Megger AVO410 User guide [ml]

mM

AVO410

Digital multimeter
Digitale Multimeter
Multimèter numérique
Multímetro digitales

User manual

Bedienungsanleitung

Manuel utilisateur

Guía del usuario

1

G SAFETY WARNINGS

Safety warnings must be read and understood before instrument is used.
The following safety information must be observed to insure maximum
personal safety during the operation of this meter:

■ Do not use in wet environments.

■ Measurements beyond the maximum selected range must not be attempted.

■ Extreme care must be taken when measuring above 50 V, especially on live

bus-bars.

■ To measure voltage, the instrument must not be switched to a current or

resistance range, or to the diode check or buzzer position.

■ Circuits must be de-energised and isolated before carrying out resistance

tests.

■ The rotary selector switch must only be turned after removing test

connections.

■ All external voltages must be disconnected from the instrument before

removing the battery.

■ Test leads and prods must be in good order, clean, and with no broken or

cracked insulation.

■ UK Safety Authorities recommend the use of fused test leads when measuring

voltage on high energy systems.

■ Replacement fuses must be of the correct type and rating.

■ The instrument must not be used if any part of it is damaged.

■ Check for correct instrument operation by testing a known voltage before

and after use. Do not use if misleading results are obtained.

■ Warnings and precautions must be read and understood before an instrument

is used. They must be observed during the operation of this instrument.

Note

This instrument must only be used by suitably trained and competent persons

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Contents

Safety warnings ............................................................................................ 2

Symbols used on instrument ........................................................................ 3

Introduction .................................................................................................4

Operation .....................................................................................................5

Specifications ............................................................................................. 10

Manual de l’utilisateur ............................................................................... 16

Bedienungsanleitung ................................................................................. 30

Manual del usuario .................................................................................... 44

Symbols used on the instrument are:

F Caution: risk of electric shock
G Caution: refer to accompanying notes
t Equipment protected throughout by Double Insulation (Class II)
c Equipment complies with current EU directives.

3

Introduction

Thank you for purchasing the Megger AVO410 Digital Multimeter.
For your own safety and to get the maximum benefit from your instrument,
please ensure that you read and understand the safety warnings and
instructions before attempting to use the instrument.

The AVO410 is aimed at providing electricians with a rugged, easy to use
multimeter for field use. Functions include voltage, current and resistance; in
addition, there are extra functions that may also appeal to electrical and
electronic engineers. The instrument features automatic or manual selection of

ranges, True RMS readings and a CATIV 600 V safety rating.

Unpacking and inspection

Upon removing your new digital multimeter from its packing, you should have
the following items.

1. Digital multimeter.

2. Test lead set (one black, on red)

3. User manual.

4. Protective holster.

Symbols and annunciators

Continuity A
BAT Low battery

▲

Diode test
HOLD Data hold
AUTO Auto-ranging
AC Alternating current or voltage
DC Direct current or voltage
MAX/MIN Stores the highest or lowest measurement

J Backlight

V Volts
A, mA,uA Current range

4

Meter description

1. 6000 counts LCD display.

2. Push buttons for features

3. Selection switch

4. Input terminal for A current selection (Red)

5. Input terminal for all other functions (Red)

6. COM (Black) common or ground reference input terminal for all functions.

Features

1

2

3

6

5

4

5

Operation

AC VOLTAGE MEASUREMENTS

1. Set the function switch to the V AC position (AUTO, T-RMS and AC volts will
appear on the display).

2. Insert the black test lead in the COM jack and the red test lead into the V
jack.

3. Connect the test probe tips to the circuit under test.

4. Read the voltage on the display.

DC VOLTAGE MEASUREMENTS

1. Set the function switch to the V DC position (AUTO and DC volts will be
appear on the display).

2. Insert the black test lead into the COM jack and the red test lead into the V
jack.

3. Connect the test probe tips to the circuit under test. Be sure to observe the
correct polarity (red lead to positive, black lead to negative)

