Fluke 8600A - 2-21. Input Overload Protection

8600A
2-13.
OPERATING
NOTES
2-14.
The
following
paragraphs
describe
various
condi-
tions
which
should
be considered
before
operating
the
8600A.
2-15.
Option
Information
2-16.
Supplementary
information
is
necessary
when
operating
an
8600A
which
is equipped
with
one of
the
available
options.
Detailed
information
regarding
the opera-
tion of
each
available
option
is given
in Section
6,
Options
and
Accessories.
2-17.
Fuses
2-18.
The
8600A is equipped
with
a
line
power fuse,
and
a current
overload
fuse for
the current
measuring
function.
The line
fuse
is located
near
the
transformer
on the
inside
of
the instrument.
The
following
procedure
should
be carried
out
only
by qualified
personnel.
To
gain access,
remove
ac
power, remove
the
retaining
screw
on the
rear of
the
case
and
remove
the
instrument
from
the
case.
When
replace-
ment is
necessary,
use
an
AGC
1
/8A
fuse.
The
current
in-
put fuse
is
located
behind
the front-panel
MA INPUT
ter-
minal,
and
is accessed
by turning
(ccw) and
removing
the
MA INPUT
terminal.
Use
a
John
Fluke
376582
replace-
ment fuse
or
equivalent
2A
fast-blo
fuse
(AGX)
1 inch
in
length.
2-19.
Overrange
Indication
2-20.
The
front
panel
display,
in
addition to
providing
a
measurement
reading,
is
designed
to
serve
as
an
overrange
indicator.
When
the full
scale
capability
of the selected
range
for
any
function
is
exceeded,
the display
will
blink
while
indicating
a 18888
reading.
The
presence of
an
overrange
indication
does
not
necessarily
mean that
the
instrument
is
being
exposed
to
a damaging
input condition.
2-21.
Input
Overload
Protection
/j\
CAUTION
Exceeding
the
maximum
input
overload
conditions
can
damage
the 8600
A.
2-22.
Each
range
and
function
of
the
8600A is
equipped
with
input
overload
protection.
The
maximum
allowable
input
overload
conditions
for
each
function
and range
are
given in
Table
2-2.
2-23.
Autoranging
2-24.
Autoranging
can
be selected
when the
8600A is
in
the VDC,
VAC,
or K£2
functions.
When
the AUTO
pushbutton
is
depressed
the
8600A will
select the lowest
range
that
will
display
the value
of
the input
signal without
causing
an
overrange
indication.
Autoranging
stops when
one
of
the
individual
range
pushbuttons
is
depressed.
Table
2-2.
BASIC
MEASUREMENT
INSTRUCTIONS
8600A
DESIRED
MEASUREMENT
SELECT
FUNCTION
SELECT
RANGE
INPUT
CONNECTION
MAXIMUM
INPUT
REMARKS
DC Volts
DCV
200 MV,
2,
20
200,
or
1 200V
V-n
and
V-J
2 LO 1200V
dc or
1700V
peak
ac, any range
Auto-polarity
Auto-ranging
DC
Milliamperes
DC MA
200
jUA,
2,
20
200
or
2000MA
MA
and MA
LO* 2A
(Fuse
Protected)
Manual-ranging
Auto-polarity
AC
Volts
ACV
200 MV,
2,
20
V-S2
and V-S2
LO 1200V rms
(sinusoidal),
1700V
peak
ac, any
range
Auto-ranging
Average
Responding
calibrated
to read
rms
ac volts
AC
Milliamperes
AC MA
200
MA,
2,
20
200,
or
2000 M
A
MA
and
MA
LO*
2A (Fuse
Protected)
Manual-ranging
Average
Responding
Kilohms
k£2
200
£2,
2,
20,
200,
2000 kf2
or
20 M£2
V-S2
and V-S2
LO
250V dc or
250V ac
peak,
any range
Auto-ranging
*CA
UTION:
Do not
use
V-Sl
LOfor current
measurements,
as damage
to
the
multimeter
may
result.
1/77
2-3