CAN bus analyzer and EMC test system

The utility model belongs to the EMC (Electro Magnetic Compatibility) detection technology, and particularly relates to a CAN (Controller Area Network) bus analyzer and an EMC test system, and the CAN bus analyzer comprises a high-frequency unit and a low-frequency unit; the high-frequency unit is connected with the low-frequency unit through an optical fiber; according to the CAN bus analyzer, a high-frequency unit and a low-frequency unit in a traditional CAN bus analyzer are divided into two devices, and the two devices are connected through an optical fiber; the high-frequency unit and the low-frequency unit are isolated through the optical fiber, circuit noise transmitted through a conductor can be almost completely eradicated, the length of the optical fiber can be pulled by hundreds of meters, and the influence of electromagnetic radiation on testing of a tested piece can be greatly reduced. 本实用新型属于EMC检测技术，具体涉及一种CAN总线分析仪以及EMC测试系统，其中所述CAN总线分析仪包括：高频单元和低频单元；以及所述高频单元与所述低频单元通过光纤进行连接；本CAN总线分析仪将传统的CAN总线分析仪中的高