11-16 Limit Testing
In SORTING mode, a reading will fail if it fails the Compliance Test, or is not
within any of the Digital I/O Bands. If the tests pass and only Limit 1 is enabled,
the associated pass pattern will be output. Otherwise, the first limit test band that
passes will output its lower limit pattern (upper limit patterns will be ignored). If
Limit 1 fails, its failure patterns will be output. If no Limit 2, 3, or 5-12 passes,
their failure pattern will be output. When SORTING is selected, the Digital I/O bit
pattern can also be set (0 to 7, 3-bit; 0 to 15, 4-bit).
– AUTO CLEAR — Use this menu item to ENABLE or DISABLE auto-clear for
the digital output. After enabling auto-clear, you will be prompted to set the pass/
fail pattern pulse width (delay; 0 to 60.00000sec). You will then be prompted to set
the digital output clear pattern (0 to 7, 3-bit; 0 to 15, 4-bit; 0 to 65535, 16-bit).
NOTE 16-bit digital output patterns are available only with the 2499-DIGIO option.
• H/W LIMITS — Use this menu item to control and set the fail mode for the Limit 1
(Compliance) test:
- CONTROL — Use to ENABLE or DISABLE the test.
- FAIL MODE — Use to select the fail mode for Limit 1 test. With IN selected, the
test will fail when the SourceMeter is in compliance. With OUT selected, the test
will fail when not in compliance. Also use to specify the digital output bit pattern
for Limit #1 IN or OUT test failure (0 to 7, 3-bit; 0 to 15, 4-bit; 0 to 65535, 16-bit).
• S/W LIMITS — Use this menu item to control, set limits for, and define output bit pat-
terns for LIM2, LIM3, and LIM5 through LIM12 tests:
- CONTROL — Use to ENABLE or DISABLE the test.
- LOLIM — Use to set the low limit and, for the grading mode, specify the “fail” bit
pattern (0-7; 3-bit; 0 to 15; 4-bit; 0 to 65535, 16-bit).
- HILIM — Use to set the high limit and, for the grading mode, specify the “fail” bit
pattern (0 to 7; 3-bit); 0 to 15; 4-bit; 0 to 65535, 16-bit).
- PASS — Use to specify the “pass” bit pattern for the sorting mode software limit
tests.
• PASS — Use this menu item to dictate actions upon a PASS condition:
- DIGIO PATTERN — Use this option item to define the digital output bit pattern
(0 to 7, 3-bit; 0 to 15, 4-bit; 0 to 65535, 16-bit). For the grading mode, it is the pass
pattern for the “all tests pass” condition. For the sorting mode, it is the pass pattern
for Limit 1 (compliance) when all other software limit tests are disabled (0 to 7, 3-
bit; 0 to 15, 4-bit; 0 to 65535, 16-bit).
- SRC MEM LOC — Use this option with a Source Memory Sweep to select the
next memory location point in the sweep when the PASS condition occurs. If
NEXT is selected, the next point in the sweep list will be selected. You can also
branch to a different point in the sweep by specifying the memory LOCATION# (1
to 100).
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