Fluke 8021B - Page 23

8021
B
Table
2-2. Model
8021
B
Overload
Limits
SELECTED
FUNCTION
SELECTED
RANGE
INPUT
CONNECTIONS
MAX.
INPUT
OVERLOAD
Voltage
200
mV,
2
V,
2V,
200V,
750V
ac,
1000V ac
V/Q
and
COMMON
1000V dc or
peak ac on
dc ranges,
1000V dcor
750V rms on ac
ranges
-
15
seconds
max
above 300V
on 200
mV
ac
range.
Current
2
mA, 20
mA,
200
mA,
2000
mA
mA and
COMMON
2A max.
Fuse pro-
tected
in circuits
with
open voltage
<600V
dc/rms
ac.
Do
not
use
above 600V
dc
or rms ac.
Resistance
or
Continuity
2000,
2
kQ, 20
kQ,
200
kQ,
2000 kQ,
20
MQ
V/Q
and
COMMON
500 dc
or rms
ac.
15
seconds
maximum
above
300V.
ANY
ANY
COMMON
500V dc/rms
ac
with
respect to
earth.
4. If
the display
reads
overrange 1
followed by
blank digits, one or
both
fuses need
replacement. See
the
following
paragraphs for
replacement
instructions.
2-19.
Fuse
Replacement
2-20.
All
ac and dc
current
ranges are
fuse protected.
Two series fuses
are used:
|,
FI,
2A/250V,
replaceable
at the
battery compartment
(See section
2,
Battery
and/or Fuse
Installation/
Replacement.)
2. F2,
3
A/
600V backup
fuse (See
section
4,
Battery/ Backup Fuse
Replacement.)
2-21.
The
Display
2-22.
The
Front
Panel
Display on
your 8021B is a
3-1/2 digit Liquid Crystal
Display.
The
The
1
/
2
digit is
the
extreme left
digit location. So,
the displayed value can
range from
000
through
1999. For
convenience, in
discussion, the 1999
is rounded to 2000.
The
decimal
point
position is
determined
by
selected range and is not
affected by the
measurement function
selecied.
Polarity,
on the other hand is only used for
the dc
voltage
and
current
measurement
functions. A
minus
sign indicates that the
input signal is
negative with
respect to
the
COMMON
input terminal.
Positive inputs are
indicated
by
the
absence of the
minus
sign.
2-7