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TECHNICAL DESCRIPTION
Models 8084/8084AD/8085 Closed Caption Encoder Manual
5.4.2
Modems
The basic unit is fitted with Cermetek CH1794 modem known as port D. A
second optional modem known as port E may be fitted at the factory.
These modems are capable of baud rates up to 14400bps, but the actual
connection rate parameters are set from the front panel menus or serial
ports. The modems handle all the necessary interconnection between the
caption encoder and a remote captioning station through the telephone
network.
5.4.3 Analog Composite Monitor 9000CME
Digital video from the main circuit board is fed up the header to the
9000CME submodule, where it is converted to composite analog video.
Two video output amplifiers are provided to drive analog monitors. The
9000CME is capable of encoding NTSC or PAL video types, depending on
the input digital video format.
The 9000CME also contains a caption decoder capable of viewing all
caption streams, text data streams and many XDS packet types, including:
•
Program Rating Advisories (V-Chip) – separate display from other XDS
•
Station Name and Call Letters
•
Length of Show and Time Left in Show
•
Program Type
•
Program Description (4 lines)
Revision 1.6.6
Page 5-10
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