該測試卡用來檢測旅游信息板上的文字和地圖的精細(xì)度和波形畸變。
測試卡從800字母每屏的大文字到80000字母每屏的小文字，包含了各種大小的文字，可以觀察到文字的可讀性、精細(xì)度以及是否存在拖影或條紋。
此外，可以通過觀察五顏六色的字母來確定亮度信號(hào)的相位偏移情況。
The image is useful to check readability of letters, fineness and waveform distortion.?
There are various sizes of letters, from 800letters/1screenful to 80,000letters/1screenful. The letters in uppermost part of the board are suitable for checking if there is smear or streaking. Also if you focus on colorful letters, you can find conditions of phase shifting of brightness signal.
有效尺寸：153mm×272mm
外形尺寸：200mm×310mm
