1. Introduction
The Cable Matters Model 103002 HDMI Extender with TCP/IP allows for the extension of HDMI audio and video signals over a single Cat 6 UTP/STP cable. This system supports 1080p resolution up to 300 feet and includes IR control functionality. It can be configured for a direct connection or a 1-to-many setup using a dedicated network switch.
2. Package Contents

This image displays all items included in the Cable Matters Model 103002 HDMI Extender package. It shows the transmitter and receiver units, two HDMI cables, two 5V DC power adapters, IR transmitter and receiver cables, four L-mounting brackets with screws, and the user manual.
- 1 x HDMI Transmitter
- 1 x HDMI Receiver
- 2 x HDMI Cables (6 feet)
- 2 x 5V DC Power Adapters (5 feet)
- 1 x IR Transmitter Cable (5 feet)
- 1 x IR Receiver Cable (5 feet)
- 4 x L-Mounting Brackets & Screws
- 1 x User Manual
3. Product Overview

This image shows the Cable Matters HDMI Extender Transmitter and Receiver units. Both units are black with a blue accent and feature ventilation slots. The transmitter has a "VIDEO IN" HDMI port, a "DC 5V" power input, a "Reset" button, and an "IR-T" port. The receiver has a "VIDEO OUT" HDMI port, a "DC 5V" power input, a "Reset" button, and an "IR-R" port. Both units also feature an RJ45 port for the Cat 6 cable connection.
Transmitter Unit
- HDMI IN: Connects to the HDMI source device.
- IR-T: Connects to the IR Transmitter cable to send IR signals from the remote location.
- RJ45 Port: Connects to the Cat 6 cable for signal transmission.
- DC 5V: Power input for the transmitter.
- Reset Button: Used for resetting the unit.
Receiver Unit
- HDMI OUT: Connects to the HDMI display device (HDTV, monitor, projector).
- IR-R: Connects to the IR Receiver cable to receive IR signals from the remote control.
- RJ45 Port: Connects to the Cat 6 cable for signal reception.
- DC 5V: Power input for the receiver.
- Reset Button: Used for resetting the unit.
4. Setup and Installation
4.1 Direct Connection (1-to-1 Setup)

This diagram illustrates a direct connection setup. An HDMI source connects to the Transmitter's HDMI IN. A Cat 6 cable connects the Transmitter's RJ45 port to the Receiver's RJ45 port. The Receiver's HDMI OUT connects to an HDMI display. Power adapters are connected to both units. IR-T connects to the source, and IR-R connects to the remote control's line of sight at the display end.
- Connect your HDMI source device (e.g., computer, Blu-ray player) to the HDMI IN port of the Transmitter unit using an HDMI cable.
- Connect a single Cat 6 UTP/STP cable (up to 300 feet) between the RJ45 port of the Transmitter and the RJ45 port of the Receiver.
- Connect your HDMI display device (e.g., HDTV, monitor, projector) to the HDMI OUT port of the Receiver unit using an HDMI cable.
- Connect the included 5V DC power adapters to both the Transmitter and Receiver units and plug them into power outlets.
- For IR control, connect the IR Transmitter cable to the IR-T port on the Transmitter unit and position its emitter near the IR sensor of your source device.
- Connect the IR Receiver cable to the IR-R port on the Receiver unit and position its receiver in line of sight with your remote control.
4.2 1-to-Many Connection (via Dedicated Network Switch)

This image illustrates a 1-to-many setup where a single HDMI source connects to a Transmitter, which then connects to a dedicated network switch. Multiple Receiver units connect to the same switch, each extending the HDMI signal to a separate display, supporting up to 8 receivers and IR control.
This setup allows a single HDMI source to be displayed on up to 8 additional displays by adding Receiver Boxes (sold separately). It requires a dedicated, unmanaged Gigabit Ethernet network switch without Quality of Service (QoS) features. Do not connect through a shared LAN or router with other data traffic.
- Connect your HDMI source device to the HDMI IN port of the Transmitter unit.
- Connect the Transmitter's RJ45 port to an available port on a dedicated, unmanaged Gigabit Ethernet network switch using a Cat 6 cable.
- Connect each Receiver unit's RJ45 port to an available port on the same dedicated network switch using Cat 6 cables.
- Connect each Receiver's HDMI OUT port to its respective HDMI display device.
- Connect the included 5V DC power adapters to all Transmitter and Receiver units and plug them into power outlets.
- For IR control, connect the IR Transmitter cable to the Transmitter unit and position its emitter near the IR sensor of your source device. Connect IR Receiver cables to each Receiver unit and position their receivers in line of sight with your remote control.
Important Note: The network switch used for the 1-to-many setup must be a dedicated, unmanaged Gigabit Ethernet switch without QoS. Connecting these extenders to a shared network with other data traffic or a managed switch with QoS can cause performance issues or network instability.
4.3 Compatibility Considerations

