Limit Testing - Keithley 6430 Quick Results Manual

34 Quick Results Guide

Limit testing

There is one hardware test (Limit 1; compliance) and 10 software tests (Limits 2, 3, 5-12;
high/low limits) available for limit testing. (Limit 4 is reserved for the contact check
option.) For basic, pass/fail, non-binning limit testing, you should use only one software
test at a time.
NOTE
Limit 1 (compliance)
This hardware (H/W) test uses the programmed compliance as the test limit. At or above
the test limit, the source is in compliance. Below the limit, the source is not in compliance.
The test can be set to fail if the source is in compliance or fail if it is out of compliance. If
Limit 1 fails, the FAIL message is displayed and the testing process for that DUT is
terminated. A pass condition allows the testing process to
test.
For example, assume the SourceMeter is set to output 1mA with 1V compliance. If the
DUT is above 1k, the source will be in compliance. If the DUT is below 1k, the source
will be out of compliance.
Use the following menu sequence to configure Limit 1:
Press CONFIG > press LIMIT > select H/W LIMITS
After selecting H/W LIMITS, these menu items will be displayed:
CONTROL — Use to ENABLE or DISABLE the test.
FAIL MODE — If you want the test to fail if the source is in compliance, select IN. If you
want the test to fail if it is not in compliance, select OUT.
Limit 2, 3, and 5 through 12 tests
These software (S/W) tests are used to determine if a DUT is within specified high and
low measurement limits. Typically, Limit 2 is set for the widest limits, while additional
limit tests are set for progressively narrower limits.
Use the following menu sequence to configure the software limit tests:
Press CONFIG > press LIMIT > select S/W LIMITS > select the desired limit test
After selecting the desired limit test (i.e., LIM2), these menu options will be displayed:
CONTROL — Use to ENABLE or DISABLE the test.
LOLIM — Use to enter the low limit value. You will then be prompted to enter the bit
pattern for binning operations. Since binning operations are being done at this time, press
ENTER or EXIT.
Limit testing using a component handler to perform binning operations is summarized
in the "More testing techniques" section of this guide. For complete details on all
aspects of limit testing, see the Model 6430 Instruction Manual, Section 11.
start the next enabled software