J1939/11_201209 Physical Layer, 250 Kbps, Twisted Shielded Pair

This document defines a physical layer having a robust immunity to EMI and physical properties suitable for harsh environments.

These SAE Recommended Practices are intended for light- and heavy-duty vehicles on- or off-road as well as appropriate stationary applications which use vehicle derived components (e.g., generator sets). Vehicles of interest include but are not limited to: on- and off-highway trucks and their trailers; construction equipment; and agricultural equipment and implements.