ISDB-T Tuning

DISCUSSION Reynaldo H. Verdejo Pinochet 2 participants 3 messages Jun 24, 2010 Media (V4L/DVB)

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Reynaldo H. Verdejo Pinochet

author

2010-06-24 16:36 UTC #0 lore raw

Hi guys

I have been trying to get a siano based 1seg ISDB-T USB dongle to scan and tune under Linux to no avail. Asking around it has been brought to my attention there might be no app available that would do this successfully even with an adapter currently supported by the kernel like the one I'm using. Facing that scenario and assuming my lack of luck trying to find such an application supports that claim, I'm wondering if there is anyone reading this that might be working on writing such an application and/or in extending an existing one like 'scan' to be able to work with ISDB-T. Just to avoid duplicating the effort.

Best regards

--
Reynaldo

Alan Carvalho de Assis

2010-06-24 20:18 UTC #1 lore raw

Hi Reynaldo,

Quoted 14 lines · Reynaldo H. Verdejo Pinochet

Hi guys
I have been trying to get a siano based 1seg ISDB-T USB dongle to scan and tune under Linux to no avail. Asking around it has been brought to my attention there might be no app available that would do this successfully even with an adapter currently supported by the kernel like the one I'm using. Facing that scenario and assuming my lack of luck trying to find such an application supports that claim, I'm wondering if there is anyone reading this that might be working on writing such an application and/or in extending an existing one like 'scan' to be able to work with ISDB-T. Just to avoid duplicating the effort.

If you have all frequencies supported in your country you can the "scan" command to detected all transmitted channels.

More info:
http://acassis.wordpress.com/2009/09/18/watching-digital-tv-sbtvd-in-the-linux/

Best Regards,

Alan

Reynaldo H. Verdejo Pinochet

author

2010-06-24 20:49 UTC #2 lore raw

Hi Alan

Quoted 2 lines · Alan Carvalho de Assis

If you have all frequencies supported in your country you can the "scan" command to detected all transmitted channels.

I do have them but scan is showing no results. I'm using a homemade antenna that is giving 90-100% coverage with the windows app so I'm rather sure this is not a signal strength nor snr issue.

Here is my freqs file

T 533143000 6MHz 3/4 3/4 AUTO 2k 1/32 NONE # channel 24
T 533143000 6MHz 3/4 AUTO AUTO AUTO AUTO NONE # channel 24
T 569143000 6MHz 3/4 3/4 AUTO 2k 1/32 NONE # channel 30
T 569143000 6MHz 3/4 AUTO AUTO AUTO AUTO NONE # channel 30
T 587143000 6MHz 3/4 3/4 AUTO 2k 1/32 NONE # channel 33
T 587143000 6MHz 3/4 AUTO AUTO AUTO AUTO NONE # channel 33
T 551143000 6MHz 3/4 3/4 AUTO 2k 1/32 NONE # channel 27
T 551143000 6MHz 3/4 AUTO AUTO AUTO AUTO NONE # channel 27

(entries repeated just to try out different combinations)

Now, I know for sure there is a 1seg broadcast at 587143 KHZ , that's the one I'm getting with the windows app but scan on Linux keeps showing no results.

I'm attaching the verbose scan output (I have also tried with -5 with similar results):

Best regards

--
Reynaldo

scanning ChileISDBT
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' initial transponder 533143000 2 3 3 6 0 0 0
initial transponder 533143000 2 3 9 6 2 4 0
initial transponder 569143000 2 3 3 6 0 0 0
initial transponder 569143000 2 3 9 6 2 4 0
initial transponder 587143000 2 3 3 6 0 0 0
initial transponder 587143000 2 3 9 6 2 4 0
initial transponder 551143000 2 3 3 6 0 0 0
initial transponder 551143000 2 3 9 6 2 4 0

Quoted 11 lines

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tune to: 533143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_3_4:QAM_AUTO:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 533143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_3_4:QAM_AUTO:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE (tuning failed) tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 533143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 533143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE (tuning failed) tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 569143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_3_4:QAM_AUTO:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 569143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_3_4:QAM_AUTO:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE (tuning failed) tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 569143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 569143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE (tuning failed) tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 587143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_3_4:QAM_AUTO:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 587143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_3_4:QAM_AUTO:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE (tuning failed) tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 587143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 587143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE (tuning failed) tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 551143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_3_4:QAM_AUTO:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

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tune to: 551143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_3_4:QAM_AUTO:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE (tuning failed) tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

Quoted 11 lines
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tune to: 551143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!

Quoted 11 lines

Quoted 11 lines
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tune to: 551143000:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE (tuning failed) tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00
tuning status == 0x00

WARNING: >>> tuning failed!!!
ERROR: initial tuning failed
dumping lists (0 services)
Done.