4. Read the voltage on the display. If the polarity is reversed, the display will
show (-) minus before the reading.

RESISTANCE (Ω) MEASUREMENTS

1. Set the function switch to the Ω position (AUTO and MΩ will appear on the
display).

2. In addition, O.L will be displayed indicating an open circuit.

3. Insert the black test lead into the COM jack and the red test lead into the Ω
jack.

4. Connect the test probe tips to the circuit under test.

5. According to measured value the reading will be in Ω, kΩ or MΩ.

Note: The AVO410 provides an open circuit voltage <-1.5 V to the circuit under
test which will cause transistor junctions to conduct so it is advisable to
disconnect the item to be tested from the circuit to obtain an accurate reading.

DIODE / CONTINUITY TESTS

WARNING: To avoid electric shock never test a diode or conduct a continuity
test on an energized circuit.

1. Set the function switch to the diode/continuity position. (The diode and V
symbols will appear).

2. In addition, .OL will be displayed indicating an open circuit.

3. Insert the black test lead into the COM jack and the red test lead into the Ω
jack.

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4. For continuity connect the test probes to the cable or circuit to be tested.
(Polarity is not important).

5. The AVO410 will emit a tone if continuity is below 500 Ω / .OL with no
tone will indicate either open circuit or continuity above 500 Ω.

6. For diode testing connect the test probe tips to the diode or semiconductor
junction and note the reading.

7. Reverse the probe polarity by switching probe position and note this
reading.

8. The diode or junction can be evaluated as follows:
a. If one reading shows a value and the other reading shows .OL, the
diode is good.
b. If both readings show .OL, the device is open circuit.
c. If both readings are very small or zero, the device is shorted.

DCµA MEASUREMENTS (6000 µA max.)

1. Set the function switch to the DCµA position. (AUTO and DCµA will be
displayed).

2. Insert the black test lead into the COM jack and the red test lead into the
µA jack.

3. Remove power from circuit under test, then open circuit at a convenient
point where current is to be measured.

4. Connect the black test probe to the negative side of the circuit. Connect
the red test probe to the positive side of the circuit.

5. Carefully apply the power

6. Read the measured on the display.

7. Remove supply before removing test leads and reconnecting circuit.

CAPACITANCE MEASUREMENTS

WARNING: To avoid damage to the instrument. Before testing, discharge the
capacitor/s to be tested.

1. Set the function switch to the capacitor position (AUTO and nF will be
appear on the display).

2. Insert the black test lead into the COM jack and the red test lead into the
capacitance jack.

3. Connect the test probe tips to the capacitor under test. Be sure to observe
the correct polarity if the capacitor is an electrolytic / polarised type. Red
to positive and black to negative.

4. Read the value on the display.

7

FREQUENCY MEASUREMENTS

1. Set the function switch to the Hz position (AUTO and Hz will appear on the
display).

2. Insert the black test lead in the COM jack and the red test lead into the Hz
jack.

3. Connect the test probe tips to the circuit under test.

4. Read the frequency on the display.

AC CURRENT MEASUREMENTS

1. Set the function switch to the AC A position. (AUTO, T-RMS and AC A will
appear on the display).

2. Insert the black test lead into the COM jack and the red test lead into the A
jack.

3. Remove power from circuit under test, then open circuit at a convenient
point where current is to be measured.

4. Connect the black test probe to the negative side of the circuit. Connect
the red test probe to the positive side of the circuit.

5. Carefully apply the power

6. Read the measured on the display.

7. Remove supply before removing test leads and reconnecting circuit.

DC CURRENT MEASUREMENTS

1. Set the function switch to the DC A position. (AUTO and DC A will appear
on the display).

2. Insert the black test lead into the COM jack and the red test lead into the A
jack.

3. Remove power from circuit under test, then open circuit at a convenient
point where current is to be measured.

4. Connect the black test probe to the negative side of the circuit. Connect
the red test probe to the positive side of the circuit.

