Keithley 2601B Reference Manual

Appendix
B: Calibration Series 2600B System SourceMeter® Instrument
Reference Manual
B-12 2600BS-901-01 Rev. B / May 2013
Current measurement accuracy
Follow the steps below to verify that Series 2600B current measurement accuracy is within specified
limits. The procedure involves applying accurate currents from the Series 2600B current source and
then verifying that Series 2600B current measurements are within required limits.
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" in Current source accuracy (on page
B-7).
2. Select the multimeter DC current function.
3. Select the Model 2602B/2604B/2612B/2614B/2634B/2636B single-channel display mode.
4. Set the Series 2600B SMU to both source and measure current by pressing the SRC and then
the MEAS keys. Make sure the source output is turned on.
5. Verify measure current accuracy for each of the currents listed using the values listed in the
following table for your model number. For each measurement:
• Select the correct source range.
• Set the Series 2600B output current such that the digital multimeter reading is the value indicated in the
source current column of the table below. It may not be possible to set the current source to get exactly
the required reading on the digital multimeter. Use the closest possible setting and modify the reading
limits accordingly.
• If necessary, press the TRIG key to display readings.
• Verify that the Series 2600B current reading is within the limits given in the table below.
1. Repeat the procedure for negative calibrator currents with the same magnitudes as those listed.
Model 2601B/2602B/2604B current measurement accuracy limits
Source and measure range
1
Source current
2
Current reading limits (1 year,
18 °C to 28 °C)
100 nA
90.000 nA
89.855 nA to 90.145 nA
1 µA 0.9000 µA 0.89928 µA to 0.90073 µA
10
µ
A
9.0000
µ
A
8.9963
µ
A to 9.0038
µ
A
100 µA
90.000 µA
89.957 µA to 90.043 µA
1 mA
0.9000 mA
0.89962 mA to 0.90038 mA
10 mA 9.0000 mA 8.9957 mA to 9.0043 mA
100 mA
90.000 mA
89.962 mA to 90.038 mA
1 A
0.90000 A
0.89823 A to 0.90177 A
3 A 2.4000 A 2.3953 A to 2.4047 A
1. Measure range coupled to source range when simultaneously sourcing and measuring current.
2. As measured by precision digital multimeter. Use closest possible value, and modify reading limits
accordingly if necessary. See Measurement limit calculations (on page B-4).

Keithley 2601B Specifications

General

Brand	Keithley
Model	2601B
Category	Measuring Instruments
Language	English