RAPITEST DM25 Operator's Manual

ra@

DIGITAL

MULTIMETER

-.G

OPERATOR'S

MANUAL

COTTTETUTS

PAGE

1.

Safety lnformation

1

.1 Preliminary

1.2 During

1.3

Symbols

1.4 Maintenance

2. Description

3. Operating

3.1

3.2

3.3

3.4

lnstruction
Measuring
Measuring
Measuring Resistance
Testing

Use

Voltage
Current

Diode

1
1

2

3

4

5

I

9

I

10

11

Testing

3.5

3.6 Continuity

4.

Specifications
Accessories

5.
Supplied

5.1

How

5.2

Battery &

6.

Transistor

Test

with the

to use the

Fuse Replacement

meter

holster

't2

12

13

20

20

20
22

1.

SAFETY IIUFORUATIOTI

This multimeter

instruments

Follow

good

in

1.1 PRELIMII{ARY

r

When

-

-

o

Full

supplied.
Measuring leads

with

safety and operating

all

operating condition.

using the meter, the user

Protection against
Protection

compliance

lf

necessary,

has

an overvoltage

of the

designed

been

the dangers

meter

with safety

they

must be

according to

category

instructions to ensure that

must

observe all

electrical

of

against

in

misuse.

standards can be

must be

good

replaced

condition.

{CAT

ll}

current.

with the

tEC-1010 concerning electronic

pollution

and

normal safety

guaranteed

2.

meter is

the

rules

only

same model

used safely

concerning:

if

or

with

used

same electric

measuring

kept

and is

leads

test

ratings.

-1-

DURING

1.2

.

Never

measurement.

o

when the

o

when the

highest

o

under

oWhencarryingoutmeasurementsonTVorswitchingpowercircuits,alwaysrememberthat

o

o

-

2-

USE

exceed

meter

value

Position-

rotating

Before

test'

may-0"

there

perform resistance

Never

Always

behind

be

the

the

is

scale

the

nign

careful

probe

protection

linked

to

range

amplitude

when

barriers

values

limit

measurement

a

to

measured

be

change

selector

measutements

working

while

to

voltages

with

measuring'

indicated

circuit,

is unknown

functions,

pulses

voltages

on

at

live

test

in specifications

not touch

do

beforehand,

disconnect

points

circuits'

6OV

above

unused terminals'

the

set

test

can

which

3OV

or

dc

for

range

leads

damage

rms'

ac

range

each

selector

from the

meter'

the

Keep

of

at the

circuit

fingers

1.3

SYMBOLS

information.

2\tmportant

safety

.A Dang"rors voltage may

ground.

rartn

{

Doubte

El

.

Before

from any measurement circuits.

.

Components should not be connected

CAT

equipment, etc

CAT

installations

insulation

attempling to insert transistors

ll:

maximum voltage between terminals

lll:

maximum voltage between terminals

etc

(Protection

refer

to the operating

present.

be

ll).

class

for testing, always be sure that

to the hFE socket when make

and earth is 1000V when used on local level, i.e. appliances,

and earth is 60OV when used on distribution level, i.e, fixed

manual.

leads

have been disconnected

in voltage

measurements with test leads.

portable

-3

TIIIAINTENANCE

1.4

o

Before

.

For continue
ratingsr

F1

r

lf

any

be

to

o

Never

o

To clean

solvents

meter,

protection

or

out.
meter unless

the

meter,

the

it.

on

the

abnormalities

opening

F 2AI25OY

faults

checked

use

against

F2:

use

always

fire,

1OA/250V

F

are

back

the

damp

a

disconnect

replace

observed,

cover

and

cloth

leads

test

fuse

the

in

is

only

meter

place

with the

and

mild detergent

from all

not be used

can

fastened

sources of

specified

fully'

do

only,

electric

voltage

more

any

not use

current'

current

and

it has

and

abrasives

or

DESCRIPTIOII

2.

meter

This

performing

-

DC

-

AC

-

DC current

-

Ac current

-

Resistance

-

Diode

-

Transistor

-

Audible

functions:

voltage

voltage

test

continuity

portable

is

a

measurement.

measurement,
measurement,
measurement,
measurement,

test

test

professional

ranges

5

ranges

5

ranges

7

ranges

6

ranges

7

measuring

2OOrnV

from

2OOmV to

from

2OpA

trom

200pA

from

2OOo to

from

instrument

1000V

to

70OV

1OA

to

10A

to

200MO

with 3%

digit

LCD'

capable

-5-

of

1.

