Question

How to configure and debug the control system (such as sending card and receiving card) of P6 LED display screen?

Answer 1

Frequently Asked Questions and Troubleshooting

① Screen Not Lighting Up

If the entire screen or a large portion of it is completely blank, it's usually due to the sending card or receiving card not being properly recognized.

Check the following:

Confirm that the control software has correctly identified the sending card and receiving card.

Check if the IP addresses of the sending card and receiving card are on the same network segment.

Check if the network cable connection is secure and if there are any broken wires or incorrect port connections.

Confirm that the sending card driver is successfully installed and that the software parameters have been saved to the hardware.

② Screen Flickering, Stripes, or Image Distortion

If you experience screen flickering, horizontal or vertical stripes, or image misalignment, it's usually related to the scanning method or signal transmission.

Troubleshooting steps include:

Check if the scanning method set in the receiving card matches the P6 module specifications.

Confirm that the screen resolution settings are correct (width × height pixels).

Replace or re-crimp the network cable; avoid using low-quality or excessively long unshielded network cables.

Check if there is data attenuation due to excessive multi-stage series connections of the signal.

③ Partial Blank Screen or Abnormal Areas

If only a specific area or section is not displaying, it's usually a local hardware problem.

It is recommended to troubleshoot using the following steps:

Test the receiving card corresponding to that area to see if it is working properly.

Check if the ribbon cable between the receiving card and the LED module is loose or connected incorrectly.

Swap the positions of the receiving card or module to determine whether the fault is with the receiving card or the module.

If necessary, replace the damaged receiving card or LED module.

④ Color Deviation or Uneven Brightness

If the screen colors are off, washed out, or the brightness is uneven, it's mostly a parameter calibration issue.

Solutions include:

Perform grayscale, brightness, and Gamma correction in the control software.

Adjust the red, green, and blue color ratios to complete white balance correction.

Ensure that all receiving cards use the same display parameter configuration.

After calibration, save the parameters to the sending card or receiving card to prevent data loss due to power failure.

Answer 2

This document describes the configuration and debugging of the control system for a P6 LED display screen (referring to an indoor or outdoor full-color LED screen with a pixel pitch of 6mm). This involves the sender card, receiving card, display control software, and the correct connection of the signal links. Below is a systematic and detailed operating instruction:

1️⃣ System Components

A complete P6 LED display control system generally includes:

Computer Control Terminal

Installs display control software (commonly used: NovaLCT, LEDStudio, Linsn LED, Colorlight, etc.)

Used for screen content editing, sending, and parameter configuration

Sending Card

Receives video signals from the computer (HDMI/DVI/network cable)

Converts display data into network data packets and sends them to the receiving card

Common models: NovaPro, Colorlight T series, Linsn TS series

Receiving Card

Receives data from the sending card

Drives LED modules to light up pixel by pixel

Common models: Nova M series, Colorlight A/B series, Linsn RV series

LED Module/Panel

Displays images according to the actual pixels

Each module usually consists of several RGB LEDs

Network Connection

Sending card → Receiving card usually uses a network cable (CAT5e/6), with multi-level cascading for large screens

Power and ground wires need independent protection

2️⃣ Sending Card Configuration Steps

Hardware Connection

Computer → HDMI/DVI → Sending Card

Sending Card → Network Cable → First row of receiving cards

Driver Installation

The sending card manufacturer usually provides drivers and control software

After the driver is installed, the sending card model can be identified through the software

Software Recognition of Sending Card

Open the software, usually check the sending card status in "Device Management" or "Hardware Detection"

Confirm that the software can recognize the sending card model and serial number

Setting Screen Parameters

Resolution: Screen physical resolution (number of module columns × number of rows × number of modules)

Scanning Method: P6 is usually 1/4 scan

Scanning Frequency: The large screen manufacturer provides recommended values, generally 60Hz or higher

3️⃣ Receiving Card Configuration

Hardware Connection

Each LED module has a receiving card interface

Connect the receiving card to the LED module correctly according to the manufacturer's instructions

Connect the sending card to the receiving card with a network cable

Software Binding

Open the control software → Scan receiving cards

The software generally supports automatic IP identification or manual IP configuration

Assign the position of each receiving card in the large screen (row/column/module number)

Brightness and Grayscale Adjustment

P6 display screen brightness is usually 800–1200 nits (Indoor low brightness adjustable)

Grayscale is generally at least 14-bit (software adjustable Gamma correction)

4️⃣ Data Line and Network Card Configuration

Physical Network Cable Requirements

CAT5e or CAT6, Gigabit port preferred

For long distances >50m outdoors, a repeater or fiber optic converter is required.

IP Address and Subnet

The sending card and receiving card must be on the same network segment.

Common: Sending card 192.168.1.100, receiving card 192.168.1.x

Data Transmission Debugging

Send test images (color bars, text) using the software.

