ALC-1920 LCD Controller Board

The ALC-1920 combines three of the most popular input formats, HDMI, DisplayPort, and USB-C in a compact general purpose solution for LCD panels up to 1920x1200 resolution. It is an excellent board to start with for panel and project evaluation as well as ideal for many display products. One of the key features of this compact highly reliable controller is the low signal latency from input signal to panel output signal. In addition the controller now uses ceramic capacitors to further improve reliability.

The ALC-1920 is similar to the long-running models ALR-1920 and ALT-1920. There is also a 4K equivalent, the ALC-4096

LCD Panel Connectivity

• Panel connection: LVDS (2 channel)
• Panel resolutions: Up to 1920x1200. The range of panel resolutions includes all standard panel resolutions as well as custom LCD panel resolutions. For example custom cut panel resolutions can also be supported. The minimum panel resolution supported is 800x600.
• Colors: Up to 8-bit per color
• Panel power: 3.3V, 5V, 12V, 18V
• Backlight inverter/driver support: PWM (8 bit), DPMS Enable pin (5V or 3.3V)

Input: HDMI 1.3 (x1)

• 60Hz up to 1920x1200
• 480p, 576p, 720p, 1080i, 1080p

Function Interface

• On Screen Display (OSD) menu
• Functions can be called by buttons or via serial port (RS-232)

Functions

• Black level, Contrast, Sharpness, Color temperature, Image position, Gamma, Auto source seek, OSD timeout, OSD position, OSD menu rotation, OSD transparency, Select input source, Volume control, Load factory defaults, On-board temperature sensor, Support for ambient light sensor

Audio

• Line out, stereo, no amplification.
• Supports Digital View audio add-on board with OSD volume control.

Power

• Connectors: Molex 43650-0200 compatible or Model 2-pin 0.156" pitch
• Requirements: +12/24VDC, ±5%, 4W (controller power only, not panel or backlight)
• Fuse: Non-resettable type.

Other

• PCB size: Size: 107.44mm(4.23") x 91.57mm(3.61")
• Mounting: 5 grounded mounting holes
• Controller power: +12V/+24VDC ±5%
• Controller power consumption: TBD (controller logic only, no panel or backlight driver)
• Standby power consumption: TBD
• Status indicators on board: Dual color LED
• Plug & Play: DDC 1.2/b compatible
• Latency: 12ms measured on HDMI with 1920x1080 panel

Customization

(options*)

• Panel timing
• Video input timing support
• Custom EDID
• Splash screen logo, ie during start-up
• Custom hotkeys , menus, commands
• Build options to omit connectors
• Full PCBA relayout, conformal coatings & other hardware changes
• Software utilities or Apps (IOS or Android) for RS-232 control

Reliability

• MTBF in excess of 200,000 hours @ 25⁰C (calculated using Telcordia SR-332 procedure)
• Warranty 3 years