Tektronix 7D13 Manual de usuario

SECTION



SPECIFICATION

SECTION



OPERATING

INSTRUCTIONS

SECTION



CIRCUIT

DESCRIPTION

SECTION



MAINTENANCE

SECTION



CALIBRATION

CHANGE

INFORMATION

Page

Introduction



1-1

Electrical

Characteristics



1-1

Environmental

Characteristics



1-2

Physical Characteristics



1-2

Installation



2-1

MODE/RANGE

Control

and

Front

Panel

Connectors



2-1

First

Time

Operation



2-2

General

Operating

Instructions



2-4

Introduction



3-1

Block

Diagram

Description



3-1

Detailed

Circuit

Description



3-2

Preventive

Maintenance



4-1

Troubleshooting



4-1

Replacement

Parts



q-4

Component

Replacement



4-q

Recalibration

After

Repair



4-5

ntrod

ction



5-1

Test

Equipment

Required



5-1

Part

I-~-Performance

Check



5-3

Part

II--Adjustment



5-7

SECTION



ELECTRICAL

PARTS

LIST

Abbreviations

and

Symbols

Parts

Ordering

Information

SECTION



DIAGRAMS

AND

CIRCUIT

BOARD

ILLUSTRATION

Symbols

and

Reference

Designators

Voltage

and

Waveform

Conditions

SECTION



MECHANICAL

PARTS

LIST

Mechanical

Parts

List

Information

Index of

Mechanical

Parts

Illustrations

Mechanical

Parts

List

Accessories

Abbreviations

and

symbols

used

this

manual

are

based on

taken

directly

from

IEEE

Standard

260

"Standard

Symbols

for

Units",

MIL-STD-12B

and

other

standards

the

electronics

industry

Change

information,

any,

located

the

rear

this

manual

7D13

INPUT

.5kV

MAX

GND

HIGH

COM

PROBE

MA%

GND

.-_

xTeow~x

DIGITAL

MULTIMETER

7D13

Fig

1-1

7D13

Digital

Multimeter

Change

information,

any,

affecting

this

section

will

found

the rear

this

manual

IntroduCtlon



connectors

regardless

the

setting

the

MODE/RANGE

control

'The

7D13

Digital

Multimeter

plug-in

unit

designed

for

use

with

Tektronix

7000-series

Oscilloscopes

equipped

with

readout

system

The

7D13

can

used

measure

voltage,

current,

resistance,

and

temperature

TABLE

1-1

ELECTRICAL

CHARACTERISTICS

The

output

the

7D13

presented

digital

readout

the

CR`f

the

associated

oscilloscope,

along

with

infor-

mation

encoded

the

other

plug-in

units

This

display

written

the

CRT

beam

time-shared

basis

with

the

analog

waveform

display

from

the

other

plug-in

units

Temperature

measurements

are

made

with

the

P6058



h~he

electrical

characteristics

listed

Table

1-1

are

valid

probe

or a

temperature-sensing

device

connected

the



over the

stated

environmental

range

for

instruments

cali-

front-panel



PROBE



connector



analog

temperature



brated

ambient

temperature

+20

+30

and

signal

output

available

the

front-panelTEMP

OUT



after

20 minute

warmup

unless

otherwise noted

Characteristic



Performance

Requirement



Supplemental

Information

DCVO

LTS

Range



0 to

1000

volts



Four

full-scale

ranges of

±2

.000

±20

.00 V,

±200

and

±1000

Accuracy

+15

+40



Within

.1%

reading±1

count

+50



Within

.2%

reading

±2

counts

Polarity



Automatic

selection

and

display

Input

Resistance



MS2

within

all

ranges

Maximum

Non-Destructive



1000

peak

between

INPUT

con-



For

Maximum

Input

Voltage

Input

Voltage



nectors

1500

peak

between



rating

for voltage

measurements

with

either

connector

andground



voltage/temperature

probe,

see

probe

instruction

manual

CURRENT

Range



to 2

Amperes



Four

full-scale

ranges of

±2

.000

mA,

.00

mA,

±200

mA,

and

2000

Accu

racy

+15

+40



Within

.5%

reading

±2

counts

+50



Within

.7%

of reading

±4

counts

7D13

Polarity



Auto

matic

lection

and

dis

.-_



.~.-_~

. .

