Joulescope JS220 - Page 41

Revision 1.3 Joulescope JS220 User’s Guide Page 41 / 51
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Note that many of the test cases are for a 0.0 amp target current. In this setup, you can simplify the
setup and leave the Joulescope instrument disconnected, or optionally short the Joulescope Current
terminals with a banana jumper wire.
Numerous valid test equipment methods exist to generate and accurately measure the target current.
You may select a method that is appropriate for your equipment. The Joulescope JS220 has a very large
current range, and you will need to accurately measure from 18 µA to 3 A. You may need to employ
more than one method to cover the entire current range with a sufficient TUR. Possible methods
include:
10 A Range
Target Units Applied
Applied
Uncertainty
Expected
Accuracy
Test
Uncertainty
Lower Limit
As
Measured
Upper Limit
-3.00 A 0.00 0.0 0.00 0.00
-2.00 A 0.00 0.0 0.00 0.00
-1.00 A 0.00 0.0 0.00 0.00
-0.50 A 0.00 0.0 0.00 0.00
0.00 A 0.00 0.0 0.00 0.00
0.50 A 0.00 0.0 0.00 0.00
1.00 A 0.00 0.0 0.00 0.00
2.00 A 0.00 0.0 0.00 0.00
3.00 A 0.00 0.0 0.00 0.00
180 mA Range
Target Units Applied
Applied
Uncertainty
Expected
Accuracy
Test
Uncertainty
Ratio
Lower Limit
As
Measured
Upper Limit
-180.00 mA 0.15 0.0 -0.15 0.15
0.00 mA 0.15 0.0 -0.15 0.15
180.00 mA 0.15 0.0 -0.15 0.15
18 mA Range
Target Units Applied
Applied
Uncertainty
Expected
Accuracy
Test
Uncertainty
Ratio
Lower Limit
As
Measured
Upper Limit
-18.000 mA 0.015 0.0 -0.015 0.015
0.000 mA 0.015 0.0 -0.015 0.015
18.000 mA 0.015 0.0 -0.015 0.015
1.8 mA Range
Target Units Applied
Applied
Uncertainty
Expected
Accuracy
Test
Uncertainty
Ratio
Lower Limit
As
Measured
Upper Limit
-1.8000 mA 0.0015 0.0 -0.0015 0.0015
0.0000 mA 0.0015 0.0 -0.0015 0.0015
1.8000 mA 0.0015 0.0 -0.0015 0.0015
180 µA Range
Target Units Applied
Applied
Uncertainty
Expected
Accuracy
Test
Uncertainty
Ratio
Lower Limit
As
Measured
Upper Limit
-180.00 µA 0.15 0.0 -0.15 0.15
0.00 µA 0.15 0.0 -0.15 0.15
180.00 µA 0.15 0.0 -0.15 0.15
18 µA Range
Target Units Applied
Applied
Uncertainty
Expected
Accuracy
Test
Uncertainty
Ratio
Lower Limit
As
Measured
Upper Limit
-18.000 µA 0.030 0.0 -0.030 0.030
0.000 µA 0.030 0.0 -0.030 0.030
18.000 µA 0.030 0.0 -0.030 0.030
Current Measurement