[mythtvnz] DVB-S card on demand?

Sun, 8 Jul 2007 20:25:42 +1200

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Unless it glitches the 22kHz on when its tuning in. I had an old STB here
that would do that on powerup and it would cause issues on the skybox on the
same dish.

From: mythtvnz-admin@lists.linuxnut.co.nz
[mailto:mythtvnz-admin@lists.linuxnut.co.nz] On Behalf Of Steve Hodge
Sent: Saturday, July 07, 2007 11:19 PM
To: mythtvnz@lists.linuxnut.co.nz
Subject: Re: [mythtvnz] DVB-S card on demand?

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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<div class=3DSection1>

Unless it glitches the 22kHz on when its tuning in. I had =
an old
STB here that would do that on powerup and it would cause issues on the =
skybox
on the same dish.<o:p></o:p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

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color:#1F497D'><o:p>&nbsp;</o:p></span></p>

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0in 0in 0in'>

<p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
mythtvnz-admin@lists.linuxnut.co.nz
[mailto:mythtvnz-admin@lists.linuxnut.co.nz] <b>On Behalf Of </b>Steve =
Hodge<br>
<b>Sent:</b> Saturday, July 07, 2007 11:19 PM<br>
<b>To:</b> mythtvnz@lists.linuxnut.co.nz<br>
<b>Subject:</b> Re: [mythtvnz] DVB-S card on =
demand?<o:p></o:p></span></p>

</div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>On 7/7/07, <b>Robin Gilks</b> &lt;<a
href=3D"mailto:g8ecj@gilks.org">g8ecj@gilks.org</a>&gt; =
wrote:<o:p></o:p></p>

<div>

<blockquote style=3D'border:none;border-left:solid #CCCCCC =
1.0pt;padding:0in 0in 0in 6.0pt;
margin-left:4.8pt;margin-right:0in'>

<p class=3DMsoNormal>If I'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 'on demand' mode in =
mythtv-setup?<o:p></o:p></p>

</blockquote>

<div>

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. <o:p></o:p>

</div>

<blockquote style=3D'border:none;border-left:solid #CCCCCC =
1.0pt;padding:0in 0in 0in 6.0pt;
margin-left:4.8pt;margin-right:0in'>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>Also, my capture script currently uses dvbtune to =
select the
correct<br>
transport but, since I'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?<o:p></o:p></p>

</blockquote>

<div>

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. =
<o:p></o:p>

</div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<p class=3DMsoNormal style=3D'margin-bottom:12.0pt'>Cheers,<br>
Stev<o:p></o:p></p>

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