DVB-S2X HotBIrd 13e - SETTINGS

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setka
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DVB-S2X HotBIrd 13e - SETTINGS

#1

Beitrag von setka »

Hi
As far you know there is a DVB S2X test on the HotBird. The problem is the setting provided by the Eutelsat are unable to use them on OpenATV. I've tested OpenATV 71 and 7.2 on Octagon SF4008 with S2X head support and i cant set FEC 32/45 for 16APSK up. That option doesn't exist. Is any chance to add full suport to the OpenATV software for s2x feauture?
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#2

Beitrag von Doctor Who »

Fab Four Music-------------- RT1 Synthwave

kein Support per PN (Fragen bitte ins Forum)
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#3

Beitrag von jack_zab »

Eutelsat Hot Bird 13C (13°E)
tp. 134 (11,200 GHz, pol. V, SR: 34290, FEC: 32/45; DVB-S2X / 16APSK)
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#4

Beitrag von Doctor Who »

Ah. You mean this :
[ATTACH=CONFIG]88857[/ATTACH]

i´ve also nothing to receive on this Transponder . Maybe it is only a temporarily transmission . :dntknw:
Or you asked in a special Sat-DX Forum
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#5

Beitrag von setka »

You won't receive anything because you are not able to set proper settings such as FEC for a specific modulation -16APSK in this case. That transmission is working 100% for DVB sat cards, digital sat finders, and some cheap sat receivers such as GT Media based on Android with dvb s2x head. The question is why they can but we not. see the screenshot attached
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#6

Beitrag von jack_zab »

FEDC 32/45 cannot be selected in Enigma2
Fix needed
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#7

Beitrag von setka »

Not only FEC, but for dvbs2x you cant select anything besides modulation 16APSKA or 32APSK. More options need to be available to select from. The best example is roll-off. We can select min 0.20 but that broadcast above using roll-off: 0.05. We can't select that as well. That extremely low value is also not available.
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#8

Beitrag von dhwz »

Because in DVB-S2X mode most parameters are autodetected you don't need to enter modulation or FEC
The DVB API doesn't support these FEC values, you've to select auto for modulation and FEC.
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#9

Beitrag von leo123 »

Auto eingestellt, und trotzdem nicht gefunden.
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#10

Beitrag von dhwz »

I didn't say that this transponder works, but every other DVB-S2X transponder so far has worked.

It is not because of the lack of selection options.
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#11

Beitrag von hammu »

no Signal

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#12

Beitrag von leo123 »

hm, ok. also so geht es nicht.
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#13

Beitrag von dhwz »

leo123 hat geschrieben:hm, ok. also so geht es nicht.
[ATTACH=CONFIG]88861[/ATTACH]
Yes as said this specific transponder doesn't work, I don't know why. But it's not the lack of missing DVB-S2X support.
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#14

Beitrag von leo123 »

Das es nicht geht, wissen wir. Nun fehlt nur noch die Lösung. ;)
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#15

Beitrag von setka »

dhwz hat geschrieben:I didn't say that this transponder works, but every other DVB-S2X transponder so far has worked.

It is not because of the lack of selection options.


See my previous post where i attached a screenshot from yesterday. That proves that the transporter works 100%. The screenshot has been taken on the GTMedia device. other prove eutelsat-promo-tv-crazyscan-transedit — ImgBB DVB Sat Card screenshot. This is not OpenATV issue but we are unable to receive this signal on zgemma,octagon even Vu receivers with their own software and other enigma2 boxes. I repeat my question... why cheap devices such as Gtmedia or even a TV such as LG is able to receive that kind of signal without any issues but more expensive and advanced receivers don't???? Who knows the answer?

one more question..
What about roll-off? That broadcast use 0.05 we cant set it lower than 0.20 maybe that's the problem?

My thoughts:
That's not a stupid question if you consider the situation when for example in the near future television broadcaster will decide to switch to DVB s2x standard with a weird setting, normal users will be not able to receive the signal and be forced to buy new hardware. Our actual hardware will be useless even if we've got s2x support.

You mentioned about another DVB s2x transponder probably on Astra 19e a few years ago. That transponder had default settings such as fez 1/2, sr rate 25500(find on youtube) that's why there was no problem with it until now when Eutelsat decided to use more than default settings. That's situations show DVB S2X on Enigma 2 receivers IS NOT FULLY SUPPORTED.
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#16

Beitrag von dhwz »

No as said nowadays tuners are autodetecting the signal, they don't need modulation, FEC, inversion, roll-off etc.
They do find transponders even if you just tell them frequency and polarization and a symbolrate (even this isn't mandatory).

And no I'm not talking about some tests years ago, there are transponders regularly for feeding using DVB-S2X even with uncommon FEC values, which are found on blindscan.
And there are no standard FECs as said nowadays demodulators from Broadcom or Silabs don't need these parameters. They are always blindscanning while tuning.

I don't know what's different on this transponder and I had no time to check it now. The only thing I can tell it's not even seen on blindscan.
But it's definitely no issue related to Enigma2.
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#17

Beitrag von EnoSat »

It's a hardware problem that more tuners Short Frame doesn't support
I don't know if anyone can solve this problem because it digs deep into the drivers
In addition, new tuners mostly work in the mode AUTO and it doesn't matter what FEC and MODULATION is entered

M88RS6060 no problem
Der Dateianhang 1_0_1_1_1_1_82ABC0_0_0_0_20230108123957.jpg existiert nicht mehr.


Si2166 It even has problem with long frame on DVB-S2X/ACM-VCM (AVL6261 works much better with this signal)
https://youtu.be/IXKuBJ0MS5U
https://youtu.be/Jnk8FrRwF4s
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#18

Beitrag von dhwz »

@EnoSat der Si2166, Si2169 und auch die Broadcom Demodulatoren sind nur Consumer Chipsets (also als Hardwareproblem würde ich das nicht bezeichnen, es muss damit gar nicht funktionieren).

Daher fragte ich ja vorhin ob an dem Transponder etwas nicht normal ist, denn diese Chips unterstützen nicht alle Modis das können nur deutlich teurere die für den Profibereich gedacht sind.

ACM/VCM/short frame etc. werden nur teils bzw. gar nicht unterstützt, auch alles >32APSK nicht.

Scheinbar will Eutelsat gar nicht dass den TP jeder empfangen kann sonst hätte man nicht solche Parameter gewählt.
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#19

Beitrag von kueken »

https://github.com/torvalds/linux/commit/6508a50fe84f9858e8b59b53dce3847aaeeab744

Wahrscheinlich wäre ein Weg bei einem Wille möglich.
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#20

Beitrag von EnoSat »

dhwz hat geschrieben:Daher fragte ich ja vorhin ob an dem Transponder etwas nicht normal ist, denn diese Chips unterstützen nicht alle Modis das können nur deutlich teurere die für den Profibereich gedacht sind.

looks fine
13E_1119966V.png


this is what a DVB-S2X french mux on a 33E used to look like
13E_1119966V.png
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