dvb-c: TT C-1501: tda827x.c: Cannot hold lock at 746 MHz

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* dvb-c: TT C-1501: tda827x.c: Cannot hold lock at 746 MHz
@ 2010-10-02 14:43 thomas schorpp
  2010-10-02 15:19 ` thomas schorpp
  0 siblings, 1 reply; 3+ messages in thread
From: thomas schorpp @ 2010-10-02 14:43 UTC (permalink / raw)
  To: linux-media

Hello,

Klaas patch is not complete:
http://article.gmane.org/gmane.linux.drivers.dvb/47571

I found a hole at 746MHz with 2.6.34.0 kernel and DE provider kabelbw.de,
Picture fragments and audio bursts only:

Oct  2 15:53:03 tom1 vdr: [16380] receiver on device 1 thread ended (pid=16268, tid=16380)
Oct  2 15:53:03 tom1 kernel: tda827x: tda827xa_set_params:
Oct  2 15:53:03 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
Oct  2 15:53:03 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
Oct  2 15:53:04 tom1 vdr: [16462] setting audio track to 1 (0)
Oct  2 15:53:04 tom1 kernel: tda827x: tda827xa_set_params:
Oct  2 15:53:04 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
Oct  2 15:53:04 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
Oct  2 15:53:04 tom1 vdr: [16279] frontend 0 lost lock on channel 496, tp 746
Oct  2 15:53:04 tom1 vdr: [16279] frontend 0 regained lock on channel 496, tp 746
Oct  2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params:
Oct  2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
Oct  2 15:53:05 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
Oct  2 15:53:05 tom1 vdr: [16279] frontend 0 lost lock on channel 496, tp 746
Oct  2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params:
Oct  2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
Oct  2 15:53:05 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
Oct  2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params:
Oct  2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
Oct  2 15:53:05 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
Oct  2 15:53:06 tom1 vdr: [16279] frontend 0 regained lock on channel 496, tp 746
Oct  2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params:
Oct  2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
Oct  2 15:53:06 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
Oct  2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params:
Oct  2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
Oct  2 15:53:06 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
Oct  2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params:
Oct  2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
Oct  2 15:53:06 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
Oct  2 15:53:06 tom1 vdr: [16268] switching to channel 494

cycle: 78  d_time: 0.004 s  Sig: 51657  SNR: 43690  BER: 1728  UBLK: 55  Stat: 0x00 []
cycle: 79  d_time: 0.004 s  Sig: 52428  SNR: 60395  BER: 1728  UBLK: 57  Stat: 0x03 [SIG CARR ]
cycle: 80  d_time: 0.004 s  Sig: 50886  SNR: 46517  BER: 1728  UBLK: 95  Stat: 0x00 []
cycle: 81  d_time: 0.007 s  Sig: 52428  SNR: 44461  BER: 1728  UBLK: 54  Stat: 0x03 [SIG CARR ]
cycle: 82  d_time: 0.003 s  Sig: 51657  SNR: 61423  BER: 1728  UBLK: 5  Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 83  d_time: 0.237 s  Sig: 40092  SNR: 47288  BER: 1048575  UBLK: 66  Stat: 0x00 []
cycle: 84  d_time: 0.005 s  Sig: 56283  SNR: 45232  BER: 1728  UBLK: 113  Stat: 0x00 []
cycle: 85  d_time: 0.006 s  Sig: 53199  SNR: 46774  BER: 1728  UBLK: 136  Stat: 0x00 []
cycle: 86  d_time: 0.008 s  Sig: 50115  SNR: 44975  BER: 1728  UBLK: 55  Stat: 0x00 []
cycle: 87  d_time: 0.004 s  Sig: 53199  SNR: 53970  BER: 1728  UBLK: 287  Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
cycle: 88  d_time: 0.020 s  Sig: 50886  SNR: 61166  BER: 1728  UBLK: 62  Stat: 0x03 [SIG CARR ]

Current parameters:
     Frequency:  746000.000 kHz
     Inversion:  ON
     Symbol rate:  6.900000 MSym/s
     FEC:  none
     Modulation:  QAM 64

Card is just bought newly:

00:06.0 0480: 1131:7146 (rev 01)
	Subsystem: 13c2:101a
	Flags: bus master, medium devsel, latency 32, IRQ 17
	Memory at fbeffc00 (32-bit, non-prefetchable) [size=512]
	Kernel driver in use: budget_ci dvb

Other (tested favourite) channels are tuned in fine.

