Tektronix Camcorder 2200 Manuel D’Utilisation

3-19

With 

 selected as the dominant field, if a change takes 

place just prior to Field 1, the change will become effective at the 
beginning of Field 1. But if the change takes place prior to Field 2, 
the change will be delayed by one field so that it also becomes 
effective at the beginning of the next Field 1. This way, all changes 
will be synchronized to take place at the beginning of Field 1.

Similarly, if 

were selected as the dominant field, those 

changes that take place prior to Field 1 would be delayed until 
Field 2.

If you are recording the switcher output on video tape and will be 
doing post-production editing of the tape, it is recommended that 
you set Field Dominance for a specific field (either 

 or 

), and leave it at that setting. This will ensure that all 

changes will take effect consistently on the same field.

If an Editor or a GPI trigger initiates one of these functions, it will 
produce the same effect as a control panel change. That is, the 
initiation of any of these functions will be delayed until the 
beginning of the selected dominant field.

3.

Set the matte generator chroma limiting algorithm by 
toggling through the available choices. The 

selections are: 

 — Prevents the total signal (luminance and 

chrominance) from exceeding the NTSC transmission 
standard.

— Limits colors to those which generate red, 

green, and blue values within the 0 to 100% range.

 — Selects a valid RGB color limiter which also prevents 

the encoded signal envelope from exceeding NTSC 
transmission level. This is the system default mode.

 — Turns off all algorithm methods for matte generator 

limiting.

4.

Press 

to open the Set Clock menu to set the 

system time and date. 

Press 

 to return to the Configuration menu.