SRC Forum - Message Replies
Forum: Reliability & Maintainability Questions and Answers
Topic: Reliability & Maintainability Questions and Answers
Topic Posted by: Reliability & Maintainability Forum
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998
Posted by: Kang Zhang
Date posted: Wed Feb 9 16:11:35 US/Eastern 2000
Subject: False Alarm Rate Model in BIT circuitry analysis
Does someone have some experience about False Alarm Rate Models in BIT circuitry analysis? Any information is welcome. Thanks.
Subject: False Alarm Rates
Reply Posted by: Bruce Dudley
Organization: Reliability Analysis Center
Date Posted: Thu Feb 17 15:37:46 US/Eastern 2000
False alarms usually occur in 1 to 45% of the detected faults if the definition is expanded to include can-not duplicate failures. Obviously, one would like to minimize this effect and this generally is accomplished by designing repeated or recycled tests for each fault detection or increasing the tolerance factors for performance parameters. Analyzing to determine the level of false alarms requires the use of detailed and costly programs such as the STAMP program. In 1981, Hughes Aircraft Company did a study on this condition. The report is called "Anaylsis of Built-In-Test False Alarm Conditions, RADC-TR-81-220 that has some interesting comments on built-in-test and its limitations.