VBI Data Transmission
SE4000 MPEG-2 Contribution Encoder
B-2
01-0934-401-B
Tiernan’s TE6000 and SE4000 encoders and the TDR60 decoder can process data contained in
the VBI region of a video signal according to the following methods and standards:
•
DVB-Teletext: – DVB standard for transmission of World System Teletext (WST) included
on a composite analog PAL format video signal.
•
ATSC-CC – ATSC standard for transmission of Line 21 closed captions included on a
composite analog NTSC format video signal.
•
Tiernan-CC – A Tiernan proprietary scheme for transmission of Line 21 closed captions
included on a composite analog NTSC or component digital (525) format video signal.
•
DVB 4:2:2 Expanded Windows – DVB standard for transmission of 16 or 32 lines of VBI
data included on a composite analog or component digital (SDI) format video signal. This
standard supports both PAL/625 and NTSC/525 format video standards.
B.1 System Configuration
This section describes system configuration for successful end-to-end processing of VBI data for
each VBI scheme. For a detailed description of the front panel or remote commands used to
implement the various VBI schemes, refer to the appropriate command sections found in this
manual.
B.1.1 DVB Teletext
Tiernan encoders and decoders process VBI teletext data within a video signal according to WST
standards. Teletext is supported on composite analog PAL format video signal only.
B.1.1.1 Hardware Requirements
All SE4000 Encoders support all VBI modes. TE6000 Encoders require a TVIP -6025 module.
The TDR60 decoder processes VBI data in its standard configuration.
B.1.1.2 Operational Considerations
VBI teletext should not be enable with other VBI encoding formats, as teletext overwrites all other
VBI data.
B.1.1.3 End-to-End Configuration
To configure the encoder and decoder for Teletext processing, follow these steps:
Encoder
1.
Ensure that Teletext VBI data is included in the selected service video input signal.
2.
Ensure that the video input source is set to auto or analog. Use the front panel command
Config>Service>Video>Input Source or the remote VI FMTCTL command.
3.
Set the encoder to PAL mode. Issue the front panel command Config>Service>Video>
Format Ctrl=PAL or the remote VI FMTCTL PAL_N command.
4.
Enable the encoder for Teletext processing. Issue the front panel command
Config>Service >VBI>Teletext>Enable=All or the remote. TT ENABLE ALL command.
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Страница 121: ...Technical Specifications SE4000 MPEG 2 Contribution Encoder A 4 01 0934 401 B...
Страница 141: ...Conditional Access SE4000 MPEG 2 Contribution Encoder C 12 01 0934 401 B...
Страница 149: ...Table Top Rack Mount Installation Instructions SE4000 MPEG 2 Contribution Encoder E 4 01 0934 401 B...
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