Ross OpenGear HDC-8223A, Руководство пользователя

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4–8 • Operation HDC-8223A(-S) User Manual (Iss. 03)
Closed Captioning
The Closed Captioning feature provides support for closed captioning setup. Note that this feature
does not support PAL closed captioning standards.
For More Information on...
• the menus and parameters available for the closed captioning feature, refer to the section
“ Closed Captioning Tab ” on page 5-15.
Troubleshooting
The message “
Captioning Rejected Due to
” is displayed due to the items described below.
The closed captioning function assesses
cdp_identifier
,
cdp_frame_rate
,
ccdata_present
, and
caption_service_active
items contained in the packet header to
make the determinations listed in Table 4.2 . Refer to CEA-708-B for more information.
Note
— When receiving HD-SDI, both CEA-608 and CEA-708 are supported, with CEA-608
and CEA-708 (containing CEA-608 packets) converted to Line 21 closed captioning on outputs
down-converted to SD.
Table 4.2 Captioning Rejected Messages
Message Description
Unsupported Frame Rate
Film rate closed-captioning (either as
pass-through or up/down conversion) is not
supported by the HDC-8223A(-S)
Data Not Present
Packet is marked from closed captioning
source external to the HDC-8223A(-S) that no
data is present
No Data ID
Packet from closed captioning source external
to the HDC-8223A(-S) is not properly
identified with 0x9669 as the first word of the
header (unidentified packet).