[linux-dvb] Tevion DVBT-220RF

Peter Hartshorn p3r at users.sourceforge.net
Thu Jan 19 06:12:13 CET 2006


Hello,

Hartmut Hackmann wrote:
> 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
> 
> 
> 

Yes, it would be best to resend them to me thanks. WRT the crystal being off, is this a hardware
thing, or a software thing?




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