Cobalt Digital COMPASS 9822 Downconverter - Manual (Page 65)

9822-OM (V4.1) 9822 PRODUCT MANUAL 3-33
Operating Instructions
9822 Function Submenu List and Descriptions
Provides support for closed captioning setup.
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.
• Closed Captioning On/Off Turns on or turns off waveform-based line 21 Closed Captioning output for
SD down-conversions.
Note: • Closed captioning control is intended for SD down-conversion
only. If an HD input is to be passed with the Scaler bypassed,
make certain Closed Captioning is set to Off. If control is set to
On, packet may be removed.
• Closed captioning line may contain active unintended data even if
closed captioning is set to Off. If closed captioning is not to be
used, it is recommended to use the Top Line Suppression
control to eliminate the possibility of this unintended data from
appearing in the active video area.
(See Scaler tab SD: Top line suppression control on page 3-14
for more details.)
Closed Captioning
• Closed Captioning Input Status Displays incoming Closed Captioning status as follows:
• If closed captioning is present, a message similar to the example shown
left is displayed. Also displayed is the VANC line number of the incoming
closed captioning packet (or SD waveform-based VANC line number).
• If no closed captioning is present in the video signal, Not Present or
Disabled is displayed.
Note: • Packet closed captioning status Captioning Rejected Due To
message can appear 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 below. Refer to CEA-708-B for more information.
• caption service is marked as inactive display indicates bit in
packet from upstream source may inadvertently be set as
inactive. In this case, closed captioning data (if present) is still
processed and passed by the card as normal.
• The closed captioning function does not support PAL closed
captioning standards.
Table 3-2 9822 Function Submenu List — continued
Message Description
Unsupported Frame Rate Film rate closed-captioning
(either as pass-through or up/
down conversion) is not
supported by the card.
Data Not Present Packet is marked from closed
captioning source external to the
card that no data is present.
No Data ID Packet from closed captioning
source external to the card is not
properly identified with 0x9669
as the first word of the header
(unidentified packet).