One position detented rotary control precision input attenuator per channel.

一个位置控制精度拘禁旋转输入衰减器每通道。

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This fibre attenuator is useful to optical fibre transmission system, because of performance stability and high precision.

该光纤衰减器性能稳定，精度高，适于光纤传输系统使用。

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