Mastech MAS830B - During Use; General Description

DURING USE
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Never exceed the protection limit values indicated in
specifications for each range of measurement.
When the meter is linked to measurement circuit, do not
touch unused terminals.
Never use the meter to measure voltages that might
exceed 600V above earth ground in category Ⅱ
installations.
When the value scale to be measured is unknown
beforehand, set the range selector at the highest
position.
Before rotating the range selector to change functions,
disconnect test leads from the circuit under test.
When carrying out measurements on TV or switching
power circuits always remember that there may be high
amplitude voltages pulses at test points, which can
damage the meter.
Always is careful when working with voltages above 60V
dc or 30V ac rms. Keep fingers behind the probe barriers
while measuring.
Before attempting to insert transistors for testing, always
be sure that test leads have been disconnected from any
measurement circuits.
Components should not be connected to the hFE socket
when making voltage measurements with test leads.
Never perform resistance measurements on live circuits.
GENERAL DESCRIPTION
The meter is a handheld 31/2 digital multimeter for measuring
DC and AC voltage, DC current, Resistance, Diode and
Transistor with battery operated.
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