This SAE Standard defines a component-level test procedure to evaluate automotive electrical and electronic components for Conducted Emissions of transients@ and for other electromagnetic disturbances@ along battery feed (B+) or switched ignition inputs of a Device Under Test (DUT). Test apparatus specifications outlined in this procedure were developed for components installed in the 12-V passenger cars@ light trucks@ 12 V heavy-duty trucks@ and vehicles with 24 V systems.Measurement PhilosophyVarious inductive loads installed in a vehicle could be a source of electromagnetic disturbances during switching and/or operating conditions. These disturbances@ propagating in the vehicle??s electrical system through the interconnecting wiring harness@ could adversely affect the proper performance of the on-board electronics. In order to achieve Electromagnetic Compatibility (EMC) of the system@ the characteristics of these disturbances should be analyzed. This procedure provides a uniform means for evaluating transients and other disturbances conducted from the DUT along its power supply lines. These tests are performed in a laboratory (bench test). A DUT which is considered to be a potential source of disturbances should be tested according to the procedure described in this document.NOTE 1??While this procedure is aimed mainly at measuring transients of simple inductive devices (motors@ solenoids@ relays@ etc.)@ it also applies to subsystems comprised of inductive devices combined with electronics and/or switches. When such a subsystem is fed with both direct feed power supply line and switched ignition power supply line@ the test plan should specify where transients are to be measured@ and whether these two power supply lines should be tied together for the test.NOTE 2??This document is a part of the SAE J1113-XX series@ EMC Measurement Procedures and Limits for Vehicle Components.
SAE J1113-42-2006 history
1970SAE J1113-42-2010 Electromagnetic Susceptibility Test Procedures for Vehicle Components (Except Aircraft)
2006SAE J1113-42-2006 Electromagnetic CompatibilityComponent Test Procedure Part 42Conducted Transient Emissions
2000SAE J1113-42-2000 Electromagnetic CompatibilityComponent Test Procedure Part 42Conducted Transient Emissions