Mastech MS2108A, Operation Manual

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have been incurred.
1.1.4 Test leads must be kept in good condition. Before using check
whether the insulation on test leads has been damaged and any
wire has been exposed.
1.1.5 Use the test leads supplied to ensure operation safety. If
required, they must be replaced with test leads of the same
model or class.
1.2 DURING USE
1.2.1 Use the right input jack, function and range.
1.2.2 Do not take measurements that exceed the protection limit
values indicated in the specifications.
1.2.3 Do not touch the metal tips of the test leads when the meter is
connected to the circuit to be measured.
1.2.4 Keep your fingers behind the probe barriers when taking a
measurement with an effective voltage above 60V DC or 30V
rms AC.
1.2.5 Do not take voltage measurement if the value between the
terminals and earth ground exceeds 600V.
1.2.6 Select the highest range if the value scale to be measured in
the manual range is unknown.
1.2.7 Disconnect the test leads from the circuit under test before
turning the rotary selector to change functions.
1.2.8 Do not measure the resistance
，
capacitance, diode or
continuity of live circuits.
1.2.9 Do not connect the meter to any voltage source while the
rotary selector is in the current, resistance, capacitance, diode
or continuity range.
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1.2.10 Do not take capacitance measurements until the capacitor to
be measured has been fully discharged.
1.2.11 Do not use the meter near explosive gases, steam or dirt.
1.2.12 Stop using the meter if any abnormalities or faults are
observed.
1.2.13 Do not use the meter unless its rear case and battery cover is
securely fastened in its original position.
1.2.14 Do not store or use the meter in areas exposed to direct
sunlight, at high temperature or with high relative humidity.
1.3 SYMBOLS
Caution, risk of danger (Important safety information; refer
to the operation manual.)
Application around and removal from HAZARDOUS
LIVE conductors is permitted.
Double insulation
（
Protection class II
）
.
CAT III Overvoltage (Installation) category III, Pollution
Degree 2 per IEC1010-1 refers to the level of Impulse
Withstand Voltage protection provided.
Conforms to European Union Directive
Earth (ground) terminal
1.4 MAINTENANCE
1.4.1 Do not attempt to remove the rear case to adjust or repair the
meter. Such actions should only be performed by a technician
who fully understands the meter and the danger involved.
1.4.2 Before opening the case and battery cover of the meter,
always disconnect test leads from all sources of electric
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