Vertical Shift Of The Caption Line Data; Figure 3-6: Connections To Copy Xds Data Between Video Feeds; Figure 3-7: Reinserting Xds After Video Processing - evertz 8083XDS-AD Instruction Manual

8083XDS-AD Analog and SD-SDI XDS Encoder
The VBI Bridge setup will introduce a delay in the data on the receiver side,
typically one to three frames. Other equipment in the SDI video stream also
influences the length of this delay.
Page 3-16
SDI In with
upstream captions
SDI In

Figure 3-6: Connections to Copy XDS data between Video Feeds

Figure 3-7 shows a typical application for the VBI bridge
functionality:
8083XDS-AD
SDI In with
upstream captions
"CC Xmit"
Port B

Figure 3-7: Reinserting XDS after Video Processing

3.3.4

Vertical Shift of the Caption Line Data

It is common for 4:2:2 component to NTSC video encoders to add setup to
line 21 regardless of whether there is closed caption information on line 21
or not. Closed caption data generated at 0 IRE on component video will be
translated to 7.5 IRE when setup is added by the video encoder.
Revision 1.0.2
XDS Computer
Port A or C
8083XDS-AD
SDI out w/ XDS
"CC Xmit"
Port B
Port B
8083XDS-AD
SDI out w/ XDS
"CC Recv"
Standards
8083XDS-AD
Converter
"CC Recv"
Port B
XDS Data
Data and CC
Data and CC
SDI out with
captions
OPERATION