Meter Description; Operation; Connecting Test Leads - Extech Instruments 380363 User Manual

Meter Description

The tilt stand and battery compartment are located at the rear
of the instrument

Operation

Connecting Test Leads

Test Lead Check
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1. LCD Display
2. LOCK button
3. MEMORY control button
4. UP arrow key
5. TEST button
6. Rotary switch
7. DOWN arrow key
8. READ memory button
9. ZERO adjust button
10. Input terminals
Ensure that the circuit under test does not include components that can be damaged by 1000VDC; such
devices include power factor correction capacitors, low voltage mineral insulated cables, electronic light
dimmers, and ballasts/starters for fluorescent lamps.
For all measurements connect the red test lead to the V input terminal and the black test lead to
the COM input terminal.
Set the rotary switch to the 
1.
2. Touch the test lead tips together.
3. Resistance should read less than 0.5 and the audio tone should sound.
4. With the leads not touching, the display should read OL indicating over-range.
5. Readings displayed other than the readings described above are evidence of a problem and
the test leads must be replaced before using the meter. Failure to do so could result in damage
to equipment and electrical shock. If replacing the test leads does not solve the problem, return
the instrument for repair.
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