What OEM Alternator Specifications Must Include for J1939 Ripple Coupling
Short answer: An OEM alternator specification for J1939 ripple coupling should define a frequency-resolved ripple envelope, the battery impedance and harness length used for validation, a coupled ripple limit at the ECM supply pin, the J1939-11 harness assumptions, and regulator transient behavior during load steps and bus-commanded voltage changes. When I audit an OEM alternator […]