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Feature #4075

Add DVB-S2X Support

Added by Thomas Göttgens almost 5 years ago. Updated over 4 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
DVB
Target version:
-
Start date:
2016-11-11
Due date:
% Done:

0%

Estimated time:

Description

Hi,

i just added a TBS6522 tuner card which is capable of tuning to DVB-S2X transponders. This requires new types of mudulation, rolloff and FEC values, but is essentially the same DVB-S2 standard. Can this be added withiut much hassle? I'd be willing to grant developer access to the box with the tuner card.

Current test Transponder is:

ASTRA Astra 1M 19.2° E 23 11553 H SR: 25500, FEC:11/20 (S2X - QPSK)

History

#1

Updated by piotr galek almost 5 years ago

+1

#2

Updated by Jaroslav Kysela almost 5 years ago

I am afraid, but it seems that S2X is not supported in the linux dvbapi.

https://git.linuxtv.org/media_tree.git/tree/include/uapi/linux/dvb/frontend.h

#3

Updated by Thomas Göttgens almost 5 years ago

Jaroslav Kysela wrote:

I am afraid, but it seems that S2X is not supported in the linux dvbapi.

https://git.linuxtv.org/media_tree.git/tree/include/uapi/linux/dvb/frontend.h

Since TBS maintains their own media tree for their opensource driver ( https://github.com/tbsdtv/ ) I was under the impression that one would include a DVB-S2X patch for the dvb-api. On looking closer at this i think i was wrong there. Sorry to bother you.

#4

Updated by piotr galek almost 5 years ago

i will today look closer also i saw there is many new modulation

DVB-S2X
QPSK: 13/45, 9/20, 11/20
2_4_2_APSK: 100/180, 104/180
8PSK: 23/36, 25/36, 13/18
8_8_APSK: 90/180, 96/180, 100/180, 18/30, 20/30
16APSK: 26/45, 3/5, 28/45, 23/36, 25/36, 13/18, 140/180, 154/180
4_12_16rb_APSK: 2/3
4_8_4_16_APSK: 128/180, 132/180, 140/180

maybe somewhere is some patch

#5

Updated by saen acro over 4 years ago

Any movement on DVB-S2X scene?
Some STB come with tuners with support new standard
OCTAGON SF4008 for example

#6

Updated by Thomas Göttgens over 4 years ago

I can only speak for the TBS6522 tuner i have in my box. If you use the modified media tree that works with this card, TVHeadend can use DVB-S2X Transponders if you set the parameters to 'DVB-S2' and modulation, FEC and so on to 'auto'. TVHeadend does not support the actual values (neither does DVB-API in Linux), but the autodetect of the driver works fine.

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