Philips PM2517X, PM2517E Service Manual

GI

sd

Automatic Digital

PM
PM

Service Manual

9499 475
790507

2517E ,,o,onu
2517X o,0,.0.,

01311

Multimeter

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PHITIPS

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equipment

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for

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79 06 06

AIreodY issued:

Re :

-

Documentotion

D ocume

lnstruction

nto tion

su

mqnuol

version of OQ

New

rvey

lnstrument

9499

PM 2517E/X

versions

475 01011

0063

E DMO]

DMol 600

X

E

600

DM02
X DM0l 3051

and

-

D M02 4926

-

DMO] 3051

4926 - onwords

science

industry

-

onwords

SME

83

475

lnstruction

Service

-

New version of OQ

In

Using
(E

of
some.
To
using

noie

the

new

ihe
DMOI 600
the

Q-function.
Concern Service

qvoid

them in the eorlier

mqnuql 9499

SME 83

0063

version of

new

OQ

-

problems

the OQ 0063

0063

D MO2

4926 ond

The ordering

with

in ihe eorlier

willdeliver only

the

01311

X DM 0l 600

number of

Q-function,

PM 2517.

'17

pin

versions of

lhe new

pin

is internolly connected.

the PM 2512

-

DM0l 3051)

the OQ 0063,

version of

the

l7 of

OQ

results

209 85886

5322

the OQ 0063.

should be

0063

in molfunctionning

remoins

cut-off

the

when

I

I

I

9499

478

09511

J
J

il

t
t

oQ 0063

old

DM0l 600 - DM02

-

DM01 600

DMOI

4926

3051

New OQ

M02 4926 - onwords

D
DM0l

3051

0063

-

onwords

T----1

--

=-

I

t

Ij

ll

oo

(

oLD

0063

BOARD

PC.

0063

oo

(

)

NEw P.C. BOARD

sr

)

I

2717

PHITIPS

equipment

800218

le

for

$EHUIGE****m

PM2s17

Alreody

Re

L

Storting

-

.

-

issued r SME

:
: 2. Botiery
: 3.
:

problems

descript ion

Error

the PM251/ is

lf

it moy hoppen thot the

-

-

In both
ON
correctly ogcr

Couse

Storting
The

coses fhe PM251Z does not reoct

ogoin or to the functions

problems

problem

83

1.

Storiing

Predeflecfion

4. lncorrect reoding

OQ0063

Disploy
Disploy

in.

only occurs

problems

cover

in the

.

switched-on

OQ0063
indicotes overlood
indicotes o too low reoding

of the OQ0063.

with new LC.

E/X

OQ00l,3

=':=

mA
the mA ronges

in

the function

in

does not storf.

V=, Vn , mA==or mArw

ronge

Q,

on ronge commonds.

's

with

or

d

This con result in

weeknumberT9l9 ond higher

and industry

oC

*ith

the instrument functions

science

op.n input or

the

following

After

switching

SMEB4

Rx

8000,

errors:

OFF

(refer

ond

to

sME 83).

-

Remedy

PM25I7E
PM2stTX

DMOI 600 - DM02 4926
DM01 600 - DM0l

3051

when

Only

modificotion must

the OQ0063 is reploced

-

Remove copocitor

-

Short circuit resistor R4l3

-

Connect to
copocitor

10

be built- in:

pin lZ

l5

of

(pin

lZ

15

17 18

by

C407

ond pin l5

10V in

PF,

of the

o new type

(22nF

\

(3k3)

($

porollel

OQ0063 should be cut

(weeknumber

of the

)

R4l8

c407- 1+

OQ0063

with o resistor of

=

68 kO,

F

l

'-79.19)

on electrolytic

off, refer to SME83).

CRl6 5322

10V

,

the following

kQ, CR16.

68

l l r

s322 124

9499

30291
t4036

478 10811

l

2517E

PM
PM25\7X

-

DM 02
DM 0r 3051 - DM 04 86il

4926

DM 04

10491

t"
t;

lf the OQ0063 hos q weeknumber of7919or higher the following

c404

F---n

R

413

fr

T

Connect to

15P F in porollel with o

Proceed

-

Remove

-

Remove

-

Remove resistor R413

-

Short circuii the spots

-

Mounl copocitor C404 on the

-

Mount the new

c401

pin l/

os

follows:

copocitor C407
copociior C404

c404

F-l

OLD

of the OQ0063

resistor of 68

copocitor

15uF

wrres in

clrcurr

short

NNODIFIED

cne

-

(3k3)

where R4l3 hqs been removed

Mount fhe 68 kQ resistor befween

OO0063

ond

supply

kQ ond

(22nF

)

(1nF)

p.c.

(15 p

C407

R4lB R= 68
C407

hole

ot the conductor side of the

zero $ on electrolytic copocitor

short

ogoin.

boord

f)on the

C=l5p

modificotion must be built in,

circuif

p.c.

ka, CRl6 5322

F, 10V

resistor R413.

(see

figure)

boord

5322

pin

ogoin

(see

lll

30291

124 14036

15 ond lZ

p.c.

boord.

figure) '

of

of the

I

t,.,

[,

r'

I

:r

I

a

Ir

5;

r;

[1

CURRENT SOURCE

t;

r;
r,

-l:,.

I

:r

PM 2517E
PM

2517X DM04 8611

DM04

The

modificqtion

10491

hos

-

onwqrds

-

onwords

olreody been built

in from the foctory

on.

tJ

I
.l

1
I

l

J

I
J

l

erratum lor

"oncerns:l. Starting

polarity

The
circuitdiagram

SME

of

the

must be

84 code

new

nr 9499 478

problems

000063

capacitor C407

changed to show; Pin

10811.

is drawn incorrectly.The

17 of the 000063

pin

15 of the 000063

drawing

(4401) = _
(A4ot) =

of the l.C, and the

(+)

+

2. Botte rycove r.

3.

Sofety requirements mode it necessory thot the
meosured on should be
Therefore the

bottery spring ond the bottery cover
The ordering number
bottery cover is reploced olso the

ploced

the

of

lower.

bottery cover reomoins

bottery spring should be

bottery spring

Description Orde ri ng number Qtv.
Bottery

Bottery

Predeflection

-

Error descript ion

ln

-

Remedy

Cut trock which is situoted

boord

Interconnect pin24
From

on the modificotion hos olreody

cover 5322 443
spring

low

in the mA:=: ronge.

the mA

-- ronge the PM 251 Z hqs o

(see

figure).

number DM 06 15321

seriql

64026

5322 492 64746

the

under

the

of

OQ0059

PM2517E ond

been built in

predeflection

OQ0064

(D101)

ond

(lorger

the

some. In ol

(A102)

pin

7

DM 06
the

by

where the

hole) hove

d instruments where the

reploced.

of

2 digits of

ot the

of

conducior side of

the

OQ0060

14986

foctory.

boftery

voltoge is

been chonged.

shortcircuited

(Al0l) (see

PM2517X

input.

the

figure)

p.c.

WIRE

4.

---

Incorrect reoding

-

Error desc ription

High

current

mA ronge.

-

Remedy

A new

in the

resistor

mA ronges.

peoks

This will give

type R603,

con influence permonently

o permonent

ordering

incorrect reoding.

number

5322

CUT

TRACK

the

volue of resistor R603

ll6 44011.

in the

PHITIPS

equipment
for

science

$EmUilGE*d**ffi

800408

Already

Re:

issued: Sl\4 E

st\4E
New

-

Documentation

lnstruction

83
84
LX display

survey

manual

9499 475 010'1

PM

2517X

E

DM01

600 - Ot\402 4926

x Dt\40'l

E DI\402

1

-

DM01

600

4926 ONWAB DS

x DM01

X DI\407

and industry

SME 85

305'|

3051 - Dr\407 17361

17361 ONWARDS

lo

Instruction

Service note

New

l.

LX displav

From

serial number DM

and lrom

LX display

The new

In

addition

pin

Nl

manual

serial number

{height)

rubber

interconnection

to the new

3.

9499 475

SME 83
SME

84

SME

85

07 17361

DM 07

differ from

LX display

0'1311

onwards

19138 with

the

excisting display.

strip has

a wire

been

is soldered between

pM2571X

the

a new rubber interconnection

mounted, to ease the

is equipped

the soldering bulb

with a new

strip.

mounting.

LX disptay

The dimensions

on the LX display

(type
of the new

BBC)

and

9499 478

10911

OLD

PM2517X

LX display

1=

F

lexible interconnection

2=

Ru bber

3=

Tape

4=

5= Large

Display

6=

Fixing

7=

Positioning hook

8=

DM0r

(5322

roller

fixing clip

unit

2x

clip

SITUATION

-

Dl\,107 17361

600

130 94011

strip

obsolete)

sT 2541

PM2517X D

LX display

1=

Flexible rubber

2=

263 540141

15322

5= Large
6=
7= Fixing clip
8=

fixing clip

Display unit

Positioning

NEW

SITUATION

l\.407

(5322

130 94025)

interconnection

2x

hook

'19138

strip

onwards

In

new arrangement

the

page

1l2 of

How to

2-

The existing
when

For

replace

Ordering numbers,

3.
Obsolete until oresent

LX DTSPLAY

Plvl2517Instruction

the

proceed

LX display 532213O

display has to be

LX

the

refer to

rubber roller

the

lvlanual.

with old instruments

9401 1 is

replaced, the existing

page

112 of the

stocks are exhausted

(3)

and tape

(PM2517X

obsolete

PM25l7

AODITIONAL
BETWEEN SOLOERING

THE

ON
N1 PIN 3

(4)

are not required.

600

-

DMOT 1

DM0l

interconnection strip

instruction manual and

5322 130 9401 1

7361)

WIRE

LX OI5PLAY

To replace the

be

also

should

point

1 of this

zoos

sr

LX display.

replaced.

information

refer

sheet.

I

to

Replaced
LX
Rubber interconnection strip

by

DISPLAY

(Type

B BC)

5322 130 94025
5322 263 54014

PHI[IPS

.']
I

I

equipment

I

for

science

$EMUilGEnfi**ffi

801009

I

J

Already

Rc :

Documentation

issued:

1.

Starting

2. ON/STAND
Textplates

3.

4.

Corrections

Survey

SME83,

problems

of the

SME84,

000063

BY/OFF

Service manual

Sl\4885.

switch PM2517E

PM2517

E.

DM

0't

x

DMor

ElX

-

600

600 - Dt\401

Dt\402

4926

x

DM01

x DM07

DM06

DM02

4

3051

-

DM06 16386

3051 - DM07

-

17361

X Dl\407

16383

19671

DM07

onwards

and industry

SME87

17361

19671

onwards

Instruction
Instruction

Service note

Starting

The remedy
sufficient.

It

-

-

probl€ms

should be

Error

descriotion

lf

the PNr2517

it

may happen

-

-

In both
ON again
correctly agäin.

Cause
Starting

The

cases the Plvl2517 does

problems

problem

manual
manual

9499 475
9499 475

SME83

st\4E84

SME85

SME87

000063.

for

the

starting

replaced

is

switched-on

that

Display indicates

Display

indicates

or to the functions

only occu

problems

by the remedy

the 000063

of the

O00063

rs with

01Ol1

0131'l

as described

in

the function

does

overload

a too low

not react

V=,

new r.c.'s

of the

currentsource

not

start. This

reading

on

Vrv,

mA:=or

with

000063

in

this

Service note.

Sl,, I o,

range

weeknumber

oC

can result in

commands. After

mA.\.,/the

with

7919

open input

instrument

as described

the followinq

switching OFF

higher

and

in

o, Rx )

functions

(refer

Service note

800 f,2

errors:

and

to sMEg3).

9499 478 11111

SlVEg4.

,

is not

-

Remedy
PM2517E
PM2517X DM01 600-

DM01

600- DMO4

DM04

10491

8611

when

Onlv

built-in:

be

-

Short circuit

-

Place a

between

(C402

OQOO63

the

resistor

resistor of 220

pin

1 of the OOOO59

Refer to

R721)

and

replaced by a

is

R413

ksr. cR16

{DS1)

Fig.

new type

532211130302

pin

and

1

(w€eknumber

of the 000063

6

7919)

>

(clock)

following modifications

the

must

PM25l7E
PM2517X Dt\401

Fig. l.
PM2517E DM04

PM2517X DM04

In these instruments, the
For

the correct

-

Remove resistor

-

Replace capacitor
place

­000063

PM2517E DM06
PM2517X

The modification

NOTE: There

D l\401

600

-

600

P.c,

board

Nl

conductor

10491 - DM06

8611

modification

R418

C407, 15uF 1OV

a resistor

the modifications are alreadv built-in,

of 220

(Clock)

DM07

lC4O2

16386 onwards

19671 onwards

has already been built-in

are several instruments

onwards

DM01 3051

side

16386

-

DM07 19671

modification as mentioned

proceed

(SME84)

kS)

,

and

as follows:

5322 11 I 30302

CR16

R721)

Referto

with a lower

5322124

by the

Plvl2s17X

in Service note SME84

14036

Fig. 1.

factory.

serial

by a

capacitor

b€tw€en

number than DMO6

pin

l\4O

D

l 3051

are already

of 22nF,4822122

1 of the OO0059

and

16386

onwards

built'in.

30103

(DS1)

DM07 19671

and

pin

Ceramic

the

of

6

which

in

plate

2.

ON/STAND BY/OFF

switch PM2517E

J.

an

The lockspring,
switching. The
The

new ordering

Lockspring

Ball

bearing

Textolates

To conform with
The ordering numbers
Topcover

Baftervcover E/X

Topcover

Corrections of the

Page

65 5.2. Adjusting

X

5322

topcover

numLlers

5322 492

4822 52O 4OO12

the international

5322 447
5322 443 64029
5322 447

Service manual

NO.2 ADJUSTING

Adj. resistor R'107

lMR25,

492

part

64675,

now

are:

power

of

the

consists of a

switch in the topcover has been

locking-spring,

64742

standards, the text on

for

the topcover and bafterycover with

94558

94537

table

1'Ä, E48

(ordering

series)

number

E LEMENT

9499 475 0131 1)

modified to ensure

two ball bearings

the topcover and the batterycover has been modified.

new

the

texts are:

and a

knob.

a smooth

Should be Adj. resistor
changed into:

'

Adjustment

NO.1'l

lMR25,

Potentiometer

1o/., E48

must be omitted

R107,

coarse.

series)

R 106, fine.

CONTENTS

Pt:A 2517E

Page

3

1.

1.1.
1 .2.

t.J.

2.

2.1 .

2.2.

J.

3.2.

3.3.

3.4.

4.

4.2.

4.3.

5.

5.2.

TECHN ICAL

Electrical specifications
General
Power

supply

ACCESSOR tES
Accessories supplied
Optional accessories

CIRCUIT DESCR

General

Principle of operation

Detailed circuit description
Specifications of !C's used in the

ACCES

General

Dismantling

Replacing

ECKING AND AOJUSTING

CH

General

Adjusting

DATA

data

with rechargeable

with

IPTION

PM 2517

the

parts

table

instrument

the

batteries

Pl\il

2517

5
5
7
8

I
I
I

16

to

20

41

60
60
60
60

64
64

65

.3.

2517

TROUBLE

Power

Ranging

A-ranges

A-

ranges

oC

range

if

range

Modif

X

SHOOTING

supply

LIST,

ications in rhe P[i]

6.

6.1.

6.2. Display

6.3. ADC

6.4. V-attenuator

6.5.

6.6. V- ranges

6.7. f,2 ranges

6.8.
6,9.

6.10.

6.11.

6.12. Stand-by

6.13. Data hold

7. PABTS
1 .1. lvlechanical
7 -2. Electrical
1

Prlr

2517E

61
69
10
12
75
76
78
81
82
83
84
84
84
85

86

86
88

92

105

IMPORTANT
ln correspondence concerning this

plate.

type

WICHTIG

8ei Schriftwechsel über
anzugeben. Diese be{inden sich auf

IMPORTANT

dieses Gerät wird

please

instrument,

gebeten,

dem Leistungsschild.

quote

genaue

die

the tVpe

number

Typenbezeichnung

and

serial

die

und

number

Gerätenummer

given

as

on the

rl

[,

[.'_

t
t
t

RECHANGE DES
Dans votre correspondance et

le num6ro de type et le num610

Note.

PIECES DETACHEES

dans vos r6clamations

de s6rie

The

Consequently, this instrument may

contained in this manual.

design

of

this

(R6parations)

se rapportant ä

quisont

instrument is sublect to continuous development and

marqu6s sur

incorporate

cet appareil, veuillez

plaquette

la

minor changes

de caract6ristiques.

in

detail

TOUJOURS

imprcvement.

from

information

the

indiquer

t

?

Bemerkung:

Remarques:

@ N.V.

Die Konstruktion und Schaltung dieses Geräts wird ständig weiteren twickelt und verbessert.
Deswegen kann dieses Gerdt von cien in dieser Anleitung stehenden Angaben abweichen.

Cet appareil est
certains dötails
d'emploi et

PHILIPS'

GLOEILAMPENFABRIEKEN

l'objet

mineuß

d'entretien.

de d6veloppemens et amöliorctions continuels.

peuvent

difförer des informations

_

EINDHOVEN

_

donn6es dans

THE

En

consöquence.

pr6sente

la

NETHERLANDS

notice

_

[,

q

+

r

1979

I

l
l
l
l

j

l
l
l

I

,o

l

l

PHITIPS

5T

233(

l

j

l

l
jo

l

)

.l

Service

Automatic

Manual

Digital

PM2517E

9441 625 11O.1

From

serial

number

Dl\,4 02

4926

onwards

Multimeter

l

I

475

9499

01311

4

LIST OF

FIGURES

Page

L

r

t-|

r

-

L

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

to.

17.

18.

19.

20.

21.

22.

23.

24.

25.

26.

27.

28..

29.

30.

32.

33.

34.

35.

36.

37.

38.

39.

40.

42.

43.

45.

46.

47.

48.

49.

50.

51.

52.

53.

54.

Power

supply

Temperature

Data hold

probe

H F

Accessory

probe

R.F.

probe

EHT
Current transformer
Shunt
Block

Basic built up of Pl\tl 2517E
D.c. voltage measurements
A.c. voltage measurements
D.c. current measurements
A.c.

current measurements

Resistance measurements
Compensation
Protection
Temperature measurements
ADC

Data signals examples

BIock diagram of digital section

Flow

chart and

Pulse

diaqram of UP/DOWN/AUT ranging
Timing
Power
Pinning HEF

lock diagram HEF

B
LED indication

Pinning HEF

B lock diagram
Pinning
Pinning
B lock diagram OO 0059
Pinning
Pinning
Pinning
Pinning
D ismantling
Inside
Inside view
Mounting the
10A switch
Adjusting
Faultf

Inside view of

Bottom cover with item numbers

Input block with item numbers

P.c.

board with item numbers

P.c. boards component
P.c. boards

Function
Survey of used components in the

Circuit diagram

probe

Pl\.4

9248

probe

PM 9263

PM

921 0

PN4

set

9212
PlVl 9213
PM

9246

Plvl

9245

PlVl

9244

d iagram PM

resistance ranges

of display unil

supply signals

and block diagram of OO
OO

and block
and block diagram OO
and block diagram OO
and block diagram OO 0064

view

top

elements

inding block

conductor

switch lay'out

2517E

ADC

of

tim ing

451 1B

45558

HEF

0059

the

on

of top cover

power

top

current

45118

45558

diagram OO 0060

Plvl

2517

p.c.

board

switch knob

diagram

cover with item numbers

PIM

side

Pl\4 2517E

side

PM

2517E

0061
0063

2517E

0055

PNI 2517

10
14
14
14
14
13
14
14
14
18

20

20

22
25
25

27

27

27
28

31

29
32

33
39
40
41
41

43
43
44
4B
48

52

54

56

5B
62
62
62

61
62
64
66

87

87

81

B7

95

96

91

98

101

t".1
r'

Ll

r

I
Ll

t_

r

ö

t
t_

i:

r'

I

-l

t-

t

?

t
t­t
t:

I

l

-l

l

I

J

-.l

I

l
l
l
l
I

I

)

l

I
J
I
I
I

.,

1.1. ELECTRICAL

1.1.1, D.C.

1.1.2

rEcHNrcAL

All values

by

Range

Resolution
Accuracy
Temperature

Input impedance

Protected

A.C.
Range

.

R esolution

AccuracV

Frequency

Temperature

lnput impedance

mentioned

the manucfacturer.

voltage measurements

up to

voltage measurements

influence

coefficient

coeff icient

DArA

in this description

SPECIFICATIONS

4 sub-ranges:

Additional

4O
'10

300

Range

999.9 mV

9.999

are nominal;

100

irv

4 sub ranges:

100

!V

t

0.29,"
ppm/oC

300

Range

999.9 mV

9.999 V

99.99 V

999.9 V
1000V...

1400 V

100pV...

100sV

i

0.57o of reading

Valid

H2...

1 kHz..

kHz..

ppm/oC

'1000

. . .

999.9 mV:9.999

reading

of

of readinq

or 1000 V^-

peak

1000

999.9 mV;9.999

) 1% of range

error

Error

l kHz
. 10 kHz
.20 kHz

of reading

V

those

V

10

05%

Input

10 t\ro

I tvl

V

10.1%

t

7o

Input

2Mf,2

given

with

full

of

impedance

1

1%

01 I 19l"

rms

full

of

full

of

scale

t1

+q

impedance

x17.

tolerances

V;99.99 V;999.9

scale

V;99.99 V;999.9

scale

are binding and

(50H2)

guaranteed

V

V

,]

l

I
I

l
l

AC-DC
Crest factor
Protected

conversion

up

to

99.99

V

999.9

V

True

R lvls

2 at

end

of range

600 V-

1400 V peak

rms

+

400

t\,

1

V:-:.:

802

J

1%

6

1.1.3.

1 .1.4.

D.C.

cu.rrent

Range

Resolution

Accuracy
Temperature

Voltage

Protected

A.C.

Range

drop

up to

current

measurements

measurements

coeff

icient

over

shunt

-

10/lA

l mA-

2

t

0.570 of reading

500

Range

99.99

9.999

Range

99.99 mA

9.999 A

10

I mA'

2 fixed ranges

fixed

ppm/oC

A

.

100 mA

!A

100

mA

10A

ranges

of

104

with

separate inputs;

10.'l%

reading

Voltage

(

200

(

150 mV

Protection
Fuse

315 mA

protectron

No

with

separate

of full

scale

drop

mV

quick

inputs;99.99

99.99

9.999 A

9.999 A

mA

250 V rms

mA

Resolution

Accuracy
Temperature

Voltage

Protected

1.1.5. Rssistanc€measurements
Range

Resolution

Accuracy

drop

up to

coef f icient

over

shunt

Range

99.99 mA

9.999

A

i

0.8%

of reading

ppm/oC

500

Range

99.99 mA

9.999

A

Range

99.99

mA

9.999

A

0.1 Q....10tvo

5

sub-ranges:

10.19,"

of reading

999.9

999.9

0.1 r,

Range t

999.9

9.999 kQ

99.99

999.9 kO

9.999 tvlQ

s2

kO

R

eso lu

tio n

10

llA

of

full scale

Voltage

(
<

Protection
Fuse
No

Q ; 9.999
kO;9.999

drop

200

mV

150

mV

mA quick

315

protection

7o of reading

r

0.5

t

1

kQ

M O

at

50 Hz

;99.99

1

% of fult

250 V rms

kQ

r

0.1

10.1

input

scate

signal

'l

I

J

Temperature

I

Protected

up

coef

to

f icient

Range Temp. coefficient

999.9 5l

9.999 kO

99.99

999.9 kf,,

kQ

9.999 tvl Q

250 V

rms

300

500

ppm/oC

ppm/oC

of reading

reading

of

I

J

I

'
I

I

I

r.r.o. Diode

_..
unvtng

Ranse

P rotected

1.1-7.

'.r.

Temperature

Probe

to

l\4easuring

Accuracy

(Probe

GENERAL

D isplay
Maximum
Overrange indication
Polarity
Unit indication

Function
Inputs

Rang€

selection

Series mode

(SM

RR) dc ranges

Common

(C|\4RR)

Analog
Conversion
Conversion

Protection

measurements

current

up to

measurements

be used

range

combined with

PM

DArA

reading

indication

indication

rejection ratio

mode rejection

to digital

conversion
time
rate

2517)

ratio

+999.9
250 V rms

PM

9248

-60oC...

Range

-

60oC...

+

1000c...+2oooc

7-segment

9999

(only

0
+

or - automatically

mV, O
V, kO

v

-

Combined
Common
Special

Floating

Automatic
lvlanual

Ranqe

99.99

9.999

99.99

999.9 V
dc

ranges

ac ranges

Integrating

200

msec.

5

conv/sec.