5. Carefully apply the power

6. Read the measured on the display.

7. Remove supply before removing test leads and reconnecting circuit.

FEATURE BUTTONS

BACKLIGHT

The AVO410 has a backlit display for all the different functions which has an
auto off in 60 seconds.

8

MIN MAX

The MIN MAX function enables the user to display both a minimum
and a maximum measured reading. To activate, first select a function
and make a measurement. Press the MIN MAX button to store the
maximum reading. Should the value increase then the new value will
be stored. Pressing the MIN MAX button once more will switch the
instrument display to minimum reading.

Pressing the HOLD button while in MIN MAX mode will stop the
AVO410 updating the maximum and minimum displayed reading.
Holding down the MIN MAX button for >1 sec. will switch the
function off.

HOLD

Press the HOLD button to freeze the reading on the display. The MIN
MAX function is unavailable when the Hold is active.

RS-232

With an optional USB adapter and software the AVO410 can be
utilised with a computer to provide a virtual multimeter mode.

RANGE
When any of the individual functions are first selected the unit will
be in the auto ranging mode.

Each successive press of the range button will enable the operator to
manually choose a required range.

AUTO POWER OFF / DISABLE

If the meter is idle for more than 10 minutes, the meter automatically
turns the display off. During this off time the last reading on the
meter is stored. The AVO410 can be restored by pressing any button.
To disable the power off function simultaneously hold down the
MIN MAX, RS232 and Range buttons and switch instrument to
required function.

9

MAINTENANCE

To clean the instrument, do not immerse in water, periodically wipe the case
with a damp cloth and mild detergent. Dirt in the terminals may affect readings.
Remove the battery if the AVO410 is not to be used for a long period of time.

When the low battery symbol appears on the display, replace the battery.
To replace battery remove instrument from black boot and unscrew two
screws on battery cover to reveal battery.

An internal user replaceable fuse can be accessed for replacement by unscrewing
the four deep recess screws. Carefully separate the two halves of the tester
taking care of battery lead. Use only the recommended replacement fuse
(10 A 500 V 32 mm).

SPECIFICATIONS
General Specifications

Display: 6000 counts updates 1.5/sec.
Polarity indication: Automatic, positive implied, negative indicated
Overrange indication: “OL” or “-OL”

Low battery indication: Displayed when the battery voltage drops below

operating voltage

Auto power off: Approx 10 minutes
Operating ambient:
Non-condensing ≤10 °C, 11 °C ~ 30 °C (≤80% R.H)

31 °C ~ 40 °C (≤75% R.H), 41 °C ~ 50 °C (≤45%
R.H)

Storage temperature: -20 ºC to 60 ºC, 0 to 80% R.H. when battery removed
from meter

Temperature coefficient: 0.15 x (Spec.Acc’y) / ºC, <18 ºC or > 28 ºC
Power requirements: Standard 9V battery NEDA 1604, IEC6F22, JIS006P
Battery life: Alkaline 300 hours

Dimensions (W x H x D): 76 mm x 158 mm x 38 mm without

holster
82 mm x 164 mm x 44 mm with holster
Weight: 522 g

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ELECTRICAL SPECIFICATIONS

Accuracy is ± (% reading + number of digits) at 23 ºC ±5 ºC, less than 80% R.H

DC/AC volts

Range DC accuracy AC accuracy

600.0 mV

6.000

60.00 V

± (0.5% + 2 digits)

600.0 V
DC 1000 V/AC 750 V

Over voltage protection: DC 1000 V or AC
Input impedance: 10 MΩ // less than 100 pF

CMRR/NMRR
(Common mode rejection ration/normal mode rejection ratio)

VAC: CMRR >60 dB at DC, 50 Hz/60 Hz
VDC: CMRR >100 dB at DC, 50 Hz/60 Hz
NMRR >50 dB at DC, 50 Hz/60 Hz

AC conversion type:

AC conversions are AC coupled True RMS responding, calibrated to the sine
wave input.

