Tagged standards
3 pieces
- · 5 min read
IEC 62304: Verification Scales With Risk Class
Class A is no possible injury, Class B non-serious injury, Class C death or serious injury. Verification obligations rise with the class: more rigorous unit, integration and system testing, documented procedures, and traceability from software requirements through tests to risk controls under ISO 14971.
- · 5 min read
ISO 26262 Mandates Fault Injection at ASIL D
Branch coverage is highly recommended at ASIL B, C and D; MC/DC and fault injection become highly recommended at ASIL D. The hardware side permits only about 1 percent residual single point faults at ASIL D, assessed through fault injection campaigns. Negative control discipline, written as a requirement.
- · 5 min read
What DO-178C and MC/DC Actually Require, With a Worked Example
Branch coverage on D = A and B is satisfied by two tests, and a bug that ignores B passes both. MC/DC requires each condition to independently flip the outcome, needing three tests, and it catches that bug. It is the cleanest illustration of covered against proven.