Adjustment Program; Adjustment Program Flow - Agilent Technologies 4339B Service Manual

Adjustment Program

The adjustment program listed in Table 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 Table 1-1. The program should be
installed into your computer according to the procedure described in \Program Installation". To
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.
INITIAL SETUP
Source Voltage
Adjustment
Ammeter Adjustment
Rewrite EEPROM
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.
Figure 2-1. Adjustment Program Flow
de nes the standards' calibration values. Update the calibration
values as necessary.
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 Voltage Accuracy Test, fails.
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.
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.
Adjustments 2-3