Lnnova 10 MegOhms Bedienungsanleitung

DIGITAL

c<·~·>~

MULTIMETER

MegOhms

ER'S

UAL

c@us

Title Page No.

INTRODUCTION

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

SAFETY PRECAUTIONS/WARNINGS

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

SPECIFICATIONS

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

CONTROLS AND INDICATORS

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

TESTING PROCEDURES

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

BATTERY AND FUSE REPLACEMENT

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

MAINTENANCE

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

SERVICE PROCEDURES

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

INTRODUCTION

• Congratulations.

You

have purchased a precision instrument

manufactured to the highest quality standards. This Digital

Multimeter is a general-purpose instrument designed for use

general electronics, home electrical applications, and auto-

motive electrical/electronic systems.

• This meter is designed to

test

measure

AC voltage, DC

voltage, batteries, DC current, AC current, resistance, diodes

and continuity.

• Please take the time to read these operating instructions thor-

oughly

and·

completely. Failure to follow these instructions may

result

electrical shock, instrument damage and/or damage

to the equipment under test. Always use extreme caution

when working on or around electrically operated equipment.

SAFETY PRECAUTIONS/A WARNINGS

not

operate this multimeter before reading this manual in its

entirety. The following guidelines must be followed to avoid acci-

dents that can result

electric shock or personal injury.

• Pay close attention to A WARNINGS stamped on the front

and rear

the meter's case. These warnings, as well as all

warnings and precautions used through out this manual, must

be followed to avoid electric shock and/or personal injury.

• The RESPONSIBLE PARTY shall be made aware that,

the

equipment is used

a manner not specified by the manu-

facturer, the protection provided by,

the equipment may be

impaired.

• Before using any

the functions on this meter, verify its

·proper operation on a known similar function source where

the unit value is also known.

Take

corrective action based on

the indicated results.

prevent electri.cal shock and/or damage to the tester or the

equipment under test, observe the following safety precautions:

• DO NOT.apply more than the rated voltage, as marked

the meter, between terminals or between any terminal and

earth ground.

• Use caution when working above 30V

rms, 42 V peak, or

60 V

DC.

Such voltages pose a shock hazard.

•

·To

avoid false readings that could lead to possible electric

shock or personal injury, replace the batteries as soon as the

low battery indicator

displays.

• Always inspect the multimeter, test leads and any other

accessories for damage prior to every use. If any damage is

found, do not.use tester until repairs are done.

• Always consider electrical and electronic equipment to

ener-

gized (live). Never assume any equipment

de-energized.

• Never ground yourself when taking electrical measurements.

Isolate yourself from ground by using dry rubber insulating

mats to cover all exposed/grounded metal. Stand

rubber

mats

and

wear dry clothing.

• Never take resistance measurements on energized (live)

electrical or electronic equipment.

• Use one hand, instead of

two,

whenever possible to take

measurements. Iftwo hands must be used, use extreme cau-

tion not to contact any energized conductors with your hands.

Be certain test leads are dry and clean.

•

not hold the instrument when taking measurements. Place

the instrument on a clean, insulating surface prior to taking

any measurement.

• Don't become part

the circuit. Think safety. Act safely.

Ifworking on a vehicle, take the following added precautions:

• Only work on vehicle

a well ventilated area.

• Always wear safety eye protection.

• Avoid moving fan blades

any potentially moving parts.

• Avoid hot engine parts.

• Put transmission

"park" (automatic transmission vehicles) or

"neutral" (manual transmission vehicles). Set the parking

brake.

•

Turn

the ignition "otr' before connecting or disconnecting any

testing equipment.

• Put blocks on drive wheels.

• Avoid wearing loose clothing or jewelry when working on a

vehicle.

• Read your vehicle's service manual and follow it's safety pro-

cedures.

