8-Lane eDP · 4K@120Hz | 2K@240Hz High Refresh Rate | Flicker Adjustment
Developed for production testing of eDP panels (monitor and notebook screens) and T-CON boards. I2C-based Flicker (VCOM) adjustment supported; standard split-type RMT-20 control box; output interfaces feature quadruple protection (over-voltage / over-current / under-voltage / no-load); the whole test requires only 3 buttons.
A professional eDP LCM pattern test instrument — high-refresh output, complete protection, easy operation
DP 1.2 standard, 1 / 2 / 4 / 8 lanes selectable, up to 5.4Gbps; supports 3840×2160@120Hz, 2560×1440@240Hz, 1920×1080@240Hz high refresh rates.
I2C-based VCOM voltage adjustment; the control box offers +5 / -5 / +1 / -1 four-key fine-tuning, and the OK key writes the value to the panel T-CON board memory in one step.
All output signals have protection circuits; panel power and backlight power feature configurable over-voltage, under-voltage, over-current and no-load protection, preventing damage to the instrument and the panel under test.
The standard RMT-20 external control box sits separately from the main unit for flexible line placement; frequently used keys are mechanical keys rated for millions of presses.
54+ built-in common test patterns, unlimited external images via SD card; up to 32 patterns per module parameter set, with auto-play and per-image duration settings.
Ready instantly at power-on — no boot wait. 99 preset module parameter sets; switching lines or panels means just switching a parameter number. The RS-232 port supports fixture travel switches — press down to turn on the signal, lift to turn it off.
Detailed electrical and functional parameters for all kinds of production-line eDP pattern testing
| eDP Signal | DP1.2 1 / 2 / 4 / 8 Lane BANK 1 / 2 groups 1.62 / 2.7 / 5.4Gbps Up to 4096×2160@120Hz, 2560×1440@240Hz |
|---|---|
| Flicker Adjustment | I2C-based VCOM voltage adjustment (customer provides the I2C protocol for VCOM adjustment); the VCOM value can be written to the panel’s non-volatile memory |
| Power Signals | T-CON power VCC: 3.3V–13.5V output; max current 2.5A with current measurement (5mA accuracy); configurable over-voltage / under-voltage / over-current / no-load protection |
| Backlight Signals | BL_VCC (backlight power), BL_ADJ (backlight adjustment), BL_ONOFF (backlight on/off); 3.3V–12V / max 2.5A, also with current measurement and quadruple protection |
| Power Sequencing | Controlled items: VCC, BLVCC, eDP signals, control outputs; interval 5mS–500mS, accuracy 5mS |
| Storage | SD card (FAT32, max 32GB, 16GB included) stores module parameter files and test images; up to 99 module parameter sets, 32 test patterns each |
| Unit Specifications | Dimensions 300 × 215 × 47 mm; weight approx. 3.6 kg (with packaging); power AC 220V (200–240V) 50/60Hz; operating temperature 0°C to +40°C |
| Operation | Split-type RMT-20 control box (standard, connected via DB15 cable); testing requires just 3 buttons — signal on/off, previous, next; plus VCOM adjustment and auto-play keys |
| Standard Accessories | RMT-20 control box, 16GB SD card, national-standard 3-wire power cord, eDP adapter board, 51PIN coaxial cable (20cm) |
Main unit front panel, rear panel and RMT-20 control box layout at a glance
Connects to the main unit via DB15 cable, with its own display and parameter menu. The "⏻" key controls the signal, "◀" "▶" keys switch test patterns, with an additional auto-play toggle; VCOM +5 / -5 / +1 / -1 keys fine-tune flicker, and the OK key saves. Frequently used keys are mechanical keys rated for millions of presses — built to last.
Complete pattern testing in a few simple steps
Covering grayscale, color bar, checkerboard, flicker, crosstalk and other common production-line test screens
Including Flicker adjustment patterns, ready at power-on
Just place them in the SD card "BMP" folder
Combine test screens as needed
Per-image duration set independently, 0.5S–20S
Grayscale background + vertical scrolling bar
A full comparison of pattern-testing solutions for eDP LCM production lines — professional instruments win across the board
| Item | 219-ED Professional Signal Generator | Ordinary Motherboard |
|---|---|---|
| Versatility | ✓Purpose-built for LCM and T-CON production-line pattern testing, compatible with all eDP panels | ✗One motherboard only drives its matching panel — changing glass means changing the board |
| Reliability | ✓All interface signals have protection circuits; T-CON power features over-voltage, under-voltage, over-current and no-load protection | ✗No protection — easily damaged |
| Efficiency | ✓Instant on at power-up, highly efficient | ✗Must wait for the motherboard to fully boot; some boot very slowly |
| Operability | ✓Signal on/off and pattern switching with just 3 buttons | ✗Must switch to the USB channel via remote or buttons first, then control USB image playback |
| Cost-Effectiveness | ✓Designed service life of 5–10 years — better long-term value | ✗Frequent damage or even scrapping — higher overall cost |
| Special Requirements | ✓Independently developed — customization available for special panel-inspection processes | ✗Cannot be met |
| Industry Trend | ✓Major brand LCM manufacturers all use professional instruments for pattern testing | — |
| Success Stories | ✓Skyworth, Changhong, Innolux, AUO, Panda, BOE, TCL CSOT | — |
The Common Choice of Many Leading LCM Manufacturers
Quick ways to locate pattern-testing issues
The 219-ED is discontinued; the replacement is SVG-2401. Existing users needing manuals, spare parts or technical support are welcome to contact us anytime.
A high-tech enterprise dedicated to R&D and production of test equipment and system products — a professional test equipment provider and service partner for electronics manufacturers.
