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现在使用的5710型长速线机盘有RR(交流),G、L、S、C、F、R等七个继电器,电路较复杂,由于RR等继电器经常发生故障,影响通信.主要问题在于继电器多,接点多,发生故障的机会就增多.为了解决这一问题,我们经过反复实验,用 S、L、R三个继电器就可以达到原来的性能要求,效果良好.经过改进后减少了转电线圈和四个继电器,使载波室至长途台的中继衰耗也有减少,经过测试改进前的中继表耗是1.2db,改进后的中继衰耗是1db,布线整齐而且维护方便.
The 5710 long-speed line currently used has seven relays, RR, AC, G, L, S, C, F and R. The circuit is complicated, and the relays of RR and other relays often fail, affecting the communication. More relays, contacts and more opportunities for failure to increase.In order to solve this problem, we through repeated experiments, with S, L, R three relays can achieve the original performance requirements, the effect is good.After the improvement to reduce the turn The electrical coil and four relays reduce the attenuation of the relays in the carrier room to the long haul station. The tested relays consume 1.2db before testing, and the improved relaying attenuation is 1db. The wiring is neat and easy to maintain.