4/6/2024 0 Comments Utp cat5 cableThe circuit shown in Figure 2 uses the AD8148 driver board with pre-emphasis to compensate for the high-frequency attenuation through a 30-m Cat-5 UTP cable. Table 1: Common Video Resolution and Bandwidth The exact video bandwidth required is undefined, but 75 MHz should be enough to capture the experience. High-definition Blu-ray players use 1080p 16:9 HDTV. Table 1 lists the latest HDTV standards and requirements. The loss at 75 MHz is about 6 dB, so 6-dB of high-frequency gain must be applied either before transmission or after reception. This article presents two solutions that can reduce the transmission losses when using cables up to 30-m long with HDTV 1080p signals, which require a video bandwidth of about 75 MHz.įigure 1 shows the magnitude response of a 30-m cable vs. With high-definition television (HDTV) becoming increasingly popular, this type of cable could provide an inexpensive solution when long-distance connectivity-up to 30 meters-is required.īecause Cat-5 UTP cable is made for economy use, its performance degrades rapidly with longer distances. This type of cable is currently being used for keyboard-video-mouse (KVM) networking, with three out of the four twisted pairs carrying the red, green, and blue (RGB) video signals. Over the past few years, the use of the category-5 (Cat-5) unshielded twisted-pair (UTP) cable has grown due to its respectable performance and low cost. Equalization and Pre-Emphasis Enable Use of 30-Meter Cat-5 UTP Cable
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