Tektronix 2200 Manual Do Utilizador

3-23

There are two slots for Chroma Keyer options, one for M/E 1 and the other 
for M/E 2. Each module and its mezzanine can create two chroma keys and 
key fills (one for each keyer in the M/E) from any primary input or chroma 
key input. The chroma key and key fill are sent to the Keyer Module where 
they are selected and handled the same as a luminance key. 

The Chroma Keyer: 

■

Creates a chroma key and shaped fill for Key 1 of the M/E from any 
primary or chroma key video input 

■

Does all of the timing and control for the Chroma Keyer Mezzanine 

The input signals are serial digital. Signals are converted to parallel on the 
carrier module and sent either to the chroma key circuit (Key 1) or the 
mezzanine module (Key 2). 

The input signals for each Key Carrier Module are: 

■

Any of the primary inputs (key and/or fill) 

■

And/or either of the chroma key inputs (key only) 

Each of the Chroma Keyer Modules creates: 

■

Chroma key 

■

Video shaped by the chroma key 

The Chroma Keyer outputs are sent to the Keyer Carrier Module and the 
Keyer Mezzanine Module. The chroma key uses the linear key on the keyer 
modules.