Radio Shack 2200087 - Measuring Capacitance; Checking Continuity

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Note:
+
With
no
resistance
connected
across
the
test
leads
(meaning
resistance
is
infinite),
OF
appears
when
you
measure
resistance.
This
is
normal.
+
Ifyouare
measuring
resistance
of about
1MC)
or
more,
the
display
might
take
a
few
seconds
to stabilize.
This
is
normal
+
Tocalculate
and
measure
a
very
small
resistance,
see
“Taking
Relative
Measurements”
on
page
19.
Measuring
Capacitance
The
capacitance-measuring
circuit
in
your
meter
charges
a
connected
capacitor
to
a
specific
voltage
level,
then
discharges
the
capacitor
to
a
lower
voltage.
The
meter
measures
the
amount
of
time
it
takes
to
discharge
the
capacitor.
1.
Power
off
the
circuit
under
test
and
discharge
all
capacitors.
2.
Rotate
the
function
dial
to
QA
tand
press
SELECT
until
nF
or
pf
appears
Attach
the
red
test
lead
to
the
positive
side of
the
capacitor
and
the
black
test
lead
to
the
negative
side.
Or,
remove
one
of
the
leads
of
the
capacitor
fromits
circuit
and
connect
the
test
leads
to
the
capacitor's
matching
(positive
or
negative)
terminals. The
measured
value
appears.
Note:
The
voltages
applied
across
electrolytic
capacitors
affect
their
measured
value.
A
measurement
taken with
a
low
voltage
will
be
lower
than
one
taken
with
a
voltage
near
the
capacitor’s
voltage
rating.
Because
this
meter
cannot
use
high
voltage
to
set
the
electrolyte,
it
cannot
measure
the
absolute
value
of
capacitance.
+
Forlow-value
capacitors,
the
measurement
might
be
very
close
to
the
meters
actual
input
capacitance.
Use
the
meters
relative
feature
to
measure
low
capacitance
values.
See
“Taking
Relative
Measurements”
on
page
19.
+
Capacitance
measurement
accuracy
depends
on
the
measurement
method
and
differs
with
different
types
of
capacitors.
The
meter's
measurement
is
for
reference
only.
Checking
Continuity
You
can
use
the
meter
to
check
for
shorted
or
open
electrical
circuits.
1.
Power
off
the
circuit
under
test
and
discharge
all
capacitors.
2.
Rotate
the
function
dial
to
9k.
3.
Press
SELECT
until")
appears.
14