[linux-dvb] ITV DVB-HD in London

Mario Rossi mariofutire at googlemail.com
Sun Jan 7 19:49:44 CET 2007


Hi,

I'm trying to tune the HD signal from ITV-Channels 4-Five in Central
London I'm in Aldgate).

I have a WinTV NOVA T USB2

I can get BBC HD signal properly, while for the bouquet of ITV, I can
see some signal but no tuning.

This is the output of scan (starting from the frequency of BBC HD).

[andrea at thinkpad tmp]$ scan /opt/dvb/uk-hdtv > hdtv.channels
scanning /opt/dvb/uk-hdtv
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
initial transponder 554000000 0 2 2 3 1 0 0
>>> tune to: 554000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
0x0000 0x9044: pmt_pid 0x0258 BBC -- BBC HD1 (running)
Network Name 'Crystal Palace B'
>>> tune to: 554167000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
0x9004 0x9044: pmt_pid 0x0000 BBC -- BBC HD1 (running)
Network Name 'Crystal Palace B'
>>> tune to: 522167000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QPSK:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
WARNING: >>> tuning failed!!!
>>> tune to: 522167000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QPSK:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
(tuning failed)
WARNING: >>> tuning failed!!!
dumping lists (2 services)
Done.

If I try to tune manually to
522167000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QPSK:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE

I get

[andrea at thinkpad tmp]$ tzap "ITV HD"
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
reading channels from file '/home/andrea/.tzap/channels.conf'
tuning to 522167000 Hz
video pid 0x2000, audio pid 0x2000
status 00 | signal 632d | snr 0000 | ber 001fffff | unc 00000000 |
status 01 | signal 6310 | snr 0000 | ber 001fffff | unc 00000000 |
status 01 | signal 62fe | snr 0000 | ber 001fffff | unc 00000000 |
status 01 | signal 631e | snr 0000 | ber 001fffff | unc 00000000 |

I've tried to use autosearch as well (specifying some XXX_AUTO values)
but there is no difference.

On the same frequency I was able till a couple of months ago to get
ITV, Channel 4 and FIVE Trials.
The fact that there is "signal", does it mean anything? Or is it just too low?
BBC works with a signal level of around 0x7900.

Cheers



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