LIGHTWARE UCX-4×3-TPX-TX20 USB-C Matrix Transmitter

Front view (UCX-4×3-TPX-TX20)

1. Configurable Ethernet port RJ45 connector for configurable 1GBase-T Ethernet communication
2. USB-A port The SERVICE-labelled USB-A connector is designed for service functions.
3. Micro USB port The SERVICE-labelled USB mini-B port is designed for service functions.
4. LIVE LED blinking The device is powered on and operational.  off The device is not powered or out of operation
5. RX LED Function will be implemented in a later release.
6. USB-C ports USB-C port for receiving video and audio signals, as well as USB data from the host device.
7. Status LEDs For the details, see the table on the right
8. USB-B ports Upstream ports for connecting USB host devices (e.g. computer).
9. Status LEDs For the details, see the table on the right.
10. HDMI input ports HDMI input port for receiving video and audio signals.
11. Input selection buttons For more details on the button functionality, see the table on the other side. When the LEDs blink green three times after pressing the button, they show that the front panel lock is enabled.

Always use the supplied power supply. Warranty void if damage occurs due to use of a different power source.

Important Safety Instructions

Please read the supplied safety instruction document before using the product and keep it available for future reference.

Introduction

• Lightware’s universal matrix Transmitter switcher exploits the USB-C connectivity for a simplified extension of up to 100m of 4K video, audio, control signals and power providing meeting participants with easy host switching, video resolution capabilities up to 4K@60Hz at 4:4:4, as well as comprehensive and secure Ethernet features.
• The Receiver extender with AVX technology allows users to extend HDMI 2.0 signals up to 4K60 4:4:4 video resolution through a single CATx cable over distances of up to 100 meters. They also support independent USB host switching with USB 2.0, making the pair excellent for meeting room setups.
• The Transmitter / Receiver pair is featured with audio de-embedding function via the 5-pole Phoenix® Comb icon analog audio ports.
• Beyond the benefits of sending high-resolution video over long distances, the pair is also capable of handling various connectivity standards, including bi-directional RS-232, GPIO and OCS as well.
• The Gigabit Ethernet port is also a valuable addition, allowing users to connect an additional device to the network directly through the TPX extender.
• The Transmitter is also capable of powering the Receiver remotely over Ethernet, as the Receiver is PoE compatible.

Rear view (UCX-4×3-TPX-TX20)

1. DC input DC input for local powering. Connect the output to the -2 pole Phoenix connector. For more details, see the powering options on the next page.
2. USB-A ports Downstream ports for connecting USB peripherals (e.g. camera, keyboard, multitouch display).
3. TPX output port RJ45 connector for AVX output signal transmission. See more details about the connector in the Power Supply Options and the Status LEDs sections.
4. HDMI output ports HDMI output ports for sending video and audio signals to the receiver.
5. Status LEDs For more information, see the table on the right.
6. Analog Audio output port Audio output port (5-pole Phoenix®) for balanced analog audio output signal. The signal is de-embedded from the selected video signal.
7. RS-232 ports 3-pole Phoenix® connectors for bi-directional RS-232 communication.
8. GPIO port 8-pole Phoenix® connector for configurable general purpose. Max. input/output voltage is 5V, see the details on the next page.
9. Configurable Ethernet ports RJ45 connectors for configurable 1GBase-T Ethernet communication.

The overall power supply of the USB-A connectors is beyond 1.5A, which makes it possible to supply devices with higher voltage requirements. Some ports are not available on certain models. See the User Manual for more information.

Box Contents

1. 12V DC adaptor with interchangeable plugs for HDMI-UCX-TPX-RX107 and 24V adaptor with IEC power cable for UCX-4×3-TPX-TX20, UCX-2×1-TPX-TX20 and DCX-3×1-TPX-TX10.
2. Only for the transmitter (TX) devices. DCX-3×1-TPX-TX10 model is not supplied with an 8-pole and a 3-pole Phoenix connector.

Front view (HDMI-UCX-TPX-RX107)

1. Gigabit Ethernet ports 1Gbase-T RJ45 connectors for user Ethernet purpose.
2. USB-A ports Downstream ports for connecting USB peripherals (e.g. camera, keyboard, multitouch display).
3. Video signal LED For more information, see the table on the right.
4. Power/LIVE LEDoff Device is not powered. blinking between 50% and 100% brightness (green) Device is powered on and operational.
5. OCS sensor 3-pole Phoenix® connector (male) for connecting an occupancy sensor. The port provides 24V output voltage (50mA).

