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Thread: TBS 5925 Blind Scan Plugin

  1. #1

    TBS 5925 Blind Scan Plugin

    Thanks very much for adding the TBS cards to the image. I see now that progress has been made using the internal tuner blindscan plugin. I will be testing blindscan for the TBS 5925 on the Vu+ Duo2 and the Vu+ Zero receivers.

    I have found a couple of issues in blindscan.py that I would like to point out.
    Line#600 = if self.getNimSocket(self.feid) < 0 and tunername not in ("TBS5925", "DVBS2BOX"):
    Line#630 = if tunername in ("TBS5925", "DVBS2BOX"):

    I find the naming of the TBS 5925 to be wrong in these two lines. For me, it works with the following:

    600 = if self.getNimSocket(self.feid) < 0 and tunername not in ("TBS-5925", "DVBS2BOX"):
    630 = if tunername in ("TBS-5925", "DVBS2BOX"):

    Changing those two lines allowed the Ku blkindscan to work some for me, but the found frequencies are off. Will try to see what is causing that and see if there is an easy way to add the C band scan.

    My knowledge in python is very limited, and I have no formal training in that programming language. I respect the professional work you guys do, but thought I would point out these issues. EB

  2. #2

    athoik's Avatar
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    Απ: TBS 5925 Blind Scan Plugin

    Hi,

    Thanks for pointing the typo, i will fix it.

    If you also know the correct parameters to blindscan-s2, would be nice.

    You can experiment from telnet calling blindscan-s2. Make sure that tuner is not occupied, i've seen that blindscan-s2 works only when tuner is free.
    Member SatDreamGr Projects

    Wavefield T90: 0.8W - 1.9E - 4.8E - 13E - 16E - 19.2E - 23E - 26E - 33E - 39E - 42E - 45E on EMP Centauri DiseqC 16/1
    Unamed: 13E Quattro - 9E Quattro on IKUSI MS-0916

  3. #3

    Re: TBS 5925 Blind Scan Plugin

    I will continue testing different parameters for blindscan.

    My lnb is universal(9750/10600). Changing the l.o. to 9750 makes the Found transponder frequency correct, and channels are scanned in (see below).
    cmd += " -l 9750" #10600
    else:
    cmd += " -l 9750" #9750

    It makes no sense to change it like that and have it work. All the transponders on this satellite I am scanning at 87W will be above 11700 MHz for the ku band.

  4. #4

    athoik's Avatar
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    Απ: TBS 5925 Blind Scan Plugin

    I guess we need to use parameter -2 for high band.

    Code:
            -2        : enable 22KHz tone (default OFF)
    That will pass the required tone on, for high band.
    Member SatDreamGr Projects

    Wavefield T90: 0.8W - 1.9E - 4.8E - 13E - 16E - 19.2E - 23E - 26E - 33E - 39E - 42E - 45E on EMP Centauri DiseqC 16/1
    Unamed: 13E Quattro - 9E Quattro on IKUSI MS-0916

  5. #5

    Re: TBS 5925 Blind Scan Plugin

    -2 Works!

    cmd = "blindscan-s2 -b -t 4 -2 -r 1000 -s %d -e %d" % (temp_start_int_freq, temp_end_int_freq)


    The above cmd line returns a good blindscan, but it takes around 1 hour to complete 100%. Some channels are duplicated. Will continue testing different cmd lines.
    A TBS 5925 Test blindscan was done on 87W while a channel on 87W was being watched. Everything seemed to work ok for me. Did not see any problems with the tuner being in use at the time of blindscan.

    I have noticed a remote control issue.
    The TBS 5925 seems to try commands it gets from the Vu+ remote. Moving the TBS 5925 Device Away from the Vu+ receiver has reduced lock-ups and other unexplained problems.

  6. #6

    athoik's Avatar
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    Απ: TBS 5925 Blind Scan Plugin

    Hi,

    The -2 should be used with high band only, i will update the plugin with -2 on high band.

    I show that you changed the stepping to 4MHz and symbol rate to lower values than default ones, do they produce better results? The default stepping is 20MHz.
    Member SatDreamGr Projects

    Wavefield T90: 0.8W - 1.9E - 4.8E - 13E - 16E - 19.2E - 23E - 26E - 33E - 39E - 42E - 45E on EMP Centauri DiseqC 16/1
    Unamed: 13E Quattro - 9E Quattro on IKUSI MS-0916

  7. #7

    Re: TBS 5925 Blind Scan Plugin

    cmd = "blindscan-s2 -b -t 2 -2 -r 1000 -s %d -e %d" % (temp_start_int_freq, temp_end_int_freq)

    The cmd line above seems to work the best, and seemed to find everything that EBSpro would find. The problem is it took 2 hours for 100% complete. It is pretty common to find transponders 2MHz apart here in the U.S. The frequency step has to be set low for North America or transponders/channels may be missed.

    Skinny transponders or transponders with low symbol rates are another common item in the U.S. Radio Channels can be found on transponders with symbol rates of 800. Channels that produce a picture can be found on transponders with symbol rates around 1000, but the picture quality is usually low.

  8. #8

    athoik's Avatar
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    Απ: TBS 5925 Blind Scan Plugin

    It is logical that if you lower the stepping to take extra time, why it takes so much can't tell, just make sure the tuner is used only for blindscan during that time.

    The -2 parameter should be used only with high band.

    If you have only high band you need to change parameters and scan only 11,7 GHz - 12,75 GHz area.

    The reason I am putting 10600 in LOF when high band is because of the following:

    UNIVERSAL means a 9750/10600 LOF controlled by 22khz
    STANDARD means a 10750 LOF
    The blindscan plugin seems to support only Universal LNB and not standard ones.

    Here is how the parameters that will be changed in blindscan.

    Code:
                            if self.is_c_band_scan:
                                    cmd = " -l 5150" # needs testing
                            elif tab_hilow[band]:
                                    cmd += " -l 10600 -2" # on high band enable 22KHz tone
                            else:
                                    cmd += " -l 9750"
    Just like you we just experiment
    Member SatDreamGr Projects

    Wavefield T90: 0.8W - 1.9E - 4.8E - 13E - 16E - 19.2E - 23E - 26E - 33E - 39E - 42E - 45E on EMP Centauri DiseqC 16/1
    Unamed: 13E Quattro - 9E Quattro on IKUSI MS-0916

  9. #9

    Re: Απ: TBS 5925 Blind Scan Plugin

    Standard lnb(10750 l.o.) is common here because not many satellites transmit anything below 11700 MHz in the Ku band. The enigma2 blindscan was only designed for universal lnb. I have found a way to add the Standard 10750 l.o. to the blindscan. The Circular lnb setting is set to 10750 in NimManager, so we use that setting, and tell the blindscan plugin to do the correct math when it "sees" the Circular lnb setting in use. This is similar to the C band addon in blindscan. Will be glad to share this 10750 blindscan plugin to anyone that wants it.

  10. #10

    Re: Απ: TBS 5925 Blind Scan Plugin

    if self.is_c_band_scan:
    cmd = " -l 5150" # needs testing

    OK....Will test that in a minute.

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