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RGB Sync-on-Green (SoG)

Sync-on-Green (SoG) RGB video carries the horizontal and vertical sync signals embedded in the green channel, using three BNC connectors (or component-style RCA). Common on workstation monitors and some industrial displays.

// connector diagram 3 pins
// loading diagram...
// Specifications
Standard
SMPTE 170M / workstation
Connectors
3 x BNC or RCA (R, G with sync, B)
Signal
R: 0.7Vpp, G+sync: 1Vpp, B: 0.7Vpp
Sync
Embedded in green channel
Use Case
SGI workstations, medical displays, some projectors
Adapter
BNC to VGA requires SoG separator circuit
// Pin Reference Table
PinNameFunctionType
R Red BNC Red video signal 0.7Vpp 75 ohm ADC
G Green BNC Green video with sync embedded 1Vpp 75 ohm ADC
B Blue BNC Blue video signal 0.7Vpp 75 ohm ADC

Sync-on-Green (SoG) RGB video carries the horizontal and vertical sync signals embedded in the green channel, using three BNC connectors (or component-style RCA). Common on workstation monitors and some industrial displays.