Current Source Accuracy - Keithley 2601B Reference Manual

Series 2600B System SourceMeter® Instrument Reference Manual

Current source accuracy

Follow the steps below to verify that the Series 2600B output current accuracy is within specified
limits.
An alternate procedure for 100 nA current accuracy is shown in the 1 nA to 100 nA Output current
accuracy procedure for the Model 2634B/2635B/2636B.
1. With the power off, connect the digital multimeter to the Series 2600B terminals as shown in the
figure titled "Connections for 100 nA to 1 A current ranges" located at the end of this procedure.
2. Select the multimeter DC current measuring function.
3. Select the Model 2602B/2604B/2612B/2614B/2634B/2636B single-channel display mode.
4. Press the SRC key to source current, and make sure the source output is turned on.
5. Verify output current accuracy for each of the currents for the 100 nA to 1 A ranges (for Model
2634B/2635B/2636B, verify currents for the 1 µA to 1 A ranges) using the values listed in the
following table for your model number. For each test point:
•
Select the correct source range.
•
Set the Series 2600B output current to the correct value.
•
Verify that the multimeter reading is within the limits given in the table below.
Model 2601B/2602B/2604B output current accuracy limits
Source range
100 nA
1 µA
10 µA
100 µA
1 mA
10 mA
100 mA
1 A
3 A
2600BS-901-01 Rev. B / May 2013
Output current setting
90.000 nA
0.90000 µA
9.0000 µA
90.000 µA
0.90000 mA
9.0000 mA
90.000 mA
0.90000 A
2.40000 A
Appendix B: Calibration
Output current limits
(1 year, 18 °C to 28 °C)
89.846 nA to 90.154 nA
0.89893 µA to 0.90107 µA
8.9923 µA to 9.0077 µA
89.913 µA to 90.087 µA
0.89943 mA to 0.90057 mA
8.9913 mA to 9.0087 mA
89.943 mA to 90.057 mA
0.89775 A to 0.90225 A
2.39456 A to 2.40544 A
B-7