Rigol DM3068 Manuel utilisateur

RIGOL

User’s Guide

DM3068 Digital Multimeter

Dec. 2010

RIGOL Technologies, Inc.

RIGOL

User’s Guide for DM3068

Guaranty and Declaration

Trademark Information

RIGOL is a registered trademark of RIGOL Technologies, Inc.

Publication Number

UGC06102-1110

Notices

RIGOL products are protected by patent law in and outside of P.R.C.

RIGOL reserves the right to modify or change parts of or all the

specifications and pricing policies at company’s sole decision.

Information in this publication replaces all previously corresponding material.

RIGOL shall not be liable for losses caused by either incidental or

consequential in connection with the furnishing, use or performance of this

manual as well as any information contained.

Any part of this document is forbidden to copy or photocopy or rearrange

without prior written approval of RIGOL.

Product Certification

RIGOL guarantees this product conforms to the national and industrial standards

in China. International standard conformance certification is in progress.

If you have any problem or requirement when using our products, please contact

RIGOL or your local distributors, or visit: www.rigol.com

RIGOL

User’s Guide for DM3068

Safety Requirement

General Safety Summary

Please review the following safety precautions carefully before putting the

instrument into operation so as to avoid any personal injuries or damages to the

instrument and any product connected to it. To prevent potential hazards, please

use the instrument only specified by this manual.

Use Proper Power Cord.

Only the power cord designed for the instrument and authorized by local country

could be used.

Ground The Instrument.

The instrument is grounded through the Protective Earth lead of the power cord.

To avoid electric shock, it is essential to connect the earth terminal of power cord

to the Protective Earth terminal before any inputs or outputs.

Observe All Terminal Ratings.

To avoid fire or shock hazard, observe all ratings and markers on the instrument

and check your manual for more information about ratings before connecting.

Use Proper Overvoltage Protection.

Make sure that no overvoltage (such as that caused by a thunderstorm) can reach

the product, or else the operator might expose to danger of electrical shock.

Do Not Operate Without Covers.

Do not operate the instrument with covers or panels removed.

Use Proper Fuse.

Please use the specified fuses.

Avoid Circuit or Wire Exposure.

Do not touch exposed junctions and components when the unit is powered.

RIGOL

User’s Guide of DM3068

III

Do Not Operate With Suspected Failures.

If you suspect damage occurs to the instrument, have it inspected by qualified

service personnel before further operations. Any maintenance, adjustment or

replacement especially to circuits or accessories must be performed by RIGOL

authorized personnel.

Keep Well Ventilation.

Inadequate ventilation may cause increasing of temperature or damages to the

device. So please keep well ventilated and inspect the intake and fan regularly.

Do Not Operate in Wet Conditions.

In order to avoid short circuiting to the interior of the device or electric shock,

please do not operate in a humid environment.

Do Not Operate in an Explosive Atmosphere.

In order to avoid damages to the device or personal injuries, it is important to

operate the device away from an explosive atmosphere.

Keep Product Surfaces Clean and Dry.

To avoid the influence of dust and/or moisture in air, please keep the surface of

device clean and dry.

Electrostatic Prevention.

Operate in an electrostatic discharge protective area environment to avoid

damages induced by static discharges. Always ground both the internal and

external conductors of the cable to release static before connecting.

Handling Safety

Please handle with care during transportation to avoid damages to keys, knob and,

interfaces as well as other parts on the panels.

The disturbance tests of all models conform to the P/F values of A based

on the standard of EN 61326: 1997+A1+A2+A3 instead of P/F values of

RIGOL

User’s Guide for DM3068

Input Terminal Protection Limit

The protection limit applies to input terminals:

1．Main input (HI and LO) terminals

HI and LO terminals are used for Voltage, Resistance, Capacitance,

Continuity, Frequency and Diodes measurements and should be used under

the following two conditions:

1) HI-LO protection limit: at most 1000 VDC or 750 VAC, this is also the

maximum measurable voltage. The limit can be expressed as 1000 Vpk.

2) LO-ground protection limit: at most 500 Vpk (relative) is allowed to float

at LO terminal with safety.

Since the HI terminal holds a maximum protection of 1000 Vpk relative to the

ground, the sum of the “float”and measured voltages cannot exceed 1000

Vpk.

2．Sampling (HI Sense and LO Sense/200 mA) terminals

HI Sense and LO Sense/200 mA terminals are used for 4-Wire Resistance

measurement and should be used under the following two conditions:

1) HI Sense-LO Sense/200 mA protection limit: 200 Vpk.

2) LO Sense/200 mA-LO protection limits: 0.5 Vpk. The current input fuse

on the rear panel provides the current passing through LO Sense/200

mA up to 500 mA protection.

