Operation Overview - Keithley SourceMeter 2400 User Manual

®
2400 Series SourceMeter User's Manual

Operation overview

Grading mode
Grading mode limits operation is detailed by the flowchart in
performed if it is enabled. If disabled, operation proceeds to the next test. The following
assumes the first three limit tests are enabled and the digital output of the SourceMeter is
connected to a component handler for DUT binning. (See
If a handler is not used, ignore digital input/output (handler interface) actions.
With the limit tests properly configured, turn the SourceMeter output on and press the
LIMIT key. In this example, the testing process will start when the component handler
sends the start-of-test (SOT) strobe pulse to the SourceMeter. Note that if a handler is not
used, testing will start when LIMIT is pressed. Pressing LIMIT a second time terminates
the testing process.
As shown in the flowchart, limit tests are performed after a measurement conversion.
Binning control
The binning control selection determines when the testing process stops and the appropri-
ate binning operation occurs. The results are communicated through the Digital I/O port
based on limit test data. (See
ning control for the grading mode: immediate and end.
NOTE
Binning affects contact check tests. See
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Figure
"Binning systems," page
"Binning systems," page 12-11.) There are two types of bin-
Appendix F for details.
Limit Testing 12-5
12-2. A test is only
12-11.)