Ensemble Designs 7555 HD / SD Video Processing Frame Synchronizer - Manual (Page 28)

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7555 HD/SD, 9550 3G/HD/SD, and 9550-XA 3G/HD/SD Video Processing Frame Synchronizers
Timing Menu
Configuring the Frame Synchronizer
A Frame Synchronizer is used to synchronize the timing of a video signal to coincide with a timing
reference, such as a color black signal that is distributed throughout a facility. The synchronizer
accomplishes this by writing the incoming video into a frame memory buffer under the timing
direction of the sync information contained in the reference video. Simultaneously, the synchronizer’s
timing system reads back the memory that is genlocked to a house reference.
As a result, the timing or alignment of the video frame can be adjusted so that the scan of the upper
left corner of the image is happening simultaneously on all sources. This is a requirement for both
analog and digital systems in order to perform video effects or switch glitch-free in a router.
Use the Timing Menu shown on the next page to adjust the following parameters:
• Frame Sync – Turn the Frame Sync function on or off.
• Frame Delay – For asynchronous inputs, set the amount of frame delay desired up to one
second.
The Vertical and Horizontal Timing controls adjust the timing of the video signal relative to the timing
reference. Setting the Vertical and Horizontal parameters to 0 (the default setting) will “zero” time the
video signal to the reference. Negative values will cause the video signal to be early with respect to the
reference. Positive values will make the video signal later in time with respect to the reference.
• Vertical Timing – When the Frame Sync is on, adjust the vertical timing of the output signal to
place the leading edge of sync to coincide with other sources.
• Horizontal Timing – When the Frame Sync is on, adjust the horizontal timing of the output
signal to place the leading edge of sync to coincide with other sources.