Keithley 2500 User Manual page 199

Models 2500 and 2502 User's Manual
• H/W-LIMITS — Use this menu item to control and set the fail mode for the Limit 1
(channel 1) and Limit 2 (channel 2) compliance tests:
– CONTROL — Use to ENABLE or DISABLE the test.
– FAIL-MODE — Use to select the fail mode for Limit 1 and Limit 2 tests. With IN
• S/W-LIMITS — Use this menu item to control, set limits for, and define output bit
patterns for Limit 3 to Limit 6 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
– HILIM — Use to set the high limit and, for the grading mode, specify the fail bit
– PASS — Use to specify the pass bit pattern for the sorting mode software limit
– FEED — Use to select the data source for the Limit 3 through Limit 6 tests. Spec-
• 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
• EOT MODE — Use this menu item to control the operation of Digital I/O line 4 to act
as an EOT (end-of-test) or BUSY signal:
– EOT — In 3-bit mode, automatically output a HI pulse on Digital I/O line 4 at end-
– /EOT — In 3-bit mode, automatically output a LO pulse on Digital I/O line 4 at
– BUSY — Set Digital I/O line 4 HI while unit is busy. With BUSY selected, the unit
– /BUSY — Set Digital I/O line 4 LO while unit is busy. With /BUSY selected, the
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selected, the test will fail when the Model 2500 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 and Limit 2 IN or OUT test failure (0 to 7, 3-bit; 0 to
15, 4-bit; 0 to 65535, 16-bit).
pattern (0 to 7; 3-bit; 0 to 15; 4-bit; 0 to 65535, 16-bit).
pattern (0 to 7; 3-bit); 0 to 15; 4-bit; 0 to 65535, 16-bit).
tests.
ify MSR1 or MSR2 (channel 1 or channel 2 measurement function), RATIO, or
DELTA.
(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 or Limit 2 (compliance) when all other software limit tests are disabled
(0 to 7, 3-bit; 0 to 15, 4-bit; 0 to 65535, 16-bit).
of-test. In 4-bit mode, EOT is not automatically controlled.
end-of-test. In 4-bit mode, this option is not available.
behaves as if it is in 3-bit mode.
unit behaves as if it is in 3-bit mode.
Limit Testing 11-17