Adjustment
Program
The
adjustment
program
listed
in T
able 1-1
is required
for the
adjustments.
Using the
program,
the
computer
controls
the
4339B
and
the other
pieces of
equipment to
obtain the
adjustment
data,
and
stores
the
data
in
the 4339B
's internal
EEPROM, A2U1.
The
adjustment
program
runs
on
the
computer
listed
in T
able 1-1.
The program
should be
installed
into
your
computer
according to
the procedure
described in
\Program Installation
".
T
o
start
the
program
after
it
has
been installed,
refer to
\Program Execution
".
Figure
2-1
shows
the
adjustment
program
ow.
The following
lists the
brief
explanation
for
each
menu
item.
At
the
end
of each
adjustment, the
program writes
the
obtained
adjustment
data
both
to
the
4339B
internal
EEPROM and
to the
unit-serial-number dependent
le on
the
disk.
Figure
2-1.
A
djustment
Program
Flow
INITIAL
SETUP
denes
the
standards'
calibration values
. Update
the calibration
values
as
necessary
.
Source
V
oltage
Adjustment
obtains
the
data
to
adjust
the
actual
source output
voltage
equal
to the set value
. This adjustment should be performed
if the
performance test, Source V
oltage A
ccuracy T
est, fails
.
Ammeter A
djustment obtains two kinds of the ammeter related factor
, the input resistance
and scaling, and a voltage source related factor
, the output resistance
.
This adjustment should be performed if any performance test fails
.
Rewrite EEPROM
writes the adjustment data, which is stored in a unit-serial-number
dependent le
, to the EEPROM. Only the adjustment data of
previously adjusted item(s) will be written.
Note
Make sure that the correct line frequency (50 or 60Hz) has been selected in the
\UUT: 4339B" window preceding the Main Menu. This selection will improve
the adjustment data accuracy.
Adjustments 2-3