If you've ever worked with LED video walls, you’ve probably heard the terms LED sending cards and LED receiving cards thrown around. But what do they mean? And why do they matter when setting up your display?
Let’s break it all down in simple terms—no tech dictionary required.
First, What Are These “Cards” Anyway?
In an LED display system, data must travel from the video source (such as a laptop or media player) to the actual LED panels that comprise the screen. That journey involves two key players:
· The LED Sending Card – Think of it as the system’s dispatcher.
· The LED Receiving Card – This one acts like the translator at the destination.
Let’s look at each one a little closer.
What is an LED Sending Card?
A LED sending card is a device that sends video data from your source (such as a computer or media server) to your LED screen. It uses HDMI, DVI, or other compatible cables and packages that data in a format the LED panels can grasp to link to your source.
Key Functions:
· Processes input signals from video sources.
· Compresses and transmits the signal to the LED screen.
· Connects to multiple receiving cards via network cables.
What is an LED Receiving Card?
Every panel or module of your LED display is housed within an LED receiving card. Its job is to decode the data sent by the LED sending card and display the correct image on that specific part of the screen.
Key Functions:
· Receives and decodes the data signal.
· Controls the individual LEDs on the panel.
· Coordination with other receiving cards creates a coherent image.
Common Usage of Sending and Receiving Cards
Usually seen here, these two cards always complement each other:
· Concert LED walls – where real-time video and effects are crucial.
· Retail store displays – running ads or product visuals.
· Churches or conference halls – displaying lyrics, sermons, or presentations.
· Outdoor LED billboards – for scheduled content or live feeds.
Sending and receiving cards are working behind the scenes regardless of the environment whether there is an LED panel involved.
So, What’s the Difference?
|
Feature |
LED Sending Card |
LED Receiving Card |
|
Location |
Inside the control system (e.g. rack) |
Installed inside each LED module/panel |
|
Function |
Sends data from video source |
Receives and decodes data for display |
|
Controls |
The full screen image |
A specific portion of the image |
|
Cables Used |
HDMI/DVI to source, Ethernet to LED |
Ethernet to communicate with other panels |
|
Quantity Per Setup |
Usually one or two |
One per panel/module |
Are There Different Types?
Yes! Both sending and receiving cards come in various models based on:
· Resolution support (1080p, 4K, etc.)
· Number of outputs or ports
· Latency and refresh rates
· Compatibility with specific controllers (e.g. NovaStar, Colorlight)
Make sure to select cards that are appropriate for your unique LED display and controller system. SinaPlug can help you find the perfect match.
Final Thoughts
Whether you're setting up a concert wall or upgrading a digital billboard, understanding the difference between LED sending cards and receiving cards is essential. Any LED display system's heartbeat is these two elements; when they perform as they should, your graphics stand out.
Need help choosing the right card combo?
SinaPlug has the trusted tools and expert guidance you need to make it simple.