA 501 is heat treated to enhance its magnetic shielding properties. The benefits of this treatment will be destroyed by mechanical stresses applied to this part. As such, care

should be taken not to drop or mechanically deform or

bend this shield during service operations.

Jumper Selection for CCIF, AUTO, or SMPTEIDIN Measurements

To change the jumper position, remove the left side

cover. See Fig. 8-2forjumperIocation. Withthejumper on the left two pins option 01 instruments are locked in the CCI F IMD mode. With the jumper on the center two pins, the unit automatically selects either CCIF or SMPTWDIN modes as determined bytheinput siqnals. Withtheiumper on the right two pins thk unit is locked in the SMPTWDIN mode.

Fig.

5-5.

Screws attaching the board assemblies to the

frame.

~~~~~bl~ is the that the cables so that the tracks attached to the instrument top do not rest on the cables.

over

reverse

the

tops

of

disassembly, ~~k~ certain

of

the boards

are

positioned

plug-in

Front Panel Latch Removal

To disassemble the latch, pry up on the pull tab bar attached to the latch assembly. Thelatch componentscan now be removed from the instrument.

30

kHz

Filter Modification

The 3 dB point of the 30 kHz

to 22.4 kHz or 20 kHz by changing three resistor values.

22.4

The

measurements. The 20 kHz modification is useful in high

fidelity audio work. The 30 kHz filter is allowed by the

Federal Communications Commission for proof of perfor-

mance

values of R1110, R1112, and R1210 to 21 kn 1/8

resistors, Tektronix Part Number 321-0320-00. To change the 3 dB point to 20 kHz, change the values of the same three resistors to 23.7 kn, 1/8

Part Number 321-0325-00.

kHz modification is useful in certain acoustic

testing

To change the 3 dB point to 22.4 kHz, change the

Of

LO

PASS can be modified

equipment.

W,

1% resistors, Tektronix

W,

l0/o

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REAR INTERFACE INFORMATION

FUNCTIONS AVAILABLE AT REAR

CONNECTOR

Slots exist between pins 17 and 18 and 6 and 7 on the rear interface connector. The slot between pins 6 and 7 identifies the AA 501 as a member of the TM 500 family. Insert a barrier in the corresponding position of the power module jack to prevent noncompatible plug-ins from being inserted in slots wired for the AA 501. This protects

the plug-in if specialized connections are made to that

compartment. Consult the Building A System section of

the power module manual for further information. Signal inputs, outputs, or other specialized connections may be

made to the rear interface connectors as shown in the

input output assignmentsillustration (Fig. 5-6). tion of these connections follows.

+

and - lnput Connectors (28B, 28A)

These terminals are connected to the input of the

AA 501 when the REAR

panel is pressed. The front panel INPUT connectors are

disconnected in this mode. The characteristics of these terminals are identical with t he front panel INPUT connectors except the maximum input voltage is limited to

peak or 30 V rms. Due

rear interface, noise and distortion performance may be degraded.

INTFC INPUT button on the front

tothe possibility of crosstalk at the

lnput Common (27B, 27A)

Adescrip-

42

Function Output Ground (24B)

Usethis connector forthereturn circuit forthefunction

out put.

lnput Monitor (24A)

This terminal is in parallel with the front panel INPUT

MONITOR connector.

lnput Monitor Ground (23A)

Use this connector as the return circuit for the INPUT

MONITOR.

SMPTE HF Output (21B)

The high frequency component of a SMPTE test signal is provided at this jack. This signal can be monitored on a spectrum analyzer or oscilloscope. The range is typically

from 0.5 V to 3 V. The amplitude varies with the input

signal level and the low to high frequency amplitude ratio. The output impedance is 2 kn.

V

SMPTE HF Output Ground (22B)

Usethis connector as the ground return forthe SMPTE HF output.

These are the common (ground) connections for the

rear interface input.

Auxiliary lnput (25B)

This terminal is connected in parallel with the front panel AUXILIARY INPUT connector. Maximum input voltage is 15 V peak and limited to 6 V peak for linear operation.

Auxiliary Input Ground (26B)

Use this connection as a ground return fortheauxiliary

input.

Converter Output (20A)

This connector provides a dc output from the ac to dc converter. This level corresponds to the average or rms output as selected on the front panel. The output level is

*5%for a 1000 count display. Thesource resistance is

1 V 500 n k50/0.

dB Converter Output (19B)

This connector provides a dc output from the logarithmic dB converter. The output voltage is 10 mV *5% for each 1 dB on the display. Thesource resistance is

kn*5%. Changes in input level rangeor distortion range

1

will cause brief ac transients.

Function Output (23B) dB Converter Output Ground (20B)

This connector is in parallel with the front panel Use this connector as the ground return for the dB

FLlNCTlON OUTPUT connector. converter output.

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FUNCTION CONTACTS

+Input

288

+

CONTACTS FUNCTION

I

+

28A

-Input

Input common (ground)

Auxiliary input ground

Auxiliary input

Function output ground

Function output

SMPTE HF output ground

SMPTE HF output

dB converter output ground

dB converter output

278 268 25B 24B

238 228 218

208 19B

188 178

16B I5B 148

138

+

--)

1)

?)

1)

--)

+

--)

-W

+

-b-

-+

I I

I I I

I I

1

I

+

27A

I

+-

26A

I

+

25A

I

+

24A

I

+

23A

I

+

22A

I

+

21A

I

+-

20A

I

+

19A

I

4-

17A

I

+

16A

I

+

15A

I

+

14A

I

+

13A

Input common (ground)

Input monitor

Input monitor ground

Converter output

Converter output ground

Barrier

Slot

+33.5 V filtered dc

Colleclor lead of pnp series-pass

Transformer shield

f33.5 v common return

-33.5 V filtered dc

Collector lead of npn series-pass

No connection

1 7.5 V ac winding

+1

I.

5 V common return

+11.5 V common return

+

11.5 V filtered dc

25 V ac winding

Assignments listed for pins however, onlythosepins marked with an asterisk (') are used in

'128

1)

I

+

12A'

'

11 B

--)

1

e

11 A*

10B

1)

1

'9B

+

I

'88

1)

'

78

--)

6B

-k

58

1)

'48

-b-

'38

-W

'

28

+

18

--) Rear view

1A-13A and 1B-13B are availablein all power modules;

I

A

-

I

I I

I

1

of

plug-in

1 OA*

+-

+

f33.5 V filtered dc

Base lead of pnp series-pass

Emitter lead of pnp series-pass

9A'

f33.5 v common return

8A'

-33.5 V filtered dc

7A'

Emitter lead of npn serles-pass

6A'

Base lead of npn series-pass Slot

5A

17.5 V ac winding

4A'

+11.5 V common return

3A'

fll.5 V common return

2A'

+ll.SVfiltereddc

1A

25Vacwinding

the AA 501.

TM

Barrier

500

2958-49

Fig. 5-6. Rear interface connector assignments.

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OPTIONS

Section

6-AA

501

Option difference frequency distortion. Information about this option is located in the appropriate sections of this manual.

01

instruments measure SMPTWDIN intermodulation distortion and CClF two tone

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REPLACEABLE

ELECTRICAL PARTS

PARTS ORDERING INFORMATION

Section

7-AA

501

Replacement parts are available from or through your local

Tektronix. Inc. Field Office or representative.

Changes to Tektronix instruments are sometimes made to

accommodate improved components as they become available. and to give you the benefit of the latest circuit improvements developed in our engineering department. It is therefore important, when ordering parts, to include the following information in your order: Part number, instrument type or number, serial number, and modification number if applicable.

If

a part you have ordered has been replaced with a new improved part, your local Tektronix, Inc. FioldOfficeor representative will contact you concerning any change in part number.

Change information, if any, is located at the rear of this

manual.

or

LIST OF ASSEMBLIES

A

l~st of assemblies can be found at the beginning of the

Electr~cal Parts List. The assemblies arelisted in numerical order. When the completecomponent number of a part is known, this list ment part from Tektronix. will identify the assembly in which the part is located.

CROSS INDEX-MFR. CODE NUMBER TO

MANUFACTLIRER

The Mfr. Code Number to Manufacturer index for the Electrical Parts List is located immediately after this page. The Cross Index provides codes, names and addresses of manufac-

turers of components listed in the Electrical Parts List.

Only the circuit number will appear on the diagrams and

circuit board illustrations. Each diagram and circuit board illustration is clearly marked with the assembly number. Assembly numbers are also marked on the mechanical exploded views located in the Mechanical Parts List. The component number is obtained by adding the assembly number prefix to the circuit number.

The Electrical Parts List is divided and arranged by assemblies in numerical sequence subassemblies and parts, precedes assembly assemblies and parts).

Chassis-mounted parts have no assembly number prefix

and are located at the end of the Electrical Parts List.

TEKTRONIX PART NO. (column two of the

Electrical Parts List)

Indicates

part, number to be used when ordering replace

SERIALIMODEL NO. (columns three and four

of the Electrical Parts List)

Column three (3) indicates the serial number at which the

part was first used. Column four (4) indicates theserial

which the part was removed. No serial number entered indicates

part is good for all serial numbers.

(e.g., assembly A1 with its

A2

with its sub-

numberat

ABBREVIATIONS

Abbreviations conform to American National Standard ~1.1.

COMPONENT NUMBER (column one

of the

Electrical Parts List)

A numbering method has been used toidentify assemblies, subassemblies and parts. Examples of this numbering method and typical expansions are illustrated by the following:

Example a. component number

A23R1234

Assembly number Circuit number

Read: Reslslor

Example b. component number

A23A2R1234 R1234 Assembly number

Read: Reslstor

1234

-

~23 131234

1234

of Assembly

23

-

of Subassembly 2 of Assembly

23

NAME & DESCRlPTlON (column five of the

Electrical Parts List)

In the Parts List, an Item Name is separated from the description by a colon Name may sometimes appear as incomplete. For further Name identification, the U.S. Federal Cataloging Handbook H6-1

can be utilized where possible.

