1:输入信号连接到118输入端,也就是RB_TEST-和RB_TEST+电压就会拉低。这是刚开始的现象。
2:现在是接上输入信号118没有输出。
现在真不知道是什么原因了,是不是118前端电路没处理好,还是什么原因,求大神指点。谢谢!
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