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// Video Connectors

Genlock / Tri-Level Sync BNC

Genlock and Tri-Level Sync signals synchronize multiple video devices to the same reference clock via BNC connectors. Tri-level sync (bipolar) is used for HD equipment; bi-level (black burst) for SD.

// Specifications
Standard
SMPTE 274M (tri-level) / SMPTE 318M (bi-level)
Connector
BNC 75 ohm
Signal
Tri-level: 600mVpp bipolar / Bi-level: 300mVpp
Use Case
Broadcast sync generators, camera lock, switchers
Termination
75 ohm when used as reference input
// Pin Reference Table
Pin Name Function Type
1 Center Pin Sync reference signal I/O
2 Outer Shell Ground / 75 ohm reference GND