(:).

Because of space limitations, an ltem

ltem

MFR. CODE (column six of the Electrical Parts

List)

Indicates the code number of the actual manufacturer of the part. (Code to name and address cross reference can be found immediately after this page.)

MFR. PART NUMBER (column seven of the

Electrical Parts List)

Indicates actual manufacturers part number.

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Replaceable Electrlcal Parts-AA

CROSS INDEX-MFR. CODE NUMBER TO MANUFACTLIRER

Mfr.

Code

OOOGS

00853

0

1002

A P PRODUCTS, INC. SANGAMO ELECTRIC CO., S. CAROLINA DIV. GENERAL ELECTRIC COMPANY, INDUSTRIAL AND POWER CAPACITOR PRODUCTS DEPARTMENT ALLEN-BRADLEY COMPANY TEXAS INSTRUMENTS, INC., SEMICONDUCTOR GROUP SPECTROL ELECTRONICS CORPORATION RCA CORPORATION, SOLID STATE DIVISION GENERAL ELECTRIC COMPANY, SEMI-CONDUCTOR PRODUCTS DEPARTMENT AVX CERAMICS, DIVISION OF AVX CORP.

MOTOROLA, INC., SEMICONDUCTOR PROD. DIV.

FAIRCHILD SEMICONDUCTOR, A DIV. OF FAIRCHILD CAMERA AND INSTRUMENT CORP.

GENERAL ELECTRIC CO., MINIATURE

LAMP PRODUCTS DEPARTMENT UNITRODE CORPORATION AMPHENOL CARDRE DIV., BUNKER RAM0 CORP.

ITT SEMICONDUCTORS

MICRO SEMICONDUCTOR CORP. ELECTRO CUBE INC. SILICONIX, INC. VACTEC, INC. SIGNETICS CORP. ILLINOIS TOOL WORKS, INC. PAKTRON DIV. ELECTRONIC APPLICATIONS COMPANY BERG ELECTRONICS, INC. ANALOG DEVICES INC. CORNING GLASS WORKS, ELECTRONIC COMPONENTS DIVISION SPECIALITY CONNECTOR CO., INC. NATIONAL SEMICONDUCTOR CORP. INTERSIL, INC. BOURNS, INC.,

MIDWEST COMPONENTS INC.

HEWLETT-PACKARD COMPANY MONSANTO CO., ELECTRONIC SPECIAL PRODUCTS ELECTRONIC CONCEPTS, INC. LITRONIX INC. MATSUSHITA ELECTRIC, CORP. OF AMERICA

GETTIG ENG. AND MEG. COMPANY

NICHICON/AMERICA/CORP.

SPRAGUE ELECTRIC CO. BUSSMAN MFG., DIVISION OF MCGRAW-

EDISON CO. CENTRALAB ELECTRONICS, DIV. OF GLOBE-UNION, INC. CHICAGO MINIATURE LAMP WORKS ERIE TECHNOLOGICAL PRODUCTS, INC. BECKMAN INSTRUMENTS, INC., HELIPOT DIV. STACKPOLE CARBON CO.

TEKTRONIX

MALLORY CAPACITOR CO., DIV. OF

P.

DALE ELECTRONICS, INC.

GORDOS COHPORAT ION

Manufacturer

TRIMPOT PRODUCTS DIV.

,

INC

.

R. MALLORY AND CO., INC.

501

Address

BOX 110 P 0 BOX

JOHN STREET 1201 P EXPRESSWAY 17070 EAST GALE AVENUE ROUTE 202

ELECTRONICS PARK

P

5005 E MCDOWELL

464 ELLIS STREET

NELA PARK

580 PLEASANT STREET

3301 ELECTRONICS WAY P 2830 F

1710 S. DEL MAR AVE. 2201 LAURELWOOD DRIVE 2423 NORTHLINE INDUSTRIAL BLVD.

811 E. ARQUES

900 FOLLIN LANE, SE 2213 EDWARDS AVENUE

YOUK EXPRESSWAY

RT

550 2620

2900 SEMICONDUCTOR DR.

10900

1200 COLUMBIA AVE.

P.

1981 PORT CITY BLVD.

640 PAGE MILL ROAD

3400 526 INDUSTRIAL WAY WEST 19000 HOMESTEAD RD.

I

PANASONIC WAY PO BOX 85, 6435 N PROESEL AVENUE 87 MARSHALL ST.

2536 W. UNIVERSITY ST.

P

0

44 33 RAVENSWOOD AVE

644 W. 12TH ST. 2500 HARBOR BLVD.

P

0

3029 E. WASHINGTON STREET

P. P. 2 50

128

2ND STREET SOUTH

0

BOX 5012, 13500 N CENTRAL

0

BOX 867, 19TH AVE. SOUTH

0

BOX 3049

FAIRVIEW ST.

1 INDUSTRIAL PK,P 0 BOX 280

UIGH STREET

ENDRESS PLACE

N. TANTAU AVE.

0.

BOX 787

HILLVIEW AVENUE

BOX 858

RD,PO BOX 20923

OFF ROUTE 45

.

BOX 500

0.

BOX 372

0.

BOX 609

GLENWOOD AVENIJE

City-

State,

Zip

PAINESVILLE, OHIO 44077 PICKENS, SC 29671

HUDSON FALLS, NY 12839 MILWAUKEE, WI 53204

DALLAS, TX 75222

CITY OF INDUSTRY, CA 91745

SOMERVILLE, NY 08876

SYRACUSE, NY 13201 MYRTLE BEACH, SC 29577 PHOENIX,

MOUNTAIN VIEW, CA 94042

CLEVELAND, OH 44112 WATERTOWN, MA 02172 LOS GATOS, CA 95030

WEST PALM BEACH,

SANTA ANA, CA 92704 SAN GABRIEL, CA 91776 SANTA CLARA, CA 95054

MARYLAND HEIGHTS, MO 63043 SUNNYVALE, CA 94086 VIENNA, VA 22180 SOUTH EL MONTE, CA 91733 NEW CUMBERLAND, PA 17070 NORWOOD, MA 02062

BRADFORD, PA 16701 GREENWOOD, IN 46142 SANTA CLARA, CA 95051 CUPERTINO, CA 95014 RIVERSIDE, CA 92507

MUSKEGON, PAL0 ALTO, CA 94304

PAL0 ALTO, CA 94304 EATONTOWN, NJ 07724 CUPERTINO, CA 95014

SECAUCUS, NJ 07094 SPRING MILLS, PA 16875 CHICAGO, IL 60645 NORTH ADAMS, MA 01247

ST. LOUIS, MO 63107

FORT DODGE, IA 50501 CHICAGO, IL 60640

ERIE, PA 16512

FULLERTON, CA 92634 ST. BEAVERTON, OR 97077

INDIANAPOLIS, IN 46206

COLUMBUS, NE 68601 BLOOMFIELD, NJ 07003

A2 85036

EL 33402

MI 49443

HARYS, PA 15857

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REV A, MAR

1981

Replaceable Electrical Parts-AA

501

Component

No.

Tektronix

Part

No.

SerialIModel

Ef

f

No.

Dscont

Mfr

Name

&

Description

CKT BOARD ASSY:DISPLAY 80009 670-6525-00 CKT BOARD CKT BOARD (NOT REPLACEABLE ORDER 672-0883-00) CKT BOARD (OPTION 01 AND 02 ONLY)

CKT BOARD CKT BOARD

(STANDARD ONLY)

CKT BOARD ASSY:MAIN 80009 670-7502-00

(OPTION

CKT BOARD ASSY:DISPLAY LAMP,LED RD0UT:RED LAMP,LED RDOUT:ORANGE,7 SEG,0.4 DIGIT

LAMP,LED RDOUT:ORANGE,7 SEG,0.4 DIGIT LAMP,LED RDOUT:ORANGE,7 SEG,0.4 DIGIT LAMP,LED RDOUT:ORANGE,7 SEG,0.4 DIGIT

LAMP,LED RDOUT:ORANGE,7 SEG,0.4 DIGIT LT EMITTING LT EMITTING LT EMITTING LT EMITTING LT EMITTING

ASSY:DVM 80009 670-6524-00 ASSY:CONTROL LOGIC

ASSY:IMD 80009 670-6521-00

ASSY:INPUT AND NOTCH FILTER 80009 670-6522-00 ASSY:MAIN 80009 670-6520-00

02

ONLY)

10

ELEM BAR GRAPH

DIO:RED,660NM,bOMA MAX DIO:RED,660NM,50MA MAX DIO:RED,660NM,50MA MAX DIO:RED,660NM,50MA MAX DIO:RED,660NM,50MA MAX

Code

Mfr

Part

Number

LT EMITTING LT EMITTING LT EMITTING TERM.

TERM.

CONN,RCPT,ELEC:CKT BD.2 X 20,MALE

TERM. SET,PIN:36/0.025 SQ PIN,ON 0.1 CTRS RES.,FXD,CMPSN:680 OHM,5%,0.25W RES.,FXD,CMPSN:680 OHM,5%,0.25W

DIO:RED,660NM,50MA MAX DIO:RED,660NM,50MA MAX

DIO:RED,660NM,50MA MAX SET,PIN:36/0.025 SQ PIN,ON 0.1 CTRS SET,~IN:36/0.025 SQ PIN,ON 0.1 CTRS

27014 SJ62775 27014 SJ62775 27014 SJ62775 22526 65500136 22526 65500136

OOOGS OBD

REV

DEC

1981

Scans

by

ARTEK

MEDLQ

*

Replaceable Electrical Parts-AA

501

Component

A1

1 A1 LC1020 Al lC1021

AllC1120 A1 lC1220 AllJllll

No.

Tektronix

Part

No.

