TBS6983

Hallo,

ich hab eine Frage zu diesem Feature der TBS 6983

Quote

Im Single-Tuner-Betrieb können bei QPSK, 8QPSK, 16APSK maximal 67,5 Msps und bei 32APSK 54 Msps erreicht werden. Im Dual-Tuner-Betrieb werden werden bei 8QPSK maximal 45 Msps, bei 16 APSK 33,7 Msps und bei 32APSK 27 Msps erreicht werden.

Ich habe am Eingang 1 die Drehanlage für das KU-Band. Wenn ich jetzt am Eingang 2 die Drehanlage für das C-Band anschließe - befindet sich da die Karte automatisch im Dual-Tuner-Betrieb oder erst wenn ich Tuner 2 gleichzeitig auch nutze ?

TBS BlindScan is 3.0.2.0
http://www.tbsdtv.com/forum/viewtopi…62&p=35008#wrap

I tried to compare with IQmonitor cards TBS6983 and TBS5925. I repeated the test several times with the same result. TBS5925 is more sensitive when the transponder is locked. C-band 43,0w vertical.

I am attaching test images under the same conditions for both cards.

Hi Peon

It's fine test with both devices. I was (and am) convinced the 6983 has better sensitivity than any device.

I will make such a test on Ku-band between the two devices. I don't know how the 5925 will work. It has been fixed once.

Did you do this test only with IQmonitor?

Quote from satesco

Hi Peon

It's fine test with both devices. I was (and am) convinced the 6983 has better sensitivity than any device.

I will make such a test on Ku-band between the two devices. I don't know how the 5925 will work. It has been fixed once.

Did you do this test only with IQmonitor?

Yes, because IQmonitor also lists signal reserves and more thorough searches.

CrazyScan is good for quick searching but not thorough.

Again, I was confirmed to have a higher sensitivity with the TBS5925 card compared to the TBS6983 card. Inputs A and B on the TBS6983 also have different sensitivities. Input A is better. I don't know if it's just my card or if it's all. The scan is done at 68.5e in the C band.

Sorry for the incorrect satellite in the pictures, I forgot to overwrite.

@Peon

What can you say about sensitivity of your TBS5925 in comparison of TBS5520SE?

Das C-Band ist zwar nicht so sehr Wetter abhängig, aber die Abweichungen sind wirklich sehr klein.

Im oberen Bereich scheint die TBS5925 etwas besser zu sein, im unteren Bereich dominiert die TBS6983.

Vergleichstest von den Tunern EINER Karte habe ich noch nie gemacht. Ich denke aber dass dies völlig normal ist, schon wegen der Serienstreuung der Bauteile.

Eine Karte mit absolut gleichen Werten wäre vermutlich unbezahlbar.

The C-band is not so dependent on the weather, but the deviations are really very small. 

In the upper area the TBS5925 seems to be a bit better, in the lower area the TBS6983 dominates. 

I have never done a comparison test of the tuners of ONE card. But I think that this is completely normal, if only because of the series spread of the components. 

A card with absolutely the same values ??would probably be priceless. 

Quote from VictorLS

@Peon

What can you say about sensitivity of your TBS5925 in comparison of TBS5520SE?

I will test and keep you informed.

Quote from femi

Das C-Band ist zwar nicht so sehr Wetter abhängig, aber die Abweichungen sind wirklich sehr klein.

Im oberen Bereich scheint die TBS5925 etwas besser zu sein, im unteren Bereich dominiert die TBS6983.

Vergleichstest von den Tunern EINER Karte habe ich noch nie gemacht. Ich denke aber dass dies völlig normal ist, schon wegen der Serienstreuung der Bauteile.

Eine Karte mit absolut gleichen Werten wäre vermutlich unbezahlbar.

The C-band is not so dependent on the weather, but the deviations are really very small. 

In the upper area the TBS5925 seems to be a bit better, in the lower area the TBS6983 dominates. 

I have never done a comparison test of the tuners of ONE card. But I think that this is completely normal, if only because of the series spread of the components. 

A card with absolutely the same values ??would probably be priceless. 

Display More

The difference is in the whole band. It is not possible to draw conclusions from one comparison that I have published.

I did the comparison on several satellites and TBS5925 was always better.

Too bad he can't handle a low SR like TBS6983.

Quote from Peon

...

Too bad he can't handle a low SR like TBS6983.

...also, too bad tbs didn't provide thermal protection. My device broke because of it. To a certain extent, I'm not sorry, because that's how 5927 USB came about, as I said.

Very good that you are doing tests with 5925, but it would be better to give it some ventilation to protect it. Even if my 5925 is repaired, that's why my tests are inconclusive

Quote from satesco

...also, too bad tbs didn't provide thermal protection. My device broke because of it. To a certain extent, I'm not sorry, because that's how 5927 USB came about, as I said.

Very good that you are doing tests with 5925, but it would be better to give it some ventilation to protect it. Even if my 5925 is repaired, that's why my tests are inconclusive

I have made a chip cooling adjustment in TBS5925. I made a thermal bridge between the chip and the card case, which contains a heatsink from a PC processor. It has been working like this for several years.

I'm sorry, but the sensitivity of the TBS5520se card cannot be compared with the 5925 and 6983.

Scanning is cycled in both BlindScan and the HR spectrum. The card has too wide a scan range at each step.

So it always picks up the same transponder and writes it with the same or shifted frequency.

TBS5520se :

TBS6983: TBS5925:

I ask the admin, if it doesn't belong here, to move it to a more appropriate topic.

Quote from Peon

I ask the admin, if it doesn't belong here, to move it to a more appropriate topic

I believe TBS card and various problem is good place where such Si2183-based cards problem was mentioned. Btw to solve it I turn of blindscan and insert SymbolRate manually or place start point far away to desired frequency in case of other near transponder(s) aren't present from that (lower or higher) side.