______

.___

.,~~_

.____

. .

.___

.~~

.~-_



.__m_____V___



.__



.~_

~___

Specification-7D13

Characteristic

CURRENT~(cont)

._~

Input

Resistance

Maximum

Non-Destructive

Input

urrent

RESISTANCE

Range

Accuracy

+15

+40

+50

Overload

Protection

Reference

Current

Magnitude

(Amperes)

TEMPERA

TUBE

Range

Accuracy

(with

P6058

Probe)

7D13

Ambient

~femperature

Range

+15

+40

.__

.__~~Ct°

+5U°

...

.__

TEMP

OU°T

mV/

Settling

Time

Accuracy

Recycle

Time

Noise

Rejection

Normal

Mode

Rejection

Ratio

Common

Mode

Rejection

Ratio

kS2

unbalance)

TABLE

1-1

(cont)

Performance

Requirement

Amperes



Limited

fuse

and

clamping

diodes

0 to 2

MSZ



Five

full-scale

ranges of

200

S2,

2000

S2,

.00

kSt,

200

kSt,

and

2000

kSZ

Within

.5%

reading

±1

count

Within

.8%

reading

±2

counts

-55

to x-150

one

range,

Within

least

30dB

60Hz

increasing

dB/decade

least

100

;

80dB

Hz,

Supplemental

nformation

Full

Scale



Current

Limited

by60

fuse,

2_V



Full-Scale

Resistance

(ohms)

Within

+125



Measurements

above

+125

are

subject

-----_~----~------°-°

-------



probe

derating,

see

probe

instruction

Within

~+125



manual

2 kS2

--V

~200

milliseconds

measurements

second)

seconds

less

TABLE

1-2



TABLE

1-3

ENVIRONMENTAL

CHARACTERISTIC



PHYSICAL

Load

impedance

must

not

less

than

Refer



the



Specification



for



the



associated



oscillo-



Size



Fits

all

7000-series

plug-in

compartments

scope



Weight



Pound

Ounces

(797

grams)

General



with

the

function

and

use

the

MODE/RANGE

control

The

7D13

Digital

Multimeter

unit

operates

with

the



and

each

connector

brief

description

these

and

readout system

a Tektronix

7000-series

oscilloscope to



their

relationship

one

another

given

here

de-

provide

the

capability

measure

voltage,

current,



tailed

information

relating

measurement

applications

given

under

General

Operating

Instructions

resistance,

and

temperature

effectively

use

the

7D13,

the

operation

and

capabilities

the

instrument

should

known

This

section describes

the

operation

the

front-

panel

controls,

giving

first-tirrre

and

general

operating

infor-

mation

Installation

Display

Change

information,

any,

affecting

this

section

will

found

at the

rear

this

manual

The

7D13

designed

operate

any

plug-in

compart-

ment

Tektronix

7000-series

oscilloscopes

install

the

7D13

into

plug-in

compartment,

push

until

it is

seated

flush

against

the

front panel

the

oscilloscope

remove,

pull

the

release

latch

disengage

the

from

the

oscilloscope

Continue

pull

the

release

latch

re-

move

the

unit

from

the

oscilloscope

The

output

for the

7D13

Digital

Multimeter

digital

readout

display

presented

the

CRT

the

oscilloscope

which

the

unit

operated,

along

with

information

encoded

the

other

plug-in

units

This

display

written

the

CR~1`

beam

time-shared

basis

with the

analog

waveform

display

from

the

other

plug-in

units

The

digital

readout

display

for the

7D13

will

appear

the

top

division

the

CRT

location

corresponding

the

plug-in

compartment

used

There

analog

output

signal

presented

on the

CRT

;

