[linux-dvb] Tuning failing for TT S 1500

manu eallaud at yahoo.fr
Sun Nov 19 20:23:47 CET 2006


Le 19.11.2006 09:19:31, manu a écrit :
> Le 19.11.2006 09:08:02, manu a écrit :
>> 	Hi all,
>> I am trying to get scan to build the channels.conf file but in vain.  
>> It says tuning failed on all transponders I set up (my sat is  
>> intelsat 801 - 31,5W) saying tuning status == 0x03. What does this  
>> mean?
>> I tried also with kaffeine which has the signal strength sometimes  
>> at 95% and most of the time around 30%, and the SNR is always 44%  
>> which probably means that it does not say much.
>> I know the dish has been used successfully with an STB until 2  
>> months ago by the people before me so it should not be a problem  
>> from this.
>> Thx for any help
>> Bye
>> Manu
>> 
> 
> forgot to give the transponders file content (taken from lyngsat)
> 
> # Intelsat 801 31.5W
> # freq pol sr fec
> S 11553000 V  2355000 AUTO
> S 10979000 H 30000000 AUTO
> S 11060000 H 30000000 AUTO
> S 11482000 H 30000000 AUTO
> S 11618000 H 30000000 AUTO
> 

Just to add a bit more info here is what dvbsnoop -s signal gives me  
during a scan

---------------------------------------------------------
Transponder/Frequency signal strength statistics...
---------------------------------------------------------
cycle: 1  d_time: 0.001 s  Sig: 63026  SNR: 29988  BER: 0  UBLK: 0   
Stat: 0x03 [SIG CARR ]
cycle: 2  d_time: 0.002 s  Sig: 63026  SNR: 29973  BER: 0  UBLK: 0   
Stat: 0x03 [SIG CARR ]
cycle: 3  d_time: 0.001 s  Sig: 63033  SNR: 29964  BER: 0  UBLK: 0   
Stat: 0x03 [SIG CARR ]
cycle: 4  d_time: 0.002 s  Sig: 63050  SNR: 29952  BER: 0  UBLK: 0   
Stat: 0x03 [SIG CARR ]
cycle: 5  d_time: 0.001 s  Sig: 62985  SNR: 29943  BER: 0  UBLK: 0   
Stat: 0x03 [SIG CARR ]
cycle: 6  d_time: 0.001 s  Sig: 63021  SNR: 29922  BER: 0  UBLK: 0   
Stat: 0x03 [SIG CARR ]
cycle: 7  d_time: 0.003 s  Sig: 62720  SNR: 29913  BER: 0  UBLK: 0   
Stat: 0x03 [SIG CARR ]
cycle: 8  d_time: 0.002 s  Sig: 63041  SNR: 29895  BER: 0  UBLK: 0   
Stat: 0x03 [SIG CARR ]

For some transponders (with much lower sig strength) I also get a BER  
of maximum 264.

 From what I understand I get the Carrier signal but no lock even with  
good signal strength. It might be that the "good" transponders have no  
channels and only the worst ones (sig around 20000) have something, as  
I know those ones being part of a bouquet.

Well if anyone can make some sens out of it, I will be glad to hear  
him/her ;-)
Thx
Manu

	

	
		
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