Max.

voltage

For

specific protections

specifications

+20OoC

+100

11 mm

o of

102 digit is tightedi

N4C,

by LED'5

,

oC,

(m)A

,

v-, ko,

,

V, mA,

socket

10A input

inputs

: for function

:

for all ranges

SI\,1R

mV

60 dB

V

V

40dB

l0O dB

g0

dB

between

oLf

j

oC

+1.

LED display, with

by function

oc,

,
S)

f,,

socket

R

0 and

selector

(m)A_

socket

V

and f,,

48HZ

48Hz

b0/60 Hz

mains earth

refer

to the function

readinq 1oC

12

-3

auromatic

(m)A-by

,

-

l kF,z

-

lkHz

(+

4O0V:::

)

decimal

function

2

point

setector

indicat

jon.

Response

Recovery
Data

Climatic

Power

Operation

BatterY
Mechanical

time

hold

conditions

supPlY

time

life-time

data

ranging

out

W ith

Function

,

A:-:

V ;:-:

aT

ranglng

With

ion

unct

F

f,)

sec.

3

max.

probe input

Via

Reference
Rate
SpecifieJ

Limit
ancl

Relative
cluding

4x 1.5

4x

(special
GENEITAL

FURUKAWA,
External

OFF
ifnt!o

ON,
30

Dimensions

Cabinet

Weight

lemperature

range

range

range

transporr

humidity

condensation)

V batteries,

Nicd

V

1 .5

requirements).

9

av,

hours

sec.

1
1 sec.
1sec.

sec.

3

sec.

5

sec.

123

-16

-40

types:

tYpes:

e.g

GCT

IC,

suPPlY

40

for

display

(without

time

time

oC

og
oc

O

Philips

batteries;

1 .5

PIM

sec

165

15

I

50

ABS

Response

"C

max.

,

max.

max.

Response

max.

max.
max.6

use

of

srorage

of

(ex- 20y"

e.g.

rechargeable

ELECTR

104

S

V

Power

display

continuous

(continuous disPlaV)

Length

Width

Height
l\4aterial

=0.7

kg

! 2oC
+

55

'

'45

oC

*

70

80"/"

R

refer
DEAc'
SB

9218

DISPLAY

if

mm

mm
mm

batteries)

oC
oc
oC

'14

RS 15

TR

tc

switch

1'3

is activated

1.3.

POWER
The

external

instrument

Note:

For

-

-

­Note:

SUPPLY

pl\,4

2517

power supplY

when

Tn!*noi

again,

changing

Remove

Remove
Pull the

Take

again

WITH

delivered

be

to

has

instrument

the

un*"'

the

wiring

the

batterY

the

two

the

cover

rear

care

take

RECHARGEABLE

factory

the

from

PN4 9218'

the

using

modified

instrument

cover

special

from

that

care

The
ßwired

power supply

sllould

ploceed as

nuts situated

Instrumenr'

the

wimg

the

wiring

the

that

wired

is

For

charging

rechargeable

for

will
wired

be

{ollows:

under

battery

the

to

fitted

is

BATTERIES

with dry-c€ll

use

for

rechargeable

hours'

18

is

time

damage

the

original

its

to

battery

the

compartment

properly

batteries

battery

dry'cell

state'

cover

batteries
power supply

power supply

not

When

break'

batteries'

does

power

drY+ell

,

dry'cell

When

supplv

wiring

the

batteries

batteries

mounting

for

or

inside

I

a

should

are

rear

the

V

the

not

used

cover

PM 2517 E

-

Instruments with serial number
Interconnect

Note:

-

Note: The voltage regulator

I

2.

ACCESSORTES

Some instruments with
regulator diode
numbeß

Instruments with
Interconnect

Short-circuit the voltage regulator

points

2

and 3 of the

as shown

greater

points

than DMg00.

serial numbers

2 and 3 of the

Dl\4600 upto Dl\.4900.

power plug.

serial numbers DM60O

in figurc 1. For

greater

diode is

than DM900.

power plug.

diode.

used for decreasing

version

upto DMgOj

these instuments

/0'1.

the external g V

are already equipped with a voltage

proceed

as for instruments with serial

7 V for

to

the instrument.

to

2.1.

2.2.

2.2.1.

Accessories

-

l/easuring

Fuses

2

I

V

Directions

OPTTONAL ACCESSOR

Temperature probe
The

resistance

between

Range
Resolution

Accuracy

Perm

tip

315 mA

power

-60

(combined

Pt\l

issible

supplied

leads

supply

for

voltage

with

with

test

quick

PM

9218

use

tES

PM

9248

thermometer Pl\4

oC

and

2517)
at

+200

with

probe

the Instrument

pins

(Fig.2)

9248 is

oC.

a contact

-60
0c

0.1

-

60

+

100

60v

oc

to

oC
oC

probe,

+2oo

+100

to

+200

to

suitable for measurement

oc

I

+

o/o

1

of reading

1% to

-3%

of

oC
oC

of surface temperatures

!2

reading

!2

0C
0C

2-2.2.

Data

The
data hold
data for
combination

probe

hold

PM

9263 is a DATA

facilities

display.

pM

on

Depending

with

the

(Fig.3)

9263

HOLD

the s'pole

on the

probe.

probe

which

probe

DIN

multimeter,

can be

used in combination with multimeters

input.

A

switch

voltage, resistance

ring

probe

on the

and current measurements

pushed

is

which

forward

can

have a

hold

to

be made

the

in

10

DRY CELL

TO AATTERY

COMPARTMENT

BATTERIES

OR 9V EXTERNAL

9218

POWER

SUPPLY

PM

PM 2517E/01

numbers DM600 - Dl\4900

Serial

PM 2511E/O1

Serial numbersDM900 and f ollowing

PROBE

RECHARGEABLE

BATTERIES

INTERCONNECTION

WITH EXTERNAL

PM 2511E/O1
Serial numbers

PM

2517E/01

Serial

POWER SUPPLY PM 9218

-

Dlvl900

numbers

Dl\4900 and following

DlV1600

l. Power supply

Fig.

I.

[,

Technical

Data hold
lvlaximum

l\4aximum input current

Input capacity
Resistance

Temperature

Rated range of use

range of storage

Limit

and transport

Relative hum

Accessottes

Delivered
Accessory box containing

-

Zeroing

-

2 lVlarking rings

-

Probe holder

-

Spring

-

Wrap

-

'

Insulating cap

-

Dual-in-line cap

-

10 Soldering

-

2 Spare

-

lnstruction manual

Optional
Accessories used

data

voltages

input

VQ and 0leads

range

idity

with

lead

loaded test clip

pin

accessories

PM 9263

the

(red,

connector

points

test

probe

tips

with oscilloscope

By means of slide
Probe tip

Common
200 mA
300

(Fig.2)

white, blue)

probes

switch on the

(VO)

to common

(0)

fvlains earth

to

pF

130 mQ

o6.

_16

-250C...+700C

107" . . .80%

can be

oC

+5b

..

(excl.

combined with this

probe.

(0)

condensation)

probe.

500
350
VHz

42V

Vd.c.
Va.c.

product

(107

L.

t,
t,

t
t
t

t
t
t

t

t

t

2.2.3. HF

Frequency range
Straight line
Maximum deviation
Voltages ranges

lvlax. voltage a.c.
Max. voltage d.c.

Input

T-piece

tmpeoance

Standing

Probe
suitable
For measurements beyond this
resistance which are included

probe

capacitance

tVpe

PM

type

(included

wave ratio

PM921O, in combination

for measurements up to a

9210

within 5%

in Pl\4 9212)

(Fig.4)

Accessory

kHz to 1 GHz

100
'100

kHz to 6

dB

3

150 mV to

30v

v

200

2pF

with the

frequency oi

frequency it is advisable

in

PNI 92'12

the

set for the

PM 9210

MHz

V

15

probe

'100

probe

probe

type

PM 9210

100
100

3.5
'15

200
500

2pF

50s2

1.25 at

with 100: 1 attenuator
accessories
l\4H2.

to use the 50

accessories set.

(adiustable

9212

+

PM 9212

'l

to
to 6

200

(Fig.5)

GHz
lvlHz

V

PM

kHz
kHz

dB

V

to

v
v

l\4Hz

700

earthing

O T-piece and

l.l5

and

pin

and

50 terminating

the

1 GHz

at

dage adaptorl,

t­ri

rs

I

13

2.2-4. RF

+3

da

+2

+1

o

-1

-2

da

-3

10 kXr

2.2.5.

probe

TYFICAL

FREOUENCY-RESPONSE CURVE

kHr

1OO

probe

EHT

EHT

The

measuring
Maximum voltage
Attenuation

impedance

Input

Atcuracy

Relative hLrm idity

PM

type

probe

instrumenrs

(Fig.6)

9213

lMXr IOMHr l0OMHr

PM

Plvl

9246

9246

Fig. 7)

{

is

su'table

having an input

+3

da

+2
+1
o

-'l

-2

da

-3

for measuring

impedance of 100

kv

30

1000x

tvro 1 57o

600

20vo to 80yo

1O mV - 15

10 kH! - 25O MH.

d.c. voltages

Vrmr

up to 30

lVlQ, l0 MQ or

a447

pF

68O

V­v= mer 35O

kv. The

1.2 l\4Q

09e 13001

v|"n!

tn.r 30

V

PM

9246

(selectable

can be

on the

used

probe).

for

Note: Check that earth

2.2.6.

Current trans{ormer type

With this

Transfer
Transfer erro r

Frequency range
Max.

loss 200 mV
lvlax.

Betore
Avoid contamination

2.2.7. Shunt
With
Current range

Output voltage
Accuracy

D issipation
Dimensions

correctly.

(100

'l

kHz

A = 100

transformer it is

factor

permissible

secundary

connections are made

PM 9245

possible

(Fig.8}

measure alternating

to

1000x

45 Hz to

voltage

voltage with respect to earth 400 V a.c.

measuring, connect the current transformer to

parts.

core

to measure direct-

'10

A and 31.6

'100

mV and 31.6

'l00mV

and alternating

:

(Fig.9)

type

this shunt it is

the

of

possible

31.6mV :
max.3.16 W

Height

width

Depth

55 mm

140 mm

65

currents

mA)

the instrument.

A

mV

11%
t2%

mm

over 10 A up to

currents

(max.

A

100

1 kHz) up to

3'1.6

A.

Fig. 2.

/l

-b

-{/

//

14

lr

o

Ftg. 4.'

Fis.7.

Nv

\q

''

)r'.

"

o

l-tg.

Ö.

16

t

[,

I

3.

3.1.

CIRCUIT

GEN
The

circuit

-

Analog

-

Analog

-

Digital

Each
varlous
circuit diagram.

The circuitry of the

integrated
The discrete components are used:

-

To convert the input signals supplied to the

LSI circuits.

-

As

As LED display

-

HEF

-

HEF

DESCRIPTION

ERAL

PM

of the

section

to digital

section

section

is described

stages

are inserted

circuits used

signal conditioning between the LSI circuits.

4511, BCD to 7 segm^nt latch/decoder/driver
4555, Dual 1 of 4 decoder demultiplexer.

2517

convertor

PM

control

can be subdivideci

separately with

in the

2517 consists of special made

for

display control.

lC's

are

text

used:

wherever

into

three main sections:

reference

to the overall

necessary

input

as

an aid

integrated

terminals

into

circuit diagram.

for

better

understanding of the overall

(LSl),

circuits

suitable

discrete components and

signals

Basic circuit diagrams

(attenuation)

for the

q

t
t
t

of the

t_
t

?

t

t

The

LSI circuits used

OQ 0055. character decoder driver for LED or LC display

bO 0059,

OO

0060, switching

OO 0061.
OO 0063,
OO 0064, voltage to current convertor for ADC

the integrated

From

3.2.

3-2.1. General

PRINCIPLE

The Pl\tl
Analog section

-

Input circu its

-

Dc

attenuator

-

Ac

attenuator

-

Ac/dc

-

Shunt

-

Current source

-

Temperature bridge

in

aigital

control

part

d.c.

a.c. to
programmable

with OO

OF OPERATION

2517 consists of:

convertor

0060).

circuits the data sheets are

(OO

0063)

{OO

PM

the

convertor

2517 are:

for ADC
for ADC with Delta lvlodulation

current source for resistance measurements

0061)

and autoranging circuit

(calculated

(Fis.

10)

ADC

Switch

v - | convertor

Rl\4S)

ing

principle

with

given

at the end of this chapter.

part

{OO

(oo

lModulation

Delta

0060)

0064)

(used

in combination

principle

Digital

section

-

Display

-

ADC control

-

Display d rive(OO 0055)

-

D isplay

(used

(OO

control

t

with OO 0064)

t

in combination

t

lr

0059)

3-2.2-

3.2.2. |. Direct voltage measurements

Analog

The unknown d-c. voltage
voltage is attenuated x10 or x1000, From

ADC which has a

section

is supplied to the d.c. attenuator. Dependent on the

sensitivitv of 0.1 V or 1 V.

range selected

the attenuator the attenuated voltage

input L

the

is directly supplied

to the

J

f

-J
I

J

t-

L

,

I

17

_t

I

-l
I

I

l

-t

I

l

ia

-t

J

I

J

-t

I

l

3. 2.2. 2. Al

3,2.2.3. Direct

3.2.2.4. R

J-2.2,5,

3,2.3, Analog to digital convedor

'

ternat in g vol

The

unknown input
voltage is
sensitivity
end of range)

and alternating

The

unknown
socket

or 9.999

case

of A-

ac/dc convertor

es

nce m easu rements

ista

At resistance measurements a
the inout terminals of the

The voltage over R x

I empentufe measurements

At temperature measurements the

is measured. The resistance thermometer

value at 0

The conversion of
The

ADC system is built
cycle of the data signal is

system

0.1 V and 1 V dependent to the

is

tage m ea

attenuated

of

0.1 or 1 dependent
is

supplied to

current

A via the

measurments

and then

oC.

The voltage from the bridge

equipped with an automatic zero

also

su rement|

voltage is

x10

current

is supplied

is

supplied

the

analog

to the ADC.

into

supplied

or x1000. The

the ADC,

measurement

'10

A socket)

supplied

constant current

PM 2511 .fhe constant current

signal into a digrtal

two

proportional

to the a.c. attenuator.

attenuated

to

the range

to the

directly to the ADC

to the ADC via the

voltage drop over the

LSI circuits.

range selected.

selected. The

shunts. Dependent on the

the

corresponding

flows

is switched in a

is measured by the ADC.

signal is made according the

The

height of the änalog input

to the

point

signal is

through

dc

attenuator.

analog

correction. The

Dependent on

supplied to the RIVIS

output voltage

range

shunt is selected. The
and in

the unknown

is dependent

resistance thermometer caused

resistance bridge and

signal is converted into a

case

A-

the range

of the Rl\4S

selected

measurements

resistance which

on the range selected.

is

Delta

signal of the

ADC

system

selected

convertor which has

convertor

(99.00

voltage

compensated

l\/odulation

data signal.

ADC

has an

the Inout

a

(1

V at

mA via VO

over the shunt is in

first suoplied

is

by a constant

system.

input sensitivity of

mA

to the

connected

current

for

resistance

the

principle.

The duty

ADC

The

to

l

.]l

I

lo

J
l

3.2.4- Digital
The digital section consists

components

(ADC

in
Result

The data signal from the ADC, the duty cycle of
counter in the OO 0059.

Range switching

Manual:
The output of the range counter switches the relevant ranges
Automatic:

(counter
Overrange

When the counter

then overrange

Polaritv

Dependent to the

section

of 2 LSI

for interconnecting the integrated circuits.

control, autoranging

The result

means

By

contents ( 00900) and the up

of switches

In the autoranging mode the output of

contents

is detected.

polarity

is>

of the data signal

circuits

control, data control).

of

(UP,

10.000

(OO

the counter is supplied to the display

DOWN) up or down, commands are

ranging command

^ase

in

0055 and OO 0059).2

ln

LSI circuits the complete

the

which

of manual ranging or in the

from

the

ADC

the input voltage of the

equals

in the attenuators and the

the result counter

(counter

the

contents

polarity

integrated circuits,

supplied to a

determines the down

> 10.000).

highest range during

is detected.

display and

control

ADC, is supplied to a

range counter.

ADC.

discrete

logic is built

ranging command

autoranqing

l
l

18

3.2.5.

Display

from the

The output

the control
function code

Both
indication is lighted.

Power
The

PM

In

case of

In

case

when
data is immediately

code

logic determine

from the

codes are

supply

of

the

supplied

2517 can

power
power

DlSpLAy switch

be
ON
STAND

result counter,

indication

the

functaon.*11"5

dec oderldriuer

to the

powered
the display

available

by

BY, which

pressed.

is

when the

the

o{

lhe

6pd

batteries

4 x 1.5

is

V

continuously

used

is only

When

display

output

the

display

range

OO

lighted.

in

the

display

is

lighted

code of

The

from

code

The

0055.

or exrernal

Plvl

the

2517

is switched

again.

range

the

function

the

0055

OO

means

by

the display

E,

off

counter
indication

counter

range

determines

the

of

PM 2517

the

the

and

determined

is

of the Oo

that the

power

I v

switched

is

E is

polarity

output

by the

0059'

correct

supply

on for

measuring so the

still

of

function

Plvl 9218.

40

sec

Fig.

1O.

20

[-,

r

'..t

3.3. DETAILEO CIRCUIT DESCRIPTION

(

3.3.1. General
The PM2517

signal. The
the
results to the display

Fig. 11)

is built up of the analog. ADC and

d.c. voltage signal is supplied

digital signal trom the ADC

(Fig.

11).

is used to

digiral section. All

ADC and converted

to the

control the analog

IÄL

OIG

COIIIROL

input signals

into a digital

section and

D SPLAY

are converted

signal.

ADC and

Into a

ln the digital section

to supply the

countrng

d.c. voltage

r

*--l

L

L

t

ö;

Fig. t

l.

In

the'detailed circuit description the sections

3.3.2- Analog section

3.3.2.1.

voltage measurcments

Dc

(Fig.

12)

will be described

separately

in the order as shown

in figure

'1

1.

21

o

Range

10 v__

100

1000

The input circuit

ln the above

given.
Adjusting the
The lOOox attenuation,

R

201 / R 204
Adjusting
meter R 207

The a.c.

3.3.2.2. A.c.

Range Attenuaiio n

100 v-

1000

Attenuation

10
10

v­v-

The 10x attenuation

signals are

voltage measurements

'1000
1000

for d.c.

mentioned table, the attenuation,

10 x attenuator is

with R 205 / R 208

IOOOX attenuator is

the

(fine).

filtered

10

10 v-

v-

'

10

1000

1000

RANGE

RNGB

0
0

1
1

voltage measurements is shown

is

achieved

made with resistor R 203

which is

switched

ll

made with the cut

by

out

the

(Fig.

13)

RNGB RNGA

0

RNGA

0

1

0

1

with the voltage

on by the signal

Ri

the ADC.

of

combinations

RANG E

0

0

1

1

0

Input

the input sensitivity of

away

R2O1 , C201 and

Input acldc

convertor

l

I

ADC Ri

0.1 v
v

0.1

in figure 12.

division of R 2O1

(coarse)

RNG8, is achieved by the

resistors

v

0.1
1V

0.1 v

Pful

l\,lQ

10

lvro

10

tvt

I

9 t\,1 0'l

the ADC and the

R

I

potentiometer

and

R 206

and

R2O2, C2O2.

Ri PM

2l\ilQ
2MA

r\,1

1

802

1 r\4

801

E

2517

0'l

2O4 and

R 208

E

2511

F ET switch

v

201

---o--

--r'o-

_+
_a-<-

range control
Ri of the
R 204

voltage division

(coarse)

-€o-

-{o- -/o-

--..{--....o-

qH--}+-

ADC.

(fine).

and

FET

switch

v 301

potentio-

v 302

-{o-

are

of

Input
ADC

1V

lo

J

J

l

J

J

'

jnout

max.

-

The input circuit for a.c. voltage measurements is shown in

attenuation, the

-

The 10x attenuation is made by the voltage division with components

R

306

-

The 1000x attenuation

R 306

The FET switch V 301 can

Ron of FET's
The
switch V 301 has no influence

-

AC/DC

In the
determrned

By
convertor is rectified in
current from the Rl\4S
Capacitor
the internal

-

Output AC/DC
The

R

312. The voltage

voltage

600 V rms.

range

control and the

(parasitic

//Cp

C 307 and Cp

//

attenuated input voltage is supplied to input Vin 1 and

convertor.

ac/dc convertor the difference in voltage

by

this the input sensitivity of

C 302 is an integration

automatlc zerc

output current from

is made by

capacitances). A d.c. voltage component

made the voltage divider R 301; R 302

as
(parasitic

considered as an ideal switch in series with

be

switch V 301

Vin 1-Vin 2

convertor.

is filtered

adjusting

gives

on the 1000x attenuation.

R

the acldc convertor

the current rectifier

section is

(AZl

the ac/dc

by R

resistor R 3l1

input sensitivity of the ac/dc convertor

capacitances). The 1000x attenuation

an incorrect

=

(R

.

proportional

capacitor for the
of the

convertor
313

measuring result. This is compensated

'Vin

(Vin

1

R 3O7or R 308+ R 316),and the srate

(0.1

V

converted into a current again

and

to the RIVIS value of the input signal

RIVIS

section. Capacitors C 303 and

ac/dc

convertor.

is

converted into a

and C

and

310

(coarse)

and

then

potenriometer

figure 13. ln the above

is

blocked

Vin 2

is converted

2)

1 V) is selected. The current

or

voltage by the resistor R 310 //

supplied to the ADC. Adjusting

R 301 ; R 302

by capacitor C 301

C 305; C

//

is switched on by

its

-

(Vin

1

Vin

into a current.

R 3'12

mentioned table the

and ADC are

C 305;

//

306

own on

2).

(fine).

R 305;

and

resistance
in

the

In

this

of signal RNGA

by

R l\,4S section.

the

(V

in 1

C 304 are

given.

C 306 and

.

R 315

FET V 301.

(Ron).

following

way the

The current

in

-

FET

(seetabre,.

acldc

the

The

V

2).

in

used

R

311

the output

//

The

way.

is

for

+

I

)

J

l

..:

t-J r;1.

l5

t^

T-;_l

:

L.l

o

jri.

-4..

22

f,,

24

ll

['

-t

,-l

3.3.2-3- D.c,

-

The input

-

Range 100

ln the

and

-

Protection

The

When
still on

The

means

(m)A-

When

-

Range

The

-

In
following
When

is

current

the

done

Measurements

circuit for d.c. current measurements is

mA-.

function mA:-:: only
'1.

R

Resistor R

'100

mA

range is

in case of measuring in

input

the

high current

of a switch

the input voltage

'10

10A range isdetermined

digital

a banana

by means of the 10 A

Range Input FD

100 mA

.10

A

terminals, then due
can damage the

in

the

A-

section ofthe

way:

plug

oo 0055

(Fig.

is

605

protected

position

function

at the input is too high

is inserted

0
1

l4)

shown in figure 14.

100m,A range is available. The 100 mA range is

for

used

switch. In

adjusting the 100 mA range.

by fuse F1

voltage function,

the

function

(m)

A'-.

by shunt R1

PM

2517switchinq

in the 10 A socket

switch

(3'15

mA

low resistance

to

switch. To

which is situated between

case

this

which

the

then

(12

m Q).The 10 A shunt is adjusted by resistor

from

is buiit in

quick).

is switched

values of the shunts a high

prevent

input

fuse F1

the

the displav is switched from 100 mA

the 1O A socket.

over to the

(m)A

positions

the

connected with NTC resistor R

mA to the 10

first

is

will blow.

,]00

this the

determined by

(m)A

function

current is switched.

ranqe is also

of the

A range is effected in

with the voltaqe

protected

iunctions

10 A. This

to

shunts R

by

oC

and

601.

R608.

603

the

-l

lr

I

*t

r'

:l

L,

t.
t

e

r

tl

t,

3.3.2.4.

-

General

Resistor R

'

The ADC has

A.c. current measuremenTs

-

The input

-

The a.c. input current

3.3.2.3.). The voltage from
convertor
input
has

The AC/DC

Protection

The
Adjusting

The

potentiometer

610 is used

input

an

for

circuit

0O0061 via switch mA- and

circuits, by means

no influence

BNGB RNGA

X

a.c. current ranges

a.c. current ranqes

{also

RANGE

X

convertor

R304.

get

to

an equal load in

sensitivity

(Fig.

a.c. current measurements

range 100 mA

of connecting

refer

of 0.1 V in case of dc

l5)

is shunted

the shunts

to a.c. voltage measurements

Input

AC/DC

convertor

the

lm)A-

is

shown

(0.1V

C601. Input

-8.5

and adjusted in the same

end of range) is supplied to the Vin 1 inpur

V

supply ro the

0.1 v

has an input

are

are adjusted

sensitivity of 0.1V in the

protected

in the same way

by

means of influencing

(m)A-

and

currenr measuremenrs.

in fjgure

Vin

2 of the 000061 is disconnected from the

3.3.2.2.).

put

ln

ADC

as the

15.

gates

of V

a.c. current ranges.

d.c. cuirent ranges.

the

sensitivity

function.

wav as d.c. currents

301 and V 302. Signal

of the ac/dc

(refer

to

of the a.c./d.c.

