Scene Double SDBX/DA2 User's Guide download pdf (Page 23)

Remote Unit Configuration & Operation 21

4. Remote Unit Configuration & Operation

Catx cables are specifically designed for networking applications and not for

transmitting analog video. Your CATx KVM extender includes, and requires,

advanced technology to enable its use at high screen resolutions. This section

describes how to optimize the video signal, configure the Extender system and

operate the Remote Unit.

Video Configuration Overview

To get the best out of your extender system it is essential that you configure it

correctly and tune the video signal. Tuning is necessary because of distortions

that occur in a video signal when it is transmitted over lengthy CATx cables.

Generally, you only need to carry out this procedure after installation.

When you have installed your extender system, run an application that requires

a high screen resolution. Examine the video image on the remote console’s

monitor. You may see some of the following distortion effects:

Smearing Loss of Sharpness

Black smearing at the

right edge of large

horizontal objects such

as title bars.

Blurring and lack of

detail, edges

appearing too

bright and sharp.

Color Separation or Skew

Brightness

Displacement of

individual colors (caused

by timing differences in

RGB signal reception).

Image appears

brighter or darker

than the original.

The Remote Unit’s EQ control allows you to correct smearing and loss of

sharpness effects. The Peak control adjusts video image brightness.

Skew only tends to be a problem at high screen resolutions using long

interconnect cables. We recommend the use of low skew CATx cable for all

applications. Please contact Technical Support for more information.

With some cables, video performance may be improved by using a cross-over

patch cable at each end or an alternative RJ45 pin-out (see Appendix C:

Advanced Cabling Issues (Skew), page 37).

The alternative SDBX range of KVM Extenders has been specifically designed for the

extension of high screen resolutions (1600x1200) over long CATx cables (300m).

SDBX Extenders have fully integrated skew compensation and independent control of

low frequency (LF) and high frequency (HF) cable equalization.

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Scene Double SDBX/DA2 User's Guide Page 23

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