high bitrate

  • Hi,
    why in DM500HD no problem scan highrate transponders (etc. 76 Mbps 23E/12725H) and in DM7020HD big problem . In DM7020HD lock ok but result scan -> 0 services , in DM500HD lock ok and result scan -> 2 services.


    PS:
    66 Mbps on 23 E ok , 68 Mbps on 1W & 13E ok , 73 Mbps on 10E/11305V ok , 74 Mbps on 24W/11595V & 21E/11345H nok , 76 Mbps on 23E nok , 77 Mbps on 27W/11495V nok

    ROVER AtomLight STC+
    Gibertini OP100L /85E-53W/
    WaveFrontier T90 /39E-36E-31E-28E-26E-23E-19E-16E-13E-9E-7E-5E-1W-4W/
    Dreambox DM900UHD/7020HD/500HD , TBS-5925 , TBS-5520SE , TBS-5220 , Coolstream Zee2 , Dr.HD F16

    Edited 9 times, last by EnoSat ().

  • Same situation with DM8000. I thought, that adding the new tuner bcm4505 to the C tuner slot will solve the BBC transponder problem on Intelsat 907 at 27.5W, but it didn't. Dreambox is now able to lock the TP 11495V 44100 9/10 DVB-S2/QPSK (SNR 12.5dB), but that's all. The transponder looks empty for it. It canť find any services. Even dvbsnoop with pidscan command can't find any PIDs - no PAT, no SDT, no PMT, etc. I don't even know if it is due to some hardware limitation of bcm7400 or it is just a dvb modules software problem? I have tried several image versions (OE 1.6, 0E 2.0) and I am using the latest dvb modules from 11.7.2012.



    Another problem, I am observing, is with some SCPC channels using very low symbol rates, like 477ksps or 334ksps. The bcm4505 tuner can lock both of them, but when I am trying to scan those services, dreambox will always find nothing. I have tried this several times with same result. Transponder is locked, but also in this case dvbsnoop can't find any PIDs.


    Any ideas?

  • Same situation with DM8000. I thought, that adding the new tuner bcm4505 to the C tuner slot will solve the BBC transponder problem on Intelsat 907 at 27.5W, but it didn't. Dreambox is now able to lock the TP 11495V 44100 9/10 DVB-S2/QPSK (SNR 12.5dB), but that's all. The transponder looks empty for it. It canť find any services. Even dvbsnoop with pidscan command can't find any PIDs - no PAT, no SDT, no PMT, etc. I don't even know if it is due to some hardware limitation of bcm7400 or it is just a dvb modules software problem? I have tried several image versions (OE 1.6, 0E 2.0) and I am using the latest dvb modules from 11.7.2012.


    Thats ok and no problem of DMM. This Transponder is not DVB compliant. The channels on that transponder can only be added manually to your servicelist.

  • Yeah, I can add them manually, but they will still not work! Because dream can't decode the PID information from the TS. It canť see any PIDs and there is no matter if you create the setting manually - it won't help, I've try it. How would you explain, that DM500HD and DM800SE can scan those channels without problems? What is the difference between those receivers and DM8000 (+bcm4505) or DM7020HD?

  • And today, I have been told, that also the old DM800 with old tuner (using OE 2.0 image) handles to scan the 76Mbps data transponder 12725H 30000 8/9 8PSK on 23E correctly. :wacko: Another words, it will find and show the Astra2Connect service.
    So the "condition" to successful scan of TP using high bitrate looks something like this: "Just use whatever single tuner slot Dreambox and throw away some expensive DM8000HD or DM7020HD" :(
    How the hell is this possible? ?( What makes DM7020HD and DM8000HD unable to process high bitrate TPs?

  • Yes, its maybe a problem with the high bitrate. These two boxes are just working different then the other ones. ;)


    try this:
    dvbsnoop -s pidscan -pd 9 (in one-tuner HW)
    dvbsnoop -frontend /dev/dvb/adapter0/frontend1 -dvr /dev/dvb/adapter0/dvr3 -demux /dev/dvb/adapter0/demux3 -s pidscan -pd 9 (in first tuner multi-tuner HW)


    lock 23E/12725H on DM500HD too DM7020HD

    Images

    ROVER AtomLight STC+
    Gibertini OP100L /85E-53W/
    WaveFrontier T90 /39E-36E-31E-28E-26E-23E-19E-16E-13E-9E-7E-5E-1W-4W/
    Dreambox DM900UHD/7020HD/500HD , TBS-5925 , TBS-5520SE , TBS-5220 , Coolstream Zee2 , Dr.HD F16

    Edited once, last by EnoSat ().

  • ROVER AtomLight STC+
    Gibertini OP100L /85E-53W/
    WaveFrontier T90 /39E-36E-31E-28E-26E-23E-19E-16E-13E-9E-7E-5E-1W-4W/
    Dreambox DM900UHD/7020HD/500HD , TBS-5925 , TBS-5520SE , TBS-5220 , Coolstream Zee2 , Dr.HD F16

  • ROVER AtomLight STC+
    Gibertini OP100L /85E-53W/
    WaveFrontier T90 /39E-36E-31E-28E-26E-23E-19E-16E-13E-9E-7E-5E-1W-4W/
    Dreambox DM900UHD/7020HD/500HD , TBS-5925 , TBS-5520SE , TBS-5220 , Coolstream Zee2 , Dr.HD F16