利用数字电位器ds1867实现了对激光器电源内部电阻的控制，从而改变激光器发射功率等级的目的。

This laser power can control adjustable resistance internal to change the level of transmitting power using the digital resistance DS1867.

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为了保持发射功率损失(我2 R)和电压下降到可接受的水平，电压等级，必须长途输电高。

To keep transmission power losses (I 2 r) and voltage drops to acceptable levels, voltage levels had to be high for long-distance power transmission.

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