SAE1939-15ICSGB/T XXXX.3-XXXX Commercial Vehicle Control System Local Area Network (CAN) Communication Protocol Part 3: Physical Layer - Unshielded Twisted Pair (250K bits/second) (SAE1939-15:2003 MOD) (Draft for Comments) Issued on 20xx-xx-xx Implementation on 20xx-xx-xx National Standardization Administration GB/T XXXX.3-XXXX Foreword GB/T×××× \"Commercial Vehicle Control System Local Area Network (CAN Bus) Communication Protocol\" consists of 10 parts: - Part 1: Physical layer - Shielded twisted pair (250K bits/second) - Part 2: Physical layer - Off-board diagnostic connector - Part 3: Physical layer - Unshielded twisted pair (250K bits/second) - Part 4: Data link layer - Part 5: Application layer - Vehicle - Part 6: Application layer - Diagnostics - Part 7: Network management - Part 8 Part: Parameter Group Allocation - Part 9: Address and Identifier Allocation - Part 10: Suspicious Parameter Number (SPN) - Part 11: Network Layer This part is Part 3 of GB/T××××, corresponding to SAE 1939-15: 2003 \"Physical Layer, Unshielded Twisted Pair\". The consistency between this part and SAE1939-15 is modified adoption (the technical content is completely equivalent). The main differences are as follows: - Added \"Foreword\" and \"Scope\" as specified in 1.1. - Editorial changes were made. This part was proposed by the National Technical Committee for Automobile Standardization. This part is under the jurisdiction of the National Technical Committee for Automobile Standardization. This part was drafted by. The main drafter of this part: GB/T XXXX.3-XXXX Automobile Control System Local Area Network (CAN bus) Communication Protocol Part 3: Physical layer - Unshielded twisted pair (250 kilobits/second) 1 Scope This part specifies the electrical performance parameters of the physical layer of the CAN bus - unshielded twisted pair (250K bits/second). This part is applicable to M2, M3, N and L vehicles, and other vehicles can refer to it. 2 Normative references The clauses in the following documents are adopted by this……
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