Key Digital Champion KD-4X4XC Setup Manual Download Page 4

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Transmitting IR signals with KD-CATHD4X4Rx Baluns

KD-4x4XC can consolidate incoming IR signals to control display/output devices when integrated
with KD-CATHD4x4Rx.
The IR Signal flows only in one direction; from Input (Matrix) to Output (Balun). It cannot be used to
route IR signals from Output (Balun) to Input (Matrix).
The default signal path for Expansion Serial IR Input 1 is output of KD-CATHD4x4Rx output #1 and
continues respectively through Input 4 with Output 4. However, the Input/Output relationship can
be manipulated in full matrix functionality vai RS-232.
When connecting the IR Emitter to the device you wish to control, make sure to find the IR receiver
area on your particular device first. Experiment with locations and test the functionality before
permanently fixing it.

Application Example

Quick Setup Guide:

Connections

1.  Begin with the KD-4X4XC and all input/output devices turned off and power cables removed.
2.  Connect HDMI sources to the appropriate input ports on the KD-4X4XC.
3.  Connect either or both HDMI and CAT5e/6 outputs. You will require 2x CAT5e/6 UTP or STP

cables for each Balun connected.

4. Connect power to the KD-4X4XC as well as to all other input and output devices and turn

them on.

5. Operate the KD-4X4XC switcher via front panel buttons, IR Remote, Serial IR or RS-232

control.

Operation:

After performing the setup above, the unit is ready for operation.
There are several options for controlling the unit. Commands can be issued via IR remote control,
RS-232 or by using the front panel buttons. Note that the advanced commands are available only
via the RS-232 protocol.

Settings

The KD-4X4XC features a library of 9 internal EDID files, in addition to allowing the Input source to
receive a copy of the EDID information of any selected Output connected via HDMI or CAT5e/6.
The default EDID setting is “01” - 1080i w/ PCM 2ch Digital Audio. Changing to different EDID
settings may be necessary when connecting to or from an AV Receiver, or for passing 3D content
derived from a Cable or Satellite source if the default EDID has problems. They can also speed up
the switching process with cable or satellite sources.

Available EDID library settings:

(‘

’ is the default)

1080i w/ PCM 2ch Digital Audio

3D w/ Dolby Audio

1080i w/ HD Audio

3D w/ HD Audio

1080p w/ PCM 2ch Digital Audio

DVI VESA 1280x1024

1080p w/ HD Audio

DVI VESA 1920x1200

3D w/ PCM 2ch Digital Audio

When selecting an EDID from the library (settings 01-09), your source device will “see” the KD-
4X4XC EDID choice instead of the displays EDID, over riding the displays own EDID information.
If your display is not capable of accepting the video resolution or audio type selected, you may
not see a picture or sound. In this case please choose another more compatible EDID, or use the
default EDID.
EDID settings can only be changed through the RS-232 command protocol. See the RS-232
command section below for a list of EDID commands available.

HDMI

CAT5e/6

l C
AT6

Blu-Ray

Cable Box

Satellite Box

HD
M