Fluke 8505A Instruction Manual page 41

Go
To
Local-Lock Out Remote
(cont)
The
state of
the instrument,
when
changing from
remote
to local operation
will
be modified
as
follows:
1,
Ohms
fast
mode
will
be ignored.
2.
Scaling
mode
will
not
be
in
effect
(8500A
only).
$
3.
If
the high averaged samples
per reading
rate
was
in
effect,
the
samples
per reading
will
be
set to
2
7
(8500A
only).
The
state of
the instrument
when
changing from
local
to
remote
operation
will
be modified as
follows:
1.
Ohms
fast
mode
(Z1)
and
continuous reading
mode
will
be
resumed iftheDMM was
in
either
mode
when
place
into local.
2.
Any
error that occurred
during
local
operation
will
be stored
and
available for
recall.
c
—
j
High Speed Reading Mode
$
The
"I"
character
can be used
with the
Parallel
interface
{Option
-07) (and with the
IEEE-488
Interface
Option -05
in
the
8502A
only).
The
High Speed
Reading
mode
provides
a
shortened
3-byte binary two's
complement
format
response
representing the input
to
the
DMM's A/D
Converter. Speeds up
to
500
readings
per
second
are possible
in
this
mode
of operation.
True
readings
can be computed
from
this
response
using range
and
function dependent
factors
{refer to
Fluke Application Bulletin
25).
The
High
Speed
Reading
mode
is
suited
to
systems
with very
fast
processors,
to
use with stored readings,
or
to
applications not requiring
direct
numeric
conversions
(e.g.,
zero crossings or large deviations
from
a
nominal
value).
Use
of
the
"!"
character
will
place the
DMM
in
the
High
Speed Reading
mode
and
trigger the
first
reading.
Subsequent
readings
can be
triggered by sending
the
"?" character.
In
addition, for the
8502A equipped
with
the -08A Option, subsequent
readings can be
triggered
by sending
the
TTL
pulse with the
External Triggering
Mode ("Q"
or "Q1"). The
High Speed Reading
mode
can be aborted
at
any time by
transmitting a character
other than "?"
when
a reading
is
to
be
triggered.
The
character sent
in
this
case
will
do
nothing
more
than
cause
the
DMM
to exit
the
High Speed
Reading mode.
2A-5