-----

285-1098-00 281-0813-00 281-0775-00

281-0809-00

131-2238-00

SerialIModel

Ef

f

No.

Dscont

Name

&

Description

CKT BOARD ASSY:DVM

CAP.,FXD,PLSTC:0.22UF,lO%,8OV

CAP. ,FXD CER DI:O.O47UF,20%,50V CAP.,FXD,CER DI:O.lUF,20%,50V CAP.,FXD,CER DI:200PF,5%,100V

CONN,RCPT,ELEC:CKT BD,2 X 20,MALE

SET,~IN:36/0.025 SQ PIN,ON

TERM. TRANSISTOR:SILICON,NPN TRANSISTOR:SILICON,PNP RES.,FXD,CMPSN:820 OHM,5%,0.25W RES.,FXD,CMPSN:820 OHM,5%,0.25W RES.,FXD,CMPSN:430 OHM,5%,0.25W

RES. ,FXD,CMPSN:51K OHM,5% ,0.25W RES.,FXD,CMPSN:510K OHM,5%,0.25W RES.,FXD,CMPSN:3.3M OHM,5%,0.25W RES.,FXD,CMPSN:3.3M OHM,5%,0.25W RES.,FXD,CMPSN:82OK OHM,5%,0.25W RES.,FXD,CMPSN:51K OHM,5%,0.25W

0.

Mfr

Code

56289

04222

72982 72982

OOOGS

Mfr

Part

Number

192P2249R8 GC705-E-473M 8005D9AABZ5U104M

8013T2ADDClG201J OBD

RES.,FXD,CMPSN:51K OHM,5%,0.25W RES.,FXD,CMPSN:62OK OHM,5%,0.25W RES.,FXD,CMPSN:430 OHM,5%,0.25W RES. ,FXD,CMPSN:430 OHM,5%,0.25W RES.,FXD,CMPSN:430 OHM,5%,0,25W

RES.,FXD,CMPSN:430 OHM,5%,0.25W

Scans

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MEDL4

=>

REV

DEC 1981

Replaceable Electrical Parts-AA

501

Tektronix SerialIModel No.

Com~onent No. Part No.

Eff

Dscont

Name

&

Descri~tion

RES.,FXD,CMPSN:51K OHM,5%,0.25W MICROCIRCUIT,LI:OPNL AMPL MICROCIRLCUIT,LI:A/D CONV.3.5 DICIT MICROCIRCUIT,LI:OPNL AMPL MICROCIRCUIT,DI:QUAD 2-INPUT NAND GATE MICROCIRCUIT,LI:OPNL AMPL

Mfr

Code Mfr Part Number

REV

DEC

1981

Scans

by

ARTEK

MEDLQ

=>

Replaceable Electrical Parts-AA

50

1

No.

Tektronix

Part

No.

SerialIModel

Ef

f

No.

Dscont

Mfr

Name

&

Description

CKT BOARD ASSY:CONTROL LOGIC CAP.,FXD,CER DI:O.lUF,20%,50V 72982 8005D9AABZ5U104M

CAP.,FXD,ELCTLT:IOUF,+50-IO%,2OV

CAP.,FXD,CER DI:O.IUF,20%,50V 72982 8005D9AABZ5U104M CAP.,FXD,CER DI:O.lUF,20%,50V 72982 8005D9AABZ5U104M CAP.,FXD,CER DI:O.lUF,20%,50V 72982 8005D9AABZ5U104M

CAP.,FXD,CER DI:O.0047UF,lO%,IOOV 04222 GC701C472K CAP.,FXD,CER DI:100PF,IO%,IOOV 04222 GC70-1-A101K CAP.,FXD,CER DI:O.OlUF,I0%,100V 04222 GC70-lC103K SEMICOND SEMICOND SEMICOND

SEMICOND SEMICOND SEMICOND SEMICOND SEMICOND SEMICOND

SEMICOND SEMICOND SEMICOND SEMICOND SEMICOND

CONTACT SET,ELE:R ANCLE,O.Z5OL,STRIP OF 36 22526 65524-136

CONTACT

CONTACT TERM. TERM.

DEVICE:SILICON,30V,I50MA

DEVICE:SILICON,30V,l5OMA

DEVICE:SILICON,30V,I50MA

DEVICE:SILICON,3OV,I50MA DEVTCE:SILICON,SOV,l50MA

DEVICE:SILICON,30V,l5OMA

DEVICE:SILICON,30V,I50MA

DEVICE:SILICON,3OV,I50MA

DEVICE:SILICON,30V,I50MA

DEVICE:SILICON,30V,l5OMA

SET,ELE:R ANGLE,O.Z5OL,STRIP OF 36 22526 65524-136 SET,ELE:R ANCLE,0.250L,STRIP OF 36 22526 65524-136 SET,ELE:R ANGLE,O.Z5OL,STRIP OF 36 22526 65524-136

SET,ELE:R ANCLE,O.Z5OL,STRIP OF 36 22526 65524-136 SET,PIN:I X 36,O.l CTR,0.9 L 22526 65539-001 SET,PIN:36/0.025 SQ PIN,ON 0.1 CTRS 22526 65500136

Code

Mfr

Part

56289 500D149

01295 lN4152R

01295 1N4152R 01295 lN4152R

01295 1N4152R 01295 1N4152R 01295 lN4152R 01295 1N4152R 01295 IN4152R 01295 1N4152R

01295 1N4152R 01295 1N4152R 01295 1N4152R

01295 1N4152R 01295 1N4152R

Number Component

TERM.

SET,PIN:36/0.025 SQ PIN,ON 0.1

TERM.

SET,PIN:36/0.025 SQ PIN,ON 0.1 CTRS 22526 TRANSISTOR:SILICON,NPN TRANSISTOR:SILICON,NPN TRANSISTOR:SILICON.NPN

TRANSISTOR:SILICON,NPN

CTRS 22526 65500136

65500136 07263 SO32677 07263 SO32677

07263 SO32677 07263 SO32677

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REV

DEC

1981

Replaceable Electrical Parts-AA

501

Com~onent

No.

Tektronix

Part

No.

SerialtModel

Eff

No.

Dscont

Name

&

Descri~tion

M

fr

Code

Mfr

01121 01 121 01121 01121

01121

Part

CB2235 CB2235

CB5135 CB5135 CB5135 CB5135

Number

RES.,FXD,CMPSN:5lK OHM,5%,0.25W RES.,FXD,CMPSN:510 OHM,5%,0.25W RES.,FXD,CMPSN:510 OHM,5%,0.25W RES.,FXD,CMPSN:lOK OHM,5%,0.25W RES.,FXD,CMPSN:lOK 0HM,5%,0.25W

RES. ,FXD,CMPSN:lOK OHM,5%,0.25W

REV

DEC

1981

Scans

by

ARTEK

MEDL4

=>

Replaceable Electrical

Parts-AA

501

Tektronix

Component

A12R1402 315-0104-00

A12R1403 315-0104-00 A12R1404 321-0193-01

A12R1405 321-0193-01

A12R1406 315-0122-00

A12R1407 32 1-0614-00

No.

Part

No.

SeriallModel

Eft

No.

Dscont

Mfr

Name

&

Description

RES.,FXD,CMPSN:lOOK OHM,5%,0.25W

RES.,FXD,CMPSN:lOOK OHM,5X,0.25W RES.,FXD,FILM:lK OHM,0.5%,0.125W RES.,FXD,FILM:IK OHM,0.5%,0.125W RES.,FXD,CMPSN:1.2K OHM,5%,0.25W RES.,FXD,FILM:lO.IK OHM,1%,0.125W

RES.,FXD,CMPSN:lOOK OHM,5%,0.25W RES.,FXD,CMPSN:l30 OHM,5%,0.25W 01121 RES.,FXD,CMPSN:lOOK OHM,5%,0.25W 01121 RES.,VAR,NONWIR:5OK OHM,20%,0.50W 73138 RES.

,VAR,NONWIR:5K OHM, 10% ,O .SOW 73138

RES..FXD,FILM:I33K OHM,l%,O.l25W 91637

Code

01

121

Mfr

Part

Number

CB1045 CB1045 MFF 181 6C 10000D

MFF1816G10000D

CB1225

MFF1816C10101F

RES.,FXD,CMPSN:3.9K OHM,5%,0.25W RES.,FXD,FILM:11.3K OHM,I%',O.l25W RES. ,FXD,CMPSN:51K OHM,5%,0.25W RES.,FXD,CMPSN:5lK OHM,5%,0.25W RES.,FXD,CMPSN:51K OHM,5%,0.25W RES.,FXD,CMPSN:5IK OHM,5%,0.25W

SWITCH,PUSH:4 RUTTON,2 6 4 POLE,LEVEL M 71590 SWITCH,PUSH:I BUTTON,4 POLE,INPUT 7 1590 TERM.TEST PO1NT:BRS CD PL 80009 TERM,TEST PO1NT:BRS CD PL 80009 TERM,TEST PO1NT:BRS CD PL 80009

MICROCIRCUIT,DI:BCD TO DECIMAL DECODER 80009

MICROCIRCUIT,DI:3 INPUT NOR GATE 80009 MICROCIRCUIT,DI:4 BIT AND/OR SEL 04713 MICROCIRClIIT, DI :4 BIT ADDER ,SELECTED 80009 MICROCIRCUIT,DI:BCD TO DECIMAL DECODER 80009 MICROCIRCUIT,DI:BINARY UP/DOWN COUNTER 04713 MICROCIRCUIT,DI:QUAD 2-INPUT NOR GATE 80009

MICROCIRCUIT,DI :4 BIT AND/OR SEL 04713 MICROCIRCUIT,DI:QUAD 2 INPUT AND GATE 80009 MICROCIRCUIT,DI:QUAD 2-INPUT NAND GATE 80009 MICROCIRCUIT,DI:QUAD ?-INPUT NOR GATE 80009 MICROCIRCIIIT MICROCIRCUIT,DI:BCD TO DECIMAL DECODER 80009

MICROCIRCUIT,DI:BINARY UP/DOWN COUNTER 04713 MICROCIRCUIT,DI:QUAD 2-INPUT NOR GATE 80009

MICROCIRCUIT,LI:QUAD-COMP,!XL

.DI :4 BIT AND/OR SEL 04713

SUPPLY 27014

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MEDU

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REV

DEC

1981

Replaceable Electrical Parts-AA

501

Component

A12U1222 A12U1231

A12U1312 A12111313 A12U1321 A12U1331

No.