No network problems for this transponder reported in cable provider's support forums.

Anyone got the chips datasheet or a hint what to tweak in the tda827xa_dvbc[] for this frequency?

{ .lomax = 802000000, .svco = 2, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1}, ?

thx,
Y
tom




^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: dvb-c: TT C-1501: tda827x.c: Cannot hold lock at 746 MHz
  2010-10-02 14:43 dvb-c: TT C-1501: tda827x.c: Cannot hold lock at 746 MHz thomas schorpp
@ 2010-10-02 15:19 ` thomas schorpp
  2010-10-02 16:54   ` thomas schorpp
  0 siblings, 1 reply; 3+ messages in thread
From: thomas schorpp @ 2010-10-02 15:19 UTC (permalink / raw)
  To: linux-media

Am 02.10.2010 16:43, schrieb thomas schorpp:
> Hello,
>
> Klaas patch is not complete:
> http://article.gmane.org/gmane.linux.drivers.dvb/47571
>
> I found a hole at 746MHz with 2.6.34.0 kernel and DE provider kabelbw.de,
> Picture fragments and audio bursts only:
>
> Oct 2 15:53:03 tom1 vdr: [16380] receiver on device 1 thread ended (pid=16268, tid=16380)
> Oct 2 15:53:03 tom1 kernel: tda827x: tda827xa_set_params:
> Oct 2 15:53:03 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
> Oct 2 15:53:03 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
> Oct 2 15:53:04 tom1 vdr: [16462] setting audio track to 1 (0)
> Oct 2 15:53:04 tom1 kernel: tda827x: tda827xa_set_params:
> Oct 2 15:53:04 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
> Oct 2 15:53:04 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
> Oct 2 15:53:04 tom1 vdr: [16279] frontend 0 lost lock on channel 496, tp 746
> Oct 2 15:53:04 tom1 vdr: [16279] frontend 0 regained lock on channel 496, tp 746
> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params:
> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
> Oct 2 15:53:05 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
> Oct 2 15:53:05 tom1 vdr: [16279] frontend 0 lost lock on channel 496, tp 746
> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params:
> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
> Oct 2 15:53:05 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params:
> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
> Oct 2 15:53:05 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
> Oct 2 15:53:06 tom1 vdr: [16279] frontend 0 regained lock on channel 496, tp 746
> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params:
> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
> Oct 2 15:53:06 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params:
> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
> Oct 2 15:53:06 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params:
> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
> Oct 2 15:53:06 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
> Oct 2 15:53:06 tom1 vdr: [16268] switching to channel 494
>
> cycle: 78 d_time: 0.004 s Sig: 51657 SNR: 43690 BER: 1728 UBLK: 55 Stat: 0x00 []
> cycle: 79 d_time: 0.004 s Sig: 52428 SNR: 60395 BER: 1728 UBLK: 57 Stat: 0x03 [SIG CARR ]
> cycle: 80 d_time: 0.004 s Sig: 50886 SNR: 46517 BER: 1728 UBLK: 95 Stat: 0x00 []
> cycle: 81 d_time: 0.007 s Sig: 52428 SNR: 44461 BER: 1728 UBLK: 54 Stat: 0x03 [SIG CARR ]
> cycle: 82 d_time: 0.003 s Sig: 51657 SNR: 61423 BER: 1728 UBLK: 5 Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
> cycle: 83 d_time: 0.237 s Sig: 40092 SNR: 47288 BER: 1048575 UBLK: 66 Stat: 0x00 []
> cycle: 84 d_time: 0.005 s Sig: 56283 SNR: 45232 BER: 1728 UBLK: 113 Stat: 0x00 []
> cycle: 85 d_time: 0.006 s Sig: 53199 SNR: 46774 BER: 1728 UBLK: 136 Stat: 0x00 []
> cycle: 86 d_time: 0.008 s Sig: 50115 SNR: 44975 BER: 1728 UBLK: 55 Stat: 0x00 []
> cycle: 87 d_time: 0.004 s Sig: 53199 SNR: 53970 BER: 1728 UBLK: 287 Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
> cycle: 88 d_time: 0.020 s Sig: 50886 SNR: 61166 BER: 1728 UBLK: 62 Stat: 0x03 [SIG CARR ]
>
> Current parameters:
> Frequency: 746000.000 kHz
> Inversion: ON
> Symbol rate: 6.900000 MSym/s
> FEC: none
> Modulation: QAM 64
>
> Card is just bought newly:
>
> 00:06.0 0480: 1131:7146 (rev 01)
> Subsystem: 13c2:101a
> Flags: bus master, medium devsel, latency 32, IRQ 17
> Memory at fbeffc00 (32-bit, non-prefetchable) [size=512]
> Kernel driver in use: budget_ci dvb
>
> Other (tested favourite) channels are tuned in fine.
>
> No network problems for this transponder reported in cable provider's support forums.
>
> Anyone got the chips datasheet or a hint what to tweak in the tda827xa_dvbc[] for this frequency?
>
> { .lomax = 802000000, .svco = 2, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1}, ?
>
> thx,
> Y
> tom
>
>
>