Power

Switch

2. LCD

Display

3. Transistor

4. Rotary

5.

V/O

Switch

lnput

6. COM lnput

7.

A lnput

8. 10A

Jack

Input

Testing

Jack

Jack

Jack

Socket

2.1 FUNCTION

are

ranges.

as

extend

off

8

release

There

well

POWER SWITCH

2.2

push-push

A

To

turned

switch to

RAilGE SELECTOR

ATTID

functions

switch

the

is used to

battery

automatically

it

and

and 32

life,

Auto

within

then

ranges

turn

around

push

provided.

meter

the

Power-Off

4O minutes.

it once

more.

A rotary

off

on or

function

To turn

is

switch

.

provided{Optional).

is

on

used to

meter again,

the

select

The

push

functions

will

meter

the

as

be

power

2.3INPUT
This meter

connect

JACKS

has four

the black test

input

lead

iacks

to the

that

COM

protected

are

jack

and

the

against

red test

overload

lead

as shown

to

limits. During

the

below:

use'

Function

2OOmV

v=/v-

o

n+t

A=I A-

10A

Red

Lead Connection

vta
vta
vta
vta

A

10A

lnout

250V dc or rms

1000V dc

25OV dc
25OV dc

2A dc

1OA

dc or rms ac

or

or
or

or rms

7O0V
rms ac
rms ac

ac

Limits

ac

rms

ac(sine)

Current ranges

-8-

protected

are

by

fuses

3.

OPERATI]IIG

INSTRUCTION

MEASURIT{G

3.1

1.

Connect

2.

Set
the

Read

3.

measurement.

4.

When only

has

the

rotary

the

source

LCD

be selected.

to

3.2 MEASURING

1.

Connect

maximum

VOLTAGE

black

switch

load under

or

display.

figure

the

CURRENT

the black

For a

2A.

of

test

at

The

" 1

test

lead to

maximum

COM

the

desired

the

measurement.

polarity

"

is displayed,

lead to the

of

of

jack

V.=or

V

and

-

the

range

red connection

it indicates overrange

jack

COM

1oA,

and the

move the

red lead to the

red

test

position

will

red

lead

and

indicated

be

situation

test

to the

connect

lead

10A

jack'

V/O

test

when

and the

to the

iack.

leads

making

higher

A

iack

across

a dc

range

for a

2.

Set the

with

Read

3.

measurement.

rotary switch

load under

the

LCD display.

4. When only the
to be selected.

measurement.

The

"

figure

at desired

polarity

A.--

of red lead

1" displayed,

--

A

or

connection

it

indicates overrange situation

range

position

will

and connect test

be

indicated when

and the

higher

id series

leads

making a

range has

DC

3.3 MEASURING

1. Connect the black

polarity

The

2. Set the

resistance under

NOTE:

1. For resistance

rotary switch

-10-

RESISTANCE

test

red lead connection

of the

measurement.

1MO, the

above

lead to

the COM

at desired o

Read LCD

meter

iack

positive

is

range

may

and

position

display.

take

a

the

"

+

few

red

teas

"l

and

seconds

lead

to the

connect test

to stabilize

jack.

V/O

leads across the

reading.

(NOTE:

2.

3.

4. At

the

$hen

overrange
When checking

capacitors

and all

2OOMO

subtracted

reading

will

is not

input

condition.

in-circuit

are

range display

measuring

from

1O1.0 and

be

connected,

i.e. at open circuit,

resistance, be sure

fully discharged.

lOcounts

is

results.

correct

the

the

when

test

For example,

measuring

result should

"'l "

figure

the

under test

circuit

leads are shorted.

measuring

when

1O1.0-1.O=1OO.OMO'

be

will

be displayed

has

These counts

100M O

power

all

resistance,

for the

removed

have

to be

the

3.4 TESTING

1. Connect

polarity

The

2.

the

Set

cathode

the

of the diode.

drop

DIODE

black test

the

lead connection

red

of

rotary switch

of the

lf

lead

to

the

atll-position

under

diode

lead connection

the

COM

positive "

is

and connect

testing.

jack

and

the

+

the

meter

The

is reversed,

test

lead

to the

red

"l

red lead

to the

anode,

will show the approx.