SPECIFICATIONS

GENERAL SPECIFICATIONS

AND

FEATURES

• 3-% digit LCD display (maximum reading

2000); 3 LEOs;

green, yellow and red

• Auto Range (ACV,

DCV,

Ohm, AC rnA, and DC rnA)

• Automatic negative (-) polarity indication

• Automatic zero adjustment

• Over range indicator (except 10 A function). Displays "OL" on

LCD

• Low battery indicator. Displays battery symbol

on LCD

• Automatic

powe~

shut off(after 15 idle minutes)

• Pollution Degree 2

• Measuring circuit category

• Operating environment:

Temperature -32° to 104o

(0° C to

40o.

Humidity-

Less than

80°/c;

relative humidity (non-condensing)

Altitude-

up to 6562 ft (2000 meters)

• Storage environment:

Temperature -4oto 140° F (- 20° to 60° C)

Humidity- Less than

90o/o

relative humidity (non-condensing)

• Power Supply:

Two

1.5V

batteries

• Fuse: 315mA/250V 5X20 mm (Radio Shack, GMA/217

series; #270-1046) fuse ·

• Dimensions:

Height-

5.50 in. (139 mm)

Width -3.50 in. (89 mm)

Depth -1.25 in. (32 mm)

• Weight (including batteries): approximately 6.3 oz (180 g)

ELECTRICAL SPECIFICATIONS

DC VOLTS

Range Resolution

Accuracy

Notes

200.0mV 0.1mV

2.000V 1mV

±(0.8o/o

Input Resistance: 1

OMQ

20.00V 10mV reading Overload Protection: 600V DC

200.0V 100mV + 5 digits)

AC 600V RMS.

600V 1V

ACVOLTS

Range Resolution

Accuracy

Notes

2.000V 1mV Input Resistance: 10MO

20.00V 10mV ±(1.2°/o

Overload Protection: 600V DC

200.0V 100mV reading

AC 600V RMS.

600V 1V + 5 digits) Frequency Response:

50Hz-

400Hz

~ESISTANCE

(OHMS)

Range Resolution

Accuracy

Notes

200.00

100mo

2.000k0

±(1.0%

Overload Protection: 250V DC

20.00ko

100

reading

+ 5 digits) or AC RMS.

2oo.oko

1000

2.oooMo

1ko

20.00MQ 10kQ

±(2.0o/o

reading

+ 5 digits)

AMPS

Range Resolution

Accuracy

Notes

20.00mA 1

OJ,LA

±(1.0°/o

Overload Protection: Fuse

reading 315mA/250V

200.0mA

100J.LA

+ 5 digits) Input Voltage Drop: <0.2V.

2.000A 1mA

±(2.0o/o

Unfused; 15sec maximum

*10.00A reading Input Voltage Drop: <0.2V.

10mA + 5 digits)

*A waiting period

at least 15 minutes is necessary between

every 15 second testing period.

ACAMPS

Range Resolution

Accuracy

Notes

20.00mA

10JJA

±(1.5o/o

Overload Protection: Fuse

200.0mA

100J.LA

reading 315mA/250V

+ 5 digits) Input Voltage Drop: <0.2V.

BATTERYTEST (LEOs)

When the voltage

the

battery

being

tested

lower

than

10%

its

rated voltage, the·

red

LED

will

not

light.

Load

Range

Resolution

Current

Accuracy

Notes

Green LED: 1.30V

±0.075V and

up.

Yellow

LED: 0.94V

1.5V 0.001V 10mA ±0.075V to 1.29V

(approx.) ±0.075V.

Red LED:0.15V±0.075V

to 0.93V±0.075V

Green LED: 5.22V

±0.3V and

up.

Yellow

LED: .3.76V

6V 0.01V 100mA ±0.3V to 5.21V±0.3V.

(approx.) ±(5%

Red LED:0.6V±0.3V to

reading 3.75V±0.3V

+ 5 digits) Green LED: 7.83V

±0.45V and

up.

Yellow

LED: 5.64V

9V 0.01V 10mA ±0.45V to 7.82V±0.45V.

(approx.) Red LED:0.9V±0.45V to

5.63V±0.45V

Green LED: 10.44V

±0.6V and

up.

