CDK-111A-Lite Owner's Guide - Ross Video

Menu 2: Key1 SetupTransparencyKey InvertFillBox MaskKey TypeKey Alpha ModeThe transparency value is applied to the key after the clip and gain values are set. Thedefault value of 0.0% will leave the key output on the PGM output unchanged. As thetransparency value is increased, the key output on the PGM will become increasinglytransparent.ON/OFF. Turning the key invert on will invert the portions of the program video thatcome from the background video, and the portions that come from the key video. (defaultsetting is OFF)The fill setting allows you to choose whether your key is filled with video or with aconstant matte color.Your available settings are:• VIDEO – Key will be filled with video. (default setting)• MATTE – Key will be filled with a constant matte color. The color is chosen in menu 5.ON/OFF. This setting allows you to turn on or off the box mask. The box mask can onlybe used when the keyer is set to use an external key (BNC 7 and 8). (default setting isOFF)Keys on the CDK-111A-Lite can be of two types, auto select keys or self keys.• Auto Select key – The shape of the key is determined by the luminance values in thealpha channel. (BNC 8 for an external key) (default setting)• Self key – The shape of the key is determined by the luminance values in the videoimage itself. (BNC 7 for an external key)You should choose an auto select key in almost all circumstances. Any device, whichprovides a separate alpha signal, will be used as an auto select key. Therefore, charactergenerators are used as auto select keys.The only time you would choose a self key would be if you were trying to key from asource that did not have a separate alpha channel such as a camera or VTR source.There are two types of linear luminance keys, Shaped, and Unshaped (default setting).Every key provided to the CDK-111A-Lite into BNC 7 and 8 will be one of these twotypes.You should ensure that the key type chosen inside the CDK-111A-Lite menu matches thekey type that you are providing to the card. If you are unsure of which key type to use youare best off picking unshaped.The major hint that you have the wrong key type selected is if the edges of your keyappear incorrect. In that case, return to the menu and select the other key type.Shaped keys use fixed clip and gain values and no transparency value. Therefore, userscannot change clip, gain, or transparency values while the system is set to use shapedkeys.Menu 3: Reserved For Future UseMenu 3: Reserved For Future Use3-12 • Operation CDK-111A-Lite • Owner’s Guide v4B