1. Introduction
The MT-VIKI 4K HDMI Matrix Switch 8x8 (Model MT-HD0808-W) is a high-performance professional switching device designed to route up to eight distinct HDMI source signals to any of eight connected HDMI displays. This matrix switch offers flexible control options including front panel buttons, an infrared (IR) remote control, RS232 serial port, LAN port, and a Web-based Graphical User Interface (GUI). It supports resolutions up to 4K@30Hz, 1080P@60Hz, and 3D, along with HDCP decoding and advanced EDID management. The unit is built with a US ADI chip for high bandwidth and synchronous signal switching, making it suitable for various professional audio-visual environments.

Image 1.1: Front view of the MT-VIKI 4K HDMI Matrix Switch 8x8.
2. Safety Information
Please read and follow these safety instructions carefully to ensure safe operation and to prevent damage to the device:
- Do not expose this unit to water, moisture, or excessive humidity.
- Ensure proper ventilation around the unit to prevent overheating.
- Use only the provided power adapter. Using an unauthorized adapter may damage the device and void the warranty.
- Do not attempt to open or modify the unit. Refer all servicing to qualified personnel.
- Keep the device away from sources of heat, direct sunlight, and strong magnetic fields.
- Disconnect power during lightning storms or when unused for long periods.
3. Package Contents
Verify that all items are present in the package:
- 1 x MT-VIKI 4K HDMI Matrix Switch 8x8 (Model: MT-HD0808-W)
- 1 x Power Adapter (DC 12V)
- 1 x IR Remote Control
- 2 x Rack Mount Ears with Screws
- 1 x User Manual / CD Driver (containing MatrixController software)

Image 3.1: MT-VIKI HDMI Matrix Switch and its accessories.
4. Product Overview
Familiarize yourself with the front and rear panels of the MT-VIKI HDMI Matrix Switch.

Image 4.1: Front and Rear Panel Layout.
4.1 Front Panel
- LCD Screen: Displays current input/output status and menu information.
- Power Indicator: Illuminates when the device is powered on.
- IR Receiver: Receives signals from the IR remote control.
- Input Buttons (1-8): Selects the HDMI input source.
- Output Buttons (1-8): Selects the HDMI output display.
- Control Buttons (ALL, EDID, UP, DOWN, ENTER, MENU): Used for system configuration, EDID management, and navigating menus.
4.2 Rear Panel
- HDMI Inputs (IN1-IN8): Connect your HDMI source devices (e.g., Blu-ray player, computer, set-top box).
- HDMI Outputs (OUT1-OUT8): Connect your HDMI display devices (e.g., TV, monitor, projector).
- RS232 In/Out: Serial port for advanced control via a computer or control system.
- LAN Port: Ethernet port for Web GUI control and network-based control.
- DC 12V Power Port: Connect the provided power adapter.
- ON/OFF Switch: Main power switch for the unit.
5. Setup
5.1 Physical Connections
Follow these steps to connect your devices to the HDMI Matrix Switch:
- Ensure all devices (HDMI sources, displays, and the matrix switch) are powered off before making connections.
- Connect your HDMI source devices (e.g., computer, laptop, decoder, set-top box, DVD player) to the HDMI Input ports (IN1-IN8) on the rear panel of the matrix switch using high-quality HDMI cables.
- Connect your HDMI display devices (e.g., monitor, TV, projector) to the HDMI Output ports (OUT1-OUT8) on the rear panel of the matrix switch using high-quality HDMI cables.
- For network control, connect an Ethernet cable from your router or network switch to the LAN Port on the rear panel.
- For serial control, connect an RS232 cable from your control system to the RS232 In port.
- Connect the provided DC 12V Power Adapter to the power port on the rear panel, then plug the adapter into a power outlet.
- Turn on the matrix switch using the ON/OFF switch on the rear panel, then power on your HDMI sources and displays.

Image 5.1: Connection Diagram for the HDMI Matrix Switch.
5.2 Rack Mounting
The MT-VIKI HDMI Matrix Switch is designed for standard 1U 19-inch cabinet/rack mounting. Attach the included rack mount ears to the sides of the unit using the provided screws, then secure the unit into your equipment rack.
5.3 EDID Management
EDID (Extended Display Identification Data) management ensures optimal compatibility between your HDMI sources and displays. The matrix switch supports automatic EDID identification. If you encounter display issues, you may need to manually adjust EDID settings using the front panel 'EDID' button or the Web GUI. Refer to the detailed instructions in the 'Operating Instructions' section for EDID configuration.
6. Operating Instructions
The MT-VIKI HDMI Matrix Switch offers multiple methods for controlling input and output routing.
6.1 Front Panel Control
Use the buttons on the front panel to select inputs and outputs:
- To route a specific input to an output: Press the desired Input button (1-8), then press the desired Output button (1-8). The LCD screen will confirm the routing.
- To route one input to all outputs: Press the desired Input button (1-8), then press the ALL button.
- The EDID button allows for EDID management. Use UP/DOWN to navigate and ENTER to confirm.
- The MENU button accesses system settings. Use UP/DOWN to navigate and ENTER to confirm.

