KEPCO ABC-DM SERIES - Manual (Page 62)

4-4
ABC 040104
4.5 RESTORING PREVIOUS CALIBRATION VALUES
Each time the unit is calibrated, the previous calibration values are retained in non-volatile
memory. If it is determined that a new calibration is erroneous, the previous calibration values
can be restored.
1. If the unit is not in command entry status , press CLEAR or RESET to put the unit in com-
mand entry status.
2. Press MENU until LCD reads
GoTo Previous CALIB? 1
.
3. Press 1, then ENTER. LCD reads
Calibration ! PassWord
.
4. Enter 4-digit password and press ENTER. Previous calibration values are restored.
4.6 RESTORING FACTORY CALIBRATION VALUES
The original factory calibration values can be restored.
1. If the unit is not in command entry status , press CLEAR or RESET to put the unit in com-
mand entry status.
2. Press MENU until LCD reads
GoTo Factory CALIB? 1
.
3. Press 1, then ENTER. LCD reads
Calibration ! PassWord
.
4. Enter 4-digit password and press ENTER. Factory calibration values are restored.
4.7 SETTING FACTORY CALIBRATION VALUES
After a unit has been repaired, is operating correctly, and has been calibrated, the new calibra-
tion values should be saved as the new factory calibration values. This can only be accom-
plished via the GPIB interface.
To save the current calibration values to the non-volatile RAM as factory default values, send
the following strings via the GPIB interface:
SYSTEM:PASS:CENABLE xxxx
DIAG:NEW_FACTORY_CAL
where xxxx = the current password of the power supply.
4.8 CALIBRATION STORAGE
The ABC maintains the calibration tables in Flash Memory until a PACK is executed. There are
six calibration areas maintained in Flash Memory: Working, Prior, Oldest, Factory, Master, and
First.
The calibration can be copied to another area using the CAL:COPY command. The syntax is as
follows: CAL:COPY (source) (destination) where (source) and (destination) refer to the areas of
Flash memory where calibration data is stored, designated as: WORKing, PRIor, OLDest, FAC-
Tory, MASTer, FIRst. Source refers to the calibration area that is to be copied, destination to the
area that the calibration will be copied into.