It can be used to measure the luminous intensity, forward voltage, reverse current of each luminous dot in all kinds of LED luminous dot matrix.

能测试各种LED发光矩阵每个发光元的发光强度，正向压降和反向电流。

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VCC power | VF LED voltage regulator, driving voltage, IF forward current.

VCC为电源|稳压器电压，VF为LED驱动电压，IF为顺向电流。

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VCC power | VF LED voltage regulator, driving voltage, IF forward current.

VCC为电源|稳压器电压，VF为LED驱动电压，IF为顺向电流。

youdao