Recovering From Calibration Problems
You can encounter serious calibration problems if you cannot determine a calibration password that has been changed or the power supply is severely out of calibration. There are jumpers inside the power supply that permit the calibration password to be defeated and allow the original factory calibration constants to be restored. These jumpers are explained in the Service Manual.
Calibration Error Messages
Error messages that can occur during calibration are shown in Table
Table B-3. GPIB Calibration Error Messages
Error
No.
1
2
3
4
5
Meaning
CAL jumper prevents calibration1 CAL password is incorrect CAL mode is not enabled
Incorrect computed readback constants Incorrect computed programming constants
Error | Meaning |
No. |
|
6Wrong CAL command sequence
7Incorrect state (CV/CC) for this command
1This is a hardware disable. See the power supply Service Manual.
Calibration Over The GPIB
You can calibrate the power supply by using SCPI commands within your controller programming statements. Be sure you are familiar with calibration from the front panel before you calibrate from a controller. The SCPI calibration commands are related to the front panel calibration controls as follows:
Front Panel
Command
Corresponding SCPI
Command
CAL:STAT {ON1},<password>
CAL:STAT {OFF0}
CAL:PASS <NRf>
CAL:VOLT:LEV {MINMAX} CAL:VOLT[:DATA] <Nrf>
Front Panel
Command
Corresponding SCPI
Command
CAL:CURR:LEV {MINMAX} CAL:CURR[:DATA] <NRf>
CAL:CURR:MON<newline> CAL:CURR:DATA <NRf>
CAL:SAVE
CAL:VOLT:PROT
Calibration Example
A sample calibration program is given at the end of this appendix. If your system is Agilent BASIC, you can use the program with very little modification. Otherwise, use it as a guide for writing your own program.
100 Calibration
