Operation (Digital Multimeter); Ac And Dc Volts - Extech Instruments 381285 User Manual

Operation (Digital Multimeter)

AC and DC VOLTAGE
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WARNING: Risk of Electrocution. The probe tips may not be long enough to contact the
live parts inside some 240V outlets for appliances (contacts can be recessed deep in the
outlets). As a result, the reading may show 0 volts when the outlet actually is live. Make
sure the probe tips are contacting the metal contacts inside the outlet before assuming
that no voltage is present.
CAUTION: Do not measure AC or DC voltages if a motor on the circuit is being
switched ON or OFF. Large voltage surges may occur during the ON or OFF operations
that can damage the meter.
CAUTION: To avoid meter damage, do not apply 700V AC or 1000V DC for more than
10 seconds.
1. Insert the black test lead banana plug into the negative COM jack and the red test
lead banana plug into the positive V jack.
2. Set the function switch to the V position.
3. Select AC or DC voltage using the
4. Touch the test probe tips to the circuit under test.
5. Read the voltage in the display. The display will indicate the proper decimal point,
value and appropriate symbols.
Time to
auto-power off
Voltage
Elapsed time
TIME:02h52m
Soft keys
AC/DC key (default is AC).
AUTO
400V
60.00
Hz
120.2
V ac
100%
50%
20 40
0
44.00dBm
[ 600 ]
W
AVG
Peak
REL Limit
MIN_MAX
Hold
Sub-menu indicator
14
Range
Frequency
AC/DC
Bargraph
dB
dB reference
V2.1 03/06