[linux-dvb] How to solve the TT-S2-3200 tuning problems?

[linux-dvb] How to solve the TT-S2-3200 tuning problems?

[manu]

	Hi all,
there are several threads about TT-3200 not being able to lock on 
different channels depending on FEC/symbol rate/modulation.
Now what kind of experimentation could provide enough data to solve 
them? For example would it be possible that some knowledgeable guy here 
posts:
-datasheets/programming guide for the tuner/demod if no NDA...
-post the source of a prog that could gather data when tuning to a 
given transponder.
-or anything else that this/these persons think would improve the 
understanding of the problems.
HTH
Bye
Manu, who would like to watch the final of the euro cup in HD ;-)



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Re: [linux-dvb] How to solve the TT-S2-3200 tuning problems?

[Ales Jurik]

Hi,

I've tried to see where the problem is for some time. My opinions and results 
of some debugging work is included.

I'm ready to cooperate in debugging of this driver.

BR,

Ales

On Saturday 21 of June 2008, manu wrote:
> 	Hi all,
> there are several threads about TT-3200 not being able to lock on
> different channels depending on FEC/symbol rate/modulation.
> Now what kind of experimentation could provide enough data to solve
> them? For example would it be possible that some knowledgeable guy here
> posts:
> -datasheets/programming guide for the tuner/demod if no NDA...

Yes, such documents are under NDA, I don't have access to it.

> -post the source of a prog that could gather data when tuning to a
> given transponder.
> -or anything else that this/these persons think would improve the
> understanding of the problems.
> HTH
> Bye
> Manu, who would like to watch the final of the euro cup in HD ;-)

The point from which I've checked the driver is file stb0899_priv.h (enum 
stb0899_modcod). There are defined values for all possible 
FEC/modulation combinations. We could see that 8PSK modulations have values 
from 12 to 17 (for debugging). 

But no initial values are used for 8PSK modulation for registers csm1 to csm4 
as the stb0899_dvbs2_init_csm is called only for QPSK ( condition is and-ed 
with INRANGE(STB0899_QPSK_23, modcod, STB0899_QPSK_910) ).

I'm not sure if this is the reason of problems, but I could get lock (very 
unstable - lock is active for few minutes, than for minute or so disappeared 
and so long) after few minutes staying tuned on some 8PSK channels. 

Maybe if set some registers (don't know if csm1-csm4 is enough) to initial 
values depending on FEC/modulation it would be possible to get lock within 
seconds like it is with QPSK.

In the driver there are also some pieces of code depended to FEC/modulation, 
but only STB0899_QPSK_XXX is used for such pieces of code. Not possible to 
find STB0899_8PSK_XXX depending code. Isn't it necessary? Or such code is 
missing and the casual lock is done by hw automation? 

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[linux-dvb] Re : How to solve the TT-S2-3200 tuning problems?

[manu]

Le 21.06.2008 05:14:46, Ales Jurik a écrit :
> Hi,
> 
> I've tried to see where the problem is for some time. My opinions and
> results 
> of some debugging work is included.
> 
> I'm ready to cooperate in debugging of this driver.
> 
> BR,
> 
> Ales
> 
> On Saturday 21 of June 2008, manu wrote:
> > 	Hi all,
> > there are several threads about TT-3200 not being able to lock on
> > different channels depending on FEC/symbol rate/modulation.
> > Now what kind of experimentation could provide enough data to solve
> > them? For example would it be possible that some knowledgeable guy
> here
> > posts:
> > -datasheets/programming guide for the tuner/demod if no NDA...
> 
> Yes, such documents are under NDA, I don't have access to it.
> 
> > -post the source of a prog that could gather data when tuning to a
> > given transponder.
> > -or anything else that this/these persons think would improve the
> > understanding of the problems.
> > HTH
> > Bye
> > Manu, who would like to watch the final of the euro cup in HD ;-)
> 
> The point from which I've checked the driver is file stb0899_priv.h
> (enum 
> stb0899_modcod). There are defined values for all possible 
> FEC/modulation combinations. We could see that 8PSK modulations have
> values 
> from 12 to 17 (for debugging). 
> 
> But no initial values are used for 8PSK modulation for registers csm1
> to csm4 
> as the stb0899_dvbs2_init_csm is called only for QPSK ( condition is
> and-ed 
> with INRANGE(STB0899_QPSK_23, modcod, STB0899_QPSK_910) ).
> 
> I'm not sure if this is the reason of problems, but I could get lock
> (very 
> unstable - lock is active for few minutes, than for minute or so
> disappeared 
> and so long) after few minutes staying tuned on some 8PSK channels. 
> 
> Maybe if set some registers (don't know if csm1-csm4 is enough) to
> initial 
> values depending on FEC/modulation it would be possible to get lock
> within 
> seconds like it is with QPSK.
> 
> In the driver there are also some pieces of code depended to
> FEC/modulation, 
> but only STB0899_QPSK_XXX is used for such pieces of code. Not
> possible to 
> find STB0899_8PSK_XXX depending code. Isn't it necessary? Or such 
> code
> is 
> missing and the casual lock is done by hw automation? 

