Dvb-s2 qpsk

[Jaggy]

There have been reports that we can (& have been able to for months & months) get Channel Nine from Aus on Optis D1, refer Lyngsat image attached.... but what is needed in the tuning ini for QPSK (if it's possible at all)?? I have tried all the options as in the D1-S2 test ini by just changing it to 12381 but it finds zilch.

[sub]

I just tried here, and it did lock a signal. I was able to find an H.264 channel called 'L-Bird 1' from the 'Nine Network Australia', which is playing some comedy I'm not familiar with.

2014-05-17 14:47:40.638 [DEBUG][1] locked=1, present=1, strength=-650, quality=94 (took 15ms to check)
2014-05-17 14:47:41.058 [DEBUG][1] Calling GetQuality()
2014-05-17 14:47:42.488 [INFO][1] Metadata:
<sdt>
<tsid>1185</tsid>
<onid>4114</onid>
<service>
<service_id>0x4a1</service_id>
<service_type>0x19</service_type>
<service_provider_name>Nine Network Australia</service_provider_name>
<service_name>L-Bird 1</service_name>
<running_status>4</running_status>
</service>
</sdt>

2014-05-17 14:47:42.488 [DEBUG][1] - found 'L-Bird 1'

I used:

[SATTYPE]
1=160.0
2=OPTUS D1 FTA (160.0E)

[DVB]
0=5
1=12456,H,22500,0
2=12483,H,22500,0
3=12644,H,22500,0
4=12707,H,22500,0
5=12381,V,3750,23,S2,QPSK

That last tuning line will only work on devices that can auto detect pilot and roll-off values, like the Hauppauge HVR-4400/5500.

[Jaggy]

Which of course my HVR-4000 won't

[sub]

You'll still be able to get it, but you'll either need to find what rolloff and pilot values they're using, or each possible every combination.

It's early, and my brain isn't yet up to working out the possible bitmask values, so just try:

5=12381,V,3750,23,0
5=12381,V,3750,23,1
5=12381,V,3750,23,2
....
5=12381,V,3750,23,255

[Jaggy]

Yeah I understand the feeling, it was late last night when I posted & my brain was closing down for the night....

from your log
<service_type>0x19</service_type>
would that be the pilot & rolloff value??

if so from this message from the past

If the FEC is supposed to be 2/3, then use "23" in the tuning string.

The last number is a set of flags, only applicable to DVB-S2 tuning.

//Bit 0-1: Modulation (0 = Auto, 1 = QPSK, 2 = 8PSK, 3 = 16QAM)
//Bit 2: Modulation System (0 = DVB-S, 1 = DVB-S2)
//Bit 3-4: Roll-Off (0 = 0.35, 1 = 0.25, 2 = 0.20, 3 = reserved)
//Bit 5-6: Spectral Inversion (0 = undefined, 1 = auto, 2 = normal, 3 = inverted)
//Bit 7: Pilot Symbols (0 = off, 1 = on).

69 (decimal) = 0x45 (hex) = 01000101 (binary), so starting at the least significant bit (right side working left):
01 = QPSK
1 = DVB-S2
00 = 0.35 rolloff
10 = normal spectral inversion
0 = pilot off.

using the online calculator 0x19 = 25

[sub]

Yeah I understand the feeling, it was late last night when I posted & my brain was closing down for the night....

from your log
<service_type>0x19</service_type>
would that be the pilot & rolloff value??

No - the pilot and roll off values are not in the log. The app doesn't know what they are to log them.

0x19 is just saying it's an H.264 channel.

[Jaggy]

bugger.... I should have known it wouldn't be that easy

[sub]

Just use excel or something to whip up a quick ini with values 0-255, then hit scan and come back 10 minutes later and it should have found the values for you.

[Jaggy]

err.... well I didn't expect that at all.... after making a big scan list it turned out that

12381,V,3750,23,1

works for it...... now if I had just done a small list first & tried it..... oh well on the positive side I now have a long scan list that I can use if I need it in the future

[sub]

err.... well I didn't expect that at all.... after making a big scan list it turned out that

12381,V,3750,23,1

works for it...... now if I had just done a small list first & tried it..... oh well on the positive side I now have a long scan list that I can use if I need it in the future

Great.