Sierra Video Yosemite - Manual (Page 50)

SIERRA VIDEO
44
Video Plus Audio Frame Combinations
Multiple video frames are frequently combined to form “multi-level” systems. The Yosemite Family can
accommodate up to 8 separate control levels. At each of these levels there can be more than one
channel of physical routing switchers. Frequently, component video (YC, RGB, etc.) will share the same
control level. The same may be true of multiple analog audio channels.
When multiple frames, audio and/or video, are combined into the same control system, all of the frames
must be installed so that the high-speed control interconnect system is limited in length. The total length
should not exceed 25 feet (7.6m).
Multiple Yosemite Levels Under One Processor
When a video frame (V or D) is combined with an audio frame (A or AA), a “VA” or “VAA” system is
created. In these situations, we test the entire system as a unit at our factory. The entire system will only
use one 505150 control processor module. The “master” frame is whichever frame contains the 505150-
control. Sync, Host, Terminal and RS-485 connections are only made to the “master” frame. These
connectors on the other frames should have no connection made to them.
On the rear of each frame is a 25 pin D connector labeled J1. This connector is used to tie all frames in
the system connector.
When only two frames are combined, this cable will consist of a cable that is 1 meter long with a 25 pin
male connector on each end. When three or more frames are combined, a ribbon cable with crimped 25
pin D connectors is used to tie the frame-to-frame J1 connectors.