R NGB

convertor with

14.

-8.5v

F0

107031

ADc

io
O,1V

END OF

RANCE

a

I

t.

t5.

26

3.3.2.5. Besistance

-

The resistance

-

A known constant current
the un known resistor

measurements

measuring circuit is drawn

(Fig.'s

which is supplied

RX.

16. 17 and 18)
in figure 16.

programmable

bV

the

current

source OO 0063

r.
r

I

flows through

t

Dependent to the range
R NGB and

lmA

100

r1A
gA

10

1

,uA

100

The measuring

resisto(

the current

the signals
The voltage over Rx

-

To

avoid incorrect

f ollowing way:

The voltage

amplification
The output voltage 2

is available
available. By selecting the same value for R 4Og as the
current of the

lrx'= lrx

-

Protection

By

means of

protected.

is
The

high voltage

prevent

To

diodes of v 450 is connected to vx. The

compensation amplifier.

compensation amplifier via R414. In this way the

fig. 18) in the same

R NGC

trx RNGC

txx

000
001
010

nA

lrx'=

diodes start conducting at - 2.4

011

currents

R 4'11

and

multipliers

RNG.

over

is determined by the resistors R 406/R 408.

(from

ADC

+

|

adc-

(see

lrx

the PTC resistor R 401

{current)

a

that

(manual

(see

table).

RNGB RNGA RANGE

in the

potentiometer

{] )

(Vxi

reading,

(Rx

Vx) is

Vx is
input

the

is compensated.

| comp.
figure

on

part

of lrx

The

way

as the compensation of the I

or automatic

0063 are

OO

R 403.

gives

wfricfr

is measured by ADC

the input current

amplified

supplied

terminals)

As I adc

17).

input

the

(refer

common

2x by

to one side of resistor

which means lhat over R 4Og a voltage of

=

| comp

and the

V voltage difference

terminals

to figure

point

selection) the currents

100 K

derived {rom a reference current source

The output current

the currents as shown

(-1V

of the ADC has to be compensated.

the compensation ampliiier in

bridge rectifiers V 450 and V 451

PTC R 401 becomes high ohmic.

'lB)

_side

of v 450 is connected uia R 412

of V 450 and V 451 is connected to the

are selected

-1

1K

10 K

1M

10 M

of the reference current

in the above

at end of

R 409.

input resistance

between inputs

is leaking through the

leaking

current

adc.

V

-1

V

,1

V

-1

V

range).

On the

through the diodes

by the signals

which

source

mentioned table, dependent to

is

This

done

the OO 0063

other side of

rhe ADC

of

(BY

Vf)mAland 0.

protection

R 409 voltage Vx

-

2 Vx

to

Vx = Vx is

lMf2),

110

'164)

diodes, the'v

the _ vin input

output of the

is compensated

R NGA,

is

adiusted

is

supplied to

in the

(+Vin).

the

the current

In case of a

with

The

input

source

side of

of the

{refer

t

t

t
t

5

t

t

t
t
t

t

r

the

t

to

[-

3,3.2.6.

Diode measurements

In

the diode

same way
The voltage drop over the

Forward

Ge 100.0...300.0

si

measuring range the
resistance

as

500.0...800.0

(semi

measurements

conductors

OO 0063 is set

diode is

R

eversed

Ge )0

si > o

)

position

in

in the 1 kQ range

measured by the ADC.

uverrange

1 mA. Diode measurements are

(refer

to 3.3.2.5.).

performed

in the

t
t

r,

['

o

I

0

Fis.

16.

A

-L,-,,

1:'.,,

tt

rtg. t /,

n

''l

0

Fis. 18.

28

-;

r1

"t

2. 7. Temperatu

3.3.

3.^:

0

lY-

,*,

Fis. | 9.

-

-

re measu

rements

iH-PROSE

4:

1;).

The

temperature

The temperature
potentiometer

The voltage between
the resistance

0063.

oo

measuring circLlit
probe

R 502. At O

R

probe.

of the

is drawn

(resistance

probe

thermometer)

oC

the bridge circuit

/ R 503 and

The bridge circuit

in figure 19,

is mounted

is in balance

R 501

R

/

is suppliea

in a bridge circLlit,

(at

is measured by

504

with 1 mA

0

oC

the

the ADC and

from

which

probe

resistance

programmible

the

is balanced

proporfional to

is

with

is:35

5)).

curr-"nt source

[_,

t-r

t
t
t

t

e

t
t

t

3.3.3. ADC

3.3.3.1. Genercl

The ADC in
C 103 and switchinq
The

basic of
capacitor around a
The number of
Each value of Vx has a certain number of charge/discharge cycles of
fixed time.

Charging/Discharging

Charging the capacitor

(l

Vx

ref + Al).
Discharging the
caused
The

constant

Fixed level

The switching level

the comparator
When the level is

pulse.

clock

the discharging current

Fixed

time

The fiied

oo 005g
oeriods).

(F

ig. 20)

PN4

the

by Vx ( I ref - AI) .

The output of the llip flop controls the switches

time

(refer

2517 consists of a

part

OO 0060) according the

the Delta Modulation ADC is counting the dif{erence in time,

fixed

level during a fixed time.

pulses

counted during the fixed time is

is made

capacitor

reference current I ref is

between

(,=

V), the

0

reached

is determined by 12288

3.3.4.2. CONTROL

with

is made by the constant

charging and

flip ilop

the comparator

I ref - A I are connected to the capacitor.

voltage

a constant

produced

and the clocksignal

LOGIC). One

to current

re{erence

by

discharging is determined by

will

switch, causing

clockpulses

convertor

Deita Modulation

proportional

current added

reference

the OO 0064

in the

of the clockoscillator counted

complete

current

the flip flop to change
by which

measurement

(OO

0064) and the

principle.

used between

to the unknown

which

also the shape

with

the constant

substracted

is determined by an external

voltage

the

0060.

OO

the charging

consists

ADC itselt

charging and dischargrng

voltage

differs

with the

constant

between the

its state on

current

by the timer

of two

current caused

fixed times

(capacitor

Vx.

within the

with

current

resistor

I ref + A I and

R range.

inputs ol

receipt of a

in the

(measurrng

t
t

a

t

t

r

L

t

I

t_

t­L

"l

l
l
l
l
l

I

29

I

Output

The output signal of the ADC

of the capacitor. Charging the capacitor will

ln

signal.
discharging times of the capacitor.

'1

Logic
discharging times differ,
measuring
proportionai

Note: For every value

way

this

the

of

periods)

different are made within a measurement.
When measuring the DATA signal

and how the counter is counting

the analog signal is converted into a block siqnal

DATA signal

a number of cycles are made. The total result of the counter

to the unknown input voltage

(DATA)

means

up and

a counting

of Vx a certain

result is lcft in

is a square

logic

number

due

(up

wave which

give

a logic 1 and

0 means

Vx.

of charging/discharying

to the varying

or down).

down

the counter

pattern

determined by the charging/discharging

is

As the

the DATA

charging

discharging willgive a logic 0 of

which is dependent to the charging

counting
after on cycle, Within

of clockpulses.

after one measurement

cycles of which

only can be seen

one measurement

also the times are

if a data signal

and

(two

present

is

times

and

is

l
l

l
l
l
l
l

I

lo

up
101

101
101

102

100
102
101
101

Example

Note:

d own

The data signal shown in this diagram is

data signal in

For

in

1
1
1
I

of a data signal

general.

better understanding for a measuring

PM

the

2517 has

RESULT 8OO:2=

12288

result

100

99

'100

101

99
102
100
100

clockDulses.

'lst

measuring

2nd measuring

400

-:a

not

period

for

valid

of 407 clockpulses

period

period

PM 2517, it only

the

gives

an

is

choosen.

up down

1l

1.r"1

A measuring

impression of a

period

resu lt

RESULT

0
0

o

0
O

l

I

l
I

.I

.I
I
1

MEA5IJFING PER]OO I'I€ A5URING

-

In

the 2nd measuring

oo

0064).

-

In

the 2nd measuring

*

The number

The displayed

V

in
I ref
R

range
N

value can

period

input

period

the up and

of clockpulses is

be

calculated in the Iollowing

Vin

-

R

I ref

=
=
=

=

range 2

Input

voltage of the

Constant reference

Range resistor
Number

of clockpulses of

P€R

OD

2537

5T

voltage

divided by

N

current. Two ranges available

Vx of the

pulses

down

bV the up/down counter

two

ADC

one measurement

OO

are

way:

0064 is inverted

inverted in the OQ 0059.

12288)

l2x

for auto zero

in the OO 0059.

(Refer

to 3.3.3.2.

30

rl

'--t

t

3.3.3.2. Voltage to current
General

The OO
the input voltage.
selected: viz. 1 V

The

voltage which is

inputs

of the

To

avoid this auto zero is

When a measurement

OO 0064 while the
(l +

Al). The signal in

is

connected to

the ADC

+

Vin + Voff

The

result

be Vin

Circuit
The

unknown

theOO0064thevoltagedependenttotheselectedrangelsswitchedtotherangeresistorsRa(R

R

and

6

converted into a digital

(input

sensitivity 1 V)

FET

is

(fine).

With dual FET V

OO

0064. Dependent to

via R 504
Note:

converts

0064

OO 0064.

zero. The signal which is

and the result

counter in the

without

descriDtion

(R

used in the input

Measuring

the internai

voltaqes

111

// R 114\. The

or connected to

convertor OO 0064

the unknown input voltage into

By means of the

(Refer

and 0.1

the | + Ll

V.

converted into a constant

Internal

carried oLrt

is started

-

input is connected

the 2nd measuring

of

from the RMS

up/down signal

can be adjusted with

(1st

one measurement

(l

ref + ^l)

(l

ref Al)

control logic divided the number

of{set

current

circuit. The internal reference I
101

and the

AZ

the

input

the

and I - Ll

(Fig.

selection circuit in the OO

to

specification of OO

offset in the OO

w,th

measuring

to zero. The signal

period

converted wil beVin+ Voff

of

the OO

convertor or the

Al {lowing

(DATA)

AZ

signals

and AZ

srqnals thp

voltage

signals disturb the measuring result.

20)

a constant current

0064

giving

0064)

current, is the difference in voltage

0064 can in{luence the measuring

the

of

did

period)

the input voltage is connected to the - input

will be:

0064.

through

by the ADC. The ranges Ra

resistors R 112

the Input

FET

via

AZ

srgnals

the unknown voltage is

attenuators are supplied to the

ref is adjusted by means

gares

switches

aod

which

is converted

of counted

resistors

the

and R 114. To obtain a high input resistance a dual

voltage is switched

FET

of

V

V101 and V 101'

which is dependent to the height

between two input sensitivities can

different

two

AZ from

(l

pulses

102 anrl V 102

rhe

supplied

will

^

Both srqna s

).

bV two. The

is the väriation in current

(input

of R 107

to the + and

constant currents.

which is

result.

con(lol

be

sensitivity

supplied

logic.

to the + inputof the

+

+

Vin

Voff

while

subtrated

are

displaved result will

gates

of FET V 102.

112

0;1 V) and

(coarse)

input

are connected

be

to the

the + input

In

In

R 110)

i/

which

is
Rb

and R 106

the

of

to zero

(öJ

t_,

of

two

t

r

L

t

|-

r

L

t_
t,

3.3.3.3.

ADC

switching

The ADC consist of the ADC itself

In the

OO 0060 the comparator,

The

clock in the ADC
kHz.

100

For

further

part

OO

controls the timing of the

information of the

(Fig.

0060

the flip

OQ 0060 reter to

20)
(OO

0060) and

the integrating

flop,

the charge/discharge

PM

2517. The

chapter 3.4.5

capacitance C 103 / R 104.

switches and the clock is situated.

clock trequency may differ from

80

kHz to

l
l
l
l
l
l
l
l
l.

JI

l

Fig.20.

l+r V-

CONV€RTOR

r

a

32

3.3.4.

3.3.4.1.

section

Digital

General
ThedigitalsectionconsistsofthedigitalcontrollCOOOO5g,thedisplaycontrollCOO0055andthe

display.
As control signals

CLOCK
DATA
UP/DOWN/O

(data

H

D

AUT

FA,

As output signals

RNG

OVR

DS1.
AO, 41, 42,

POL

hold)

FB, FC,

A, 8, C

DS2,

for the

FD

for the

LAEN

A3

digital section

from

:

the

from

:

the

: determining

from the

:

determining auto

:

function in{ormation

:

digital section

range inlormation

:
:

zero signal

auto

: overrange

digits

:

: data information,

signals

: unit indicaction,

siqnals
PolaritV of the OO

:

are used:

determining

ADC.

determining

ADC,

the

probe

are

for the display

select/latchenable

FA, FB, FC,

FA, FB,

(Fig

22
the

the

ranges in

input

ranging

used:

determining

determined

determined

FC, FD and

case of

from the

(Fig

22.)

in the different

qave

to

used

FD

and

0059

)'

timrng
displayed

manual

Junction

functions

period

AZ

the

overload

Ior

serial

bY

RNG A, B,

bY

A, B, C, and

RNG

value

ranglng

selector

of the

paralle

and

C

ADC

display timing

POL

-T

Ll
l-l

t1

t-l

Il

It

t,

t

e

t

t

Fis. 2.

For detailed information of the signals

3.3.4.2- Control
The

control

information is

When the
and timing settling,

first measuring
The carry signal ol the
ADC are switched

After the

period

The maximum contents of

OVR

signal

or auto ranging

(Fig.23)

logic

logic, comprising

given

about

instrument is switched on the

the counter starts counting

period

with

waittime which

which is also

(overrange)

12288 clock

will be

the

OO 0059

the timing in the OO 0059.

12288

is

timer changes the state of

the

will become

performed

clock

AZ

signals

is also used

the counter is 2O.OOO-

also refer to the specifications

is the central

measurements are started.

the result of the

pulses

which are counted

the

(refer

to 3.3.3

for input settling, the

pulses.

After the

Dependent to the instrument

active.

when the measurement

processor

control
ADC)

2nd measuring

lf the counter result during

is completed.

lC's concerning

of the

Pl\,4

of the

After the

ADC during the

by the timer.

At

logic.

.

result is counted again

period

2517.

waiting times

first measuring

the same

time

result of the counter

the

one measurement

settings

(chapter

ln

flow chart

the

{or input settllng

the input

in the second

(NrlAN

AUT), overrange

or

3.4.)

abridged

period.

voltage of

is ) 10-000,

The

measuring

is displaVed

the

t
t

t
t

t

t

t

r'

*l

rl

t-

tl

I

_l

I

-

-

:J

I

I

33

I

I

I

I

J

I

I

_t.

I

J

_

I

J

I

J

I

J

3.3.4.3.

Explanation of states

|

WAIT

Z

Wntf

lst

2nd = 12288 clock

and

fulEASU R ING

rOD

PER

SfOp

RANGING

coNlt\rAND

RANGING

Control signals

Clock
The

clocksignal

The

timer.
viz:

switching

Data

The duty cycle of the

(refer

to ADC 3.3.3.). The
UP/DOWN
During the 2nd measuring

case of

.ln

ranging
V

counter

. . . and V

=

Fixed waiting,96 clockpulses.
The time is used

=

Variable waiting time. The timing

before a measurement is started.

=

End

of the

=

lvlanual or automatic ranging command

=

Selecting the correct measuring

(Fig.

54 and 22)

(80

Hz

. . .

of the timer is supplied to the control logic. On

output

of the signal AZ,

data

counter

manual ranging UP

is counting the clock

pulses

the

\

the number

period

are

for input

pulses

determined by the timer

measurement, reset U/D

kHz)

120

signal is dependent to
data

or DOWN

of

determines the timing

AZ

signal is supplied

converted into the range code I x

ranges

which

by

F,ulses.

the DATA signal

pulses

is four. BV means

settling

of the input signal

(lMax.

10 clock

counter

range.

in the instrument and

input of the ADC is switched

the

the height of the input

via the UP/DOWN control to

Data signal

is inverted inside the OO 0059

from the UP/DOWN circuit are

logic 1 is count up,

of signal

has to meet a

pulses).

this signal the control

depress is one range up

,f)

is

this

certain condition

is counted

(refer

voltage supplied to

the UP/DOWN counter.The

loqic 0 is count

UP/DOWN

supplied to

extended

to six.

by a - 12888

will take action

logic

ADC

to

the

N/A

the OO 0059.

or down.

3.3.3.).

PM

2517

down.

.

In the ranges

ln the

Aut

means of a

By
section is switched to auto
range

{V-_
untill the

The same happens

Down ranging is repeat untillthe contents of the counter is larger than

Up/down/aut ranging circuit
For

automatic

Dependenttothefunctionselected,aspecifiedranqeblockisavailable(V:-;:V\,=4ranges,O=6ranges)

UP or DOWN

to

specification of
The ranging
unit N2.

logic

1 ot signal

ranging

V- or k()

,

contents

of the

during down

or manual ranging the following conditions have to

pulses

the

consists of a switching

circuit

then the control

)

counter

have no

effect when the lowest

OO 0059, chapter 3.4.4.).

(auto

AUT

mode. When the

is less than 10.000.

ranging is the automode the

ranging),

part

which

result of the UP/DOWN counter

logic switched automatically to a

highest range is met in the specified range block.

or

situated

5T25t6

on N1

generated

is

down level for the

and

by the UP/DOWN/AUT

900.

be met:

an indication

circuit,

is larger

higher range.

UP/DOWN counter

part

situated

than 10.000

This is repeated

on the display

is 900.

digital

the

in

(Reler

a

Fis.24.

c0N0rT

0N

MEASUFING
PER OD

34

c,ocK

PULSE5

WAITI

,

WA]T2, JsI MEASUR

NC PER]oD WAITI , WAT2

COND T]ON

MET

2nd
M€ASURING
PEF

OD

NG

RANG

RANG NG

COMMANC

2nd MEASURING PER

,

oD STOP

5T?5rs

Fis.23.

36

When

switched
Thtsalsooccurswhen,sswrtcheotromasingle-rangetunction(f
function

In this

case

The

thyristor

means

manuat

get

To

Manual

-

When
the

start
also
The

the thyristor

-

Chanqing
from

out

In

the functions

determined

ranging

the DOWN

oo

0059. The

conductjng

be

connected

thyristor

a function

on

in a multi-range

-:

{V'.V

the kg input

of the manual

by

will stay in

to

rhe

above mentioned

.

starts

conducting

rangtng.

(m)

A . . .

the

OO 0055 only,

or

UP switch

logic

and

the

the

AUT input

transistor

with no

kS-l).

of rhyristor

and a logic

ranging

{m)

,

is depressed

({)

pulse

1

-8.5

this

ranging

V

state until

V705

state

(logic

causing

facilities

function,

V150 is

0

state

the AUT

oC

A^,

of the

and

UP. DOWN or

a

is also

supplied

0) which
OO OO59
it is

switched

the A indication

can

only be

to a

the instrument

activated

(-8,SV)

switch must be

no manual

f

AUT

logic

1 signal

to the kq

is

supplied via

(no

done when

function

wlll

via the

is

supplied

pulses

(ü)

auto rangingJ.

via

the

lamp is

switch

with ranging

be set in

oC,

I

function

to the AUT input

oepresseo.

or auto ranging

not

are

will oe

input

of thyristor

function

the

aq input.

lignreo.

AUT is depressed

facilities.

the manual ranqino

-

mA

switch

relevant.

connected

-

The

o. -al

and R727.

js

possible.

to

V 1b0.

switch

to R 723 aod R

tevel

8.5

the relevant inputs

state.

tioa.nultr

of the

OO 0059.

ranges

The

The thyristor

is aiso

suoplied

when

or

switchjnq

are

witl

].24

via

rarge

which

of

will

(
l_,

t_

l-

t

L

t

r

L

r

L

0

Auto

ranging

-

When
logic
The

UP/DOWN

MAN

-

When

ranges

DH

With

the

This

means

Data hold

-

External

-

lnternal

DH

loqic

until

DH

signals AZ

The

DH

signal

Via

a

one shot

swirch

AUT

is

depressed

1

is connected

{ü)

inputs

of the

indication

the instrument

V-.

data hold

that

rs generated

by interconnecting

during range

Resistors

OA

1 means

becomes

andAZ

is stopped.

V-

or kf/

signat

present

the

In

R

| | 6 and

0059 is not

end

of measuring

logic

0 The instrument

are

bloo<eo.

is

also active

DH

is active

is

is

two wavs

switching

a iogic

to

the aq input

OO

(or

A indication)

switched

possible

value

short

in

for

on or when

visa versa,

to hold

of the last

viz:

point

in

Rl

| 7 are

circuited

cycle

the V-

about

(g)

I

wiil be

of

the thyristor

0059 are

S

the functions

and

4g0

connected

it

the instrument

the data.

completed

probe

of the

used

as cutent

in case

af

and no

transfer

is

measuring

(m)A-

(Refer

msec.

connecred

and

ro logic

is

switched

will aiways

measurinq

input

to circuit zero

V-

and

limitots,

external

pulse

but

the

functjon

to

OO 0055,

to the AUT

the input

(_g.5

0

from

ranqes

start in

will tle held.

{m}A-.

so that

data hold.

of measLrred

data is

not ciisplayed.

when rs

switched

chapter

input

of

the OO

or rransrstor

V)

again and

(m)

MAN ranqe

(#)

or

the

output of the

data.

from

3.4.3)).

V

A

(m)

I _

,

O socker

The

control logic

At

one range

0059. Also

705.
lighring

the

oC

A.v,

mode.

one shot in

the same

to another-

of the

o,

to

the

is waiting

Irme arso

t

a

t

t
t
t
t

t
t

3.3,4.4.

FA, FB, FC, FD
The function

Dependent

0055,

In case

inside

Output

RNG

Range
ranging
Dependent

Chapter

to the function

chapter

of

10 A

the l0

A socker.

Signats

A,

RNG

in{ormation

counler.

to the range

3.4.4.

code

is determined

3.4.3.).
signal FD

(Fig.

54

B, RNG

from

selected

is switched

and

22)

C

the

oooo59

selected

by

the switches

FA.

FB,

by

means

is determined

a

specified

o{ the function

FC,

FD have

of

the banana

by the

range

brock is

setector.

a

certarn

signats

avairabre.

code.

plug

activating

uP/DowN

Reter

(Refer

to the specification

the switch which

and {2which

to specification

of OO

is srtuated

are supplied to the

oe

of

0059.

t

Ij

d
i
d
d

I

l

31

l
l

l

l

-1

I

J

l

I

J

lr

l

l

l

Az,fr lAuto

auto

The

3.3.4.2.
The AZ
One

OVR

In case of overrange. which means that
(logic

When

DSl, DS2,
DS1,

Signals
Signal

LAEN

AO, A1, 42,
Signals

The signals
Together

POL
The state

when
When

'

The

Control
and

AZ

1

).

manual range

a

DS2

DSl

LAEN

is not used in the

AO,

more
more dordn than

detection

zercl

zero signals

AZ

period

LAEN

(digit

and DS2 are

is used for

A3

A1, A2, ,A3 are

appear

with the control

of the

up than down

are

Logic).

determined

are

is:200

is selected,

select)

bit

in

polanty

is made by

switching

by the clock

msec.

signal OV

LAEN

anC

s€lecting

latching

PM

parallel

signal

up

the BCD

2511

the data information

and

signals

(logic
puises
pulses

polarity

the

input

the

the result

R

(latch

enable)

the digits

E

DSl,

are
are counted

for serial

information

word serial

DS2 and

rog

= -,

0

counted

detection

voltages to the

12.888 timer'

the

and

is ) 10.000

the displav

cause

will

for timing

used

are

display'

a LX

for

from the

informataon'

LAEN,

=

1

in the

nreans

this

circuit

OO

the data

+)

is determined

1st measuring

-

inside

of the

inputs

counted

to

of

display

0059'

is used

by the state

penod

polarity

the OO 0059'

(Refer

ADC

clockpulses,

be switched

display

the

serial

for

this

siqnal

to overrange

unit.

display'

the

of

means

3 3

to 3

OVR

(Refer

incoming

+ polarity.

ADC and

data

active

)'

signal.

becomes

(displav

Fig. 25

O).

l

l

l

l'

l

I

J
J

I

I

3.3.5.

3.3.5.1. Genercl

3.3.5.2.

3.3.5.3. Elank display

Display

The displav-section
demultiplexer

p.c.
strip.

