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On 06/05/2010 02:01, <a class="moz-txt-link-abbreviated" href="mailto:lindsay.mathieson@gmail.com">lindsay.mathieson@gmail.com</a> wrote:
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On Thursday 06/05/2010 at 10:31 am, Ed W wrote:
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I have one of these as a trial:<br>
<a moz-do-not-send="true" target="_blank"
href="http://www.amazon.co.uk/gp/product/B001RP6YL6/ref=oss_product">http://www.amazon.co.uk/gp/product/B001RP6YL6/ref=oss_product</a><br>
(PEAK External Dual Channel DVB-T TV Tuner)<br>
<br>
Seems to be working ok and I'm going to buy 2 more and see what <br>
happens... I believe that this may be really saturating the USB bus,
but <br>
I am not sure what tool I can use to check that? I don't have much else
<br>
interesting connected though<br>
</blockquote>
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The USB bus has way more bandwidth than is needed for HD, you could
have 4 HD tuners recording simultaneously with no problems. From
memory, your average HD channel maxes out at 50 Mbs, even for 1080p,
whereas USB 2.0 has 480Mbs availble.<br>
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<br>
Also, although Devin can probably confirm (?) I thought I saw that
several USB devices dump the whole TS stream over the USB bus and leave
it for the host to demux it?<br>
<br>
Devin can you comment on the Peak above? It identifies itself in dmesg
as:<br>
af9013: found a 'Afatech AF9013 DVB-T' in warm state.<br>
af9013: firmware version:4.95.0<br>
usbcore: registered new interface driver dvb_usb_af9015<br>
<br>
So far it's been running very solidly and in free air it's just lightly
warm. The format is also nice, ie you just have a couple of antenna
wires out of the wall, a lump in the middle of them, followed by USB at
the far end. <br>
<br>
I just bought 2x more of these... I'm hoping they will work out...<br>
<br>
Cheers<br>
<br>
Ed W<br>
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