22-14
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2600AS-901-01 Rev. B / September 2008
Section 22: Performance Verification
Series 2600A System SourceMeter® Instruments Reference Manual
Current measurement accuracy
Series 2600A current measurement accuracy 100nA and higher
Follow the steps below to verify that Series 2600A current measurement accuracy is within
specified limits. The procedure involves applying accurate currents from the Series 2600A current
source and then verifying that Series 2600A current measurements are within required limits.
1.
With the power off, connect the digital multimeter to the Series 2600A terminals as shown in
.
2.
Select the multimeter DC current function.
3.
Select the Model 2602A/2612A/2636A single-channel display mode.
4.
Set the Series 2600A to both source and measure current by pressing the
SRC
and
MEAS
keys, and make sure the source output is turned on.
5.
Verify measure current accuracy for each of the currents listed in
(Model
(Model 2611A/2612A), or
(Model 2635A/2636A).
For each measurement:
•
Select the correct source range.
•
Set the Series 2600A source output to the correct value as measured by the digital
multimeter.
•
If necessary, press the
TRIG
key to display readings.
•
Verify that the Series 2600A current reading is within the limits given in the table. It may
not be possible to set the current source to the required value. Use the closest possible
setting, and modify reading limits accordingly.
6.
Repeat the procedure for negative calibrator currents with the same magnitudes as those
listed in
, and
.
7.
Turn the output off, change connections as shown in
, then select the DMM volts
function.
8.
Repeat steps 4 through 6 for the 3A range (Model 2601A/2602A) or 1.5A range (Model
2611A/2612A/2635A/2636A). Calculate the current from the DMM voltage reading and
characterized 0.5
Ω
resistance value.
9.
For the Model 2602A/2612A/2636A, repeat the above procedure for the other channel.
Table 22-8
Model 2635A/2636A output current accuracy limits
2635A/2636A
Source
range
2635A/2636A output
current setting
Output current limits
(1 year 18C - 28C)
1nA
10nA
100nA
1uA
10uA
100uA
1mA
10mA
100mA
1A
1.5A
0.90000nA
9.0000nA
90.000nA
0.90000uA
9.0000uA
90.000uA
0.90000mA
9.0000mA
90.000mA
0.90000A
1.35000A
0.89665 to 0.90335nA
8.9815 to 9.0185nA
89.8960 to 90.0140nA
0.89903 to 0.90097uA
8.9923 to 9.0077uA
89.913 to 90.087uA
0.89943 to 0.90057mA
8.9913 to 9.0087mA
89.943 to 90.057mA
0.89775 to 0.90225A
1.34519 to 1.35481A
