Omega HHM17 User Manual page 11

Alternate Function Button
The Alternate Function button is Blue in color. Press it to toggle to the alternate
function (AC, Audible continuity and Capacitance) shown in Blue on the meter
face.
Voltage Measurements
1. Connect the red test lead to the "VW " jack and the black test lead to the
"COM" jack.
2. Set the Function/Range switch to the desired voltage range and press the
Blue toggle button to select AC or DC. The meter will automatically select
the best voltage range.
3. Connect the test leads to the device or circuit being measured.
4. For dc, a (-) sign is displayed for negative polarity; positive polarity is implied.
Current Measurements
1. Set the Function/Range switch to the desired current range and press the
Blue toggle button to select AC or DC.
2. For current measurements less than 400mA, connect the red test lead to the
mA jack and the black test lead to the COM jack.
3. For current measurements of 400mA or greater, connect the red test lead
to the 10A jack and the black test lead to the COM jack.
4. Remove power from the circuit under test and open the normal circuit path
where the measurement is to be taken. Connect the meter in series with the
circuit.
5. Use caution when measuring 10 amps on 10A range for 60s, please waiting
for 10 minutes for next measurement of 10 amps for safety reason.
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