"1" will

figure

only

V/O

iack'

the black

forward

be displayed.

(NOTE:

lead

voltage

11

to

3.5

1

2.

s.

TESTING

.

TRANSISTOB

Set the

ldentify

lead.

front

function

whether

lnsert

Panel.

lcD iisplay

Vce 3.2V.

and

switch

the

of the

leads

will show

hFE

at

transistor

transistor

approximate

the

position'

NPN or

is

be tested

to

hFE

PNP

value

type

into

and

proper

at the

locate

holes

condition

test

emitter'

the

of

base

testing

of base

collector

and

socket

current

on the

1OpA

CONTINUITY

3.6

1. Connect

2.

Set
under

sound.

-12-

rotary

the

testing.

the

TEST

black

switch

lf

lead

test

at

t

continuity

COM

the

to

position

existsli.e.,

and

iack

connect

and

resistance

red test

the

leads

test

less than

lead to

across

about

the

two

7O o

V/O

points

built-in

l'

jack'

of

circuit

the

buzzer

will

4.

SPEC|F|CATIOilS

Accuracy

82oFl

4.1

GENERAL

is

specified

relative humidity to 8O%.

with

Max. Voltage

Ground

Fuse

Power

Display

Protection

Supply

Measuring Method

Overrange

Polarity lndication

Low Battery

Operating

Temperature

Between

lndication

lndication

period

fora

Terminals and

of one

year

after calibration

Earth

and at

70OV

1OOOV

dc

or

A: F 2Al250V

9V battery,

LCD, 1999 counts max., updates
Dual-slope integration A/D

"

"displayedonly

l

"

"

-

"

E

ooC to

NEDA 1

displayedautomatically

"

displayed

4OoC

18oC

rms

1OA: F 1OA/250V

604 or 6F22

(32oF

to

28oC

to

(sinel

ac

converter

104oF)

(64oF

2-3lsec

-

to

13

Storage

Dimension

Weight

Temperature

4.2DC VOLTAGE

-1OoC

x

91

31 Og

to 50oC

189

'

(lncluding

(10oF

.5

3'1

batterY)

mm

to

't22oFl

Range

2OOmV

2V

20v
200v

1

000v

lnput lmpedance:

-14-

lOMO

Resolution

0.1mV

1mV

1OmV

0.1v

1V

+

O.5olo of
O.5olo of

f

+

0.5olo

t O.5%

0.8%

t

Accuracy

rdo

rdg t
rdq

of

rdq

of

rdg

of

+

t
t
t

1

1

1

1

2

diOits

digits

digits
diqits
digits

4.3

AC VOLTAGE

Range

2OOmV

2V

20v

200v
700v

lmpedance:

lnput

Frequency
Response:

lOMO

Range: 40

Average,

4OOHz

to

calibrated

Resolution

O.1mV

1mV

lOmV

o.1v

1V

in rms of sine

wave

Accuracy

1 .2o/o of

L

t

+

0.806

0.806

of

of

1 O.8olo ol

+

1 .2o/o of

rdq t 3 digits
rdq t

3 diqits

+

rdq

3 diqits

+

rdo

3 diqits

+

rdo

3 diqits

15

i

I

I

4.4 DC

CURRENT

overload

-

16

Range

2OaA
2OOpA

2mA

2OmA

200mA

2A

10A

-

Protection:

Resolution

0.O1/A
O.'luA

1uA

lOzA

O.1mA +

'lmA

lOmA

F

24 fuse

+

+
+
+

+

+

tor2oyA

Accuracy

2.OVo

O.8%

O-8o/o

O.8olo

'l

.5o/o

1-5o/o

2-Oo/o

rdg

of

rdg

of

rdo

of

of rdq

rdo

of

rdg

of

rdq

of

to 2A ranges,

+

5 diqits

+
+

+
+

1

+

1

+

5 dioits

F 1oA

1
1
1

diqits
dioits

dioits
dioits
diqits

fuse

for

Burden

10 mV

1.OmV

100mV
1'lmV

2.0mV

o.4v

0.03v

1oA

tA

range.