This image highlights compatibility limitations. The Cable Matters HDMI Extender is shown connected to a 1080p display or projector, but explicitly states it is "Not compatible with" HDMI to VGA adapters or HDMI capture cards. This indicates the extender is designed for direct HDMI signal transmission to displays.
- The extender is compatible with HDCP compliant equipment.
- It is not compatible with HDMI to VGA adapters.
- It is not compatible with HDMI capture cards.
5. Operating Instructions

This image displays the supported video resolutions for the HDMI extender, including Full HD 1920x1080, 1280x720, and 720x576. It also indicates support for HDCP 1.1, LPCM audio, and Dolby Digital audio.
Once all connections are made and power is supplied to both units, the HDMI extender system operates automatically. No additional software or drivers are required.
- Video Resolution: Supports 1080p/1080i/720p/576p/576i/480p/480i at 50/60 Hz.
- Audio Support: Supports HDMI High Definition audio, including SACD, DVD-Audio, DTS-HD Master Audio, and Dolby TrueHD.
- IR Control: Use your source device's remote control at the display location to control the source device. Ensure the IR receiver is in line of sight with your remote and the IR emitter is correctly positioned over the source device's IR sensor.
- Plug & Play: The system is designed for plug-and-play operation without dip switch settings.
6. Troubleshooting
- No Video/Audio:
- Ensure all HDMI and Cat 6 cables are securely connected.
- Verify both the Transmitter and Receiver units are powered on.
- Check if the HDMI source device is outputting a signal and the display is set to the correct input.
- Try a different HDMI cable or Cat 6 cable to rule out cable issues.
- If using a network switch, ensure it is a dedicated, unmanaged Gigabit switch without QoS. Avoid shared networks.
- Press the "Reset" button on both units.
- Poor Picture Quality/Flickering:
- Ensure the Cat 6 cable is of good quality and properly terminated.
- Verify the cable length does not exceed 300 feet.
- Check for strong electromagnetic interference (EMI) near the Cat 6 cable run.
- Ensure the power adapters are providing stable power.
- IR Control Not Working:
- Confirm the IR Transmitter cable is correctly positioned over the source device's IR sensor.
- Ensure the IR Receiver cable is in direct line of sight with your remote control.
- Check that the IR cables are securely plugged into the correct ports (IR-T on Transmitter, IR-R on Receiver).
- Network Issues in 1-to-Many Setup:
- Confirm the network switch is dedicated to the HDMI extenders and is unmanaged, without QoS.
- Do not connect the extenders to a shared network or router that handles other data traffic.
7. Specifications
| Model Number | 103002 |
| Supported Resolutions | 1080p/1080i/720p/576p/576i/480p/480i at 50/60 Hz |
| Max Extension Distance | Up to 300 feet (90 meters) over Cat 6 UTP/STP cable |
| Network Requirement | Dedicated, unmanaged Gigabit Ethernet switch (for 1-to-many) |
| IR Control | Supported (IR Transmitter and Receiver cables included) |
| HDCP Support | HDCP 1.1 compliant |
| Audio Support | SACD, DVD-Audio, DTS-HD Master Audio, Dolby TrueHD |
| Power Supply | 5V DC (2x power adapters included) |
| Enclosure Material | Metal |
| Product Dimensions (each unit) | Approximately 5.8 x 4.2 x 2.8 inches |
| Item Weight | 1 pound (total for set) |
8. Maintenance
To ensure the longevity and optimal performance of your HDMI extender:
- Keep the units in a cool, dry environment, away from direct sunlight and excessive heat.
- Clean the units with a soft, dry cloth. Do not use liquid cleaners or aerosols.
- Ensure proper ventilation around the units; avoid blocking the air vents.
- Avoid bending or crimping the Cat 6 and HDMI cables excessively.
- Do not attempt to disassemble or repair the units yourself. Refer to qualified personnel for service.

This image highlights the robust design of the extender units, featuring a sturdy metal enclosure with air vents. The metal construction aids in heat dissipation and helps to minimize electromagnetic interference (EMI) and radio-frequency interference (RFI) noise, contributing to stable operation.
9. Warranty and Support
Cable Matters products are designed for reliability and performance. For warranty information or technical support, please visit the official Cable Matters website or contact their customer service. Details are typically provided with your purchase documentation or on the product packaging.
For further assistance, you may refer to the Cable Matters Store on Amazon.







