Datron 1062 - Page 18

1.6
AC
CURRENT
CALIBRATION
(In conjunction
with
Option 10
only)
9
1.6.1
General
The procedure
in
the table
below
shows
all that
is
required to
completely
'AUTOCAL'
the AC
Current
function.
If just
the AC
Current or
just
one range
of AC
Current is to
be
calibrated,
then steps
1, 2,
11
& 12
of
the
Option
10 AC
Voltage
Calibration
table must
be
carried out
first. Then on
each
range just a
'Zero' and
'Gain'
calibration
is
required.
If
the
'DVM
Reading
After
Calibration'
is not
in
accordance
with
the
table
then repeat
operations of the
same
'CALIBRATE'
key
is
permissible to
improve the
reading.
1.6.2
Equipment
Required
An AC
Current
calibration
source at
1kHz. e.g.
Datron
4200
Autocal
AC
Standard
with
option 30.
1.6.3
Checking
Accuracy
after
'AUTOCAL'
To
check
the
accuracy
after
'AUTOCAL'
the
speci-
fication
Verification
section
of the
Operation
Handbook
will be
useful. It
provides
tables
for
quick
reference
of
accuracy
on all
ranges
and
functions
in
displayed
digits.
AC CURRENT
CALIBRATION
TABLE
Calibration
Operation
Calibration
Source
Output
DVM
Setting
'CALIBRATE'
Key
DVM
Reading
After
Calibration
Remarks
DC
coupled
AC
Zero
No
connections
to
DVM input
terminals
I,DC,AC,.1
'Zero'
O.OOOmA
±5
digits
Do not
select
'Input
filter'
Hi
.1mA
Range
Zero
n
I,AC,.1
Check
only
<±100
digits
Cancel DC
coupled
H
1mA
Range
Zero
ft
I,DC,AC,1
'Zero'
.00000mA
±5
digits
10mA Range
Zero
ft
I,DC,AC,10
'Zero'
0.0000mA
±5
digits
5
100mA
Range
Zero
ft
I,DC,AC,100
'Zero'
O.OOOmA
±5
digits
6
1000mA
Range
Zero
ft
I,DC,AC,1000
'Zero'
0.00mA
±5
digits
7 .1mA
Full
Range
IOOmA,
1kHz I,DC,AC,.1
'Gain'
100.000/uA
±10
digits
8
1mA
Full
Range
1mA,
1 kHz
I,DC,AC,1
'Gain'
1.00000mA
±10
digits
9
10mA
Full
Range
10mA, 1
kHz I,DC,AC,10
'Gain'
10,0000mA
±10
digits
10
100mA
Full Range
100mA, 1
kHz I,DC,AC,100
'Gain'
100,000mA
±10
digits
11 1000mA
Full Range
1A,
1
kHz I,DC,AC,1000
'Gain'
1000.00mA
±10
digits