Amprobe 34XR-A Manuel utilisateur

Supplement

Title: 34XR-A Users Supplement Issue: 2

Part Number: 2728939 Issue Date: 9/06

Print Date: July 2006 Page Count: 1

Revision/Date:

This supplement contains information

necessary to ensure the accuracy of the

above manual.

34XR-A Users Supplement

9/06 1

Change #1

On page 9, under General Specification, change

Operating environment:

From: 0 ºC to 50 ºC at <70% R.H.

To: 0 ºC to 50 ºC at <70% R.H. for all functions

except 10A ranges

10A ranges: 0 ºC to 40 ºC at <70% R.H.

Change #2

On page 9, following Operating environment add:

10A Ranges: 0 ºC to 40 ºC at < 70 % R.H.

On page 10, under AC CURRENT, following Crest

Factor add the following:

Specified From: 10 % to 100% of range

On page 11, under FREQUENCY change:

From: Range: 4K, 40K, 400K 4M, 40MHz

To: Range: 4K, 40K, 400K, 1 MHz

Under Sensitivity, change the following and delete,

4 MHz to 40 MHz: >2 V ac rms, <5 V ac rms

From: 10 Hz 4 MHz: >1.5 V acrms

To: 10 Hz to 1 MHz: >2.5 V ac rms

From: Minimum pulse width: > 25 ns

To: Minimum pulse width: > 1 µs

CMY

pn2728939_cover_press.pdf 8/23/2006 3:45:55 PM

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MADE IN TAIWAN

PATENTS PENDING

www.amprobe.com

34XR-A

Professional Digital Multimeter

Users Manual

•Mode d’emploi

•Bedienungshandbuch

•Manuale d’Uso

•Manual de uso

PN 2728939

July 2006

©Amprobe©Test Tools.

34XR-A Digital Multimeter

Contents

Safety Information ...........................................................................................2

Introduction.....................................................................................................3

Making Measurements.....................................................................................3

Verify Instrument Operation..........................................................................3

Range Selection............................................................................................3

Correcting an Overload (o) Indication .........................................................3

Measuring DC Voltage ........................................... See Figure -1- ...............3

Measuring AC Voltage (True rms)............... See Figures -2- & -3- ...............4

Preparing for Current Measurements............................................................4

Measuring DC Current ........................................... See Figure -4- ...............4

Measuring AC Current (True rms)............... See Figures -3- & -5- ...............4

Measuring Resistance ........................................... See Figure -6- ...............5

Measuring Continuity............................................. See Figure -7- ...............5

Checking Diodes.................................................... See Figure -8- ...............5

Measuring Capacitance ......................................... See Figure -9- ...............5

Measuring Temperature ...................................... See Figure -10- ...............5

Measuring Frequency .......................................... See Figure -11- ...............6

Measuring Dutycycle .......................................... See Figure -12- ...............6

Additional Features ..........................................................................................6

Input Test Lead Warning...............................................................................6

True-rms Measurements ..............................................................................6

MIN MAX Measurements..............................................................................6

Auto Power Off .............................................................................................7

HOLD Measurements....................................................................................7

Backlight.......................................................................................................7

Product Maintenance.......................................................................................7

Battery and Fuse Replacement............................. See Figure -13- ...............7

Repair ..............................................................................................................8

WARRANTY..................................................................................................9

Specifications ..................................................................................................9

Users Manual

Safety Information

•The 34XR-A Digital Multimeter is UL, cUL, and EN61010-1 certified for

Installation Category III – 600V and Category II – 1000V. It is recommended for

use with local level power distribution, appliances, portable equipment, etc,

where only smaller transient overvoltages may occur, and not for primary

supply lines, overhead lines and cable systems.

•Do not exceed the maximum overload limits per function (see specifications)

nor the limits marked on the instrument itself. Never apply more than 1000V

dc/750 V ac rms between the test lead and earth ground.

•Inspect the DMM, test leads and accessories before every use. Do not use any

damaged part.

•Never ground yourself when taking measurements. Do not touch exposed

circuit elements or test probe tips.

•Do not operate the instrument in an explosive atmosphere.

