[mythtv] Current SVN DVB-S zapping problems (diseqc?)
Yeasah Pell
yeasah at schwide.com
Mon Aug 28 19:15:43 UTC 2006
> [card1]------|---------------|
> [card2]------| 8 ports in |
> --| 2 ports out |----(port 1)------- [universal LNB]
> --| switch |----(port 2)-------[empty]
> --|---------------|
> cards are connected to ports where i am _not_ able to switch if it has to use
> 22kHz for switching low/high. These are only diseqc ports.
>
>
I see. How does this switch decide which input to route to which output
at any given time? (Forgive me for the basic questions, I'm not familiar
with big multi-switches like this) I don't see how it can work if both
cards get connected to the same LNB, since the cards will both want to
supply a specific voltage, as well as a specific tone presence (to
control polarization and band) -- and they'll conflict if they are
connected to the same device (unless the switch disambiguates it somehow)
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