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5 V2 Digital Multimeter User Manual
1 Safety Precautions
Safety ground:
Connect the power cord of the instrument to a grounded socket. Make sure that the instrument is
reltably grounded,
Use proper fuse:
Please use only fuscs of the specified type and rating.
Proper use of lead set:
Do not use damaged or worn test lead set. When using probes, the finger should be kept behind the
finger protector of the probe. When wiring, you should connect the common line first and then connect
the charged test lead. When disconnecting, disconnect the charged test lead first.
IF the instrument malfunctions, do not use:
Do not change the wiring inside the instrument, so as not to cause damage to the instrument or
endanger the safety.
When measuring, you must select the correct measurement function and (he measurement
range.
Before the function range is switched, disconnect the probe and the circuit under test to
prevent damage to the instrument.
Protect limits:
Without exceeding the protection linnts, the protection circuit of this instrument prevents damage to
the instrument and shock hazard. To ensure the safe operation of the instrument, do not exceed the marked
Limits for protection on front and rear panels.
IEC measurement type H overload protection:
To avoid the risk of electric shock, this instrument provides overload protection for the mains under
the following two conditions.
1) HI and LO input terminals under the condition
of the measurement type Il (as described below)
are connected to mains.
2) 'The maximum hine voltage of mains is 300 VAC.
In order to avoid blown fuse or damage to the meter, be sure to follow these tips to use the
current input terminals.
1) 10 A and 200mA input terminals are not allowed to sitnultaneously connect to the current
measurement circuit.
2) Ifthe effective value of the measured current AC + DC 15 withun the vange from 200mA to 10 A,
only 10A and LO terminals are allowed to be used in the measurement.
3) Before performing current measurement, be sure to select the correct current input terminal
according to the expected current size.
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