Of the strip

ln the

Data 43,
Thedatabitpara||e|-wordseria|isderivedfromthedigitaIcontro||coo0059andis5upp|iedtotheBcD

to
As a serial
following order:
The decoded
signals

Via the btank

unit

N2. The

board

PlVl 2517 X all

42. Al

7-segment

displav

DS'1 and

point, polarity

PM

the
When
about 40

2517

push

sec. delay is energized in the circu it built-up

(Fig.25

N2

consists

for serial display

interconnection

not all contacts

contacts of the

A0

,

decoder.

ts used

t02,

trom

data

DS 2

(40

sec. circuit)

of the

input

and unit indication are

E.

button DISPLAY

54)

and

four 7-segment

of

are used

data

the

to0 and

t03,

the BCD

the correct

HEF4511

is

and the

polarity/unit

between

in the

are used.

strip

is switched

(Refer

101

to 7-segment

are switched

LED's

7O1l4),

lD

not blanked. Blanking the

activated,

signal BL becomes

LEDs a BCD

units in the

the

Pl\4 2517

the

with

to the

decoder

is

it

7-segment

to

indication.

E.

speed

timing

is supplied

on'

possible

of V 7051706,

The

PM 2517

of clock signal

diagram

to

blank

to

display is used

logic 1 and the

decoder,

display section

is made

25)'

Fig

LED'5

the

the

R 719/720/721 /

a dual

by a 2g'pole

The data

1

DS

Dependent

in the

data

in the STAND

display

4 decoder/

1 of

on one

is built

interconnectron

is switched

to

displav

is allowed

unir

on

decoded

the

The

BY

light

to

N l

small

in the

decimal
position

After

of

I

-l

I

38

circuit the RC time

fn this

connected

R 721 will be due to the

FET

of the
connected

D ISPLAY is depressed, C

gives

which

switches

3.3.5.4.

3.3.5.6. Decimal

Serial displav

Signals
The decoded signals
ln case of overrange
deco.ier
the other

The decimal
corresponding

is determined

=

(DS

to signal

V 705

to input BL

a logic

again and the

DS1 and D52 are supplied

HEF 4555 is blocked

part

point

DS

will result in a time

1 ro the BL input

circuit is

(D51,

DS2, DS = Digit Select)

switch the

(indication

the HEF 4555

of

DP2,

lDP3,

point

information is directly

decimal

1

1.
resistor and capacitor

of the display

701 is discharged,

in

to the

relevant LED's

> 9999 = OO0O)

(No

(enable)

DPI)

points

via a 270 Q resistor

bv C 701 and

500 Hz and switching

about
of about
unit via

which means

rest

its

enable).In this

40 sec. In case

R 720 which

FET

position

dual 1 of

in the order

derived from the

R 721. C

between

4 V. The

V 705 starts conducting,

thar the display

again.

4 decoder D

signal OVR

case only

(see

table and

701 is connected

0 V and - 8.5

RC time. together

of sTAND

means blanked

702

102,103.

is true

LED 102 is

OO 0055

OO 0055

BY, logic

causing

is not blanked.

timing

{see

tO0 and

(logic

ignited asthis

703/14/151161

lD

+8.5

(-8.5

0

When

40

Fig

part

one

and

chapter

V and

V) will be

push

V 706 to conduct,

sec.

25)

ol the

is switched

is supplied

to

V). The resulting voltage

with the switching

display.

transistor

After

diagram,

101 .

one

1) and

specification,

R 721 is

point

button

V 705

FET

dual I of 4

3.3.5

on

via

to the

3.).

h

tr

t_,

3.3.5.7.

.

1
0
0

Signal

I\,1, R NG

RNG C

DP2 DP3

0
0

(O

OO 0055

Ranqe DPI

9.999

99.99

999.9

Polaritv and unit indication

Unit indication
The unit

When
and

Function

indication is made

no

no LED indication

is lighted the

LED

ks2

+

-60...+2oo

oc

0

1

C

0

1

with

position

or

m

combination

the

the function selector

of

lVlQ ) means range

of LED's and the

determines

(see

kQ

Switches

table below).

v.\,/v...(6,5)
v.v/v...(6,5)

kst

KQ

kr)

position

the unit

function

of the

indication e.g.

LED

rvfl

NUro

selector switch

function

lighted lnd

....

.... a

ication

tlls2

kf2

kQ

S1

[,

Ir

[,

t-

t

?

t

I

(m)

(m)

Polarity
The

The information

3.3.5.8. OVR
In case of overrange

Only digit'l02 is lighted.

A­A'v

indication

polarity

is indicated

(overrange)

-)

(+

or

by means

for

LED's is directly derived

the

signal OVR becomes logic 1 causing

oi LED's.

from

OO

the

digits

0055

103,

(D

703/18/19).

101 ana

100 to

be blanked'

t

t

t-

t-

t"

I
I

_t

LAEN

I

1

DS

I

DS2

l

_-_Tq-

l

DIGITS

l

I;;

[]::

1

rol

l

DATA

{:i

l

l.^,

l
l

DECIIVAL
POINT5

l

POLARIT Y

l

UNIT

l

RANGING

l

i::;

[0,'

l.

i"t

lN/v/n

MAN

I
(a

RANGE

OVER

OVR

l

BLANKDISPLAY

l
l

toGrc I

L0G rc

INDICTATION

l
l
I
l

rrg, zc.

=0v

0= 8.5v

+000.1

MAN

A

NOTE:

RANGES

OR

DEPENDENT

TO
POSITION
THE
SWITCH

WHEN NO
DISPL

SWITCH

V.,^

mA'n,
THE

OF

FUNCTION

UNIT

AY,

THE

ARE

2. 517

ARE INDICATEO

S
UNITS SHOWN

VALlD

l'4

O

l'4AN

A

AT

THE

ON

FUNCTION

TIT

MAN

A

5T25ll

I
l

40

3.3.6. Power
The instrument

ln

the

voltage
When the
The input voltages
circuit consisting
The following
P[/]

9218:

supply

PM

2517

supplied

power

(Fig.26

voltages

and S)

powered

can be

a stabistor BZX 75

power

to the

is

switched on,
are

transferred to

of zenerdiode V

circuit is in case of 9 V

are measured in

by 4 x 1.5 V batteries

C2Vl is included in

power

the

850

!

+8.5

{BZX

the

circuit will

V

and

79

power

of by a 9 V external

external

start oscillating. The oscillating frequency

-8.5

=

C10), V 852

circuit

the

oI a

input

line of the external

power

supply - 7 V.

V. The

circuit

(BAW

62), supptied to V 801

2511

-7

5V

-r?
+0

5v

with a

5v

PM

power

supply

js

stabelized with

9 V external

o, Ö

ov

ü

(pM

power

the feed
(BC
power

92lg).

input.

is:

558).
supplV

The

back

160

kHz.

I
I
I
l
I

t
t

t

(aNo0E

v

85l

CATNODE

Fig.

Dependent
carcuit.
The
The
To

!35I

.

current

Rl/S

avoid

overloading

)

FREOUENCY
NOT'

CHAN6 NG TH€

to the function

source

is only

convertor

is

the

only

160 kBz

v^

selected

used

used in

power

NPUI VOLTAGE

the supply

in the

iunctions

the funcrions

supply

the

CIIANG€5 'IiE FREOUENCV

voltages

LED's in

e

V-

oC

.

the PM

are supplied

ana

*.

(m)Al

,

.

2517 E

0"0

ouü

_9V

sT25l8

via

are directly

the function

supplied

selecter

from

to

the integrated

the batteries.

.t

I

t

l

t

q

q

rd

q
q

q
q

t

41

3.4.

3.4.'1.

IC'S USED IN THE

SPECIFICATION

4511 B BCD to 7-segment

HEF
The HEF 451 1 is a BCD to
LOW latch enable input

(lTL),

and even active

When E-L is LOW, the

goes

Et

When

OF

7-segment latch/decoder/driver with four address

(ELJ,

an active LOW

HIGH

n-p-n bipolar segment outputs

state of the segment outputs

H lGH, the last data

remain stable. When i=il is LOW,

With ITL HIGH.

it.

circu

a LOW on

IB forces

PM 2517

latch decodet

ripple blanking inputTIET, an acrive LOW

present

on AO

all the segment

allsegment outpurs

GND

Fis. 27.

(A0-A3).

inputs

(Oa

Og).

to

ro

(Oa

A3

is dete-rmined by the data

to Oo)

are siored

in the latches and the segment

outputs are HIGH independent of all

LOW. The inputs ITL and IB

( -8.5V

I
c

b
o
I

I

I

V

Vss
AO
A3

IB
IlL

A2

HEF 45I1

)

an active

lamp test input

on AO to 43.

outputs

other input conditions.

do not

effect

the

latch

PINNING
AO

A3

to

'B

m

address
latch enable
ripple
lamp test

(data)

inputs)

input

blanking input

input

segment outputs

{active

(active

(active

Vss

LOW)

LOW)

(-8.5V

LOW)

)

L-

Fis.28.

sT2488

42

t,

t_

t

FUNCTION

EL

XXL

XLH

L
L
L

L

L
L
L

i

L
L

L

L

TABLE

lB ITL

HH
HH
HH
HH

HH
HH
HH

HH
HH

HH
HH
HH

HH
HH
HH
HH

HH

rnputs
43

X
X

L

L

L

L
L

n
H

11

H

TI

11

A2 A1

X
XXX

L

;

H

L

rt

n

I

H
n

L

a

n

;

H

TI

n

L

n

n

11

X

Ag

X
X

L

L

11

L

;

L

;
L

;

a b c

H H

L

H

H

rl
t-l

H

L

FI

L

a

n

TI

n

n

11

L

L

L

L

L

'-

a

L

L

L

n

L

FI
F

L

FI

n ;

F

H

L

L

LLL

ouTpurs

d e f

11

H

L

L

H

n

L

L

TI

I

TI

11

n

L

L

L

L

L

L
L

L

L

I

TIL11

n

L

L

H

n

L

H

TI

I

L
L
L
L

t

r

t

t
t
t

I
t-

r

L

r

t-

t

display

s

8

L

blank

L

0

I

2

H

3

FI

4

11

5

H

6

L

7
8

n

I

L

olanK

L

blank
blank

t

blank

L

blank
blank

=

H

H IGH

=

L

LOW

=

X

state is immaterial

H = Losicl

=

L

Logico

'Depends

DISPLAY

state

state

upon

(the

(the

less

=

0V

=

-8.5V

the BCD

lt

ll

Fig.29-

positjve

more

positive

code applied

I

I

voltage)

I

t-

voltage)

during

I

-t

the LOW

t_l

I

-l

to H IGH

t_

l_l

transitjon

tTt

I

of EL.

tt

-t

t,

t

?

t
t,
t;

l

43

l

l
l

1

3-4-2.

HEF

4555 B Dual

HEF 4555

oo 0059.

In case

of overload

which

means

The HEF
active
When
output is

4555

LOW

used

selected

1-0f4

decoder/demultiplixer

'l

a

to 4 decoder-demultiplexer

signal ovL

that the

enable input

as a decoder,Ewhen-H

digits'lOo,

B is a dual

by the data

becomes logic

101

1 of4 decoder/demultiplexer.

and four mutually

{ET.

lG H, forces

on A6

r---l

is

used

I and forces

and 103 are

Og

and A1. All

to decode

blanked.

the digit select

the

outputs 4,6

03
a2
0l
00

E

GNo

I

v

Fis.30.

Each

has

exclusive

to 03 LOW. When

unselected

outputs which

outputs

outputs

and 7

HEF 1555

two address inputs

are active H IGH

used

as a demultiplexer.

are LOW.

Ds1 and DS2 from

of the HEF 4555

Vss(-8.5V)

03

02
0l

00

AO

(Ag

(O0

B to low.

and A1),

an

to 03).

the appropriate

PINN

Aq

and 41

Og

to 03

ING

I

I

s7

^l

>__!J

I

rtg.

J t,

enable inputs
address inputs
outputs

GND

+

(-8

vss

-ltt

(active

5V

)

tuu

u-

(active

H

5T 2

IGH)

--.r

/.82

LOW)

OUTPUT
Ao At

0

0

0

1

i

0

I

1

Og

1

0
0
0

O1 o.>

0

0
0

0

I

0

,l
,l

o3

0
0
0

,|

44

l

t

3.4.3.

3.4-3.1-

OO 0055 Character Decoder Driver

General
The OO

Dependent on

characters
By means

is

0055

a character

the input information

/v,

-,

+,

of a clock input the output information is

Fis.32.

m. k, M, Sl, DP1, DP2,

I 17
916
t0 15
]t 14

12 rl

decoder driver for

oo oouu

''

l8

(range,

cro J

tt

k

dP2
dP3

Liquid Crystal Display

function,

DP3, VA are

polarity)

activated.

made suitable

CIIARACTER OECOOER

(LX)

or a LED dlsplay.

character outputs used for indication oJ

for a Liquid Cristal Display.

DRIVER

sI21A1

t_

t

t

r

L

t
t

(t

r

L

t
t

r

L

t

t

?

t
t

t

t

L.

['

45

la

-l

I

I

3.4.3.2-

5

Specification

RNG A

RNG B

RNG C

of in- and

Description

DATA

ONE SHOT

RANGE

RANGE B

RANGE C

POLARITY;

outputs of the OO 0055

HOLD

;

A;

;

On a change of state
connecting the output DH to OS
is created,
OO 0059 to
in

the

is used in combination

OS
change

Digital
Together with the function indication.
The range information determines the decimal
and the function indication

Signal
Signal

Logic Q

of signal

when

prevent

functions V-

of range information.

range information from

POL determines the
POL

is

= -

Polarity, Logic 1

range information

the

measuring until the

and

{m)A-.

generated

in the

with signal DH to create

(refer.

polarity

(0

RNG

a

1) signal DH

Z

via a RC'network

is

changed.

input amplifiers are

!

RC-time

the

OO 0059.

=

+

480

OO 0059.

to truth table

+

or

sign.

Polarity.

msec.

point

on

-

is

set.

a one shot

DH is used

stabilised

a one shot

page

46).

By

pulse

for the

pulse

DH

on

l

l

I

l

J

ta

l

I

_l

l

-t

1
8

10

1l

12

14

t5
to

17

18
19

20
22

23
24

FA
FB
FC
FD

DCL

Vss

DP3
DP2
DP1

(-8,5

FUNCTION A
FUNCTION B
FUNCTION C

FUNCTION D

D ISPLAY CLOCK

V)

SUPPLY;

VOLT/AN,4PERE;

ECII\4AL POINT

D
DECIIVIAL POINT
DECII\4AL

A.C.

SIGN

_

PO LA R ITY

+

POLAR ITY

I\4 EGA

KILO
t\i1tLl
oHtvl

GROUND

POINT

;

I

V

Digital function
Together with the range information
determines

This signal
display

Negative supply

The
V

Decrmal

3

;)

I

determined by the

2

)

1

I

AC information for the display

in

Polarity information for the display in the

oC

The

Ouantity information for the display.

The information is determined by the

function information

Supptyzero0V$

(Not

VA

signal together

or A indication

pornt

Pl\4

2517E.)

and

polarity

information from function select

iunction indication and the

makes the display information suitable

used in

signals are

Plvl

2517E).

voltage

informatron

-8,5

with the function selector determines the

on the display.

for

function-and

determined by signal

V.

the function

decimal

display. The

the

range

information.

in

functions V- and

the

range information and

information

point.

liquid crystal

for a

informarion is

A-.

functions V -..=-,

POL from the

A

OO 0059

lNot

--

the

used

-t

J

I

46

3.4.3.3. Truth table of the

Function

9

Blank

X
0 1000

0 1000

lpos.,

0 1000

0 1000
0 1000

0 1000

tneg.,

0 100

0 1000
0

0 0100

o

0 0100
0 0100 010
0 0100 Jll

oa

0055

oco<

X

zzz

XXX

<.ooo

O O

O

000
001
010
011

000
001

0 0't 0

011

0100 111

000
001

Outputs

o

E){CE..:z

X

000000

1

110000

1

010000

1

010000

1

010000

0

110000

0

010000

0

010000

0

010000

x

000100

x

000101

x

000101

x

000101

x

00011 0 0100

OFc\cY)

ooÖo

0000
0001

0'l
0010
0001

0001
0l00
0010
0001

0001
0100
0010
0001 000

00

000

100
100
100
100

010
010
010
010

000
000
000

000

Display
readrng

Blanking

+
+
+
+

-

-

999.9

9.999

99.99

999.9

999.9

9.999

mV

mV

-99.99

-999.9

999.9

9.999

99.99 kQ

999.9

9.999 t\4Q

V
V
V

V
V
V

fl

kQ

kQ

0
0 lt 00 001
0
0

0 1010 001 1

lpos.,

neg.,

I

0

0

I

+oa

Logic

Logic0
Logic X = irrelevant

-

For

-

For

-

For
In function
In function

0
0 00

Vv

1 = 0

=-8.5V

a liquid
a common
a common

crystal

the

,

|

V- and mA- the

cathode

anode LED display

1100
1100

1100

000

r

0

0

011

1011 011

1111

01'l

010 1xx

0

r

display, signal DS2

LED display

mV indication

011

0 1xx

0 l xx

is

a

signal

signal

DCL

is

suppressed

-indication

is

x

l't 0000 0001

x

010000 0100

x

0l0000

x

010000

101000 0010

'1

00't 000 0100

0010
000r

0010

001000 0100

0

00

001000 0100 001

X

110000 0001 1000

1

000000

I

000000

0

wave

square

Logic 1

is

a switch

by

used

Logic 0

in the

in

the

Pl\4

2517E.

DCL is

not

0010 00r

0001 100
0001 0

Pl\4

2517E.

00'l

001
001
001

100
100

010

0100 101'1 011

r

0

-

999.9

-

9.999

-

99.99

-

999.9

+

99.99 mA

+

9.999

-99.99

-9.999

i

999.9

-999.9

mV

V
V

V

A

mA

A

48

r-.

r,

3.4.4.

3.4.4.1.

Digital Control and

General

with the oo oo59

The OO 0059 consists

-

UP/DOWN

-

POLAR ITY detection circuit

-

E R + 12288

T|\4

-

RANGING counter

availabls.

-

UP/DOWN

-

LATCHES and

-

LEVEL

-

CONTROL
auto

.

Fig.33.

DETECTOR

ranging and data

DS

052

LÄEN
AUTO
RGXT

RNG
RNG 8
RNG
DOWN

TEST

(

8.5V

Autoranging

a ADc

of:

control

Number of

counter

1

C

A

to determine

for up/down

for counting

IMULTIPLEXERS

LOGIC

)

which

00

0a

cilcuit OO 0059

with delta

ranges: 6.

to determine

hold can be

59

modulation

whether incoming

ranging.

the result

generates

GNO
AO

23
22
21

ovR

19
18

DH
POL

17
16
15

OATA

l3

CLOCK

principle

From the ranging

for controlling

whether should

the signals; auto

given.

!t

be controlled.

can

data should

counter the

or

a LED

be ranged

polarity,

zero,

be counted

LX display

down in

up or

overload

or down

up

digital

the auto

and to

information

range

range

which

is

mode

the information;

r

r--

t_

L,

t,
t_
t

5,

t
t_

t,
t;

Fis.

(-8.5V

vss
GNo
TEST

34.

)

V

UP/ DOWN CONTROL
POLARITY OETECT.

RAN

ING

G

COUNTER

:loi

MU

:l0i

LTIPL

EX E

ir0i

R

t-

r
L

?

t
t

L
L

t

t_

L

L_

l

49

l

3.4-4.2.

Specifications

l

of inputs and

Description

outputs

l
l
l
l

l

lr

l
l
l
l

l

1

Digit Select

Digit Select

Latch Enable
(Not

used

Automatic

Range Extention

PlVl

in

Ranging

251 7

Digit Select Outputs

the outputs

of

One

Display,

Cristal

phase

inputs of

Pulse for Iatching the BCD

E

The LAEN

)

while DS1 and

Logic

The range

is ( 900 and

<

900

)

9999

Logic 0
Range switching can

With this signal the
This signal is used
function switch.

Logic 0 = the
Logic 1 = the range span

pulse

1 is automatic

information

) 9999.

=

down ranging

=

up ranging

no

automatic

(DS2)

is used for the

for the clock'input

the LX

is fed to a

DS2

are

ranges can

in the

range

drivers

ranging.

wi!l be changed

ranging

be effected

switch

HEF 4543.

information

of 4 decoder

1

changing.

(manual

be

function Q and

span consists

consists

IVlSD

of the

by the manual

extended.

of 6

lvl

ost

phase

OO 0055

LX

for a

to disable the decoder

when the

ranging)

is activated

4 ranges.

of

ranges.

Signi{icant

clock of

range

the Liquid
for the

and

display.

measuring

switches.

by the

Digit

result

I

lo

I
I
I
I

I
I

I

-l

6

7
8

10

IJ

Vss(-8,5V)

CLOCK

C

Range
Range B
Range A

l\4anual rangang

Up or down

Test input

Supply

Clock input

Range information

Manual range iniormation

0
0

I
,|

pin

Test
The testpin

Negativ€ supply voltage

Incoming clock

0

1

0

I

for lC testing

is connected to

frequency

no action
down rangrng
up ranging
not specified

during manufacturing.

-8.5

Vss

(-8.5

V)

from OO 0060

V.

(80

kHz

... 120

kHz)

14

15

to

DATA

AZ

Description

Data input

zero

Auto

lnverse of

auto

zero

Incoming

the

ADC.

of

anverted,

is

zero

Auto

V-l

the

convertor

data with

During

outputs

for automatic

duty-cycle

a

second

the

are used

depending

measuring

for commutating

zero

on the

period

compensation.

the DATA

input

the

input

voltage of

50

voltage

signal

11

20
21

23

POL

OVF

A2
A1
AO

Polarity

Hold

Data

Overrange

BCD information

state

The

Pl\4

LOGtC0=_potarity
LOGIC I

Logic 0 normal
Logic 1 the

will

lf

transfer of

The
measuring cycle

When a measuring
range

will

In case of overload

decimal

BCD coded

Bit
Together
digits in the correct

of signal

2517,

which

=+

be held.

DH becomes 1 the

measured

control logic wilt be

(in

manual or

become logic l. Signal

point

parallel-word

with the signals

PO L is determined

is measured

polarity

measuring.

present

result.

value

will be

result

automatic

only

is ignited.

serial.

order can be made

the

by

last completed

of the

measuring

data.

started.

cycle

waiting

is ) 9999

ranging

OVR

'l02

digit

DS1 and DS2

input

by the

ADC.

measuring

ended, there

will be

DH becomes

until

in the highest

mode)

is

supplied

also the corresponding

and

(digit

visible.

permisseable

then signal OV

to the display.

select) the

voltage of

cycle

is no

0, and a

correct

the

new

R

24

GND

GRouND

+

Supply Zero.

0 V ü

3.4.5.

3.4.5.1.

OO 0060 Switching

General

The Oe

a dutytYcle

It

capacitors.

0060 converts

depending

generates the clock

part

of the

the current

the input

on

for the digital

ADC

difference

voltage of

section

from the OO

ADC.

the

PN,4

of the

(V-l

0064

this clock-frequency

2517:

convertor)

digital output

to a

is determined

with

signal

by external

I

_

r;

_

r;

-

[,,

t',_-

[,.

t

(-8.5v

)

CLOCK

N,C

C clock

C comp

c"o

$

NC

vdd

+8.5V

cLocK &

5WITCHING

Vss

-8.5V

GND

NC

DATA
N.C

(r8.5v

N.C

NC

t_
t

)

53

3.4.5.2.

I

2

Specification

of inputs

and outputs

Description

Supply

Clock

(-8,5

output

V)

Negative supply

Clock

output

for Oo

voltag€.

0059

{80

kHz ...

120

kHz)

I

no connection

frequency.

clock

I

5

Capacitor

for clock

This

capacitor

determines

the

l

6

l

1

l
l
l

ö
I

10
't

GND

n.c.

n.c.

l+Al

n.c.

I

Capacitor
compensation

Ground

no connection

no connection

Current

no connection

for

input

Capacitor

Supply

Input from

compensates

zero.

ü

V-l convertor.

internal actlve

parts.

l
l
l

l

l.

J
I
I
I

12

IJ

14

l0

l6

t-al

vdd

n.c.

DATA

n.c,

Current

Supply

no

Data output

no connection

input

(+8,5

connectton

V)

jrom

Input

Positive

Outgoing
the

supply

ADC

V-l

convertor.

voltage

with a duty{ycle

data

depending

on

input

voltage

of

J
.l

.l

l

54

3.4.6. OO 0061 AC to DC convertol

3.4.6-l - General
The OO 0061 is an

integrated AC

convertor with two selectable

logarithmic-antilogarithmic calculating

DC

to

convertor

input ranges,

a current

RMS

and consists of

rectifier with an autozero

convertor.

three main

parts

viz: a voltage to current

compensation circuit and a

Rb

Rb

Ro

(-8sv)

AZ.

GNDV

Fis.36.

00

0061

Vin 2
So
5in

(.8

5v

OUT
Crms

PROT

vss

-

8.5V

)

Ro Rb

GNo

Vdd

+8.5

V

sT2486

I

55

I

3.4.6.2.

