EXTECH EX380941 [2/6] Front panel description

380941-EN-V3.2-3/12

Introduction

Congratulations on your purchase of Extech’s DC/AC Clamp Meter. This professional meter, with

proper care, will provide years of safe reliable service.

Front Panel Description

1. Current sense jaw

2. Measurement Trigger

3. Function switch

4. Data Hold key

5. Max Min key

6. One-touch DCA zero key

7. LCD Display

8. 40 segment bargraph display

9. Positive input terminal for V, HZ and Ω

10. COM terminal

International Symbols

Caution ! Refer to the explanation in this Manual

Caution ! Risk of electric shock

Earth (Ground)

Safety

This meter has been designed to be safe in use, but the operator must use caution in its operation.

The rules listed below should be carefully followed for safe operation.

1. NEVER apply voltage or current to the meter that exceeds the specified maximum:

2. USE EXTREME CAUTION when working with high voltages.

3. DO NOT measure voltage if the voltage on the "COM" input jack exceeds 500V above earth

ground.

4. NEVER connect the meter leads across a voltage source while the function switch is in the

current, resistance or diode mode; doing so can damage the meter.

5. ALWAYS discharge filter capacitors in power supplies and disconnect the power when making

resistance or diode tests.

6. ALWAYS turn off the power and disconnect the test leads before opening the back to replace

the fuse or batteries.

7. NEVER operate the meter unless the back cover and the battery/fuse door are in place and

fastened securely.