The overall power supply of the USB-A connectors is beyond 1.5A, which makes it possible to supply devices with higher voltage requirements.

Rear view (HDMI-UCX-TPX-RX107)

1. Analog audio output port Audio output port (5-pole Phoenix®) for balanced analog audio output signal. The signal is de-embedded from the selected video signal.
2. Factory reset button Hidden button for setting the device to factory default values.
3. HDMI output port HDMI output ports for connecting sink devices (e.g. displays).
4. TPX input port RJ45 connector for AVX input signal transmission. See more details about the connector in the Power Supply Options and the Status LEDs sections.
5. RS-232 port 3-pole Phoenix® connector for bi-directional RS-232 communication.
6. DC input DC input for local powering. For more details, see the powering options next page.

Status LEDs

Rear Panel LEDs

Video Output Status			Transmitter
	on	The video signal is present.
	off	The signal is not present or muted. The User’s Manual is also available via the QR code below:

Port diagram for video / audio (UCX-4×3-TPX-TX20)

Port diagram for video / audio (HDMI-UCX-TPX-RX107)

RS-232
The switcher provides a 3-pole Phoenix® connector for bi-directional serial communication. The signal levels are the following:

Output voltage (V)

• Logic low level 3 – 15
• Logic high level -15 – 3

Plug pin assignment: 1: Ground, 2: TX data, 3: RX data

Connecting steps

Powering options

The UCX-4×3-TPX-TX20 is capable of charging a device with 100W over one USB-C port and another device with 20W over the other USB-C port, or charging with 60W over both ports. It is also capable of providing the HDMI-UCX-TPX-RX107 device with remote power through the TPX ports.

The devices can be powered in any of the following ways:

1. Local adaptor for both TX and RX
2. Local adaptor for TX and remote power to RX

Transmitter Side

• TPX Connect a CATx cable between the TPX output port of the transmitter and the TPX input port of the receiver.
• USB-C Connect a USB-C source to the USB-C input port. The applied cable shall be certified for Displayport Alternate mode HBR2 (4×5.4Gbps) applications.
• HDMI in Connect a source to the HDMI input port of the transmitter by a HDMI cable.
• USB-B Optionally connect the USB host.
• HDMI out Connect a sink to the HDMI input port of the transmitter by a HDMI cable.
• RS-232 Optionally for RS-232: connect a device to the RS-232 port.
• Audio out Optionally for analog output: connect an audio device to the analog audio output port by an audio cable.
• USB-A Optionally connect USB peripherals to the USB-A ports with USB cables.
• GPIO Optionally connect a controller/controlled device to the GPIO port.
• Ethernet Optionally connect the device to a LAN network.
• Power Powering on the devices is recommended to do as the final step during the installation. Please check the Power Supply Options section for the details.

Receiver Side

• TPX Connect a CATx cable between the TPX output port of the transmitter and the TPX input port of the receiver.
• HDMI out Connect the sink to the HDMI output port of the receiver by a HDMI cable.
• RS-232 Optionally for RS-232: connect a device to the RS-232 port.
• Audio out Optionally for analog output: connect an audio device to the analog audio output port by an audio cable.
• USB-A Optionally connect USB peripherals to the USB-A ports with USB cables.
• OCS Optionally connect an occupancy sensor to the OCS port.
• Ethernet Connect the device to a LAN network.
• Power Powering on the devices is recommended to do as the final step during the installation. Please check the Power Supply Options section for the details.

Only connect one of the devices to the LAN, in order to avoid creating a network loop!

* Powering via the power adaptor is only necessary if the Receiver is not powered over the Etherenet by the Transmitter.

