HP 3468A - Page 20

Table 2-2. 346BA Messages (Cont'd)
CALIBRATION MESSAGE (see the 3468A Service Manual)
INV CAL F&R
This
indicates
that
the
present
function
and
range
does
not
allow
calibration
constants
to
be
calculated.
That
is,
it
is
either
an
invalid
range
or
it
uses
a
calibration
constant
calculated by another function and range.
INV CAL SIG
Indicates
that
the
3468A
cannot
calibrate
to
the
applied
input
signal.
INV CAL ZERO
This
means
that
the
zero
calibration
constant
is
not
valid
when
attempting
to
calibrate
the gain.
ENABLE CAL
The
CAL
ENABLE
switch
must
be
set
to
the
CAL
position
(down)
in
order
to
do
a
calibration.
INV CAL NUM
The number put in the display is not an acceptable number to calibrate to.
CAL RAM BAD
The calibration RAM did not accept the data written to it.
GENERAL USAGE MESSAGE
ADDRESS 22
This
is
the
HP-IL
address
of
the
3468A.
The
actual
address
of
the
the
instrument
will
depend
upon
its
position
in
the
interface
loop.
See
Chapters
Ill
and
IV.
The
factory
preset address is 22.
OVLD
This
stands
for
overload
and
indicates
that
the
input
is
too
large
for
that
particular
range.
INVALID
The
selected
combination
of
range
and
function
is
not
a
valid
combination.
This
error
can
only
occur
when
the
3468A
is
being
remote
programmed.
Under
computer
control
the
3468A
can
display
your
own
user
messages
of
up
to
12 characters.
Refer to Chapter Ill or Chapter IV, for more information
on this.
Commands
D2text Places the message “text” into the display
D1
Returns
the
3468A
to
NORMAL
display.
When
you
are
displaying
measurement
results
(NORMAL
mode),
you
also
have
a
choice of the number of digits displayed,
i.e., resolution
of the reading. This not
only has a great effect on the reading rate but also affects the Normal Mode Re-
jection (NMR).
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