marginal test

marginal test

[′mär·jən·əl ′test]
(electronics)
A test of electronic equipment in which conditions are varied until failures occur or faults can be detected, allowing measurement of permissible operating margins.

marginal test

A system test that introduces values far above and far below the expected values.
References in periodicals archive ?
On the other hand, marginal test results or outright failure should set off warning bells.
Ensuring that products will work
This makes an already (in my opinion) borderline marginal test little better than a coin flip.
Enhanced vs unenhanced cardiac stress imaging
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