Keithley SourceMeter 2400 User Manual page 307

12-20 Limit Testing
• 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).
NOTE
If the contact option is installed, the H/W LIMITS selection will also set options
for the Contact Check Test (Limit 4). See
• S/W LIMITS — Use this menu item to control, set limits for, and define output bit
patterns 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).
– 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).
• PASS — Use this menu item to dictate actions upon a PASS condition:
– DIG I/O PATTERN — Use this option item to define the digital output bit
pattern (0 to 7, 3-bit; 0 to 15, 4-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).
– 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).
• EOT MODE — Use this menu item to control the operation of Digital I/O line 4 to
act as an end-of-test (EOT) or BUSY signal:
– BUSY — Set Digital I/O line 4 HI while unit is busy. With BUSY selected, the
unit behaves as if it is in 3-bit mode.
– /BUSY — Set Digital I/O line 4 LO while unit is busy. With /BUSY selected,
the unit behaves as if it is in 3-bit mode.
– EOT — In 3-bit mode, automatically output a HI pulse on Digital I/O line 4 at
end-of-test. In 4-bit mode, EOT is not automatically controlled.
– /EOT — In 3-bit mode, automatically output a LO pulse on Digital I/O line 4
at end-of-test. In 4-bit mode, EOT is not automatically controlled.
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2400 Series SourceMeter User's Manual
Appendix F for contact check details.