Tektronix Camcorder 2200 Manuale Utente

2-16

The

 function is available in each M/E.

 affects only the effect where it is selected and not the entire 

switcher. The button lights when pressed and turns off 
automatically when the second transition is complete. The

 

video input button on the A Bus remains lit while the M/E is on 
the black limit. The preview monitor continues to show the final 
result of the two-stage preset black transition.

 and

 are unaffected when

 is turned on.

 and

 can be changed at any time during a preset black 

operation.

Preset Black always fades to a full screen black regardless of 
whether the switcher is operating in layered mode or standard 
mode.

An abort of Preset Black occurs when the operator selects a 
crosspoint on the A Background bus while the M/E transition is 
on the black limit. This abort causes the following to occur: the 
preset black transition is cancelled, the 

button 

lamp turns off, all keys are dropped, and the selected crosspoint is 
taken fully on-air. If the abort occurs in Layered Mode, the M/E is 
forced to Standard Mode to ensure that the selected crosspoint is 
a full raster image.

A new background source may be selected on the B Background 
bus when you are at the midpoint of a preset black mix. In the 
same manner, next-transition delegation buttons, keyer modes, or 
keyer sources may also be changed. None of these changes will 
abort the preset black transition.