For a detailed explanation

#172269
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For a detailed explanation of digital broadcast standards, see this article:

http://en.wikipedia.org/wiki/ATSC_standards

For further info, follow the links on codecs, 8VSB and QAM.

“Broadcast safe” is rather confusing: “TV safe” refers to the position of graphics or titles so that they will display on a home receiver. “Legal signal” is more descriptive of correct levels for transmission.

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