One more datapoint: I have one transponder which has only HD Channels 
on it; the only difference with the other transponders (which are 
working great using TT 3200) is the FEC (and the fact that it is MPEG4, 
but that changes nothing for getting the lock); symbol rate and 
modulation are the same. But it does not lock. Here is the dmesg of a 
simpledvbtune session: one with a success on another transponder, and 
then a failure on this transponder.
I'd like to know where to put some printks or tweak the code to be able 
to debug this, if someone with the know-how could explain a bit. I can 
definitely do some coding, but without data it is kind of hard.
HTH
Bye
Manu


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[linux-dvb] Re : Re : How to solve the TT-S2-3200 tuning problems?

[manu]

Le 28.06.2008 08:44:12, manu a écrit :
> Le 21.06.2008 05:14:46, Ales Jurik a écrit :
> > Hi,
> > 
> > I've tried to see where the problem is for some time. My opinions
> and
> > results 
> > of some debugging work is included.
> > 
> > I'm ready to cooperate in debugging of this driver.
> > 
> > BR,
> > 
> > Ales
> > 
> > On Saturday 21 of June 2008, manu wrote:
> > > 	Hi all,
> > > there are several threads about TT-3200 not being able to lock on
> > > different channels depending on FEC/symbol rate/modulation.
> > > Now what kind of experimentation could provide enough data to
> solve
> > > them? For example would it be possible that some knowledgeable 
> guy
> > here
> > > posts:
> > > -datasheets/programming guide for the tuner/demod if no NDA...
> > 
> > Yes, such documents are under NDA, I don't have access to it.
> > 
> > > -post the source of a prog that could gather data when tuning to 
> a
> > > given transponder.
> > > -or anything else that this/these persons think would improve the
> > > understanding of the problems.
> > > HTH
> > > Bye
> > > Manu, who would like to watch the final of the euro cup in HD ;-)
> > 
> > The point from which I've checked the driver is file stb0899_priv.h
> > (enum 
> > stb0899_modcod). There are defined values for all possible 
> > FEC/modulation combinations. We could see that 8PSK modulations 
> have
> > values 
> > from 12 to 17 (for debugging). 
> > 
> > But no initial values are used for 8PSK modulation for registers
> csm1
> > to csm4 
> > as the stb0899_dvbs2_init_csm is called only for QPSK ( condition 
> is
> > and-ed 
> > with INRANGE(STB0899_QPSK_23, modcod, STB0899_QPSK_910) ).
> > 
> > I'm not sure if this is the reason of problems, but I could get 
> lock
> > (very 
> > unstable - lock is active for few minutes, than for minute or so
> > disappeared 
> > and so long) after few minutes staying tuned on some 8PSK channels. 
> > 
> > Maybe if set some registers (don't know if csm1-csm4 is enough) to
> > initial 
> > values depending on FEC/modulation it would be possible to get lock
> > within 
> > seconds like it is with QPSK.
> > 
> > In the driver there are also some pieces of code depended to
> > FEC/modulation, 
> > but only STB0899_QPSK_XXX is used for such pieces of code. Not
> > possible to 
> > find STB0899_8PSK_XXX depending code. Isn't it necessary? Or such 
> > code
> > is 
> > missing and the casual lock is done by hw automation? 
> 
> One more datapoint: I have one transponder which has only HD Channels 
> on it; the only difference with the other transponders (which are 
> working great using TT 3200) is the FEC (and the fact that it is
> MPEG4, 
> but that changes nothing for getting the lock); symbol rate and 
> modulation are the same. But it does not lock. Here is the dmesg of a 
> simpledvbtune session: one with a success on another transponder, and 
> then a failure on this transponder.
> I'd like to know where to put some printks or tweak the code to be
> able 
> to debug this, if someone with the know-how could explain a bit. I 
> can
> 
> definitely do some coding, but without data it is kind of hard.
> HTH
> Bye

just to precise a bit more: all transponders are DVB-S with QPSK 
modulation (at least this is what is advertised in the dvb tables).
BYe
Manu


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Re: [linux-dvb] Re : How to solve the TT-S2-3200 tuning problems?

