Link electronic VBI Caption/Data Processor Encoder/Decoder PDR-885 - Manual

CLOSED CAPTION SERIES
LINK ELECTRONICS, INC.
VBI CAPTION/DATA PROCESSOR
ENCODER/DECODER
Model PDR-885
FEATURES
‹ Encode, Data Recovery
‹ Field 1 or Field 2
‹ Caption & Text
‹ Decoder Output
‹ Optional Modem
The PDR-885 is a Closed Caption Encoder with an
integral Decoder for inserting caption and text data
on Line 21 of the NTSC signal. However, this
important function is only the beginning of the
PDR-885 capabilities.
Caption and Text data may be inserted in either
field of the Vertical Blanking Interval. In addition,
data on the incoming video signal may be
recovered from either field of the VBI. This
incoming data may be displayed as Open
Captions, using the built-in Closed Caption
Decoder, and captured by a computer utilizing the
PDR-885's serial data port. Each of these
important functions, Encoding, Decoding, and Data
Recovery may be done simultaneously.
The Closed Caption Decoder's functions may be
controlled from the front panel while the Encoder
and Data Recovery functions are controlled via the
serial data port. The video data path approaches
perfection, with differential phase and gain errors
less than 0.1° and 0.1% respectively. Video
bandwidth is >26MHz while Signal to Noise
exceeds 60dB. Inputs and outputs are provided for
composite NTSC video as well as Component (R-
Y/B-Y/Y) and S-Video.
‹ Y,R-Y,B-Y Input & Output
‹ Two Composite Outputs
‹ S/VHS Input & Output
‹ RS-232C Controlled, RS-422 Option
‹ V-Chip Compatible
If composite video is used, a high performance
relay provides power-off by-pass of the program
video. For remote captioning applications, a
second serial port is available as a modem input.
Both serial ports may be configured for RS-232 or
RS-422 I/O, with optional plug-in PCB. An internal
jumper allows baud rate selections of 1200 to 9600
bps. A modem and computer may be connected
simultaneously to process local and remote
caption data, only one active at a time.
Front panel LED's show the unit status and the
presence of data on the incoming video. A pair of
front panel push-buttons allow the user to run an
encoded test message or to place the unit in by-
pass mode.
The PDR-885 is ready for V-Chip technology. This
technology will allow parents to block violent or
otherwise offensive television programming from
their TV sets. LINK Electronics is incorporating this
technology in the firmware of the PDR-885. The
PDR-885 handles the automatic repetition of the
"V-Chip" data and can interleave it with existing
Line 21 Closed Caption data. An optional plug-in
modem is available that operates at 1200 or 2400
baud.
LINK
ELECTRONICS, INC. ‹ 2137 Rust Avenue ‹ Cape Girardeau, MO 63703-7668
Phone 573 334 4433 ‹ FAX 573 334 9255
MADE IN THE USA