[linux-dvb] Signal strength / quality

Michael K linux-dvb at nomaden.dyndns.dk
Tue Jan 23 18:01:31 CET 2007


Hi!

I recently added a Terratec Cinergy 1200 DVB-C to my MythTV-box.

My recordings seems to be okay, but one of the channels has delay in the
audio stream, and XBMC's mplayer aborts when the recording has played
for some time. Could this be caused by a poor signal?

from dvbsnoop -s signal:

Transponder/Frequency signal strength statistics...
---------------------------------------------------------
cycle: 1  d_time: 0.001 s  Sig: 31097  SNR: 63222  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 2  d_time: 0.032 s  Sig: 31097  SNR: 63222  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 3  d_time: 0.032 s  Sig: 31097  SNR: 63222  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 4  d_time: 0.032 s  Sig: 31097  SNR: 63222  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 5  d_time: 0.032 s  Sig: 31097  SNR: 63222  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 6  d_time: 0.032 s  Sig: 31097  SNR: 63222  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 7  d_time: 0.032 s  Sig: 31097  SNR: 63222  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 8  d_time: 0.032 s  Sig: 31097  SNR: 63479  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 9  d_time: 0.032 s  Sig: 31097  SNR: 63479  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 10  d_time: 0.032 s  Sig: 31097  SNR: 63222  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 11  d_time: 0.032 s  Sig: 31097  SNR: 63479  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 12  d_time: 0.032 s  Sig: 31097  SNR: 63222  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 13  d_time: 0.032 s  Sig: 31097  SNR: 63222  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 14  d_time: 0.032 s  Sig: 31097  SNR: 63222  BER: 260  UBLK: 0 
Stat: 0x1f [SIG CARR VIT SYNC LOCK ]

I haven't been able to find much information regarding signal strength /
quality so any feedback would be welcome.

/Michael



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