2606B System SourceMeter® Instrument Reference Manual
Appendix B: Calibration
2606B-901-01 Rev. B / May 2018
B-3
Recommended verification equipment
The following table summarizes recommended maximum allowable test equipment uncertainty for
verification points. Total test equipment measurement uncertainty should meet or be less than the
listed values at each test point. Generally, test equipment uncertainty should be at least four times
better than corresponding 2606B specifications.
Recommended verification equipment
Description
Manufacturer and
model
Accuracy
Digital multimeter
Keithley Instruments
Model 2002
or
Keysight 3458A
DC voltage
1
90 mV:
0.9 V:
5.4 V:
18 V:
±8 ppm
±5 ppm
±4 ppm
±6 ppm
DC current
2
90 nA:
0.9 mA:
9
µ
A:
90
µ
A:
0.9 mA:
9 mA:
90 mA:
0.9 A:
±430 ppm
±45 ppm
±25 ppm
±23 ppm
±20 ppm
±20 ppm
±35 ppm
±110 ppm
0.5 Ω, 250 W, 0.1%
precision resistor
Isotek
RUG-Z-R500-0.1-TK3
Resistance
3
0.5
Ω
:
±125 ppm
1 GΩ, 200 V, 1%
standard
Keithley Instruments
2600-STD-RES
Resistance
4
1 GΩ:
±250 ppm
1
Ninety-day specifications show full-range accuracy of recommended model used for specified
measurement point.
2
Id.
3
Resistor used to test 3 A range should be characterized to uncertainty shown using resistance
function of digital multimeter before use.
4
Standard is a guarded and characterized 1 GΩ resistor that is used to test the 100 nA current range.