How do I tune the receiver to get the best image quality?

Every CatX extender receiver has a ‘Tune’ control. This control is used to obtain the best quality image depending on the length of cable between the transmitter and the receiver unit.

The ‘Tune’ control is factory set in the central position. It may then be turned to the left or right in order to produce a clear bright image.

What is the ‘Skew’ effect?

UTP cable is manufactured by ‘twisting’ together 4 pairs of small cables. Three of these pairs carry the RGB (Red, Green and Blue) colours of the VGA signal. The number of ‘twists’ per unit length of each pair may vary slightly. This can cause each of the three colours to appear to shift to the left or right.

The effect seen by the viewer is that slight shadows of different colours can be seen on the output image.

In most Cat5 cables up to 100m, this effect may be minimal, but in certain cases it can be very pronounced.

Because this is an effect that is most likely with longer lengths of Cat5, or especially Cat6 cable, all 300m CatX receivers have a ‘Skew Correction’ system.

Two additional controls (S & Q) are available. Correcting any skew effect with these controls takes a few seconds.