Video Graphics Array（VGA）

VGA Interface Specifications

Signal Type:
Analog RGB (Red, Green, Blue) + Horizontal Sync (H-Sync) + Vertical Sync (V-Sync)

Supported Resolutions:

• Compatible with mainstream resolutions
• Max. Support: 1920×1080@60Hz (Full HD)
• Common Resolutions:
  640×480, 800×600, 1024×768, 1280×1024, 1366×768, etc.

Color Depth:
High-color display (Up to 24-bit True Color / 16.77 million colors)

Connector Type:

• Trapezoidal shape (fool-proof design)
• 15 pins in 3 rows (5 pins per row)

Cable Interface:
Standard VGA cable (male connector) with screw-lock/card-lock mechanism

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Pin Definition

Pin	Signal Name	Function Description
1	RED	Red video signal
2	GREEN	Green video signal
3	BLUE	Blue video signal
4	N/C / ID2	Not Connected / Monitor ID bit 2 (Optional)
5	GND	Ground (Self-test)
6	RGND	Red ground
7	GGND	Green ground
8	BGND	Blue ground
9	N/C / +5V	Not Connected / +5V (Optional power)
10	SGND	Sync signal ground
11	ID0 / RES	Monitor ID bit 0 / Reserved (Optional)
12	ID1 / SDA	Monitor ID bit 1 / DDC Data (Optional)
13	HSYNC	Horizontal sync signal
14	VSYNC	Vertical sync signal
15	ID3 / SCL	Monitor ID bit 3 / DDC Clock (Optional)

N/C = Not Connected | DDC (Display Data Channel) optional for Plug-and-Play monitor identification

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Important Notes

Non Hot-Swappable Interface

• Power off SP5040 and display device before connecting/disconnecting VGA cables.
• Hot-plugging may cause current surges, risking interface damage or image abnormalities.

Image Quality

• VGA transmits analog signals, quality affected by:
  • Cable quality & shielding
  • Cable length (recommended ≤15m)
  • Electromagnetic interference (EMI)
• Symptoms of excessive length: signal attenuation, blurring, ghosting, color shift.

Resolution & Refresh Rate

• Supported modes depend on:
  • SP5040 output settings (OS/BIOS)
  • Monitor's maximum capability
• "Out of Range" or black screen solutions:
  1. Boot into Safe Mode
  2. Use lower resolution/refresh rate
  3. Check legacy monitor limitations (1080p may not be supported)

Maintenance

• Clean connectors with compressed air or lint-free cloth if experiencing:
  • Flickering display
  • Intermittent signal
• Always power off devices before cleaning.