Hm, this gets complicated, tuning is fine at 722+754MHz but not on 746MHz,
this is within the same control segment

	{ .lomax = 720000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
	{ .lomax = 802000000, .svco = 2, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1},


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: dvb-c: TT C-1501: tda827x.c: Cannot hold lock at 746 MHz
  2010-10-02 15:19 ` thomas schorpp
@ 2010-10-02 16:54   ` thomas schorpp
  0 siblings, 0 replies; 3+ messages in thread
From: thomas schorpp @ 2010-10-02 16:54 UTC (permalink / raw)
  To: linux-media

Am 02.10.2010 17:19, schrieb thomas schorpp:
> Am 02.10.2010 16:43, schrieb thomas schorpp:
>> Hello,
>>
>> Klaas patch is not complete:
>> http://article.gmane.org/gmane.linux.drivers.dvb/47571
>>
>> I found a hole at 746MHz with 2.6.34.0 kernel and DE provider kabelbw.de,
>> Picture fragments and audio bursts only:
>>
>> Oct 2 15:53:03 tom1 vdr: [16380] receiver on device 1 thread ended (pid=16268, tid=16380)
>> Oct 2 15:53:03 tom1 kernel: tda827x: tda827xa_set_params:
>> Oct 2 15:53:03 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
>> Oct 2 15:53:03 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
>> Oct 2 15:53:04 tom1 vdr: [16462] setting audio track to 1 (0)
>> Oct 2 15:53:04 tom1 kernel: tda827x: tda827xa_set_params:
>> Oct 2 15:53:04 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
>> Oct 2 15:53:04 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
>> Oct 2 15:53:04 tom1 vdr: [16279] frontend 0 lost lock on channel 496, tp 746
>> Oct 2 15:53:04 tom1 vdr: [16279] frontend 0 regained lock on channel 496, tp 746
>> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params:
>> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
>> Oct 2 15:53:05 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
>> Oct 2 15:53:05 tom1 vdr: [16279] frontend 0 lost lock on channel 496, tp 746
>> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params:
>> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
>> Oct 2 15:53:05 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
>> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params:
>> Oct 2 15:53:05 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
>> Oct 2 15:53:05 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
>> Oct 2 15:53:06 tom1 vdr: [16279] frontend 0 regained lock on channel 496, tp 746
>> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params:
>> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
>> Oct 2 15:53:06 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
>> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params:
>> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
>> Oct 2 15:53:06 tom1 kernel: tda827x: tda8275a AGC2 gain is: 5
>> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params:
>> Oct 2 15:53:06 tom1 kernel: tda827x: tda827xa_set_params select tda827xa_dvbc
>> Oct 2 15:53:06 tom1 kernel: tda827x: tda8275a AGC2 gain is: 4
>> Oct 2 15:53:06 tom1 vdr: [16268] switching to channel 494
>>
>> cycle: 78 d_time: 0.004 s Sig: 51657 SNR: 43690 BER: 1728 UBLK: 55 Stat: 0x00 []
>> cycle: 79 d_time: 0.004 s Sig: 52428 SNR: 60395 BER: 1728 UBLK: 57 Stat: 0x03 [SIG CARR ]
>> cycle: 80 d_time: 0.004 s Sig: 50886 SNR: 46517 BER: 1728 UBLK: 95 Stat: 0x00 []
>> cycle: 81 d_time: 0.007 s Sig: 52428 SNR: 44461 BER: 1728 UBLK: 54 Stat: 0x03 [SIG CARR ]
>> cycle: 82 d_time: 0.003 s Sig: 51657 SNR: 61423 BER: 1728 UBLK: 5 Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
>> cycle: 83 d_time: 0.237 s Sig: 40092 SNR: 47288 BER: 1048575 UBLK: 66 Stat: 0x00 []
>> cycle: 84 d_time: 0.005 s Sig: 56283 SNR: 45232 BER: 1728 UBLK: 113 Stat: 0x00 []
>> cycle: 85 d_time: 0.006 s Sig: 53199 SNR: 46774 BER: 1728 UBLK: 136 Stat: 0x00 []
>> cycle: 86 d_time: 0.008 s Sig: 50115 SNR: 44975 BER: 1728 UBLK: 55 Stat: 0x00 []
>> cycle: 87 d_time: 0.004 s Sig: 53199 SNR: 53970 BER: 1728 UBLK: 287 Stat: 0x1f [SIG CARR VIT SYNC LOCK ]
>> cycle: 88 d_time: 0.020 s Sig: 50886 SNR: 61166 BER: 1728 UBLK: 62 Stat: 0x03 [SIG CARR ]
>>
>> Current parameters:
>> Frequency: 746000.000 kHz
>> Inversion: ON
>> Symbol rate: 6.900000 MSym/s
>> FEC: none
>> Modulation: QAM 64
>>
>> Card is just bought newly:
>>
>> 00:06.0 0480: 1131:7146 (rev 01)
>> Subsystem: 13c2:101a
>> Flags: bus master, medium devsel, latency 32, IRQ 17
>> Memory at fbeffc00 (32-bit, non-prefetchable) [size=512]
>> Kernel driver in use: budget_ci dvb
>>
>> Other (tested favourite) channels are tuned in fine.
>>
>> No network problems for this transponder reported in cable provider's support forums.
>>
>> Anyone got the chips datasheet or a hint what to tweak in the tda827xa_dvbc[] for this frequency?
>>
>> { .lomax = 802000000, .svco = 2, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1}, ?
>>
>> thx,
>> Y
>> tom
>>
>>
>>
>
> Hm, this gets complicated, tuning is fine at 722+754MHz but not on 746MHz,
> this is within the same control segment
>
> { .lomax = 720000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
> { .lomax = 802000000, .svco = 2, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1},
>

Tweaking those parameters doesn't change anything.

Fixed. Bad IEC Connectors. Avoid Philips coaxial cable products or TT Tuner connectors :-/


^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2010-10-02 16:54 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2010-10-02 14:43 dvb-c: TT C-1501: tda827x.c: Cannot hold lock at 746 MHz thomas schorpp
2010-10-02 15:19 ` thomas schorpp
2010-10-02 16:54   ` thomas schorpp

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