Keithley 2280 Series - Check DC Current Readback Accuracy (10 a and 1 a Ranges)

Series 2280 Precision DC Power Supply Reference Manual Appendix B: Verification
077085503 / March 2019 B-31
Check DC current readback accuracy (10 A and 1 A ranges)
Equipment required
AC power source
High current 18 AWG wire
DC voltmeter
High accuracy 0.05 Ω shunt
Current shunt resistor cabling
The Series 2280 has the following ranges to verify: 10 A, 1 A, 100 mA, and 10 mA range. Follow the
procedures described below to check the current readback accuracy on 10 A and 1 A range. For
other ranges, refer to Check DC current readback accuracy (100 mA and 10 mA ranges) (on page B-
33).
Set up the equipment as shown in the following figure.
Figure 108: Current readback accuracy on 10 A and 1 A ranges test setup
Make sure the warm-up criteria have been met, as described in the Performance verification
conditions.