with comparison between actual response and known fault-free response

Error detection; Error correction; Monitoring > Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing > Functional testing > Tester hardware, i.e. output processing circuits > with comparison between actual response and known fault-free response

Error detection; Error correction; Monitoring (error detection, correction or monitoring in information storage based on relative movement between record carrier and transducer G11B20/18; monitoring, i.e. supervising the progress of recording or reproducing G11B27/36; in static stores G11C29/00) > Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing > Functional testing > Tester hardware, i.e. output processing circuits > with comparison between actual response and known fault-free response