Tektronix 213 DMM Manuale utente

[

TektronD<®

COMMITTED

EXCELLENCE

WARNING

THE FOLLOWING SERVICING INSTRUCTIONS

ARE

FOR

USE BY QUALIFIED PERSONNEL ONLY.

TO AVOID PERSONAL INJURY,

NOT

PERFORM ANY SERVICING OTHER THAN THAT

CONTAINED

OPERATING INSTRUCTIONS

UNLESS YOU ARE QUALIFIED TO

SO.

PLEASE CHECK FOR CHANGE INFORMATION

THE REAR OF THIS MANUAL.

213

DMM

OSCILLOSCOPE

WITH OPTIONS

SERVICE

INSTRUCTION

MANUAL

Tektronix, Inc.

P.O. Box 500

Beaverton, Oregon 97077

070-1481-00

Product Group 40

Serial

Number

_____

First Printing JAN 1975

Revised

JUL

1989

publication may not be reproduced

any form without the written

permission of Tektronix, Inc.

Products of Tektronix, Inc. and its subsidiaries are covered

U.S. and

foreign patents issued and pending.

TEKTRONIX,

TEK,

SCOPE-MOBILE, and

are registered trademarks

of Tektronix, Inc.

Printed

U.S.A. Specification and price change privileges are reseNed.

INSTRUMENT SERIAL NUMBERS

Each instrument has a serial number

a panel insert, tag, or stamped on

the chassis. The first numberor letterdesignatesthe country ofmanufacture.

The last five digits of the serial number are assigned sequentially and are

uniqueto each instrument. Those manufactured inthe United States have six

unique digits.

The

country of manufacture is identified as follows:

8000000 Tektronix, Inc., Beaverton, Oregon, U.S.A.

HK0OO00

TEKTRONIX, INC., Hong Kong

G100000 Tektronix Guernsey, Ltd., Channel Islands

E200000 Tektronix United Kingdom, Ltd., Marlow

J300000 Sony/Tektronix, Japan

H700000 Tektronix Holland,

NV,

Heerenveen,

The Netherlands

[

TABLE

CONTENTS

List

Illustrations

List

Tables

SECTION 1 SPECIFICATIONS

SECTION 2 OPERATING INSTRUCTIONS

Safety

Information

SECTION 3

REV A

JAN

1980

Controls,

Connectors,

and

Indicators

Side Panel

Front

Panel

Rear Panel

Probe Storage

Probe Characteristics

200-Series

Instruments

Operating Power

Information

Internal

Battery

Operation

Battery

Charging

Power Line

Operation

Operating

Temperature

Operators

Adjustments

and

Basic Displays

Operators

Adjustments

Digital

Multimeter

Displays

Oscilloscope Displays

THEORY

OF OPERATION

Digital Logic

Block Diagram Description

Circuit Description

Input

Section

Input

Switching

Voltage Coupling

and

Attenuation

Current

Shunt

Resistors

Ohms Converter

Input

Buffer Amplifier

Digital Multimeter

Functions

Active Filter

Gm Converter

PAGE

1-1

2-1

2-2

2-3

2-4

2-5

2-6

3-1

3-2

3-3

213

Service

213 Service

TABLE

CONTENTS

(CONT.}

SECTION 3 THEORY OF OPERATION (continued)

RMS

Converter

A/D

Converter

Character

Generator

Polarity Sign

Control

Overrange Circuitry

Oscilloscope

Functions

Preamplifier

Sweep

Generator

and

Trigger

Output

Section

Vertical

Output

Amplifier

Horizontal

Output

Amplifier

2-Axis Amplifier

Crt

Circuit

Power

Supply

Inverter

and

Regulator

Low-Voltage

Shutdown

Circuit

Low-Voltage Rectifier-Filter

High Voltage

Battery

Charger

Line

Input

Battery

Charger

Converter

Battery

Charger Regulator

SECTION 4

MAINTENANCE

Tektronix

Field Service

Preventive

Maintenance

Recalibration

Cleaning

Visual

Inspection

Lubrication

Corrective

Maintenance

Obtaining

Replacement

Parts

Soldering

Techniques

Component

Removal

and

Replacement

PAGE

3-4

3-5

3-7

3-9

3-10

3-11

3-12

3-13

4-1

4-2

4-3

[

213

Service

TABLE

CONTENTS

(CONT.)

PAGE

SECTION 4

MAINTENANCE

{continued}

Troubleshooting

4-13

Troubleshooting

Equipment

4-13

Troubleshooting

Aids 4-14

Troubleshooting

Procedure 4-15

Instrument

Repackaging 4-17

SECTION 5 PERFORMANCE CHECK 5-1

Equipment

Required 5-1

Equipment

Preparation 5-1

Index

Performance Check

Procedure

5-1

SECTION 6

CALIBRATION

6-1

Preliminary

Information

6-1

Calibration Interval 6-1

Tektronix

Field Service 6-1

Using This Procedure 6-1

Equipment

Required 6-1

Special Calibration

Fixtures

6-1

Calibration

Equipment

Alternatives 6-1

Equipment

Preparation

6-3

Index

Calibration Procedure 6-3

SECTION 7 INSTRUMENT OPTIONS 7-1

SECTION 8 REPLACEABLE

ELECTRICAL

PARTS

SECTION 9

DIAGRAMS

SECTION 10 REPLACEABLE

MECHANICAL

PARTS

CHANGE

INFORMATION

L @

iii

213

Service

LIST

ILLUSTRATIONS

FIGURE NO.

