Design for Tactical Avionics Maintainability.
Abstract
The inherent logical make-up of digital systems makes possible the opportunity for a large improvement in the maintainability cost of avionics. Limited success in the use of Built-in-Self-Test/Built-in-Test (BIST/BIT) for fault detection and location has discouraged users. The promised high percentage detection capability has resulted in an increased in-service delivered performance, but not as high as predicted, and false alarms have increased. Past and current digital systems designs have had BIST/BIT as an added-on feature when it should have been incorporated into the original design. Testability must become a basic system design objective. However, only recently did adequate tools and advanced technology become available upon which to base imaginative new approaches to BIST/BIT. These new ideas are expected to produce accurate and efficient test programs and techniques. With the rapid increase in the use of embedded computers in the avionics system and equipment, maintenance of the avionics software has not been designed with low life-cycle maintenance as an objective. Developing concepts, methods and tools aimed at a well structured, testable process will overcome past deficiencies. The objective of this symposium was to bring forward for Avionics Panel review and discussion the developing methods and techniques on both the hardware and software sides of the maintainability issue.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1984
- Accession Number
- ADA149199
Entities
Organizations
- AGARD