Beta 017600022, Operating Instruction

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13
True RMS Digital Multimeter
6. Operating Instructions
WARNING: Risk of electrocution. High-voltage circuits, both AC and DC, are very
dangerous and should be measured with great care.
• Always turn the function switch to the OFF Position when the meter is not in
use.
• If “OL” appears in the display during a measurement, the value exceeds the
range you have selected. Change to a higher range.
NOTE: On some low AC and DC voltage ranges, with the test leads not connected
to a device, the display may show a random, changing reading. This is normal
and is caused by the high-inputsensitivity. The reading will stabilize and give a
proper measurement when connected to a circuit.
6-1 DC Voltage Measurement
CAUTION: Do not measure DC voltages if a motor on the circuit is being switched
ON or OFF. Large voltage surges may occur that can damage the meter.
1. Set the function switch to the highest VDC Position.
2. Insert the black test lead banana plug into the negative COM Input Jack;
Insert the red test lead banana plug into the Positive Input Jack.
3. Touch the black test probe tip to the negative side of the circuit; Touch the
red test probe tip to the positive side of the circuit.
4. Read the voltage in the display.
5. Reset the function switch to successively
lower VDC Position to obtain a higher
resolution reading, the display will
indicate the proper decimal point
and value.
6. If the polarity is reversed, the
display will show (-) minus before
the value.