[mythtv-users] PVR500 Tuning

Conrad conrad.montlouis at gmail.com
Wed Apr 2 21:19:35 UTC 2008


Perhaps I'm using the term tuning improperly.  I really mean receiving a
signal.
I do own the breakout pannel for the PVR500. If I am correct, I believe that
there is only one svideo output from the STB, will that be sufficient to
send signals to both 'tuner' on the board.  If not how then do I get both
'tuners' to work?
Thanks


On 4/2/08, Brad DerManouelian <myth at dermanouelian.com> wrote:
>
> Conrad wrote:
> > I have a PVR500, connected to a dish receiver, in my Mythbuntu box and I
> > am unable to get anything on the second tuner /dev/video1.  I've
> > tried to record a test vid file and all I get is a black screen.
> > Tuner does not seem to work at all so I am using (have used) the
> > following input connections so far:
> > a)
> >
> >     * /dev/video0 --> composite 1
> >     * /dev/video1 --> s-video 2
> >
> > b)
> >
> >     * /dev/video0 --> composite 1
> >     * /dev/video1 --> s-video 1
> >
> > c)
> >
> >     * /dev/video0 --> composite 1
> >     * /dev/video1 --> composite 2
> >
> > In addition I am unable to effectively change the channel on either
> > inputs from the console using ivtv-tune.  I seem to be stuck on whatever
> > channel the dish receiver is on.
> >
> > Any insight.
> >
> > Thanks.
>
> Yeah. You're doing it all wrong. ;)
>
> The only tuning your PVR-500 card can do is on the tuner. Meaning, the
> RF connection (coax cable). The ivtv calls this connection "tuner"
> followed by a number representing which tuner (there are 2 on your card).
>
> That means changing a channel (ie "tuning") cannot happen on the svideo
> or composite connections since there is no such thing as tuning on
> something that's not a tuner. :)
>
> So if I understand you correctly, you have a dish receiver and are going
> from s-video on your dish to svideo on your pvr-500 card. This means
> that you need some means of changing the channel on the dish receiver.
> Either an ir blaster or serial connection (not sure if dish can use
> serial. I use DirecTV which can do this.) Then you need a script that
> will tell that channel-changing device to change the channel on the dish
> box. You should check the wiki for ways to change channels on dish
> receivers. Your search should show you some hardware options as well as
> channel changing scripts.
>
> Also note that in order to use the second s-video port on the pvr-500,
> you need to use the included breakout panel that has the second s-video
> connector on it.
>
> As far as composite goes, I would avoid it since svideo is better
> quality and you have it available to you so you might as well use it.
>
> -Brad
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