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<blockquote data-quote="mm1352000" data-source="post: 706700" data-attributes="member: 82144">Hi thereOther people have that tuner working fine in MediaPortal - the fact that the tuners have the same name is not a problem. What you *do* need to be aware of is that if you have both sat tuners connected to a power-pass splitter rather than a proper multi-switch or multi-output LNB then you can only use both tuners on transponders with the same polarity. Lets have a small example:Transponder A------------------- ch 1- ch 2- ch 3Transponder B------------------ ch 4- ch 5- ch 6If transponder A and B are both horizontal then you can watch/record channels 1, 2 and 3 on one tuner and channels 4, 5 and 6 on the second tuner. Same applies if they're both vertical transponders. However, if one is horizontal and the other is vertical then you'll have trouble. The low level signalling for horizontal is 18V; vertical is 13V. The splitter only passes the highest of the voltages it receives from the tuners connected to it. In other words, if you are ever watching a channel on a horizontal transponder on any tuner connected to the splitter then you'll only be able to watch channels on horizontal transponders on any other tuners connected to the splitter. Going back to our example, if transponder A is horizontal and B is vertical then you'll only be able to watch channels 1, 2, and 3.Hope the above makes sense. If you knew that already or are using a multiswitch or multi-output LNB (with one output for each tuner) then please ignore the above and post some logs showing an example of the problems you're talking about.</blockquote>

[QUOTE="mm1352000, post: 706700, member: 82144"] Hi there Other people have that tuner working fine in MediaPortal - the fact that the tuners have the same name is not a problem. What you *do* need to be aware of is that if you have both sat tuners connected to a power-pass splitter rather than a proper multi-switch or multi-output LNB then you can only use both tuners on transponders with the same polarity. Lets have a small example: Transponder A ------------------ - ch 1 - ch 2 - ch 3 Transponder B ----------------- - ch 4 - ch 5 - ch 6 If transponder A and B are both horizontal then you can watch/record channels 1, 2 and 3 on one tuner and channels 4, 5 and 6 on the second tuner. Same applies if they're both vertical transponders. However, if one is horizontal and the other is vertical then you'll have trouble. The low level signalling for horizontal is 18V; vertical is 13V. The splitter only passes the highest of the voltages it receives from the tuners connected to it. In other words, if you are ever watching a channel on a horizontal transponder on any tuner connected to the splitter then you'll only be able to watch channels on horizontal transponders on any other tuners connected to the splitter. Going back to our example, if transponder A is horizontal and B is vertical then you'll only be able to watch channels 1, 2, and 3. Hope the above makes sense. If you knew that already or are using a multiswitch or multi-output LNB (with one output for each tuner) then please ignore the above and post some logs showing an example of the problems you're talking about. [/QUOTE]

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