HLT-1920 LCD Controller


Harsh Environment

LCD controller board for monitors in harsher environments

•  Inputs: HDMI, DisplayPort, ARGB (VGA)
•  LCD support: Up to 1920x1200, 8-Bit
•  Panel connectivity: LVDS
•  RS-232 function control
•  Conformal coating
•  Operating temperature -40°C to +80°C1

•  Part number: 4176401xx-3

HLT-1920 LCD Controller

The HLT-1920 LCD controller is the harsher environment version of the ALT-1920. It combines three of the most popular video input formats, HDMI, Analog RGB (VGA) and DisplayPort in a compact general purpose solution for LCD panels up to 1920x1200 resolution. 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 uses ceramic capacitors to improve reliability and lifetime at elevated temperatures.

Specifications: HLT-1920

Panel Connectivity Panel connection: LVDS (2 channel)
Panel resolutions: Up to 1920x1200, includes all standard resolutions as well as custom resolutions
Colors: Up to 8-bit per color
Panel power: 3.3V, 5V, 12V, 18V
Backlight inverter/driver support: PWM, DPMS Enable pin (5V or 3.3V)
Scaling Image upscaling supported, ie lower resolution images will be scaled to fill the display
Input: HDMI 1.3 (x1) 60Hz up to 1920x1200
480p, 576p, 720p, 1080i, 1080p
Input: Displayport 1.2a (x1) 60Hz up to 1920x1200
Input: VGA (x1) 60Hz up to 1920x1200
With auto detect of Digital Separate Sync,
Sync-On-Green & Composite Sync.
Output: Audio Line out, stereo, no amplification.
Supports Digital View audio add-on board with OSD volume control.
Function Interface On Screen Display (OSD) menu
Functions can be called by buttons or IR remote control.
Functions are also accessible via a Serial port (RS-232)
Functions Black level, Contrast, Sharpness, Clock, Phase, Color temperature, Image position, Gamma, Auto picture setup, Auto RGB calibration, Auto source seek, OSD timeout, OSD position, OSD menu rotation, OSD transparency, Select input source, Volume control, Load factory defaults
Other Controller power: +12V/+24VDC ±5%
Controller power consumption: ~2.5w (controller logic only, no panel or backlight driver)
Standby power consumption: 1.3W~1.5W
Status indicators on board: Dual color LED
Plug & Play: DDC 1.2/b compatible
Latency: ~13ms measured on HDMI with 1920x1080 panel
Conformal coating: HumiSeal IB73, acrylic, spray application
Ceramic capcitors
Operating temperature -40°C to +80°C1
Reliability MTBF in excess of 200,000 hours @ 25oC (calculated using Telcordia SR-332 procedure)
Warranty 3 years
Volatility Statement of volatility (PDF download link)
Panel timing
Custom input timing
Splash screen logo, ie during start-up
Custom hotkeys , menus, commands
Custom EDID
Build options to omit connectors
Full PCBA relayout, conformal coatings & other hardware changes
Software utilities or Apps (IOS or Android) for RS-232 control

Note: 1 The Operating temperature is given for reference only, the controller should be tested and verified in the finished display product.


•  Brochure (PDF)
•  Manual (PDF)
•  Revision Note 2021 Aug (PDF)
•  2D Drawing (PDF)
•  2D Drawing (DWG)
•  3D Drawings IGS, SLDPRT, STEP (ZIP)

Application Notes
•  PWM backlight brightness adjustment (PDF)

Video Guides
•  Firmware update procedure (MP4)

Software Page
•  Software for RS-232 & Ethernet

Statements & Declarations
•  Statement of volatility
•  Compliance & declarations page

LCD Panel Connection Diagrams
•  Controller Solution Generator

Support: Call...

•  USA: +1.408.782.7773
•  UK: +44-(0)20-7631 2150
•  HK: +852-2861 3615

Email: Please use the form below to
direct your enquiry to the nearest office.


Both firmware and hardware customization options are available to meet specific project and application requirements. Use the form below to contact us.


For a full selection of LCD Controller accessories click here.

OSD Buttons

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accessory - 3G-SDI


accessory - osd buttons

Audio Board

accessory - audio amp

IR Remote

accessory - IR remote