Specifications

of inputs and outputs

I

l

I

2

l

3

Description

Range b, conversion

resrstor

Voltage input I

Between inputs 1 and 2 the conversion
The resistor determines

is R308
Rb is selected dependent

Inpur ol the V to I convertor

and

R316

the basic current of the

in

Pl\4

the

2517

to the code

rn

the OO 0061.

of Sin and

resistor b is connected.

V'l

convertor

So.

Rb

l

Range a, conversion

l
l
l

5
6

7

Vss

AZc
^Zc

(-8,5

resistor

V)

SUPPLY

Auto Zero

Dccoupling capacitor

l

8

GND

GROUND

Between
The resistor determines the basic current

Ra is R307 in the
Ra

Negative

The auto zero decoupling capacitor

discharged.

capacitor
compensated

Supply

input 4

is selected

dependent to the code of Sin

supply

When

is zero. A DC offset causing a

so no influence is seen upon the

zero.

ü

16 the conversion

and

PlVl

2517

voltage

-8.5

no

DC offset

V

is

resistor a is connected.

of the V to I convertor.

and So.

is

C

alternatrng charged

present,

the voltage across the

voltage across C,

output signal.

and

is

l

I

PROT

PROTECTION

Protection input.

l
l
l
l
l.

l
I
I

.l

10

11

l5

Crms

I our

vdd

Sin

Vin 2

Ra

(+.8,5

v)

R lvlS

äveraging

capacitor

Current output

LY

SUPP

Range

input

Range

reference input

Voltage input 2

Range
resistor

;

selecting

selecting

a, conversion

Output current of the
The current
voltage of the unknown

Positive

By means of the Sin and So a selection can be

which determine the ioput sensitivity of the

Sin So

Note:

;

Input of the V to I convertor

Between

The resistor determines the basic current of the V to I convertor

Ra is
Ra is selected dependent to the code of Sin and So.

flowing

supptv

Ra Rb I Range

I

mentioned

above

inputs 4

R307

in the

Rlvls

through a

V.

8,5

l6

and

Plvl 2517.

convertor.

known resistor

inpLrt voltage.

1V.'r00v
10v,1000v

is valid for

table

in the OO 0061.

conversion resistor

the

AD/DC conv.

v

10.1
v

lr

PM

2517.

gives

made Ra or Rb,

RIVIS

the

a is connected.

I

.l

l

l

56

r_

3.4.7.

3.4.7.1.

OO 0063

General
The

The OO

a reference current
The

The current
digital
The

Programmable

OO 0063

reference

op-amp

can
consist

0063

current

multipliers

input code.

is independent

deliver

(-8.5v)

RNG B

V

C COMP

Fis.37.

Current

of three

source, two current

source

together

Cs

OUT

Source

programmable

5

parts:

main

adjusted

be

can

give

a multiplication

the current

of

Cs

CND

(+8

RNG
RNG C

sv

currents

to

and an

10

and

multipliers

part

)

A

1

range

in the

independent

!A'

range

is used

Vss GND

-85v '85v

1/100'

of

for compensation

'10

mA

operational

1l10'

vda

with

nA

10' 100

1

'

and

decade

amplifier'

dependent

protectlon'

-t

steps'

*-1

I

to the

-t

-l

v

-

r'

a

L-

-

L

t,

['

._t

a:

I

t-'

I

t,

I

L

(

t"

t'

L-

57

3.4.7.2.

Pin

2

3

Specification of the

nr. Name Desciption

1

lrs

Ref . current adjustment

Smooth ing Capacitor

trc

I ReI

Supply

5
6

7

8

9

10
l1

C clock
C clock

RNG

B

v

out

C comp.

Range

Output voltage

C. Compensation

+

-

inputs and

Common

(-8,5

B

Input

Input

outputs

V)

of the OA 0063

With Rs the output current can be adjusted.

Smoothing capacitor

Common connection of

Negative supply voltage

Capacitor

Range information

Output of the compensation ampiifrer.

Compensation capacrtor

+

and
Compensation:
the

Protection: With the
protection

for

the clock-oscillator

-

input

ADC is compensated during Omeasurements.

diodes

for the switched currents.

Rs

{-8,5

(see

12, 13).

of the compensation/protection

With

the amplifier the current consumption

amplifier also the

during O measurements is

Rp.

and

V)

for

the compensation amplifier.

amplifier.

of

leak current through the

compensated.

12 RNG

RNG A

't4

tc

to

17

18

vdd

GND

I

out

trp

C

Range

C

Range. A

(+8,5

pply

Su

GROUND

+

V)

1ko

ko
ko

1l\,10

supply

with

signal RNG B the signals determine the

lvleasuring

lmA

100

10

lgA

100 nA

voltage.

$

Together

range information from

Range

10

100

1O MQ

Positive

Supply zero.

OutPut current.

Smooth

With

ing

capacitor

Rp

the temperature'coefficient of the reference current is

determined.

the OO 0059.

current

/rA
irA

digital

RNG A RNG B

1

0

1

0

I

I
0
0

1

1

RNG

1

0
0
0
0

C

58

r

3.4.8.

3.4.8.1.

OO 0064 V-l

General
The

OO 0064

The

circuit

reference

Two External

convertor

contains

source.

(ADC)

is an integrated

input

a voltage

devices

to current

are needed

2L

23

22

2)

2a
l9
I8
17
r6

t5

r3

Voltage

So
Srn

GNDV

NC

5v)

N.C
NC

irei
Rs

(-8

5V)

to current

convertor

(FET,s).

co nvertor{

with

two

selectable input

A separate

input

(-8svX*85v)

CURRENT

SOURCE

I

ü

VOLTÄGE

ircu it intended

protection

Vss

Vdd

GNo

OUAL

TO

C URRENT

CONVERTOR

for

use in delta

ranges

provided.

is

and a

modulation

precision

ADc,s.

current

I

t_

[_l

t
t

t

t

5

t
t
t
t

Fis.38.

ST24 E9

ig

l1

T

Il

d
d

d

c

59

3.4.8.2.

'I

2

6
7
I

I

10

Specification of inputs

Description

PROT
n.c.
D1
Ra

JI

Rb

Rb

s2

Protection

no connection

Drain

Range

Source input

Range

Current

Current

Range

Source input

and

outputs

input

input for

a conversion

b

output

output

b conversion

device I

for device

conversion

for

device 2.

resistor

1

resistor

resistor

(input

(input

(input

sensitivity

sensitivity 1 V)

sensitivity

0.1 V)

1 V)

1l
12

't5

17
18

19
20
21
22

23

Ra

D2

| ,n

Rs

I

ref

Rp

n.c.

n.c.

vdd

n.c.

GND

Sin

Range

a conversion

Drain

input

tor device

Negative

Current input

Current setting

Current reference

Tc

no

no

Positive

no

Supply Zero

Range

supply voltage

resistor

setting resistor

connecuon

connectton

supply

volrage

connection

f

selecting

input

resistor

2

output

(+8,5

(a

or b)

(input

(-8,5

V)

V)

sensitivity

0.1 V)

Adiustment

p

R

determrnes

reference

current

temperature

coefficrent

So

Range

selecting

reference

input

60

4.

r

r

ACCESS

t

4.1.

4.2.

4.3.

GENERAL

The

opening
expose
The

instrument
during

lf

afterwards
carred
Bear

in

separated

DISMANTLTNG

-

Remove

-

Remove

-

The front

Note:

REPLACTNG

of

live parts

which

the

any

out

onry

mind

that

from

the

the

and

Take

care

suppry)

PM

2517.

PARTS

covers

shall

all voltage

batterv
two

is

or

removar

and

also

accessible

be

disconnected
instrument
adiustment

by

a

skiIed

capac;tors

sources.

pM

THE

the

that

used.

2517

cover

special

rear

cover

the

wiring

the

nuts

wire;

parts,

of

terminals

from

will

be

opened.

or repair

person

who

inside

the instrument

(Fisure

situated

can

be

to

the

can

be unsordered

except

may be

all voltage

of

the opened

is aware

39)

under

(item

pulled

battery

those

which

live.

sources

instrumenr

of the

danger

may

still

the

battery

compartment

from

cover

1 Fig.39)

the

access

before

uncter

invorved.

oe

charged,

from

does

battery

can

gained

be

any

adjustment,

vottage

even

if the

pl\4

the

not

2517

break.

When

compaftment

by hand,

replacement

is

inevitable,

jnstrument

now

pM

a

during

it

92lg

fepair

is rikery

or repair

shall be

has

been

(9

power

V

of

the

L

to

t
t

t

t

t
t
t

4.3.1.

4.3.1,1.

4.3.1.2.

4.3-2.

4.3,2.1.

4.3.2.2.

Stide

swirch

ON/STAND

Printed

Remove

ln

Note:

Topcover part

-

-

-

Function

Topcover part
Remove

springs

Printed

-

-

Note:

circuit

board

the

two

retaining

the

bottoffi

,All

when

switch

Remove
Remove

When

(item

circuit

p.c.

The

-

2 slide

-

8 springs

-

8 switch

Removethescrewsandnutsfromtheslidebodies(item3).Thebodiescanbeliftedfromthep.c.boardnow.

From
replaced

body

parts

of slide

a complete

again'

of

52

the

screening plate

the

locking

mounting

switch

S1

Sl

the

screening

2)

are accessible

boad

board part

bodies

contacts

function

all

parts

BY/OFF

part

of

the

swjtch

switch

switch

push

both

(Figure

spring

the

switch

(Figure

plate

part

Sl

of function

switch

should

52

rings

4l

situated

by

again,

41)

situated

and

(Figure

only

be

(Figure

52

from

the

contacts

52 are

in

has

to be

bodies

slightly

and

42)
inside

bending

take

inside

can

be replaced

4O)

switch

the

separate parts

ordered.

40)

sljde

bodies

are

situated.

stock

separatelv.

replaced

on

the

out

the

care

that

the

top

Sl

consists

(item

A

switch

parl5

all

p.c.

the

topcover

two lips

cover.

without

board

(item

the locking

The

anv

of:

are in

stock.

1 Fig.40).

contact

56prJ14

be

ordered.

and

stide

I Fig.

41)

spr|ng

rn

function

rroubte.

switch

When

The

slide

consists

not

the

of a

when

the retaining

fit

too

(item

complete

switch

spring

mounting

rings

tight

3)

and

switch

consists

(Fig.42)

and

oi

the

has

of

a

slider.

the

the

two teaf

to be

two

slide

prns

bodies.

agarn.

?

t
t

t
t

t­t
t
t'*

t­t
t-

l
l
l

4.3.3.

l

4.3.4-

l

Window

Remove

lifted

Battery

-

-

-

(Figure
the

out

springs

Remove
Unsolder
Pull the

two

the

of

the

the

battery

41)
selttapplng

toPcover

(Figure
screening

wires

springs

39)
plate

from

screws

now'

the

out

(item

which

battery

of the

4) which

is situated

springs

battery

compartment

are

in the

situated

bottom

inside the

cover

topcover'

The

window

can be

l

Note:onlythedoubtebatteryspringsareinstock.Asing|eonecanbeobtainedbycuttingthedoubleonein

pteces.

-

Unsolder

Remove
The

two

N2

unit

the

ln stock

the

displav

(Figure
wiring

pole

29

a

and

nuts

p.c.

board

40)
the

from

wiring

screws

can

display

strip

(item

lifted

be

unit

is available'

4) Jrom the
the bottom

trom

displaY

unit

p

board

c

I

J

4.3.5.

Display

l

Note:

l

l

Note:Whencomponentshav"tobeunso|c|eredfromthedisptayunitthenitisnotneccessarytoUnso|oer

wiring

l

4.3.6.

Shunt

l

'-

l

the

R 602

-

Unsolderthe
Unsolder

-

Solder

the

(Figure

input
shunt

the

sockets

40, item

socket

from the

the

on

5)

10A(X1)and O {X3)

replace

and

socket

p.c

board

agarn'

from the

a new

it by

bottom

shunt

p.c.

board together

with the

shunt

l

I

I

l
l

J

-l

I

-t

4.3.7.

(Figure

57

switch

10A

-

From
TheloAsw.tchIss|tuatedinsidetheloAsocket.Thel0Aswitchconsistsotacontactspringand
a switch

-

When

Note:

42.

Fis.

rear ot

the

block.

contact

the

-

When

-

when a banana

Switch

Test:

Insert

The decimal

CORRECT

43,

the bottom

sprinq

ntlng a

mou

on the

banana

a

1)

item

p

is removed

new switch

plug

is

10A

plug

point

inserted

range.

should

board

c

the

'

The display

in the

switch

contacl

the

switch

care

take

in the

socket.

104

to

INCORRECT

block

that

socket

10

the

soring

in the

con tact

the

the contact

should

position;

1OA

ot the

l0A socket

00'

be 00

1OA switch

can

switches

spring

of the

display

0

INCORRECT

can be'emoved

removed

be

also

pf

ope

opend

are

switch

000'

y

1
1

62

Fis.40.

Fis.

41.

Fig.43.

64

r-

[,

CHECKING AND ADJUSTING

L.

5.1.

GENERAL

The tolerances in this chapter correspond

instrument. These tolerances

For a complete re-adjustment
individual components, especially semi-conductors are replaced, the relevant section should

re'adjusted.

To calibrate
accuracy should be applied. lf such equipment is not available, comparative
another calibrated

measuring

The
Protect

With
should be used.
Non-screened measuring cables aot as serials so that the measuring instrument will measure
or

Before checking
are reacheable at
may
o.c.

the

all the

hum voltages.

also be

board. ln

measuring instrument only relerence voltages and measuring equipment

this

PM

arrangement should be such that the measurement cannot be aftected by external

circuit

against temperature

measurements

and adjusting

back of

the

necessary

case

this

may

deviate

o{ the

2517 . However, theoreticallV the tolerances

the cables should be kept as short as

remove

the bottom

replace

to

the toD'and bottom cover should be removed.

the adjusting resistors. which are reacheable at

to the factory data, which only apply

from

instrument the sequence in

variations

bottom

p.c.

board

mentioned in

those

(fans,

sun).

cover. For

N1.

In case of a complete adjusting of the

the

chapter should be adhered too. When

this

mav

possible;at

calibratinq the instrument the adiusting elements

Technical Data

be doubled

to a completely

(Chapter

with

measurements can be made with

in

extreme case.

the

hiqher frequencies co.axial leads

HF voltage values

tront of the bottom

the

re-adiusted

1).

be completele

required

the

influences.

instrument it

q

t
t

t.
t

t

r

L

F
I

t-

@

I

----tEt-­;l

I

/Afdt

o@fr

-@F

r

oE

to

t

-t-

40
rS

@

| \_/

{cscf;l-

r:=T1

{cdr.f+

l4

@

A
s.1,

e9l

a''l
I - tdr'i L

IE IEL.[ F
llz

@

e.

T

r

L

r

I

r-

q

t

t
t
t

[':-

L

Fig.44.

1---

L

I
L

I-

L

I

I
I

1

I

l
l
l

lr

5.2. Adjusting Table

ADJUSTM€NT

Grneral

Check

1

-

consumption

Current

current

Reterence

(OO

aoc

th€
Zero

Rängs 2 ol rhe

Rans 1 of the

5

Calibratron

9.999V:

Calibration

s9.99V--

Checks

Ranse 999.9V:

I

Linealitv

l0

Calibration

999.9 mV-

Calibration

tt

0064)

ADC

AOC

ADC

volt. rango!

Dc.

ränge

range

V: ranges

volt.ranqe3

Ac

range

ranqettl

Oc ourr€nt

range Adj. resistor R609

ADJUSTING

for

Adj. resistor R107
{lvlR25,

Trimm€r C108

resistor R1 14, coarr€

Adi.
(MR25,

Potenriometer R 106; lin€
Adj. Resistor 81 I 2

(MR25,

resistor R203;

Adi.

([rR25,
Potentiomete. R204; fino

resistors

Adj.

(l\4R25,
Potentiometer

Note:gg2::!U:g:!!

-deviation>

cut

-

devietion > | 60 digits

cut away

-

deviatton>
cut awav

Adi. resittor 831

{[4R25,
Potentrometer R31 2;

{[4F25,

ELEMENT

1%. E48 series)

1%, E48 series)

1 96, E48 series)

coarre

1%,

re'ies]

E48

R208

R206,

1%, E48 series)coars€

R207, fin€-

80di7iß

< 160

digiß

affiy R2o6

178

<

digits

nm8

| 78 digits

8206 and R208

1; coer36

1%, E48 series)

l%. E48 series)

fine

PREPAßATIONS

Instrument swrtched on

4xl.5V batteries

Power;

ln!truhent swilched on
Power; + 3.6V

lnstrument set

posrtion; V *,AUTO

in
lnstrument set

position;

in
lnstrument set

posirion;

in

lnstrument set

in

oosition;

lnstrument set

position;

in

posirion,

in

position;

in

position;

in

Range 9.999V

position;

in

lnstrument s€t
{m}A:
to l0A and 0 socket

;

Pl\4

,10A:

(9V)

9248

V:.AUTO

-,AUTO

V

ä,AUTO

V

V*,AuTO

V:,AUTO

V:

V--,

V-,AUTO

,AUTO

suppl;ed

INPUT SIGNALS

socket

Vf,l and O

+

0.9V 1 0.001%
R108 rjghrside

to

socket

0
+

0.09V

Rl0S,rightside and 0 socket

+

9V 1 0.001%

Vf,, and 0 sockel

to

+

90V 1 0.001%

to Vf,2 and O socket

+

900V 1 0.0017o supplied

ro VOand 0
a.+9 V10.0019/.

b.+0.9
c.+0.09V10.00170
supplied

0.9V 60
supplied to VO and 0

9A-- ! 02%
Supplied

-2-

supplied

and

1

supplied to

0,001%

supplaed

supplied

socker

v10.001'/0

to VCI and 0 socket

H2.0.01Y"

10A and 0 socket

to

sockel

ADJUSTING DATA

+

8.5V

< 120 mA

Voltaqe drop

opposite

<

0.5V
opposrle

< 0.5V
+

!

1 20

0.0170

,t/A

00.00mVtldigit

I diqir

900.0mVt2digh

+9.000V11digir

1

I daqit

90.00V

+900.0Vi6digits

a.+9.000V!2digits
b.+0.999V!2disjs
c.+0.090V!2digits

12

mV

9.000 A

disits

t

30 digits Display

900.0

+

8.5V

8.5V

MEASURING

(+)

C802

(-)

C804

(+l

C802

(-)

C804

A102/14

D;splay

Oisplay

Display

Display

Display

Dieolav

POINTS

and 0 socket

s@ket

and 0

and 0 socker

socket

and 0

(000064)

and C802

65

(-8.5Vi

l

I

I
l
,l

,|

l
l

oo

L

r_

ADJUSTMENT

Calib.ation

99.99 mA:

Rsiltsnca

l4

Refor€nco
of

OO 0063

Cohp€nsation
amplifier ol

oo 0063

18

Check!

Ranq6

Rang6

Range

Range

TampaElu.a

17

ooc calibration

l8

Chsk temp ranges
+

I oooc

-

sooc

rangr

currsnt

r6sistanco

9.999 MO

9.999 ki-l

99.99 kO

99ir.9 kO

aangar

rans!

rang65

ADJUSTING

Adi. resistor
(MR25,

Adi. resistor
(MR25.'l%,848

Polentiomotor
Potenliohol€r

Potentiometcr

R605

l%, E48 seriei)

R4'l 1, 6.rt.

ELEMENT

oriesl

R403; tin.
R407

R502

PFEPARATIONS

Instrument set in

Inatrumont sot in

kfl999.9fl

Inrlrument

kO, Rang€

Instrument

ktrl, R.nse

Instrument

kO, Rangr

In,lrum6nl s6t in

kf,l, Range 99.99 kO
lnstrum€nt

kO, Ran9.999.9 kQ

Instrument

-

60... + 2000c

Inirument set an

-

60... + 2oooc

Instrument $t in

-

60...+ 2oooc

rcsition;

position

p6ition

in

3ot

9,999

p.ition

in

*t

9.999 M.fl
poaition

in

s€t

9.999
p6ition

position

5et ih

po3ition

in

s€t

rcsition

po,ition

MO

INPUT SIGNALS

mA# t

90
Supplisd

to VmA and 0 sockel

0,2%

ADJUSTING

+

90.00

OATA MEASURING POINTS

mA I 30 disits

f_

Display

t_

900Q10.01%

Supplied ro VOand 0 sak6t

9 Mslr

0.01%
to VS-l

Supplisd

..3MO i 0.01%

ktr,

b.9kslr0.0r%

c.90kf21 0.01%

d.

900

Supplisd to Vf,!and 0 rek6t

35.34tr ! 0.1%

4e.eeQi o.r%

27.8/.dl! 0.1%
Note: lhc

r

kQ

0.01%

aisance should bal

conneted to

|

.nd 3 of the

2

5
3 Frcnt view

and 0 5@k6t

poiD6

Nobe

I

1 disit

900.0

9.000Mtrt5disirs

a. 3.000 l\,lo t 20 digic

k'f2i

b.9.OO0

c.go.m ktrl120disis

d.900.0 kC21 50 digits

t0oo.oocttdigir

b€veen + 099.8 änd

|
I

-Oso.ooct2digits

|

|

inpu

20

disiß

t

t
t
t

Display

+

Display

Di!play

t

t
t

Ac cur?anl rrngat

19

Calibrätion ralrgE

99.99 mA-

Potentiometor R304

Inrtrum€nl
(m)A-

positaon

in

ret

IADJUSTING

ITEM

R 107
Rt12
81 14
R203

.R311

R41

1
R605
R609

9O.68mV 60
Supplied to RO07, righbidr
.nd

the 0 s@k6t

90.83 mV

RESISTORS

VALUE

9k53 - 16k2
9k53. 12k4

95k, l24k

20k5 . 205k

-

42k2

24k9
68k1 - 562k

806 - rk96

r87 - 14k7

Hz

Olvl 01

SER I ES

[4R
E

48

t

1715

25, t%

0.01%

onwar

SERIES

90.00 t 5 diqits Display

t
t
t
t

t

t
t

I

t
t
t_-
t

r

I

67

I

FAULT

I

I

General

Service

l
l
l
l
l
l

Faull.f inding

FINDING

hints

lf servicing
damaging

-

Take care to avoid short'circuits
especially

-

Use

-

Use an acid-free solder.

-

When fault-finding, dismantle

-

As

measuring

-

After

ln this chapter a
From this

has to be carried out the

the instrument.

near

miniature

the

dismantled

or

repair

the instrument should be calibrated again.

procedure

general procedure

input

the

soldering

instrument is not very

replacing

genera,

fault-finding table is

terminals

iron

parts.

the incorrect

stable

given

parts

points

can be

should be

unsolder

the battery wires and

it is

advised

to locate the incorrect section in the

found

following

with measuring clips and hooks

when high-voltages are

(35

W max.) with a tin cleaner

the instrument,

taken into account

if

instrument is

present.

or a vacuum soldering iron.

by using

the

loosen the display

to use a work

the

detailed

in

lixing

fault-finding tables.

order to avoid

switched-on,

board

clamp,

inslrument.

when

l

Nole: The fault-iinding

component cannot tle found

procedure

is meant as an aid

in

every case.

for

fault-finding.

This means that the

incorrect

l

Measuring instruments

.

l

I

I

l

Note: This faultJinding

l.nstrument

m

co
In this case also

pone

-

-

-

-

nt s.

used:

9V external

Analog multimeter PM2503 unless otherwise stated

Oscilloscope PN4323'1 or P1v13232
Digital multimeter Pl\4 2524

lower

with

refer

power

procedure

serial

to the survey of

supply

is based on

numbers

P1v19218

modifications

instruments from

have

can

deviations,

given

serial

in Chapter 7.3.

number Dl\401 1715 onwards.

especially in diflerent

values

of

I

I

I

I

)

I
I

,t
.J

,l

2*'""

6,3:älä

t-19,45.

68

L

L

L

in

Error

POWER
SUPPLY

6.2. DISPLAY No LED

ADC

63

----ATTE.

64 V

NUATOF

65. RA NGING No manua ranging

66. Vfu RANGES
(R

MS

6.7.A RANGES
(Cu(ent

6.8. A- FANGES
(Shunts)

(Shunts)

.C

610

6.11

6.13DATA HOLD Dala ho d does not funclion

RANGES

(Temp.

bradge)

uNoe

I

STAND BY
(40

sec

)

prob

li

ems with lhe nslrumenl check

power

suppiy

rs ghted

Oniy lndicatron LED s are lighted

-

(+.

