Feature #4075

Add DVB-S2X Support

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

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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)



Updated by piotr galek about 5 years ago



Updated by Jaroslav Kysela about 5 years ago

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


Updated by Thomas Göttgens about 5 years ago

Jaroslav Kysela wrote:

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

Since TBS maintains their own media tree for their opensource driver ( ) 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.


Updated by piotr galek about 5 years ago

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

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


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


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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