IQUDC30/IQUDC31/IQUDC32/IQUDC33
Operation Using the RollCall Control Panel
Issue 1 Rev 4
Page 83
© 2016 SAM
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.
Teletext pass-through
Teletext pass-through is possible if a valid input teletext subtitle is present and input and
output video standards are the same. For SD video that uses a large number of WST VBI
(where the VBI may have multiple lines of WST and 2 Timecode lines) the unit can
encode/decode/transcode up to 15 lines of WST. In up and down conversion applications, this
would use up to 3 RDD-08 (OP47) packets. RDD08 OP47 allows for 15 lines of WST to be
encoded. SMPTE2031 allows only 5 lines of WST to be encoded,
625 Input - 625 Output
You can select which input lines of WST are encoded on the output. For the lines selected the
status of WST being detected on that line is reported back.
The unit allows for up to 15 lines of WST to be selected on the input. If valid WST is detected
on the selected lines, they will be placed on the same lines on the output. The status for each
line will be reported back.
It is also possible to remap one WST origin line. In this case, select Allow WST remap. If valid
WST is detected on the line selected by “WST origin line” it will be put on the line selected by
the user control “WST output line”.