Signal Input Limits; Operating Techniques; Ac/Dc Voltage; Ac/Dc Current - Fluke 8010A Instruction Manual

OPERATION
SIGNAL INPUT LIMITS
2-18.
SIGNAL INPUT
LIMITS
CAUTION
Exceeding
the
maximum
signal input
limits
can damage
the instrument.
2-19,
Before using
your
Multimeter,
it is
important
to
note the
maximum
input limits that
may
bg
applied
to the
instrument.
Table 2-2
lists
the
maximum
signal input
levels
for
each
function, range,
and
input connector.
WARNING
TO AVOID ELECTRICAL SHOCK,
DO NOT
CONNECT
THE
COMMON
INPUT
CON-
NECTOR TO ANY SOURCE MORE THAN
500V DC,
OR
500V
PEAK
AC ABOVE
EARTH
GROUND.
2-20.
OPERATING TECHNIQUES
2-2
1
.
The
following paragraphs describe
how
to operate
your Multimeter
in
each of
its
five
primary
measurement
functions.
Additional operating instructions and
applications are given
in
the
paragraphs on
Applications,
later in this section.
2-22.
AC/DC
Voltage
(V)
2-23,,
Figure 2-3 describes
how
to
operate your
Multimeter
for ac or
dc voltage measurements. For
all
measurements,
select
the highest range
that
will
provide
the required resolution of the
measurement.
If
measuring
an
unknown
voltage,
set
the
DMM
on
the highest range,
then
(if
needed)
select
a lower range.
2-24.
AC/DC
Current
(mA)
2-25. Figure 2-4 describes
how
to
operate
your
Multimeter
for ac or dc current
measurements up
to
2A.
(The
lOA Range
current
measurement
feature of the
8010A
is
described
in
the following
paragraph.) Turn
off
power
to
the
circuit
being measured before
breaking
the
circuit
and
connecting
the
Multimeter
in series with the
current source.
To
minimize
common mode
voltages,
break
the circuit
on
the
ground
side
of the current source.
The
mA
input
connector
contains
an
in-line fuse. If the
Multimeter does not respond
when
measuring
current
using the
mA
input connector,
check
the fuse
(refer
to the
fuse
replacement procedure
earlier in this section). If
measuring
an
unknown
current,
set
the
Multimeter on
the
highest range, then
select
a lower range
if
needed.
2-26.
AC/DC
Current (10A max,
801
OA
only)
CAUTION
The 10A
input
connector on
the 801
OA
is
not
fused.
Take
extra precautions
to
not
exceed
the
10A
maximum
current handling
ability
of
the
8010A.
2-27.
Figure 2-5
describes
how
to
operate the
8010A
for
ac or dc current
measurements up
to lOA.
The lOA
input
connector
on
the
8010A
is
not fused.
Observe
the
Caution
given above. All other conditions
for
normal
ac or dc
current
measurements, given
in the
preceding paragraph,
apply to the
lOA Range
feature of the
80 10
A,
2-28.
Resistance
(Q)
2-29.
Figure 2-6 describes
how
to
operate
your
Multimeter
for resistance
measurements. (The
Low
Ohms
resistance feature
of the
8012A
is
described
in the
following paragraph.) Erroneous measurements can
occur
if
power
is
present
in the resistance
being measured.
Ensure that
power
is
removed and
the
circuits
are
discharged before measuring
in-circuit resistances.
The
AC/
DC
function switch has
no
effect
during
resistance
measurements.
2-30.
Low Ohms
Resistance (LO
RANGE
Q,
801
2A
only)
2-3
1
.
Figure 2-7 describes
how
to operate the 80
1
2
A
for
low
ohms
resistance
measurements.
All other conditions
for
normal
resistance measurements, given
in
the
preceding paragraph, apply
to the
LO
OHMS
feature of
the
80 12 A.
Table
2-2.
Maximum
Input-Signal Limits
FUNCTION
SELECTED
RANGE
SELECTED
INPUT
TERMINALS
MAXIMUM
INPUT
OVERLOAD
V
or
dB
DC
ALL
RANGES
V/k^2/S
and
COMMON
1000V
dc
or
peak
ac
AC
20V, 200V,
750V
750V
rms continous
or
10"^
V-Hz
2V,
200
mV
750V
rms
for
no
longer than 15 seconds or 10'^V-Hz
mA
DC
or
AC
ALL RANGES
mA
and
COMMON
Double
fuse protected:
2A,
250V
fuse
in
series
with
a
3A,
600V
fuse
kf2 or
S
ALL RANGES
V/kH/S
and
COMMON 500V
dc
or ac
rms