Fluke 8506A Instruction Manual page 83

8505A,
Table
2A-2.
Programming
Instructions (8505A,
8506A)
(eonf)
With
any
trigger
mode, no
command
string
is
examined
until
the
existing
reading or
recalled
value
is
returned.
Any
reading or
recall
value
commanded
(but
not
yet returned)
can be discarded by sending
the halt
(%)
corhmand.
If
a
continuous
trigger
mode
(T or T1)
is
in effect
when
(%) is
sent,
the multimeter configuration
is
changed
to
single
trigger
mode
(TO or T2),
and any
buffered
commands
(with a
terminating character) are executed.
AVERAGING
COMMAND
CHARACTERS
With the
8505A
(ail
functions)
and
the
8506A
(dc
volts,
ohms, dc
amps
only),
the "©''character
is
used
to
command
a
preset
sample and
filter
combination
for
each
function
and
range
to
optimize accuracy and
stability.
Averaging
also
provides
an
extra
digit
of resolution
in
several
ranges
(as defined
under
RANGE
COMMAND
CHARACTERS).
The
following
commands
are available:
1.
0:
Averaging
mode
enabled.
2.
OO
:
Average
mode
disabled.
Enabling
of
Average
mode
in
the situations defined above
sets
the multimeter
to
sample StO and
filter F.
With
Average
mode
enabled,
samples SI 1-SI 7
or
filter
F2 can
also be selected. Disabling
of
Average
mode
changes
the
sample and
filter
again
and occurs under any
of the following circumstances:
1.
Command
OO
is
sent.
Averaging
mode
is
disabled.
The
sample
is
set to
S7 and
the
filter is
set to FO.
2.
The
function
is
changed.
The sample
is
set
to
S7 and
the
filter is
set to FO.
If
an ac
volts
function
is initially
selected with the
8506A, only
filter
FO
is set.
If
a
change
is
made
between 8508A
ac
volts functions (VA,
VA1, VA2,
C,
Cl, C2), Averaging (extended
resolution)
is
retained.
3.
A
sample
or
filter
not
allowed
in
Average
mode
is
commanded.
If
S0-S9
is
commanded,
Average
mode
is
disabled, the
new
sample
setting
is
accepted and
the
filter
is
set to FO.
If
a
filter
other than F or F2
is
selected,
Average
mode
is
disabled, the
new
filter
is
accepted
and
the
sample
is
set to S7.
With
the
8506A
set for
any
of
the ac
volts functions,
Average
mode
is
not
available.
However, the (Tor
OO command
can
still
be used
to
enable or disable
extended
resolution (as defined
under
RANGE COMMAND
CHARACTERS).
In
this situation,
only the
sample and
filter
restrictions defined by the
8506A
ac
volts functions are applicable.
No
sample change can be made. Only
filter
FOor
F
(for input signals less
than 40 Hz) can be
selected.
If
a
sample change
is
attempted
or
an unallowed
filter
is
commanded,
a
momentary
error
is
set
and extended
resolution
is
retained.
Extended
resolution
in
8506A ac
volts
functions
is
disabled
if
theOO
command
is
sent.
If
a
change
is
made
between ac
volts functions,
extended resolution
is
retained with the
existing
filter
mode,
if
dc
volts,
ohms,
or
dc
amps
is
selected,
extended
resolution
(Average
mode)
is
disabled, the
filter is
not
changed, and
the
sample
is
set to S7.
Whenever
the
"0"
character
is
used (8505A
or
8506A
-
any
function),
the multimeter responds
with
the following output
format:
BINARY
OUTPUT FORMAT
Sign
Bit
Exponent
Sign
Bit