Standard Waveform
NOTE:
The voltage waveform of the generator B terminal can undulate. This waveform is produced when the regulator operates according to fluctuations in the generator load (current), and is normal for the generator. If the ripple height is abnormally high (approximately 2V or more during idling), the wires between the generator B terminal and the battery have broken due to fuse blowing, etc. The generator is usually operating properly.
For standard waveform observation conditions, see Fig 1 .