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400kHz列调通信系统原为无线感应通信制式,由西安科研所研制的直接耦合装置用于系统的机车和车站电台后,使系统的性能和通信质量大为提高。
The 400 kHz serial communication system was originally a wireless sensor communication system. The direct coupling device developed by Xi’an Research Institute was used in the locomotive and station of the system to improve the performance and communication quality of the system greatly.