KT809 Industrial Signal Converter — Multi-Function CGA/EGA/RGB to VGA Converter
Keywords: KT809, Industrial Signal Converter, CGA/EGA Converter, RGB to VGA, Industrial Video Signal, Signal Isolation
Product Overview
The KT809 is a full-featured industrial-grade video signal converter developed by Kongto Technology. Supporting multiple legacy TTL signal inputs including CGA, EGA, and RGB, it converts them to standard VGA output through built-in high-performance signal processing circuits. An optional signal isolation module effectively eliminates ground loop interference, making it ideal for complex industrial environments.
Technical Specifications
| Parameter | Value |
|---|---|
| Input Signal | CGA (4-color/TTL 5V), EGA (16-color/TTL 5V), RGB (analog 0.7Vpp) |
| Output Signal | VGA (DE-15, standard VGA timing) |
| Output Resolution | 640x480 / 800x600 / 1024x768 @ 60Hz |
| Signal Isolation | Optional optocoupler isolation module (KT809-I), eliminates ground loop interference |
| Power Input | DC 12V ±20% |
| Power Consumption | ≤ 2W |
| Operating Temp. | -20°C ~ +70°C |
| Protection | Metal housing, anti-interference shielding design |
| Interface Type | Input: DB15; Output: DE-15 |
| Dimensions | Approx. 110mm x 75mm x 28mm |
| Certifications | CE, RoHS |
Advantages of the Isolated Version (KT809-I)
KT809 is available in two versions: Standard and Isolated (KT809-I). The isolated version features a built-in high-speed optocoupler isolator, which is particularly important in the following scenarios:
- Shared Ground Issues: When the converter connects two devices (signal source and monitor) with significant ground potential difference, isolation prevents ground loop current from damaging device interfaces.
- Factory Power Grid Fluctuation Environments: Voltage fluctuations caused by the start/stop of large motors, welding machines, etc. in industrial power grids — the isolation module absorbs transient surges effectively.
- Long-Distance Signal Transmission: When the monitor is far from the signal source (more than 5 meters), isolation design reduces signal attenuation and noise coupling.
- Near Sensitive Equipment: Isolation design reduces the impact of electromagnetic radiation on converted signals.
Typical Applications
- Legacy CNC Machine Display Upgrade: Compatible with CGA/EGA interfaces from various brands of legacy CNC systems, converting analog signals to VGA and connecting to modern industrial LCD displays.
- Industrial Vision Inspection Systems: Convert non-standard industrial camera output to VGA, integrating into a unified display platform and reducing system integration costs.
- PLC HMI Interface Expansion: Extend VGA interfaces for PLCs that only support legacy display output, compatible with modern HMI touchscreens or industrial monitors.
- Equipment Retrofitting and Second-Hand Market: In second-hand equipment transactions, the buyer's monitor interface may not match the equipment. KT809 provides a plug-and-play compatibility solution.
Comparison with Similar Products
| Feature | KT809 (Kongto Tech) | Competitor A (domestic) | Competitor B (imported) |
|---|---|---|---|
| Signal Isolation | Supported (KT809-I) | Not supported | Supported (30% higher price) |
| Operating Temp. | -20C~+70C | 0C~+50C | -10C~+60C |
| Input Formats | CGA/EGA/RGB 3 types | CGA/VGA 2 types only | CGA/EGA/RGB 3 types |
| MTBF | ≥100,000 hours | ~50,000 hours | ~80,000 hours |
| Tech Support | Factory direct | Limited support | Agent support |
Purchase & Inquiries
KT809 Industrial Signal Converters (Standard and Isolated versions) are available from stock. Please contact Kongto Technology for detailed specifications and bulk pricing.
Email：szkongto01@foxmail.com Website：https://cncdisplay.com Phone：+86-136-8688-9647