帮忙翻译一句话:“信号必须如图所示,由左上角输入”成英文

The signal must be inputed at the top left corner, as shown by the picture.

您好：
Signal must be as shown by the upper left corner of the importation of
信号必须如图所示，由左上角输入
希望对你有帮助！

Please make sure you input the signal as seen in the picture, from top left corner.

Signal must be as shown by the upper left corner of the importation of

Signal must be as shown by the upper left corner of the importation of