Tektronix

Part

No.

156-0048-00 156-0513-00

156-1200-00 156-1200-00 156-0579-00 156-1200-00

SerialIModel

Ef

f

No.

Dscont

Mfr

Name

&

Description

MICROCIRCUIT,LI:FIVE NPN TRANSISTOR ARRAY

MICROCIRCUIT,DI:8-CHAN MUX

MICROCIRCUIT,LI:OPERATIONAL

MICROCIRCUIT,DI:DUAL 4-BIT BIN COUNTER

MICROCIRCUIT,LI:OPERATIONAL

MICROCIRCUIT,DI:DUAL 4-BIT BIN COUNTER 04713 MC14520BCL MICROCIRCUIT,DI:TRIPLE 3-CHAN MUX 80009 156-0515-00 MICROCIRCUIT,DI:QUAD 2-INPUT NAND GATE 80009 156-0350-01 MICROCIRCUIT,DI:DUAL D-TYPE F-F 80009 156-0366-00 SEMICOND SEMICOND

DEVICE:ZENER,0.4W,3V,5% 047 13 SZG35009K20

DEVICE:ZENER,0.25W,6.2V,5%

AMPL AMPL

AMPL

Code

Mfr

Part

Number

02735 CA3046 80009 156-0513-00 01295 01295 TL074CN 04713 MC1452OBCL 01295 TL074CN

80009 152-0486-00

TL074CN

REV

DEC

1981

Scans

by

ARTEK MEDL4

-

Replaceable Electrical Parts-AA

501

Component

No.

Tektronix

Part

No.

-----

290-0804-00 283-0167-00

290-0536-00 290-0719-00 285-0598-00

SerialIModel

Ef

f

No.

Dscont

Name & Descriotion

CKT BOARD ASSY:IMD

CAP.,FXD,ELCTLT:lOUF,+50-10%,25V

CAP.,FXD,CER DI:O.lUF,IO%,IOOV

CAP.,FXD,ELCTLT:10UF120%,25V CAP.,FXD,ELCTLT:47UF,20%,25V CAP.,FXD,PLSTC:O.OIUF,5%,lOOV

CAP.,FXD,PLSTC:O.O22UF,5%,200V

CAP. ,FXD,PI2STC:O.22UF, I%, IOOV

CAP.,FXD,CER DI:O.lUF,20%,50V

CAP.,FXD,PLSTC:0.0047UF,5%,lNJV

CAP.,FXD,PLSTC:O.O047UF,5%,10OV

CAP.,FXD,PLSTC:0.0047UF,5%,lOOV

CAP.,FXD,PLSTC:O.O22UF,5%,200V

CAP. ,FXD,CER DI :47PF, lo%, 100V CAP.,FXD,CER DI:47PF,lO%,lOOV

CAP.,FXD,PLSTC:O.O047UF,5X,lOOV

Mfr

Code

Mfr

Part

Number

CAP.,FXD,ELCTLT:IOUF,+50-10%,25V CAP.,FXD,PLSTC:O.O33UF,5%,10OV

SEMICOND SEMICOND DEVICE:SILICON,15V,HOT CARRIER SEMICOND SEMICOND

CONTACT SET,ELE:R ANGLE,0.250L,STRIP OF 36 CONTACT TERM. CONTACT CONTACT

TRANSISTOR:SILICON.NPN

TRANSISTOR:SILICON,NPN

RES.,VAR,NONWIR:IOK OHM,IO%,0.50W RES.,FXD,FILM:l8.2K OHM,0.5%,0.125W RES. ,FXD,FILM:71 .5K OHM,I%,0.125W

RES. ,FXD,CMPSN: 16K OHM,5% ,0.25W RES.,FXD,CMPSN:62K OHM,5%,0.25W

RES.,FXD,FILM:LK OHM,0.1%,0.125W RES. ,FXD,FILM:4K OHM,O. I%,0. 125W RES.,FXD,FILM:ZK OHM,0.1%,0.125W

DEVICE:SILICON,30V,I50MA

DEVICE:SILICON,15V,HOT CARRIER

DEVICE:SILICON,3OV,l5OMA

SET,ELE:R ANGLE,0.250L,STRIP OF 36

SET,PIN:36/0.025 SQ PIN,ON

SET,ELE:R ANGLE,0.250L,STRIP OF 36 SET,ELE:R ANGLE,0.250L,STRIP OF 36

0.1

CTRS

CB1025

MFF 18 16G28700F MFFI816G28700F EB36 15 CMF110216G1360lF CMF110216G13601F

Scans

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ARTEK

MEDC4

=>

REV

DEC

1981

Replaceable Electrical

Parts-AA

501

Component

No.

Tektronix

Part

No.

Serial/Model

Eff

No.

Dscont

Name

&

Description

RES.,FXD,FILM:75K OHM, 1%,0.125W RES.,FXD,FILM:3.83K Ol~M,l%,0.125W RES.,FXD,CMPSN:82 OHM,5%,0.25W RES.,FXD,CMPSN:1.5K OHM,5%,0.25W RES.,FXD,FILM:1.87K OHM,1%,0.125W RES.,FXD,FILM:1,62K OHM,l%,0.125W

RES.,FXD,CMPSN:lOOK OHM,5%,0.25W

RES. ,FXD,FILM:27.4K OHM,I%,O. 125W

RES.,FXD,FILM:2.67K OHM,1%,0.125W RES.,FXD,CMPSN:lOO OHM,5%,0.25W RES.,FXD,FILM:8.45K OHM,1%,0.125W RES.,FXD,FILM:24.3K OHM,1%,0.125W

Mfr

Code

Mfr

Part

Number

RES.,FXD,FILM:8.45K OHM,1%,0.125W

RES.,VAR,NONWIR:ZK OHM,I0%,0.50W CPLR,OPTOELECTR:140 OHM,40MA MICROCIRCUIT,LI:DUAL BI-FET OP-AMPL,8 DIP MICROCIRCUIT,LI:DUAL OPERATIONAL AMPLIFIER MICROCIRCUIT,LI:DUAL BI-FET OP-AMPL.8 DIP

MICROCIRCUIT,LI:DUAL OPERATIONAL AMPLIFIER

MICROCIRCUIT,LI:DUAL BI-FET OP-AMPL,8 DIP

MICROCIRCUIT,DI:TRIPLE 3-CHAN MUX

MICROCIRCUIT,LI:OPNL AMPL,DUAL

SEMICOND SEMICOND

DEVICE:ZENER,0.4W,7.5V,5%

MFF1816G84500F

72-199-0

VTL5C4

TL072CP NE5532 FE-IIB

TL072CP

NE5532 FE-IIB TL072CP

156-0515-00

NE5533N

SZG35009K2 SZG35009K2

REV

DEC

1981

Scans

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ARTEK

MEDU

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Replaceable Electrical Parts-AA

501

Com~onent

No.

Tektronix

Part

No.

SerialIModel

Eff

BOlOlOO B010229 B010230

No.

Dscont

Name

&

~e~cri~tion

CKT BOARD ASSY:INPUT AND NOTCH FILTER

CAP.,FXD,ELCTLT:2.7UF,l0%,20V

CAP.,FXD,CER DI:0.0033UF,5X,IOOV CAP.,FXD,CER DI:lUF,+80-20%,25V

CAP.,FXD,ELCTLT:68UF,20XD6V

CAP.,FXD,ELCTLT:lOUF,+50-10%,25V

CAP. ,FXD,CER DI:47PF,10%,100V (OPTION

CAP.,FXD,ELCTLT:2.7UF,IO%,2OV

CAP.,FXD,CER DI:47PF,lO%,lOOV

(STANDARD

CAP.,FXD,CER DI:27PF,20%,100V

(STANDARD

01

AND 02 ONLY)

ONLY)

Mfr

Code

Mfr

Part

Number

BOLO230 BOlOlOO 8010239

B010240

CAP.,FXD,CER DI:47PF,10%,100V (OPTION CAP.,FXD,CER DI:27PF,20%,100V (OPTION

CAP.,FXD,CER DI:47PF,lOZ,lOOV

(STANDARD

CAP.,FXD,CER DI:27PF,20%,lOOV

(STANDARD

CAP.,FXD,CER DI:47PF,10%,IOOV (OPTION

CAP.,FXD,CER DI:27PF,20%,100V

(OPTION

01

AND 02 ONLY)

01

AND 02 ONLY)

ONLY)

01

AND 02 ONLY)

01

AND 02 ONLY)

Scans

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MEDU

=>

REV

DEC

1981

Replaceable Electrical Parts-AA

501

Tektronix

Component

A14C1311 290-0523-00

A14C1330 281-0775-00 A14C1336 281-0823-00 A14C1400 281-0096-00 A14C1411 283-0728-00 A14C1412 283-0642-00

No.

Part

No.

SeriallModel

Eff

No.

