[linux-dvb] Measuring signal strench on TT S2-3200

SKOČDOPOLE Tomáš hoppik at centrum.cz
Wed Sep 3 10:54:07 CEST 2008


Hello,

For quick test I used getstream utility. Later I am planning to use vdr with some plugins for streaming. 

I have parabola directed to 23.5E (Astra 3A/1E). I tested two FTA programs Ocko and CT24. On second computer there was VLC running. I think parabola is directed correctly, because I have borrowed desktop receiver and there was no problem with these programs.

I tried latest drivers from Igor M. Liplianin but I have the same problems with multiproto drivers.

When I was streaming Ocko, on second computer there was good screen, but sometimes (aprox once per 30 seconds) was shortly breaking.

When I was streaming CT24, it was running only for max 10 seconds and then getstream utility stopped sending stream packets.

There is debug output from getstream utility:
2008-08-31 20:11:59.655 fe: Adapter 0 Setting up frontend tuner
2008-08-31 20:11:59.668 fe: DVB-S tone = 0
2008-08-31 20:11:59.668 fe: DVB-S voltage = 0
2008-08-31 20:11:59.668 fe: DVB-S diseqc = 0
2008-08-31 20:11:59.668 fe: DVB-S freq = 12525000
2008-08-31 20:11:59.668 fe: DVB-S lof1 = 9750000
2008-08-31 20:11:59.668 fe: DVB-S lof2 = 10600000
2008-08-31 20:11:59.668 fe: DVB-S slof = 11700000
2008-08-31 20:11:59.668 fe: DVB-S feparams.frequency = 1925000
2008-08-31 20:11:59.668 fe: DVB-S feparams.inversion = 2
2008-08-31 20:11:59.668 fe: DVB-S feparams.u.qpsk.symbol_rate = 27500000
2008-08-31 20:11:59.668 dmx: Setting filter for pid 8192 pestype 20
2008-08-31 20:11:59.816 fe: Adapter 0 Status: 0x1e (HAS_CARRIER HAS_VITERBI HAS_SYNC HAS_LOCK)

And there is configuration file:
# cat /usr/src/getstream/getstream.conf.cslink
http {
    port 8001;
};

adapter 0 {
  budget-mode 1;

    dvb-s {
        lnb {
            lof1 9750000;
            lof2 10600000;
            slof 11700000;
        };

        transponder {
            frequency 12525000;
            polarisation v;
            symbol-rate 27500000;
            diseqc 0;
        };
    };

    stream {
        name "CT24";
        input {
            pnr 8006;
        };
        output-rtp {
            remote-address 10.0.148.98;
            remote-port 3000;
        };
        sap {
                scope global;
                playgroup "testovaci sat";
                ttl 5;
        };
    };
};




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