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DIGITAL MULTIMETER

CONTENTS

1. SAFETY INFORMATION ……1

1.1 PRELIMINARY ……1

1.2 DURING USE ……2

1.3 SYMBOLS ……3

1.4 MAINTENANCE ……4

2. DESCRIPTION ……5

2.1 NAMES OF COMPONENTS ……5

2.2 SWITCH, BUTTONS AND INPUT JACK

ELUCIDATION

……6

3. SPECIFICATIONS ……7

3.1 GENERAL SPECIFICATIONS ……7

3.2 ELECTRICAL SPECIFICATIONS ……8

4. OPERATING INSTRUCTION ……13

4.1 POWER-UP ……13

4.2 DATA HOLD ……13

4.3 MAXIMUM HOLD ……13

4.4 FUNCTION TRANSFORM ……13

4.5 RANGE TRANSFORM ……13

4.6 BACK LIGHT ……14

4.7 AUTO POWER OFF

……14

4.8

PREPARATION FOR MEASUREMENT

……15

4.9 MEASURING DC VOLTAGE ……15

4.10 MEASURING AC VOLTAGE ……17

4.11 MEASURING DC CURRENT ……18

4.12 DC CURRENT MEASURING (WITH

CLAMP, OPTIONAL)

……19

4.13 MEASURING AC CURRENT ……20

Mastech MS8221C User Manual

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