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LED screen controller model query method, equipment compatibility testing guide

2025-11-06 43


Three core positioning points of controller models

​More than 89% of technical failures result from model identification errors​ ​, can be accurately positioned through the following methods:

  • ​Metal nameplate logo​ ​: Galvanized steel plate marking area on the back of the box (font height ≥ 2mm)
  • ​System information interface​ ​: Click "About Device" 5 times in the brightness adjustment menu to activate engineering mode.
  • ​Control software identification​ ​: Connection includes​ ​1920Hz refresh rate protocol​ ​The sending card automatically reads the device tree

Special Note: Use​ ​Intelligent brightness adjustment technology​ ​The firmware version of the device needs to be checked. For example, the outdoor model V3.2.7 or above supports the 4000-7500cd/m² dynamic compensation function.

LED screen controller model query method, equipment compatibility testing guide

Compatibility comparison table between old and new models

Characteristic parametersPre-2018 equipmentEquipment after 2020Verification method
​Maximum load​650,000 pixels2.56 million pixelsGrayscale gradient test
​Communication protocol​single cable transmissionDual channel redundancyUnplug detection method
​refresh rate​960Hz≥1920HzHigh speed camera verification

It is recommended to give priority to​ ​Full life cycle technical support​ ​service provider, an international competition project adopted a belt​ ​Quick disassembly and assembly protocol​ ​The controller can complete the simultaneous switching of 128 screens in 15 minutes.


Five practical tips for model identification

  1. ​perspective light source detection method​ ​: Use light of more than 2000 lumens to illuminate the control card chip (the authentic silk screen printing is clear and has no ghosting)
  2. ​Firmware reverse query​ ​: Check the production batch in the manufacturer's database through the 8-digit check code
  3. ​load stress test​ ​: Continuously play 4K@60Hz video for 12 hours to observe the temperature rise curve
  4. ​Interface protocol verification​ ​: HDMI2.0 interface needs to support 18Gbps data throughput
  5. ​After-sales traceability system​ ​: Requires a provision containing​ ​ISO9001 certification code​ ​technical documentation

Typical case: An overseas project passed​ ​Aluminum magnesium zinc box number​ ​Traceable to the source, it accurately matches the rental screen controller produced three years ago, saving 62% of equipment replacement costs.


Choosing a controller model is essentially an investment decision in system stability. It is recommended to create a​ ​Brightness Uniformity Log​​、​​Thermal Performance Map​​、​​Signal attenuation record​ ​A three-dimensional assessment model will upgrade equipment life cycle management from empirical judgment to a data-driven model.

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