http://www.auto-diagnostics.info/j1850 j1850 The SAE J1850 bus bus is used for diagnostics and data sharing applications in vehicles. The J1850 bus takes two forms: 41.6Kbps Pulse Width Modulated (PWM) two wire differential approach (Ford vehicles) 1…

SAE J1850 VPW 接口芯片电路 SAE J1850 PWM 接口芯片电路 SAE J2411 SWC 接口芯片电路 ISO 11898 CAN 接口芯片电路 CANH 和CANL 上的电容 CANH 和CANL 输出到GND 的一对匹配电容CH 和CL 经常被用于提高抗电磁干扰的性能 相应噪声源的阻抗RF 和CANH 和CANL 对地的电容组成了一个RC 低通滤波器 在抗干扰的性能的问题上电容的值应该尽可能大才能获得低的角频率, 另一方面输出级的整个电容负载和阻抗为数据信号建立了一个低…

http://www.obdexperts.co.uk/stack.html OBD II Software OBD Experts can provide you with ready to use off-the-shelf OBD II software implementing the following automotive protocols: ISO 9141-2 KWP 2000-4 SAE J1850 PWM (Ford SCP) SAE J1850 VPW (GM Class…

---恢复内容开始--- OBDII Interface Project When I can ever find enough time away from schoolwork, I try to work on an OBDII compliant portable ScanTool. However, with my current course load and lab projects progress on this project has been very slow. I fi…

http://faq.ford77.ru/pdf/eec/DataSheet.pdf FEATURES:Operating Voltage 5.0 VOperating Current 5 Ma. TypClock: 20 MHzInputs: (0-5V levels)Serial Input (19200 Baud)PWM receiveVPW receiveISO 9141-2Outputs (0-5V levels)Serial output (19200 Baud)PWM transm…

On-Board Diagnostics J1962 Diagnostic Connector Equivalent to ISO/DIS 15031-3: December 14, 2001J2012 Diagnostic Trouble Code Definitions J1939 Recommended Practice for a Serial Control and Communications Vehicle NetworkJ1979 E/E Diagnostic Test Mode…

http://www.obdsol.com/stn1110/ Safe, secure bootloader. Reflash the firmware in the field, even over a poor quality link and avoid expensive product recalls. Fully compatible with ELM327 command set, ensuring out-of-the-box compatibility with the doz…

http://www.obdsol.com/stn1170/ STN1170 supports the following protocols: all legislated OBD II protocols: ISO 15765-4 (CAN) ISO 14230-4 (Keyword Protocol 2000) ISO 9141-2 (Asian, European, Chrysler vehicles) SAE J1850 VPW (GM vehicles) SAE J1850 PWM…

Connects to the OBDII J1962 DLC and supports the following protocols. 1 CAN2 Single Wire2 J1850PWM+ , J1850VPW3 CAN2+6 CAN+ (CAN-C only), SCI A Engine, 5v-20v out7 ISO-9141 K-line, SCI A Engine, SCI A Trans, SCI B Engine9 SCI B Trans, 5v-20v out or s…

http://en.wikipedia.org/wiki/On-board_diagnostics#Standard_interfaces OBD-II diagnostic connector The OBD-II specification provides for a standardized hardware interface—the female 16-pin (2x8) J1962 connector. Unlike the OBD-I connector, which was s…