therefore,

it is

not

necessary

select

the

7D13

with

the

oscilloscope

Vertical

Hori-

zontal

Mode

switches

The

display

consists

three

full

digits

plus

one

for

over-

ranging

The

measurement

units

and

decimal

position

the

display

are

determined

the

MODE/RANGE

switch

setting

When

the

measurement

range

use

exceeded,

the

display

blinks

indicate

over-ranging

ntroduction

The

MODE/RANGE

control

and

all

connectors

required

for

operation

the

are

located

the

front

panel

the

unit

(see

Fig

2-1

)

make

full

use

the

cap-

abilities

this

instrument,

the

operator

should

familiar

MODE/RANGE

CON°1°ROL

AND

FRONT

PANEL

CONNECI°ORS

MODE/RANGE

Fig

2-1

MODE/RANG

control

and

Front-Panel

connectors

7D13

Rotary Switch



Selects



measurement

mode



and

range

simultaneously

Two

sets

VOLTS

ranges

select

measure-

Operating

Instructions-7D13

INPUT



Binding

posts

labeled

HIGH

and



Turn

the

oscilloscope

power

and

allow

about

COM

provide

connection

of inputs



twenty minutes

warmup

time

for

resistance,

voltage,

and

current

measurements

Both

INPUT

con-

nectors

can be

floated

above

chassis



During



the



warmup



period,



set

the

controls



(ground)

potential

(see

Specifics-



follows

tion section)

TEMP

OUT

mV/

R~~2k52

meet

via

either

the

INPUT

connec-



Connect

the

oscilloscope to

power

source

which

tors

the

PROBE

connector

The



meets

the

frequency

and

voltage

requirements

the

oscil

selected

input

indicated

front



loscope

power

supply

panel

background

tint

jack

connectors

provide

analog

output

temperature mea-

surement

data

from

temperature

measuring

circuit

l"his

data

pro-

vided

regardless

the

setting

the

MODE/RANGE

control

PROBE



Four-pin,



locking

receptacle

for



MODE/RANGE



VOLTS/1kV

attaching



voltage/temperature



(INPUT

connectors)

probe

Pins

provide

connection

for

probe

power

and

signal

input

Digital

Display

Check

General

FIRST

°TIME

OPERATION



Connect

the

7D13INPUT

connectors

together

with

short piece

wire

When

shipped

from

the

factory,

the

7D13

has

been

cali-

brated

meet

the

specifications

listed

Section

and

ready

used

with

readout-equipped

Tektronix

7000-series

Oscilloscope

Steps

through 21

the

following

procedure

provide

operational

check

verify satisfactory

operation

the

unit

and

the

associated

oscilloscope

This

portion

the

procedure

intended

a quick

functional

check only

and

should

performed

each

time

the

7D13

placed

different

oscilloscope

~rhe

remainder of

the

procedure

demonstrates

the

basic

operation

the

MODE/RANGE

control

and

the

front-

panel

connectors

recommended

that

the

entire

pro-

cedure

followed

completely

for

familiarization

with

the

instrument

Operation

the

oscilloscope

described

the

oscilloscope

instruction

manual

T'he tolerances

given

for

the

digital

readout

are

for

units

being

operated

ambient

temperature

range

+15

+40

For

operation

outside

these

limits,

refer

Table

1-1

the

Specification

section

Preliminary

Instructions

Install

the

7D13

any

available

plug-in

compart-



The

readout

should

within the

limits

000

ment

7000-series

oscilloscope



001

Oscilloscope

ntensity



Counterclockwise

Readout



Off

Any

controls

not

mentioned

can be

set

desired

7D13

Advance

the

oscilloscope

Readout

control

to obtain

usable

digital

display

on the CRl'

The

display

should

appear

the upper

graticule

division

The

readout should

read

000

plus or

minus

one

count

(-001

+001

Set

the

MODE/RANGE

control

CURRENT/2

The

readout

should

read

.000

plus

minus

two

counts

.p02

.002

mA)

