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Copper Cable Extenders

There are many challenges to overcome when designing systems that require long DVI / HDMI cable runs.  These high-speed serial data formats operate at 10x (or higher) bit rates than corresponding analog signals.  The bit rates of these digital signals increase in direct proportion to their resolution and color depth.  As cable length increases, moving these high-speed bits over copper cables becomes increasingly difficult due to a variety of factors including: cable capacitance, inter-pair and intra-pair skew, crosstalk, differential impedance errors, group delay errors, etc.

In order to achieve successful digital cable runs, it is essential to use high-performance cables where these factors are minimized to the greatest extent possible.  This especially true with longer cables >50 ft. (15 meters) because these degenerative effects become worse as cable length increases.  Improvements in cable range are also possible using copper cable extender technologies, for which there are three (3) basic approaches:  HDBaseT™ Extenders, Active Cable Extenders (ACE™), and Splitter / Repeaters.

HDBaseT™ Extenders

DVIGear offers a wide range of copper cable extender solutions that utilize a variety of copper cable mediums, including: DVI/HDMI cables, CAT‑X category cables and coaxial cables.  Each type of extender offers certain advantages for different applications and budgets.  In most cases, these extenders utilize two elements:

Transmitter Unit - accepts an input signal from the source device and conditions it for transport over the intended copper cable medium.

Receiver Unit - receives the signal from the Transmitter Unit and converts the signal to the intended output format for display or routing further downstream in the signal chain.

HDMI HDBaseT Extender, 70m DVI-7520-TX / DVI-7520-RX
DVIGear models DVI-7520-TX and DVI-7520-RX form a high-performance, low-cost HDBaseT twisted pair extension system for professional applications that require DVI or HDMI as well as control signal distribution.  more details >
Price: $398.00

HDMI HDBaseT Extender, 100m DVI-7525-TX / DVI-7525-RX
DVIGear models DVI-7525-TX and DVI-7525-RX form a high-performance HDBaseT twisted pair extension system for professional applications that require DVI or HDMI as well as control and Ethernet signal distribution more details >

Price: $520.00

This unit can be used to simplify power distribution to various devices within a rack environment.  The DVI-7520-PDU provides +12VDC power for up to eight (8) products such as DVIGear's DVI-7520/25 HDBaseT Extenders.  more details >
Price: $450.00

link to large image DVI-7520-PSX
Power Supply Extension Cable - 2-pin, 3.5 mm pitch Phoenix to Screw lock 5.5 x 2.1mm, 1.6mm
Price: $9.95

The DVI-7520-RMK is a full width Rack Mount Kit that allows DVIGear HDBaseT Extender units to be mounted securely within a 19" rack.  Two DVI-7520-PDU units may also be mounted side by side using the DVI-7520-RMK.
Price: $79.00

Active Cable Extenders (ACE™)

The most common type of extender technology is the active cable equalizer.  Long cables suffer from high levels of insertion losses caused by cable capacitance.  When insertion losses become too high, the cable will introduce an excessive amount of jitter (known as additive jitter) to the digital signal, which can severely degrade the cable's performance.  A cable equalizer can help mitigate insertion losses by restoring high frequency components of the digital signal; at the same time this reduces jitter to acceptable levels.  Today, nearly all modern displays have a certain level of cable equalization on their DVI and HDMI inputs; however, in most cases, the amount of equalization is only enough for cable lengths up to 65 ft. (~ 20 meters).  DVIGear's range of Active Cable Extenders (ACE™) provides sufficient range to equalize cable lengths of up to 200 ft. (~ 60 meters).

DVI Single-Link Active Cable Extender™ DVI-7171c
Extends Single-Link DVI Cables up to 200 ft. (~ 60 meters) more details >
Price: $149.00

DVI Dual-Link Active Cable Extender™ DVI-7176b
Extends Dual-Link DVI Cables up to 200 ft. (~ 60 meters) more details >
Price: $195.00

HDMI Active Cable Extender™ DVI-7370c
Extends HDMI Cables up to 200 ft. (~ 60 meters) more details >
Price: $149.00

Splitter / Repeaters

Splitter / Repeaters

In the digital world, the number one signal quality problem is excessive jitter.  Jitter can be caused by a wide range of factors and every component in the digital signal chain adds a certain amount of jitter to the signal.  In complex systems the resulting aggregate jitter can make the signal unusable.  To solve this problem, the digital signal must be fully "re-clocked" using a digital repeater.  These devices receive, de-serialize, buffer, re-serialize and then re-transmit the digital signal.  In doing so they can make a significant reduction in signal jitter and other degenerative effects intrinsic in long cables runs.  Repeaters can be used at the source side of long cable run to “clean-up” a noisy transmitter.  They can be used at the display side end of long cable, and they can be used in the middle of two long cables for increased range.  Unlike many competitive units, DVIGear’s range of DVI and HDMI Splitter/Repeaters fully re-clock the input signal, and offer independent re-clocked outputs.
more details >

HDBaseT™ is a trademark of the HDBaseT Alliance.