GW Instek GDM-8261 Manual de usuario

Dual Measurement Multimeter

GDM-8261

USER MANUAL

GW INSTEK PART NO. 82DM-82610EA1

ISO-9001 CERTIFIED MANUFACTURER

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This manual contains proprietary information, which is protected by

copyrights. All rights are reserved. No part of this manual may be

photocopied, reproduced or translated to another language without

prior written consent of Good Will company.

The information in this manual was correct at the time of printing.

However, Good Will continues to improve products and reserves

the right to change specifications, equipment, and maintenance

procedures at any time without notice.

Good Will Instrument Co., Ltd.

No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan (R.O.C.).

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Table of Contents

SAFETY INSTRUCTIONS ....................................................6

Safety Symbols....................................................6

Safety Guidelines ................................................7

GETTING STARTED..........................................................10

GDM-8261 Characteristics ................................ 11

Front Panel Overview ........................................ 12

Rear Panel Overview ......................................... 17

Set Up ............................................................... 19

BASIC MEASUREMENT....................................................22

Basic Measurement Overview........................... 24

AC/DC Voltage Measurement ........................... 26

AC/DC Current Measurement ........................... 30

2W/4W Resistance Measurement ..................... 32

Diode Test ......................................................... 34

Continuity Test .................................................. 35

Frequency/Period Measurement ....................... 38

Temperature Measurement ............................... 40

DUAL MEASUREMENT ....................................................46

Dual Measurement ........................................... 46

ADVANCED MEASUREMENT ...........................................52

Advanced Measurement Overview .................... 53

dBm/dB Measurement...................................... 55

Max/Min Measurement..................................... 57

Relative Value Measurement............................. 58

Hold Measurement ........................................... 60

Compare Measurement..................................... 61

Math Measurement........................................... 64

SYSTEM/DISPLAY CONFIGURATION ..............................70

Refresh Rate Setting.......................................... 71

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GDM-8261 User Manual

View Serial Number...........................................71

Trigger Setting...................................................72

Digital Filter Setting..........................................75

Display Setting ..................................................77

Measurement Configuration Settings ...............78

ADC Setting.......................................................83

Frequency / Period Settings ..............................87

STORE/RECALL ............................................................... 90

Store Measurement Record...............................91

Recall Measurement Record..............................92

Save Instrument Settings ..................................93

Recall Instrument Settings................................94

SCANNER (OPTIONAL) .................................................. 96

GDM-SC1 Scanner Specifications .....................97

Scanner Installation ..........................................97

Setup Scan ...................................................... 104

Run Scan ......................................................... 111

DIGITAL I/O ...................................................................114

Digital I/O Terminal Configuration ................. 115

REMOTE CONTROL .......................................................121

Configure Interface.......................................... 122

Command Syntax ............................................ 132

Command Set.................................................. 133

FAQ ................................................................................176

APPENDIX ......................................................................177

Firmware Version ............................................ 178

Fuse Replacement ........................................... 179

Menu Tree ....................................................... 181

Specifications .................................................. 183

EC Declaration of Conformity.......................... 192

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Table of Contents

INDEX ............................................................................193

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GDM-8261 User Manual

SAFETY INSTRUCTIONS

This chapter contains important safety instructions that

you must follow when operating the GDM-8261 and

when keeping it in storage. Read the following before any

operation to insure your safety and to keep the

GDM-8261 in the best possible condition.

Safety Symbols

These safety symbols may appear in this manual or on the GDM-8261.

WARNING

arning: Identifies conditions or practices that could

result in injury or loss of life.

CAUTION

Caution: Identifies conditions or practices that could

result in damage to the GDM-8261 or to other property.

DANGER High Voltage

ttention Refer to the Manual

Protective Conductor Terminal

Earth (ground) Terminal

Do not dispose electronic equipment as unsorted

municipal waste. Please use a separate collection facility

or contact the supplier from which this instrument was

purchased.

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SAFETY INSTRUCTIONS

Safety Guidelines

General Guideline

CAUTION

Make sure that the voltage input level does not exceed

DC1000V/AC750V.

Make sure the current input level does not exceed 10A.

Do not place any heavy object on the GDM-8261.

Avoid severe impact or rough handling that can lead to

damaging the GDM-8261.

Do not discharge static electricity to the GDM-8261.

Use only mating connectors, not bare wires, for the

terminals.

Do not block or obstruct the cooling fan vent opening.

Do not perform measurement at the source of a

low-voltage installation or at building installations

(Note below).

Do not disassemble the GDM-8261 unless you are

qualified as service personnel.

(Note) EN 61010-1:2001 specifies the measurement categories and

their requirements as follows. The GDM-8261 falls under category

I or II.

Measurement category IV is for measurement performed at the

source of low-voltage installation.

