LC2000/LC2000-IQ/LC4000/LC4000-IQ
Channel Operation Menus
Issue 1 Rev 6
Page 87
© 2015 SAM
8.9.2 Multi-line WST
The unit can pass World System Teletext (WST) for SD and RDD-08 or SMPTE 2031 teletext
for HD. You can enable or disable teletext output and specify the input and output lines used.
Teletext covers World System Teletext (WST) subtitles, SMPTE RDD-08 and SMPTE 2031.
For WST and RDD-08, only subtitle information is supported or processed. SMPTE 2031
VANC packets may be teletext subtitles, non-subtitles, or inverted teletext.
WST is only supported in 625 input or output encoded signals. RDD-08 is only supported in
50 Hz HD video standards as a VANC packet with a Subtitling Distribution Packet (SDP)
payload. Teletext subtitle transcoding is supported from WST to RDD-08 by taking the
decoded bytes from the WST signal and inserting them into the payload within the SDP (see
below). Transcoding from RDD-08 to WST is only possible if the SDP contains valid subtitles,
which are extracted and encoded as an output WST signal.
Menu Choice
Operation
625 captions
•
WST (Default)
•
CEA-608
SD VBI setup
WST Origin Line 7 to 22
•
Off (default)
•
Enable
WST Origin Line 7 to 22
Status
Reports WST status of each input line
WST OP Line 7 to 22
Status
Reports status of each output line
Allow WST Remap
•
Off (default)
•
Enable
WST Origin Line
Select from 7 to 22 using slider or numeric entry
Default is line 10
WST Origin Line Status
Reports status of the origin line
WST Output Line
Select from 7 to 22 using slider or numeric entry
Default is line 10
WST Output Line Status Reports the chosen output line
Note
: Only one WST origin line may be remapped
Table 1.
Menu List
