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8024B
8024B
Table
2-1.
Controls,
Indicators,
and Connectors
(cont)
ITEM
NO.
NAME
FUNCTION
10
DC/AC/
Audible tone
A
push-push
switch (push
on
-
push
Switch
off,
do
not
pull).
When
using
V
or
mA
functions, the
in
position selects
AC
measurement
functions
and
the
out
position selects
the
DC
measurement
function.
When
used
with fZ or
S
func-
tions,
the
in
position
enables
the audi-
ble
tone
feature
and
the
out
position
disables the audible
tone
feature.
11
PEAK
HOLD
Switch
A
push-push
switch (push
on
-
push
off,
to
the
right
only,
do
not
push
or
pull
to
the
left),
that
enables
or disables the
Peak-Hold
function.
12
POWER
Switch
A
slide
switch
used
to
turn the
instru-
ment
off
and
on.
2-11.
OPERATING NOTES
2-12.
The
following
paragraphs
will
familiarize
you
with
the capabilities
and
limitations
of
your
Model
8024B.
2-13.
Input
Overload
Protection
CAUTION
Exceeding
the
maximum
input overload
limits
can
damage
your
instrument.
The
transient
overload
protection
circuit
is
intended
to
protect against short
duration high
energy
pulses.
The components
used
limit
the protection
to
approximately
five
pulses per
second
for
6
kV,
lOmicrosecond
pulses,
and
about
0.6
watts
average
for
lower
pulses.
Fast rep
rate
pulses as
from
a
TV
set
can
damage
the protection
components;
RV1
-
RV4, R1 and
R2*,
it
replaced,
use
only Fluke
replacement
parts
to
maintain product
safety.
*
R2
is
a fusable
resistor.
Use
exact
replacement
to
insure
safety.
2-14.
Each measurement
function
and
its
associated
ranges
are
equipped
with input
overload
protection.
The
overload
limits
for
each
function
and
range
are given
in
Table
2-
2
.
2-15.
input
Connection
to
COMMON
WARNING
Table
2-2.
Input
Overload
Limits
SELECTED
FUNCTION
INPUT
TERMINALS
MAX. INPUT
OVERLOAD
Voltage
V/12/S
and
COMMON
1000V dc
or
peak
ac
on
all
ranges
except 200
mV
(15
sec
max
above
300V
dc
or rms).
Current
and
Temperature
mA
-
°C
and
COMMON
2A maximum,
fuse protected
to
600V
dc/ac
rms.
DO NOT
USE
ABOVE
600V.
Resistance,
Continuity,
Level
Detector
and Conductance
V/S2/S
and
COMMON
500V
dc/ac
rms.
Any
COMMON
500V
dc/ac
rms
with respect
to
earth
ground.
2-16.
The 8024B
may
be
operated with
the
COMMON
input terminal
at
a
potential of
up
to
500V
dc or
500V mis
ac
above
earth
ground.
If
this limit
is
exceeded, instrument
damage
may
occur. This,
in
turn,
may
result
in
a
safety
hazard
for the
operator.
2-17.
Fuse
Check
2-18.
The
current (m.A) function contains
two
fuses.
Check them
as follows:
1
.
Complete
the
setup
steps for the
RESISTANCE
(ft)
function
and
select
the 2
kfl range.
2.
Touch
the red
test
probe
to the
rnA
input jack
so
that
the V-ft input
and
mA
input are
connected
together.
3.
If
the display reads
approximately
.100
kft,
both
fuses are
good.
4.
If
the display reads
overrange
1
followed
by blank
digits,
one
or
both
fuses
need
replacement.
See
the
following
paragraph
for
replacement
instructions.
2-19.
Fuse Replacement
,
2-20.
All
ac
and
dc
current ranges are fuse protected.
Two
series
fuses are used:
(i)
FI,
2
A/
250V,
replaceable
at
the battery
compartment
(see
Section
2
"'Battery
or
Fuse
Installation/
Replacement") and
(2)
F2,
3
A
'600V
battery fuse {see
Section
4
"Battery/
Backup
Fuse Replacement").
WARNING
2-6
TO
AVOID ELECTRICAL
SHOCK
AND/OR INSTRUMENT DAMAGE,
DO
NOT CONNECT THE
COMMON
INPUT
TERMINAL
TO ANY SOURCE
OF
MORE
THAN
500
VOLTS
DC OR
500V
RMS AC ABOVE
EARTH GROUND.
TO
AVOID ELECTRICAL
SHOCK DO NOT
OPERATE THE
8024B
UNTILTHE
BATTERY COVER
IS
IN
PLACE
AND
FULLY CLOSED.
2-7
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