盘点传输距离最长的VGA、DVI、HDMI、DP线，轻松选线（上）

LILINGYU
Inventory The Longest Transmission Distance Of VGA, DVI, HDMI, And DP Cables, It Is Easy To Choose A Cable(Part I)
在我们的日常工作和娱乐中，我们无法避免接触电脑、电视、投影仪等设备，这些设备都离不开各种视频输出接口。现在市场上有各种各样的连接电缆，我们总是很困惑何时何地该使用哪种电缆。 市面上最常用的视频线有：DVI、VGA、HDMI、DP，它们的极限传输距离是多少？视频线可以传输50m距离吗？ 这些问题我们在选择视频线之前需要做足功课。下面为大家盘点一下，以便小伙伴们在选择视频线时能够更好的有的放矢。 ①VGA 线 VGA接口的历史可以追溯到1987年，普遍使用蓝色插头，也是最容易辨识的接口。 VGA接口有3排针，每排5个，总共15针。我们的童年记忆---大头显示器使用VGA端口。 VGA Cable VGA接口传输模拟信号，抗干扰能力较弱，最大支持1080P分辨率。 3+4/6 VGA线的传输距离为15-30m。导体粗、屏蔽性好的无氧铜VGA线可以达到30m的传输距离，超过15m的劣质VGA线会出现拖影、模糊等画质问题。 Devices Supported ②DVI 电缆 DVI接口可支持的最大分辨率为2560 x 1600，刷新率为60Hz，这对于模拟接口来说是难能可贵的。需要明确的是，该标准不能支持太多的色彩空间。与VGA一样，只能传输视频信号，不能传输音频信号。 DVI-I接口是集成了DVI-A和DVI-D的混合接口。它与 DVI-D 和 DVI-A 兼容。它是目前兼容性最强的DVI接口。根据线缆质量的不同，DVI线的最长传输距离为7-15m，内置信号放大器的DVI线可以达到30m稳定传输。

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