Image 6.1: Front Panel Control Buttons.
6.2 IR Remote Control
The included IR remote control provides convenient wireless operation:
- Point the remote directly at the IR receiver on the front panel of the matrix switch.
- Use the numbered buttons to select inputs and outputs, similar to the front panel.
- Dedicated buttons for 'ALL', 'EDID', and menu navigation are also available on the remote.
6.3 Web GUI Control
The Web GUI offers a graphical interface for comprehensive control and configuration:
- Ensure the matrix switch is connected to your network via the LAN port.
- Install the 'MatrixController' software from the provided CD driver on a computer connected to the same network.
- Open a web browser and enter the IP address of the matrix switch (refer to the software or device settings for the default IP).
- The Web GUI will load, allowing you to manage input/output routing, EDID settings, and other system parameters.
- Note on Language: Some users have reported that the Web GUI may default to Chinese upon access. Always ensure the language is set to English. Be cautious with buttons near the language selection, as some users have reported an 'OK' button in this area can trigger a factory reset without confirmation.

Image 6.2: Example of the Web GUI interface.
6.4 RS232 and LAN Port Control
For integration into professional control systems, the matrix switch can be controlled via RS232 serial commands or network commands through the LAN port. Refer to the detailed command protocol provided in the 'MatrixController' software or contact MT-VIKI support for documentation.
6.5 Switching Configurations
The 8x8 matrix allows for various display configurations:
- Independent Routing: Each display can select a standalone input source.
- Partial Sharing: A group of displays can share the same input source while others show different content.
- Full Sharing: All displays can show the same input source simultaneously.

Image 6.3: Examples of various screen configurations.
7. Specifications
| Feature | Description |
|---|---|
| Model Number | MT-HD0808-W |
| HDMI Inputs | 8 |
| HDMI Outputs | 8 |
| Max Resolution | 4K@30Hz, 1080P@60Hz, 3D |
| HDCP Support | Yes |
| Audio Formats | PCM, Dolby AC3, DTS5.1, DTS7.1, DSD |
| Control Methods | Front Panel Buttons, IR Remote, RS232, LAN (Web GUI) |
| ESD Protection | 8KV |
| Bandwidth | 12.75G (US ADI Chip) |
| Power Supply | DC 12V |
| Dimensions | 22 x 17.2 x 5.8 inches (Package) |
| Item Weight | 8.88 pounds |
8. Troubleshooting
If you encounter issues with your MT-VIKI HDMI Matrix Switch, refer to the following common problems and solutions:
- No Signal or Display:
- Ensure all HDMI cables are securely connected to both the source and display devices, and to the matrix switch.
- Verify that the matrix switch and all connected devices are powered on.
- Check the selected input and output on the matrix switch to ensure correct routing.
- Try adjusting the EDID settings. Sometimes, a manual EDID configuration can resolve compatibility issues.
- Test with different HDMI cables or source/display devices to isolate the problem.
- Control Issues (Remote/Front Panel):
- For IR remote control, ensure there are no obstructions between the remote and the IR receiver. Replace remote batteries if necessary.
- For front panel buttons, ensure they are not stuck and respond to presses.
- Web GUI Language Resets to Chinese:
- This is a known issue for some users. After selecting English (or your preferred language), be extremely cautious with any 'OK' or 'Apply' buttons nearby, as some have been reported to trigger a factory reset. There is currently no firmware update to make the device remember the last language used.
- Device Power Cycling or Not Powering On:
- Ensure the power adapter is correctly connected and functioning.
- Verify the power outlet is active.
- If the issue persists, disconnect all HDMI cables and try powering on the unit. If it powers on normally, reconnect cables one by one to identify a potentially faulty cable or device.
9. Maintenance
To ensure the longevity and optimal performance of your MT-VIKI HDMI Matrix Switch, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Do not use liquid or aerosol cleaners, as they may damage the finish or internal components.
- Ventilation: Ensure that the ventilation openings on the unit are not blocked. Proper airflow prevents overheating.
- Storage: If storing the unit for an extended period, disconnect it from power and store it in a cool, dry place away from direct sunlight and extreme temperatures.
- Cable Management: Periodically check HDMI and power cable connections to ensure they are secure and free from damage.
10. Warranty and Support
MT-VIKI products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please contact your authorized MT-VIKI dealer or visit the official MT-VIKI website. Please have your product model number (MT-HD0808-W) and purchase details ready when contacting support.