3．Current input (10 A and Sense/200 mA) terminals

10 A and LO terminals are used for current measurements of 2 A and 10 A.

The maximum current which goes through the 10 A terminal is limited to 10

A by the internal fuse. LO Sense/200 mA and LO terminals are used for

current measurements ranging from 200 A to 200 mA. The maximum

current which go through the LO Sense/200 mA terminal is limited to 500

mA by the internal fuse.

NOTE:

In order to prevent the fuse from blowing out and protect the

multimeter, please use the current input terminals according to the

following requirements:

1) Do not connect the 10 A and LO Sense/200 mA input terminals into

the current measuring circuit at the same time.

RIGOL

User’s Guide of DM3068

2) Only use 10 A and LO terminals for measurements when the measured

current AC+DC RMS value goes within 200 mA and 10 A.

3) Select a proper current input terminal according to the estimated current

magnitude before connect the multimeter to AC supplies if you want to

use current measurement.

4) The current into 10 A cannot exceed 13.5 A, otherwise it will blow out

the internal fuse; while the current into the LO Sense/200 mA terminal

cannot exceed 650 mA, otherwise the current fuse from the rear panel

may be blown out.

IEC II Overvoltage Protection

In order to prevent electric shock, DM3068 provides overvoltage protection for

line-voltage mains connections meeting both of the following conditions:

1．The HI and LO input terminals are connected to the mains under

Measurement Category II conditions, defined below.

2．The mains are limited to a maximum line voltage of 300 VAC.

WARNING: IEC II includes electrical devices connected to mains at an outlet on a

branch circuit. Such devices include most small appliances, test equipments and

other devices that inserted into a branch socket.

DM3068 may be used to make measurements with the HI and LO inputs connected

to mains in such devices (up to 300 VAC), or to the branch socket itself. However,

DM3068 may be used with its HI and LO inputs connected to mains from neither

permanently installed electrical device such as a main circuit-breaker panel,

sub-panel disconnected box nor wired motors. Such devices and circuits are readily

to beyond the protection from DM3068.

NOTE: Voltages above 300 VAC may be measured only in circuits that are isolated

from mains. However, a transient overvoltage is also present in such circuits.

DM3068 was designed to safely withstand occasional transient overvoltage up to

2500 Vpk. Do not use this device to measure circuits whose transient overvoltage

may exceed this level.

RIGOL

User’s Guide for DM3068

Safety Terms and Symbols

Terms in this Manual. These terms may appear in this manual:

WARNING

Warning statements indicate the conditions or practices that could result in

injury or loss of life.

CAUTION

Caution statements indicate the conditions or practices that could result in

damage to this product or other property.

CAT I (1000V)

IEC Measurement Category I. The maximum voltage can be measured by

HI-LO terminal is 1000Vpk.

CAT II (300V)

IEC Measurement Category II. Inputs may be connected to mains (up to

300VAC) in the case of overvoltage in Category II.

Terms on the Product. These terms may appear on the product:

DANGER indicates an injury or hazard may immediately happen.

WARNING indicates an injury or hazard may be accessible potentially.

CAUTION indicates a potential damage to the instrument or other property

might occur.

Symbols on the Product. These symbols may appear on the product:

Hazardous

Voltage

Refer to

Instructions

Protective

Earth

Terminal

Chassis

Ground

Test

Ground

RIGOL

User’s Guide of DM3068

VII

General Care and Cleaning

General Care:

Do not store or leave the instrument in where the instrument will be exposed to

direct sunlight for long periods of time.

Cleaning:

Clean the instrument regularly according to its operating conditions. To clean the

exterior surface, perform the following steps:

1. Disconnect the instrument from all power sources.

2. Clean the loose dust on the outside of the instrument with a lint- free cloth

(with a mild detergent and water). When clean the LCD, take care to avoid

scarifying it.

CAUTION

To avoid damages to the instrument, do not expose them to liquids which

are corrosive.

WARNING

To avoid injury resulting from short circuit, make sure the instrument is

completely dry before reconnecting into a power source.

RIGOL

User’s Guide for DM3068

VIII

Environmental Considerations

The following symbol indicates that this product complies with the applicable

European Union requirements according to Directives 2002/96/EC on waste electrical

and electronic equipment (WEEE) and batteries.

Product End-of-Life Handling

The equipment may contain substances that could be harmful to the environment or

human health. In order to avoid release of such substances into the environment and

harmful to human health, we encourage you to recycle this product in an appropriate

system that will ensure that most of the materials are reused or recycled

appropriately. Please contact your local authorities for disposal or recycling

information.

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