12V 0.01V 200mA

Yellow

LED: 7.52V

(approx.) ±0.6V

0.43V±0.6V.

Red LED:1.2V±0.6Vto

7.51V±0.6V

DIODE/CONTINUITYTESTS

Function

Range

Resolution

Description

Note

Diode Test 2V 1mV Test Current:

1±0.6mA

Test Voltage: Overload

Approx. 1.5V Protection:

Continuity

2000

0.10

Approx.

1200

250V DC

Test less, buzzer

ACRMS

(beeper) will

sound

CONTROLS AND INDICATORS

1. DCV Function: Measures

volts. Auto-ranging from 0 to

600 volts (

impedance)

ACV Function: Measures

volts. Auto-ranging from 0 to

600 volts (10

Mil

-impedance)

Resistance

Function:

Measures resistance. Auto-

ranging from 0 to

20Mn

(20,000,000Q).

ACmA Function. Measures

current in milliamps. One

range: 0 to 200 milliamps.

DIODE

Function

..._ : For

testing diodes.

9 8 7

CONTINUITY

Function

·>»

: Tests for continuity between

two points.

Volts, mA, OHMS,

BAT,

DIODE and CONTINUITY

Input

Jack.

COM

Input

Jack: Common·InputJack.

DC10A

Input

Jack. For red test lead probe connection

when measuring high DC current (up to 10 amps only).

10. DC10A

Function:

Measures DC current. One range:

10Amps (DC from 0 to 10 amperes). Unfused.

11. DCmA Function: Measures DC current

Milliamps. One

range: 0 to 200 milliamps.

12. BatteryTest Function: Four ranges and three LEOS (green,

yellow and red). Tests small batteries;

1.5V,

6V,

9V and

12V.

13. OFF Function: Turns unit "off'' when function

selected.

14. Function/Range SelectorSwitch: Selects desired function

or range.

15. Liquid Crystal Display (LCD): Displays results of tests or

measurements.

Preparation and Caution Before Use

• Inspect the digital multimeter for damage to the case. Do not

use if cracked, distorted, excessively dirty or any abnormal

condition exists.

• Inspect the test leads for damage. Check for cracked insula-

tion, broken or damaged probes, loose or bent probe pins.

not use ifany abnormal condition exists.

• Set the Function/Range Selector Switch to the proper range

BEFORE taking measurements. If the range/function must

be switched during a test, ALWAYS remove

t~e

test leads

from the circuit being measured before switching settings.

•

avoid possible electric shock, instrument damage, and/or

equipment damage when taking voltage

current measure-

ments, DO NOT exceed the maximum value

the selected

range.

• Ifthe unit is used near high noise Radio Frequency (RF) gen-

erating equipment (spark plug wires, ignition coils

alterna-

tor), the display may become unstable or indicate large errors.

Ifyou obtain erratic readings during use, isolate the Multimeter

as far away as possible from these components.

TESTING PROCEDURES

A. AC/DC VOLTAGE MEASUREMENT

A WARNING A

avoid

possible

electric

shock,

instrument

damage

and/or

equipment

damage, DO NOT

attempt

measure

voltages

ABOVE

600V AC/DC

take measurements

the voltage

unknown. 600V ACIDC between the COM

and

jacks

the

maximum

voltage

that

this

instrument

designed

measure. The

"COM"

terminal

potential

should

not

exceed 300VAC/DC

measured

ground.

1. Plug the BLACK test lead into "COM" jack

the multimeter;

plug the RED test lead into the "V" jack.

2. · Set the meter's Function/Range Selector Switch to the

appropriate ACV

DCV position as desired (see Controls

and Indicators, Items 1 and 2).

3. Place the RED test lead onto the positive (+) side

the item

being tested and the BLACK test lead onto the negative (-)

(across the source/load) side

the item. BE CAREFUL notto

touch any energized conductors with any part

your body.

4. Read the results on the display.

B. RESISTANCE MEASUREMENT n (OHMS)

A WARNING A

Resistance measurements

must

be made

"de-ener-

gized"

(dead)

circuits

ONLY.