MAN. t!4a, mva)

,

LED [4AN
One 7
Two 7

One 7 segmenl LED

One seqment

Drsp ay conslänt 0000
D sp ay conslant 0 loverrange)
Disp ay will not become

No

Unslable d
ADC nol in€ar

Dlsplay cannol be adtusted lo zero

Range

(Adl

Range 100V:

adlusted

V: ranqes nol lrnear

No

IncorreCi rangrnq
Osc lating belween lwo Vtu ranges

Display consianl 0000

Display

VQ/O sho.lcrrcurl-ad
Adlustment
rnqorrecr measureo varue

DLsplay constant 0000
Range
Range l0 MQ cannot

Devral on
10Ä,1e range noi linear

Dispiay conslant 0000

Range

D sp ay constant 0000 n range 100mA:

Ranqe 100mA

ursp ay constanl 0000

Range

Disp ay constant

'C

Incorrect f unctionning

Stand by lime is too long
Stand by time is loo

is nol
segment LED
segmenl LED

adjuslmeni

rsplay

1V: and

4.

3.

5)

(Adt.

rangrng

aulo

will nol

cannol be made

1000 A cannot

rn

10A:.-cannot be adjusled

100mAa cannol be adjusted

range cannot

rro rs

E

I rst

lighled

ghled

is
s are b anked

,s

ncofrect

of

a LED

of d sp

and

no

the

*- cannot be adjusled

0000

ay

10V:

1000V:

6 7)

(decrmal

become zero.

be adlusied

be adjusted

measered

n range

0000

be adjusted

short

ghl

very br

rs

ncorrect

poss

e

b

cannot be adJUsled

cannot be

po

nl Inconecl)

no l0)

{Adt

(Adl.

no.

no.

no.

(Adj.no.

no. 17)

14)

15)

12)

19)

(Adj.

value

10A:

{Adl.

(Adj.

Refef

to

6.1.1

62.1.

62.2.
623
624

6.25
626
6 2.7

6.2 8

1

6.3
6 3.2.
633
634
635
636
637

4.1.

6
642

643.

645.

652

6.5 3

4

6.5

6 6.2

6.6.3.
6 6.4.

6.7.2

6.7.3.

6.7.4

6.7.5.

6.8.r.

6.8.2

6.8.3.

6.8.4

6.9.1.

6.9.2 Current supp led to

1

6.10

6.r02

6.11.1runction

6.12.1

6.12.2

6.13.l Use

lnstrument

sellngs

nput vo

No
aulorang ng

No Inpur

Auto

Inpul vollage direclly
supplred
ADC
0 ! 90mv.:900nrv

Hi : 8108 r

nput

Manual ranqrng

Funct on V:- V- or kt
Inpuli
ManualiAuto rangrng

Inp! t voltaqe

lo va/O
Manual ranqrnq

Resrstance su
to vaio
Manual rang ng

Cunent s upp ied to
Va/o and l0A/0

Va/o

Funclron'C
Inpuli Probe or res
(Adj.

Inpuli D ode

va/0

STAND

Pt!49263 or inlerconnecl
probe

5 and 0 socket

lag-a

voltage

rangrng

to npu t oi

qhl

vorlage

not

mportant

10A/0

and

no.

r7)

I

betwe€n

(40

BY

data hold

inpul sockel

VAr0

s upplred

Pll

sec)

probe

ü

side

ed

slor

pornt

Comments

if balleries are

Check

if 9V EXT

Check

!f the display

Check

lf adtustments 4 and 5
(Chapter
ranlle 1
errof
The ADC s used

then the error

Rang

The AC/DC convertor s also used

The current source 000063

is also
'C

Comb ned snunt A:-. Atu

Combrned shunt A: , Atu

cornbLned

Comb

"c

I

error

ogrc

and

and

is

ng

and

ned

t

52 )

and 2 o(

kely n lhe ADC

y

rs

on

parl

,s

used

n the functions

used

'C

tu.

cu.rent source Q.

(2ka

empty

power

supply

cannol be macle

ADC lhen

n V: luntion

rs k-oly rn lhe

s burll

n a i functrons

ano

rn the

{

the

conlroi

range

ranse)

L
L

t
t

t

q

t

L

t

t

t
t

tt

t

T
E
I

t

t

r
r

1

:l

I

l

6.1.1. No

No. From

or incorrect

power

Measurement N4easuring

6.1. POWER SUPPLY

points

Measuring data Correct

69

tncorrect

+ an

-

low

y

-

Hi = C804
Hi=c802

Lo= o-socket

Hi=c804
Hi=

c802

Wilh oscilloscope

Hi - c804
H = C802
Lo = o'sockel

Hi=

Coll

Lo = o-socket +

Wrlh

oscllloscope

Vary the

voltage belween

6 and

9V

Hi = C804
Lo = o-sockel

oscilloscope

Wilh

Hi=C804

Wiih oscilloscope

Vary ihe batlery
voltage belween
6 and

9V

+

+

V802

battery

ext.

ü

,

ext.

.

,

(+
(_)

(+)
(-)

(+
(-)

(+

(+)

+8V.... +9V

)

-8V.... rgv

< 10mv Reler to c Feler lo E

)

>+9V <+8V
>-9V <-8V

Changing

Normal al 9V exl

6V batt
=160kHz

When
lhe trequency
change

50 Hz

)

80....100kHz

4Hz

100

Changlng ol
Normal at 9V exl or
6V

=160kHz
When varying V batl.

ot frequency

varying Vball.

Hz

batt

n n

-fttr

-

of

should

lrequency

*9v

"-gv

Power supply okay Eoth

V850

delecl

-9V

power

n

Delect
Delect n control

refer

clock,
Delect
reler to
Oelecl
control,

Delect V850

to 6.5.

rn

AZ signal

6.5.

in

display

refer to

supply

6.5.

1ncofiecl,

Reter lo

B-

Reler to H

> Reter to

V801 detect
or R802 lo small

(560k4)

Reter to

D

G

voltage

l

Supply
(across

C804, C802)

l

Ripple on the supply
voltage

+ and

l

c. B

l

D, c Convertor frequency

l

Too high
suppry

(Supply
> +9V, >-gV)

or loo

vorlage

voltage

l
l

B Ripple

l

on supp

voltage >10mV

l

+ 8V,

frequeflcy

voltage

<-8V

c Converlor

(Supply

<

l
l
l
J
l

l

j

l

I

l

G. Voiiage

+ V sripply not

-

V SUPPJY

over R803/804

present

=Vball

R803 or R804

Hi=

c804

Hi=c802

=

Lo

O.socket

should change

R803:165mV
R804=265mV: ! 25%

(+
(-)

+

)

+ V supply

-

V

suPPlY

--

nol

:Vbatt

a 25%

presenl

Converlor
running.
Check; R802
and

s nol

T801

v802

Too

small:
Check; R801, V852,
V801 or

Trackinte(uption
Too lar96:

Lnstrument.

ihe
e.g. One LED

lights

10

r,

[,

6.2.1. No LED
No.

From l\y'easurement

6.2-2. Only indication LED's
No.

From Measurement

B Blank

6.2.3. Indication

Lighted

Supply vollage

voitage

Srrpply

rsp

d

ay Hi= D70l/4

LED IVIAN is not liohted

Measurement

lvleasuring

Hi = C804
Hr=

C802

lighted

are

Measuring

Hi = c804

=

Hr

C802

lvleasuring

Display

6.2. DISPLAY

points

(+

)

(-)

,

-,

(+,

MAN, MO, mva)

points

(+

)

(-

)

points

Measu ring

+8V .

-8V -9V

Measu

+8V.. +9V
,8V -9V

c 1 = drsp

Log
Logrc

0

l\y'easuring

n manual ranqrnq

data Correct

+9V

ring

data Correct Incorrect

ay

=

blank d isp

(-8

data Incorrecl

(0V)

5v)

Check
suppry
Refe( to 6.1.1.

Refer to

B Check

Check D701 Check d sp ay

ay

supp
Feiert to

LED s are supp ed
lrom the

No

rqnreo

-

Be{er io

Incorrect

power.

power

v

6.1

batter es

MAN

LED

V supply s

6.1

r

t

r

L

L

r

L-

1

t

?

i

t
t

1

t

6.2.4. One 7.
No. From

B

c B

D C Data

E D Vollaqe

segmenl is lighted very bright

Su

C ocksrgna OQ0060

Su
oo0060

(o00060.

i\,,leasurement N4easuring

pply

vollage

(4101)

pply

vollage

(4101)

srqnal OO0059

(D

101)

over C101

Ar 01)

()1

Hi=c804 (+)

=

Hr

C802

=

Hi

A101r2
Wilh oscrlloscope

H:4101/13
Hr=4101/1
Lo = 0.socket

Hl= D101/14

a. Open

(V

and 0)

b. Short crc!it in

(V

and 0)

Wllh oscilloscope

Hi = a101/4

=

l.r i

At01/5

points

+

nput

(-

pul

lVeasu ring data

+8V +9V

)

8V

-9V

nnnn0

80kHz . . 120kHz

+8V

8V .

wrlh
clock

-8V

-9V

Input

gna

s

1=0V

varyrng

nal

srg

,/:

000060

x

(+)
(

)

a. B ock srqnal

b Block srgnai
Logic0=-85V,

Logrc

5 6V: De{ect O00060

Correct tncorrect

Befe.

lo I Check

Refert to 6l l

Reief

Reler

to D

Reter to

E

No

Too
1200mVl

Detecl

power.

to C

siqna

small sig

O00059

t
t

t

t
t

na I

t
t

r

t
t

r

I

11

l
l

B Diqit Selecl OS

o00059

l
l
l

G Clock

(D101)

G Supp

oo0059

(D101)

OO0059

y

voltage

(Dr0r)

1i2

H1= D101i I
Hi= D101/2

With osc loscope

Hr = D101/13

Wilh oscilloscope

H = D10t/12

{DSl)
(DS2)

(_

)

-l T'1 l-1 T

J LJ U LJ

=500H2

J

-0

l-J L

=25AHz

120k Hz

80

-8V...9V

0

-85V

asv

-

8.5V

Feier to I

Heler 1o H

Deiecl OO0059

Reier lo G

No srgna
Träckinterruption

Ar01/2. Dr01/13

l
l

lf

l

j

l

Supply voily voltage
oQ0059
(D

r

01)

Supp y vollage

\o702)

6.2.5.

Two 7. segment

LED'S are

lo. From lvleasurement

B

6.2.6.

No.

B

Drgit Select

o00059(D10r)

Drgit Select
HEF 4555

One 7. segment

From

Mgasurement

V

bais o1 lhe cathode
swrlches ol the LED
concernrnq

Oulputs of HEF

tD7A2)

DS

DS1/2

(DS702)

LED is btanked

1/2

4555

Hi=D101/12(-)

Hr= D702i8

blanked

l\y'easuring

=

H

0101i

Hi= D101/2

W lh oscilloscopc

Hi=

070212

Hi= D702l3

Wilh oscL oscope

i/easuring

Hr=

s

bars V701/7021703

ot V7O4

Wrth oscilloscope

=D742t4t516

Hi

Wilh oscilloscope

(DS1)

1

(DS2)

(DS1)
(DS2)

points

points

at 7

-8V... -9V

-8V -9V

lMeasuring

-FFF.o

LJ lJ

J

=500H2

t-t r-t f

-250H2

fll-Lflf'u

=500H2

f-LJ-l_['-usu

-.25OHz

lvleasuring

BIock signar.:3Vp.p
Drv

sron of the sigoals
DSl and
Reler

lo

B ock

srgnal.
Divrsion
DSl and
Fefer lo Fig.25

data

Ll U

o

1uuu

data

0S2

Fig.25

=8vpp

ot slgnals

DS2

-s5y

85V

Delecl OQ0059

Delecl

D702

Correct

Reier ro

Defect

Delect transistor
v70117021703

R715171617lf
R718

Track inte(upl

I Deiect O00059

D702

Correct Incorrect

Reler to

or V7A4

Deiect D702

ot

on

Incorrect

B

6.2.7.

io. rom

B

c

6.2.8.

One

One

segment

of all LED'S is incorrect

l\y'easurement

LED segment

LED segmeni

outpur

oi HEF 4511

(D701)

segmenl

ol one LED

lvleasuring

Drsplay

Display

Coresponding oulput
la/g)

Hi=o701i9..15

W lh oscilloscope

points

is missing

l\.4easuring

Conslant
Conslanl mi5s ng

Elocksrgna 8Vp.p.
Drvision ol signals

40.41, 42. A3
Refer

lo Frg.25

data

lrghting

Correct Incorrect

0elect D701
Reler lo

C

res

Defecl
R703i 709

Track nterruption

stor

Deiect D701

12

6.3-

ADC

I
I

6.3.1.

Display

No. From

I

c

B Dala ho

D

c Data hold

E

D Dala hold

conslant

l,4easurement

InPul

signal

drrectly

Data
(D

101)

(Dr01)

(D703)

(D

101)

supp

to ADc

srgna OO0059

d DH

oo0059

DH

OO0055

DH

OO0059

0OOO

red

lMeasuring

Display
Input

voltage;

b i 90mV
c. r 900fiV

Suppliecl toi ADC

Hi= R108

nqhl hand

Rangei

a.b.

999 9mV

c. I99gv

=

Hi

D10l/14

=

Lo

0 socket

With

oscrlloscope

Inpul

pp

su

=

t-t

D101i 18

=

Hr

D703/1

Connect

-8.5V

to

vollagei

ied to

ADC

Dr01/18

(C802

+

points

srde

+ 90'nV

-

Measuring

a. 10000 mV
b.

t 90.00 mV

c

a 9.000 V

a. AsSymelfical

vo raqe

b.

Symelfica block
vo

rage

No s g

c

Logc0(-85V)

Loqic 0l-

Instrurnenl

a

aqa

)

b

Elror still n

data

block

nal

I5V) Reler

I u nc

n

lrons

Correct

a. Refer to

Track Interruptron

a.

n

DH

b

Delecl OO0059

C

lo E

line

Incorrect

Reler

to B

Fefer to

D

Deiect O00055

rn

lrne

DH

L.

t
t
t

L

?

L

?

t
t

r

L

G

H

L

I

B Track

J

C Autozero

(D

r

01)

AUIO ZETo AZ
v1o2/vr

02

Convers on resistors

Ra

and Fb

000064

A10l/15

D 101/14
lnpur

of ADc

Swilchrng

(ar0r)

000060

Data outpul

(4r01)

Source voltage
FEr

v

fi2t1o21

AZ

OQ0059

on FET

I

ol

(A102)

part

000060

200m

Hi=

0101/15 AZ

Hl=

0101i 16 AZ

Wrlh

osc oscope

= qate

H

W lh oscrlloscope

InPut vollage;
lo ADC

+ 900mV. refer

a.414214t11
b.4102i9/6

vt0l/v101

supplred

+ 90mV and

to A

az

AZLJ

az

l-l_l

a 90 mV n range

99.99mV

b.900mV rn.ange

9

999V

:10k4

b

j-l-J

200m sec

sec
o-

|

G or

0

e.sv

85V

B

Reler lo

Deleci

Defecl

(4101)

G

O00059

OQ0060

Deiecr

OO0059

Check R504
Ctreck tracks

rET

vtorttor

Delecl resLSlors

l

t
t

T

t

t

lo

(C804

Hi = 4101/15

Wilh oscilloscope
Load Al01/15

The multimeter

a ranqe

oi

Hi = Al02/5 (Vt
Hi = ar02/io (vto21)
Lo

-

4101/15

-

Hi

Al0li12

Lo = + 8.5V

+

(PM2503)

=

o.sockel

D10t/14

)

wrlh

should

02)

ü

rcurl

Shortc

-

or

-26V.

Both
shou d

The measurements
wiih

the data

+0.4V... +3V

Eolh slgnals

to

8.5V supply

-3.2V

.

srgnals

be equal

rnultimeter

lhe

slgna

sholr

Shortclrc!]rl

t

Defecl

OQ0060

t

Defect

OO0060

t

t*

Defect

ld

000064

Delecl

O0006a

-V

soLrrce : Vdrarn

Delect V

102/1021

t
t'

r

I

I

(Overrang€)

6.3.2.

I

Dlsplay constant

From Measurement

No.

0

Measuring

points

Measuring data Correct

tncorrecl

73

4555

(OVR)

(0702)

(OVB)

(OVR)

I

a

B Overranqe

Overrange

hEF

Oveffange
oQ0059

oo0059
1D10r)

c B

6.3.3. Display will nol

Data

signal 000060

(ar

01)

become

No. From Vleasurement l\4easuring

lret OQ0064
(4102)

Check adluslmenlsi
.

Reference

ADC
.

Range
(adt.

(adJ.

2 ol ADC

no.4)

current

no.2)

=D7O211

Hi

Shortcircuil

Hi= D10r/19
Shorrcircuit

Hi=

Shortcircuit
Hi = 4101/15

Shoncircuit ADC inpul

ADC input

aDC in

Dl01/19

ADC npu t

,

,

r

Inpu i ADC;
Hi = R108

zero with

righl

hand side

I

shorcircuiled ADC

points

:4102i

Hi

Short clrcuil ADC

Rr07

R106

Short crrcuit / DC

14

Loqrc0(-85V)

Losc0(-85V)

put

Loqic0(-85V)

cLock 4101/2 80..120kH2

DATA 4101/15 T,xclock

J-l_-l_-L

symmelncal

input

lVeasu ring data Correct

input

Rl07 adiusl
9k53... 16k2

Poteniiometer 2k2

Inpl]l

R105 = 10k2

ng

resrslor

Delecl HEF 4555
\o742)

Track n1702) Refer lo I

Reler lo B

ro

Reler

Delect O00059

tncorrecl

Reler to B

OQ0064

Delect

C

c lref

D C lnput of ADC

6.3.4. No

000064

(4r02)

Swrtchrng
oo0060A(10r)

adjustment

No. From Measu

lret OQ0064
(A102)

Check
Fr05. R106, Rr07
and R]13

c

D

Adjuslrnent Range 1
ol ADC

CRange selecting input

l(Sin)

000064

l(a102)

Pa(

ol instrument

rement

(adj.

no.5)

H = Al02/14

Wilh oscilloscope
Shori crcuit ADC

,

H = A10r/10
H = 4101/12

lnput ADCi
Hi = F108

nghl hand

possible,

N4easuring

Hi = A1A2l14

I

s de

stable

points

Osc ations

inpu

t

^,^w.V.

display, input vollage supplied lo

ring

Measu

+ lz0pA

R107,

|

inpul

Rl05 = 10k2
R106 = 2k2

=

AdJusting

R107

9k53.

8113 = 1k4

R112 = Adjustrng

9k53...12k4

R1r2

F110i

(-8.5v)

Log c 0

Shorl circuil ADC

Rr05. Rr06,

R113

Check Fl10. R112 R110 = 1k05

=

Hi

4102/23

Check capaclor
c]10

>lomv Defect O00060 Check:

ADC

data Correct

F Feier to B

polenirometer

r6k2

-1kA)

Reler to C, O E,

Detecl 000064

Reier to D

Reier to G

Refer to D

C103. R104

Inlerruplron

Track

lncorrect

Check O00059

rangrnq

counrer

E Adjuslmenl Range 2

Ol ADC

(adi.

no.4)

Check

R111, Bl l4

8111:10k5
R114 = adjusting

95k. .124k

=10k

R111//F114

=

14

E Range

lSin)O00064
(Ar

02)

se eclrnq np!

t

Hi = At

02/23

LogrcO(-85V)

Reler

lo G

Check OO0059
rang ng

counler

r

I

t.

I

G

D Adluslmenls

1 and
(adi

G

H

H

6.3.5. Ditference

I

6.3.6.

Unslabledisplay

NO.

From

B

C B ref

D

c ref

E

0

gnal

S
(AZ)

V10l

Srgna Auto

Oa0059

lAZ)

Dra n V10l/V1011

tr tne u'tference rs

Measurement

Inpul

ol ADC
sw lch ng
{a r 01)

Check

06

cr

O00064

(Ar

02)

O00064

tAr02)
Check R105. R106

R107,

Rr r3

Fange

2 ol ADC

no.5

and 4)

Aulo

Zero

Zero

at + and

>2 disrrs delect

part

000060

C104

C105.

Display :45mV

= gates

Hi

H = D10l/1

ts

measLrre

n r

Shorl c rcLrl

H

-

display in lunction

N4easuring

Hi = ar01/12

c r04

-

Hi

Wrth

F105, R106
R107. R113

V1O1/V1011

=

d.arn V10l/V

wrlh

Q-meter

ranqe

[44

=

Bl08

A102/ l4

osc oscope

(PM2503)

ADC,norl

ADO

qhl

r

hand

000064 or V101

poin

c105. ct 06

l0l

instead

ol 900nrv
(= t,x

supplied voltage)

Square wave

I

200 msec

Square wave

I

L----.J _85V

, -o a7

I I

.-0

5M!2

tluctual

ng

-

V

ts lvleas u n

26V

Both

na

srq

=

C l05

390pf

=

C 106

390pi

Oscr 1at

ons

120!A

+

=

R105

t0k2

R106 = 2k2

ol 90mV

l0

t_J

l0

l erv-

200msec

ng

-32V
s should

potenliometer

85V

aZ

data

Track nterruption
vr01iD10l

Correct

Reler

lo C

chec k c110

Defecl

(4n7)

OO0064

Delect

O0006a

Delect

O00059

Deiecl

O00059

Constart
c
Conslanl 1[,t!,?

vt1lrrvl0l'

'1nIQ

R10A R109

Deiecl

Rep are caprc

Fefer to

0i Short

rc! LI

V10l

Check

ln c o rrect

O00060

D

lracks

rV

rors

r

I

t

I

t

t

!,

t

01

t

l

t
t

I

t

I

t

l

t

I

t

Pl

d

G

6.3.7.
No.

D

ADC

From

oo0060
(4r01)

Check

C101 and

not linear

Ny'easurernent

Replace

V102

lracks

=

H

4101i2

c10l

lVeasuring

Display
Inpul

vollage;

+

30mV supplred

ADC

=

Hr

R108 fighl hand

Sei€cl; Range

points

10

999.9mV

9k53

80kHz . . 100kHz

=

101

C

lnF-

lvleasuring

On d isp

300 OmV

IIADC rs

ay

str

data

nol

16k2

0

-85V

Inea.

Delecl

Deiecl

Defect

O00060

O00060

Correct

000064

Feier

to c

Replace to

tncorrecl

Fefer to B

Delecl 000060

Cl01

tl

TI

c

*

d

c

rt

I

75

I

6.4.1.

Display

cannot be adjusted

I

From

No.

I

l

c

Measurement

Check I lhe

Check
Dispiay Display

p.c

board Open

Cl08 Open

l
l

D c

Djspiay Disp ay

l
l
l

6.4.2. Range 1V

No. From Measurement Me 3su

:-==

cannot be adjusted

l

l\4easuring

Open
Range
lnsuiate se ectors witch
pa(
prece
malerial.
lhe
(Refer

Cut
ro A102i 1
The track
the
Fange 999 9mV:::
Open

Disp ay Fefer to Adt

6.4. V: ATTENUATOR

lo zero

points

npu

i

nput

nput

9mV:

999

V: 1/2 wrth a

of rnsulalrng

shilted undef

ng

slrd

conlacl

ro Fig.

lrack from R204

conductorside

Inpu t

ring

(000064)

is

situaled al

(adj.

points

)

Measuring data Correct

C108 = 5p5
Display i 000.0mV Deiect V201

DLsp ay :000.0mV Oelect O00064

no.

3, 4, 5.)

l/easu ring data Correct

lr

mrner Reler lo C

no

3.4.5 Check;
R204 = 47k
Trackinterruptrons

pot

meler

tncorrecl

Replace

rei€r to O

V102.

0elecl

rep

ace

tncorrecl

C108

V10l

l

=10nF

C201
C202 = 33nF

l

=

4M2 | lnle'.

R201

R202=4M2 f ruption

I
t

shorl
clrcu I

l
l
l
l
l
I
I
J

I

a Instrument

6.4.3. Range
No. From

a

c B

D

E

lov

l\4easurement l'/easuring

Rang€ deviatos
with a laclor ol 100

Check: R205, R206
R207

Checki
Track nterruptions
Se ector switch

R on v201
Range 10V

c

Gale voilage V201
Range

o s the decimal

on

slays

tl

-_--

and l00V

R208

and

(cl€anl)

-:

10V:

pornl

Drsplay

===

cannol be adjusted

points

R205. R206, R207

R208

and

Hi = V201 drain
Lo = V201 source
9-meter

= gate

Hi

in Check rangrng

V201 OV Defecl

reler to Adt. no.3,4.5 Ch€cki

(adj.

no.

6,

Measuring data Correct

R205 = 9k09
R206 = 1M

R207 = 100apol. meter

R208 = 820k

<60Q Track interruPtron

R2O1
R2A2
F108=1M
R109=lM

7)

Refer to B

Refer to C

­=

4M2

4M2

V201

tnco

Repa r

Eeler lo

Reler to

counler

rrecl

D

E

OO0059

.l

I

76

r_.

r

Range

d6viätes

Check;

F205, R206

R207

and R208

B

c

Check;
(crean

B R

Range

Se eclor

l)

on V20l

100V

switch

R205.

