4. Device Concept
HDMI-TPS-RX220AK – User's Manual
24
Applied firmware package: v1.4.0 | LDC software: v2.4.0b3
The Concept
The UMX-TPS-TX140K transmitter device has two audio sources: an MP3 player with analog audio signal and
a Blu-ray player with embedded HDMI audio. Any of these signals (one in the same time) can be transmitted
to the receiver over the TPS interface.
The HDMI-TPS-RX220AK receiver has two audio sources: the transmitter over the TPS interface and the
laptop over HDMI. The receiver can transmit both audio signals to any of the three outputs: two HDMI output
and the analog audio output.
4.5.
USB KVM Function
ATTENTION!
The USB KVM extension works with the
UMX-TPS-TX140K
transmitter model only.
4.5.1.
Port Diagram
The following figure describes the port diagram of the USB KVM feature:
USB KVM port diagram of the receiver and the transmitter
The controller devices (e.g. keyboard, mouse) are connected to the HDMI-TPS-RX220AK receiver. The USB
signal are transmitted to the transmitter over the TPS interface. The controlled device (e.g. PC) is connected
to the UMX-TPS-TX140K transmitter.
4.5.2.
USB KVM Extension - Example
The Concept
The HDMI-TPS-RX220AK device transmits the USB control signals of the keyboard and the mouse to the
UMX-TPS-TX140K transmitter over the TPS interface. Thereby the PC can be controlled by the USB HID
devices from a distance up to 150 m.
4.6.
Control Features
HDMI-TPS-RX220AK receiver has several control functions. This section is about to present the possibilities
of the different control interfaces, e.g. RS-232, Infrared, Ethernet, CEC and USB.
4.6.1.
Serial Interface
Technical Background
Serial data communication can be established via the local RS-232 port (Phoenix connector) or via the TPS
lines. The RS -232 ports – which are connected to the CPU – can be configured separately (e.g. if the Baud
rates are different, the CPU does the conversion automatically between the ports). The RS-232 port can be
switched to
Pass-through mode
,
Control mode
, or
Command Injection mode
; see the figure below.
ATTENTION!
Only one mode can be used at the same time: Control mode, or Pass-through mode, or
Command Injection mode. If you choose one of them, TPS serial link and local RS-232 port will operate
in the same mode.
Pass-through Mode
Block diagram of the serial interface in pass-through mode
In pass-through mode, the given device forwards the data that is coming from one of its ports to another
same type of port. The command is not processed by the CPU. Incoming serial data is forwarded from TPS
input port to local RS-232 port and vica versa inside the receiver.
Control Mode
Block diagram of the serial interface in control mode
The incoming data from the given port is processed and interpreted by the CPU. The mode allows to control
the receiver directly. LW2 or LW3 protocol commands are accepted – depending on the current port setting.