Novastar MRV412 LED Screen Controller – Receiving Card (DH7512)

The MRV412 is a general receiving card developed by NovaStar. A single MRV412 loads up to 512×512 pixels (NovaLCT V5.3.1 or later required). Supporting various functions such as color management, 18Bit+, pixel-level brightness and chroma calibration, and individual Gamma adjustment for RGB, and 3D, the MRV412 can significantly improve the display effect and user experience. The MRV412 uses 12 standard HUB75E connectors for communication. It supports up to 24 groups of parallel RGB data. On-site setup, operation, and maintenance were all taken into account when designing the hardware and software of the MRV412, allowing for an easier setup, more stable operation, and more efficient maintenance.

Improvements to Reliability

• Loop backup The receiving card and sending card form a loop via the main and backup line connections. If a fault occurs at a location of the lines, the screen can still display the image normally.

• Dual backup of configuration parameters The receiving card configuration parameters are stored in the application area and factory area of the receiving card at the same time. Users usually use the configuration parameters in the application area. If necessary, users can restore the configuration parameters in the factory area to the application area.

• Dual backup of the application program Two copies of the application program are stored in the receiving card at the factory to avoid the problem that the receiving card may get stuck due to program update exceptions.

Improvements to Maintainability

• Mapping function The cabinets can display the receiving card number and Ethernet port information, allowing users to easily obtain the locations and connection topology of receiving cards.

• The setting of a pre-stored image in receiving card The image displayed on the screen during startup or displayed when the Ethernet cable is disconnected or there is no video signal can be customized.

• Temperature and voltage monitoring The receiving card temperature and voltage can be monitored without using peripherals.

• Cabinet LCD The LCD module of the cabinet can display the temperature, voltage, single run time, and total run time of the receiving card.

• Bite error detection The Ethernet port communication quality of the receiving card can be monitored and the number of erroneous packets can be recorded to help troubleshoot network communication problems. NovaLCT V5.2.0 or later is required.

• Firmware program readback The receiving card firmware program can be read back and saved to the local computer. NovaLCT V5.2.0 or later is required.

• Configuration parameter readback The receiving card configuration parameters can be read back and saved to the local computer.

Improvements to Display Effect

• Color management
  Switch the color gamut of the screen between multiple gamuts to enable more precise colors on the screen.

• 18Bit+
  Improve the LED display grayscale by 4 times, avoiding grayscale loss due to low brightness and allowing for a smoother image.

• Pixel level brightness and chroma calibration
  Working with NovaLCT and NovaCLB, the receiving card supports brightness and chroma calibration on each LED, which can effectively remove color discrepancies and greatly improve LED display brightness and chroma consistency, allowing for better image quality.

• Quick adjustment of dark or bright lines
  The dark or bright lines caused by splicing of modules or cabinets can be adjusted to improve the visual experience. The adjustment can be easily made and takes effect immediately.

• 3D function
  Working with the sending card that supports 3D function, the receiving card supports 3D output.

• Individual Gamma adjustment for RGB Working with NovaLCT (V5.2.0 or later) and the sending card that supports this function, the receiving card supports individual adjustment of red Gamma, green Gamma and blue Gamma, which can effectively control image nonuniformity under low grayscale and white balance offset, allowing for a more realistic image.

• Image rotation in 90° increments
  The display image can be set to rotate in multiples of 90° (0°/90°/180°/270°).