F206,

and R208

Hi = V201
Q-meler

F207

drain

R205
R206
R207=
R208

<600

=
=

=

9k09

820k

1M
100Q

pol

meter

Reler to B

Reler lo

C

Delect v20i

[_,

i

t

r

L

6.4.4. V:.-

No.

From

B

C

B

6.5.1.
No.

B

No manual

From

ranges

not

linear

Measurement

Check linearity
ADC. Reler

Lrnearrly

Gale ol V201

Measurement

Auto rangrRg
(AUT)OO005S

anode

to

ol V::

ranging

srg nal

(D101)

voltage

V150

of

6.2 7

Measu ring

range

D splay
Selecr:
Ins

u ate
pa(
prece

mater
the

s rdinq

=

Hr

Selecl: Ranoe

999.9 m v =

Ny'easuring points

Hi=

0101/4

=

Hi

V150

points

999 9mV

seleclor swrlch

V:- l/2

i201

with
or rnsuralrng
al,

shrlled

contact

gate.

|

anode

Measu

ring

Check rf the
range

a

under

Logic

lrnear

s

0

{,8.5v)

6.5. RANGING

lvleasuflng

Loqic 0 (-

Log

8.5v) Reter to

(-8.5V)

c

0

V:-

data

data

Correct

Reler

to B

Reler

to C

Delect V20l

Correct

E

lncorrecl

Defect

or Reier

FAN G ING

Incorrect

Reier to

Fefer to

0064

to

I

C

6 5

t

t

c

t

t
t
t
t

t

c B

D

E

Kalhode

c

Anode voltage

Siqnal UP/DOWN
o00059

E

Srgnal
o00059

voltage

(D101)

RNG A

(D101)

Vt

V150

50 Hi

Hr

Connecl
V150 vra
res
0'sockel

Hr= Dl01/9
Hl=

Hi=
Lo
Se ect fanges

V::

=

Vl50

=

V]50

stor

lo the

Dl01i 10

0101/8

=

O-socket

wilh MAN

kalhode

anode

lhe

kathode

a t00ka

DOWN

UP

+

in lunclion

switch

Logic

Loqic0(

o1

Depress
D101/10=
Release
D101/10 =
Depress
D10l/9
Release
D101/9:

Logic
Logrc 1

Loqc0orl
Range

100v

r000v

lV

10v

(-

0

8.5V)

85V)

swilch

Logic l

switch LiP

Logic 0

swrtch

=

Logic 1

switch

Logrc

-8.5V

0=

=

0V

Log

c

0
0

l

1

UP

OOWN

DOWN

0

Fe{er

lo

D

Chec I R722

Reler

to F,

ADC

cannol

adjusled
Reler

ro

6.4.2.

Check
switch ALjTO

Trachs

c Track

be

Defect

Check
UP

DOWN

Delect O00059

V150

Inlerrupt

swrlches

?

t
t

on

t.

r:
rl

['

f'

77

6.5.2. No auto

NO. From

B Ranging

6.5.3.

Incorrect ranging

ranging

Measurement

il manual

Check
ranging iunctions

(decimal point

No. From lVeasurement

Signals RNG A, RNG B,
RNG

C

if

Check
are correct on OO0055
and OQ0059

these signals

(D101)

B Signals FA, FB, FC, FD,

(0703)

oQ0055

c a

poinls

decimaL

poinls

points

o c

B

No

decimal
Check signals DP1,
DP2, DP3 0Q0055
(D703)

Oecimal
on

LED s

lvleasuring

Display

=

Hi

4102/1

=

Lo

O-socket

Select; Range lV:

points

+

manual
Supply; 100V: to
Va and 0

incorrect)

Measu ring

Hi = D101i8- D703/3
Hi : D101i 7 0703/4
hi=D]01i6-D703/5
Lo = o.sockel

Selecl;

Hi = D7O3t7 FA
Hi: D7O3/8 FB
Hi = D703/9 FC
Hi = D703/10 FD

=

Hi

D703/16 DPl

=

Ht

D703/15 DP2

Hi=

0703i
Lo = o-socket
Selecl; Function V:

Hi = v758/9
Hi = v756i I
Hi = V757l9

points

ü

Fu nctron V:
Manual rangrng

14

DP3

ü

Manual rangrng

Measu ring data Correct

Reter lo tfuth table

oo0055

+2V...

Range

1000v 0

Logic 0=
Logic
Beier

oo0055

Function FO FC FB FA
Vr0011
V: 0 0 0
a0010

'c
mA-- 0

mA-0111

104_-

104-1111

Logic 0=

Logic

Refer
oQ0055

Range

1000v

Logic 0=

Reier to lrulh table ol
oo0055

Fange V758/9 V756/9

1000v 1 0 0

+3V Defecl OO0059

ring data Correct

Measu

c

1V 0 0 0

10v001

100v010

-8.5V

=

1

0V

to

lable

lrulh

to11o

1V 1

10v001

100v010

1=0V

lo

truth

0

1 1

-8.5V

table

DP3

1

-8.5V

DP2 DPl

1V 1 0 0

10v001

100v010

B

r 1

ot

r
I

oi

0

0 0

Refer to B

a

1

0 0

l

0

1

0

0

V757l9

Reter lo B

Reler lo C
Defecl sw lch

Deiecl OO0055

Reler lo O Delect

Incorrecl

Refer to
No manual rangrng

>3V delect OQ0064

interruplron

6.5.1.

lncorrect

Track lnterluplron

OQ0055

Trackrnterruption

LED

Delect

Logic0=-8.5V

1=0V

Logic

78

t

6.5.4.

No.

I

c

D c

Oscillating

From

B Signal

Measurement

Signa
(D

101)

Check

(D703)

Fange

between

DH

OO0059

Rl18. C109

DH OQ0055

ng

sw,rch

two Vtu ranges

l\y'easuring

Hi= D10r/18

Switch from
lo

anolher V& rang€

wrth the manual

push

butions

F]18

Cr 09

Ht= D703/1

lrom

Swilch
to

anolher vtu range

!! lh the rnanual range

Drsplay
Swrtch ranges wllh
manua

rang-a

points

one Vtu

range

one V-

the

Measuring

o

l-----l

.J t-

-

8.5V

Pl]lse

ot 200rnsec

Fr18=2[,42
Cl09 = 220nF

oJ-----L

-

8.5V

200rnsec

Check f lhe

po

ni is

chanqing

dec

data

mal

Correct

Chapter 6.l3

DATA HOLD

Reler

lo C

FrrT

Checl

Delect

and tracks Reler

O00055 Reier

lncorrect

Reler

lo

10

1o

ma po

Dec

I

D

6.5.3.
nl

t

t
t
t
t
t
t

ot

t

6.6.1. Display

No. From

B

c B

B

D

c

E

D

constant

Measurement

Inpu t

Signal Vinl
(4301)

No

:1000 siqna

Check track
R315, V3011V302

Gale vollage

s

gna

srgnal

0000

ot 000061

V301/V302

6.6.

V- RANGES

lvleasuring

c301/R301

Selscl; Range tV-

Äranua rang

:0

Supply;

Hi = 430113

Select; Ranqe

Supply::0.5Vtu (VO

Supply: 900mV, l kHz
ro 430'3

Hi = 4301i

Sellings;

R3r0

v30ri

= gale

Hr

Selecl; Funct

lvlanual

5V!(Va.O)

Manual ranging

3

refer

v302

V301/V302

ranqing

points

V-

O)

io

B

on V-

(ATTN

Measuring

lslhereasgnal

ng

:0.5V:10

D splay?

:0.5V:1000

Range

tv

10v

100v

1000v

Loqic 0=

AC/DC

+

LOgrc

0
0
l
l

-8.5V

data

CONV,)

Correct Incorrect

Relef lo B

0rsplay
0elect A30l
Track

shortcrrcLr t

Reler

lo D

Refer

to E

Defecl V30l

No slgnal
Check C301,
Selector

Feier to

-

-

No drsPlay
Deiecl F301/R302

No

srq

:1000

switch

C

nal

srgnal

t
t

t
t
t

ot

t

t

E

I

t

t

E

Signal RNG I or

F314

H = R3l4 right

Select; Funclion V

Manual ranging

See E

tu

Reier to

G

t

E

79

G Check

H Signai RNG B on Dl01 Hi= D101/7

B Signal Vin2 000061

R314 and lracks

(4301)

Signal lout
(4301)

Fes stors Ra

(A30r)

o00061

00006l

and Fb

Select; Funclion V­Manual rangrng

Hi = a30r/15

S6lecl; Ränge 1V­Manual

Hl = 4301/11

Select;
Manual ranginq

R307
R308, R3l6 = Rb

Q meter

L Signal AZc

(4301)

6.6.2. Display will nol

No. From

B

C

I Check R306

D

I Diode rneasuremenl

E

D Resislors Ra

E

Measurement

Ripple on
oi 000061

Siqnals V
000061

Trackinterrupl

between AZc
of

000061

000061

SrgnaL lout
(4301)

000061

become zero with

power

supply

(A301)

n1

and Vin2

(A301)

and R309

on

Inputs

(A301)

and Rb

(A301)

000061

ot 15!F in
c30314301/6/7)

Ny'easuring

Fl : a30r/12l5

Selecl;
AUT ranging
Shortcrrcuil Valo

With

oscrlloscope

Hi = 4301/3
Hi=4301/15

S€lect; Funclion V­AUT ranging

Shodcircuit VQ/o

R306, R309

Hi = 4301i

=

4301/7

Lo
Selecl; Function
AUT ranging

Shortcircuil VQ/0
R307

F308, R316 = Rb
Selecl; Function V­AUT renging

Shorlcircuit

H = 4301/11
Inslrumenl

meter

Q

See E

0V-

ranging

Range

1V-

=

Ra

paralell

=3ka
=30k4

Display correct again

lo

when measuflng

VQ/O short circuited

points

+85V

Funclion

(Vrnl)

(Vin2)

6

=

Ra

Va/o

swrtched oll

V-,

V!

Measu ring

<5mV

< 1C, nV

Both

F306 = 200k
R309 = 237k

=0.6V

:

3ka

:30k4

:10k
=7k5

fitted

(Vru

dala

should

signals

when Fl31l
when R311 is

lunction)

be

is

Delecl

V301i V302

Reter to
Fanging errors

Dei€cl V302

Conlrol oi V302

Defecl R313
Se eclor sw lch
Tracks

Defect C303
Tracks

o rrect

C

Reler

lo I

vo

No

De{ect
F308 or R316

Deiect 4301

lnc o

POWER

6.1

(o

Relef

D Refer

Delecl 4301 Repair

Relef lo E

Defect A301

Defet C303

Track

Check; R3l0/F311

6.5

lage

R307

rrec

t

SUPPLY

lo C

shorl circuit

and R312

Tracks

6.6.3. Adjustmenls

No. From

a

lVeasurement

Signal Vinl
(4301)

Drain V301

cannot

OQ0061

be

made

(Adj.

no. l0)

Measu ring

Hi = A301/3

Funclion

S€lecl;
AUT ranging

gvtu

Supply;
Measured

Hi=

Instrument

Measured wllh

wilh PM2524

v301 drain

seltings;

points

V-

io

Va/o

PM2524

N4easuring

685mvtu . . .699mvtu Refer

0,20lo lower as value
measureo

data Correct

Refer

under A

tncorrect

lo E Refer 10

to D Reter lo

a Vo lage

b Volläge
lower as rneasured

I

C

=:ovr

:5006

=

80

t_

I

c B

B

b. Voltage:50% lower

measuted

as

D I Check R301,

E S

G

6.6.4. Incorrecl measured

No.

From l,4easurement

a Fange 10Vtu

C B Range

D

E c Resistors Rb

R306

gnal

(4301)

E Fesislors

o00061

Check R310. R313.

lracks

Range
Range

wrlh a faclor oi

Range lovtu dev

wrlh a iaclor ol 10)

mol

tactor
Signai Sin O00061

(4301)

Slgnal

oo00s9

(4301)

nder

u

R302.

Srn 000061

Ra and Rb

(a301)

R311,

at

Toovtudev ates

10Vtu, dev

10

RNG A

B3t2

va lue

l0Vrdeviares

deviates

l0

ates

ation

(0101)

O00061

= gale

l-11
Inslrumenl seltings;
Measured with Plvl2524

Hi = Gate V302

A

Instrumenl

t\,1easu red wilh PM2524

R30r, R307. R306

H = 4301i r3
Select; Range 1V-

R308. R316 = Rb
Select; Fanqe

R3r0, R3r3

l\4easuring

Hi

Sel6ct; Bange 10V-

Hi=
Lo = O.socket
Select; Ranqe

R308. R316 = Rb

=

4301/13

0101/8

v301,

seltings;

1V-

points

,

ü

10V-

(-

Loqic 0

Loqic0(-85V)

R30l
R302 = 887k

R306 = 200k

Logic0(-85V) Track

3k01 :0 I %
30k a 01%

F310= 10k5
F313=

Measuring

Log cr

Logic r

30k1 a 0.19"

=

(0v)

8.5V)

909k

48k7

data Correct Incorrect

(0V)

Deiecl V301
Track

Delecl V302

Delecl OQ006l

Feler to G

Defect O0006l

Refer to B

Reler lo G

Rel€. to C

Relef to E Reier to

V-

swrlch

Deiecl OO006l

shorlc

(7

rcuit

8)

0V.

0v,

Repa r

6.5. Rang ng

Refer to 6
RANG NG

Refer

lo 6.6.1

sho(crrcurl

D

5

t_
t_

t
t
t
t

ö

t
t
t

t
t
t

B Resrstors Rb

G

G Gate voltage

G Signa FNG

J G

(4301)

.Range

100V& deviates

with a lactor

-Range

I00vtu deviales

nol

wilh a faclor

(D101)

vollage

Drain

000061

ol 100

ol V301 Hi

B OO0059

V301 Hi

R308.

ot 100 a

= gate

Select; Range 100V-

Hi= D10l/7

Sel6cl; Range l00V-

=

Select; Range 100V'

R316 = Rb

V301

drarn V301

30h1 I 0.1"" to

(0V)

,

,

Logrc 1

Loglc r

<50mVtu

(0V)

Check R3l4
Track

Check R305, R315 Deiect V301

6 6.3

Fefer 1l] H

Repa r

Reler lo
RA NGIN

100

6.5.

G

?

t
t
t_

t

l_--

t'

t

q

t

6.7.

81

A RANGES

1

I

J

voltage

lrx

000063

R401,

to V/a

OQ0063

cannot

000063

nt

0000

O0006:

lrack

inpul

be adiusted

Lo = o'sockel

R4r3

Hi= 4401i 16
Lo = o-socket
S6lecl; Function kQ

AUTO ranging

R401

Hi = 4401/3

=o'sockel

Lo

Selocl: Function kQ

AIJTO

ranging

R402, R404

(Adj.

lVeasu ring

Hr = 4401i

Sel6cl: Function kA

3

Range

points

O

|

I

r

V

j4)

no.

points

10004

Measuring

data

+6v Reie. to

R413=

3k3

R401 = 100a PTC

R402 = l2l
R404 = 16k

k

9

Measuring

Check t cu(enl

be adtusted

data

can

0elect 000063
(4401)

Refer

Check swrlches

Refer to

Detect

Deiecl

Reler

Correct Incorrect

C Reler to

Reparr

lo D Refer

G

O00063 Repa r

O00063

Correct lncorrecl

lo C Reler lo

B

lo E

B

6.7.1. Display consta

No. From Measurement tuleasuring

I

B Check R4l3

c Cuffent

D

E

G E I Check track

6.7.2.

No. From

Supply
(4401)

Power supply tracks

(4401)

c

Check
4401/16

c

Currenl lrc
(440r)

E

Check R402, R404

Range 1000Q

Measurement

Curfent lrc

14401)

B

c

D c

6.7.3.
No.

B

c B

D

Check F402, F404,
R403 and lracks

Current lrx
(440r

Vollage on lry Inpul
000063

Range

From

1oMQ cannot

Measuremenl

Vout
(4401)

Vollaqe

R407

check

c vollage

ol FI4l4, R415

000063

)

(a401)

000063

on slrder

R406, R407,

on connection

R402.

R404, R403 F402

Select; Funcl on kQ

Range r000a

=

Hr

4402/16
Lo = o-sockel ü
S6lect; Function

Shortcircuit

be ad,usted

Measuring

8i = a40ri

=o.socket

Lo
Select; Fanqe
1KQ

connected to

(lull

VQ/o

Hi = R407

Select; Range

lKQ

connected

(full

VQ/O

R4ot R406,

R407, R408

:

Hr

Conneclron
R415

Lo=o-sockel

Sel6cl; Range 1k9,

1kQ connected to

(lull

Va/o

,

Range 1000Q

(Adj.

kA

VQ and

no. 1S)

points

8

ü

1kQ.

scale)

slider contacl

tka

to

scale)

R414

ü

scale)

=

121k
R403 = 10k
8404 = 16k9

0

Measuring

-2V

Can be adjusted wrth

R407

voltage measured

%

=

F406

2k87

R407 = 1004

=

F1408

2k87

+0.9

pot.meler

Oelect 000063

Reler to

Detect

data

Refer

pot

meier

+1V Reter

Refer io

D Detect

O00063

O00063 Check R401

Correct

lo E

D

lo E Delecl V451

lncorrect

delecl O00063

Reler to

Feler lo C

I

8Y164

82.

r

t

E

G

6.7.4.

Deviation

No. From

B

c

D

C Fange Iniormalion

-

0

Vin

OQ0063

(4401)

Voltage

on

of

R412, F450

oo0063/r0

Vo lage

on connect

R414, R415

in the

connection

measured

l\y'easurement

Clock

siqna 000063

(4401)

Dev atron

B Range Inforrnal

RNG

A, RNG

A, RNG

B NNG

8.

oo0063

RNG

oo0059

and

on

RNG

=0-s661s1

Lo

S€lect; Range

lkQ

connected to

Va/0

Hi = 4104/10
Lo = Conneclion

v450
selecl; Range
1kQ connected
VQ/o

on

=

Ht

Connection R414,

=0

Lo
S€lecl; Range

I

ks} connected to

Vai

0

value

N4easuring

Hi = 4401/5

=o.socket

Lo
Select; kQ lu nctron
Wrth osc oscope

Display

=

H

Aa01/13. RNG

HI:

C

C

A4O]/7

Hi = 4401/r2,

=

Lo

O-sockel
Selecl; Funclion
MAN rangrng

Hi = D]01/8
H1 = D]01/7
Hi= Dl01/6

Selecl; Function
MAN rang

(trl

(luil

sockel

(lu

I scale)

$

sca

sca e)

+

points

+

RNG B

.

RNG C

ü

RNG A
RNG
RNG C

ng

1ka.

e)

1kQ,

to

1ka,

ka

B

ka

7r of voltage meäs!red

nder

u

B

R4i2,

+0.9V

Measuring

3kl-lz 4kl-12

Note:

n rnstrumenls

ser atnumoet

DM
Dt\,1

clock

Sma I dev ätron

A

RNG

IK

t0k

100k

1000k

t0M

Loqrc

0=

=

Logrc 1

FNG

tk 1

rok000

100k001

1000k

10M100

=

Loqrc 0
rosrcl=ovü

. +tV

data

:400mV

601

0l

up lo

0r r 715 the

qnal

s

1

I

0

0

0

0

0

l

1

0

-8.5V

0V

+

C B A

1 1

0 1

-

8.5V

Deiecl O00063

Defect

Checli R405

Reter

s

Reier

Delect

Delect O00063

1

;

0

0

Dei€cl R401,

0

Check R405

000063 Reler

Co r rect

1l] I

lo

C

OO0063

R416,

O00063 or

trac hs

Checki R414
:

v451,4Y164

Feier

Reler

Refer lo
RANGING

and tracks

to

G

F415.

+ 0.5Vi Defect

Incorrect

to C

to D

6.5.

l__

t_

I

r

t_

t

r

L

d

r

t

r
L

r
L

t
t

t

o

L

t_r

t
t

6.7.5.

NO_

10Ma range

From

l\y'easurement

10ka

not

range

linear

l\4easuring

Dispiay
Sel6cl: Range 10ka

Supply; lka lo VAio

por

n ts

Ny'easuring

10001\2

data

Correct

ln c orrec t

Feief 10

6.3

7 ADC

t

t­t'
t.

r

I

83

I
I
I
I
I
I

l
1
l

6.8.1.

6.8.2.

6.8.3.

Display

From

No.

Range

No. From

a

Display conslanl

Check

constanl 0000

Measurement

Check switch
(m)A

15/16 and

-

R603, R604, R607,

:

10A

l'y'easurement

Check shunt

so oerlnq

Check

R607,

luse F1

cannol

R1

and

spors

R603, R604. R606

R608. R610

zero in

(315

6.8. A ;'- RANGES

range 104

in

lvleasuring

R603, R604.8607.
R608 and swilch

(m)A:

R608

be adiusted

range 100m4

mA) and the wiring

15/16

lvleasuring

R1

R604, R606,

F603.

R608, R610

F607.

points

(Adi.

no. 12)

points

ring data Correct

Measu

R603 = 1,64
8604 = 2494
R507 = 40kO

=

1kA

R608

lvleasuring

=

I

R603

8a

R604 = 2494

=

13k3

R606
R607 = 40k2
R608 = 1ka
R610 = 205k

lracks

Check

data Correct

Refer 10 B

lracks

Check

rrecl

tnc o

lncorrect

l
l
l
l
J
.l
l
l
l
J

6.8.4.

6.9.1. Display constant

Range 100mA

From l\y'easurement

No.

Check

B Check

No. From Measurement

c

R607. F608, R610

Check

100m4

Vin I ol 000061
(4301)

C,ieck R303.

==_

R603

F604, F606,

0000

ranges

-

R304 R303,

cannot

l\y'easuring

R603

R604, R606, R607
R608. R610

l\y'easuring

(Adj.

be adjusted

points

no. 19)

6.9. A.., RANGES

points

=

430113

Hi

Fange 100m4-

S€lect;
Supply;90.83
to conneclron
R606 i R607 and
0-sockel

mV

60Hz

pornl

ol

lhe

\?

R304 R303 = 560k

Measuring data

I

110%

8a

R604 = 2494
R606 = 13k3
8607=40k2
R608 = 1k
R6r0=

205k

Measuring

90.83mv

R304 = 4M7

data Correct

pol.

meter

Correct

Reler to B

Check tracks

Reler to B

Reler to C

Reler to 6.6
V- RANGES

tncorrecl

tncorrecr

Reier to 6.8
A: RANGES

Check C60l
(nr)A-

I 1/12

l

.t

l

I

6.9.2.
No.

Range.loomAtu

From

Measurement N,'leasu

Check R610. R306.

R303

and

cannot

R304

be adjusled

ring

8610. F306, R303,

and R304

(Adj.

points

no. 19)

[/easuring

R303 = 560k
R304 = 4M7
R306 = 200k
F610=205k

pol

data Co

meter

Delect C601

rrect

tncorrecl

84

r

6:10.1.

6.10.2.

Display

Check lhe

.C

range

l\y'easurement

Check

Check
R503,

constant

cannot

the

R501,

R504

00OO

1ke range

be adjusted

1ka range

R502,

and

R505

6.10.

Ny'easuring pojnts

Nleasuring points

hr = 4401/12

=0

Lo

sockei

ü

'C.ange

Selecl;

'C

RANGE

Ny'easuring

l\y'easuring

R501 =

215a
R502 =
R503 =

R504 =
R505

100a

1

909a

=

604a

pot.

96a

data

data

meter

Reler

lo

A RANGES

Check

Refer
A RANGES

6.7

sw lch

to

6 7.

r

t_

r

I

T3/4

t
t

t

6.11.1.

6.12.1.
No.

From

I

c

D

E

lncorrect

Siqnai
oQ0063

Stand

Signal
(D10r)

Blank

B

Collector

v706

c

Check R719,

c

Elank
HEF

lunctionning

RNG

C of

(a401)

by time

N4easurement

is

DSl

ot OO0059

and on R721

oi transrtol

R720

(BL)

signai

(D701)

451I

too

of

long

o.tr.

