C4HD move to 1N

[BigMoose]

Which parameters in the ini file are the rolloff and pilot?? Also is it possible to change the Modulation to 8PSK?

I have the ini file as below. I also have some TPs where the FEC is 2/3 instead of 23 so have tried both, but neither work. The 69 is whatever is found to work for other S2 TPs so perhaps this should be something different?

1=11127,V,22000,23,69

[sub]

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.

[cyberboblouth]

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.

Cheers, I used:

11127,V,22000,23,198

C4HD successfully recorded just now (The Simpsons).

[imilne]

Cheers sub! That's what we needed.

I got it working with: 11127,V,22000,23,198

(at least I think I have: it's over vnc at the moment, so I can't test sound, but the picture is there and updating, and ac3filter has bouncing bars ).

Iain

[sub]

Great.

[Pob]

Cheers, I used:
11127,V,22000,23,198
C4HD successfully recorded just now (The Simpsons).

Thank you cyberboblouth - I was able to avoid scanning by adding a line to my satelitte scan-x.cache;

Code:

T:11127,V,22000,23,198~NID:0~ONID:0~TSID:2068~P:21200~V:2305~VTYPE:H264~A:2306~L:eng(AC3)~PMT:259~TXT:2309~PCR:2305~N:>Channel 4 HD (AC3)

I seem to remember Sub confirming that the TBS devices auto-detect the DVB S2 pilot /rolloff etc, whereas the Hauppage ones do not, which probably explains why some could find it with a scan but others could not...

[sub]

I seem to remember Sub confirming that the TBS devices auto-detect the DVB S2 pilot /rolloff etc, whereas the Hauppage ones do not, which probably explains why some could find it with a scan but others could not...

Newer Hauppauge DVB-S2 devices like the HVR-4400 auto detect this stuff too. It's just the older HVR-4000 that doesnt.

[BigMoose]

Thanks guys for this

[imilne]

Newer Hauppauge DVB-S2 devices like the HVR-4400 auto detect this stuff too. It's just the older HVR-4000 that doesnt.

My 4400 didn't appear to auto detect it. I also have a slight recollection from the last time we had to jump through hoops to get C4 HD working that although my card found it (and auto detected I think), changing to the channel in Live TV was significantly faster if the full tuning details were provided to it, rather than letting it work them out.

Iain

[sub]

Yes, explicitly telling it what to use will be faster than letting the device auto detect it.

When any of these cards that auto detect the settings, they're effectively just trying all the combinations to see if any result in a signal lock.