Taking the SIEMENS SICLOCK GPSDEC system as the example, the time synchronization was realized with ASCII message format and DCF77 signal, pulse signal transmitted by RS-232 interface or TTY current loop interface.

• 以GPSDEC授时型接收机为例,其校时可通过RS-232接口端ASCII码信息和DCF77信号、及输出端自定义脉冲信号实现。