Dscont

Narnc

&

Descri~tion

CAP.,FXD,MICA D:200PF,1%,500V CAP.,FXD.MICA D:200PF,1%,500V CAP.,FXD,CER DI:33PF,5%,50V CAP. ,FXD ,CER DI :O. 1 UF,20% ,50V CAP.,FXD,CER DI:47PF,10%,100V CAP.,FXD,CER DI:470PF,10%,50V

Mfr

Code

Mfr

Part

Number

56289

72982 12969

72982 00853 00853

00853 D155F121F03 56289 196D475X0050KAl 56289 OBD 72982 72982 8035BCOG330 72982 8035D9AADClG470K

196D225X0020HAl

8005D9AABZ5U104M

CGB47 1 KDN

538-006-A5 D155F121F03 D10-5E330G

8005D9AABZ5U104M

-5-18

CAP.,FXD,MTLZD:lUF,5%,400V

SEMICOND SEMICOND SEMICOND SEMICOND SEMICOND DEVICE:SW,SI,40V,200MA

SEMICOND SEMICOND SEMICOND SEMICOND SEMICOND DEVICE:SW,SI,40V,200MA SEMICOND DEVICE:SW,SI ,40V,200MA

SEMICOND SEMICOND SEMICOND SEMICOND SEMICOND DEVICE:SILICON,15V,HOT CARRIER SEMICOND

SEMICOND SEMICOND

SEMICOND SEMICOND SEMICOND SEMICOND

SEMICOND SEMICOND

DEVICE:SILICON,30V,l5OMA DEVICE:SILICON,30V,I50MA

DEVICE:SILICON,30V,l5OMA

DEVICE:SILICON.30V,l5OMA DEVICE:SILICON,30V,I50MA

DEVICE:SILICON,30V,I50MA

DEVICE:SILICON,30V,150MA

DEVICE:SILICON,30V,I50MA

DEVICE:SILICON,30V,l5OMA

DEVICE:SILICON,15V,HOT CARRIER

DEVICE:SILICON,15V,HOT CARRIER DEVICE:SILICON,15V,HOT CARRIER

DEVICE:SILICON,30V,l5OMA

DEVICE:SILICON.30V,I50MA

DEVICE:SILICON,30V,I50MA

REV

DEC 1981

Scans

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ARTEK

MEDU

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Replaceable Electrical Parts-AA

501

Component

A14CR1600 A14CR160L A14CR1602 A14CR1620 A14CR162 A14CR1624

No.

1

Tektronix

Part

No.

SerialIModel

Eff

BOlOlOO B010229X CORE,TOROID,FER:O.09 ID X 0.19 OD X 0.08"H

BOlOlOO B010239X CORE.TOROID,FER:0.09 ID X 0.19 OD X 0.08"H

BOlOlOO B010229X CORE,TOROID,FER:O.09 ID X 0.19 OD X 0.08"H

BOlOlOO B010239X CORE,TOROID,FER:0.09 ID X 0.19 OD X 0.08"H

No.

Dscont

Name

&

Description

SEMICOND SEMICOND

SEMICOND SEMICOND SEMICOND

SEMICOND

SEMICOND LAMP,INCAND:120V,O.O25A LAMP,INCAND:120V,O.O25A

(STANDARD

(OPTION

(STANDARD

(OPTION 01 AND 02 ONLY)

TERM. SET,PIN:36/0.025 SQ PIN,ON CONTACT

CONTACT TERM. TERM. TERM. TERM. TERM.

TERM. RELAY,REED:2 FORM A,5VDCCOIL,100MA AT RELAY,REED:2 FORM A,5VDCCOIL,IOOMA AT RELAY,REED:2 FORM A,5VDCCOIL,100MA AT RELAY,REED:2 FORM A,5VDCCOIL,IOOMA AT RELAY,REED:l FORM A,200V,0.5A,COIL,5VD

DEVICE:SILICON,30V,I50MA

DEVICE:SILICON,30V,l5OMA

DEVICE:SILICON,30V,150MA

DEVICE:SILICON,400V,750MA DEVICE:SILICON,400V,750MA DEVICE:SILICON,400V,750MA

DEVICE:SILICON,400V,750MA

ONLY)

01

AND 02 ONLY)

ONLY)

0.1

CTRS

CTRS CTRS CTRS CTRS CTRS

SET,ELE:R ANGLE,O.25OL,STRIP OF 36

SET,ELE:R ANGLE,O.Z5OL,STRIP OF 36 SET,PIN:36/0.025 SQ PIN,ON SET,PI~:36/0.025 SQ PIN,ON SET,PIN:36/0.025 SQ PIN,ON SET,PIN:36/0.025 SQ PIN,ON SET,P1~:36/0.025 SQ PIN,ON

SET,PIN:l X 14,0.15 SPACING

Mfr

Code

Mfr

Part

Number

RELAY,REED:l FORM A,200V,0.5A,COIL,5VD RELAY,REED:2 FORM A,5VDCCOIL,100MA AT

RELAY,REED:2 FORM A,5VDCCOIL,IOOMA AT RELAY,REED:2 FORM A,5VDCCOIL,IOOMA AT RELAY,REED:2 FORM A,5VDCCOIL,100MA AT RELAY,REED:2 FORM A,5VDCCOIL,lOOMA AT

TRANSISTOR:SILICON,NPN

TRANSISTOR: SII.ICON,NPN TRANSISTOR:SILICON,NPN TRANSISTOR:SILICON,NPN TRANSISTOR:SILICON,NPN TRANSISTOR:SILICON.NPN

Scans

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ARTEK

MEDL4

=>

REV

DEC

1981

Replaceable Electrical Parts-AA

501

Tektronix

Com~onent No. Part No.

SerialIModel No.

Eff Dscont Name

TRANSISTOR:SILICON,NPN,SEL

TRANSISTOR:SILICON,PNP TRANSISTOR:SILICON,NPN TRANSISTOR:SILICON,NPN TRANSISTOR:SILICON,PNP

TRANSISTOR:SILICON,NPN,SEL

TRANSISTOR:SILICON,NPN,SEL TRANSISTOR:SILICON,NPN,SEL

RES.,FXD,CMPSN:68K OHM,5%,0.25W RES.,FXD,CMPSN:27OK OHM,5%,0.25W RES.,FXD,CMPSN:24K OHM,5%,0.25W RES.,FXD,CMPSN:lOK OHM,5%,0.25W

RES.',FXD,CMPSN:lOK OHM,5%,0.25W RES.,FXD,CMPSN:560 OHM,5%,0.25W RES.,FXD,CMPSN:lOK OHM,5%,0.25W RES. ,FXD,CMPSN: 1OK OHM,5% ,0.25W RES.,FXD,CMPSN:ZOOK OHM,5%,0.25W RES.,FXD,CMPSN:lOK OHM,5%,0.25W

&

Descri~tion

Mf r

Code Mfr Part Number

FROM MPS918

FROM MPS918 FROM MPS918

A14R1037 A14R1038 A14R1039 A14R1100 AlORllOl A14R1103

BOlOlOO 8020369 RES.,FXD,FILM:ZK OHM,1%,0.125W

BOZO370 RES.,FXD,FILM:ZK OHM,0.1%,0.125W

BOlOlOO R020389 RES.,FXD,FILM:ZK OHM,l%,0.125W

8020390 RES.,FXD,FILM:ZK OHM,0.1%,0.125W

RES.,FXD,CMPSN:30K OHM,5%,0.25W

(STANDARD

(OPTION

(OPTION 01 AND 02 ONLY) RES.,FXD,FILM:30.9K OHM,1%,0.125W RES.,FXD,FILM:12.7K OHM,1%,0.125W RES.,FXD,CMPSN:lK OHM,5%,0.25W RES.,FXD,CMPSN:Z.ZK OHM,5%,0.25W

RES.,FXD,CMPSN:lOOK OHM,5%,0.25W RES.,VAR,NONWIR:25K OHM,lO%,O.5OW RES.,FXD,FILM:37.4K OHM,l%,O.l25W RES. ,VAR,NONWIR:25K OHM,~O% ,O .SOW RES.,VAR,NONWIR:25K OHM,10%,0.50W RES.,FXD,CMPSN:47K OHM,5%,0.25W

ONLY)

01

AND 02

ONLY)

!

REV

DEC

1981

Scans

by

ARTEK

MEDGQ

=>

Replaceable Electrical

Parls-AA

501

Component

No.

Tektronix

Part

No.

SeriallModel

XBO 10240

No.

Ef

f

Dscont

BOlOlOO 8020369

8020370

BOlOlOO 8020389

8020390

BOlOlOO BOZO370

B020369

Name

8

Descri~tion

RES.,FXD,CMPSN:51 OHM,5%,0.25W RES.,FXD,CMPSN:430 OHM,5%,0.50W

RES.,FXD,CMPSN:l.8K OHM,5%,0.25W RES. ,FXD,CMPSN:560 OHM,5%,0.25W RES.,FXD,CMPSN:240 OHM,5%,0.25W RES.,FXD,CMPSN:4.7K OHM,5%,0.25W

RES.,FXD,FILM:4.87K OHM,0.25%,0.125W

(STANDARD

RES.,FXD,FILM:4.87K OHM,lX,O.l25W (OPTION RES.,FXD,FILM:4.87K OHM,0.25%,0.125W (OPTION 01 AND 02 ONLY)

RES.,FXD,FILM:66.5K OHM,1%,0.125W

RES.,FXD,FILM:162 OHM,1%,0.125W RES. ,FXD ,FILM: 1.24K OHM, 1% ,O. 125W RES.,FXD,FILM:226 OHM,1%,0.125W RES.,FXD,FILM:105 OHH,l%,O.I25W RES.,FXD,CMPSN:IOO OHM,5%,0.25W

(STANDARD

RES.,FXD,CMPSN:lOO OHM,5%,0.25W (OPTION 01 AND 02 ONLY) RES.,FXD,CMPSN:lOO OHM,5%,0.25W RES. ,FXD,FILM:36.5K OHM, 1% ,O. 125W

(STANDARD

RES.,FXD,FILM:37.96K OHM,0.25%,O.l25W

t

STANDARD

ONLY)

01

AND 02 ONLY)

ONLY)

Mir

Code

Mfr

Part

Number

BOlOlOO BOZO389

8020390

BOlOlOO 8020369

8020370

BOlOlOO

BOZO390

B020389

RES.,FXD,FILM:36.5K OHM,l%,0.125W (OPTION

RES.

(OPTION RES.,FXD,FILM:88.7K OHM,1%,0.125W

(

STANDARD

RES.,FXD,FILM:92.5K OHM,0.25%,O.l25W

(STANDARD

RES.,FXD,FILM:88.7K OHM,I%,0.125W (OPTION

RES.

