Keithley 2280 Series - Required Equipment

Series 2280 Precision DC Power Supply Reference Manual Appendix C: Calibration and adjustment
077085503 / March 2019 C-3
Required equipment
This section lists the required equipment you need for voltage and current calibration procedures.
Alternate equipment may be used, as long as the equipment has specifications at least as good as
those listed in the table.
You could either select an electronic load or a resistor for calibration.
Equipment
Required specifications
Uncertainty
Digital multimeter
 7½ digits
 90 day +/-5 ºC uncertainties, see the following table
See NOTE below.
Electronic load
 Constant current (CC): 0.001 A to 6 A
 Constant voltage (CV): 0.3 V to 60 V
See NOTE below.
Resistor (R-Load)
 300 Ω
 Temperature coefficient/ power change:
Vout / (R +∆R) <10% current measure specifications
See NOTE below.
Shunt
 5.05 Ω and 0.05 Ω
 Temperature coefficient/ power change
 Vout / (R +∆R) <10% current measure specifications
See NOTE below.
The table lists detailed specifications for digital multimeter.
Range
PMM of Reading
PMM of Range
Resolution
0.2 V
25
6
10 nV
2.0 V
18
2
100 nV
200 V
27
3
10 µV
20 Ω
52
7
20 µΩ
Refer to the manufacturer's specifications to calculate the uncertainty, which will vary for each test
point.