Mastech MAS830B, Operator'S Instruction Manual

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DIODE
Range Description
Show the approx. forward voltage drop of the diode.
Overload Protection : 250V dc or rms. ac.
TRANSISTOR hFE TEST (0-1000)
Range Test Range Test Current Test Voltage
NPN & PNP 0-1000 Ib=10
μ
A Vce=3V
OPERATING INSTRUCTIONS
DC VOLTAGE MEASUREMENT
1.
2.
3.
4.
Connect the red test lead to the “V.
Ω
.mA” jack and the
black lead to the “COM” jack.
Set rotary switch at desired DCV position. If the voltage
to be measured is not known beforehand, set range
switch at the highest range position and then reduce it
until satisfactory resolution is obtained.
Connect test leads across the source or load being
measured.
Read voltage value on the LCD display along with the
polarity of the red lead connection.
DC CURRENT MEASUREMENT
1.
2.
3.
4.
Connect the red test lead to the “V.
Ω
.mA” jack and the
black test lead to “COM” jack. (For measurements
between 200mA and 10A, move red lead to“10A” jack.)
Set the rotary switch at desired DCA position.
Open the circuit in which the current is to be measured,
and connect test leads in series with the circuit.
Read current value on LCD display along with the
polarity of red lead connection.
AC VOLTAGE MEASUREMENT
1.
2.
3.
4. Connect the red test lead to “V.
Ω
. mA” jack and the
black test lead to the “COM” jack.
Set the rotary switch at desired ACV position.
Connect test leads across the source or load being
measured. Read voltage value on the LCD display.
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