•Exercise extreme caution when: measuring voltage >20V // current >10mA // AC

power line with inductive loads // AC power line during electrical storms //

current, when the fuse blows in a circuit with open circuit voltage >1000 V //

servicing CRT equipment.

•Always measure current in series with the load – NEVER ACROSS a voltage

source. Check fuse first. Never replace a fuse with one of a different rating.

•Remove test leads before opening the Battery Cover or case.

Symbols Used in this Manual

B Battery WRefer to the manual

TDouble insulated XDangerous Voltage

FDirect Current JEarth Ground

BAlternating Current RAudible tone

P Complies with EU directives

I Fuse >

Underwriters

Laboratories, Inc

Introduction

The 34XR-A is a True rms autoranging handheld digital multimeter for measuring

or testing the following:

•DC and AC voltage •Temperature

•DC and AC current •Capacitance

•Resistance •Diodes

•Frequency •Continuity

•Dutycycle

Additional features include: MIN MAX, HOLD, Backlight, and Range Lock

Making Measurements

Verify Instrument Operation

Before attempting to make a measurement, verify that the instrument is operational

and the battery is good. If the instrument is not operational, have it repaired before

attempting to make a measurement.

Range Selection

In addition to autoranging the 34XR-A allows you to manually select and lock a

range by pressing the RANGE button. RANGE appears on the display to indicate

that manual ranging is active. Each subsequent press of the range button steps the

meter to the next higher range. When the highest range is reached the next press

returns the meter to the lowest range. To return to autoranging press and hold the

RANGE button for 2 seconds. RANGE no longer shows on the display.

Use autorange for all initial measurements. Then, when appropriate, use the RANGE

button to select and lock a range. Warning

To avoid electrical shock while manual ranging use the display

annunciators to identify the actual range selected.

Correcting an Overload (oor -o ) Indication W

An oindication may appear on the display to indicate that an overload condition

exists. For voltage and current measurements, an overload should be immediately

corrected by selecting a higher range. If the highest range setting does not

eliminate the overload, interrupt the measurement until the problem is identified

and eliminated. The oindication is normal for some functions; for example,

resistance, continuity, and diode test.

Measuring DC Voltage See Figure -1-

1. Set the Function Switch to v.

2. If RANGE is displayed, press the RANGE button to enable autoranging.

3. Connect the Test Leads: Red to E, Black to COM

4. Connect the Test Probes to the circuit test points.

5. Read the display, and, if necessary, correct any overload (o) conditions.

Measuring AC Voltage (True rms) See Figures -2- & -3-

See Additional Features to find out the advantages of true rms.

1. Set the Function Switch to V.

2. If RANGE is displayed, press the RANGE button to enable autoranging.

3. Connect the Test Leads: Red to E, Black to COM

4. Connect the Test Probes to the circuit test points

5. Read the display, and, if necessary, correct any overload (o) conditions.

Preparing for Current Measurements

•Turn off circuit power before connecting the test probes.

•Allow the meter to cool between measurements if current measurements

approach or exceeds 10 amps.

•A warning tone sounds if you connect a test lead to a current input before you

select a current range.

•Open circuit voltage at the measurement point must not exceed 1000 V.

•Always measure current in series with the load. Never measure current across a

voltage source.

Measuring DC Current See Figure -4-

1. Set the Function Switch to a Afunction and range.

2. If RANGE is displayed, press the RANGE button to enable autoranging.

3. Connect the Test Leads: Red to µA mA or 10A, Black to COM

4. Turn off power to the circuit being measured.

5. Open the test circuit (X) to establish measurement points.

6. Connect the Test Probes in series with the load.

7. Turn on power to the circuit being measured.

8. Read the display, and, if necessary, correct any overload (o) conditions.

Measuring AC Current (True rms) See Figures -3- & -5-

See Additional Features to find out the advantages of true rms.

1. Set the Function Switch to a afunction and range.

2. If RANGE is displayed, press the RANGE button to enable autoranging.

3. Connect the Test Leads: Red to µA mA or 10A, Black to COM

4. Turn off power to the circuit being measured.

5. Open the test circuit (X) to establish measurement points.

6. Connect the Test Probes in series with the load.

7. Turn on power to the circuit being measured.

8. Read the display, and, if necessary, correct any overload (o) conditions.

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