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Electronics is allowing your competitors to create cost Electronics is allowing your competitors to create cost effective, leading edge products that are having a direct positive effect on profits- even in the current downturn market. There is no question that electronic controlled hydraulics has arrived. The only question is “are you going to allow your competitor to reduce your market share of higher profit machines.” This presentation will quickly take you through the electrohydraulic markets of yesteryear, what is happening today, and what is coming in the next three to five years. Many systems integrating hydraulics and electronics will deliver significantly more productivity than needed to offset the cost of adding electronics. In addition, the additional safety, reliability, ease of reporting machine conditions, and troubleshooting capabilities today's operators and machine owners are demanding, can only be met by electronics.

This paper tries to bring some semblance of sanity to the understanding and setting of test levels for testing EMI/RFI susceptibility of components used in heavy duty and Off-Road applications of Mobile Equipment Electronics. The most often used specification in the United States is the SAE J-1113 Surface Vehicle Standard for “ELECTROMAGNETIC COMPATABILITY MEASUREMENT PROCEEDURES AND LIMITS FOR VEHICLE COMPONENTS (EXCEPT AIRCRAFT) (60 HZ TO 18 GHZ)”. While some parts of the various SAE J-1113-* specification have suggested levels for acceptance, most sub parts leave the setting of the test levels to the equipment designer or customer. Once the level is agreed to, there must be agreement on the “Functional Status Classification” as well as the Region of performance required.

This paper provides a roadmap for engineers wanting to apply SAE J-1939 to applications requiring high input/output counts and a high number of nodes. The differences of the various SAE “J” specifications for CAN will be discussed. There are brief descriptions of some of the terms and standards involved. Coverage of the design parameters and decisions that have to be made to develop a survivable system will be outlined. The decision process on the use of “Proprietary” and “Registered J-1939 is analyzed. Methods of achieving high flexibility as well as the future directions of J-1939 and typical applications are addressed in relation to engineering flexibility, product standardization, parts rationalization, service, and customer convenience.