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Proceedings ArticleDOI

The impact of test definition standards on TPS quality

K.R. Hilberth
- pp 492-495
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TLDR
Definitive standards for test definition will support not only demonstrable TPS quality but also TPS documentation that is both descriptive and indicative of the levels of quality that are being achieved.
Abstract
One of the chronic problems associated with Test Program Set (TPS) development has been the lack of unambiguous standards for test definition. Elements of the definition include, but are not necessarily limited to, the questions of what constitutes a test, what aspect or failure mode of the UUT is being addressed by the test, why the test is being performed at that particular point in the overall test flow, and how the test relates to other tests within the main performance verification path or any of the diagnostic branches. Moreover, test definition standards are very closely related to the way in which unambiguous fault defection and fault isolation metrics are implemented, as well as the way in which overall (TPS) test strategy is documented. Definitive standards for test definition will support not only demonstrable TPS quality but also TPS documentation that is both descriptive and indicative of the levels of quality that are being achieved.

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Citations
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Proceedings ArticleDOI

The hidden crisis in test effectiveness

J.K. Scully
TL;DR: The sophistication and complexity of avionic, and other, prime systems has been growing at a pace that has not been matched by commensurate improvements in test technology, resulting in NFF (no fault found) and other test effectiveness deficiencies that will soon reach crisis levels.
Proceedings ArticleDOI

Uncertainty of test coverage: A challenge for state of the art integrated diagnostics

K.R. Hilberth
TL;DR: Fault coverage is the most essential component of integrated diagnostics because by clearly defining the fault universe, even in the presence of literally millions of faults, one can establish a baseline for test coverage.
Proceedings ArticleDOI

TPS rehost efficiency improvement considerations

TL;DR: In this article, the authors describe the key to successful TPS rehost is the capture of this knowledge in the most cost effective manner and without loss of TPS effectiveness, and any improvements to the quality of the rehosted TPS need to be made with caution and without disassembling the diagnostic engine of the TPS.
Proceedings ArticleDOI

A systems engineering view of TPS rehosting

J.K. Scully
TL;DR: The objective of TPS rehosting is usually preservation of proven legacy test design, but it should also seek to preserve legacy SI flow to avoid the subtle, and often difficult, problems caused by re hosting to the new ATS.
References
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Proceedings ArticleDOI

Diagnostic Inference Model error sources

TL;DR: Application of tools such as WSTA, DARTS, STAT and STAMP is now widely accepted as a viable approach to determining the testability of systems and developing rigorous and efficient test strategies.
Journal ArticleDOI

Built-in test maturation concepts using test program set and relational database technologies

TL;DR: This paper discusses how test program set (TPS) and relational database (RDB) technologies can be used for this purpose for continually improving avionic BIT and TPS operation.
Journal ArticleDOI

A method for consistent fault coverage reporting

TL;DR: Procedure 5012 of Mil-Std-883 describes requirements for the logic model, the assumed fault model and universe, fault classing, fault simulation and reporting of test results for digital microcircuits, and provides a consistent means of measuring fault coverage regardless of the specific logic and fault simulator used.
Proceedings ArticleDOI

Internal/external test harmonization, verticality and performance metrics-a systems approach

J.K. Scully
TL;DR: On-line BIT (built in test) and off-line TPS (test program sets) both suffer from a history of chronic performance deficiencies and can be remedied by more closely coordinating concurrent BIT/TPS development and by applying the same quantitative test performance metrics to both areas under a vertical test design approach.
Proceedings ArticleDOI

Recasting the avionic support paradigm

J.K. Scully
TL;DR: In this paper, the authors proposed a new support paradigm that more closely integrates the mission related and support related aspects of both acquisition and development, which could resolve many chronic deficiencies while being more compatible with evolving prime system technology.