The Evertz 7700G4X is a specialized multi-frame synchronization and genlock option card designed for the Evertz 7700 series modular video processing platform. Its primary function is to provide a common, stable timing reference across multiple 7700 series chassis, allowing them to operate as a single, synchronized system. In large broadcast and production facilities, it is common to distribute signal processing across several equipment frames. This card ensures that all video and audio processing within those frames occurs on a unified timebase, which is absolutely critical for preventing glitches, maintaining lip-sync, and ensuring clean switching between signals that may be processed in different locations. It acts as the central timing "conductor" for a distributed processing system.

Engineered for mission-critical reliability, the card typically accepts multiple reference inputs—such as analog black burst, HD tri-level sync, or an external 10 MHz signal—and distributes a conditioned, re-clocked version of this reference to all the cards within its local frame. Its "multi-frame" capability extends this synchronization to other connected 7700 series frames via dedicated cabling, ensuring every piece of equipment in the signal chain is locked to the same master clock. This precise timing is foundational for complex operations like large router control across frames, multi-viewer systems, and integrated production environments where signal paths are extensive and fragmented.

As a high-availability component, the 7700G4X is designed with features that support 24/7 broadcast operation. It is a key enabler for scalable system design, allowing broadcasters to expand their Evertz infrastructure with additional frames while maintaining the deterministic timing required for flawless on-air presentation. By guaranteeing system-wide synchronization, it provides the technical stability upon which reliable, professional video production depends.