*1
The basic accuracy is specified for a sine wave below 4000 counts. Over 4000
counts, add 0.6% to the accuracy. For non-sine waves below 2000 counts, refer
to the following for accuracy:

±1.5% addition error for C.F from1.4 to 3

Crest factor: C.F. = Peak/rms

DC/AC current
Range DC accuracy AC accuracy Voltage burden

600.0 µA
6000 µA

6.000 A

± (1.0% + 2 digits)

10.00 A

50 Hz/60 Hz sine wave
only for 600.0 mV range,
± (0.9% + 5 digits) 50 Hz
~ 500 Hz
*1

N/A

±(1.5% +6 dgt)
50 Hz ~ 500 Hz
*1

<4 mV/µA

2 V max

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Overload protection
A input: 10 A (500 V) fast blow fuse
µA input: 600 V rms

*1

AC conversion type:

Conversion type and additional specification are the same as DC/AC voltage

Resistance

Range Accuracy Overload protection

600.0 Ω *2

6.000 KΩ

60.00 KΩ

600.0 KΩ

± (0.7% + 2 digits)

600 V rms

6.000 MΩ ± (1.0% + 2 digits)

60.00 MΩ *1 ± (1.5% + 2 digits)

Open circuit voltage: -1.3 V approx.
*1 <100 digit rolling
*2 <10 digit rolling

Diode check and continuity
Range Resolution Accuracy

▲

10 mV ± (1.5% + digits*)
* For 0.4 V ~ 0.8 V

Max. test current: 1.5 mA
Max. open circuit voltage: 3 V
Overload protection: 600 V rms
Continuity: Built-in buzzer will sound when the

resistance is less than 500 Ω approx.
Response time is 100 ms approx.

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Frequency
Range **Sensitivity Overload protection

6000 Hz

60.00 KHz

600.0 KHz

6.000 MHz 250 mV rms

60.00 MHz 1 V rms

Overload protection: 600 V rms
* Less than 20 Hz, the sensitivity is 1.5 V rms
** Max. sensitivity: <5 V ac rms

Capacitance
Range Accuracy

6.000 nF

60.00 nF

600.0 nF

6.000 µF

60.00 µF

600.0 µF

6.00 mF*

Overload protection: 600 V rms
* <100 digit of reading rolling

Auto power off (APO): If idle for more than 10 minutes

100 mV rms

*

± (1.9%) +8 digits)

Frequency:

0.1% ±1 digit

ACCESSORIES

Battery (installed)
Test leads
User manual

13

REPAIR AND WARRANTY

The instrument contains static sensitive devices, and care must be taken in
handling the printed circuit board. If an instrument’s protection has been
impaired it should not be used, but sent for repair by suitably trained and
qualified personnel. The protection is likely to be impaired if for example; it
shows visible damage; fails to perform the intended measurements; has been
subjected to prolonged storage under unfavourable conditions, or has been
subjected to severe transport stresses.

Note: Any unauthorised prior repair or adjustment will automatically
invalidate the warranty.

INSTRUMENT REPAIR AND SPARE PARTS

For service requirements for Megger instruments contact:
Megger Limited or Megger
Archcliffe Road Valley Forge Corporate Centre
Dover 2621 Van Buren Avenue
Kent CT17 9EN Norristown PA 19403 England. U.S.A.
Tel: [phone] Tel: [phone]
Fax: [phone] Fax: [phone]

or an approved repair company.

Returning and Instrument for Repair

If it is necessary to retun an instrument for repair, a Returns Authorisation
number must first be obtained by contacting one of the addresses shown. You
will be asked to provide key information, such as the instrument serial number
and fault reported when the number is issued. This will enable the Service
Department to prepare in advance for the receipt of your instrument, and to
provide the best possible service to you.