[Daniel]

manu <eallaud <at> yahoo.fr> writes:

> 
> One more datapoint: I have one transponder which has only HD Channels 
> on it; the only difference with the other transponders (which are 
> working great using TT 3200) is the FEC (and the fact that it is MPEG4, 
> but that changes nothing for getting the lock); symbol rate and 
> modulation are the same. But it does not lock. Here is the dmesg of a 
> simpledvbtune session: one with a success on another transponder, and 
> then a failure on this transponder.
> I'd like to know where to put some printks or tweak the code to be able 
> to debug this, if someone with the know-how could explain a bit. I can 
> definitely do some coding, but without data it is kind of hard.
> HTH
> Bye
> Manu
> 


What FEC is it on the transponder you can't lock? 
I have one transponder witch is DVB-S with QPSK mod, FEC 7/8 and SR 28000 that
has one mpeg4 channel (Eurosport HD) and I get lock on that one all the time,
could it be becuse there are regular channels on that transponder too?

//Daniel


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Re: [linux-dvb] Re : Re : How to solve the TT-S2-3200 tuning problems?

[Ales Jurik]

On Saturday 28 of June 2008, manu wrote:
> Le 28.06.2008 08:44:12, manu a écrit :
>
> just to precise a bit more: all transponders are DVB-S with QPSK
> modulation (at least this is what is advertised in the dvb tables).
> BYe
> Manu
>
Hi,

this is interesting - I don't have problem with DVB-S/QPSK channels except for 
some channels I'm not able to tune directly when changing sat (on diseqc 
switch) - it is necessary to tune first to another transponder and then to 
this problematic one.

Could you be so kind and specify more channels you have problems with?

BR,

Ales


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[linux-dvb] Re : Re : How to solve the TT-S2-3200 tuning problems?

[manu]

Le 28.06.2008 14:15:37, Daniel a écrit :
> manu <eallaud <at> yahoo.fr> writes:
> 
> > 
> > One more datapoint: I have one transponder which has only HD
> Channels 
> > on it; the only difference with the other transponders (which are 
> > working great using TT 3200) is the FEC (and the fact that it is
> MPEG4, 
> > but that changes nothing for getting the lock); symbol rate and 
> > modulation are the same. But it does not lock. Here is the dmesg of
> a 
> > simpledvbtune session: one with a success on another transponder,
> and 
> > then a failure on this transponder.
> > I'd like to know where to put some printks or tweak the code to be
> able 
> > to debug this, if someone with the know-how could explain a bit. I
> can 
> > definitely do some coding, but without data it is kind of hard.
> > HTH
> > Bye
> > Manu
> > 
> 
> 
> What FEC is it on the transponder you can't lock? 
> I have one transponder witch is DVB-S with QPSK mod, FEC 7/8 and SR
> 28000 that
> has one mpeg4 channel (Eurosport HD) and I get lock on that one all
> the time,
> could it be becuse there are regular channels on that transponder 
> too?

AFAIK there are only HD channels on this transponder. FEC is 5/6 
instead of the more common 3/4 for all other transponders. And that's 
the only difference. I do not understand why this could be a problem 
for tuning to the transponder.
And I tried to tune to frequencies between 11485 and 11505 MHz, whereas 
the freq is advertised as 11495MHz. With no luck: not a single lock.
For the other transponders lock is fast and reliabke.
One more thing, the symbol rate is the same across all transponders, 
30MBauds.
Do you have an idea about solving this, or at least how to get useful 
info.
Bye
Manu


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[linux-dvb] Re : Re : Re : How to solve the TT-S2-3200 tuning problems?

[manu]

Le 28.06.2008 16:23:39, Ales Jurik a écrit :
> On Saturday 28 of June 2008, manu wrote:
> > Le 28.06.2008 08:44:12, manu a écrit :
> >
> > just to precise a bit more: all transponders are DVB-S with QPSK
> > modulation (at least this is what is advertised in the dvb tables).
> > BYe
> > Manu
> >
> Hi,
> 
> this is interesting - I don't have problem with DVB-S/QPSK channels
> except for 
> some channels I'm not able to tune directly when changing sat (on
> diseqc 
> switch) - it is necessary to tune first to another transponder and
> then to 
> this problematic one.
> 
> Could you be so kind and specify more channels you have problems 
> with?

Thats the thing: every other transponder works great, that is: 11093, 
11555, 11635, 11675 MHz, 30MBauds, DVB-S, QPSK, FEC 3/4.
The only problematic one: 11495MHz, FEC 5/6 and every other 
characteristics are the same as the working ones. I checked in the dvb 
tables from the transport stream.
Have you got any idea?
Thanks
Manu



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Re: [linux-dvb] Re : Re : How to solve the TT-S2-3200 tuning problems?

