[linux-dvb] Tevion DVBT-220RF

Hartmut Hackmann hartmut.hackmann at t-online.de
Tue Jan 17 22:53:26 CET 2006


Hi, Peter

Peter Hartshorn wrote:
> I set it to 5 seconds. I also put an inline 20dB antenna amp which 
> helped with detection also.
> 
> BTW, I set the card value to 82 because it has radio support. This 
> required a small hack in
> saa7134_dvb.c to include the MSI card.
> 
> Nico Sabbi wrote:
> 
>> Peter Hartshorn wrote:
>>
>>> Prepare yourself for the victory dance :)
>>>
>>> with the changes to the driver I get the following:
>>>
>>> dmesg
>>>
>>>
>> [...]
>>
>>>
>>> ./tzap -c channels.conf-dvbt-australia "7 Digital"
>>> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
>>> tuning to 177500000 Hz
>>> video pid 0x0301, audio pid 0x0302
>>> status 00 | signal 7a7a | snr ffff | ber 0001fffe | unc 00000000 |
>>> status 00 | signal 8282 | snr 9898 | ber 0001fffe | unc 00000000 |
>>> status 00 | signal 8383 | snr 8888 | ber 0001fffe | unc 00000000 |
>>> status 1f | signal 8383 | snr fafa | ber 0000813c | unc ffffffff | 
>>> FE_HAS_LOCK
>>> status 1f | signal 8282 | snr fbfb | ber 000082e2 | unc 00000000 | 
>>> FE_HAS_LOCK
>>> status 1f | signal 8383 | snr fbfb | ber 00007f7c | unc 00000000 | 
>>> FE_HAS_LOCK
>>> status 1f | signal 8282 | snr fbfb | ber 00008964 | unc 00000000 | 
>>> FE_HAS_LOCK
>>>
>>>
>>> mplayer dvb://7\ Digital
>>>
>>> this displays both the SD and HD channels. Sometimes mplayer displays 
>>> the following:
>>>
>>> Getting frontend status
>>> Not able to lock to the signal on the given frequency
>>> dvb_tune, TUNING FAILED
>>> ERROR, COULDN'T SET CHANNEL  0: DVBIN_CLOSE, close(2), fd=7, COUNT=2
>>> DVBIN_CLOSE, close(1), fd=6, COUNT=1
>>> DVBIN_CLOSE, close(0), fd=5, COUNT=0
>>> Failed to open dvb://7 Digital
>>>
>>> I think it is a timeout in mplayer being too short.
>>
>>
>>
>>
>> yes, IIRC I set it to 3 seconds. You can increase it in 
>> libmpdemux/dvb_tune.c
>>
>>
>>
>>
>>
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>>
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Tunig with the TDA10046 can be slow if the crystal is bit off and the
signal quality is not perfect. If you use an application that keeps
the DVB interface open (i.e. xine), this should only occur for the
first attempt.

So it is time to add official support for this card. I write some
instructions (AverTV 777) few days ago. Should i resend them to you?

Hartmut



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