Appendix B: Kelvin (4W) S530 system diagnostics
S530
Diagnostic Manual
Figure 50: Model 2410, row C or H, pins 1 or 3 connected to GNDU
Kelvin continuity test
The purpose of the continuity test is to determine if the relays under test have properly closed and to
measure the resistance of the path. The test consists of both the pin test and SMU test of the matrix.
The pin test determines if relays are connected to test the pins, and the SMU test will determine if the
relays are connected to the SMUs.
Continuity pin test
The pin test uses SMU1 and SMU2 using the Series 2600A instruments. Each group of rows will be
tested with pairs of rows and each pair consists of row n and row n+1 (n = 1, 3, 5, 7*). The two SMUs
are connected by two rows using the same pin. Execute the test by forcing 1mA from the first SMU,
forcing 0V from the second, and then measuring voltage and current with the first SMU. If the
resistance is higher than 1Ohm (determined by measuring the voltage and current), Fail will display in
the ACS GUI test log and in the diagnostic report in the following default directory:
C:\ACS\Projects\Diagnostic\Reports
NOTE
The connections of the rows and SMUs will reverse once in order to test the path in the opposite
direction. For example, first rows A and B and then rows B and A.
Pin test
When a Model 2410 SMU is in your system (high-voltage systems only), only row pair A and B will be
tested by the 2410. The remaining rows will be tested using the Series 2600A instruments. Systems
without a Model 2410 will test rows A through H using the Series 2600A instruments.
3-12
S530-906-01 Rev. A / March 2011
