On Thu, 1 Mar 2018 10:22:10 +0100
Patrick Boettcher <patrick.boettcher@xxxxxxxxx> wrote:
> On Wed, 28 Feb 2018 11:01:23 +0100
> Klaus Schmidinger <Klaus.Schmidinger@xxxxxxx> wrote:
>
> > On 27.02.2018 17:58, Patrick Boettcher wrote:
> > > On Tue, 27 Feb 2018 16:54:35 +0100
> > > Klaus Schmidinger <Klaus.Schmidinger@xxxxxxx> wrote:
> > >
> > >> Hello Patrick,
> > >>
> > >> your scan doesn't contain the NIT, which is where the transponder
> > >> innformation is broadcast. Can you scan that, too, please?
> > >
> > > Hi Klaus,
> > >
> > > NIT attached (from another multiplex with the same symptoms).
> >
> > DVB-DescriptorTag: 90 (0x5a) [=
> > terrestrial_delivery_system_descriptor] descriptor_length: 11 (0x0b)
> > Center frequency: 0xffffffff (= 42949672.095 kHz)
> >
> > @@ -219,6 +219,8 @@
> > cDvbTransponderParameters dtp;
> > int Source = cSource::FromData(cSource::stTerr);
> > int Frequency = Frequencies[0] =
> > sd->getFrequency() * 10;
> > + Frequency = Transponder() * 1000000;//XXX
> > + dsyslog("Frequency = %08X, Transponder = %d",
> > sd->getFrequency(), Transponder());//XXX static int Bandwidths[] =
> > { 8000000, 7000000, 6000000, 5000000, 0, 0, 0, 0 };
> > dtp.SetBandwidth(Bandwidths[sd->getBandwidth()]); static int
> > Constellations[] = { QPSK, QAM_16, QAM_64, QAM_AUTO };
>
> It works. I had to have VDR recreate the channels because it was
> mixing things up with the already existing ones.
>
> As to why the frequency is set to "-10" I don't know (yet), but I
> remember it has always been like this since 2005.
Here is the explanation why the frequency field in French DVB-T shall
not be used, (cf. CSA-Profil-de-signalisationv3.4.pdf, page 30,
terrestrial_delivery_system_descriptor):
le terrestrial delivery_system_descriptor diffusés dans la NIT
correspond au cas général. En effet, la NIT ne décrit pas de façon
exhaustive le réseau actuel d’émetteurs, mais l’organisation des
services des multiplex diffusés : ainsi les fréquences des multiplex
renseignées par le paramètre centre_frequency ont une valeur fixée à
0xFFFFFFFF. Ces fréquences ne sont pas à prendre en compte
It says, grosso modo, that the NIT does not describe the network in an
exhaustive manner, but it does for services. Le field centre_frequency
contains the value 0xFFFFFFFF and is not to be taken into consideration.
--
Patrick.
_______________________________________________
vdr mailing list
vdr@xxxxxxxxxxx
https://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
