GRASS VALLEY GV MATRIX, User Manual

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87
GV Matrix
User Manual
Asynchronous Video
Sometimes video arriving at the GV Matrix through the XIO-4901 inputs will not be
synchronous with the local reference source. Dealing with asynchronous video in a
switching/routing environment requires special consideration.
GV Matrix input behavior for asynchronous video
• SDI inputs: The user must manually identify asynchronous SDI inputs to the XIO-4901
as asynchronous in the XIO-4901 Input Config panel.
See Asynchronous Input Signals on page 72 for a fuller description and procedure.
Asynchronous
IN checkbox
Behavior
Checked The signal is considered ASYNC. The incoming SDI can be at a
different frame rate than reference, or can be a wild feed.
Unchecked The signal is considered SYNC. The incoming SDI must be
genlocked and timed within NTW.
GV Matrix output behavior for asynchronous video
• SDI Outputs: Clean switching at the XIO-4901 output depends on the status of the
signals arriving from the fabric module.
Signal status Behavior
SYNC The deglitcher in the XIO output is active. Switches between
synchronous sources will be clean.
ASYNC The deglitcher in the XIO output is disabled. Switches will not be
clean.