Extron electronic SGS 408 manual Using the Black button, Applying a cut, Applying other effects

Operation, cont’d

Using the Black button

Each set of inputs (program or preview set) includes a Black button. Pressing the Black button displays a black screen instead of an image (figure 3-30). The input button which is currently selected will flash. The black screen can be cut or transitioned to another image, in the same way as any other image. Pressing the Black button a second time will deactivate the black screen and restore the current input. A black image cannot be frozen.

	B l a c k						T i t l e
4 X X X . X X K H z			X X . X X H z				W i n d o w
1 2 8 0 X 1 0 2 4 @			6 0 H z
Tr u e ( D V I ) o n l y						3 . 4 S e c o n d s
M e n u		C e n t e r		S i z e	F i l t e r		L e v e l

Figure 3-30 — LCD after black button has been pressed

Applying a cut

A cut seamlessly replaces the program image with the preview image. No effect is applied to the switch. As soon as the Cut button is pressed, the switch occurs.

To switch using a cut, do the following:

1.Press the preview input button that corresponds to the input that you want to switch to.

2.Press the Cut button. The seamless switch takes effect immediately, and the preview image becomes the current program image. The previous program image will now become the current preview image.

Applying other effects

When an ECP 1000 is connected, all effect buttons except the Cut button are disabled. All effect switching must be done through the ECP 1000.

Available effects

An effect determines what is seen when the switch is made. A transition determines how the effect occurs: the direction in which the effect moves and the duration during which the effect takes place.

The SGS 408 provides a wide variety of effects:

•A dissolve causes the program image to fade out while the preview image fades in (figure 3-31).

Dissolve

Figure 3-31 — A dissolve effect

3-16 SGS 408 Switcher • Operation