This paper introduce in detail the principle of the calibration of resistance box by method of direct current digital voltage meter, mathematics model and the way of uncertainty evaluation.

详细介绍了用直流数字电压表法校准电阻箱的原理、数学模型及测量不确定度评定方法。

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BBT owns mature LED production lines, equipped with integrating sphere, aging racks, withstand voltage tester, laser marker, digital power meter, insulation resistance tester, etc.

BBT拥有成熟的LED生产线，配有积分球、老化架、耐压测试仪、激光标记、数字功率计、绝缘电阻测试仪，等。

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