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…

---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://avrobdii.googlecode.com/svn/trunk/code/J1850.c /* Copyright (C) Trampas Stern name of author This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Sof…

(1)CAN:(差分信号)有信号CANH=3.5V,CANL=1.5V, 没有信号CANH=2.5V,CANL=2.5V 速率:CAN系统又分为高速和低速,高速CAN系统采用硬线是动力型,速度:500kbps,控制ECU.ABS等:低速CAN是舒适型,速度:125Kbps,主要控制仪表.防盗等. (2)J1850: H:4.25V~20V L:低于3.5V 速率:20kbps~125kbps (定:美)用于福特(Ford).通用汽车(General Moter:GM).克赖斯勒(Chrysler…

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…

http://www.digidescorp.com/wp-content/uploads/2012/02/J1850-Datasheet-pdf.pdf…

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…

SAE J1962—Diagnostic Connector SAE J1850—Class B Data Communications Network Interface SAE J1939—Truck and Bus Control and Communications Network (Multiple Parts Apply) SAE J2610—DaimlerChrysler Information Report for Serial Data Communication Interf…

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…

产品简介: C68汽车故障诊断仪是凯尔卡公司新推出的一款集经济.简约.稳定.耐用于一体的汽车诊断设备, 该产品采用了最新的智能移植技术,集成度高:C68车型覆盖广,测试功能强大.数据准确等优点, 是目前市场上性价比极高的一款汽车诊断设备: 功能特点: A   诊断功能:车型覆盖面广,能测试几乎所有国产车和亚洲.欧洲.美洲各类型车系: B   通用性能:主机已经内置CAN测试芯片,适用于不同诊断协议的16PIN标准接头车型的测试,使用操作更便捷,更高效,无    需另外购置CAN接头,为您节约成本…