Cobalt Networks 9084 manual Minimum Latency Frames Control, Video Delay Display

Operating Instructions			9084 Function Submenu List and Descriptions
Table 3-2		9084 Function Submenu List — continued
			(continued)
	• Minimum Latency Frames Control		When Framesync is enabled, specifies the smallest amount of latency
			allowed by the frame sync (latency measurement in output video frames).
			The frame sync will not output a frame unless the specified number of
			frames are captured in the buffer. The operational latency of the frame
			sync is always between the specified minimum latency and
			minimum latency plus one frame (not one field).
			(Maximum range is 0 to 13.)
			Note: Due to card memory limits, the maximum available Minimum
			Latency Frames is related to the output video format selected.
			For example, with a 1080i59.94 output, the maximum allowed
			setting is 5. For a 1080i film (23.98) output, the maximum allowed
			setting is 3. Conversely, greater maximum settings are allowed for
			SD formats such as 525i59.94, where the practical maximum limit
			is 13.
			When using this control, be sure to check the Framesync Status
			display as follows:
			• Latency frames selection within limits.
			• Latency frames selection exceeds limits.
	•	Video Delay Display	Displays the current input-to-output video delay (in msec units) as well as
			in terms of Frames/fractional frame (in number of lines).
	• Framesync Status Display		Displays the current framesync status as follows:
			• Framesync status OK.
			• Framesync Enable set to Off.
			• Improper or missing framesync reference.
			• Latency frames selection exceeds limits.
			Note: See Minimum Latency Frames Control (p. 3-23) for more
			information about this message.
	• Loss of Input Signal Selection		In the event of input video Loss of Signal (LOS), determines action to be
			taken as follows:
			• Disable Outputs: Disable all outputs.
			• Freeze Last Frame: Freeze image to last good frame (last frame
			having valid SAV and EAV codes).
			• Freeze to Color: Freeze image to a color raster (as selected using
			Framesync LOS Freeze Color control).
			Note: If this card is used to also pass embedded audio, note that
			audio noise will occur upon loss of input with “Freeze Last
			Frame” selected.

9084-OM (V4.0) 9084 PRODUCT MANUAL 3-23