The Returns Authorisation number should be clearly marked on the outside
of the product packaging, and on any related correspondence. The instrument
should be sent, freight paid to the appropriate address. If appropriate a copies
of the original purchase invoice and of the packing note, should be sent
simultaneously by airmail to expedite clearance through customs.
For instruments requiring repair outside the warranty period a repair estimate
will be submitted to the sender, if required, before work on the instrument
commences.

14

Approved Repair Companies

A number of independent instrument repair companies have been authorised
for repair work on most Megger instruments, using genuine Megger spare
parts. A list of approved companies is available from the UK address shown.

15

Il est impératif de lire et comprendre les avertissements de sécurité avant

G AVERTISSEMENTS DE SECURITE

d’utiliser l’instrument. Pour assurer une sécurité individuelle maximum
pendant le fonctionnement de cet instrument de mesure, il faut observer
rigoureusement les informations de sécurité ci-après :

■ Ne pas l’utiliser dans des environnements humides.

■ Ne pas tenter de mesurer au-delà du maximum de la gamme sélectionnée.

■ Apporter un soin extrême en mesurant des valeurs au-dessus de 50 V,

particulièrement sur les barres omnibus de phase.

■ Pour mesurer la tension, l’instrument ne doit pas être commuté sur une

gamme de mesure de courant ou de résistance, ou sur le contrôle de diode
ou sur la position vibreur.

■ Les circuits doivent être hors tension et isolés avant d’effectuer les tests de

résistance.

■ Le sélecteur rotatif ne doit être tourné qu’après le retrait des connexions de

test.

■ Toutes les tensions externes doivent être déconnectées de l’instrument

avant d’enlever la batterie.

■ Les cordons de test et les pointes de touche doivent être dans le bon ordre,

propres, et sans isolation cassée ou craquelée.

■ Les autorités du Royaume Uni pour la sécurité, recommandent l’utilisation

de cordons de test équipés de fusibles pour la mesure de tension sur les
systèmes de haute énergie.

■ Les fusibles de remplacement doivent être de type et de caractéristiques

nominales correctes.

■ L’instrument ne doit pas être utilisé si l’une de ses parties est endommagée.

■ Vérifier le fonctionnement correct de l’instrument en testant une tension

connue, avant et après usage. Ne pas l’utiliser si des résultats fallacieux sont
obtenus.

■ Les avertissements et les précautions doivent être lus et compris avant qu’un

instrument soit utilisé. Ils doivent être observés pendant le fonctionnement
de cet instrument.

Cet instrument ne doit être utilisé que par des personnes convenablement

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qualifiées et compétentes

Note

Les symboles utilisés sur l’instrument sont :

F Attention : Risque de choc électrique
G Attention: se reporter aux notes d’accompagnement
t Équipement protégé partout par double isolement (Classe II)
c L’équipement est conforme aux directives EU actuelles.

Introduction

Merci pour l’achat du multimètre numérique Megger AVO410.
Pour votre propre sécurité et pour obtenir l’avantage maximum de votre
instrument, faites le nécessaire pour lire et comprendre les avertissements et les
instructions de sécurité avant d’essayer d’utiliser l’instrument.

L’AVO410 a été conçu pour fournir aux électriciens un multimètre de chantier,
robuste et facile d’emploi. Les fonctions incluent la tension, le courant et la
résistance ; en outre, il y a des fonctions supplémentaires qui peuvent égale­ment faire appel aux ingénieurs électriciens et électroniciens. L’instrument
comporte la sélection automatique ou manuelle des gammes, des lectures RMS
(valeurs efficaces) vraies et une valeur nominale de sécurité CATIV 600 V.

Déballage et inspection

En retirant votre nouveau multimètre numérique de son emballage, vous devez
trouver les articles suivants.

1. Multimètre numérique.

2. Un jeu de cordon de test (un noir, un rouge)

3. Un guide d’utilisation

4. Un étui protecteur.

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