FLIR Extech Instruments MS460 Bedienungsanleitung

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User'sGuide

Digital 20MHz and 60MHz Oscilloscopes

Model MS460 - 60MHz

Model MS420 - 20MHz

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V5.1‐March2010

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INTRODUCTION

Congratulations on your purchase of the Extech Digital Oscilloscope. This

manual is divided into two sections: Section One for the Oscilloscope

functions and Section Two for the MultiMeter functions. This meter is shipped

fully tested and calibrated and, with proper use, will provide years of reliable

service.

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V5.1‐March2010

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TABLE OF CONTENTS

GENERAL INFORMATION

WARRANTY 5

PRODUCT CONTENTS 6

SAFETY INFORMATION 7

INPUT CONNECTIONS 10

FRONT PANEL AND CONTROL KEYS OVERVIEW 11

RECALL FACTORY DEFAULT SETTINGS 19

PC DATA TRANSMISSION 63

FAQ. 76

APPENDIX A: SPECIFICATIONS 77

APPENDIX B: MAINTENANCE AND CLEANING 82

APPENDIX C: BATTERY CHARGING AND REPLACEMENT 83

APPENDIX D: SETTING THE REAL TIME CLOCK 84

SECTION ONE -OSCILLOSCOPE

BASIC INSTRUCTIONS ON USING THE OSCILLOSCOPE 13

POWERING THE OSCILLOSCOPE. 13

MAIN OSCILLOSCOPE DISPLAY SCREEN 13

MENU DESCRIPTION 15

SETTING THE TRIGGER POSITION AND TIME BASE 15

OSCILLOSCOPE INPUT CONNECTIONS 19

MEASURE UNKNOWN SIGNALS /AUTO SET FEATURE 20

AUTO ZERO THE HORIZONTAL TRIGGER. 20

AUTOMATIC RANGING MEASUREMENTS 20

DATA HOLD 21

AVERAGE MODE TO SMOOTH WAVEFORMS 22

PERSISTENCE MODE (SUPERIMPOSE WAVEFORMS) 22

PEAK DETECT (GLITCH CAPTURE) 23

AC COUPLING MODE 24

REVERSE WAVEFORM POLARITY 25

MATHEMATICAL FUNCTIONS 26

USB MASS STORAGE . 27

ADVANCED OSCILLOSCOPE FUNCTIONS 28

VERTICAL SETTINGS FOR CH1 AND CH2 28

CHANNEL COUPLING 29

OPEN AND CLOSE MEASUREMENT CHANNELS 30

SETTING THE PROBE ATTENUATION 30

INVERT A WAVEFORM DISPLAY. 30

MATHEMATICAL FUNCTION MENU SETTINGS 31

SETTING UP THE TRIGGER SYSTEM 32

TRIGGER CONTROL 33

ACQUISITION MODE 40

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DISPLAY SETTINGS 40

STORING WAVEFORMS IN THE METER 42

FUNCTION SETTINGS MENU 43

AUTO CALIBRATION. 44

AUTO RANGE MEASUREMENTS 44

AUTOSCALE MODE . 45

CURSOR MEASUREMENTS 49

FREQUENCY COUNTER (MS460) 52

SQUARE WAVE OUTPUT. 53

FFT MODE.(MS420) 54

SYSTEM STATUS MENU. 61

TIME BASE MODE . 62

SECTION TWO – MULTIMETER FUNCTIONS 64

CONNECTING THE METER. 65

DISPLAY WINDOW. 65

RESISTANCE MEASUREMENTS 67

MEASURING DIODE VOLTAGE 67

CONTINUITY TEST. 68

MEASURING CAPACITANCE 69

MEASURING DC VOLTAGE 69

MEASURING AC VOLTAGE 70

MEASURING DC CURRENT 71

MEASURING AC CURRENT 72

DATA HOLD (FREEZE READINGS) 73

RELATIVE MEASUREMENTS 74

AUTOMATIC /MANUAL RANGE 75

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V5.1‐March2010

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PRODUCT CONTENTS (REFER TO THE FIG.1BELOW)

