Scene Double SDBX/SA2-1 User's Guide download pdf (Page 25)

Remote Unit Configuration & Operation 23

Adjusting Video

PS/2 Mini Extender Remote Units incorporate video equalization circuitry,

allowing you to compensate for the loss in image quality that occurs when

video signals are transmitted along CATx cables. At the factory, Remote Units

are configured to optimize the video signals for Interconnect cables up to 25m

in length.

If you intend to use cables of 25-50m in length:

1. Ensure that you have installed and powered up the system according to the

instructions in Section 3.

2. Enter Command Mode by pressing the following key combination on the

remote console keyboard:

3. By default, both channels are selected for adjustment and this is indicated

by slow flashing of the keyboard status LEDs (Num Lock, Caps Lock,

Scroll Lock). If you want to select a single channel press the corresponding

numbered key:

Video channel Command Keyboard Status LED action

Channel 1

<1>

Single flashes

Channel 2

<2>

Double flashes

Both channels <0> (default) Slow single flashes

4. Press the following key combination to change the video equalization

setting:

Note: This command toggles the video equalization setting; repeat the

procedure to revert to the original setting for a shorter interconnection cable

length (<25m).

5. If you are using one or more flat panel monitors in the remote console,

carry out auto-adjustment as described in the monitor’s

documentation. Sometimes manual adjust of clock and/or phase is also

required for optimum results and minimization of jitter.

Technical Note: This video compensation does not correct color

separation (skew). Although skew can be an issue on some CATx cables, it

would not normally be observed on cables <50m. Even so, we still

recommend the use of low skew cables with PS/2 Mini Extenders. You can

check whether skew is a problem in your system by viewing the test card

at: http://testcard.kvmextender.info.

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