Impressing

a voltage

across

the

multimeter's

terminals while

set

any

resistance

range

may

result

electric

shock,

instrument

damage

and/or

damage

equipment

under

test.

MAKE

SURE

equipment

completely

de-energized before

taking

any

resistance measurements.

1. Plug the RED test lead into the

"0"

jack

the multimeter;

plug the BLACK test lead into the "COM" jack.

2. Set the meter's Function/Range Selector Switch to the

"0"

range function (see Controls and Indicators, Item 3).

NOTE:

obtain accurate readings, disconnect

least one

side

the item undertest from the circuit

circuitboardbefore

measuring resistance.

Place the RED test lead onto one side

the item being test-

ed and the BLACK test lead onto the other side

the item.

(Polarity does not matter when checking resistance).

4. Read the results on the display.

C. DIODE TEST

A WARNING A

avoidelectrical

shock

and/ordamage to the multimeter,

ensure the

power

removed from the circuit before

any

DIODE testing procedure is conducted. Test diodes

de-

energized(dead) circuits only, never

live circuits.

NOTE: A diode is a semiconductor device that lets current flow

one direction

only.

the diode to be tested is

part

a circuit

(with otherelectronic components), you must isolate it from the

other components

disconnecting

least one side

it from

the circuit before testing. A good diode will show a low voltage

dropacross itsjunction (0.5-0.8 volts for a silicon diode

about

0.3V for a germanium diode) when the leads are connected in

one polarity and a very high resistance (or open circuit) when

the leads are reversed (connected in the opposite polarity).

1. Plug the RED test lead into the

+1-

jack

the multimeter;

plug the BLACK test lead into the "COM" jack.

Set the meter's Function/Range Selector Switch to the

+1-

position (see Controls and Indicators, Item 5).

Place the RED test lead onto one side

the diode being

tested and the BLACK test lead onto the other side.

4. Read the results

the display.

Reverse the test leads and again read the results

the dis-

play.

Compare the two readings. One reading should indi-

cate a voltage drop value; the other reading should indicate

an overrange (OL} condition. See note above.

CONTINUITYTEST

A WARNING A

avoidelectric shock,

shut

off

the

power

the testarti-

cle before testing

for

continuity.

1. Plug the RED test lead into the

·>»

jack of the multimeter;

plug the BLACK test lead into the "COM" jack.

Set the meter's Function/Range Selector Switch to the

·>»

position (see Controls and Indicators, Item 6).

Place the RED Test

L.:ead

·one·

end

the wire or device

being tested for continuity

and

the BLACK Test Lead to the

opposite end.

4. Listen to the sound

the beeper and confirm the results by

reading the display. ·

NOTE:

The

beeper will sound

only

the continuity

the item

under test (resistance between the two fest leads) measures

less than 120 ohms.

AC/DC CURRENT MEASUREMENT (AMPS)

A WARNING A

prevent

electrical

shock

when

performing

current

measurements,

all

steps

indicated

below

NOT

skip

any

steps

take

any

short

cuts.

The DC10A range

not

fused.

avoid

current

hazard

and/or

damage

the tester, DO NOT

try

take meas-

urements

circuits

that

have

than 10 amps. DO

NOT take

than 10

seconds

take the reading. A

waiting

period

LEAST

15 MINUTES

necessary

between

every

second

testing

period.

1. Plug the RED test lead into the "rnA" orthe

"DC1

OA"

jack of

the multimeter, as applicable; plug the BLACK test lead to

the "COM" jack.

Set the meter's Function/Range Selector Switch to the

appropriate Amps range position as desired (see Controls

and Indicators, Items

10 and

•

measure from 0 to 200mA, set the Selector Switch to

the "DCmA" or "ACmA" position, as applicable.

•

measure from 200mA to 10 Amps DC, set the

Selector Switch to the "DC10A" position.

Disconnect the battery, or shut off the power to the circuit

being tested.

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