This part of ISO 13849 specifies the procedures and conditions to be followed for the validation by analysis and testing of — the specified safety functions, — the category achieved, and — the performance level achieved by the safety-related parts of a control system (SRP/CS) designed in accordance with ISO 13849-1. NOTE Additional requirements for programmable electronic systems, including embedded software, are given in ISO 13849-1:2006, 4.6, and IEC 61508 .