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5 posts

Wannabe Geek


Topic # 29678 14-Jan-2009 22:16
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Hi all!  I'm having problems; here is the background.

I have a DIGITVIEW 2500 set top box that I got off trademe some months ago, and connected it to an existing SKY dish with an existing Sky dual D1/C1 LNB.  It picks up freeview fine, with about 80% on both bars.

Today, I picked up a STRONG SRT4620X as it has a card reader, which I find attractive.

However, I cannot get it to tune anything except SBS and such; all NZ freeview channels are missing.  That is, I've set it to Optus D1, LNB=10.750, and the transponder at 12.483 GHz (same as the DIGITVIEW settings), but all I can get is a 90% level and about 22% quality.  If, however, I scan transponder 12.4xx GHz (not hooked up at the moment, forgot exact number) I find SBS and 7, but need an Aurora card to view them; both levels are around 80% - 90% again.

I'm stumped, any ideas what I can do to get the STRONG box up and running?  Better yet, any explanation why the DIGITVIEW unit works fine, but the STRONG one fails with the same settings?

Thanks in advance!

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6363 posts

Uber Geek
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  Reply # 189672 15-Jan-2009 07:04
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What symbol rate for the 12483 and 12456 muxs have you got, ensure its 22500ksymbol/sec.

Cyril



5 posts

Wannabe Geek


  Reply # 189684 15-Jan-2009 08:36
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Sorry, left that piece of info. out; the symbol rate is, in fact, 22.5.

Mystery remains...

The only thing I can think of is that perhaps my dish is not aimed correctly, and the one unit is less sensitive than the other?  I don't know if that even makes sense, but I'm no expert in satellite technology, and I'm running out of ideas...

Cheers!

 
 
 
 


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Ultimate Geek
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  Reply # 189686 15-Jan-2009 08:41
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SBS? Aurora? Sounds like your receiver is selecting Optus C1 not Optus D1.

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  Reply # 189687 15-Jan-2009 08:48
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Check the 22kHz is off for the D1 setup, otherwise a Sky dual throat will look at C1 (156) in the presence of 22kHz.

Cyril



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Wannabe Geek


  Reply # 189705 15-Jan-2009 09:29
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OK, here's all the settings:

Satellite:  Optus D1
LNB Type:  Single
LNB Freq.:  10.750
22kHz:  Off
DiSEqC Switch:  Off

This gives around 90% on the "level" indicator, and about 22% on the "quality" idicator (the same settings give about 85% on each indicator with the DIGITVIEW receiver).  Then, going to the "manaual scan";

Satellite:  Optus D1
Frequency: [5] 12.483 GHz
Symbol Rate:  22.5 MS/s
Polarization:  (I've tried both)
Search Type:  All Channels
Network Search:  Off

Same 90/22 levels, no channels found.  However, if I switch the frequency to [30] 12.405 GHz / 29.983 MS/s / V I find SBS and such.  But like you say, isn't that actually Optus C1?  So I think we may have found the culprit.  The question is then what can I do about it?

Cheers!


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  Reply # 189717 15-Jan-2009 10:05
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you're definitely scanning C1. As I'm not at home, I don't know what you have to do to fix it right now, but you are sending the 22KHz tone up, which means it's looking at C1.  Go back and double check your LNB configuration in the menus.



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Wannabe Geek


  Reply # 189735 15-Jan-2009 10:54
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OK, double and triple checked all the menus / settings, and it's simply not doing what it's supposed to do.  I've even gone as far as downloading the firmware from STRONG and re-flashed / reset the unit.  The problem persists.

Me suspects that I got me a knockoff that is not doing what it's supposed to do...  :(

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Ultimate Geek
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  Reply # 189816 15-Jan-2009 17:24
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Trogdor97: OK, here's all the settings:

Satellite:  Optus D1
LNB Type:  Single
LNB Freq.:  10.750
22kHz:  Off
DiSEqC Switch:  Off

This gives around 90% on the "level" indicator, and about 22% on the "quality" idicator (the same settings give about 85% on each indicator with the DIGITVIEW receiver).  Then, going to the "manaual scan";

Satellite:  Optus D1
Frequency: [5] 12.483 GHz
Symbol Rate:  22.5 MS/s
Polarization:  (I've tried both)
Search Type:  All Channels
Network Search:  Off

Same 90/22 levels, no channels found.  However, if I switch the frequency to [30] 12.405 GHz / 29.983 MS/s / V I find SBS and such.  But like you say, isn't that actually Optus C1?  So I think we may have found the culprit.  The question is then what can I do about it?

Cheers!



Why have you set the LNB type to Single when you have a Dual? Perhaps that is the issue. If it was a Single LNB the Freq would be 11300 IIRC. Perhaps changing the Setting to Dual will help, just a thought.



5 posts

Wannabe Geek


  Reply # 189858 15-Jan-2009 20:54
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OK, had a meeting of the minds over this one, and we racked it up to demonic posession.  Or something like that.  Either way, the unit has now been sent back, and there is no need for anyone else to worry about this problem, as it is a moot point.

Thanks for input though, I've learned a bunch!

Cheers!

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