2606B System SourceMeter® Instrument Reference Manual
Appendix B: Calibration
2606B-901-01 Rev. B / May 2018
B-7
2. Select the multimeter DC current measuring function.
3. Select the 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 using the
values listed in the following table. For each test point:
Select the correct source range.
Set the 2606B output current to the correct value.
Verify that the multimeter reading is within the limits given in the table below.
Output current accuracy limits
Source range
Output current setting
Output current limits
(1 year, 18 °C to 28 °C)
100 nA
90.000 nA
89.846 nA to 90.154 nA
1 µA
0.90000 µA
0.89893
µ
A to 0.90107 µA
10 µA
9.0000 µA
8.9923
µ
A to 9.0077 µA
100 µA
90.000 µA
89.913
µ
A to 90.087 µA
1 mA
0.90000 mA
0.89943 mA to 0.90057 mA
10 mA
9.0000 mA
8.9913 mA to 9.0087 mA
100 mA
90.000 mA
89.943 mA to 90.057 mA
1 A
0.90000 A
0.89775 A to 0.90225 A
3 A
2.40000 A
2.39456 A to 2.40544 A
6. Repeat the procedure for negative output currents with the same magnitudes as those listed.
7. Turn the output off, and change connections as shown in the figure titled "Connections for 3 A
current range," above.
8. Select the DMM DC volts function.
9. Repeat steps 4 through 6 for the 3 A range. Calculate the current from the DMM voltage reading
and the characterized 0.5
Ω resistance value:
I=V/R.
10. Repeat the above procedure for the other channel.
Current measurement accuracy
The procedure involves applying accurate currents from the 2606B current source and then verifying
that 2606B current measurements are within required limits.
To verify that 2606B current measurement accuracy is within specified limits:
1. With the power off, connect the digital multimeter to the 2606B terminals as shown in the figure
titled "Calibration connections for 100 nA to 1 A current ranges" in
2. Select the multimeter DC current function.
3. Select the single-channel display mode.
4. Set the 2606B SMU to both source and measure current by pressing the
SRC
and then the
MEAS
keys. Make sure the source output is turned on.
