Amber 5500 - Error Conditions; Measurement Errors

L/
Amber model
5500
Owner’s Manual
Version
07
2.5 ERROR CONDITIONS
The
5500
has a
comprehensive
set of
error
trapping
programs
to avoid
ambiguous
results,
prevent
instrument
damage
or warn
the
operator
if invalid
operations
are at-
tempted.
The
errors are of several classes
depending
on their
origin
and are handled
according
to
an established level of
priority.
2.5.1
COMMAND
ENTRY ERRORS
These
result from an erroneous front
panel
operation by
the
operator
(for
example,
re-
questing
a
frequency
of 1
Volt).
They
are
cleared
by pushing
the CLEAR
key
and start-
ing again.
The
following
table lists the
errors
by
number.
Programmable
Audio
Measurement
System
Section 2
2.5.2 MEASUREMENT
ERRORS
These
errors result
from
invalidsignals
present
at the
input.
For
example,
with a
signal
below
-30 dBm
(30
mV),
no
distortion
reading
can be
obtained.
They
are
cleared
by
correcting
the
input signal
within
ap-
proximately
20 seconds of the
condition.
After this
time,
the condition
must be cor-
rected
and the CLEAR
key pushed.
For
example,
if a
signal
of
-60 dBV
(1 mV)
is
being
measured
in the
LEVEL mode
and
then one of the
distortion
modes is
selected,
error 21
will
be
displayed
(signal
level too
low
for
distortion).
If the
signal
is increased
in
level to
-30
dBV
or more
within
20
seconds,
the error will be
cleared
and a
distortion
reading
will be
displayed.
If
longer,
and the
signal
is
both raised and
the CLEAR
key
pushed,
the
distortion
reading
will be dis-
played.
If the
signal
amplitude
cannot be
increased,
a new
(valid)
function could be
selected,
LEVEL
for
example,
to
clear the
error.
2-33