| 摘要 |
The invention relates to a device supplying an electrical signal for which a characteristic, for example, the voltage is adjustable. The device has a connector at one end of a cable to supply this signal to another electrical device. This connector comprises a transmission means of a light signal for which a visible characteristic depends upon the electrical signal produced. One improvement consists in the light signal coming from a source of white light that is colour modulated by filters. These filters are mechanically integrated into a mobile part belonging to the adjustment means of the signal supplied. The invention also relates to a system comprising the device supplying the signal and the device to be connected, the latter device features a mark identifying the light signal compatible with the electrical signal to receive.
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