Spec Mode - Datron 1061A User Handbook Manual
Digital voltmeters
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Also See for 1061A:
- Service handbook (202 pages) ,
- Calibration and servicing handbook (197 pages)
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When
the
test
routine
is
completed
successfully,
the
instrument
will
retain
the
'PASS'
indication.
Pressing 'Hold'
will
return the
instrument
to
the
last
selected
range
and
function but
all
mode
and
compute
functions are
cancelled.
When
the
'Test'
routine
finds
an
error
in
the internal
checks,
an Error message
will
be
held
on
the display.
To
clear
this
state
and
continue with
the
self test
routine,
press
'Man'.
Refer
to
Calibration
and
Servicing
Handbook
for fault finding
procedure.
An
Error
5
indicates
DC
failure
Error 6
indicates
k
£2
failure
Error
7 indicates
AC
failure
Error
8
indicates
I
failure
FAIL
indicates
Calibration
memory
error.
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Depressing
the
'Spec'
key causes
the
instrument
to
compute and
display
an
uncertainty
value
that
relates to
the
last
measurement
made.
The
instrument
contains
a
table
of
the
measurement
specification
for
every function
and
range,
and
the
maximum
limits
of
uncertainty
for
the
last
displayed
measurement
is
displayed
as a
fraction
of
that
measurement.
This
uncertainty value
is
only
available for
the
measurement
itself,
not
for
the
computed
value of
the
reading
(see
'Computation
Facility').
Nor
is
it
available
for
Average
Mode
readings
(1071
only
-
see
Average
Mode)
or
when
in
Superfast
mode
(1061/ 1061
A
only
-
see
Sections 4
&
5).
The
uncertainty value of
dB
measurements can be
displayed.
In
this case,
it
is
expressed
in
dBs.
The
uncertainty
is
calculated
according
to
the
setting
of the calibration interval
switch
on
the rear
panel so
that
the instrument's specification
is
examined
in
the
area
that
corresponds
to the
chosen
re-calibration
interval.
The
display
is
preceded
by
a
+/
—
indication
and
is
in
ppm
or
%,
depending
on
magnitude. Very
large
errors,
such
as
near zero
readings, are displayed
as
a
message
(Error
3).
Depressing
the
'Spec'
key
again,
returns
the
instrument
to
normal
operation.
3-4
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