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MediaPortal 1
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DVB-S2 multi-satellite setup help wanted (in Luxembourg)
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<blockquote data-quote="mm1352000" data-source="post: 1129237" data-attributes="member: 82144"><p>Ahhh, it all starts to make sense... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>This subject could take several hours to explain in full detail. The short version is that the cable from the multiswitch to your wall socket has limited capacity. It can only supply one "band" at a time. When I say band, I mean a combination of DiSEqC setting (satellite), 22 kHz tone setting (low or high band) and polarisation. Tuners and STBs send signals (voltage etc.) to the multiswitch (or LNB - it would be the same) in order to select the band (for you: one out of the twelve available, because you have three satellites) that carries the channel that you want to receive. The splitter that you added allows four tuners or STBs to share access to the same one band. If two of the tuners want channels from different bands... well, only one tuner will receive the desired channel.</p><p></p><p>In other words, if you have 2 tuners then ideally you should have 2 connections on the wall socket to the apartment block multiswitch. Having said that, maybe most of the channels that you want to receive are carried in one band... in which case you have no problem. If you wanted to receive UK channels and German channels at the same time... well, that would require 2 connections to the apartment block multiswitch.</p><p></p><p></p><p>Satellite splitter outputs are not independent like cable (DVB-C) or terrestrial (DVB-T/T2) splitter outputs. As I mentioned above: each tuner or STB has to send signals to the multiswitch to select the band that includes the channel that you want to see. With your one connection to the apartment multiswitch, you are limited to one band. If any STB or tuner in your apartment selects [for example] "band 1" (eg. UK channels) then all STBs and tuners will only receive that band. Again and in other words: if your STB selects the band which carries UK channels, the PC tuners will also only receive those channels. If one of your PC tuners selects a band which carries some German channels, the STB and the other PC tuner will also only receive those channels. The STBs and tuners can "fight for control"... but still you are limited to one band.</p><p></p><p></p><p>If you want to have 2 tuners then what you really need is a second connection from the multiswitch to your apartment. The splitter is not totally useless, because it allows you to share the connection that you have amongst the tuners and STBs in your apartment... but even with 1 million outputs it could never remove the one band limitation.</p><p></p><p></p><p>It depends on which channels you want to receive. If you want to receive channels from all 3 satellites with both tuners at any time then removing the STB will make absolutely no difference.</p><p></p><p></p><p>Correct. Yes.</p><p>...and to be clear, it is not just different satellites. It is different bands also. For example, even if the tuners are using the same satellite, they might want to access channels from transponders with different polarisation (vertical or horizontal). That would not be possible either.</p><p></p><p></p><p>No problem. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p>In lieu of a beer, I'd be happy if you would consider a small donation to the team. The money goes towards our operational costs (servers, hosting etc.).</p><p><a href="https://www.team-mediaportal.com/support/donate-give-funds-or-gifts" target="_blank">https://www.team-mediaportal.com/support/donate-give-funds-or-gifts</a></p><p></p><p>There's no pressure. I'm here to help whether people donate or not. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Best regards,</p><p>mm</p></blockquote><p></p>
[QUOTE="mm1352000, post: 1129237, member: 82144"] Ahhh, it all starts to make sense... :) This subject could take several hours to explain in full detail. The short version is that the cable from the multiswitch to your wall socket has limited capacity. It can only supply one "band" at a time. When I say band, I mean a combination of DiSEqC setting (satellite), 22 kHz tone setting (low or high band) and polarisation. Tuners and STBs send signals (voltage etc.) to the multiswitch (or LNB - it would be the same) in order to select the band (for you: one out of the twelve available, because you have three satellites) that carries the channel that you want to receive. The splitter that you added allows four tuners or STBs to share access to the same one band. If two of the tuners want channels from different bands... well, only one tuner will receive the desired channel. In other words, if you have 2 tuners then ideally you should have 2 connections on the wall socket to the apartment block multiswitch. Having said that, maybe most of the channels that you want to receive are carried in one band... in which case you have no problem. If you wanted to receive UK channels and German channels at the same time... well, that would require 2 connections to the apartment block multiswitch. Satellite splitter outputs are not independent like cable (DVB-C) or terrestrial (DVB-T/T2) splitter outputs. As I mentioned above: each tuner or STB has to send signals to the multiswitch to select the band that includes the channel that you want to see. With your one connection to the apartment multiswitch, you are limited to one band. If any STB or tuner in your apartment selects [for example] "band 1" (eg. UK channels) then all STBs and tuners will only receive that band. Again and in other words: if your STB selects the band which carries UK channels, the PC tuners will also only receive those channels. If one of your PC tuners selects a band which carries some German channels, the STB and the other PC tuner will also only receive those channels. The STBs and tuners can "fight for control"... but still you are limited to one band. If you want to have 2 tuners then what you really need is a second connection from the multiswitch to your apartment. The splitter is not totally useless, because it allows you to share the connection that you have amongst the tuners and STBs in your apartment... but even with 1 million outputs it could never remove the one band limitation. It depends on which channels you want to receive. If you want to receive channels from all 3 satellites with both tuners at any time then removing the STB will make absolutely no difference. Correct. Yes. ...and to be clear, it is not just different satellites. It is different bands also. For example, even if the tuners are using the same satellite, they might want to access channels from transponders with different polarisation (vertical or horizontal). That would not be possible either. No problem. :) In lieu of a beer, I'd be happy if you would consider a small donation to the team. The money goes towards our operational costs (servers, hosting etc.). [url]https://www.team-mediaportal.com/support/donate-give-funds-or-gifts[/url] There's no pressure. I'm here to help whether people donate or not. :) Best regards, mm [/QUOTE]
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DVB-S2 multi-satellite setup help wanted (in Luxembourg)
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