RAPITEST DM25 - Transistor Testing Guide; Continuity Testing

3.5
TESTING
TRANSISTOB
1
.
Set the
function
switch
at
hFE
position'
2.
ldentify
whether
the
transistor
is
NPN or
PNP
type
and
locate
emitter'
base
and
collector
lead.
lnsert
leads
of the
transistor
to
be tested
into
proper
holes
of
the
testing
socket
on the
front
Panel.
s.
lcD iisplay
will show
the
approximate
hFE
value
at the
test
condition
of base
current
1OpA
and
Vce 3.2V.
3.6
CONTINUITY
TEST
1. Connect
the
black
test
lead
to
the
COM
iack
and
the
red test
lead to
the
V/O
jack'
2.
Set
the
rotary
switch
at
t
position
and
connect
test
leads
across
two
points
of
the
circuit
under
testing.
lf
continuity
existsli.e.,
resistance
less than
about
7O o
l'
built-in
buzzer
will
sound.
-12-