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Beijing and Shanghai Chinese Translation Service in The field of Fault diagnosis to the portable test unit


6.5.3. 便携式测试仪（PTU）和牵引系统的故障诊断功能
Fault diagnosis to the portable test unit(PTU)and traction system
6.5.3.1. DCU应具有自诊断和自监视功能。
The DCU shall have the capability of self-diagnosis and self-monitoring.
6.5.3.2. DCU应具有故障诊断和存储功能，其故障诊断应包括DCU、VVVF逆变器和其他与DCU有关的设备。
Apart from memory function, the DCU shall have the capability of conducting fault diagnosis to DCU, VVVF inverter and other related equipments

华译网北京翻译公司翻译过大量有关便携式测试仪的文件资料。
Beijing Mandarin Chinese Translation Service Company has translated many technical documents in the field of Fault diagnosis to the portable test unit.

6.5.3.3. DCU故障应代码化，故障数据应包括故障点数据和历史数据，数据中应对牵引/制动用的各种信号进行记录。
The faults diagnosed by DCU shall be in codes. Both the data in fault point and historical data shall be included, in which all kinds of signals related with traction and braking shall be recorded.
6.5.3.4. 在DCU与CCU支持的列车故障诊断系统中，应对各故障进行故障评估，将评估结果显示在司机显示屏上，并向司机作出相应指示。
The fault diagnosis system supported by DCU and CCU shall be able to make evaluation to all faults, then show results and corresponding indications on display screen for the driver.
6.5.3.5. 在牵引控制单元中，应定义牵引系统最小可诊断单元，在DCU与CCU支持的列车诊断系统中，应能对每个最小可诊断单元进行故障诊断。
The minimum diagnosable unit shall be defined in traction control unit, the fault diagnosis system supported by DCU and CCU shall be able to conducting fault diagnosis to all minimum diagnosable units.

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