Specifications

112 Test Capabilities and System Requirements Appendix A
System Capability
Driver Current
Leakage Sample
The system capability output driver current leakage test uses the Agilent
E6171 Measurement Control Module Force Voltage, Measure Current
functionality. As shown in Figure A-2, the DvmHi input is connected
through a disconnect relay to the V/I source. The output of the V/I source is
connected through ABus4 and the Agilent E6172A 32-Pin Matrix Module
row 32. The output driver transistor is biased open (turned off) and the
expected leakage is less than 1 milliampere.
The accuracy of the Agilent E6171 Measurement Control module may be
determined from the Agilent E6171 Measurement Control Module User’s
Manual, Appendix A. Using the section headings, identify the module
subfunction: Voltage Source (Low Voltage: Force V, measure I): Current
Sense accuracy (2 mA range). That Agilent E6171 specification is: ±(0.3%
of reading +.0007 mA). The voltmeter accuracy is included in the preceding
specification and does not need to be added in the following calculated
system accuracy capability calculation.
The calculated system accuracy capability is:
±[(0.3% of reading of 1 mA)+ 0.0007 mA] = ±[(0.003 *1) + 0.0007] =
±0.0037 mA
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