Tektronix Keithley 2268 Series, Справочное руководство

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Calibration and Troubleshooting Series 2268 850 Watt DC Power Supplies Reference Manual
206 2268S-901-01 Rev. A / January 2015
CALIBRATION PROCEDURE FOR ISOLATED MODES
The main output and the non-isolated mode must be calibrated first.
Isolated Voltage Monitoring Calibration
Important: For maximum accuracy at a specific APG level, follow the
calibration procedure again but use the intended operating voltage level in steps
3 and 8.
To calibrate the isolated voltage monitoring:
1. Disconnect the load and connect the voltmeter to the output.
2. Connect the voltmeter to the isolated voltage monitoring output lines (J3.5 - J3.6).
3. Set the Voltage APG level to 4 V. The SCPI command is:
SYST:COMM:APR:LEV 4
4. Set the input source to local for voltage analog programming. The SCPI command
is:
SYST:REM:SOUR LOC
5. Set the main output voltage to 100% by sending the command:
SOUR:VOLT <ModelVolt>
or use the rotary adjust/Enter control.
6. Turn the main output to On by pressing the OUTPUT ENABLE Main button on
the front panel or send the command:
:OUTP ON
The OUTPUT ENABLE Main button will illuminate.
7. Enter the interactive calibration mode by sending the SCPI command:
CAL:MON:ISOL
8. Press the terminal keys - or + to reduce or increase the monitoring value. Adjust
the monitoring value displayed on the voltmeter that was setup in Step 1 to read as
close as possible to 4.000 V.
9. Press any key other than the + or - keys to exit from interactive calibration mode.