43.1.1. Definition of Reliability
Reliability is generally defined as the probability that a component or assembly will operate without failure for a prescribed period under specified conditions. In order to ensure a meaningful result the conditions of operation, both physical and electrical, must be specified in detail, as must the standard of performance required.
Typical conditions which need to be considered are:
1. Variations in power supply voltage and size of voltage transients.
2. With a.c. supplies, the variations in frequency and harmonic content.
3. The level of unwanted rf energy radiated by the equipment must not cause interference to radio communications.
4. The equipment must be able ...