Keithley 2601B Reference Manual page 745

Series 2600B System SourceMeter® Instrument Reference Manual
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 Series 2600B specifications.
Recommended verification equipment
Description
Digital multimeter
0.5 Ω, 250 W, 0.1%
precision resistor
1 GΩ, 200 V, 1%
standard
1. Ninety-day specifications show full-range accuracy of recommended model used for specified measurement
point.
2. Id.
3. Id.
4. Resistor used to test Model 2601B/2602B/2604B 3 A range and Model
2611B/2612B/2614B/2634B/2635B/2636B 1.5 A range only should be characterized to uncertainty shown using
resistance function of digital multimeter before use.
5. Standard is a guarded and characterized 1 GΩ resistor that is used to test Model 2634B/2635B/2636B 100 pA to
100 nA current ranges.
2600BS-901-01 Rev. B / May 2013
Manufacturer/model Accuracy
Keithley Instruments
DC voltage
Model 2002
(2601B/2602B/2604B)
or
Agilent 3458A
DC voltage
(2611B/2612B/2614B/2634B/
2635B/2636B)
DC current
Isotek
Resistance
RUG-Z-R500-0.1-TK3
Keithley Instruments
Resistance
Model 2600-STD-RES
1
90 mV:
0.9 V:
5.4 V:
36 V:
2 190 mV:
1.8 V:
18 V:
180 V:
90 nA:
0.9 mA:
3
9 µA:
90 µA:
0.9 mA:
9 mA:
90 mA:
0.9 A:
4 0.5 Ω:
5
1 GΩ:
Appendix B: Calibration
±8 ppm
±5 ppm
±4 ppm
±6 ppm
±5 ppm
±4 ppm
±6 ppm
±6 ppm
±430 ppm
±45 ppm
±25 ppm
±23 ppm
±20 ppm
±20 ppm
±35 ppm
±110 ppm
±125 ppm
±250 ppm
B-3