Handle reset alarm signal, if there is still in failure, technician on duty must report to project engineer or leader.
手动复位报警信号，如果信号复位还是报故障则向项目工程师或是领导报告。
The charger shall give an alarm signal upon failure initiated by either an under-voltage relay or a zero charging current relay.
充电器应发出警报信号后没有任何一方发起一个欠压继电器或零充电电流继电器。
The major alarm maintenance signal of SDH transmission system are introduced and its implication and failure reason are described.
介绍了SDH传输系统主要告警维护信号，描述了告警维护信号的含义和故障产生原因。
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