幅頻測試圖卡簡介

TE87是專門做視頻幅度的測量設計的。在灰色背景區(qū)域上有在九個位置不同白色，灰色和黑色塊。

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.