Set the

MODE/RANGE

control

RESISTANCE/

200

~"he

readout should

read

within the

limits

of 00

to 00

(no

polarity

indicator)

Set

the

MODE/RANGE

control

RESISTANCE/2

Set

the

MODE/RANGE

control

RESIST

ANCE/



Current

kS~

"T'he

readout

should

within

the

limits

of 0

.00

kS2

.01 k5~

Set the

MODE/RANGE

control

RESISTANCE/

200

The

readout

should

within the

limits

kS2

Set the

MODE/RANGE

control

RESIS

TANCE/2

The

readout should

within

the

limits

000

kSl

001 k

Remove

the

piece

wire

connecting

the

INPUT

connectors

together

°T`he

readout

display

(7D13

only)

will

blinking

and

will

indicate

high

value

resistance

The

unit

attempting

to meas~~re

the

resistance

between

the

INPU'T

connectors

Since

this

value

exceeds

the

MS2

range,

the

display

blinks to

indicate

over-ranging

This

concludes

the

operational

check

procedure

Resistance

Connect

pair

test

leads

the

INPU°I`

connec-



Reverse

the

test

lead

connections

; i

connect

the

tors



HIGH

test lead

the

ground

post

and

the

COM

test

lead

the Cal

connector

Connect

a 10

kS2

resistor

between

the

test

leads

(The

value

of the

resistor

not

critical

for

the

purposes



Wfhe

readout

should

read

the

same

value

voltage

this

demonstration



step

but

with

polarity

indicated

The

readout

display

will

read

the

value

the

resis-

tor

used

Set

the

MODE/RANGE

switch

RESISTANCE/

200

kS2

and

RESISTANCE/20

k52

and

notice that

the

reading

changes

include

significant

figures

Disconnect

the

COM

test lead

from

the

resistor

and

connect

the

oscilloscope

ground

post

Set

the

oscilloscope Calibrator

and

the

Rate

(Calibrator)

switch

Set

the

MODE/RANGE

switch to

CURREN

I"/2

With the

HIGH

test

lead

still

attached

the

resis-

tor,

touch

the

other

end

the

resistor

the

oscilloscope

Cal

output connector

The

readout

will

indicate

current

approxi-

mately +

Voltage

Remove

the

resistor

from

the Cal

connector and

disconnect

from

the

test

lead

Set the

MODE/RANGE

switch to

VOLTS/20

Touch

the

HIGH

test lead

the

oscilloscope

Cal

connector

The

readout

will

read

about

-0-4

.00

(the

exact

reading

will

depend

upon

the

calibration

the

oscilloscope

calibrator)

Temperature

Operating

Instructions-~-7D13

Connect

voltage/temperature

probe

such

the

P6058

the

7D13

PROBE

connector

Observe

the

pre-

cautions

relating

proper

alignment

the

connectors

given

the

Probe

instruction

manual

Set the

MODE/RANGE

control

RESISTANCE/2

kS2

and

observe

that

the

display

blinks to

indicate over-



Set the

MODE/RANGE

control

TEMPERA-

ranging



TUBE

2-3

Operating

Instructions-7D13

The

readout should

read

the

room

temperature



The

voltage

be measured can be connected

the

within the

limits

listed

Table

1-1

Section

(Alternate



7D13

via

the

INPU1

connectors

or a

compatible

probe

con-

Procedure

Place

the

probe

environment

having



nected

the

PROBE

connector

Observe

the

Maximum

known

temperature



Safe

Input Voltage

limits

given

Table

1-1

the

Specifi-

cation

section

for

all

measurements

Connect

the

INPUT

connectors

the

TEMP

OUT

jack

connectors

with the

test

leads

The

COM

connector



measure

voltages

via

the

INPUT

connectors,

use

should

be connected

the

right

hand

TEMP

OUT

connec-



the

following

procedure

for

(ground)