Frontispiece

213

DMM

Oscilloscope.

1-1

Dimensional Drawing

2-1

Side panel.

2-2

Front

panel.

2-3 Rear panel.

2-4 Probe storage.

2-5 Probe Body Assembly identification.

3-1

Ohms Converter detailed block diagram.

3-2 RMS Converter detailed block diagram.

3-3 A/D Converter detailed block diagram.

3-4 A/D Converter timing diagram.

3-5 Character

Generator

Z-axis

output.

3-6 Overrange circuitry simplified schematic diagram.

3-7 Overrange timing diagram.

3-8 Power

Supply

detailed block diagram.

4-1

Typical cam switch.

4-2 Circuit board locator.

4-3 Location

screw securing cabinet halves.

4-4 Power cord and

probe

lead routing.

4-5 Power

Supply

Board disassembly.

4-6

Attenuator

and

Function

Board disassembly.

4-7 Secondary Power Supply disassembly.

4-8 Power-I ine fuse location.

4-9 Current (mA)

input

fuse location.

4-10 Terminal

connector

holder.

4-11 Installation

extender

cards.

4-12 EIA color

code

example.

Section 9 figures are located near their associated diagrams

the

foldout

pages.

9-1

9-2

9-3

9-4

9-5

9-6

9-7

9-8

Semiconductor

lead configurations.

Power

Supply

test

points and

adjustment

locations.

Side Panel

adjustment

locations.

A/D Converter circuit board

adjustment

locations.

Block Diagram.

Attenuator

circuit board (grid locator).

Function

circuit board (grid locator).

Attenuator

circuit board voltage and waveform

test

points.

PAGE

1-10

2-1

2-2

2-3

2-4

3-3

3-4

3-5

3-6

3-7

3-8

3-9

3-12

4-2

4-3

4-4

4-7

4-8

4-9

4-11

4-12

4-14

4-16

FIGURE NO.

9-9

9-10

9-11

9-12

9-13

9-14

9-15

9-16

9-17

9-18

9-19

9-20

9-21

9-22

9-23

9-24

TABLE NO.

1-1

1-2

1-3

1-4

1-5

1-6

2-1

3-1

4-1

5-1

5-2

5-3

5-4

5-5

5-6

5-7

5-8

6-1

6-2

6-3

6-4

6-5

6-6

6-7

6-8

6-9

6-10

6-11

LIST

ILLUSTRATIONS

(CONT.)

Function

circuit board voltage and waveform

test

points.

Function

circuit board (grid locator)

Function

circuit board voltage and waveform

test

points.

A/D Converter circuit board (grid locator)

A3 A/D Converter circuit board voltage

and

waveform

test

points.

A4 Amplifier circuit board (grid locator)

Attenuator

circuit

board (grid locator)

Amplifier circuit board voltage and waveform

test

points.

A5 Power

Supply

circuit board (grid locator).

Secondary

Power

Supply

circuit board (grid locator).

A5 Power

Supply

circuit board voltage and waveform

test

points.

Secondary

Power Supply voltage

and

waveform

test

points.

A5 Power

Supply

circuit board (grid locator).

A5 Power

Supply

circuit board voltage

and

waveform

test

points.

Amplifier circuit board voltage and waveform

test

points.

Troubleshooting Chart.

LIST

TABLES

Digital Multimeter Electrical Specifications

Oscilloscope Electrical Specifications

Power Requirements

Common

Isolation Protection

Environmental

Physical

Battery Charge Capacity

NAND

Gate

Logic

Chart

Power

Supply

Operating Tolerances

Vertical Deflection Accuracy

Sweep Timing Accuracy

Sweep Linearity

Voltage Measurement Accuracy

Current

Measurement Accuracy

Resistance Measurement Accuracy

RMS Voltage Measurement Accuracy

RMS

Current

Measurement Accuracy

Equipment

Required

Power

Supply

Voltage Tolerance

Vertical Deflection Accuracy

Sweep Timing Accuracy

Sweep Linearity

Voltage Measurement Accuracy

Current

Measurement Accuracy

Resistance Measurement Accuracy

RMS

Voltage Measurement Accuracy

Alternate RMS Voltage Measurement Accuracy

RMS

Current

Measurement Accuracy

PAGE

1-1

1-5

1-8

1-9

1-10

2-5

3-1

4-16

5-3

5-5

5-6

5-8

5-9

6-2

6-5

6-8

6-11

6-14

6-15

6-16

6-17

213

Service

213 Service

213

DMM

Oscilloscope

£.

