Fluke 8860A Operator's Manual page 20

8860A
REF.
NO.
Table
4-1.
Front Panel
Controls, Indicators,
and Connectors
"
I
FUNCTION
NAME
Mantissa Field
Exponent Field
Annunciators
POWER
Switch
REMOTE
Indicator
Control
Q4T
SENSE Connectors
GUARD
Switch
GD
(Guard)
Connector
The mantissa field is
a
5-1/2 digit
LED
display
complete
with
polarity
indicator
and
a floating
decimal
point.
Measurement
data
and other
operator data
is
displayed in
the
mantissa
field.
The
exponent
field is
a
two
digit
LED
display plus a
negative
sign.
It
is
used
for
displaying
error
codes,
limit
results
(H, L,
P),
and exponents of 10.
Exponents are
used
for entering, storing,
and
recalling data.
It
is
not
used
to
display basic
measurement data.
Measurement
units of
the selected
measurement
function are defined
by
the annunciators.
They
include:
V,
mV,
O, kQ,
and
MQ.
The
POWER
switch
is
a
push-push
switch
used
to
turn
the
8860A on and
off.
Lights
to indicate that
the
8860A
is
in
the
remote
operating
mode.
When
the light
is
off,
the
8860A
is
in
•the
local
mode.
All
8860A
measurement,
control,
and
data functions
are
governed
by these multi-function
push-button
switches.
The
switches are
divided into
functional
groups.
They
are:
Measurement
FUNCTIONS
Measurement
RANGE
Measurement
MODIFIERS
Measurement
SAMPLE
Local/Remote
CONTROL
Numeric
Data
STORE
Numeric Data
RECALL
NUM
and
FCN
(Alternate
switch
assignment
selectors,
NUM
enables gray assignments,
FCN
enables rust
assignments)
Two
recessed
banana
connectors
(HI
and
LO).They
are
used for
connecting the,
sense
leads
when
making
four-terminal resistance
measurements.
A
push-push
switch
used to
connect the
internal
guard
shield to the
GD
(guard)
connector
(EXT
GD)
or to
the
LO INPUT
connector
(NORM). The
GD
connector
is
open
when the
GUARD
switch
is
set to
NORM.
A recessed
banana
connector for
making external
g
yard connections
when
the
GUARD
switch
is
set to
ext
GD. The
GD
connector
is
open
when
the
GUARD
switch
is
set to
NORM;
4-2