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-   -   HDTV tuner confusion (http://www.homecinemabanter.com/showthread.php?t=62539)

UCLAN March 22nd 09 07:26 PM

HDTV tuner confusion
 
Wes Newell wrote:

AFAIK, all ATSC tuners do have 8VSB (OTA) capability.

As I wrote twice in this thread, ATSC tuners *have* to demodulate
8VSB. It's in the ATSC specification. A tuner cannot be called an
ATSC tuner if it *can't* demodulate 8VSB.

Worse case of Violent Agreement I have seen in a long time!-)

Except for the use of "AFAIK." Since 8VSB is mandatory (according to
the ATSC spec), "AFAIK" is a very illuminating qualifier.

Did it cross your mind that he was being humble?


By leaving the possibility that a non-8VSB compliant ATSC tuner exists?
No. BY DEFINITION, an ATSC tuner is 8VSB compliant.


So then what are QAM cable boxes without 8vsb support? Since QAM is a part
of the ATSC spec, wouldn't that make them ATSC tuners.:-)


Might be true *if* QAM is mandated in the ATSC spec, but they aren't. That's
why cable boxes *aren't* called ATSC tuners. Since they don't support 8VSB,
they aren't!

UCLAN March 22nd 09 07:29 PM

HDTV tuner confusion
 
Wes Newell wrote:

On Sun, 22 Mar 2009 07:07:43 +0000, Wes Newell wrote:


So then what are QAM cable boxes without 8vsb support? Since QAM is a
part of the ATSC spec, wouldn't that make them ATSC tuners.:-)


BTW, only 16 qam is part of the atsc standard, not 256 qam, which is the
cable standard.


Looks like you just answered your own question!


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