(OPTION

RES.,FXD,FILM:900 OHM,0.1%,0.125W RES..FXD,FILM:lBK OHM,0.25%,0.125W RES.,FXD,CMPSN:lOOK OHM,5%,0.25W RES.,FXD,CMPSN:lOOK OHM,5%,0.25W RES. ,FXD,CMPSN: 100K OHM,5%,0.25W RES.,FXD,CMPSN:lOOK OHM,5%,0.25W

RES. ,FXD,CMPSN: 1M OHM,5% ,0.25W RES. ,FXD,FILM:4.5K OHM,O. 25% ,O. 125W RES.,FXD,FILM:500 OHM,0.25%,0.125W RES..FXD,FILM:1,85lK OHM,O.I%,O.I25W RES.,FXD,FILM:4K OHM,O.L%,O.I25W RES..FXD,FILM:2.94K OHM.lX,O.l25W

01

,FXD,FILM:37.96K OHM,0.25%,O.l25W

,FXD ,FILM:92.5K OHM,O .25% ,O. 125W

AND 02 ONLY)

01

AND 02 ONLY)

ONLY)

01

AND 02 ONLY)

01

AND

02

ONLY)

Scam

by

ARTEK

MEM

=>

REV

DEC

1981

Replaceable Electrical Parts-AA

501

Tektronix

Component

A14R1215 31 5-0102-00 A14R1216 321-0771-03 A14R1217 321-0749-06 A14R1218 321-0774-03 A14R1219 315-0102-00 A14R1220 315-0102-00

No.

Part

No.

SerialIModel

Ef

f

XB010230

XBO 10240

XB010230

No.

Dscont

Mfr

Name

&

Description

RES.,FXD,CMPSN:lK OHM,5%,0.25W RES. ,FXD,FILM:50 OHM,0.25Z,O.l25W RES.,FXD,FILM:450 OHM,0.25%,0.125W RES.,FXD,FILM:4.5K OHM,0.25%,0.125W RES.,FXD,CMPSN:lK OllM,5%,0.25W RES.,FXD,CMPSN:lK OHM,5%,0.25W

RES.,FXD,CMPSN:430 OHM,5%,0.25W

(STANDARD

RES.,FXD,CMPSN:430 OHM,5%,0.25W

(OPTION 01 AND 02 ONLY) RES.,FXD,CMPSN:430 OHM,5%,0.25W (STANDARD ONLY)

RES.',FXD,CMPSN:430 OHM,5%,0.25W 01121 CB4315

(OPTION 01 AND 02 ONLY)

RES.

(STANDARD

RES.,FXD,CMPSN:220 OHM,5%,0.25W 01121 CB2215 (OPTION 01 AND 02 ONLY)

RES. RES.,FXD,CMPSN:2K OHM,5%,0.25W RES.,FXD,CMPSN:51K OHM,5%,0.25W RES.,FXD,CMPSN:750 OHM,5%,0.25W RES.,FXD,CMPSN:22K OHM,5%,0.25W RES.,VAR,NONWIR:lOOK OllM,10%,0.5W

ONLY)

,FXD,CMPSN:220 OHM,5%,0.25W 01121 CB2215

ONLY)

,FXD,CMPSN:15K OIlM.5%,0.25W

Code

Mfr

Part

01121 CB1025 91637 MFF1816D50ROOC 91637 MFFl816C450ROC 91637 MFF1816D45000C 01121 CB1025 01121 CB1025

Number

RES.,FXD,CMPSN:lOO OHM,5%,0.25W RES.,FXD,FILM:22.1K OHM,l%,O.l25W RES. ,FXD,FILM:4.99K OHM, 1%,0.125W RES.,FXD,FILM:IOK OHM,l%,O.I25W RES.,FXD,FILM:IOK OHM,l%,0.125W RES.,FXD,FILM:lOK OHM,l%,O.I25W

RES.,FXD,CMPSN:51K OHM,5%,0.25W 01121 CB5135 RES.,FXD,FILM:178K 0~~,1%,0.125W 91637 MFF1816G17802F RES.,FXD,CMPSN:51K OHM,5%,0.25W 01121 CB5135 RES.,NTWK,FXD F1:GAIN SET

RES.,FXD,FILM:ZOK OHM,1%.0.125W 91637 MFFlRl6G20001F

RES. ,FXD,FILM:4.53K OHM,1%,0.125W 91637 MFF1816G45300F

80009 307-0683-00

REV

DEC

1981

Scam

by

ARTEK

MEDLQ

Replaceable Electrlcal Parts-AA

501

Component No.

A14R1435

A14R1436 A14R1500 A14R1501 A14R1502 A14R1503

Tektronix Serial/Model No.

Part No. Eff Dscont

Name 8 Descriotion

RES. ,FXD,CMPSN:.5IK OHM,5%,0.25W RES.,NTWK,FXD F1:INPUT ATTENUATOR RES.,FXD,CMPSN:27 OHM,5%,0.25W RES.,FXD,FILM:22.lK OHM,1%,0.125W RES.,FXD,FILM:22.1K OHM,1%,0.125W RES.,FXD,CMPSN:LK OHM,5%,0.25W

RES.,THERMAL:SK OHM,lO% SWITCH,PUSH:4 BUTTON,2 6 4 POLE,FUNCTION

TERM,TEST P0INT:BRS CD PL MICROCIRCUIT,DI:TRIPLE 3-CHAN MUX MICROCIRCUIT,LI:DUAL BI-FET OP-AMPL,8 DIP MICROCIRCUIT,LI:DUAL BI-FET OP-AMPL,8 DIP

MICROCIRCUIT ,LI CPLR,OPTOELETR:140 OHM,40MA CPLR,OPTOELETR:140 OHM.40MA CPLR,OPTOELETR:140 OHM,40MA MICROCIRCUIT,LI:DUAL RI-FET OP-AMPL,8 DIP MICROCIRCUIT,LI:OPNL AMPL,DUAL

:DUAL OPERATIONAL AMPLIFIER

Mfr

Code Mfr Part Number

01121 CB1515 01121 CB1515 01121 CB5135 01121 CB5135 01121 CB5135 01121 CB5135

18324 NE5532 FE-IIB 18178 18178 VTL5C4 18178 VTL5C4

01295 TL072CP

18324 NE533N

VTL5C4

MICROCIRCUIT,LI:DUAL RI-FET OP-AMPL,8 DIP

MICROCIRCUIT,LI:OPERATIONAL

MICROCIRCUIT,LI:OPNL AMPL,SELECTED MICROCIRCUIT,DI:DIFF 4-CHAN MUX MICROCIRCUIT,DI:8-CHAN MUX

MICROCIRCUIT,LI:OPERATIONAL

MICROCIRCUIT,LI:DUAL RI-FET OP-AMPL,8 DIP

CPLR,OPTOELETR:140 OHM.40MA

MICROCIRCIJIT,LI:OPERATIONAL

MICROCIRCIlIT,LI:OPNL AMPL,SELECTED

CPLR,OPTOELETR:140 OHM,40MA

MICROCIRCUIT,LI:OPNL AMPL,SELECTED MICROCIRCUIT,LI:DUAL OPERATIONAL AMPLIFIER

SEMICOND SEMICOND SEMICOND SEMICOND

SEMICOND DEVICE :ZENER ,0.4W,4.3V, SEMICOND

SEMICOND

BUS CONDUCT0R:DUMt-W RES,2.375,22 AWG BUS

BUS CONDUCT0R:DUMNY RES,2.375,22 AWG

DEVICE:ZENER,0.4W,5.1V,5%

DEVICE:ZENER,0.4W,6.8V,5%

DEVICE:ZENER,0.4W,IOV,5% DEVICE:ZENER,0.4W,IOV,5%

CONDIICT0R:DUMt-W RES,2.375,22 AWG

AMPLIFIER

AMP,SCREENED

5%

Scans

by

ARTEK

MEDL.4

REV

DEC

1981

Replaceable Electrical Parts-AA

501

Tektronix

Component No. Part No.

-----

A1 5

-----

SerialIModel No.

Eff Dscont Name

CKT BOARD ASSY:MAIN

CAP.,FXD,ELCTLT:4.7UF,+75-10%,35V

CAP.,FXD,CER DI:O.lUF,20%,50V CAP.,FXD,MICA D:2300PF,1%,500V

(OPTION

CAP.,FXD,MICA D:2300PF,1%,500V

(OPTION

02

ONLY)

&

Description

Mfr

Mfr Part Number

Code

CAP.,FXD,HICA D:2300PF,1%,5OOV

(OPTION

CAP.,FXD,MICA D:2300PF,1%,500V (OPTION 02 ONLY) CAP.,FXD,HICA D:2300PF,1%,500V

(OPTION

02

ONLY)

REV

DEC

1981

Scans

by

ARTEK

MEDL4

=>

Replaceable Electrical Parts-AA

501

Com~onent

No.

Tektronix

Part

No.

SeriallModel

Eff

No.

Dscont

Name & Description

CAP.,FXD,PLSTC:O.O27UF,5%,100V

CAP.,FXD,PLSTC:O.O22UF,5%,100V

CAP.,FXD,PLSTC:O.O~~UF,~%,~~OV

CAP.,FXD,PLSTC:0.01UFF5%,10~V

CAP.,FXD,CER DI:O.IUF,20%,50V

(OPTION 02 ONLY)

CAP.,FXD,CER D1:6.8PF,+/-0.5PF,20OV

(OPTION

CAP. ,FXD,CER DI:O.lUF,20%,50V

(OPTION

CAP.,FXD,CER DI:150PF,IO%,IOOV

(OPTION

02

02 02

ONLY)

Mfr

Code

Mfr

Part

Number

55680 25ULAlOV-T

CAP.,FXD,CER DI:O.lUF,20%.50V

CAP.,FXD,ELCTLT:47UF,-10+75%.35

(STANDARD

CAP.,FXD,ELCTLT:~~UF,+~O-10%,25V

(OPTION

CAP.,FXD CER DI:0,047UF,20%,50V

CAP.,FXD,ELCTLT:47UF,-10+75%,35

(STANDARD

CAP.,FXD,ELCTLT:47UF.+50-10%,25V

(OPTION

CAP.,FXD CER DI:O.O47UF,20%,50V

CAP.,FXD,CER DI:O.~UF,~O%,~OV

CAP.,FXD,ELCTLT:lUF,+75-10%,50V

(OPTION CAP.

