A HDMI extender is a single device powered with an external power source

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Extender is used to extend the signal device. It is often used in a situations that Long straight wire can't meet the requirements of transmission, are generally designed to ensure that the signal transmission distances without damping, so much is active. It is designed to ensure that the signal transmission distances without attenuation.

Extender is divided into the sender and the receiver. The sender is responsible for the complete signal acquisition and compression. The sender is responsible for the complete signal acquisition and compression.

Common extender have HDMI extender,VGA extender, RCA extender,USB extender,KVM extender.

HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transmitting uncompressed digital data. It represents a digital alternative to consumer analog standards, such as radio frequency (RF) coaxial cable, composite video, S-Video, SCART, component video, D-Terminal, or VGA. HDMI connects digital audio/video sources-such as set-top boxes, upconvert DVD players, HD DVD players, Blu-ray Disc players, AVCHD camcorders, personal computers (PCs), video game consoles such as the PlayStation 3, Xbox 360, and AV receivers-to compatible digital audio devices, computer monitors, and digital televisions.


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A HDMI extender is a single device (or pair of devices) powered with an external power source or with the 5V DC from the HDMI source. Long cables can cause instability of HDCP and blinking on the screen, due to the weakened DDC signal that HDCP requires. HDCP DDC signals must be multiplexed with TMDS video signals to be compliant with HDCP requirements for HDMI extenders based on a single Category 5/Category 6 cable. Several companies offer amplifiers, equalizers, and repeaters that can string several standard HDMI cables together. Active HDMI cables use electronics within the cable to boost the signal and allow for HDMI cables of up to 30 meters (98 ft.). HDMI extenders that are based on dual Category 5/Category 6 cable can extend HDMI to 250 meters (820 ft.), while HDMI extenders based on optical fiber can extend HDMI to 300 meters (980 ft.).

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