1. MS420 / MS460 Instrument

2. AC Adaptor

3. Oscilloscope Probes (2); Grey in color

4. Multimeter test leads (2); One black, one red

5. USB mass storage connection cable

6. Extension module for low capacitance measurements

7. Probe adjustment tools

8. USB or Serial PC Communication cable

9. User manual

10.CD-ROM Software Program

11.Carrying Case

Figure 1: Supplied Equipment

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V5.1‐March2010

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SAFETY INFORMATION

Please read the user manual before use to ensure safety and precision

SAFETYSYMBOLSANDTERMS

SAFETY SYMBOLS

THESE SYMBOLS MAY APPEAR IN THIS MANUAL OR ON THE INSTRUMENT:

WARNING: “WARNING”IDENTIFIES CONDITIONS &ACTIONS THAT POSE A HAZARD

TO THE USER

Caution: “Caution” identifies conditions and actions that may damage the

product or external equipment

SAFETY TERMS

The following terms may appear on the instrument:

Danger: The term “Danger” is used in this manual to indicate that

immediate personal injury can result

Warning: The term “Warning” is used in this manual to indicate that,

although immediate personal injury is not likely, caution should be

taken

Notice: The term “Notice” is used in this manual to indicate that damage to

the meter or to other equipment can occur

DANGER:

High

Refer to the

Manual

Protective

Conductor

Terminal

Chassis

Ground

Earth

(ground)

Terminal

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V5.1‐March2010

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GENERALSAFETYINFORMATION

Carefully read the following safety information in order to avoid personal injury and

damage to this product or to products connected to it. This product must only be

used in the specified manner to prevent danger and hazard to products and persons.

Warning:

To avoid fire or electrical shock please use the proper power adapter. Use only

the power adapter recommended by the manufacturer.

Warning:

To avoid fire or electrical shock do not connect meter to more than 42V peak

(30Vrms) or on circuits of more than 4800VA:

● Use only the insulated voltage probes, test leads and adapter supplied with

the test tool, or as indicated by Extech as suitable for the Oscilloscope &

Multimeter.

● Before use, inspect voltage probes, test leads and accessories for

mechanical damage. Replace the equipment when it appears damaged.

● Remove all probes, test leads and accessories when not in use.

● Always connect the power adapter first to the AC outlet before connecting

it to the Oscilloscope & Multimeter.

● Do not apply voltages that exceed 400 V from earth ground to any input

when measuring in a CAT II environment.

● Do not apply voltages that exceed 400 V to the isolated inputs when

measuring in a CAT II environment.

● Use caution when using 1:1 test leads since the probe tip voltage will be

directly transmitted to the Oscilloscope & Multimeter.

● Do not use exposed metal BNC or banana plug connectors.

● Do not insert metal objects into the connectors.

● Always use the Oscilloscope & Multimeter in the manner specified.

● Voltage ratings, mentioned in the warnings, are provided as “working

voltage” limits. They represent V ac rms (50-60Hz) for AC sine wave

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V5.1‐March2010

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applications and as V dc for DC applications. Overvoltage Category II refers

to local level applicable for appliances and portable equipment.

Only qualified technical personnel should perform maintenance on these

devices.

Observe the nominal value limits for all terminals: To avoid fire or electric shock,

observe all nominal value limits, markings, and specifications for this product. Before

connecting to this product, carefully read the user’s manual.

Do no operate this instrument without the cover plate secured: If the cover plate

or panel has been removed, do not use this product.

Do not touch bare conductors

Do not use this meter in case of any undetermined failure: When in doubt

consult qualified repair personnel

Do not hinder the meter’s ventilation: Refer to the user manual for detailed

installation instructions and proper setup for adequate ventilation

Do not operate this meter in overly humid environments.

Do not operate this meter in potentially explosive environments.

Keep the meter’s surface clean and dry.

Use of this device in any manner inconsistent with the uses specified in this manual

can possibly compromise the safety protection provided by the meter.

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9

V5.1‐March2010

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INPUT CONNECTIONS

INPUTCONNECTIONS

See Figure 2 below

Figure 2

Description

1. The power adapter is use to supply AC power and for battery recharging

2. Multimeter test leads

3. Multimeter input jacks (L to R: Current 2A-10A input, mA Current input, COM

ground input, Voltage/Resistance/Capacitance input)

4. Oscilloscope probes

5. Oscilloscope channel inputs

6. Square wave output jack

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10

V5.1‐March2010

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FRONTPANELANDKEYPADOVERVIEW

Figure 3

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