Fluke 8505A Instruction Manual page 18

8505A
RESET
LCL/RMT
EXT REF
LIMITS
PEAK
SAMPLE
CAREFUL:
The RESET
push
button
is
powerful:
all
modes
and
stored values (other
than
calibration
factors) are
lost
if
RESET
is
pressed.
Once RESET
is
used, the multimeter assumes
the
Power-Up
configuration (without actual
power
loss).
Temporary
zero values are
replaced
with zero values
stored
in
Calibration
Memory.
Depending on
the
remote
interface being used, pushing
the
LCL/RMT
button
may
cause one
of
three
multimeter responses.
1.
)
If
the -05 IEEE
Interface
is
installed,
LCL/RMT may
be used
to
command
local (front
panel) control only
if
the multimeter
is
already
in
remote
(REMOTE
annunciator
lighted).
The
push
button has
no
effect
if
the
multimeter
is
already
in
local.
2.
)
If
the -06
Bit
Serial
Interface or
the -07
Parallel interface
is
installed.
LCL/RMT may
be
used
to toggle
into/out of
local control
at
any
time.
3.
)
If
no
remote
interface
is
installed, use
of
LCL/RMT
causes
a
latching error condition.
MODIFIERS
EXT REF LIMITS PEAK SAMPLE
FILTER
The
EXT
R EF
button toggles
into/out of
the External Reference mode.
Either External Reference
or
Scaling
may
be
enabled: selection
of
one
mode
disables the
other. After
power-up
or
reset,
RECALL
EXT REF
can be used
to identify
the software
version.
NOTE
The
external reference voltage, applied
through
the rear
input connector, can be read
in
the display
while
EXT REF
is
held
depressed.
The LIMITS
push
button toggles into/out of the Limits
mode
without changing
stored
limits values.
A
display of
HI,
LO,
or
PASS
denotes use
of the Limits mode.
The
PEAK
push
button toggles
into/out of the
Peak mode.
While
in
the
Peak mode (PEAK
annunciator
lighted), a
continually updated
record
of
the highest
and
lowest reading values
is
stored.
These
values are
also
held
in
memory
after
the
mode
is
disabled. Reentry
into the
PEAK
mode
erases
previously recorded values
and
begins
a
new
recording.
Different
reading
rates
can be
specified
by
selecting the
number
of
samples averaged
per
measurement. There
are
two methods
for
making
this
selection.
1.)
The
SAMPLE
button can be pushed
to
toggle between two
commonly
used
reading
rates:
slow
(1.9
readings-per-second,
SAMPLE
annunciator
flashes slowly)
and
fast
(7.5
readings-per-second,
SAMPLE
annunciator
flashes
rapidly).
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