Appendix B: Kelvin (4W) S530 system diagnostics
S530
Diagnostic Manual
Figure 43: SMU sense test connection example
Basic continuity test
Execute the basic continuity test by connecting two SMUs to the same row, forcing 1mA from the first
SMU, forcing 0V from the second, and then measuring the voltage and current with the first SMU. If
the resistance is higher than 2*1Ohm (determined by calculating the measured voltage and current),
Fail will display in the ACS GUI test log and in the diagnostic report in the following directory:
C:\ACS\Projects\Diagnostic\Reports
1. In the next Figure, N represents the number of SMUs. The loop should be SMU1 to SMU (N-1),
because the last SMU was tested by previous loops.
2. For example, when SMU2 is the current instrument under test and the total number is seven, the
test support SMU loop should be SMU3~SMU7 and GNDU.
Figure 44: SMU continuity test flow chart
Basic continuity force test
During the short test, SMUs are used in the 2W mode. The test flow is the same as the instrument
card 2W tests..
Sense test
During the sense test, the SMUs are used in the 4W mode. For high-voltage systems, that use the
Model 7072 HV cards, crossbars on rows of differing types (for example, high-voltage rows A and B,
general purpose rows C, D, E, or F, and CV rows G and H) should not be used together. Therefore,
the rows used will depend on the SMU ranges (see next Figure).
3-8
S530-906-01 Rev. A / March 2011
