Blindscan need fix decapsulation T2-MI for some transponders

[frankviana]

Hi, I did several tests last week and need fix some things. Some recent issues, posted here:

https://www.linuxsat-support.com/thread/147657-edision-os-mini-4k/

*No lock low symbol rate;

*Not found T2-MI channels on Eutelsat 8W (symbol rate 60.000), but found on blindscan.

*Not found T2-MI channels on Eutelsat 3E (second multistream). Found only "data" channel.

Maybe fix drivers?

Here sample .ts file to try to fix T2-MI decapsulation.

https://www.mediafire.com/file/py6z2a3tsab02yn/8.0W_4153%252C415_L_60000_%25282020-10-07_13.45.34%2529_dump.ts/file

Thx

Frank

[opensource-edision]

The AVL6261 demodulator has a stable operating range of 1M-55M.

AVL6261A_product_brief

It cannot be guaranteed if it is a 1M symbol rate or lower. And it probably works on special cases about 55M symbol rate or over. (eg. DVB-S2 QPSK and 8PSK w/ Normal FECFRAME, DVB-S)

The Availink example driver is set to 1M-55M. but we allow 1M-60M for users who want to use it in special cases. Would you try to check the TPs if it is within the specification range?

We cannot modify the demodulator firmware. so if possible, we will report your results to Availink development team.

Thanks,

[frankviana]

If you see, symbol rate 60.000 lock very good. The problem is when decapsulation (drivers or plugins) and not tuner lock.

Another transponder (symbol rate 33900), lock too and again same decapsulation problem only on SECOND multistream. FIRST multistream lock and find channels.

Thanks.

[frankviana]

If you see here (own Edision blindscan)

Symbol rate: 60.000; FEC 2/3, , DVB-S2,, 8PSK

Then "equal" NORMAL FECFRAME symbol rate.

Waiting fix drivers.

Thanks.

[opensource-edision]

Thanks for your details.

Today, we released improved driver and the latest demodulator firmware.

Maybe we can use the new driver and firmware after few days from the distributor.

Check the following an kernel log:

avl6261: Firmware Version 1.8.27679 (1.8.18)

Thanks,

[frankviana]

Wow! Thanks a lot...

But if you see, the problem is "decapsulation" signal, not lock...

And for locked signals, need fix decapsulation too (example below 60.000 symbol rates, Eutelsat 3B symbol rate 33900 - second multistream. This example appear "data channel" only.)

If you need more tests, contact me.

[frankviana]

Thanks for your details.

Today, we released improved driver and the latest demodulator firmware.

Maybe we can use the new driver and firmware after few days from the distributor.

Check the following an kernel log:

avl6261: Firmware Version 1.8.27679 (1.8.18)

Thanks,

Where I see this kernel log? Here, on Github?

[frankviana]

Now, fix partially symbol rate 60.000. Found the 60 channels (4143 L 60.000), but I need repeat scan more 5 ~10 times to found the 7 MIS transponders.

Selecting only bindscan 4100 to 4200:

Found all 60 channels (7 MIS).

The only FTA appear "freezing" and a lot of picture colors... but signal OK (I think is wrong FEC parameters)

OS MINI 4K:

WhatsApp.Video.2021-03-29.at.21.22.11.mp4

TBS CARD:

Found wrong T2MI PLP PID

Edision: PID 4096

PC CARD TBS: PID 64

Thanks.

[frankviana]

Now, tests using MIS (Eutelsat 3.0 E)

Transponder: 4063 L 33900, found all channels (blindscan and preset satellites.xml)

PID 4096 PLP 1

but

Transponder: 4099 L 33900, found only DATA channels:

Not found on blindscan too and when try to scan manually (preset satellites.xml)

PID 4097 - PLP 0

Here full ts to fix transponder 4099 L 33900

https://www.mediafire.com/file/bfxvwxis48syt66/3.1E_4098,900_L_33900_(2021-03-30+17.04.55)_dump.ts/file

[frankviana]

Now, tests using low symbol rate.

Some satellites we have lock, but no tune channels; others, no signal.

Starone C3 (75ºW):

4045 V 651: No signal

3887 H 740

Starone C4 (84ºW)

4077 V 800

Intelsat 45ºW

3834 V 480: No signal

dvbsnoop: feinfo

[EnoSat]

Waiting fix drivers.
Thanks.

EDISION OS mio+ 4K use AVL6261C (is it planned to produce an option with AVL6261A?)