1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the J-Tech Digital 4K 2x2 HDMI Video Wall Controller (JTECH-VWM04). This device is designed to manage and display multiple HDMI video sources across various screens, offering advanced features such as video wall configurations, multi-viewer capabilities, and seamless switching.
Figure 1: J-Tech Digital 4K 2x2 HDMI Video Wall Controller with remote and a 2x2 video wall display example.
2. Key Features
- Supports 4K@60Hz 4:2:0 input signals and 4K@30Hz output.
- Seamless switching between input sources without delay or picture loss.
- Each HDMI output can select from 5 different multiviewer presets (e.g., 2x2, 1x3L, 1x3U, 1x4, 4x1) to view multiple source signals on one screen.
- Output resolution can be upscaled or downscaled to 4K30Hz, 1080P, 720P, 2560x1440, 1920x1200, or 1360x768.
- Capable of creating 10 different video wall configurations, including 2x2, 1x4, and 4x1.
- Includes a rotate function to flip any output image 180°.
- Control methods include front panel buttons, RS-232, LAN (web control), and IR remote.
3. Product Overview
3.1 Interface Layout
Figure 2: Front and Back Panel Interface.
Front Panel:
- LED Indicator: Displays current status and menu information.
- Input and Output Buttons: Used for selecting HDMI inputs and outputs.
- Menu Buttons: For navigating and configuring settings.
Back Panel:
- DC/12V Power Input: Connects to the included power adapter.
- RS-232 Port: For serial control via a computer or control system.
- LAN Port (Ethernet): For web-based control and firmware updates.
- HDMI Input Ports (INPUT1-INPUT4): Connect your HDMI source devices.
- HDMI Output Ports (OUTPUT1-OUTPUT4): Connect to your HDMI display devices.
4. Setup and Connection
Follow these steps to set up your J-Tech Digital 4K 2x2 HDMI Video Wall Controller:
- Connect HDMI Sources: Connect your HDMI source devices (e.g., PC, Blu-ray player, game console) to the HDMI Input Ports (INPUT1-INPUT4) on the rear panel of the controller using high-quality HDMI cables.
- Connect HDMI Displays: Connect your HDMI display devices (e.g., monitors, televisions) to the HDMI Output Ports (OUTPUT1-OUTPUT4) on the rear panel of the controller using high-quality HDMI cables.
- Connect Power: Plug the included 12V DC power adapter into the DC/12V Power Input port on the controller, then plug the adapter into a power outlet.
- (Optional) Connect LAN: For web control functionality, connect an Ethernet cable from your network router or switch to the LAN port on the controller.
- (Optional) Connect RS-232: For serial control, connect an RS-232 cable from your control system or PC to the RS-232 port on the controller.
Figure 3: Connection Diagram for Seamless Matrix Switch Mode.
5. Operating Modes
5.1 Seamless Matrix Switch Mode
The controller allows for seamless routing of any of the four 4K@60Hz input signals to any combination of the four output displays. This ensures no switching delay or picture loss during transitions. The output ports also feature automatic downscale and upscale functions to match the resolution requirements of connected displays, supporting resolutions such as 4K30Hz, 1080P, 720P, 2560x1440, 1920x1200, and 1360x768.
5.2 Multi-Viewer Modes
Each HDMI output can independently display multiple source signals on a single screen using various multi-viewer presets. This allows for simultaneous monitoring of different inputs on one display. Available presets include 2x2, 1x3L, 1x3U, 1x4, and 4x1 configurations.
Figure 4: Examples of Multi-Viewer Modes.
5.3 Video Wall Display Modes
The controller supports the creation of various video wall configurations using its four HDMI outputs. You can configure up to 10 different video wall layouts, including common setups like 2x2, 1x4, and 4x1. Additionally, a rotate function allows for 180° image rotation on any output, providing flexibility in display orientation.
Figure 5: Various Video Wall Display Modes.
6. Control Methods
The JTECH-VWM04 offers multiple ways to control its functions:
- Front Panel Buttons: Directly select inputs, outputs, and navigate menu options using the buttons on the device's front panel.
- IR Remote Control: Use the included infrared remote control for convenient operation from a distance.
- RS-232 Control: Integrate the controller into a larger control system using RS-232 serial commands. Refer to the technical specifications for command protocols.
- LAN / Web Control: Access a web-based interface by connecting the device to your network via the LAN port. This allows for advanced configuration, video setup, audio control, and preset management through a web browser.
Figure 6: Web Control Interface Overview.
7. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 17.2 x 8.11 x 1.65 inches |
| Item Weight | 7.26 pounds |
| ASIN | B096H6MJRQ |
| Manufacturer | J-Tech Digital |
| Color | Black |
| Connector Type | HDMI |
| Brand | J-Tech Digital |
| Compatible Devices | Monitor, Television |
| Cable Type | HDMI |
8. Troubleshooting
If you encounter issues with your J-Tech Digital 4K 2x2 HDMI Video Wall Controller, consider the following:
- No Video Output: Ensure all HDMI cables are securely connected to both source devices and displays. Verify that the power adapter is properly connected and the unit is powered on. Check that the correct input source is selected for the desired output.
- Incorrect Resolution/Picture Quality: Confirm that your source device is outputting a compatible resolution. Utilize the upscaling/downscaling feature if your display has specific resolution requirements.
- Control Issues: If using the IR remote, ensure there are no obstructions between the remote and the device's IR receiver. For web control, verify network connectivity and the correct IP address.
- Intermittent Signal: Check for loose cable connections. Try using different HDMI cables to rule out cable defects. Ensure all devices are powered on in the correct sequence.
9. Maintenance
To ensure optimal performance and longevity of your J-Tech Digital 4K 2x2 HDMI Video Wall Controller:
- Keep the device in a cool, dry, and well-ventilated area.
- Avoid exposing the unit to direct sunlight, high temperatures, or excessive humidity.
- Clean the device with a soft, dry cloth. Do not use liquid or aerosol cleaners.
- Ensure all cables are properly routed and not under strain.
10. Warranty and Support
All J-Tech Digital products include a One-Year Manufacturer Replacement Warranty. Additionally, free lifetime technical support is provided by our customer support team located in Sugar Land, TX. Support is available from 9 AM – 6 PM CST, Monday through Friday. Contact information is available on the J-Tech Digital seller page.
