9921-FS-OM (V1.18)
9921-FS PRODUCT MANUAL
3-19
Operating Instructions
9921-FS Function Menu List and Descriptions
Closed Captioning
Provides support for closed captioning setup.
• 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.
• The closed captioning function does not support PAL closed
captioning standards.
• Closed Captioning Insert (Processed) /
Removal Controls
Enables or disables Closed Captioning insertion on the output video as
follows:
• Process Closed Captioning set to Enabled replaces incoming CDP
with locally processed packets. This processing allows line number
control, null packet insertion (if desired) and CGMS functions. (Control
set to Enabled always removes incoming CDP and replaces it with the
processed CDP.)
• Incoming Packet Removal set to Enabled strips all CDP from output
video (as long as Process Closed Captioning is not enabled).
Note: • Incoming CDP can be removed or passed unmodified. To use null
packet insertion or (optional) CGMS functions, Process Closed
Captioning must be set to Enabled.
• When Process Closed Captioning set to Enabled, closed captioning
is set to standard default line number. See Ancillary Data Line
Number Locations and Ranges (p. 3-9). (SD output is locked to line
21.)
• The card does not check for conflicts on a given line number. Make
certain selected line is available and carrying no other data.
Table 3-2
9921-FS Function Menu List — continued
HD packet-based display
SD waveform-based display
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.
Service Inactive
Packet is marked from closed
captioning source external to the
card indicating packet does not
contain active caption service.
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).
