Figure 11-1 Limits Tests; Types Of Limits - Keithley 6430 Instruction Manual

11-2 Limit Testing

Types of limits

As shown in Figure 11-1, there are 11 limit tests that can be performed on a DUT.
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A test is only performed if it is enabled. Thus, you can perform one, two, or all 11 tests. The
tests are always performed in the order shown in the drawing.
Figure 11-1
Limits tests
Fail
Fail
Pass/fail information
Pass/fail information for limit tests can be obtained as follows:
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Limit 1: compliance test
Limit 2: course limits
Limits 3, 5-12: fine limits
Pass or Fail on Compliance
LO
Pass
Limit
LO
Pass
Limit
A "PASS" or "FAIL" indication on the front panel display.
By programming the unit to output specific pass/fail bit patterns on the Digital I/O port,
which can be used to control other equipment such as a device handler for binning oper-
ations. See Binning systems later in this section and Section 12, Digital I/O port, for
more information.
With the :CALCulate2:LIMit<n>:FAIL? query via remote, where <n> is the limit test
number (Section 17, CALCulate 2).
By reading various status bits (Section 14, Status structure, and Section 17, FORMat
subsystem.)
By noting a "P" or "F" preceding buffer location numbers (Section 8, Buffer location
number).
Limit 1 Test
(Compliance)
HI
Limit 2 Test
Fail
(Coarse Limits)
Limit
HI
Limit 3, 5-12 Tests
Fail
(Fine Limits)
Limit