Extech
Instruments
20 GX900-EU-EN V1.6 4/14
RESISTANCE
MEASUREMENTS
WARNING:
To
avoid
electric
shock,
disconnect
power
to
the
unit
under
test
and
discharge
all
capacitors
before
taking
any
resistance
measurements.
Remove
the
batteries
and
unplug
the
line
cords.
1.
Set
the
function
switch
to
the
Ω
CAP
position.
2.
Insert
the
black
test
lead
banana
plug
into
the
negative
COM
jack.
3.
Insert
the
red
test
lead
banana
plug
into
the
positive
Ω
jack
4.
Touch
the
test
probe
tips
across
the
circuit
or
part
under
test.
It
is
best
to
disconnect
one
side
of
the
part
under
test
so
the
rest
of
the
circuit
will
not
interfere
with
the
resistance
reading.
5.
Read
the
resistance
in
the
display.
