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EnoSat's Photo EnoSat 14 Jan 2023

Now the transponder is still in ShortFrame but the FEC has changed to 3/4. Si2166D still nothing, but BCM45308 already has a signal.
RollOff shows different.

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<transponder frequency="11199660" symbol_rate="34286000" polarization="1" fec_inner="0" system="1" modulation="0"/><!-- short/t/s -->

Attached File  satellites.xml   289.41KB   2 downloads


Edited by EnoSat, 14 January 2023 - 11:09.
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WanWizard's Photo WanWizard 14 Jan 2023

tp134 is in our satelltes.xml as

<transponder frequency="11200000" symbol_rate="34285000" polarization="1" fec_inner="0" system="1" modulation="4" />

different modulation?

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stephan94's Photo stephan94 15 Jan 2023

It is no longer DVB-S2X
the TBS 6983 ( only DVB-S2) card finds and reads this transponder now without any problem.
Only VLC still has problems to read the stream

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EnoSat's Photo EnoSat 15 Jan 2023

tp134 is in our satelltes.xml as

<transponder frequency="11200000" symbol_rate="34285000" polarization="1" fec_inner="0" system="1" modulation="4" />

different modulation?

need test on 45308X if work on AUTO or 16APSK

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EnoSat's Photo EnoSat 15 Jan 2023

It is no longer DVB-S2X
the TBS 6983 ( only DVB-S2) card finds and reads this transponder now without any problem.
Only VLC still has problems to read the stream

maybe HW bug on TBS69xx with ShortFrame
TBS5390 send correct stream

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EnoSat's Photo EnoSat 15 Jan 2023

nietoré zdroje uvádzajú:

16APSK FEC-3/4 

 

It is no longer DVB-S2X

PS: some sources state
16APSK FEC-3/4 FECFRAME-Normal as DVB-S2
and
16APSK FEC-3/4 FECFRAME-Short as DVB-S2X

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EnoSat's Photo EnoSat 17 Aug 2023

Hello, what is the maximum data throughput of the AVL6261C?
DVB-S2/16APSK SR-31429 FEC-4/5 tests have started on Astra1 19 East, which gives a transponder data flow of 100 Mbit/s. The minimum C/N for this mod is 11 dB.

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Edited by EnoSat, 17 August 2023 - 14:48.
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Old Satterhand's Photo Old Satterhand 17 Aug 2023

If you cannot find the correct specification of that chip, I would suggest doing some stress test with a STB that contains such a device.

 

I tested a 10 minutes full TS recording from a TBS 5580, tuned to that transponder (11817v31430) and the recorded content was free of errors.

 

I hope this helps.

 

 

Details of the test.

Recording made by EBSpro. Analysis by TS-Doctor 3.2

 

The TS contains 4 video streams with 4 audiotracks each (3x Mpg, 1 x Dolby E.

The program content is the same but with differend encodings and bitrates.

 

Track 1         min bitrate 4,2  max 19,6    average 14-17 Mbit

Track 1, 2, 3            min 3,8   max 11,9    average 9-10 Mbit

 

Hence the payload is about 45% of the transponder capacity, the rest is stuffing.

 

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EnoSat's Photo EnoSat 17 Aug 2023

Another box on the same antenna - https://forums.openp...t/#entry1559724

That's why I asked about the maximum throughput, i don't care about the bitrate of the program.

Some boxes can process such high data after correcting the drivers or firmware


Edited by EnoSat, 17 August 2023 - 22:11.
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