Voltaoe

lpA

/

sA

mA

/

mA

/

/ mA

A

/

AC CURRETTIT

4.5

Range

2OOpA

2mA

2OmA

200mA
2A

10A

Overload

Frequency

Response:

Protection:

Range:

Average,

Resolution
O.1zA

1uA
10zA

O.1mA

1mA

lOmA

F 2A fuse

4O

4OOHz

to

calibrated

'l

+
+

1 .Oo/o

+

1.Oo/o of rdo + 3 dioits

+

1.8o/o

+

1.8o/o

t

3.Oolo

for 2OpA to

rms of sine

in

Accuracy

.8o/o of rdo t 3 diqits

rdo t 3 diqits

of

rdq t 3 diqits

of

rdq t

of
of

rdq

3'diqits

+

7

diqits

2A ranges, F 1OA

wave.

fuse

Burden Voltaoe

1.OmV
IOOmV / mA

11mV

2.OmV / mA

o.4v / A

0.03v /

1OA range.

for

/

rrA

mA

/

A

't7

RESISTANCE

4.6

Ranqe

200c)

2ka

20ko

200kf)

2MO

20MO
200MO

Maximum

NOTE:

On

_

1g

Open Circuit

2OOMo range,

subtracted

from

Resolr,tin

o.1rl

1c)

100
1000
1ko
1oko

1 00ko

Voltage:

TOOmV(3V for 2O0Mo

if

short

measurement

inputs,

display

results.

Accuracv

of

of

(rdg

rdg
rdg
rdg
rdg
rdg
rdg

-

10

t 0.8% of
r

0.8% of

t O.8% of
t

0.8%

t 0.8% of

+

1.Oo/o

t 5.Oolo of

rangel

will read 1Mo. This

+

3

+

1

+

1

+

1

+

1

+

2

digits)

1Mo

digits
digits
digits
digits
digits
digits

should

10

t

digits

be

4.7

DTODE

4.8

CONTINUITY

Range

)f

Range

n

Shows

forward

Buih-in

about

than

Descriplion

approximate

the

voltaqe

Description

will sound,

buzzer

7OO

droP

if

the

Forward

3.2V

Vce

resistance

Test Condition

Current

test

under

1mA

is

less

5. ACCESSORTES

5.1

SI'PPLIED

Test

Battery
Operating
Holster

WITH

Leads

Manual

THE MULflMETB

Electric

9V, NEDA 1604

Ratings

1

sOOV, 1OA

or 6F22

MASTECH
HYSOO4240

HYHT-60

HYTL-O6O

5.1 HOW

The

holster

comes
to:

a.

Support

b. Support

20-

TO

with

USE

is

two

THE

used

the meter with

meter

the

HOTSTER

protect

to

stands installed

a

standard

with

a small

the meter

and

to

make

together. The following

ar€le.

angle

using

the

little

the measurement

figure

shows how

stand.

more

to use

comfortable.

holster

the

lt

c. l{rtr

Tfte

upDer

d-'Hold

meter on the

ilE

fittle stard

fte

the

on

leads

test

holster.

off

wall

frorn

using the

back

the

little

stand.

side of

@

large

the

N

stand ard

f,

insert it into holes located

BATTERY

6.
lf

the

Remove
new

Fuse rarely

the case as mentioned

fuse with ratings

AND FUSE

"

sign

6

screws on the

one.

need replacement

Iwanrruc

Before

measurement

For

F1: F

22

attempting

protection

2A|25OY

circuit

against fire, replace fuses

REPLACEMTT

"

appears on the

back

above

specified.

to open the

to avoid electric

GET PLC,

Unit 4,

Brunswick
London Nl1

lndustrial

LCD

cover

and

and

blow

and take

case,

shock

F2: F 1OA|25OY

Estate,

UL

PCB

it indidates

assembly

that the battery

result

a

out

sure that test leads have

hazard.

with

specified ratings:

display,

open the case. Replace

almost always as

the

be

only

the exhausted

of the operator's

from

the case. Replace

been

should be

replaced.

battery

error. Open

the blown

disconnected

with

from

a