If you are using the TV server you can set the priority of the TV cards. The card with the highest priority will be used to tune the channel. (Not sure if this is the same for the in built TV engine)
For example in my system I have a Nova T 500 for digital and a PVR150 for analogue (using STB as source). I have the 2 tuners of the Nova T set with a higher priority than the analogue card as they give a better picture although they have less available channels.
If I select a channel that is supported by all cards the digital card is chosen first and so i always get the best quality source available.
However I have got a few channels that are available on both analogue and digital sources but the digital channels only transmit for a part of the time that the analogue channels transmit for. To overcome this problem I setup the analogue channels first and I slightly change the name of the channels that I dont want merged.
When the digital channels are scanned it only seems to merge the channels that have identical names so the channels with the slightly altered names are kept seperate.
Alternatively there is a check box in the channel scanning section of the TV server that prevents channels with the same name from being merged (although this option is only available for my analogue card). You can then manually configure which channels that you want merged.
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