Need help scanning for channels DVB-C (1 Viewer)

[zicoz]

Forgive me if this is the wrong place for this, but it's the best I found.

Trying to set up a computer with Mediaportal for someone over the net. He has a small local Cable-distributor named Loqal, but I have only worked with DVB-T before and there all I had to do was to select my closes broadcasting tower and press scan.

I've done some googleing and it seems that I need to use SymbolRate 6875 (whatever that is) but the only preset I get for DVB-C in Norway is "GET - Oslo" and that uses SymbolRate 6900 when it scans. So I get no result there.

What do I need to do to get this working?

Edit:

Ok I did a few searches with some of the other presets. There is finnish one (VLP) that detects some of the channels. I open it up, and find this:

<DVBCTuning>
<Frequency>418000</Frequency>
<ModulationType>Mod64Qam</ModulationType>
<SymbolRate>6875</SymbolRate>
</DVBCTuning>

So if I am correct, I can find frequences in another program or on the TV I should be able to just edit this file and give it a new name correct? Should I submit the new file somewhere for others to use?

Edit 2: Ok just did a complete scan in the 6875 global preset but only found 9 of the channels they broadcast, there should be alot more. Anyone got any suggestions?

 

[grouper]

Try to find out which modulatioun QAM is used.Best, find out the technical information for one TV Station, then do a manual search with this parameters.

 

[CHli]

Did you try : global => dvbc symbolrate 6875 ? If you don't find anything there then edit the xml file and search/replace the qam setting to the approriate one. Mod64Qam or Mod256Qam (I did not check what is configured in the files)

As a quick theory you have these differents settings affecting the scanning results :

• Frequency of the transponder : (between ~50MH-~850MHz), what I don't know is if there is a list of commonly used transponder frequencies (If it's define in the standard or if it's up to the provider to decide where they want to have their channel)

• QAM settings : (the number of possible values per / symbol) E.G. QAM 256 = 2^8 => 8 bits per symbol, the higher the value the better the signal needs to be to receive error free streams.

• Symbol Rate : numbers of symbols per second. (tied to the channel bandwidth)

 

[zicoz]

After alot of work I did a simple scan on one of the transponders I had already found, I then got a popup saying it found 16 other transponders, and asked if I wanted to scan those aswell. I answered yes and the rest of the channels popped up.