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例1:一台KX-7502-10MW光发射机,输出信号时有时无,前面板上的指示发光二极管一会儿绿,一会儿黄。开机检查,用场强仪测光发射机前面板上的测试口,不管是低端还是高端电平均在30dB左右。取下
Example 1: A KX-7502-10MW optical transmitter sometimes outputs no signal. The LEDs on the front panel are green for a while and yellow for a while. Boot check, with the field meter measuring light transmitter front panel test port, whether it is low-end or high-end level in about 30dB. Remove