Omega HHM21, Руководство пользователя, Страница: 10 / 15

8
TIME Button
Press (TIME) to enter elapsed-time mode.
Push (TIME) to cycle through the Minutes and seconds, hours and minuates.
Press and hold down the (TIME) for 2 seconds to exit TIME mode.
Voltage Measurements
1. Connect the red test lead to the "V
W
" jack and the black test lead to the
"COM" jack.
2. Set the Function/Range switch to the desired voltage function.
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
A toggle button to select AC or DC.
2. For current measurements less than 430mA, connect the red test lead to the
µAmA jack and the black test lead to the COM jack.
3. For current measurements of 430mA 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.