Datron 1061 - Page 15

1.4.4 General
The
procedure
in
the
table
opposite
is
all
that
is
necessary
to
completely
'AUTOCAL',
the
AC
voltage
function.
On each
,rng.
¡rrt
a
'Zero'
,'Gain'
and
'AcHf'
calibration is
required.
lf
the
'DVM
Reading After
Calibration'
is
not
in
accordance with the table, repeat
operation
of
the
same
'CALIBRATE' key is
permissible
to
improve
the
readings'
This rryill be necessary with the AcHf
key.
Note: To
reduce the effect of
noise
at
low
input
levels'
AC
zero calibration
is carried out
at
0.1%
Range;
and
for
100mV Range
zero
(steps
1 &
2
of
the
table),
Guard
is
connected
to Lo using
a copper
shorting
link'
!
7A
1.4
AC
VOLTAGE
CALIBRATION
-
10614
OPTION
12
ONLY
1.4.5
Equipment
Required
A
copper shorting
link
and an AC
calibration
source
e.g.
Datron
4200
Autocal
AC Standard.
1.4.6
Checking
Accuracy
after'AUTOCAL'
To
check the
accuracy after'AUTOCAL'the
'Specif'
ication
Verification'
sect¡on of
the User's
Handbook
can
be employed.
lt
describes the use of
'Spec'
mode
to
verify
the
accuracy
of the instrument,
also
providing
a
report
sheet
'master copy'
for
compilation
of
permanent
records'
o
I