HD490 Smart Encoder
Copyright © 2000-2012 EEG Enterprises, Inc. 40
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GPI-D: Force Regeneration
Activating this function causes all locally input caption data to be
ignored. Upstream caption data will be regenerated as if no local caption
modes were active.
GPI-E through GPI-H: No functionality currently defined
The GPI switches can also be manually configured to perform caption
display relocation. Caption displays can be remapped to avoid either the
top rows or bottom rows of the television screen to avoid blocking
emergency information, news crawls, or other important graphics. These
functions provide compliance with FCC requirements that emergency
alert information be visible to closed caption viewers.
Configure GPI Switches <CTRL+A>R GPI-A GPI-B GPI-C GPI-D <ENTER>
Each of the four parameters assigns a function to the respective GPI
switch. Each parameter should be set to either – (subtract sign), to
indicate that the switch should perform its default function, or a two
character string that will create a new caption relocation function. The
first character of a caption relocation function should be either t to
protect an area at the top of the screen by bumping captions down, or b
to protect an area at the bottom of the screen by bumping captions up.
The second character should be an integer between 2 and 4, indicating
the number of SD captioning rows that should be protected (HD
captions will avoid an approximately equivalent portion of the screen).
Once a caption remapping function has been created, simply close the
corresponding GPI switch to activate it.
Example: <CTRL+A>R – b3 t2 - <ENTER> assigns the second GPI
switch to bump captions up from the bottom 3 SD rows and the third
switch to bump captions down from the top 2 SD rows, and leaves the
first and fourth switches to perform their default operations.
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