NEC WT615 - Manual (Page 101)

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Selecting Signal Type [Signal Type]
Select either the computer signal type or the component signal type.
RGB ....................... Computer signal
Component ............ Component signals such as Y/Cb/Cr, Y/Pb/Pr
NOTE: This feature is available on the computer signal only. If you do not get a better picture even when you set "Signal Select" to
"Component" in [Setup], set this to "Component".
Selecting Video Filter Level [Video Filter]
This function reduces video noise.
Off ......................... The filter is removed.
Less ...................... The low-pass filter is applied partially.
More ...................... The low-pass filter is applied fully.
6. Using On-Screen Menu