Link electronic Switch IEC 787 User Manual

700 SERIES  
LINK ELECTRONICS, INC.  
VERTICAL BLANKING INSERTION  
MODEL IEC-787  
MADE IN THE USA  
FEATURES  
VBI Insertion  
Field 1 & Field 2 Process  
Line 10 thru 21  
Recover Lost Captions  
The LINK model IEC-787 is a video inserter that  
provides an economical way to recover signals in  
the vertical blanking interval that may be lost  
during video processing such as video  
compression or overlay and comb filtering. This  
would include Closed Caption data on line 21,  
Ghost Cancellation Reference signal on line 19  
and other signals in the vertical interval.  
Differential input configuration is standard on both  
video inputs, but single endedconfigurationcan be  
selected by an internal jumper.  
A switchable Monitor output allows the user to  
view either of the video inputs ahead of the keyer.  
For system timing, a front panel calibrate switch  
will cause the unit to alternate between inputs at a  
field rate. If no input is connected to the VBI  
Source Input BNC, the IEC-787 may be used to  
simply pass or delete selected lines in the VBI of  
the program video.  
Using front panel switches, any of lines 10 through  
21 may be selected for insertion by the IEC-787.  
Odd and even fields are handled separately. The  
keyer employs the same high performance phase-  
linear circuit used by LINK Closed Caption  
equipment to provide clean insertion, completely  
free of artifacts. Overall video handling is  
outstanding as well.  
Packaged in LlNK's attractive and rugged 700  
series chassis, and covered by a ten-year  
warranty, the IEC-787 will provide years of reliable  
service.  
LINK  
ELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 63703-7668  
Phone 573 334 4433 FAX 573 334 9255  
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