How to make vga

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johhh

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Hello
How to make vga vertical and horizontal and red green blue is analog or digital
 

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In a VGA (Video Graphics Array) connection, the vertical and horizontal sync signals are digital, while the red, green, and blue color signals are analog.
Here’s a breakdown:
  1. Horizontal Sync (HSYNC) and Vertical Sync (VSYNC): These are digital signals. They tell the display when to start a new line or a new frame. HSYNC signals the start of each line, while VSYNC signals the start of a new frame. Each signal is typically a square wave pulse at a specific timing.
  2. Red, Green, and Blue (RGB) Color Signals: These are analog signals in VGA. Each color channel (Red, Green, and Blue) has its own wire carrying a voltage level. The intensity of each color is controlled by the voltage on each line, which can vary between 0V and a maximum (typically 0.7V). Higher voltage indicates a brighter color. By combining these voltages, a wide range of colors can be displayed.
  3. Other Signals: VGA cables also have some extra pins for things like ground and, sometimes, digital data for identifying the monitor's capabilities.
So in summary:
  • HSYNC and VSYNC: Digital signals.
  • Red, Green, and Blue (RGB): Analog signals.
FYI RGB signals are loaded to 75 Ohms
 

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johhh said:
hello

If i use red wire as 0.7 v it will red and 1.4v it will red more
Click to expand...
Yes color brightness will increase and 1.4V is the peak no load voltage from post sync clamp with no 75 Ohm load but that means your TV is uncalibrated.

Find some test patterns on the web. I use DPT.exe and run on HDMI or VGA port both the same on 1080p.
 

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