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8505A/8506A
Tab!®
2A-2.
Programming
Instructions
(S505A,
6506A)
(cont)
2.
Initial
function
was
V, Z,
or
I
—
New
function
is
ac
or
ac+dc
volts:
a.
Filter
mode
off
(FO)
is
set.
b.
No
sample
setting
is
allowed.
c.
Zero
mode
is
off.
3.
Initial
function
was
ac
or
ac+dc
volts
—
New
function
is
V, Z,
or
I:
a.
Filter
mode
on
(F)
or
off (FO)
is
retained.
b.
Sample S7
is
set.
4.
Initial
function
was
ac
volts
—
New
function
is
ac
volts:
a.
If
the
initial
and
new
functions are
both ac
volts (or
both
ac+dc
volts),
manual
ranging
mode
is
retained
at
the
same
range, or
autoranging
is
retained
(starting at
the
same
range).
b.
If
the
change
is
between
an ac
volts
function
(VA,
VA1
,
VA2) and an
ac+dc
volts
function
(C,
Cl
C2),
autoranging
is
automatically enabled.
c.
For
all
types
of
change
(ac to
ac,
ac+dc
to ac,
ac
to
ac+dc,
or
ac+dc
to
ac+dc), Averaging
mode
(extended
resolution)
and
all
other
modes
and
values are
retained.
No
sample change
is
allowed
in
any
8506A
ac
volts
function.
The
following
commands
are
used
when
initially
selecting
an
8506A
ac
volts
function:
1.
V
A:
VAC
Normal
2.
V
A
1
:
V
AC
Enhanced
3.
V
A
2
:
V
AC
High
Accuracy
4.
C
:
V
AC
Normal
(DC
Coupled)
5.
C
1
:
V
AC
Enhanced
(DC
Coupled)
6.
C
2
:
V
AC
High
Accuracy
(DC
Coupled)
NOTE
AC
volts
function
commands
used
with the
8502A/AT
are
compatible
with the
8506A. However,
the
six
function
commands
mentioned above
allow
for
faster,
direct
entry
into
the desired
8506A
ac
volts
mode.
If
the
8506A
is
already
in
an ac
volts
function,
an abbreviated
command
can be used
when
selecting
either of
the other
two
ac
volts functions.
When
selecting
between ac
or
dc
coupling
for
ac
volts,
the
full
command
string
mentioned
above must be
used.
The
abbreviated
commands
are as
follows:
1.
SO:
VAC
Normal
2.
S
1
:
V
AC
Enhanced
3.
S
2
:
V
AC
High Accuracy
i?
2A-24
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