Confirm that all modules are lit normally and there are no screen artifacts.

5️⃣ Debugging and Calibration

Initial Screen Brightness

Send color bars and grid patterns to check for dead pixels, brightness, and color deviations.

Adjust brightness, color temperature, and Gamma in the software.

Partition Testing

Large screens can be tested in partitions to avoid signal congestion during full-screen debugging.

Check that each receiving card responds correctly.

Refresh Rate and Scanning Method Confirmation

Ensure the refresh rate is ≥ 60Hz, and the scanning method matches the module.

Too low a refresh rate will cause screen flickering, and mismatched scanning methods will cause line errors.

Color Correction

Software can perform color correction (white balance, red-green-blue ratio adjustment).

After correction, save the parameters to the sending card or receiving card.

Tips

Before debugging, try to perform a simulation test on a small desktop screen to familiarize yourself with the software operation.

Keep LED screen wiring as neat as possible to avoid cross-interference.

When debugging large screens, it is recommended to start with low brightness to avoid eye strain.

After completing the software operation, be sure to save the parameters to the hardware, otherwise they will be lost when the power is turned off.

Answer 3

The configuration and debugging of the P6 LED display control system should be performed according to the following steps, ensuring correct hardware connections and software settings:

I. Hardware Connection Preparation

Equipment Installation

Connect the sending card to the graphics card via a DVI cable, and the serial cable to the computer's serial port (e.g., RS232).

Connect the receiving card to the computer via a network cable. Connect the adapter card and the receiving card with a flat cable, ensuring that adjacent signal lines are twisted together and do not cross.

Connect the modules to the adapter card using ribbon cables, paying attention to the correct power polarity and signal line connections.

System Power Supply

Connect +5V power to the sending card, receiving card, and display driver card.

II. Software Settings and Debugging

Graphics Card Resolution Adjustment

Enter the NVIDIA control panel and set the resolution to match the sending card's display mode (it must be greater than the large screen resolution), and enable clone mode.

Receiving Card Parameter Configuration

Log in through the software (e.g., NovaLCT—MARS) and enter the receiving card interface settings:

LED Panel Information: Select the chip type (e.g., MBI5024), scanning method, and decoding method.

Cabinet Information: Define the module arrangement shape (rectangular/non-rectangular) and width/height pixel count.

Performance Settings: Adjust parameters such as refresh rate, grayscale levels, and duty cycle to optimize the display effect.

Smart Setup Wizard

After connecting the modules to the receiving card, enter the smart setup wizard:

Select the display screen type (e.g., full-color real pixel).

Enter module parameters (pixel count, data interface count, etc.).

Select the virtual pixel arrangement method based on the LED panel chip type.

III. Debugging Precautions

Signal Check: During debugging, observe the display screen changes to ensure all connections are correct. A flashing green light on the receiving card indicates a normal signal.

Parameter Matching: The sending card resolution and receiving card settings must be strictly consistent to avoid display abnormalities.

Troubleshooting: If you encounter display misalignment or flickering, you can adjust the shift clock phase parameter.

By following these steps, you can complete the configuration and debugging of the P6 LED display control system, ensuring stable display performance.

Answer 4

✅ The control system of the P6 LED display requires software configuration to set the parameters of the sending and receiving cards, graphics card mode, connection method, and screen parameters to achieve synchronized display.

Background

P6 LED displays typically use a synchronous control system, consisting of a sending card (installed in the computer) and receiving cards (installed in the screen), working with control software to achieve real-time mapping of high-refresh-rate, full-color video. The core is to ensure that the computer's output signal is correctly divided and transmitted to each receiving card, thereby driving the entire screen to display normally.

The following is a general configuration and debugging process based on common systems such as Linsn and Nova:

Configuration and Debugging Steps

1. Hardware Connection

Sending card installation: Insert the sending card into the computer's PCI-E slot (some models support USB power or external power supply).

Network cable connection:

Use a Category 5e or Category 6 network cable to connect the sending card's U port to the first receiving card;

Receiving cards are also cascaded using network cables.

Power supply: Provide a stable 5V power supply to all receiving cards to avoid black screen or distorted display due to insufficient voltage.

2. Software Preparation

Install the corresponding brand's control software, such as:

Linsn system: LEDStudio10 or LEDPlayer;

Nova system: NovaLCT-Mars.

If prompted to install a driver (such as the CP210 USB driver), be sure to install it to ensure normal communication. [USB driver installation tutorial]

3. Graphics Card Settings (Critical)

Right-click on the desktop → enter the graphics card control panel (e.g., NVIDIA/AMD);

Set to "Duplicate Mode" to ensure the sending card receives the same image signal as the main display;

Setting to "Extend Mode" may result in the entire screen not lighting up or some content being missing.

