UDS-CQ Card Module
The UDS CQ module is a special function SDI output module that installs in either the UDS-64 or UDS-144 series routers. It has 12 standard SD/HD/3G outputs, 3 special purpose Clean/Quiet outputs, and one output that is used as a reference to the module. The 3 clean/quiet outputs perform special processing on the video signal when they detect
a switch in the crosspoint core of the router. The switch is detected by means of CRC errors in the video signal, which are induced when a router switch occurs. When a switch is detected, the output will-
• Hold the current video frame.
• Fade the embedded audio signals within it down to a mute level over a 1024 sample period.
• Wait until the next video frame is acquired.
• Begin outputting that new video signal.
• Fade the audio signals up to unity gain.
The module must buffer a full frame of video to allow for this processing, so these three outputs have an inherent 1 frame of delay built in to them.
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