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<blockquote data-quote="rsenden" data-source="post: 1106898" data-attributes="member: 24295">I have the following two USB tuners connected to my Mac Mini:<ul>
<li data-xf-list-type="ul">Cinergy T Stick DUAL RC (2xDVB-T)</li>
<li data-xf-list-type="ul">Terratec H7 (1xDVB-C, recently added)</li>
</ul>My cable provider broadcasts both DVB-C and DVB-T signals over the same cable, so all tuners are connected to the same cable. In TV Server setup under Manual Control, I notice the following behavior:<ul>
<li data-xf-list-type="ul">All tuners show good signal quality (98-100) for almost all channels. </li>
<li data-xf-list-type="ul">When timeshifting on two tuners simultaneously (2xDVB-T or DVB-T+DVB-C), no discontinuities are logged.</li>
<li data-xf-list-type="ul">When timeshifting on all three tuners simultaneously, many discontinuities are logged for the second DVB-T tuner. The first DVB-T tuner and the DVB-C tuner show no discontinuities. All tuners still show good signal quality. I have tried many different channel/tuner combinations; every time only the second DVB-T tuner shows these discontinuities.</li>
</ul>Is this likely a cable/signal problem, or could it be that USB is not fast enough for three video streams? Is there anything I can do to further investigate this issue?</blockquote>

[QUOTE="rsenden, post: 1106898, member: 24295"] I have the following two USB tuners connected to my Mac Mini: [LIST] [*]Cinergy T Stick DUAL RC (2xDVB-T) [*]Terratec H7 (1xDVB-C, recently added) [/LIST] My cable provider broadcasts both DVB-C and DVB-T signals over the same cable, so all tuners are connected to the same cable. In TV Server setup under Manual Control, I notice the following behavior: [LIST] [*]All tuners show good signal quality (98-100) for almost all channels. [*]When timeshifting on two tuners simultaneously (2xDVB-T or DVB-T+DVB-C), no discontinuities are logged. [*]When timeshifting on all three tuners simultaneously, many discontinuities are logged for the second DVB-T tuner. The first DVB-T tuner and the DVB-C tuner show no discontinuities. All tuners still show good signal quality. I have tried many different channel/tuner combinations; every time only the second DVB-T tuner shows these discontinuities. [/LIST] Is this likely a cable/signal problem, or could it be that USB is not fast enough for three video streams? Is there anything I can do to further investigate this issue? [/QUOTE]

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