341. Basic operations1-5. DSK (downstream key)Characters or other images can be combined with thebackground image.1-5-1. Selecting the DSK type1 Press the d button to light its indicator, and display theDSK menu.2 Use [F1] to display the DSK sub menu.3 Use [F2] to select the Type item.Lum(luminance key/self key)This is for creating the key signals fromthe luminance component of the key fillsignal.Linear(linear key/EXT key)This is for creating the key signals fromthe luminance component of the keysource signal.It is used when the key source signal andkey fill signal are different.Since the luminance key is operated as a self key, thekey fill signals are used as the key source signals.When the luminance key has been selected as thedownstream key type, the key signals will remainunchanged even when the key source signals areswitched.When using the linear key, use material with a blackbackground and white characters or shape to becombined by the key as the key source signal.Material which is not black and white may not becombined clearly.Material with a white background and black characters,etc. can be reversed using the key invert function foruse.4 When the luminance key has been selected, thechroma components can be contained in the key signalsgenerated in view of the fact that it is used as a self key.(This is not applied to the linear key.)Use [F3] to select the setting using the Lum Key item.Chroma On In addition to the luminance components,the chroma components are also factored inwhen generating the key signals.Use this setting if colors with low luminancecomponents are used for the key signals(when, for instance, blue characters are to beremoved).Chroma Off The key signals are generated only from theluminance components.5 Use [F4] to select the fill type using the Fill item.Bus The bus signal is used for the key fill signal.Matte The internal fill matte is used for the key fillsignal.Setting the fill matte color1 On the DSK menu, use [F1] to display the Fill Matte submenu.2 Use [F2], [F3] and [F4] to adjust the Hue, Sat and Lumof the fill matte.w To call the preset colorUse [F5] to select the preset color using the Load item,and press the [F5]. When [F5] is pressed, what has been set so far iscanceled and replaced with the preset color values. To save the values that were set before calling the presetcolor, refer to “1-10. Memory”.