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4-8-2. Select NPN or PNP , insert separately emitter,
base and collector to proper terminal.
4-9
．
Diode and continuity test
4-9-1
．
Apply the black test lead to “COM” terminal
，
and
the red one to “V/Ω/Hz” terminal
（
the polarity of
the red test lead is “+”
）
.
4-9-2
．
Set the range knob to
, connect the test
leads with the diode under measured, and the
reading is close to the value of diode forward
voltage drop.For silicon PN junction, the average
is about 500mV to 800mV identified as
normal ,if the diode under tested is open circuit
or the reverse polarity, the LCD displays “OL”.
4-9-3
．
Connect the test leads with two points of circuit
