1.5 Dc Current - Datron 1061 Calibration And Servicing Handbook

I
1.5 DC CURRENT
CALIBRATION
(No
DC Current
facility if Option
l2
is
fittedl
1.5.1
General
1.5.2
Equipment Required
A
DC Current calibration
source.
40004 Autocal
Standard
with Option
20.
e.g. Datron
4000/
The procedure
in
the table
below
shows
all that
is
necessary
to
completely 'AUTOCAL'
the DC
Current
function.
lf
just the DC Current or just
one range
of
DC
Current
is
to
be calibrated, then
step 11
lo
14
of the
DC
Voltage Calibration table should be
carried
out
first'
Then on
each DC
Current
range
iust a 'Zero' and 'Gain'
calibration
is
required.
lf
the 'DVM
Reading
After
Calibration'
is not
in
accordance
with the
table then
repeat
operation
of
the
same
'CALIBRATE' key is
permissible
to
improve
the
reading.
Where no
tolerance
is
shown
in this
column,
only
the
exact reading
quoted with
an
occasional
least signif
icant
digit
showing
is
to
be
expected.
1.5.3 Checking
Accuracy
after'AUTOCAL'
To
check
the
accuracy
after 'AUTOCAL'the
'Speci-
fícation Verification' section
of
the
Operating
Handbook
will
be useful.
lt
provides tables
for
quick
reference
of
accuracy
on all
ranges
and functions in
displayed digits'
DC
CURRENT
CAL]BRATION
TABLE
Remarks
Do
not select
'lnput
filter'
DVM
Reading
After
Calibration
*.0.000¡tA
È1
digit
+100.000¡¿A
*.2 digits
t.00000m4
*.1
digit
+1.00000m4
12
digits
*.0.0000m4
a.1
digit
+10.0000mA
*,0.000m4
+100.000m4
*.0.00m4
+1000.00m4
,CALIBRATE'
Key
'Zero'
'Gain'
'Zero'
'Gain'
Tero'
'Gain'
'Zero'
,
'Gain'
'Zero'
'Gain'
DVM
Setting
DC,I,.1
DC.I,.1
DC.I,1
DC,I,1
DC,I,1O
DC,I,1O
DCJ,100
DC,I,100
DC,1,1000
DC,I,1000
Calibration
Source
OutPut
0.000¡rA
+100.000¡rA
0.00000m4
+1.00000m4
0.0000m4
+
i
0.0000m4
0.000m4
+100.000m4
0.00m4
1000m4
Full
Ranç
I
+1000.00mA
Calibration
Operation
1mA
Ranç
Zero
1mA Full
Range
1mA
Range
Zero
lmA
Full
Range
1OmA Range
Zero
1OmA
Full
Range
100m4
Range
Zero
100m4 Full
Range
1000m4
Range
Zero
c.
ÞÎep
1
2
3
4
5
6
7
I
I
10