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NS3 / NS4

Discussions techniques et évolutions technologiques de la réception par satellite en bandes Ku et C (initiés)
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hakim21
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Re: NS3 / NS4

Message par hakim21 » ven. 21 avr. 2017, 06:50

Feedsat a écrit :2 Testcard France TV Centre avec ID: ARC TRI
Arc de Triomphe ? il y a un evenement a venir ?

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Hpermux EBU
malheureusement et encore une fois un événement non pas festif mais dramatique au vu de l'actualité. :oops:
.livebox 4K orange. Satellite: Parabole FUBA85:5 Ouest (fransat),décodeur essentiel b fransat, carte pc6 fransat HISENSE H49N6600 tuner sat 4K, parabole sedea 85 cm lnb monobloc: Astra/Hotbird

Feedman
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Enregistré le : jeu. 31 déc. 2015, 18:41

Re: NS3 / NS4

Message par Feedman » ven. 19 mai 2017, 20:25

This week I had chance to test one NS2000 just updated to NS4. Unfortunately we are not able to lock new frequency of 11158H at 7 East, and we don't understand why. We selected NS4 mode and roll-off 0.2, we have SNR around 9.5 dB, so satellite signal seems good, but receiver did not lock. Similar situation on transponder at 10E, 11387V SR 34285. Do you think the box could have any fault? Or what can I check? Thank you.

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Feedsat
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Re: NS3 / NS4

Message par Feedsat » ven. 19 mai 2017, 21:32

The answer is easy, your SNR is not strong enough for a lock

You must check the antenna size (1m, 1.2m ?) the cable, the LNB, etc

I made a quick test with SNR @ 9.5dB:

Image
- Winegard 3.10m C-Band Ext
- CM PFA 3.10m C-Band
- CM 2.40m C/KU
- Laminas 1.80m C/KU
- 2 X CM 1.80m KU/Full KA/X/C
- TBS 5925 6522 6983
- DTA2137C
- NS3/NS4
- ADV-6000 S
- 2X SMR1224EL
- ASC1 - RC2000C - EGIS
- LNB Changeur
- 76.5°E <> 65°W

Feedman
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Enregistré le : jeu. 31 déc. 2015, 18:41

Re: NS3 / NS4

Message par Feedman » ven. 19 mai 2017, 22:08

Thank you Feedsat for your reply. We tried with 1.2m dish but we had not much time for antenna adjustment, and I assumed SNR was enough so I thought to a possible receiver fault. So, which SNR is needed for good NS4 lock? It seems a very high SNR compared to 8.5 dB for DVB-S2. Thanks.

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Feedsat
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Re: NS3 / NS4

Message par Feedsat » ven. 19 mai 2017, 22:09

Higher than 10.5dB as long rolloff is 0.5 but not for long time 8-[
The standard is not the only reason, this is also because of the modulation 16APSK , but some NS3 are in 32APSK and 64APSK capable...
- Winegard 3.10m C-Band Ext
- CM PFA 3.10m C-Band
- CM 2.40m C/KU
- Laminas 1.80m C/KU
- 2 X CM 1.80m KU/Full KA/X/C
- TBS 5925 6522 6983
- DTA2137C
- NS3/NS4
- ADV-6000 S
- 2X SMR1224EL
- ASC1 - RC2000C - EGIS
- LNB Changeur
- 76.5°E <> 65°W

mattmatt73
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Enregistré le : mer. 21 oct. 2009, 01:25

Re: NS3 / NS4

Message par mattmatt73 » sam. 20 mai 2017, 18:57

Feedsat a écrit :Higher than 10.5dB as long rolloff is 0.5 but not for long time 8-[
The standard is not the only reason, this is also because of the modulation 16APSK , but some NS3 are in 32APSK and 64APSK capable...
welcome in the wonderfull world of novelsat

Feedman
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Enregistré le : jeu. 31 déc. 2015, 18:41

Re: NS3 / NS4

Message par Feedman » dim. 21 mai 2017, 16:49

[quote="mattmatt73"]welcome in the wonderfull world of novelsat[/quote]
Thank you, but unfortunately that box is not mine..... bad luck. I just tested one NS2000 last year in NS3, now in NS4 that seems quite similar. So, what is the reason for using so critical modulation types? Maybe digital stream is more solid once signal is locked? Or what else? Hoping to make more test during next French Open tennis in Roland Garros starting next week. Last year it was one specific transponder for main courts, maybe at 10E if I remember. Now I found one TP at 11387V but in NS3, not NS4..... We will see in next days (if I will have chances for more test....). Thanks.

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Feedsat
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Enregistré le : ven. 21 févr. 2003, 17:48

Re: NS3 / NS4

Message par Feedsat » dim. 21 mai 2017, 17:41

Feedman a écrit :
mattmatt73 a écrit :welcome in the wonderfull world of novelsat
Thank you, but unfortunately that box is not mine..... bad luck. I just tested one NS2000 last year in NS3, now in NS4 that seems quite similar. So, what is the reason for using so critical modulation types? Maybe digital stream is more solid once signal is locked? Or what else? Hoping to make more test during next French Open tennis in Roland Garros starting next week. Last year it was one specific transponder for main courts, maybe at 10E if I remember. Now I found one TP at 11387V but in NS3, not NS4..... We will see in next days (if I will have chances for more test....). Thanks.

Yes at 10 E this is not not an hypermux, it still in ns3 , other hypermux are in ns3 enhanced, not ns4 (even if they are recognized as this type). The 1st EBU TP which will switched to NS4 is 3°W very soon...roll off 0.2 , new SR.

Greetings
- Winegard 3.10m C-Band Ext
- CM PFA 3.10m C-Band
- CM 2.40m C/KU
- Laminas 1.80m C/KU
- 2 X CM 1.80m KU/Full KA/X/C
- TBS 5925 6522 6983
- DTA2137C
- NS3/NS4
- ADV-6000 S
- 2X SMR1224EL
- ASC1 - RC2000C - EGIS
- LNB Changeur
- 76.5°E <> 65°W

Feedman
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Messages : 42
Enregistré le : jeu. 31 déc. 2015, 18:41

Re: NS3 / NS4

Message par Feedman » dim. 21 mai 2017, 18:46

Thank you very much Feedsat for your very useful information. Which SR will be used? Could you please keep updated NS3-NS4 situation in Europe? Hypermux at 3 West seems weaker than 7 and 10 East, no other NS3 mux found here with my meter. As I said, we will see where will be broadcasted Roland Garros. Thank you again.

mattmatt73
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Re: NS3 / NS4

Message par mattmatt73 » dim. 21 mai 2017, 23:36

Feedman a écrit :Thank you very much Feedsat for your very useful information. Which SR will be used? Could you please keep updated NS3-NS4 situation in Europe? Hypermux at 3 West seems weaker than 7 and 10 East, no other NS3 mux found here with my meter. As I said, we will see where will be broadcasted Roland Garros. Thank you again.
NS3/NS4 is for feed only, received by professional with few meters antenna

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