Merging DUA II Specifications download pdf (Page 38)

34 • Workstation Setup & Administration Guide

Chapter 3 • System Overview

House Sync

Whenever you use more than one video device, you must have video

synchronization. If the devices are not in sync, a monitor will show rolling,

tearing, or incorrect colors in the picture whenever you transfer the video

between devices.

A sync generator or house sync provides the synchronizing composite signal

to all other devices (video and audio) that must lock to the main video

program. This analog composite reference video signal, called “color black” or

“black-burst” video, is a timing pulse that is added to a composite video signal

and contains horizontal, vertical, and color synchronizing information.

Tri-level Sync In the case of HD video devices, you need a tri-level sync. Tri-level sync could

be considered synonymous to black-burst in that it is simply the reference

synchronizing information from the facility's master generator.

Each HD format needs a specific tri-level sync. You must use the proper tri-

level sync to synchronize your VTR and the Equinox video subsystem for all

the HD formats supported by Avid|DS.

These are the HD formats currently supported by Avid|DS and their relevant

frame rates.

You should read the documentation that ships with your video

subsystem to make sure the configuration you are using is properly

synced.

HD format Supported frame rates (fps)

1080i Interlaced 30.00 fps, 29.97 fps, 25.00 fps

1080Psf Progressive 30.00 fps, 29.97 fps, 25.00 fps, 24.00 fps, 23.976 fps

720 Progressive 59.94 fps, 60 fps

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Merging DUA II Specifications Page 38