LCD Video Wall News

How to Make a 3x4 Video Wall

2026-01-30

Qtenboard 3x4 LCD Video Wall Project - Vietnam Successful Completion

Qtenboard is proud to announce the successful completion of a 3x4 LCD video wall project in Vietnam. The project proceeded smoothly, and the customer has shared pictures of the final installation, showcasing a vibrant and seamless display.

Delivery and Inspection

Upon receiving the 12-screen video wall, the customer carefully inspected each screen and powered them on to confirm functionality. Thanks to Qtenboard’s premium packaging with thick foam in honeycomb boxes, all screens arrived in perfect condition, ready for installation.

Professional Installation

Step 1: Determine Mounting Positions

The customer first marked the installation points, mounted the wall frame, attached the screen brackets, and installed the wall sockets.

Step 2: Screen Installation

Screens were installed from the bottom row upwards, with wiring completed simultaneously. Each screen is equipped with a control box offering versatile input/output options:

  • 1 × USB
  • 1 × HDMI in
  • 2 × DVI in
  • 1 × VGA in
  • 1 × AV in / 1 × AV out
  • 1 × Audio out
  • 1 × RS232 in / 1 × RS232 out

Accessories included: power cables, RJ45 cables, IR receiver, remote controller, HDMI/DVI/VGA cables, USB-RS232 converter (with driver CD), RS232-RJ45 converter, and the video wall software CD.

Connectivity and Control

Most PCs are equipped with an RS232 port, allowing direct connection to the video wall. If a PC lacks RS232, a USB-RS232 converter is used.

Connection steps:

  • Connect the PC RS232 or USB-RS232 to the RS232-RJ45 converter.
  • Connect to the RS232 in port of the first screen.
  • Link RS232 out of the first screen to RS232 in of the next screen, repeating for all screens.

This setup enables smooth centralized control across all 12 screens.

Content Display

Designed for advertising and multimedia display, this 3x4 LCD video wall uses a 1-in-16-out HDMI splitter:

  • One HDMI cable connects the PC to the splitter input.
  • Twelve HDMI cables connect splitter outputs to each screen’s HDMI input.

After installing the video wall software and completing system debugging, the video wall was ready for full operation.

Outstanding Visual Experience

The Qtenboard 3x4 LCD video wall delivers crisp, synchronized images and videos across all 12 screens, providing an eye-catching and professional display solution.

With precision installation, reliable connectivity, and comprehensive support, Qtenboard ensures every video wall project achieves optimal performance and visual impact.

Click to read the product details and learn about its functional features and actual performance.

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