(OPTION

CAP.,FXD,PLSTC:O.IUF,~%,~~~V

CAP.,FXD,CER DI:O.lUF,20%,5OV

CAP.,FXD CER DI:O.O47UF,20%,5OV CAP.,FXD CER ~I:0.047UF,20%,50V

CAP.,FXD,CER DI:O.IUF,~~%,~OV

CAP.,FXD,MICA D:O.O01UF,1%,~0OV CAP.,FXD,MICA ~:0.001UF,lX,100V

CAP.,FXD,ELCTLT:~OUF,+~O-IO%,~~V

CAP.,FXD,CER ~1:0.1~F,20%,50V CAP.,FXD,CER DI:O.lUF,20%,50V SEMICOND

ONLY)

02

ONLY)

02

ONLY)

02

,FXD,ELCTLT:~.~UF,~O%,~OV

ONLY)

02

ONLY)

DEVICE:SILICON,30V,I50MA

WDC

Scans

by

ARTEK

MEm

-

REV

DEC

1981

Replaceable Electrical Parts-AA

501

Component

No.

Tektronix

Part

No.

SerialIModel

Ef

f

No.

Dscont

Mfr

Name

&

Description

SEMICOND

(OPTION

SEMICOND (OPTION SEMICOND

(OPTION

SEMICOND (OPTION SEMICOND SEMICOND SEMICOND SEMICOND

SEMICOND DEVICE:SW,SI,40V,200MA 03508 DE140 (OPTION SEMICOND (OPTION SEMICOND SEMICOND

SEMICOND

SEMICOND SEMICOND SEMICOND SEMICOND

SEMICOND SEMICOND LAMP,INCAND:14V,O.O8A LAMP,INCAND:14V,O.O8A

FUSE,CARTHIDGE:3AG,lA,250V,FAST-BLOW FUSE,CARTRIDGE:3AG,lA,250V,FAST-BLOW

DEVICE:SILICON,30V,150MA DEVICE:SILICON,30V,150MA

02

ONLY)

DEVICE:SILICON,30V,150MA

02 ONLY)

DEVICE:SILICON,15V,HOT CARRIER 50434 5082-2672

02 ONLY)

DEVICE:SILICON,15V,HOT CARRIER 50434 5082-2672

02 ONLY)

DEVICE:SILICON,30V,l5OMA DEVICE:SILICON,30V,l5OMA DEVICE:SILICON,30V,l5OMA DEVICE:SILICON,30V,l5OMA

02

ONLY)

DEVICE:SILICON,30V,150MA

02

ONLY)

DEVICE:SILICON,3OV,l5OMA

DEVICE:SILICON,3OV,150MA

DEVICE:SILICON,30V,I50HA DEVICE:SILICON,3OV,150MA DEVICE:SILICON,3OV,150MA DEVICE:SILICON,3OV,150HA

DEVICE:SILICON,3OV,l5OMA DEVICE:SILICON,30V,150MA

DEVICE:SILICON,30V,I50MA

DEVICE:SILICON,30V,150MA

Code

Mfr

Part

01295 1N4152R 01295 lN4152R

01295 1N4152R

01295 1N4152R 01295 1N4152R 01295 1N4152R 01295 1N4152R

01295 lN4152R

01295 1N4152R 01295 1N4152R

01295 1N4152R 01295 1N4152R 01295 lN4152R 01295 1N4152R 01295 1N4152R 01295 1N4152R

01295 1N4152R 01295 1N4152R 08806 2182D 08806 2182D 71400 AGC 71400 AGC

1

Number

FUSE,CARTRIDGE:3AG,IA,250V,FAST-BLOW

CONTACT SET,ELE:R ANGLE,0.250L,STRIP OF 36 CONTACT CONTACT CONTACT CONTACT

CONTACT CONTACT

TRANSISTOR:SILICON,JFE,N-CHANNEL

TRANSISTOR:SILICON.NPN,SEL

(OPTION

TRANSISTOR:SILICON,NPN 07263 SO32677

TRANSISTOR:SILICON,PNP RES, ,FXD,CMPSN: 100 OHM,5% ,0.25W 01121 CB1015

(OPTION

RES.,FXD,FILM:24.3K OHM,1%,0.125W 91637 MFF1816G24301F RES.,FXD,FILM:IOK OHM,IX,O.l25W 91637 MFF1816G10001F RES.,FXD,FILM:4.99K OHM,lX,O.I25W 91637 MFF1816G49900F

SET,ELE:R ANGLE,O.Z5OL,STRIP OF 36 22526 65524-136 SET,ELE:R ANGLE,0.250L,STRIP OF 36 22526 65524-136 SET,ELE:R ANGLE,O.Z5OL,STRIP OF 36 SET,ELE:R ANGLE,0.250L,STRIP OF 36 22526 65524-136

SET,ELE:R ANGLE,O.25OL,STRIP OF 36 22526 65524-136 SET,ELE:R ANGLE,0.250L,STRIP OF 36 22526 65524-136

02

ONLY)

FROM MPS6521 04713 SPS8801

71400 AGC 22526 65524-136

22526 65524-136

01295 SFB8129

27014 2N2907A

1

REV

DEC

1981

Scans

by

ARTEK

MEDU

-

Replaceable Electrical Parts-AA

501

Com~onent

No.

Tektronix

Part

No.

SerialIModel

Eff

No.

Dscont

Name

8

Descriotion

RES.,FXD,FILM:lO.2K OHM,1%,0.125W

t

OPTION

RES.,FXD,FILM:ZK OHM,1%,0.125W (OPTION RES.,FXD,FILM:lIK OHM,1%,0.125W (OPTION 02 ONLY)

RES.,FXD,FILM:llK OHM,IX,O.I25W (OPTION 02 ONLY) RES.,FXD,FILM:ZK OHM,1%,0.125W (OPTION 02 ONLY) RES.,FXD,FILM:I~.IK OHM,l%,O.I25W

(OPTION

RES.,FXD,FILM:19.1K OHM,I%,O.l25W

(OPTION 02 ONLY)

RES.,FXD,FILM:19.1K OHM,1%,0.125W

(OPTION 02 ONLY)

RES.

(OPTION 02 ONLY)

RES.,FXD,FILM:ZK OHM,l%,0.125W RES.,FXD,FILM:ZK OHM,l%,O.I25W RES.,FXD,FILM:ZK OHM,l%,0.125U RES.,FXD.FILM:ZK OHM,1%,0.125W RES.,FXD,CMPSN:IOOK OHM,5%,0.25W RES. ,FXD,CMPSN: 1K OHM,5%,0.25W

02

ONLY)

02

ONLY)

02

ONLY)

,FXD,FILM:lO.5K OHM,l%,O.l25W

Mfr

Code

Mfr

Part

Number

RES.,FXD,FILM:IOK OHM,1%,0.125W RES.,FXD,FILM:IOK OHM.lX.0.125W

RES.,FXD,FILM:15.8K OHM,0.25%.0.125W

(OPTION

RES.,FXD,CMPSN:360K OHM,5%,0.25W (OPTION 02 ONLY)

RES.,VAR,NONWIR:25K OHM,20%,0.50W

(OPTION

RES.,FXD,FILM:2.87K OHM,1%,0.125W (OPTION 02 ONLY) RES.,FXD,FILM:10.2K OHM,I%,0.125W (OPTION 02 ONLY)

02

ONLY)

Scans

by

ARTEK

MEDL4

=>

REV

DEC

1981

Replaceable Electrical Parts-AA

501

Component

A15R1220

A15R1221 A15R1222 A15R1223 A15R1224 A15R1230

No.

Tektronix

Part

No.

321-0363-00 321-0244-00

321-0283-00 321-0374-00 321-0405-00

321-0296-00

-----

SerialtModel

Ef

f

No.

Dscont

Name

&

Description

RES.,FXD,FILM:59K OHM,1%,0,125W RES.,FXD,FILM:3.4K OHM,lX,O.l25W

RES.,FXD,FILM:8.66K OHM,1%,0.125W RES.,FXD,FILM:76.8K OHM,1%,0.125W RES.,FXD,FILM:162K OHM,lX,O.l25W

RES.,FXD,FILM:11.8K OHM,l%,O.l25W

(OPTION

02

ONLY)

Mfr

Code

91637 91637

91637

91637 91637 91637

Mfr

Part

Number

MFF1816G59001F MFF1816G34000F MFF1816G86600F MFF1816G76801F

MFF1816G16202F

MFFl816G11801F

RES.,FXD,CMPSN:lOO OHM,5%,0.25W RES.,FXD,CMPSN:24OK OHM,5%,0.25W (STANDARD ONLY) RES.,FXD,CMPSN:680K OHM,5%,0.25W (OPTION 02 ONLY) RES.,FXD,CMPSN:24K OHM,5%,0.25W

RES. ,FXD,FILM:I62K OHH,l%,O.l25W

(OPTION

RES.,VAR,NONWIR:25K OHM,20%,0.50W

(OPTION

RES.,FXD,CMPSN:5.1K OHM,5%,0.25W

(OPTION 02 ONLY)

RES.,FXD,FILM:93,1K OHM,l%,0.125W

(OPTION 02 ONLY)

02 02

ONLY) ONLY)

REV

DEC

1981

Scam

by

AR

TEK

MEDIA

r>

Replaceable Electrical Parts-AA

501

Component

No.

Tektronix

Part

No.

SerialIModel

Eff

No.

