Extending HDMI Cable Reach Using National's DS16EV5110A, DS22EV5110 and DS34RT5110 Equalizers
DVI and HDMI are originally intended to deliver video and data over shorter distances, where the effects of cable losses would have little to negligible effect. However, there are many applications requiring longer cable lengths, such as sending computer graphics to remote displays and routing video throughout home theaters and entertainment venues. Display resolutions, refresh rates and color depths continue to increase and so do the required data rates, at 1.65 Gbps for DVI 1.0 and upto 3.4 Gbps for HDMI 1.3a. Unfortunately, the cables which facilitate this high bandwidth data transfer also cause signal degradation in the form of attenuation, jitter, skew, and crosstalk, which limit the reach between source and display and creates screen flicker, noise sparkles, and audio distortion.
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