Factory default settings (UCX-4×3-TPX-TX20)

• IP address Dynamic (DHCP is enabled)
• Hostname lightware-<serialno>
• Video Crosspoint setting I1 on O1, I2 on O2, I3 on O3
• HDCP mode (in) HDCP 2.2
• HDCP mode (out) Auto
• Signal type Auto
• Emulated EDID F47 – (Universal HDMI with PCM audio)
• Audio Crosspoint setting I1 on O4
• Analog audio output levels Volume (dB): 0.00; Balance: 0 (center)
• Video Auto select Disabled
• USB-C Power Limit 60W / 60W
• DP Alternate Mode Policy Auto
• Port Power Role Dual Role
• USB Auto select Follow video O1
• D1-D4 Power 5V Mode Auto
• RS-232 port setting (UCX-4×3-TPX-TX20) 9600 BAUD, 8, N, 1
• RS-232 port setting (HDMI-UCX-TPX-RX107) 115200 BAUD, 8, N, 1
• RS-232 serial over IP Enabled
• HTTP, HTTPS Enabled
• HTTP, HTTPS authentication Disabled
• LARA Disabled

GPIO (General Purpose Input/Output Ports)
The device has seven GPIO pins that operate at TTL digital signal levels and can be set to high or low level (Push-Pull). The direction of the pins can be input or output (adjustable). The signal levels are the following:

Input voltage (V) Output voltage (V) Max. current (mA)

• Logic low level 0 – 0.8 0 – 0.5 30
• Logic high level 2 -5 4.5 – 5 18

Plug pin assignment 1-6: Configurable, 7: 5V (max. 500 mA); 8: Ground The recommended cable for the connectors is the AWG24 (0.2 mm2 diameter) or the generally used ‘alarm cable’ with 4×0.22 mm2 wires.

• The maximum total current for the six GPIO pins is 180 mA, the max. supported input/ output voltage is 5V.

OCS (Occupancy) Sensor

The switcher is supplied with a 3-pole Phoenix® connector (male), which is for connecting an OCS sensor.
Plug pin assignment: 1: Configurable; 2: 24V (max. 50 mA); 3: Ground

The signal levels for the Pin 1 Input voltage (V) Max. current (mA)

• Logic low level 0 – 0.8 30
• Logic high level 2 -5 18

The occupancy sensor connector and the GPIO port are not compatible with each other because of the voltage level difference, please do not connect them directly.

Button functionality – Video Source Selection

UCX-4×3-TPX-TX20

• Push the OUT1 button to set the video input to the TPX OUT1 port.
• Push the OUT2 button to set the video input to the HDMI OUT2 port.
• Push the OUT3 button to set the video input to the HDMI OUT3 port.
• Push the AUDIO OUT button to set the audio source of the analog audio output. The sequence is the following (both for the video and audio switching):

UCX-2×1-TPX-TX20

• Push the IN1 button to select the USB-C port as input for the TPX output port..
• Push the IN2 button to select the HDMI port as input for the TPX output port.
• Push the AUDIO OUT button to set the audio source of the analog audio output .The sequence is the following for the video switching

DCX-3×1-TPX-TX10

• Push the IN1 button to select the USB-C port as input for the TPX output port..
• Push the IN2 button to select the HDMI IN2 port as input for the TPX output port.
• Push the IN3 button to select the HDMI IN3 port as input for the TPX output port.
• Push the AUDIO OUT button to set the audio source of the analog audio output.The sequence is the following for the video switching:

The User’s Manual is also available via the QR code below:

Lightware Visual Engineering PLC. Budapest, Hungary

• sales@lightware.com +36 1 255 3800
• support@lightware.com +36 1 255 3810

©2025 Lightware Visual Engineering. All rights reserved. All trademarks mentioned are the property of their respective owners. Specifications are subject to change without notice. Further information on the device is available at www.lightware.com.

Doc. ver.: 1.4  19210136

FAQ

• Q: What do blinking status LEDs indicate?
  A: Blinking status LEDs indicate that the device is powered on and operational.
• Q: How do I know if a port is selected?
  A: If the LEDs blink once after pressing a button, it indicates that the port is selected.

Documents / Resources

LIGHTWARE UCX-4x3-TPX-TX20 USB-C Matrix Transmitter [pdf] User Guide UCX-4x3-TPX-TX20, UCX-2x1-TPX-TX20, DCX-3x1-TPX-TX10, HDMI-UCX-TPX-RX107, UCX-4x3-TPX-TX20 USB-C Matrix Transmitter, UCX-4x3-TPX-TX20, USB-C Matrix Transmitter, Matrix Transmitter, Transmitter

References

• User Manual