[linux-dvb] TT 3200 locking on 8PSK channels fail

Meysam Hariri meysam.hariri at gmail.com
Tue Jun 17 23:41:32 CEST 2008

On Wed, Jun 18, 2008 at 1:46 AM, Ales Jurik <ajurik at quick.cz> wrote:

> On Tuesday 17 of June 2008, Meysam Hariri wrote:
> > After successfull compilation of multiproto drivers and dvb-utils with
> > patched szap on linux kernel, locking works great on dvb-s2
> > channels with QPSK modulation but no chance on 8PSK. the patched szap and
> > the unpached version also lock on dvb-s channels but i need to run szap
> > multiple times until i get lock.on an 8PSK channel with FEC 9/10 locking
> > fails totally and i could never get lock. any suggestions?
> >
> > Regards,
> Hi,
> your problem seems to correspond with problem in this thread:
> http://www.linuxtv.org/pipermail/linux-dvb/2008-May/026020.html.
> But I'm able to get without problem lock on some channels DVB-S2, 8PSK and
> FEC2/3 (SkyItalia from 13.0E) but not on channels with higher FEC.
> I've tried only on FEC 3/4 - which channels with FEC 9/10 did you tested?
> Regards,
> Ales
> Hi,

I'm trying to lock on 21.5E 11449 MHz s/r 30000 , FEC 9/10 and with 8PSK
modulation (DVB-IP) .
i've increased/decreased the Freq by 4-10 MHz increments and also the S/R.
not any combination helped getting lock on the channel.
I've no problem getting lock on this frequency using factory drivers on
Windows XP, so it's a software issue.
the other S2 channels on the same position do lock without any change on
freq/symrate but they are QPSK and have lower FECs.

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