Defines test methods for immunity to ripple at the d.c. input power port of electrical or electronic equipment. Applies to low-voltage d.c. power ports of equipment supplied by external rectifier systems, or batteries which are being charged. This standard defines - test voltage waveform, - range of test levels, - test generator, - test set-up, - test procedure. THIS CONSOLIDATED VERSION CONSISTS OF THE FIRST EDITION (1999) AND ITS AMENDMENT 1 (2001). THEREFORE, NO NEED TO ORDER AMENDMENT IN ADDITION TO THIS PUBLICATION.