Measurement category III is for measurement performed in the

building installation.

Measurement category II is for measurement performed on the

circuits directly connected to the low voltage installation.

Measurement category I is for measurements performed on circuits

not directly connected to Mains.

Power Supply

WARNING

AC Input voltage: 100/120/220/240 V AC ±10%,

45Hz to 66Hz / 360Hz to 440Hz

The power supply voltage should not fluctuate more

than 10%.

Connect the protective grounding conductor of the

AC power cord to an earth ground, to avoid electrical

shock.

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GDM-8261 User Manual

Fuse

WARNING

Fuse type: 0.315AT 100/120VAC

0.125AT 220/240 VAC

Make sure the correct type of fuse is installed before

power up.

To avoid risk of fire, replace the fuse only with the

specified type and rating.

Disconnect the power cord before fuse replacement.

Make sure the cause of a fuse blowout is fixed before

fuse replacement.

Cleaning the

GDM-8261

Disconnect the power cord before cleaning.

Use a soft cloth dampened in a solution of mild

detergent and water. Do not spray any liquid into the

GDM-8261.

Do not use chemicals or cleaners containing harsh

material such as benzene, toluene, xylene, and acetone.

Operation

Environment

Location: Indoor, no direct sunlight, dust free, almost

non-conductive pollution (Note below)

Temperature: Full accuracy for 0°C to 55°C.

Humidity: Full accuracy to 80% RH at 40°C

(Note) EN 61010-1:2001 specifies the pollution degrees and their

requirements as follows. The GDM-8261 falls under degree 2.

Pollution refers to “addition of foreign matter, solid, liquid, or

gaseous (ionized gases), that may produce a reduction of dielectric

strength or surface resistivity”.

Pollution degree 1: No pollution or only dry, non-conductive pollution

occurs. The pollution has no influence.

Pollution degree 2: Normally only non-conductive pollution occurs.

Occasionally, however, a temporary conductivity caused by

condensation must be expected.

Pollution degree 3: Conductive pollution occurs, or dry,

non-conductive pollution occurs which becomes conductive due to

condensation which is expected. In such conditions, equipment is

normally protected against exposure to direct sunlight, precipitation,

and full wind pressure, but neither temperature nor humidity is

controlled.

Storage

Environment

Location: Indoor

Temperature: 40°C to 70°C

Disposal

Do not dispose this instrument as unsorted municipal

aste. Please use a separate collection facility or contact

the supplier from which this instrument was purchased.

Please make sure discarded electrical waste is properly

recycled to reduce environmental impact.

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SAFETY INSTRUCTIONS

Power cord for the United Kingdom

When using the GDM-8261 in the United Kingdom, make sure the power

cord meets the following safety instructions.

NOTE: This lead / appliance must only be wired by competent persons

WARNING: THIS APPLIANCE MUST BE EARTHED

IMPORTANT: The wires in this lead are coloured in accordance with the

following code:

Green/ Yellow: Earth

Blue: Neutral

Brown: Live (Phase)

As the colours of the wires in main leads may not correspond with the

coloured marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth

terminal marked with either the letter E, the earth symbol or coloured

Green/Green & Yellow.

The wire which is coloured Blue must be connected to the terminal which is

marked with the letter N or coloured Blue or Black.

The wire which is coloured Brown must be connected to the terminal marked

with the letter L or P or coloured Brown or Red.

If in doubt, consult the instructions provided with the equipment or contact

the supplier.

This cable/appliance should be protected by a suitably rated and approved

HBC mains fuse: refer to the rating information on the equipment and/or

user instructions for details. As a guide, a cable of 0.75mm2should be

protected by a 3A or 5A fuse. Larger conductors would normally require 13A

types, depending on the connection method used.

Any exposed wiring from a cable, plug or connection that is engaged in a live

socket is extremely hazardous. If a cable or plug is deemed hazardous, turn

off the mains power and remove the cable, any fuses and fuse assemblies. All

hazardous wiring must be immediately destroyed and replaced in accordance

to the above standard.

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GDM-8261 User Manual

GETTING STARTED

This chapter describes the GDM-8261 in a nutshell,

including an Overview of its main features and front /

rear panel introduction. After going through the

Overview, follow the Power-up sequence to properly

setup the GDM-8261.

Please note the information in this manual was correct at

the time of printing. However as GW Instek continues

to improve its products, changes can occur at any time

without notice. Please see the GW Instek website for the

latest information and content.

Characteristics GDM-8261 Characteristics..................................... 11

Panel Overview Front Panel Overview............................................. 12

Measurement Keys (upper row)............................. 13

Measurement Keys (lower row) ............................. 15

Rear Panel Overview .............................................. 17

Setup Tilt Stand ............................................................... 19

Power Up ............................................................... 20

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