Set

the

MODE/RANGE

control

VOLT'S/2

Turn

the

oscilloscope

power

Allow

about

twenty

The

readout

display

will

read

out

voltage

corres-



minutes

warmup

ponding

per

each

degree

Centigrade

the

tem-

perature

reading

obtained

step

within

.1%

For

example,

the

reading

obtained

step

was

+25

the



Advance

the

oscilloscope

Readout

control

obtain

reading

obtained

this

step

should

be 10

+25

equals



usable

readout

display

(if

necessary, refer

the

oscillo-

250

.250



scope

instruction

manual)

Disconnect

the

test

leads

and

the

voltage/



Select

the

desired

full-scale

voltage

range

with

the

temperature

probe

This

completes

the

First

Time



MODE/RANGE

switch

( -

rhe

ranges

used with

Operation

Procedure



measurements

made

via

the

INPUT

connectors

are

indi-

cated

by the

orange

tint

the

front panel

GENERAL

OPERATING

INSTRUCTIONS

Resistance

Measurements

The

7D13

measures

resistance

in five full-scale

ranges

follows

200

;

000

2000

;

.00

kSt

;

200

k5~

;

and

000

2000

kSZ

operate

the

13 as an

ohmmeter,

proceed

follows

Install

the

7D13

any

available

plug-in

compart-

ment

of a Tektronix

7000-series

Oscilloscope

Turn

the

oscilloscope

power

Allow

twenty

minutes

warmup

Advance

the

oscilloscope

Readout

control

obtain

usable

readout

display

(if

necessary,

refer

the

oscillo-

scope

instruction

manual)

Set

the

MODE/RANGE

control

the

desired

RESISTANCE

range

Connect

the

INPUT

connectors

the

resistance

measured

Voltage

Measurements

Install

the

7D13

any

available

plug-in

compart-

ment

aTektronix

7000-series

Oscilloscope

Connect

the

voltage

to be

measured

the

INPU

i°

connectors

The

readout

will

display

"+"

preceding

the

reading

the

HIGH

input

terminal

positive

with

respect

the

COM

terminal,

and

"~--"

the

HIGH

terminal

negative

with

respect

the

COM

terminal

measure

voltages

with

the probe, use the

following

procedure

Install

the

7D13

any

available

plug-in

compart-

ment

of a Tektronix

7000-series

Oscilloscope

Turn

the

oscilloscope

power

Allow about

twenty

minutes

warmup

Advance

the

oscilloscope

Readout

control

obtain

usable

readout

display

(refer

the

oscilloscope

instruction

manual

necessary)

Select

the

desired

full-scale

voltage

range

setting

the

MODE/RANGE

control

one

the

four

VOLTS

ranges

with the

gray

front-panel

background

The

7D13

can

measure

voltages

four

full-scale

ranges

follows

.000

±2

.000

;

±0

.00



Connect

compatible

probe

the

front-panel

±20

.00

;

±00

±200

;

and

±000

±1000



PROBE

connector

2-4

CAUTION

When

connecting

the

probe

the

PROBE

connector,

the

two

connectors

must be

correctly

aligned

Damage

the

terminals

can

result

from

forcing

the

connector

and

jack

together

Refer

the

probe

in-

struction

manual

Apply

the

voltage

to be

measured

between

the

probe

tip

and

the

common

strap

the

probe

not

use the

COM

INPUT

connector

when

making

measurement

with

the

probe

The

readout

will

display

"+"

preceding

the

voltage

reading

the

probe

tip

positive

with

respect

the

com-

mon

strap,

and

"--"

the probe

tip

negative

with

respect

the

common

strap

Voltage

measurements

with

the

probe

are

essentially

the

same

with

test

lead's

The

probe

straight-through

device

;

provides

attenuation

extend

the

mea-

surement

range

The

probe

shielded to

minimize

pickup

electrostatic

interference

(For

information,

see

the

instruction

manual

for the

probe

Current

Measurements

The

7D13

will

measure

current

four

ranges

follows

.000

;

