Nvidia 2 User Manual

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Normally, the software automatically detects the signal type that is being 
used. If  necessary, you can force the software to detect the signal type as 
follows: 
Click Detect to force detection of  the signal type.
The software tests each signal type and stops when it detects a match.
If  the signal type cannot be detected, click the Video Mode  list box 
arrow and then click the item corresponding to the signal source.
Click Composite, Auto if  you want the frame lock board to classify 
the signal as bi-level or tri-level.
Understanding the Status Indicators
The G-Sync Devices section displays the status of  the sync signals as 
well as the status of  the RJ45 ports. The two ports are represented by 
connector icons.
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N VID IA  Q ua dr o G -Sy n c  II Po rts
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NVIDIA Frame Synchronization Under Linux