[mythtvnz] DVB-S card on demand?

[Steve Hodge]

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On 7/7/07, Robin Gilks <g8ecj@gilks.org> wrote:
>
> If I'm using my DVB-S card to collect Sky EPG data in the middle of the
> night, do I have to set it up in 'on demand' mode in mythtv-setup?


I think so. Even though Myth will always have it locked, the card will only
be tuned when it's recording. So you'd only be able to get EIT data when
Myth was recording from DVB-S.

Also, my capture script currently uses dvbtune to select the correct
> transport but, since I'm sharing with a Sky box any way and only using the
> vertical transports, could I skip that step and have MythTV NOT use the
> on-demand mode since MythTV will then be tuned to one of the 2 vertical
> transports anyway?


No. The LNB selects the polarity (based on the presence or absence of a
select voltage), but it's up to the receiving device to tune a frequency. So
the Sky box will set the LNB to vertical polarity and it's own tuner will be
tuned to a particular frequency but it won't tune the DVB-S card in your
Myth box.

Cheers,
Stev

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On 7/7/07, <b class="gmail_sendername">Robin Gilks</b> &lt;<a href="mailto:g8ecj@gilks.org">g8ecj@gilks.org</a>&gt; wrote:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
If I&#39;m using my DVB-S card to collect Sky EPG data in the middle of the<br>night, do I have to set it up in &#39;on demand&#39; mode in mythtv-setup?</blockquote><div><br>I think so. Even though Myth will always have it locked, the card will only be tuned when it&#39;s recording. So you&#39;d only be able to get EIT data when Myth was recording from DVB-S.
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Also, my capture script currently uses dvbtune to select the correct<br>transport but, since I&#39;m sharing with a Sky box any way and only using the
<br>vertical transports, could I skip that step and have MythTV NOT use the<br>on-demand mode since MythTV will then be tuned to one of the 2 vertical<br>transports anyway?</blockquote><div><br>No. The LNB selects the polarity (based on the presence or absence of a select voltage), but it&#39;s up to the receiving device to tune a frequency. So the Sky box will set the LNB to vertical polarity and it&#39;s own tuner will be tuned to a particular frequency but it won&#39;t tune the DVB-S card in your Myth box.
<br></div><br></div>Cheers,<br>Stev<br><br>

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