NF DM2571 Manuale utente

NF Corporation

DIGITAL MULTIMETER

DM2571

USER MANUAL

DA00078064-002

DIGITAL MULTIMETER

DM2571

USER MANUAL

ISO-9001 CERTIFIED MANUFACTURER

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 NF Corporation.

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

However, NF continues to improve products and reserves the right to

change specifications, equipment, and maintenance procedures at

any time without notice.

Table of Contents

SAFETY INSTRUCTIONS...................................................3

Safety Symbols....................................................................... 3

Safety Guidelines ................................................................... 4

GETTING STARTED ...........................................................7

Characteristics........................................................................ 8

Front Panel Overview.............................................................. 10

Rear Panel Overview .............................................................. 15

Status Bar .............................................................................. 18

Set Up.................................................................................... 21

BASIC MEASUREMENT...................................................23

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

AC/DC Voltage Measurement.................................................. 27

AC/DC Current Measurement.................................................. 34

2W/4W Resistance Measurement ............................................ 38

Continuity Test........................................................................ 41

Diode Measurement................................................................ 44

Frequency/Period Measurement.............................................. 45

Capacitance Measurement...................................................... 50

Temperature Measurement...................................................... 53

DUAL MEASUREMENT....................................................63

Dual Measurement.................................................................. 64

ADVANCED MEASUREMENT..........................................73

Advanced Measurement Overview........................................... 74

Relative Value Measurement................................................... 75

Hold Measurement.................................................................. 77

Trigger Setting........................................................................ 80

Filter Setting........................................................................... 86

Math Measurement ................................................................. 89

DIGITAL I/O .....................................................................113

Digital I/O Overview................................................................ 114

Application: Compare Mode .................................................... 116

Application: 4094 / User Mode................................................. 123

Application: External Trigger ................................................... 131

DM2571 User Manual

SYSTEM & FIRMWARE..................................................133

View System Info ....................................................................134

Firmware Update.....................................................................135

MENU SETTING .............................................................137

Configure System....................................................................138

Configure Display....................................................................153

SCREENSHOT & LOG...................................................173

Capture...................................................................................174

Save Reading .........................................................................177

DISPLAY SETTING.........................................................181

Digit........................................................................................182

Display ...................................................................................184

REMOTE CONTROL ......................................................203

Configure Interface ................................................................. 204

Web Control Interface .............................................................236

Command Syntax....................................................................241

Command Set .........................................................................244

Status system .........................................................................330

APPENDIX......................................................................334

Fuse Replacement ..................................................................335

Factory Default Parameters .....................................................338

Specifications..........................................................................342

EMC and Safety ......................................................................357

SAFETY INSTRUCTIONS

This chapter contains important safety instructions that

you must follow when operating the DM2571 and when

keeping it in storage. Read the following before any

operation to insure your safety and to keep the DM2571

in the best possible condition.

Safety Symbols

These safety symbols may appear in this manual or on the DM2571.

WARNING

Warning: This contains information to avoid risks in

equipment handling that could result in loss of life or

bodily injury.

CAUTION

Caution: This contains information to avoid risks in

equipment handling that could result in minor or

moderate injury to person or damage to property or the

equipment.

DANGER High Voltage

Attention 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.

DM2571 User Manual

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 instrument.

•Avoid severe impact or rough handling that can lead to

damaging the instrument.

•Do not discharge static electricity to the instrument.

•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 instrument unless you are

qualified as service personnel.

•Make sure that the Sense LO terminal to Input LO is

limited to 2Vpk, the Sense HI to Sense LO terminals

are limited to 200Vpk and the Input LO to earth is

limited to 500Vpk.

(Note) EN61010-2-030:2010 specifies the measurement categories

and their requirements as follows. The DM2571 falls under

category II 300V.

•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.

Power Supply

WARNING

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

50Hz / 60Hz / 400Hz ±10%

•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.

SAFETY INSTRUCTIONS

WARNING

•Due to the fact that the Front/Rear Input Switch on

the front panel is not proposed as an active

multiplexer, do Not change the input switch when

signals are present on either rear or front set of

terminals. Intrument damage and risk of electric shock

may occur if switching the input switch when high

voltage or current is present.

Fuse

WARNING

•Fuse type: T0.25A 100/120 VAC

T0.125A 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

Instrument

•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

product.

•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:

< 30°C: < 80%RH (non-condensing)

30°C to 40°C: <70%RH (non-condensing)

>40°C: <50%RH (non-condensing)

•Altitude: <2000m

DM2571 User Manual

(Note) EN 61010-1:2010 specifies the pollution degrees and their

requirements as follows. The DM2571 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

•Humidity: <90%RH(non-condensing)

Disposal

Do not dispose this instrument as unsorted municipal

waste. 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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