Appendix C: Calibration and adjustment Series 2280 Precision DC Power Supply Reference Manual
C-16 077085503 / March 2019
Remote calibration procedure
Before performing a calibration by remote control, check the system date of the Series 2280. This can
be done by sending the following commands:
:SYSTem:DATE?
:SYSTem:TIME?
If the date is incorrect, the date and time need to be modified using the following commands:
:SYSTem:DATE <year>, <month>, <day>
:SYSTem:TIME <hour>, <minute>, <second>
Make sure to enter the correct date and time using the 24-hour clock. If the date is incorrect, it will not
save the proper date when calibration is saved using SCPI commands. For additional information
about this command, see :SYSTem:DATE (on page 7-115) and :SYSTem:TIME (on page 7-126).
To perform calibration from a remote interface:
1. Connect the Series 2280 to the computer using one of the following methods:
 Use a shielded IEEE-488 cable, such as Keithley Instruments Model 7007
 Use a standard LAN crossover cable to connect to the ethernet port
 Use a USB cable to connect to the USB port
2. Turn on the Series 2280 and allow it to warm up for at least one hour before performing
calibration.
3. Make sure the address of the Series 2280 is the same as the address specified in the program
that you will be using to send commands. For more information, refer to Remote communications
interfaces (on page 2-44).
4. Unlock the calibration function by sending the following command:
:CALibration:PROTected:STATe ON, "password"
The default password for calibration is KI002280.
During remote calibration, the front-panel display may not show the actual calibration source and
measurements. Also, only the local soft key is supported, and additional key selections are ignored.
Calibration must be disabled before local keys are active.
Refer to :CALibration:PROTected:STATe (on page 7-44) for additional details.
5. Send each calibration command with *OPC? appended to allow the program to know when the
operation is complete.
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