.00

;

200

;

and

000

2000

"To

measure

current

with the

7D13,

use the

following

procedu

Install

the

7D13

any

available

plug-in

compart-

ment

a Tektronix

7000-series

oscilloscope

Turn

the

oscilloscope

power

Allowabout

twenty

minutes

warmup

Advance

the

oscilloscope

Readout

control

to obtain

usable

readout

display

(if

necessary,

refer

the

oscillo-

scope

instruction

manual)

Set

the

MODE/RANGE

switch to

the

desired

full-

scale

CURRENT

range

displayed

dependent

upon

the

relative

voltage

the

two

INPUT

connectors

the

HIGH

input

connector

positive

with

respect

the

COM

input

connector,

"+"

will

displayed

and

vice

versa

For

current

measurements,

cur-

rent

(electron

flow)

into

the

COM

connector

and

out

the

HIGH

connector

will

result

"+"

being

displayed

Temperature

Measurements

Operating

Instructions---7D13

The

7D13,

conjunction

with

temperature

sensing

probe

such

the P6058, can

measure

temperatures

from

-55

+150

one

range

measure

temperature,

use the following

procedure

Install

the

7D13

any

available

plug-in

compart-

ment

"Tektronix

7000-series

oscilloscope

Turn

the

oscilloscope

power

Allow

twenty

minutes

warmup

Advance

the

oscilloscope

Readout

control

obtain

usable

readout

display

(if

necessary,

refer

the

oscillo-

scope

instruction

manual)

Connect

the temperature-sensing

probe

the

front-

panel

PROBE

connector

When

connecting

the

temperature

probe

the

PROBE

connector,

the

two

connectors

must

cor-

rectly

aligned

Damage

the

terminals

can

result

from

forcing

the

connector

and

jack

together

Refer

the

probe

instruction

manual

Set the

MODE/RANGE

switch

"TEMPERATURE

Apply

the

probe

sensor

tip

the

device

being

mea-

sured

For

optimum

temperature

transfer,

the

surface

the

device

being

measured

should

coated

with

silicon

grease

and

the

probe

tip

should

applied

squarely

the

rface

Allow

sufficient

amount

time

for the

probe

tip

"settle"

before

taking

reading

The

time

required

depends

upon

several

factors

Generally,

when

the

tip

first

applied

the

device

under

test,

the

readings

will

change

rapidly

the

probe

tip

temperature approaches

the

temperature

the

device

under

test,

the

reading

will

stabilize

"settle"

Connect

the

current

be measured

the

IN-

PUT

connectors



Using a

Transistor

as a

Temperature-Sensing

Device

Certain

NPN

transistors

such

2N2484

can

used

The

polarity

the

current

sensed

by the

7D13

cir-



separate

sensor

place

the

probe

tip

with

little

cuitry

and

automatically

displayed

The

polarity

symbol



selection

the

device

2-5

Operating

Instructions-7D13

Typical

accuracy,

without

recalibration

the

13,

can

expected

to be

within

for

measurements

from

--55

+125

However,

device

parameters

could

vary,

causing

inaccuracies

the

temperature

readout

great

±5

the

measurement

made

requires

accuracy

greater

than

the

calibration

should

checked

Check

the

calibration

placing

the

sensing

device

environment

having

known

ambient

temperature,

and

comparing

the readout

versus

known

temperature

Any

difference

noted

the

test

temperature

can be

used

correction

factor

throughout the

measurement

range

--55

+125

Connector

(rear

view)

Tektronix

Part

Number

131-077-00

The

temperature-sensing

transistor

connected to the

7D13

through the

front-panel

PROBE

connector

using

two-

conductor

shielded

cable

and a connector

plug

(Tektronix

Part

Number

131-0778-00)

wiring

diagram

shown



Fig

2-2

Schematic

diagram

temperature-sensing

transistor

con-

Fig

2-2



netted

probe

connector

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