213DMM

1481•5

Section

1-213

Service

SPECIFICATIONS

The

213

DMM

Oscilloscope

portable

measurement

instrument

that

designed

be used as

either

a digital

multimeter

oscilloscope.

Function

selection

made

with

front-panel

pushbutton

switch.

Voltage

measurements

are

made

with

the

integral

high-impedance

probe,

while

current

and

resistance

measurements

are

made

through

low-impedance

banana

jack

in-

put

the

side

panel.

Operating

power

provided

internal

rechargeable

batteries

from

power-line

voltage.

integral

battery

charger

recharges

the

batteries

whenever

the

instrument

connected

the

power

lin~.

The

digital

multimeter

measures

voltage

and

current,

and

resistance.

features

true

rms

responding

circuitry

when

making

voltage

current

measurements.

Full scale

measurement

ranges

are

0.1

1000

V, 0.1

1000

mA,

and

with

200%

full scale

overrange

all

ranges

except

1000

The

crt

readout

a 3½-digit

display

containing

auto-

matic

polarity

indicator,

and

decimal

point

which

positioned

the

range

selector

switch.

Overrange

indicated

unblanked

readout

display

consisting

scrambled

character

segments.

The

oscilloscope

function

provides

a single

channel,

1 MHz vertical

deflection

system

with

calibrated

deflection

factors

100

/division

with

reduced

bandwidth

400

kHz

the

and

ranges.

Current

deflection

factors

are

µA

100

mA/division

from

400

kHz

with

reduced

bandwidth

200

kHz

the

µA

and

µAl

division ranges.

The

horizontal

deflection

system

provides

calibrated

sweep

rates

from

0.5

µs/division,

with

a variable

sweep

magnifier

that

provides

uncalibrated

sweep

rates

least

times

faster

than

the

selected

rate.

The

trigger

input

either

internal

external

and

provides

stable

triggering

over

the

full

bandwidth

the

vertical

defl~ction

system.

The

oscillo-

scope

crt

display

a 6 x

division

graticule

with

each

division

approximately

0.2

inches

(0.5

cm).

The

following

instrument

specifications

apply

over

ambient

temperature

range

-15°

+55°

C unless

otherwise

speci-

fied.

Warm

time

for

specified

accuracies

minutes.

the

instrument

already

stabilized

the

ambient

temperature,

warm

time

seconds.

TABLE

1-1

Digital Multimeter Electrical Specifications

Characteristic Performance Requirement

AND

RMS

VOLTS

Range 0.1 V

1000

Resolution

100

µVat

0.1 V full scale

(reading

must

least

10%

full scale)

Input

Resistance

within

Input

Capacitance

0.1 V

Approximately

150

100

1000

Approximately

100

Input

Leakage

Current

200

max

30°C

less

with

less

change

from

open

shorted

probe

1-1

Specifications-213 Service

TABLE

1-1

(continued)

Digital Multimeter Electrical Specifications

Characteristic Performance Requirement

Max Safe

Input

Voltage Ac component 1 MHz or

less

0.1

10 V

Coupled 500 V

(de

+ peak ac).

Ac Coupled 800 V

(de+

peak ac). Max

component

500 V peak

100 V and 1000 V 800 V

(de+

peak

ac)

VOLTS

Accuracy (+20°C

+30°C, batteries

only)

NOTE

When operating

power-line voltage,

add

10°C

to the

ambient

temperature

for

internal

heating

before

computing

accuracy

0.1

V Within 0.1%

reading ±3 counts. Temp Coef

(within

0.015%

reading+

0.04%

full

scale)

per

°C

1 V

Within

0.1%

reading

±1

count. Temp coef

(within

0.01%

reading+

0.01%

full

scale) per

°C

10 V

and

100 V Within 0.15%

reading

±1

count. Temp Coef

(within

0.015%

reading+

0.01%

full

scale)

per

°C

1000

V Within 0.2%

reading

±1

count. Temp Coef

(within

0.02%

reading+

0.01%

full

scale)

per

°C

Settling Time 1.5 seconds

for

reading

within

0.1

Normal Mode Rejection Ratio

-60

dB at

Hz,

-3

dB at 1 Hz

RMS

VOLTS

Temp Coef

(within

0.05%

reading+ 0.1%

full

scale)

per

°C

Accuracy (+20°C

+30°C, batteries

only)

NOTE

When operating on power-line voltage,

add

10°C

to the

ambient

temperature

for

internal

heating

before

computing

accuracy

NOTE

Within%

reading shown ±5 counts at frequency shown:

Crest

factor<

and

reading

least

10%

40 Hz 1 kHz

full

scale.

Accuracy

limits

increase

linearly

for

crest

factor

over

twice

indicated

to to

limits

for

crest

factor

1 kHz

kHz

0.1

V 2.5% 1.5% 3.5%

1 V

1% 1%

10 V

100 V

1% 1%

1000

1-2 REV APR 1988

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