幅频测试图卡

幅频测试图卡简介

TE87是专门做视频幅度的测量设计的。在灰色背景区域上有在九个位置不同白色，灰色和黑色块。

The TE87 is designed to do video amplitude measurements. On a gray background there are white, gray and black patches in nine positions in the field.