Tektronix Keithley 2268 Series, Справочное руководство

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Series 2268 850 Watt DC Power Supplies Reference Manual Calibration and Troubleshooting
2268S-901-01 Rev. A / January 2015 205
Non-isolated Resistive Programming of Current Calibration
Important:
For maximum accuracy at a specific APG level, follow the
calibration procedure again but use the intended operating resistance level in
steps 2 and 3.
To calibrate the non-isolated resistive programming of current:
1. Short the main output with a shunt. Connect a multimeter to measure the voltage
across the shunt.
2.
Connect the 4.000 kΩ resistor to the non
-isolated connector (APG -J1), one
terminal to resistive programming of current (J1 .12) and voltage programming of
current (J1.10), and the other terminal to the common (J1.7).
3.
Set the resistive APG level to 4 kΩ The SCPI command is:
SYST:COMM:APR:LEV:CURR 4
4. Set the input source as Resistive Non-Isolated for Current Programming. The
SCPI command is:
SYST:REM:SOUR:CURR ARES
5. 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.
6. Enter the interactive calibration mode by sending the SCPI command:
CAL:OUTP:ANAL
:CURR:RES
7. Press the terminal keys - or + to reduce or increase the main output current value.
Adjust the main output current to 100%.
8. Press any key other than the + or - keys to exit from interactive calibration mode.