2
3
Connections, Buttons and LEDs
Rear Panel Connections:
All connections to the KD-4x2CS are found on the rear panel of the unit. Refer to the illustrations
below for port assignments while making connections.
Power Connection
Serial IR
IR Eye
RS-232 Port
Operation Mode
Switch
HDMI Inputs & LEDs
HDMI Outputs & LEDs
Connections
›
HDMI Inputs:
The 4 HDMI Inputs are located on the left side of the back panel. The Inputs have
a blue LED that will illuminate when a source is connected and synced.
›
HDMI Outputs:
The 2 HDMI Outputs are located in the center of the back panel. The Outputs
have a blue LED that will illuminate when a output device is connected and synced.
›
The
RS-232, Serial IR, Optical IR Sensor, Operation Mode Switch and Power connections
are located on the right side of the back panel. The
Operation Mode switch is used to update the unit’s
firmware, which is done using the DB9/RS-232 port. The
firmware version as well as all RS-232 commands is
available through the RS-232 command ‘H’. A detailed list
of RS-232 commands is available later in this guide.
›
If newer firmware is made available, complete updating
instructions will be included with it. Check the Key Digital
website for any firmware updates.
Front Panel Buttons and LEDs
Output Select Buttons
IR Eye
Input
LEDs
Input
LEDs
›
There are 2 Output buttons along the front panel.
›
Pressing an Output button will switch the unit to the next input.
›
A blue LED will indicate which Input has been selected for each Output.
›
There is also an Optical IR window located on the right side of the front panel for IR remote
control signals.
Application Example
HDMI
Blu-Ray
Cable Box
Satellite Box
HDMI
HDMI
HDMI
HDMI
HDMI
HDMI
Display 1
Display 2
Apple TV
KD-4x2CS
RS232 Control
Serial IR
Optical IR
Optical IR
Quick Setup Guide:
1. Begin with the KD-4x2CS and all input/output devices turned off and power cables removed.
2. Connect HDMI sources to the appropriate input ports on the KD-4x2CS.
3. Connect HDMI outputs to the appropriate output device (display, projector, AV Receiver, etc).
4. Connect power to the KD-4x2CS as well as to all other input and output devices
and turn them on.
5. Operate the KD-4x2CS 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.
KD-4x2CS_Manual.indd 2-3
1/31/13 2:46 PM
