On Jan 16, 2008 7:17 AM, Stuart Morgan <<a href="mailto:stuart@tase.co.uk">stuart@tase.co.uk</a>> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="Ih2E3d">On Wednesday 16 January 2008 13:10:45 Stuart Morgan wrote:<br>> Not sure about support for North American cable, since I don't know what<br>> standard that uses, direct mpeg2 streams? (QAM is the wire transmission
<br>> standard not the data format and should not be likened direct to DVB/ATSC<br>> which also both use QAM).<br><br></div>Sorry, ATSC uses a different modulation - 8VSB, before anyone points out the<br>error.<br><br>
I've seen some suggestions that NA Cable uses ATSC but I can't find any<br>verifiable sources to back this up.<br><div><div></div><div class="Wj3C7c"></div></div></blockquote><div><br>NA cable does indeed use ATSC, with the exception of the modulation scheme. Most cable systems use 64-QAM or 256-QAM modulation, or some combination. A few very old systems might use 16VSB.
<br><br>Carl Fongheiser<br></div></div><br>