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分析了25Hz站内相敏轨道电路叠加ZPW-2000A型移频电码化设备N+1 FS电路存在的问题,提出了电路的修改方案,并在现场的实际设备中通过试验证明了其可行性,从而得到了广泛应用。
The problems existing in the N + 1 FS circuit of ZPW-2000A shift-frequency code equipment superimposed on the phase-sensitive track circuit in 25 Hz station are analyzed, and the modification scheme of the circuit is proposed. The feasibility of the circuit is proved through experiments in the field Has been widely used.