General Tools and Instruments DMM333 - Manual (Page 17)

17
OPERATING INSTRUCTIONS
• Data Hold and Max Hold
Press the “H” (Hold) button
to hold present reading, and
press the “M” (Max Hold)
button to hold max reading.
• DC Voltage Measurement
Do not measure voltage higher
than 500V. If the voltage is over
1000 VDC, the beeper will
sound for warning continuously,
designating an over-range
measurement.
1.Set the function/range switch to
the appropriate DC voltage range.
2.Touch the black test lead to the
negative polarity, and touch the
red test lead to positive polarity
of the circuit to be tested.