🎛️🔀 VGA • VGA Splitter

VGA splitters allow a single VGA output to be sent to two or more displays. Passive splitters simply duplicate the signal, while powered splitters amplify and regenerate it for better quality and longer cable runs. Both are essential in legacy AV setups, classrooms, and diagnostic environments.
 
🔧 Splitter Variants
🔹 Passive VGA Splitter (Y-Cable)
Type: VGA Male → 2x VGA Female
Use: Duplicate VGA signal to two displays
Power: None required
Limitations:
Signal degradation over distance
Lower resolution support (~640x480 to 1024x768)
Best used with short cables and identical displays
Common Setup: Retro PC → CRT monitor + capture card
 
🖥️ Compatible Devices
💻 Desktop PCs and laptops with VGA output
📺 CRT monitors and legacy LCDs
📽️ Projectors with VGA input
🎮 Retro consoles with VGA mods
🧪 Capture cards and diagnostic tools
🧰 AV switchers and distribution panels
 
✅ Common Uses
🔄 Mirror one VGA source to multiple displays
🧩 Extend visibility in classrooms, conference rooms, or kiosks
🛠️ Duplicate output for simultaneous monitoring and capture
🎛️ Build multi-screen demo rigs or retro gaming setups
🧪 Test VGA signal across multiple endpoints
 
🧠 Signal Format Notes
Protocol: Analog RGBHV (Red, Green, Blue, Horizontal Sync, Vertical Sync)
Connector: DE-15 (standard 15-pin VGA)
Resolution Support:
Passive: Up to ~1024x768
Powered: Up to 1920x1080 or higher
No Audio: VGA carries video only
❗ VGA is sensitive to cable quality and length—especially in passive setups
 
⚠️ Things to Watch Out For
📉 Passive splitters may cause dim or unstable images
🧯 Don’t mix resolutions or refresh rates across displays
🧪 Test each output before permanent install
📏 Use high-quality shielded VGA cables for best results
 
🛠️ Quick Tips for Beginners
🔍 Identify VGA by its trapezoidal 15-pin connector
🧭 Use passive splitters for short, low-res setups; powered for pro-grade installs
🧪 Test with identical displays to avoid sync issues
🧼 Coil VGA cables gently—avoid pin damage