Meter Description; Operation - Extech Instruments 380360 User Manual

Meter Description

1. LCD Display
2. Rotary function switch
3. Data hold switch
4. Test button
5. Manual / Lock select switch
6. HI input terminal
7. COM input terminal
8. LO input terminal
9. Positive test lead
10. Negative test lead
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.

Operation

Connecting Test Leads
For the MΩ range, connect the red test lead to the HI input terminal and the black test lead
to the LO input terminal. For the 200Ω and 600VAC functions, connect the red test lead to
the HI (right) input jack and the black lead to the COM (center) jack.
Test Lead Check
1. Connect the red test lead to the HI input terminal; black lead to the COM terminal.
2. Set the rotary switch to the 200Ω range.
3. Set the HOLD switch to the left off position and the
MANU/LOCK switch to the MANUAL position.
4. Touch the test lead tips together.
5. Press the red TEST button.
6. Resistance should read less than 1Ω and the audio tone
should sound.
7. With the leads not touching, the display should read 1__
indicating over-range.
8. Readings displayed other than the readings described above are indicative of a test
lead problem. The test leads must be replaced before using the meter. Failure to do
so could result in damage to equipment and electrical shock.
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Warning
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Model 380360 Version 1.7 September 2003
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