380366 V1.6 11/04
4
Operation
Connecting Test Leads
For all functions (Megohmmeter, Resistance, Continuity and AC Voltage), connect the red
test lead to the HI terminal and the black lead to the LO terminal.
Test Lead Check
1. Connect the red test lead to the HI input terminal; black lead to the LO terminal.
2. Set the rotary switch to the resistance/ continuity position ( .
Ω)
3. Touch the test lead tips together. Resistance should be less than 1
Ω
and the audio
tone should sound.
4. With the leads not touching, the display should read “-OL-“. (over range).
5. If any readings are displayed other than the readings just described, the test leads
should be considered faulty and must be replaced before using the meter. Failure to
do so could result in damage to equipment and electrical shock.
Insulation Resistance Measurements (Megohmmeter Tests)
1. Connect the red test lead to the HI input terminal; black lead to the LO terminal.
2. Set the rotary switch to the desired function.
3. Connect the tips of the test leads to the equipment under test.
4. Press and hold down the red TEST button. Release the test button to stop the test. The
meter will then hold the resistance reading. This is indicated by the H icon in the upper
left corner of the display.
5. To clear the display, press the LOCK/HOLD button twice.
Note that the charge stored on the device under test will be automatically discharged
when the testing process is finished
3-Minute Test
For hands-free operation, use the Test Lock feature.
1.
Connect the red test lead to the HI input terminal; black lead to the LO terminal
2.
Set the rotary switch to the desired function.
3.
Connect the tips of the test leads to the equipment under test.
4.
Press the LOCK button. The LOCK icon will be displayed. Press the red TEST button.
A 3-minute continuous test will begin. The red TEST button can be pressed at any
time to end the test. If the TEST button is not pressed the meter automatically stops
the test after 3 minutes. The meter will then hold the resistance reading. This is
indicated by the H icon in the upper left corner of the display.
5.
To clear the display, press the LOCK/HOLD button twice.
Note:
The symbol will appear in the upper right corner of the display and an audible
tone will sound whenever the high voltage is applied to the test leads.
Warning
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.
Warning: Do not perform Insulation Resistance measurements if AC Voltage is present on circuit under test.