Measuflng pornts

Lo=0sockel

l\4easuring points

=

Hr

D10l/1

Hi= R721,

=

Lo

o.socket

With osc

Supply

(ogic

V751

__EEF

C

Col eclor

R719,

R720

=

Lo

o-sockel

+

6.12.

tefl

hand

ü

loscope

8.5V

lo lhe

0)

C706

+

STAN

A

t

N4easu

D BY

lMeas

=500H2

't

side

n nnr0

-

Disp

Logrc 0

8719=68k
R72a =

Logrc0(-8.5V)

nnruce

ring

data

(40

sec.)

u ring

data

- -

-

-85v

ay shouid

a2k

(-8.5V)

b

ank

Check

Relef

Defecl

Reier

Delect

Delecl

swrlch

Correct

to

B

v705

to

E

V706

D701

D13/14

A RANGES

Incorrect

Track

Inlerrupl

Befer

lo

Reler

10

t
t

t-

L

t-

L

t
t

on

C

t
t
t

D

r

t
t

r

I

85

I

1

,'

6.12-2-

Stand bv

lime is

too short

No. From Measurement lMeasuring

lime

I

l^-

6.13.1. Data hold
No.

On

B

Ease lransistor V706

c Check F719,

does

From

l\y'easurement

Signal

0H OQ0059

(o10r

)

R720

not function

Display

H = V706

=

Lo

O-5e61s1

Oepress; Push

R719, F720

Measuring

Hi=

0101/18

=

Lo

O-sockel

hold

Data
(nlerconnecl poinl

probe

lhe
0-sockel

points

base

$

butlon

DISPLAY

6.13.

por

+

fu nctron

npul

and lhe

)

ö

nts

5

ot

i,4easuring

=>0

I

bul too shorl

OV

R719=68kO

=

F720

82kA

DATA

HOLD

lMeasu ring

(0V)

Loq c 1

data

data

Correct

Befer to

B

Check R72l

C701

Eefer

to

C

De{ect V706

lfacks

Correct

Defect

OQ0059

(33M)
(680nF)

or

Incorrecl

Deiect

V705

lncorrect

Check Rl16.

Rl17

86

7. PARTS LIST

7.1. MECHANICAL

Description

Ordering

number

Qtv.

r_

I
L

t

Item

TOPCOVER

Knob for
Lock spring S2
Knob
Leaf spring S 1

BOTTEI\1

Battery spring double
Special nut 1,43x6
Stand-up bracket

Rubber foot

BATTE

R ubber

INPUT BLOCK

Sh
Sp

Fuseholder X4
Power input X6

PR

INTED CIRCUIT BOARD

Display board N2
Power

Body
Segment
Spring.

R ing

Function switch

Body
Segment
Sp ring

10
Switch block

Contact
Switch up/down/aut/displ

Switch
Switch knob

Input socker 0/VSr10 A, X 1/X3
Shunt
Soldering
Contact strip 29
Transformer
Test
Test

Fuse

power

for

function switch S1

COVER

R Y

COVER

{oot

utter

r ing

switch 52

A Switch 57

spring

R'l

pin

T801

pin

red

pin

black

mA FAST

315

switch 52

(comp

(without

(complete)

S1

(situated

1 mm

pole

ete

SAND

with screening)

feet)

in 10

A socket)

53/36

FILLED

447 94558

5322

459

5322
5322
5322
5322
5322

5322
5322
5322
5322
5322

5322
5322 462 44148

5322
5322 443 64025
5322 492 64614
5322 256 40011
4422 265 20051

5322 216 94208

5322 274 54001
5322 492 64628
5322
4822

5322 405 94155
5322
5322

5322
5322 492

5322 276 14338
5322

5322 26A 24109
5322 405 94r65
5322 290 34004
5322 265 54041
5322 144 14011
5322 264 24013
5322 264 24014
5322 253

24094

414

64098
492 64675
414

64099
492 64616

447

94492
492 64612

10514

505
405

94164
462 44148

443

64026

466

94555

492

54291
53010122

492

64628

492

54291

405

94163

64673

414

26305

24009

20

l
1
I
I
l

2

'I

2

?
4

5
6

46
46
46
46
46

t_
t
t

I

3
2

1

2

I

2

,l
1

1
I
1

1
8

I
10
11

11
12

13

t5

16

47
47
47

47
48

48
48
48
48

t

oI

t
t
t

1l

49

t

2
2
2
2

18

20
21

49
49
49
49

t
t

2
8
B

4
4

3

1

1
1
1
1
1

22

19

20

23
24

25
26

27
2a

29

30

49
49
49

49
49

49
49

49

49

49

49
49

tt

t

t
t

I

I

t
t

87

I

o

Fig.46.

Fis.47.

Fig.48.

Fis.49.

88

7.2. €LECTR ICAL

i:

7,2.1.

Resistors

Item

R104
R1O5

Hi{Js
R106
Rl08
R109

R110
R11'1

Rl'f

3

R116

R117

R118
Rf 19
R120
R121
R201

R2O2
R204
R2O5
R206
R207

R2O8
R3O1
R302
R303
R304

R305
R306
R307
R3O8
R309

R310
R312
R313
R314
R3l5

R316
R401
R4O2
R403
R404

R405

R406

R407

t14ul

R408
R409

R41O

R412

R4l3
R414
R415

H4l5

R416
R417

Ordering number

4822

11O

63045 4,7

5322 116

5322 116 55266

4822 1OO 1OO29

5322 11654188

5322 116541aa

5322 116
5322 11650731
5322 11650749
4822

4822 11130333
4822

4822
4822

4822

5322 111
5322 1 11

4A22

5322
4A22 11130333
4a22

4822

5322 11655211
5322 116

5322 11130261
5322 101 14099

5322116 54228

5322 11654A92

5322 116
5322 116 54191
5322 11654732

5322

4822
5322

4822 11130302

5322 116 50954

4822 110

4822
5322 11654072

4822
5322 116

4822'l1O
5322 116
4822

4özz
5322 116
4822

4a22
4822

4A22 11130263
4822
4822

4822
4a22 111

4822

55266 1O,2k

54552

11063134

|10 631S6
11063134
11130304

11O

63078
34161 4,42

34167
1OO 1OO79
116 54615

1O0 1OO75
110

63185

55265

54218

116

54619

1OO 1OO2g

116

54696

63067

116 40006

100 10035

54833

63205
55219

1oo 1oo7s

lUQ lUO/5

55279

11O 42214

110

30302

1lO

63129

111 30313
111

111

30313

30313

3O3O2

111

30302

("/.

Tol.

1O,2k

2.2k
1 M
1 U

1,05k

10,5 k

1,4 k

10 k

1

M

2,2

10 k

150 k

82

M

4,42 M

47 k 20

9,Og k

1 l\,1

100

a2O k
909 k
887 k
560 k

4,1 M

1,78 k

2OO

237

22O k

lOO
121

k

3,01 k

30,1 k

k

10

k 1

2,2 k

100 k

38,3 k 1
33

k
10 k
16,9

k

4,7 M

20 0.05 W Trimming

jO

lvl

10

20

10

20

20

20

20

tO

2,97 k

too 20 0 os w rrimmind n6rm [-

100

2,Bi k

10 tvl

220

k

6,8 k

k

3,3

k

5,62

5.62 k 5 CR16 cerhnn

5,62 k

22O k
22O k 5

20

5

)

5 CR25

0.1 t\,lR24E tMetat fitm

0,1 t\4R24E tMetat fitm

0,5 t\1R30 l\4erat fitm
O,5

1 t\1R25 tMetat fitm
1 t\,1R25 t\.4etat film

0.5
5 CR25

5 CR25
5
5
5 CR25 Carbon
1

1

0,5

5
0,5 tVtR3O t\.4etat
0,5 |\IR3O

0,1 t\,1R24C
0,j t\iR34E
0,1 MR24C t\,4etat
O,t

't

I t\,1R25

b

5

O,t tVtR34E

0,5 tu1R24E

0,b

0,5

I

b
S
S
5

b CR16

Typu

Carbon

porm.

NilR3O tVerat

t\,4R24E Metat film

CR16 Carbon

CR25 Carbon
CR1O

Spec. Carbon
Spec. Carbon

W

0.05
t\,1R2b
CR16

0.05 W Trirnming
CR2S Carbon

CR16
O.O5 W Trimming

t\4R24C
MR25

i\1R25
O.O5 W

CR16
MR25

CR2S
265 V

W

O.OS

CR25
i\itR2s

0.05 W
tu1R25
VR37

CRt6 Carbon f

CR25 Carbon
CR16 Carbon
CRt6
CRl6 Carborr

CR16

fitm

Carbon

Carbon

Carbon

Trimminq
[,4etat f
Carbon

lvletat fitm
Carbon

t\.4etat f
lMetat fitm

Metat film
fvtetat fitrn

tMerat fitm
Trimminq
t\.4erat
Carbon
tMetat f

Carbon
pTC

tvtetat fitm
Trimmins
tMetat fitm

porm.

itm

porm.

fitm

potm.

itm

fitm

potm.

fitm

ilm

porm.

Carbon
t\4eral f itm

Trimming

t\,4etat fitm

Carbon

Carbon I

Carbon
Carbon

potm.

t_

L

I
_

I
L

--

I
t

f

E

f
a

f
I

-

[­L

- |
f

L

I,

._
!

t

l­L _

a I

t-

-

r-l
I

-

f
L

_
I

.
_

r

L

J­L

f,

L

4

f

­I

I

f

|

-l
|

I
I

­.

I

-

I
I

t

.

'

I
I

I

'

'

I

I
,

I
I

I
|

r

I

L

I
l

89

l
l
l
l
l
l
l
l

lr

Item

R50 1
R502
R 503
R504
R505

R 601
R602
R603
R604
R606

R607
R

608

R610

R701
R702

R703
R704
R705
R706
R707

R708
R709
R 710
R711
R712

'R713

R 714
R715
R716
R117

R718
R719
R 720
R721
R722

R723
R724
R725
R726

R721

R801
R802

R803
R804

Ordering

5322116
4a22
5322
5322

5322

4822
5322
5322 113 60097

5322
5322

5322 116 54665
4a22 11130269

5322

4A22 1'tO 63'tO3

4822 111 30308
4822110 63092

4A22 110
4822 110 63092
4822

4822

4822 110

4A22 110 63092

4822 110 63103

4822

4822 110

4822 110 63092

4822 110
4822
4822 110
4822 1r0 63103

4822 110
4822 110
4822

4822

5322

4822111

4422 1'11 30214
4822
4822 1 10 63069

4822 r 11 30333

4822 110 63116
4822

4822

4822

number

50457
100 10075
116 50676
116 54545
116 54528

r 16

30008

405

94165
116

54499

116

54627

116 54721

63092

110 63092
110 63092

63092

110 63r03

63092

63092

110

63103
63103

63103

63156
110 63158
110 42227
11130291

4

3027

110 63163

'10

1

63181

110 63081

'10

1

63081

100

196
909
604

50

12

1,8

249

13,3
40,2

1
205
680

120

270
210
270
270
210

214
210
680
680
270

210
270
680
680
680

680

68
a2
33
68

12
't2

120

39

560

100

r00

1
2,2

k
k
k

k
k

l\,1
k

k
k

k

tvi

k
k

Tol.

0,5

20

0,5
0,5

1

20

't0

1

1k

5
5
5

5

109/,

5

5

5

5

fÄ)

Type

t\,1R25

w

0.05

R25

M

R25

M

R25

M

2W

M R25
M R25

t\4 R25
cR16
M R25
cR25
cR16

cR25
cR25
cR25
cR25
cR25

cR25
cR25
cR25
cR25
cR25

cR25
cR25
cR25
cR25
cR25

cR25
cR25
cR25
V

R37

cR16
cR16

16

cR
c R25
cR25

cR16
cR25

cR25
cR25
cR25

lMetal film

Trimming

l\4 eta I
l\4etal
lvletal

NTC
Shunt
Wire-wound

Metal

l\4etal

lvletal film

Carbon

l\4 eta

Carbon

rbo n

Ca

Ca rbo

rbo n

Ca

rbo

Ca

Lä roo n

Carbon

Carbon

rbon

Ca

Carbon

rLon

Ca

Carbon

Carbon

Carbon

Carbon

rbon

Ca

Carbon

rbon

Ca

Carbon

rbo

Ca

Carbon

rbo n

Ca

Carbon

rbo n

Ca

Carbon

Carbon

Carbon

Carbon

Carbon

Carbon

Carbon

potm.
film
film
film

film
film

I film

n

n

n

J

J
.J

I

90

r

r

7 -2.2.

Capacitors

Item

c 101
c103
c 104
c105
c106

c108
c 109
c110
c111

c201
c202

c301
c302

c303

c304

c305

c306

c307
c308
c309

c310

c311

c c1
c402
c403
c404

c405
c406

c401
c601
c701
c702

c703
c704
c705
c706
c701

c801
c802
c803
c804
c805

c806

Ordering number

't22

4822
4822

4822

4822 122

4822
4422

4422

4422 122
4822

5322 121 44201

5322 121

5322 121 44025
5322
5322 124 14036
4422

4A22
4822
4422
4822
4422

5322 121 40281
4822

4822
4822
4822 122
4422 122

4822 122
482212230114

ß22

5322 124 1407

5322 121 40233

4422 122

4422 122

4822 122

4422 122

4822

4822 122

4822
4422 124 20459
4822
4422 124

4822

4422 124

31175
121 4017
122

31012

31176
122

31176
125 50071

121 40232

31125

122 30103

44025
t21 40233

122 31012
122

31191

122

311a9

122

31116

122

30103

122

30103

122 31175

122

30103

121 4023A

30103
30027

31125

122 30114

5

30103
30103

30103
30103

122

30103
30103

124 20459
't24

20459
20459

122 31012

20459

5

I ni

41O nF

pF

47

pF

390

pF

390

pF

5,5

22O nF

4,7 ^F

22 nF

10 nF

33 nF
33 nF

nF

680

15

1tF

pF

47

pF

5,6

pF

4.7
2,2 nF

22 nF

22 nF

22O nF

1 nF

22 nF

nF

33
22 oF

I ni

4,7 nF

2,2 nF
2,2 nF

pr

I

680 nF

22 nF
22 nF

22 nF
22 oF
22 nF

oF

22

,,E

22
22

IJF

22

ltF

22

1tF

pF

41
22

Tol.

fÄ)

10
l0

2
10
10

-20+80

-20+80

-20+80
10

10

10

10

10+50

2

pF

4,25

pF

Q,25

10

-20+80

-20+80
10

-20

+80

-20+80
10

-20+80

-20+80

-20+80

-20+80

20+80

-10+50
10

-20+80

-20+80

-20+80

-20+80

-20+80

-20+80

-

10+50

-10+50

-

t0+50

10+50

2

10+50

Volts

100
100
100
100
100

250

100

40
40

630

400
400

100

10

100

500
500
500

40
40

400

40

40

100

40
40

40
40

40
63

r00

40
40

40
40
40
40

10

10
10

10

100

10

plate

ic

Ceram
Polyester foil

ic

ic

ic

ic

plate
plate
plate

plate
plate

forl
forl

plate
plate

plate

plate
plate
plate

plate

plate

plate
plate

plate
plate

plate

plate

plate
plate

plate

plate

plate

plate

Ceram ic
Cerain ic
Ceram ic

Trimmer

Polyester foil
Ceram

Ceramic

Polyester foil

PolVester
Polyester
Polyester foil

E lectrolytic

Ceram ic
Ceram ic

Ceram ic
Ceramic
Ceram ic
Ceram ic

PolVester ioil
Ceram ic

Ceram ic
Polyester foil
Ceramic

Ceram ic
Ceram

Ceram ic
Ceram ic

Eiectrolytic
Polyester foil
Ceram

Ceramic
Ceramic
Ceramic
Ceram
Ceramic

Electrolytic

Electrolytic

Electrolytic

Electrolytic
Ceramic

Electrolytic

L

t
t.
t

i

5

t
t
t
t
t

t

?

t
t
t
t

t
t­t

r

91

Jr

.l

J
I

l

7,2.3.

7,2.4-

Item

conductors

Semi

101

v
v102
v 150
v201
v30l

v302
v350
v4

50
v451
v701

v102
v 703
v104
v705
v706

v 701
v750
v75l
v

752

v753
v154

v 755
v756
v151

.

v758
v759

v760
v761
VBOl
V802

I

v850
v851
v852
v853
v001

lntegratedcircuits
D 101

D703
D702

701

D
4101

4102
4301
A40r

Ordering

5322 130
5322
5322 130 40482
5322 130 34044
5322 130 44144

5322
5322 130 34114
4822 130
4422 130 30414

4822
4822 130 40938

4822 130 40934

4822 130

5322

4822 130 40941
4A22 130 40941

4822 130 30914

4822 130 30613

4422 130 30914
4822 130 30914

4422 130

4422 130 30914

5322
5322

5322

5322

4822 130
4822 130 30613

4822 130 40941
4822

5322
4822 130 30613
4822 130
4822 130

5322 r 30 34049

5322 209 85853

5322 209 85852

5322 209 14184

5322 209 14122

5322 209 45884

5322 209 A58A7

5322 209

5322 209 85886

number

44509

130 44405

130 44144

30414

130 40938

40938

130 44418

30914
34731

130
130 34731

130 34137
130

34737
30613

130 44246
130

34297
30613

3061 3

85885

Type/Description

BFOl6
oN528
BRY39
BSVSO

BF256B

VF256B

BZX19-C4V7
BY 164
BY 164
B C548

8C548
8C548
8C548
BF256A
8C558

8C558
coY54
BAW62
coY54
coY54

coY54
coY54
HP5082 7760

HP5082-7760

HP5082.7760

HP5082.7760
BAW62
BAW62
8C558
BC549C

BZX79 . B
BAW62
BAW62
BAW62
BZX15.C2V

oo
oo

HEF4555BP

HEF4511BP

10

1

c059
0055

oo0060
oo0064
oo0061
oo0063

I

J
J
.l

92

r_.

r,

7.3.

MODI

FICATTONS

Between
DMo1

Dl\401

900 onwarcls

D[i]01

1 715

onwaro

s

Dl\,401

1715

IN PIV]2517E

601

ancl

Repl.ced

Reason

R

ep la

Added

nce

Ca

R ep

iaced

Rep

acecl

ced

lled

C 101

C4O2

C406
v452
V802

R

I 18

R310

R313

sralr

sror v00t

Dr ftinq

sLrpp

irower
fe!r

the

(l

ssrpat-"(l frar

R610

C305

C306

C307

Track

C601

C60'l

s

connectecl
V350 is
Prckup

not

(hanc1)

820p

n

I

100n

33n
2n2
BZX79

8C548

BC549C
1 lvl

2M2

10k5
9k09 r\4R25
48k7

tok

=

82X15C2V1.5322

of

000046

V

OO0064

249k

205k

3.9p

5.6p

3.9p

4.7p

1.2n

2.Vt
ro 4301,,i

needed

..

3V rs

By

povver

the

io

when

anymore

tlLre

lvtR25

l\itRt5
500Vj

500Vt
500V1
500Vj
500V.
500V,

.neasur/ng

100V
100V

100V
100V

40V

C13

CR25
CR25
l\4R25

l\ilR25
t\1R25

clrssiltatr:tl

means

5 is

A301,'9

l0!i
10";

10.,"
t0!;

-ZO+BO

10";
10"i

1",
1",

tr) he.th

of rh,"

rltput

t{r rnrna

1,,,

1,':, 5322

O

25p 4822

0 25p 4822

0.25p
0

25p 4B2Z
10
i0

crrr

mains

.

4A22
4822

4822
4822
4922

5322 130

4A22

4A22

4822

4822

5322 1165Oj31
5322
5322

5322 11654619

130

34049

Fronj

rhe

/n

po!\/er

the

stat) stor

5322

4a22

4822

4922

currents

122

30031 replacecl

122

31115

121 40036

121 4A238

122

13O 4O%A

ßO 44246
j

10

1.10

63196

116
11650442

gV

of the

supt)

about 2V

1i6

54734 reptacecl

11654/21
122

31217 replacr:d

122

3119j

122

3121j
12231189
12231jj1reptacecl

12231116

(AC).

replacect

30114

34195

replacec.l

rep

63.187

rel)

54615

f

e\terral

ca!s

V,

rs

d

ace d try

acc(t

-"pt.icect

nq

heath

re:cly

by

by

try

by

by

by

t)y

r_
r*

I

r

t
t

b

t

[,

tr
t;
t;
t;

R eplac

R easo

pJaced

B e

ed

n

Rr04

10s)

41sl

C 103

Overloadinq

R406

R407

R4C8

R412

R414
R415
L-Aakaqe

range.

220n F
470nF

of

13k3
2kB1
470S2

100 'f2

13k3

2k87

47k

6k8
5k62
5k62

of safety

cR25

cR25

'100Vt
100V:

O00060

lvlR25
lv]R25

0.05W

0.05w
N,1R25

t\,1R25
CR25
cR25
cR16
CR16

recrifiers

4422

4822
i O
t0

0.5,t;

0.5"1,
2O9L

20..; 4822

0.59;

0.59.;

50;
5ei

V45OlV4b1

4822
5322 1

5322

5322 116

4822

5322 1165462,- reirlaced by
5322 116
4g22

4822

4822

4822

caLrs/ng

110

63054 reptacecl

110

64045

121

30031 replaced

401

22

1

5

1]6

5462i reptaced
552t9

1OO

10038repracec1

100

10075

55219

11O

631b2 rep

11O

6312s

111

30313

1113O3i3

(levrarion

tn

acerl

10 Nlfl

by

bV

bV

by

try

ei

tl
tl

t

tl

d
d

tl

*

93

2000

Dr\,101
onwards

4926

DMO2

onwards

Replaced

Reason

p.c.

New
Replaced

Reason

N4 od

Reason

l\4

od

easo n

R

Add ed

Replaced

board

if ied

if ied

4V 10+50

C303

Better

15tt
15

quality

10V

ir

electrolytic

of

N1

: C601

: Better

1p 63V
1g

quality

63V

of electrolytic

: RANGING circuit;

FC is connected

Signal
resistor R 727.

PM251,7 is

:

on or switched

O00065

kS2,

the
The

000063

: R416 and

R310
R

313

to manual

set

from a sinqle-range

power

supply;Vss C

function switch.

D,T

s

only

R417 220k 59'" CR16

MR25 12/o

9k09

t\,1R

10k

t\,1R 25

10k

t\4 R

100k

-10+50

-10+50

-10+50

Resistor

R724 is connected

to the

ranging,

switched

1%

25

191
196

25

4822

5322

capacitors

4822

5322

capacitors

kg input of

when the

function to a

(pin

4) is

connected to

on now

in

4822 1113O3O2

5322
5322
5322
5322

124 20519

replaced

124 14036

124 2O624 replaced by

14075

124

logic 0

to

Vl50 via the

instrument

multi range

kSr, D and

the

116 54615

(-8,5V)

new

is switched'

function

-8,5V

via

funr:tion

T

replaced by

is

116 54619

replaced by

116 54619

s

116 54696

by

Modif ied : C304 is connected

Replaced

Dt\,103 572 Wire

Dr\,103 6131

r!

GENERAL

O00064 DriIt
Tempory

F inal

solution

solution

Replaced

from

c311

lnF 40V 20+80

: V850 BZX79-C10

BZX79-810

p.c.

board to screening

: Topcover 5322

Window

: New text

: Change adjustmentq.

All adjusting
ceramic

:

Ceram

ic 0O0064

is replaced bV a spring

5322

5322

5322

lay-out,

data

is

lC's

used.

+8,5V

to

441 94493
441
459

lnstead of

is replaced by

94558

24086ls

replaced by

459 24094

MAN replaced by A

have

be changed

to

4822 12231115

+

13O 34297

5322

130 34297

5322

from 9000

to

is replaced by

digits

8990

unt

ll

Flash over

Short circuit

)

Between

I
!

Tempory solution

Final solution

New O00063

PTC

and screening

R401

in

fl ran3es

the

glued

:

lnsLrlation

term

:

PTC

Insulation

Pin

tape

inals

lDl\,401

mounted lower

tape.

is internally

17

4A22 n2 301 14 is

on the screening above

1800 onwards).

(on

interconnected now Capacitor C401

added and connected

The ordering number of the

p.c.

board)

000063

lnput

from

the PTC and

4926 on.

Dl\,401

22nF

pin

to

17 and

$

remains 5322 209 85886.

96

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tol

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'l

tt

l-l lrät

ffi

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ttoq

I c306 |

-(JUZ r

@@-

tol
tol

tgl

f.-'il

Fig.

51. P.c.

boards

conductor

side

X6 POWER

TO

(-)

VIEW

BOTTOM

T

80'1

X4

FUSE

TQ BATTERY

COMPARTMENT

X3

0

---i

(R106),

I

l\-

,---*"i;'i

9ffi0

fl;ü:iAlll

,$l

1&

h

'

rc.+

i'rr:,,'rg;"'

-

.,"

:r,;:i

719

lFl

.

lRl

llJ

s3/ s6

VIEW

BOTTOM

,ir'ir

lE5öu-L

'

;

H

1

II,JUJI

X6

POWER

Fig.

50. P.c. boards

component

side

I
I

97

I
I
I
I
I
I

Il

I
l

SIDE

..+2OO'C

I

,^,o-

t /-\ t

rT

fl

SLI

II

DER

l
l
l
l

lo

l

l

J
l

Fig.

CONDUCTOR

Function switch

52.

t

lay-out

SIDE

KQ

12

7

to

I

I

I

I