本规程规定了与高清晰度和标准清晰度环境兼容的颜色条图案。多格式色条信号源于高宽比为16:9的HDTV信号，并且可以下变频为高宽比为4:3或16:9的SDTV色条信号。色条信号以非常缓慢的上升和下降时间值生成，因此仅用于促进视频电平控制和监控HDTV和SDTV设备的颜色调整。它可以应用于HDTV视频制作，尤其是在多格式环境中，在525或625环境中，HDTV视频源经常被转换并用作SDTV视频内容，其帧频与原始HDTV信号相同。

This practice specifies a color bar pattern compatible with both high- and standard-definition environments. The multi-format color bar signal originates as an HDTV signal with an aspect ratio of 16:9 and may be down-converted to an SDTV color bar signal with an aspect ratio of either 4:3 or 16:9.The color bar signal is generated with unconventionally slow rise and fall time values, and is therefore only intended to facilitate video level control and monitor color adjustments of HDTV and SDTV equipment. It can be applied to HDTV video productions, especially in a multi-format environment where HDTV video sources are frequently converted and used as SDTV video content either in 525 or 625 environments with the same frame frequencies as in the original HDTV signal.