Tektronix 2200 Manual Do Utilizador

A-16

The concepts presented in this appendix are helpful when 
designing a video facility, interconnecting equipment, and 
configuring the equipment.

Keep the following points in mind when putting a system 
together:

■

When interconnecting devices, the video output of the 
sending device and the video input of the receiving device 
must both be set for the same video format—either shaped or 
unshaped.

If the sending device produces unshaped video but the 
receiving device expects shaped video, the overlapping video 
will whiten the edges of the key.

If the sending device produces shaped video but the receiving 
device expects unshaped video, a double-multiply will occur 
in the keyer, darkening the edges of the key.

■

If either device or the interconnect between them is analog, it 
is best to use unshaped video on the interconnect. If an 
additive keyer with noise coring exists in the receiving device, 
shaped video is acceptable; otherwise unshaped video must 
be used.

■

In an all-digital system, it is best to use shaped video between 
devices if it is supported by both devices.

■

When connecting to a Kaleidoscope DPM:

Kaleidoscope allows the user to program each digital input 
and each digital or analog output for shaped or unshaped 
video. There is no unshaper on the analog inputs of 
Kaleidoscope, so analog sources to Kaleidoscope must always 
be unshaped.