瞄准系统中的转换器、瞄准控制器及传输电缆部分是最容易受干扰的环节，也是瞄准系统可靠性的控制点。
The conversion part, controller and connection cable are easy to be jammed and are the reliability control point in the aiming system.
第二部分是光纤传输和光电转换器，从传感头输出的频率调制信号驱动装在高压端的发光二极管，进而转换成光脉冲信号；
The first one is a sensor head converting the current flowing in the power line into the optical pulse FM signal. The second one is optical fiber transmission and optolectric conversion.
由于波长转换器的成本较高，且使用过多的波长转换器会增加传输时延，在进行波长路由分配时应尽可能减少波长转换的次数。
It is expensive to use wavelength convertor, which causes a long delay. So it is better to minimize the number of wavelengths conversion.
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