Front Panel; Mode Switch - Korg Krossfour KF4 Manuel D'utilisation

Front Panel

1. FADER CURVE switch
This switch selects the fader curve. The curve determines how the fader affects the mixing of
the two channels. If the MODE switch is set to C-K or L-K, the fader only affects Channel B.
(Normal curve) : Sliding the fader causes a gradual, linear change in the mix between the
two channels. The center position corresponds to a 50:50 mix. This is a typical crossfade opera-
tion; movement in either direction attenuates one channel while amplifying the other.
(No mix) : Sliding toward the center attenuates both channels; sliding to either end ampli-
fies the corresponding channel. The two channels never mix.
(Center mix) : Channels are mixed only over the central span of the fader range,
(Switcher) : The fader acts like a toggle switch that selects either Channel A or Channel B.
There is no attenuation and no mixing.

2. MODE switch

Selects the background color or the overlay mode.
BK (Black): Sets the background color to black.
WH (White): Sets the background color to white.
C-K (Chroma key): The unit cuts out the blue parts of the (foreground) Channel B image, so that
the Channel A signal (background) shows through the cutouts.
L-K (Luminance key): The unit cuts out the black and white portions from the (foreground)
Channel B signal, so that the Channel A image (background) shows through the cutouts.
Note: For C-K and L-K modes, Channel A serves as the background and Channel B is the overlay. Note that when
3. FINE knob (C-K/L-K Level Adjustment)
This control is effective only in C-K and L-K modes. If the mode is set to C-K, this knob will
adjust the color of the area that will be "keyed-out" or removed from the foreground image
(Channel B). If the mode is set to L-K, this knob will adjust the brightness level (from white to
gray to black) of the area that will be "keyed-out" or removed from the foreground image
(Channel B).
4. INPUT 4 jack
This input accepts a composite video signal.
5. MONITOR OUT jack
The signal provided by this output is selected by using the MONITOR SELECT keys.
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signals are being mixed in these ways, the fader affects only the Channel B image.
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