CLAS OE 3004, Manual

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OE 3004
DIGITAL MULTIMETER CAT. III
OPERATING INSTRUCTIONS
Data Hold Mode
Press the "
H
" button to hold the present reading on the display. " " appears on the display as an indicator.
To exit the Data Hold mode, press the button again. " " disappears.
Measuring DC or AC Voltage
1. Connect the black test lead to the "COM" terminal and the red test lead to the "ΩVmA°C" terminal.
2. Set the range switch to desired range position.
If the magnitude of the voltage to be measured is not known beforehand, set the range switch to the highest range
position fi rst and then reduce it range by range until satisfactory resolution is obtained.
3. Select DC or AC voltage measurement with the " AC/DC "
button according to the marks beside this button.
4. Connect the test leads across the source or circuit to be tested.
5. Read the display. For DC voltage measurements, the polarity of red lead connection will be indicated as well.
Note:
To avoid damage and injury, do not measure a voltage higher than 300V de/ac although reading may be
obtained.
Measuring DC or AC Current
1. Connect the black test lead to the "COM" terminal. Connect the red test lead to the "CVmA"C" terminal if the
current to be measured is less than 200mA. If the current is between 200mA and 1OA, connect the red test lead
to the "10A" terminal instead.
2. Set the range switch to desired range position.
3. Select DC or AC current measurement with the "AC/DC" button according to the marks beside this button.
4. Turn off power to the circuit to be tested. Then discharge all highvoltage capacitors.
5. Break the circuit path to be tested, then connect the test leads in series with the circuit.
6. Turn on power to the circuit, then read the display.
For DC current measurements, the polarity of the red test lead connection will be indicated as well.
Note:
If the magnitude of the current to be measured is not known beforehand, set the range switch to the highest range
fi rst and then reduce it range by range until satisfactory resolution is obtained.
Measuring resistance
1. Connect the black test lead to the "COM" terminal and the red test lead to the "ΩVmA°C" terminal.
2. Set the range switch to desired Ω range position.
3. Connect the test leads across the abject to be tested.
4. Read the reading on the display.
Note:
1. For measurements > 1MΩ, the meter may take a few seconds to stabilize reading. This is normal for high
resistance measurements.
2. When the input is not connected, i.e. at open circuit, only fi gure "1" will be displayed as an overrange indication.
3. Before test, disconnect all power to the circuit to be tested and discharge all capacitors thoroughly.
Continuity test