Self-Test and Fault Isolation

What Does Self-Test and Fault Isolation Mean?

Self-test and fault isolation is a process of self-checking a system against threats and vulnerabilities. Most modern-day systems have a processor-check ability that allows a computer to test itself and the rest of the system for any fault. An emergency message is generated to the system log if any faulty hardware or software is found.


Techopedia Explains Self-Test and Fault Isolation

Self-test and fault isolation saves diagnostic time in large systems where the detection of fault takes real effort. This saves the system from sudden breakdowns, and detects issues before a real problem is created. This feature is typically used in electricity transmission systems where wires and cables are used over long distances of transmission lines. Smart controllers are used on poles and grid lines where they can detect a fault many kilometers away and shut down or isolate the machinery to prevent damage.


Related Terms

Margaret Rouse
Technology Expert

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.