[linux-dvb] Re: New Input file for dvbscan and new channels.conf for Bremen, Germany

[Hans-Jürgen Ficker <devnull@backmes.de>]

"Robert Schlabbach" <robert_s@gmx.net> writes:

> From: "Hans-Jürgen Ficker" <devnull@backmes.de>
>> Input file for dvbscan:
>> # DVB-T Bremen
>> # T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy
>> T 482000000 8MHz 1/2 NONE QAM16 8k 1/32 NONE
>> T 538000000 8MHz 1/2 NONE QAM16 8k 1/32 NONE
>> T 562000000 8MHz 1/2 NONE QAM16 8k 1/32 NONE
>> T 642000000 8MHz 1/2 NONE QAM16 8k 1/32 NONE
>> T 666000000 8MHz 1/2 NONE QAM16 8k 1/32 NONE
>> T 698000000 8MHz 1/2 NONE QAM16 8k 1/32 NONE
>
> I don't believe this is correct, the fec_hi and guard-interval values are
> likely wrong. These parameters would yield 12.06Mbps bandwidth. From what I
> heard, the West German DVB-T transmitters are using FEC=2/3 and
> guard-interval 1/4, yielding 13.27Mbps bandwidth.
>
> The file may work, but only because the DVB-T card detects the actual
> parameters and ignores the wrong ones from the file.
>

Probably you're right. I have a Hauppauge WinTV NOVA-T. It works with
various other settings. I got the original settings from the Windows
tool the card came with. I should have known better not to trust these
values ;-)

> If possible, please use a tool which either parses the NIT in the received
> stream, or reads back the TPS parameters from the DVB-T card to get the
> _correct_ reception parameters.
>

I tuned to the channels with tzap, and tried "dvbscan -c -n -o zap".
fec_hi and guard-interval was indeed as you guessed. What puzzles me a
bit are the values of fec_lo: It's AUTO for 'ARD digital', 1/2 for
'Niedersachsen1' and 2/3 for the rest.

The new files are attached.

# DVB-T Bremen/Unterweser
# T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy
T 482000000 8MHz 2/3 AUTO QAM16 8k 1/4 NONE
T 538000000 8MHz 2/3 1/2 QAM16 8k 1/4 NONE
T 562000000 8MHz 2/3 2/3 QAM16 8k 1/4 NONE
T 642000000 8MHz 2/3 2/3 QAM16 8k 1/4 NONE
T 666000000 8MHz 2/3 2/3 QAM16 8k 1/4 NONE
T 698000000 8MHz 2/3 2/3 QAM16 8k 1/4 NONE
arte:482000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:201:202:2
Phoenix:482000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:301:302:3
NDR RB:482000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:518:519:161
Das Erste RB:482000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:261:262:160
hr-fernsehen:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:4673:4674:65
MDR FERNSEHEN:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:4657:4658:100
NDR FS NDS:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:4625:4626:129
NDR FS HH *:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:4625:4626:130
NDR FS SH *:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:4625:4626:131
NDR FS MVP *:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:4625:4626:132
WDR Köln:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:4641:4642:262
ZDF:562000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:545:546:514
Info/3sat:562000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:561:562:515
Doku/KiKa:562000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:593:594:517
RTL Television:642000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:337:338:16405
RTL2:642000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:353:354:16406
Super RTL:642000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:369:370:16407
VOX:642000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:545:546:16418
Eurosport:666000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:577:578:16420
TERRA NOVA:666000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:609:610:16422
TELE 5:666000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:465:466:16413
SAT.1:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:385:386:16408
N24:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:225:226:16398
ProSieben:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:305:306:16403
KABEL1:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:161:162:16394
Best regards,
    Hans-Jürgen
-- 
Sig lost. Core dumped.