- DescriptionThe B840 LED Display Control Board combines a receiving card structure with an integrated AC-to-DC conversion device. This lets LED modules be powered directly without needing an outside power source. It takes in 90Vac to 264Vac and turns it into reliable DC output. It also has built-in protections against voltage drops, too much voltage, too much current, too much power, and short circuits. This configuration makes it easier to install LED display devices while keeping them stable.The B840 LED Display Control Board makes the picture better by applying superior grayscale refinement and per-pixel calibration. It can handle up to 65,536 grayscale levels and improve speed by 22 bits or more, which makes darker parts of the image less inconsistent. Adjusting the gamma values for red, green, and blue separately helps keep the colors more consistent and the tones more balanced. This helps get rid of changes in brightness and color across the display.Low-latency signal handling, quick fixing of brightness gaps between panels, and batch-level brightness adjusting for consistent output across modules are all examples of performance-focused tasks. The B840 LED Display Control Board also works with 3D displays, lets you rotate images in 90-degree steps, and has capabilities for monitoring the system, such as tracking voltage and temperature. Backup solutions for both signal paths and firmware make guarantee that the system keeps working even when something goes wrong.Input Ports1pc AC input that works with a range of 90 to 264VacBuilt-in conversion section that sends DC directly to modulesInternal sensors for temperature and voltage conditionsOutput PortsYou can choose between 3.0V, 3.8V, 4.0V, and 4.2V for the direct DC output.Rated output capacity of 32A Ethernet communication with loop redundancy supportCapabilities for Video InputCan be used with PWM driver IC setups8-bit signals can go up to 640×360@60Hz, and 10-bit and 12-bit signals can go up to 320×[email protected] with M3 and COEX systemsMain FeaturesStructure for a power module and receiving board combinedProcessing for multi-step grayscale refinementAbility to expand grayscale to 22 bits or moreCalibration of brightness and chroma at the pixel levelIndependent tweaking of RGB gammaFast fix for seams that are too bright or too darkEqualizing the brightness of multiple batchesDefault processing of low-delay signals (as low as 1 frame)3D output that works with90° steps for rotating images (0°, 90°, 180°, and 270°)Support for storing and retrieving flash data in modulesMonitoring voltage and temperature in real timeChecking for bit errors in the condition of communicationAbility to read back firmware and settingsLoop backup to make sure signals are always availableTwo places to store configuration settingsA backup system with two firmware versionsSpecifications for ElectricityVoltage input: 90–264 VacThe nominal range is 100 to 240 Vac.47–63 Hz is the frequency.The most current that can come in is 2.3A.Power factor: 0.90 or higher for 240Vac and 0.97 or higher for 100VacUsing power in standby mode: ≤4WRated output current: 32AVoltage levels for output: 3.0V, 3.8V, 4.0V, and 4.2VAccuracy of voltage: ±2.0�ficiency: 88% at 240Vac at mostTime to rise: ≤30msDelay before startup: ≤1sLength of the hold-up: 10 to 15 msRipple noise: less than 200mVThe environment in which it worksThe temperature can be anywhere from -20°C to 70°C.Load drops off after 50°C (1.5% drop for every °C rise)Humidity: 10% to 90% RH, no condensationSupport for heights up to 5000mThe environment for storageThe temperature for storage is between -40°C and 85°C.The humidity level in storage should be between 10% and 90% RH and not condensing.Specifications for the bodySize: board thickness must be less than or equal to 0.2 cmThe total thickness of the profile is ≤2.3 cm.Details about packingUser must install the heat conductive pad.User must install silicone insulating padThe main power part needs at least 0.5 cm of space.Other regions need at least 0.2 cm of space between them.Accessories that come with itNo thermal pad is included.No insulating pad is supplied.