[Daniel]

manu <eallaud <at> yahoo.fr> writes:

> 
> AFAIK there are only HD channels on this transponder. FEC is 5/6 
> instead of the more common 3/4 for all other transponders. And that's 
> the only difference. I do not understand why this could be a problem 
> for tuning to the transponder.
> And I tried to tune to frequencies between 11485 and 11505 MHz, whereas 
> the freq is advertised as 11495MHz. With no luck: not a single lock.
> For the other transponders lock is fast and reliabke.
> One more thing, the symbol rate is the same across all transponders, 
> 30MBauds.
> Do you have an idea about solving this, or at least how to get useful 
> info.
> Bye
> Manu
> 


Sad enough I have no clue how to solve this. I have this problem too with with a
couple of transponders that just holds mpeg4 channels. But they are DVB-S2 with
8PSK mod, FEC 3/4 and symbolrate 25000 and 30000.
12128, 12015, 11434 and 11421 on Thor 5 1.0W are the ones that are problematic
for me.

//Daniel


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Re: [linux-dvb] Re : Re : How to solve the TT-S2-3200 tuning problems?

[Daniel]

http://www.gossamer-threads.com/lists/engine?do=post_view_flat;post=336053;
page=2;sb=post_latest_reply;so=ASC;mh=25;list=mythtv

In this thread there is a small patch posted. I am not into coding so it 
dosen't say to much to me. But for those of you who are into coding might
get some ideas. Maybe could it be a step in the right direction to solve 
our problems maybe?


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Re: [linux-dvb] Re : Re : How to solve the TT-S2-3200 tuning problems?

[Mika Laitio]

> http://www.gossamer-threads.com/lists/engine?do=post_view_flat;post=336053;
> page=2;sb=post_latest_reply;so=ASC;mh=25;list=mythtv
>
> In this thread there is a small patch posted. I am not into coding so it
> dosen't say to much to me. But for those of you who are into coding might
> get some ideas. Maybe could it be a step in the right direction to solve
> our problems maybe?

Has with tuning problems with TT-S2-3200 tried the patch suggested in 
the link?

Mika


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Re: [linux-dvb] Re : Re : How to solve the TT-S2-3200 tuning problems?

[Mike Booth]

>
> In this thread there is a small patch posted. I am not into coding so it
> dosen't say to much to me. But for those of you who are into coding might
> get some ideas. Maybe could it be a step in the right direction to solve
> our problems maybe?

Has with tuning problems with TT-S2-3200 tried the patch suggested in 
the link?

Mika


Can't access the site.....can you?
well can access the sit but not the patch



Mike

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Re: [linux-dvb] Re : Re : How to solve the TT-S2-3200 tuning problems?

[Ales Jurik]

On Wednesday 09 of July 2008, Mika Laitio wrote:
> > http://www.gossamer-threads.com/lists/engine?do=post_view_flat;post=33605
> >3; page=2;sb=post_latest_reply;so=ASC;mh=25;list=mythtv
> >
> > In this thread there is a small patch posted. I am not into coding so it
> > dosen't say to much to me. But for those of you who are into coding might
> > get some ideas. Maybe could it be a step in the right direction to solve
> > our problems maybe?
>
> Has with tuning problems with TT-S2-3200 tried the patch suggested in
> the link?
>
> Mika

Yes, but without big success - the patch is not applicable to my version of 
multiproto (last from hg) - structure stb0899_internal doesn't have member 
sub_range.

But BTW the patch is for dvb-s (QPSK) part of tuning procedure, but (for 
example) my problems are with dvb-s2 and 8PSK.

Ales

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Re: [linux-dvb] Re : Re : How to solve the TT-S2-3200 tuning problems?

[Goga777]

try please updated multiproto with some fixes 
http://jusst.de/hg/multiproto/summary

> > http://www.gossamer-threads.com/lists/engine?do=post_view_flat;post=336053;
> > page=2;sb=post_latest_reply;so=ASC;mh=25;list=mythtv
> >
> > In this thread there is a small patch posted. I am not into coding so it
> > dosen't say to much to me. But for those of you who are into coding might
> > get some ideas. Maybe could it be a step in the right direction to solve
> > our problems maybe?
> 
> Has with tuning problems with TT-S2-3200 tried the patch suggested in 
> the link?
> 


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Re: [linux-dvb] Re : Re : How to solve the TT-S2-3200 tuning problems?

[Ales Jurik]

On Thursday 10 of July 2008, Goga777 wrote:
> try please updated multiproto with some fixes
> http://jusst.de/hg/multiproto/summary

Hi,

thanks for your hint.

I've just tried. My opinion:
- little more slowly when switching 
- still no lock possible at some transponders when changing satellite
- still no lock possible at some DVB-S2 8PSK channels (or after few minutes 
and only for few seconds)

BR,

Ales


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