Limit Tests

The purpose of a LTT testplan is to test DUT outputs (signals) against certain limits. Hence, the limit test is the most important TestStand concept for LTT.

TestStand offers 3 standard limit test types:

• numeric limit test

• string limit test

• pass/fail test

The LTT software adds a fourth type of limit test - the LTT limit test. The LTT limit test is a combination of the numeric and string limit tests and allows limits to be configured by XML file. That way it is easily possible to change limits without changing the the testplan itself. Additionally the LTT limit test step provides a limit selection panel in TestStand, where you can easily select the signal and limit you want to test.

LTT Limit Test Dialog