[linux-dvb] A-link DTU no tuning

Dag Nygren dag at newtech.fi
Wed Nov 7 09:58:41 CET 2007


Following up myself a bit:

> Just bought myself such a USB DVB tuner and
> it installs fine in Linus 2.6.23.1, but when trying to
> use scandvb with it I only get "tuning failed!!!"
> No errors in the logs though. It just doesn't tune.

I found this mail:
http://linuxtv.org/pipermail/linux-dvb/2007-January/015518.html

and adding that extra 
  zl10353_single_write(fe, 0x5A, 0x0C);
does give me  occasional (3/4) tuning on Mux A here in Espoo.
Mux B will never tune though and the rest C and D?
will work occasionally, about 1 out of 3 times.

The  tune file for the muxes is:

# automatically generated from http://www.digitv.fi/sivu.asp?path=1;8224;9519
# T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy
T 562000000 8MHz 2/3 NONE QAM64 8k 1/8 NONE
T 658000000 8MHz 2/3 NONE QAM64 8k 1/8 NONE
T 674000000 8MHz 2/3 NONE QAM64 8k 1/8 NONE
T 730000000 8MHz 2/3 NONE QAM64 8k 1/8 NONE

Additional info:
Adding a -5 to the scandvb command doesn't seem to give
me any improvement even if the scan out put indicates a filter
timeout.:

 % scandvb -5 -a 1 /home/dag/fi-Espoo 
scanning /home/dag/fi-Espoo
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
initial transponder 562000000 0 2 9 3 1 2 0
initial transponder 658000000 0 2 9 3 1 2 0
initial transponder 674000000 0 2 9 3 1 2 0
initial transponder 730000000 0 2 9 3 1 2 0
>>> tune to: 562000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_AUTO:QAM_64:T
RANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE
Network Name 'Digita Finland'
WARNING: filter timeout pid 0x0011
>>> tune to: 658000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_64:TR
ANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE
WARNING: >>> tuning failed!!!
>>> tune to: 658000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_2_3:QAM_64:TR
ANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE (tuning failed)
WARNING: >>> tuning failed!!!



Best
Dag







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