4. Receiving Card Parameter Settings (Core)

After opening the control software, perform the following operations:

Step 1: Open "Software Settings" → enter the password to access the hardware parameters interface (common default password: ), the password is case-sensitive, and "linsn" must be entered in lowercase.

Step 2: Load the scan file or use the "Smart Settings" wizard to automatically identify module parameters, including the number of pixels (X/Y), number of data interfaces, decoding method, and scanning method (e.g., 8-scan). Step 3: Set the actual loaded width and height.  These must be equal to or greater than the physical screen dimensions.

Step 4: Configure advanced parameters such as refresh rate, grayscale level, and shift clock. A higher refresh rate results in a more stable image, but the loaded width is limited; an excessively high clock speed may cause flickering.

If the loading program is incorrect, it will lead to display abnormalities. Therefore, it is recommended to use the "Smart Settings" function for assistance during initial debugging.

5. Screen Connection and Area Settings

Select "Standard Display" in "Display Connection";

Enter the number of cards in the horizontal and vertical directions (i.e., the total distribution of receiving cards);

Set the starting coordinates (usually 0,0) and total resolution of the "Large Screen Area"; Graphics card driver download

Click "Send to Receiving Card" and save the configuration file (e.g., .CON file) for future use.

6. Testing and Optimization

Observe whether the screen is fully lit and free of screen artifacts or misalignment;

If there are local abnormalities, check the network cable connection and power supply of the corresponding receiving card;

Use the software's built-in brightness adjustment and color correction functions to improve overall consistency.

Suggestions

For initial debugging, connect only one receiving card and one module. After completing the smart settings, expand to the rest of the system to significantly reduce the probability of errors.

Save each successful configuration file (e.g., RCG, CON files) for quick recovery during future maintenance.

If the system cannot recognize the sending card, please check the PCI-E slot contact, driver installation status, and power supply.

Answer 5

The control system configuration and debugging of a P6 LED display mainly include hardware connection, software settings, parameter adjustment, and troubleshooting. The following provides guidance based on a general process; specific operations should refer to the equipment manual.

Hardware Connection and Initial Check

First, ensure the hardware connections are correct: insert the sending card into the computer's PCI slot and connect it to the control computer via a USB cable. Connect the sending card's DVI interface to the computer's graphics card output using a DVI cable. Connect the data transmission interface between the sending card and the receiving card (the receiving card usually corresponds to one display screen module) using a network cable. Check the power and cable connections, and confirm that the sending card's indicator light is constantly red (power is normal) and constantly green (signal reception is normal). A constantly green light on the receiving card indicates normal communication.

Software Settings and Resolution Matching

Install the dedicated control software for the LED display (such as Ya'an or Zhifeng Optoelectronics software), and after running it, enter the settings interface. The computer's graphics card resolution needs to match the sending card's resolution: taking an NVIDIA graphics card as an example, change the resolution through the NVIDIA control panel to match the sending card's resolution, and set the multi-monitor mode to "Duplicate". Enter the default password (e.g., 168) to enter the parameter configuration interface.

Sending Card and Receiving Card Parameter Configuration

- Sending Card Settings: In the software, select "Set Parameters," enter the password, and enter the sending card configuration. Set the display screen type (e.g., full-color real pixel screen), resolution (which must be greater than the actual screen resolution), and save the parameters.

- Receiving Card Settings: For a single module controlled by a receiving card (common P6 display module sizes are 32×16 or 64×32 pixels), enter the "Smart Settings" wizard, select the display screen type, module pixel count (e.g., X=32, Y=16), number of data interfaces (determined by the number of pins on the cable, e.g., 16 pins is 1 group), data type (red, green, and blue separated), and decoding method (indoor screens usually use 138 chip decoding). Complete pixel point identification and display status correction according to the wizard.

Large Screen System Connection and Debugging

If it is a multi-module splicing system (e.g., 10×8 modules), set the total number of modules, horizontal card count, and vertical card count in the "Display Screen Connection" option in the software. Assign a serial number to each receiving card (starting from 1 and connecting sequentially), set the width and height to the number of pixels of a single cabinet (e.g., 64×32), and select the corresponding network port of the sending card (main line and branch line). After adjusting parameters such as gamma value and brightness, send the settings to the receiving card and observe whether the screen displays the upper left corner of the computer desktop.

Debugging, Optimization, and Troubleshooting Common Problems

- Refresh Rate and Grayscale: Adjust the refresh rate (e.g., ≥300Hz) and grayscale level according to the ambient light to avoid flickering or color distortion.

- Troubleshooting: If the screen does not display anything, check the network cable connection, the status of the receiving card's green light, and the resolution matching; if the image is misaligned, re-run the intelligent setup wizard to correct the pixels.

- Saving Configuration: After debugging is complete, save the parameter file for future use.