Fluke 8506A Instruction Manual page 25

8 5 06
Table 2-1. Controls, Indicators,
and Connectors
(cont)
mm
NAME
DESCRIPTION
8
MEMORY
Push
Buttons
STORE
is
used
to
initiate
memory
entry
for
displayed values or
numeric
entries.
RECALL commands
display
of
a
memory
value.
HI/LO
are
used
when
storing or recalling
limit
values, or recalling
peak
values.
Average Push Button
AVG
toggles into/out of
Averaging
mode
in
V DC,
OHMS,
or
A
DC, and
enables extended
resolution
in
V
AC.
9 input
Terminals
Measurement
connections.
10
Guard
Selector
GUARD
is
connected
to
SENSE LO
when
disengaged
(out);
GUARD
is
floated
to
allow external connection
when
engaged
(in).
11
Ohms
Selector
Push
in
for
4-wire
ohms
measurements
using
OHMS
SENSE
(HI,
LO)
and
OHMS
SOURCE
(HI,
LO)
terminals.
Push again
to
disengage
for
2-wire
ohms
measurements
using
OHMS
SENSE
(HI,
LO)
terminals.
In
V
AC
functions,
use
of
the
4T
position
is
required
to
minimize
input
capacitance and
attain
accuracy
specifications.
The
Ohms
Selector
has no
effect
on
rear inputs.
12 Rear
Input Selector
Push
in to
connect
rear analog input terminals
and disconnect
front
terminals.
Push
again
to
disengage, reconnecting
front terminals
and
disconnecting
rear terminals. Position of
the switch can be sensed
remotely.
13
Current/Ohms Fuse Use
AGC
1.5A.
14
MODIFIER
Push
Buttons
SAMPLE
selects
the
number
of
samples-per-reading
in
V DC,
OHMS,
or
A
DC.
(Not
used
in
V
AC).
FILTER
selects the
filter
mode.
OFFSET
{
Mathematic Operations
SCALING
1
that
modify
the
EXT REF
(
reading value.
LIMITS
f
Special Operations
that
modify
PEAK
(the use
of
the reading.
15
Numeric Push
Buttons
When
enabled by
initially
pushing
the
STORE
button,
these
push
buttons
can
be used
to
enter numerics, exponents,
and
related polarity signs.
16
CONTROL
Push
Buttons
RESET
initiates
a
power-up
reset.
LCL/RMT
usage
depends on
the
remote
interface
in
use:
a.
If
the
IEEE
Interface
(-05)
is
used,
LCL/RMT
toggles
from remote
to
local,
but not
from
local to
remote,
b.
If
the
Bit Serial (-06)
or Parallel (-07) Interface
is
used,
LCL/RMT
toggles
between
local
and
remote.
17 Status
Annunciators
SAMPLE
flashes to
show
a
new
reading
in
progress.
FILTER
lights
whenever
a slow
filter is
selected.
AUTO
lights for
Autoranging.
EXT
lights
when
External Reference
is
enabled (disables Scaling).
AVG/(CAL)
lights (steady) for
Averaging
mode
or flashes
for
Calibration
mode.
ZERO
lights
when
Zero
mode
is
on
(V
DC
and
OHMS
only).
OFFSET
lights
when
Offset
mode
is
enabled.
SCALE
lights
when
Scaling
mode
is
selected (disables External
Reference).
PEAK
lights
when
Peak
mode
is
enabled.
REMOTE
lights
when
the
multimeter
is
controlled through
a
remote
interface.
2-3