Dscont

Name

&

Description

RES.,FXD,CMPSN:Z.ZM OHM,5%,0.25W

(OPTION 02 ONLY) RES.,FXD,FILM:412 OHM,l%,O.l25W (OPTION 02 ONLY) RES.,FXD,CMPSN:lOOK OHM,5%,0.25W

(OPTION

RES.,FXD,CMPSN:270 OHM,5%,0.25W (OPTION

RES.,FXD,CMPSN:IOK OHM,5%,0.25W

RES. ,FXD,CMPSN: 15K OHM,5% ,0.25W RES.,FXD,CMPSN:15K OHM,5%,0.25W RES.,FXD,CMPSN:lOOK OHM,5%,0.25W

02

ONLY)

Mfr

Code

Mfr

Part

Number

RES.,FXD,CMPSN:lOO OHM,5%,0.25W RES.,FXD,CMPSN:lOO OHM,5%,0.25W RES.,FXD,CMPSN:IK OHM,5%.0.25W RES. ,FXD,CMPSN: IK OIM,5%,0.25W RES.,FXD,CMPSN:lK OHM,5%,0.25W RES.,FXD,CMPSN:IK OHM,5%,0.25W

RES. ,FXD,FILM:600 OHM, 1% ,O. 125W RES.,FXD,FILM:226 o~~,l%,O.l25W RES.,FXD,CMPSN:4.7K OHM,5%,0.25W

RES.,FXD,CMPSN:4.7K OAM,5%,0.25W

SWITCH,PUSH:5 BUTTON,4,2 SWITCH,PUSH:5 8UTTON,2 6 4 POLE,FILTER

TERM,TEST P0INT:RRS CD PL MICROCIRCUIT,LI:DUAL BI-FET OP-AMPL,8 DIP

Scans

by

ARTEK

MEDL4

=>

6

0

POILE,DISTOR

ADD

DEC

1981

Com~onent

No.

Tektronix

Part

No.

SeriallModel

Eft

No.

Dscont

Replaceable Electrical Parts-AA

Mf

r

Name

&

Description

MICROCIRCUIT,LI:TRUE RMS CONVERTER 24355 AD536AJH

MICROCIRCUIT,LI:DUAL BI-FET OP-AMPL.8 DIP 01295 TL072CP

MICROCIRCUIT,LI:OPERATIONAL

(OPTION

MICROCIRCUIT,LI:OPERATIONAL

(OPTION

02 02

ONLY)

AMP,JFET INPUT 27014 LF351N AMPL

AMPLIFIER 18324 NE5534N

Code

Mfr

Part

01

295 TL074CN

Number

501

MICROCIRCUIT,LI:OPERATIONAL

MICROCIRCUIT,LI:DUAL BI-FET OP-AMPL,8 DIP 01295 TL072CP

(STANDARD

MICROCIRCUIT,LI:OPERATIONAL

(OPTION

MICROCIRCUIT,LI:OPERATIONAL

(OPTION 02 ONLY) MICROCIRCUIT,DI:HEX CONT BOUNCE ELIMINATOR 80009 156-0763-00 MICROCIRCUIT,DI:QUAD D FF 80009 156-0931-00 MICROCIRCUIT,LI:DUAL OPERATIONAL AMPLIFIER 18324 MC1458V MICROCIRCUIT,DI:QUAD D FF 80009 156-0931-00

MICROCIRCUIT,LI:VOLTAGE REGULATOR 07263 MICROA7805UC MICROCIRCUIT,DI:8-CHAN MUX

MICROCIRCUIT,LI:QUAD-COMP,SGL

SEMICOND SEMICOND SEMICOND DEVICE:ZENER,18V,5% AT 7MA 80009 152-0590-00

SEMICOND

ONLY)

02

ONLY)

DEVICE:ZENER,0.4W,6.8V,5% DEVICE:ZENER,0.25W,6.2V,5%

DEVICE:ZENER,18V,5% AT 7MA 80009 152-0590-00

AMP,JFET INPUT 27014 LF351N

AMP,JFET INPUT 27014 LF351N AMP,JFET INPUT 27014 LF351N AMPL 01295 TL074CN

80009 156-0513-00

SUPPLY 27014 LM339N

80009 152-0647-00 80009 152-0486-00

ADD

DEC 1981

Scans

by

ARTEK

MEDL4

-

Tektronix SerialIModel No.

Component No. Part No. Ef f Dscont Name

CHASSIS PARTS

&

Description

Mfr

Code Mfr Part Number

S1521

263-1187-00

SW CAM ACTR AS:LEVEL RANGE

Scans

by

ARTEK

MEDLQ

==-

ADD

DEC

1981

Section

DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS

Symbols

Graphic symbols and class designation letters are

based on

ANSI Standard Y32.2-1975.

Logic symbology is based on ANSl Y32.14-1973 in terms of positive logic. Logic symbols depict the logic function performed and may differ from the manufacturer's data.

The

overline on a signal name indicates that the signal

performs its intended function when it is in the low state.

Abbreviations are based on ANSl Y1.l-1972.

Other

ANSI standards that are used in the preparation

of diagrams by Tektronix, Inc. are: Resistors = Ohms

The information and special symbols below may appear in this manual.

Y14.15, 1966 Drafting Practices. Y14.2, 1973

Line Conventions and Lettering.

Y10.5, 1968 Letter Symbols for Quantities Used in

Electrical Science and Electrical Engineering.

American National Standard Institute

1430 Broadway

New York, New York 10018

Component Values

Electrical components shown on the diagrams are in

the following units unless noted otherwise:

Capacitors

=

Values one or greater are in picof,arads (pF). Values less than one are in microfarads

(PF).

(n).

8-AA

501

Assembly Numbers and Grid Coordinates

Each assembly in the instrument is assigned an

.assembly number

appears on the circuit board outline on the diagram, in the

title for the circuit board component location illustration,

and in the lookup table for the schematic diagram and corresponding component locator illustration. The Replaceable Electrical Parts in numerical sequence; the components are listed by component number *(see following illustration for constructing a component number).

Funct~on Block T~tle

(Dot lndlcates swltch closure)

Clrcult Board

Etched Outl~ned In Black

Refer to Waveform

Test Voltage

PIO-Part of

clrcult board Assembly Number Tektronix Part No

for

clrcult boards

REV

DEC

1981

(e.g., A20). The assembly number

list isarranged by assemblies

A

Internal

Screwdriver

Adlustrnent

Board Name

670-XXXX-XX R330

#

B

The schematic diagram and circuit board component location illustration have grids. A lookup table with the grid coordinates is provided for ease of locating the component. Only the components illustrated on the facing diagram are listed in the lookup table. When more than one schematic diagram is used to a circuit board, the circuit board

illustratethecircuitry on

~llustration may only

appear opposite the first diagram on which it was il-

lustrated; the lookup table will list the diagram number of

other diagrams that the circuitry of the circuit board appears on.

C

0-

SYNC

D

GENERATOR

@

Modifled Componenl (De-

~n Grey, or Wlth Grey

picted Outllne) - See Parts Llst

Strap or Link

Plug to E.C. Board

l

ndicators

Coaxial connectors:

male

female Plug Index; signifies pin No.

External Screwdriver Adj

Shielding

Selected value, see Parts and Maintenance Section for Selection Criteria

Decoupled or Filtered Voltage

Refer to Diagram Number

Schematic Name and Number

1

L~st

Scam

by

ARTEK

MEDL4

=>

NOTCH

I

LTER

F

CONTROL

AUTOMATICALLY

TUNES

NOTCH FILTER

I

A14

A

I

+

*

INPUT

-

0

INPUT

STAGE

PROCESSES

l

NPUT

SIGNAL

A14

l

NPUT

MONITOR

0-3VRMS

)

GAIN FOR CONSTANT

A14

O

AGC

ADJUSTS

OUTPUT

-

2v~ns

-

FUNDAMENTAL

A14

FREQUENCY

DISCRIMINATOR

SELECTS NOTCH

FILTER

INTERMODULATION

MEASUREMENTS

FUNCTION AUXILIARY

OUTPUl

?

~~>~~k

REMOVES

FREQUENCY

RANGE

DISTORTION

8-lvRns

A

DISTORTION

AMPL 1

F [ ER

A14

A

a-4VRMS

F 1 LTERS RMS/AVG

RESPONSE

OF SIGNAL TO

MEASURE- LEVEL

MENT

A15

1

DETECTS CONVERTS TO

A15 A12

CONTROL

I

C

LOG

AUTORANGING AND DISPLAY

FORMATTING

0

POVER

SUPPLY

1

-*

dB

dD

SCALE CONVERTER

A

v

dBR

CONTROL

ZERO POINT

OF

dB

CONVERTER

A12

D I SPLAY

DIGITAL

A10

BLOCK

D

I

AGRAM

IMD

DVM

Option (01)

Sesllon

R1218

Volts Cal

3

Step

Scans

AA

501 Circuit Boards

by

ARTEK

MEDL4

=-=.

RlOOl

SMPTE Cal

Step

9

D&itally remastered by ArhkMedia

@

2W-2-

ADJUSTMENT LOCATIONS

R1501

-20 dB Adj Step

5

R1421

Diff Freq Cal

Step 11

All adjustments on this board are accessed from the top of the instrument.

Fig.

8-2.

Adjustment and CCIF-AUTO-SMPTE/DIN Jumper Position Location for Control & IMD Option Boards.

R1245

Input Zero

Step 5

R4246

Offset

Step

Gait?

6

R1341

OdD Adj dBr Zera

Step

5

R1445

Step

T

Tektronix AA 501 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

www.artekmedia.com

SPECIFICATION

OPERATING INSTRUCTIONS

THEORY OF OPERATION

CALIBRATION

MAINTENANCE

OPTIONS

ELECTRICAL PARTS