Tektronix KEITHLEY 2600B Series

Section 10: Calibration Series 2600B System SourceMeter® instrument Reference Manual
10-12 2600BS-901-01 Rev. F/August 2021
2. Characterize the 2634B, 2635B, or 2636B current ranges.
a. Connect guarded resistance standard.
b. Source the appropriate voltage for ± full-scale reading.
c. Wait 30 seconds for stable measurement.
d. Capture the 2634B, 2635B, or 2636B reported current measurement.
e. Verify output current accuracy for each of the currents for the 100 pA to 100 nA ranges listed in
the following table.
2634B, 2635B, and 2636B current measurement accuracy limits (100 pA to 100 nA)
Measure range
Source current
1
Current reading limits (1 year,
18 °C to 28 °C)
100 pA (not available on 2634B)
90.000 pA
89.785 pA to 90.215 pA
1 nA
0.90000 nA
0.89841 nA to 0.90159 nA
10 nA
9.0000 nA
8.9835 nA to 9.0165 nA
100 nA
90.000 nA
89.906 nA to 90.094 nA
1. As measured by precision digital multimeter. Use closest possible value and modify reading limits
accordingly if necessary. See Measurement limit calculations (on page 10-4).
Voltage source accuracy
Follow the steps below to verify that the 2600B output voltage accuracy is within specified limits. To
perform this test, you set the output voltage to each full-range value and measure the voltages with a
precision digital multimeter.
1. With the power off, connect the digital multimeter (DMM) to the 2600B output terminals using
4-wire connections, as shown below.
Figure 131: Connections for voltage verification