Fluke 8505A - 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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