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28 posts

Geek


# 215165 15-Jun-2017 10:09
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Hi all,

Just after a bit of guidance having made the decision to ditch sky and have returned their STB etc. I have a rudimentary understanding of what is needed and had previously used an Echostar box in Europe with various satellites some years back. Still have Echostar box in fact.

Trying to set up the new TV for Freeviw channels using the built in decoder. And think I have a setting wrong somewhere.

Anyhow, I still have a dish and dual LNB on roof pointed at Optus D1.

The TV is a Samsung UA32K5500ASXNZ. It has a built in satellite decoder with options for multiple satellites and fully configurable for Transponder freqs (set to 12483MHz), LNB oscillators (have tried both at 10750 and 11300MHz) and the 22500KHz tone ON.

When doing a channel scan through the setup I can select Terrestrial (I know that isn't it), Satellite or Freeview Satellite.

If I just select Satellite as the input and run the scan it detects 2 TV channels and when selecting them I can see both the SKY D3 LNB test and the OPTUS test pattern.

If I select Freeview Satellite as the input and run the scan I get no channels at all. I do see a channel list (TV1, 2 etc) but without any signal on them. I think that list is being populated from firmware ain that it expects to see that channel list from the Freeview Sattelite selection.

Of note is that when running a channel scan regardless of which of the two satellites I choose I see no signal indicated on the signal quality bar in the setup screen.

There are two coax cables from LNB. One goes to upstairs where I am and the other downstairs which is unused. Both have F type connectors of course. Are the two cables carrying different signals or is it just a parallel output.

Pretty sure I have just got a setting wrong.

Any guidance appreciated.

Cheers,
Zap


Screenshots below.

[img]https://cdn.geekzone.co.nz/imagessubs/blog3db432407d69c59aa8e84ef20dc1f9e1.jpg[/img]

[img]https://cdn.geekzone.co.nz/imagessubs/blogb83d4588e283264fad812115ed0969d8.jpg[/img]

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  # 1801346 15-Jun-2017 11:02
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Turn off the 22kHz tone. This is causing the LNB to look at the second throat (Optus C1/D3).

 

EDIT: And the LO frequency for the dual LNB will be 10750, not 11300.


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Ultimate Geek


  # 1801562 15-Jun-2017 14:35
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Samsung really should fix this - its been an issue for around two years now.

The "Auto" setting actually means "On" for the 22KHz Tone function on the LNB (which switches the LNB to the Optus D3 Satellite feed)

 

Select "Freeview Satellite" at setup then, find the manual LNB settings & turn the 22KHz tone "Off"

 

Re-scan and you should be fine. (LNB frequency will be either 10750 or 11300 depending on which is installed) 


 
 
 
 




28 posts

Geek


  # 1801592 15-Jun-2017 14:59
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Hi guys and thanks for the assistance.
Have selected the Freeview Satellite option, set the dual LNB Oscillator freqs both to 10750MHz and the 22Khz tone off. Ran scan and still no joy. The Auto tuning dialogue tells me 'Satellite signal not found'

Also tried with both set to 11300 and then with 11300 and 10750 as both upper and lower.

Still 'Satellite signal not found'

Hmm...

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Uber Geek


  # 1801634 15-Jun-2017 16:43
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illicit:[snip]

The "Auto" setting actually means "On" for the 22KHz Tone function on the LNB

 

 

Not quite. Auto is designed for a universal LNB, which are particularly uncommon in NZ. A universal LNB has 2 LOs on different frequencies (hence the space to put in 2 LOs in the settings) They also specify a switch or threshold frequency at which the LNB changes between the LOs. This means the LNB can receive a frequency range about double that of a single LO LNB, which is by far the most common in NZ. The 22kHz when set to auto is used to switch between the 2 LOs depending on what frequency you are trying to receive (above or below the threshold frequency).

 

The LNB used by Sky that the OP has is a dual throat LNB, and in contrast to a universal LNB, this will switch throats to look at a different orbital position when the 22kHz is present.

 

 

 

EDIT: Links to info on Universal and dual throat LNBs although the Sky ones use 22kHz rather than DiSEqC to change throats.


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Uber Geek


  # 1801635 15-Jun-2017 16:45
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What other options are there for LNB type?

 

You need simple, or single, or something similar to that.




28 posts

Geek


  # 1801641 15-Jun-2017 16:56
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OK, just set it to single at 10750MHz with 22500Hz Tone OFF.

 

Still nothing.

 

There are two cables from the LNB. I thought they were simply parallel outputs. Could it be that they are 1 cable for each LNB?

 

 

 

As a test I will move the TV to where the other cable ends and try that just in case.

 

 

 

Zap




28 posts

Geek


  # 1801642 15-Jun-2017 16:58
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The TV does have an option for DiSeq. It is currently off.

 

 

 

Is this correct?

 

 

 

Am I headed down the track of a new LNB?

 

 

 

Cheers,

 

Zap


 
 
 
 


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  # 1801644 15-Jun-2017 17:03
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Zapper:

 

The TV does have an option for DiSeq. It is currently off.

 

 

 

Is this correct?

 

 

 

Am I headed down the track of a new LNB?

 

 

 

Cheers,

 

Zap

 

 

Do you have a DiSEqC switch? If so, it should probably be on. Can you get at the dish to see how it is set up?

 

 





I reject your reality and substitute my own. - Adam Savage
 




28 posts

Geek


  # 1801668 15-Jun-2017 19:09
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Rikkitic do you mean a physical switch on the LNB or a software switch in TV settings?

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  # 1801670 15-Jun-2017 19:19
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While it's possible you have a DiSEqC switch, it is not something that Sky would ordinarily install or use - only someone with a need for multiple satellite reception would usually have one, so it's fairly safe to turn this off.

 

A few years ago, the LNBs installed by Sky had up to four individual outputs. They work independently of each other, so each can drive a separate tuner.

 

You also seem to be getting confused between 22kHz (a switch tone sent down the cable to the LNB) and 22500, which is the symbol rate for the Freeview transponders.

 

Set the LNB settings to 10750, single LNB, 22kHz off.

 

Can you then edit transponder settings? If so, what options is it giving you to change?




28 posts

Geek


  # 1801765 15-Jun-2017 21:17
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This is how it is set ATM and as you can see there is no signal.




Click to see full size

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Uber Geek


  # 1801767 15-Jun-2017 21:19
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Can you change the transponder settings?




28 posts

Geek


  # 1801772 15-Jun-2017 21:26
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And you're quite right about my confusing the SR and the tone to the LNB. Another fine example of a little knowledge being a dangerous thing.

While I am making a fool of myself could I just ask what is the correct Transponder frequeny for Freeview? When running the scan for Freeview and with LNB oscillator set to 10750MHz, 22KHz tone off I see the Transponder freq default is 12483MHz with Horizontal polarisation. Is this correct? I have a range of Transponder freqs I can select.

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  # 1801773 15-Jun-2017 21:30
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12483 is one of the Freeview transponders, but to lock on to it, the symbol rate, FEC and polarisation will also need to be correct, hence asking if you can change or confirm them

 

12483 horizontal 22500 3/4

 

12456 horizontal 22500 3/4

 

If you scan either of those, then something should come up.

 

Given you had the Sky D3 and Optus test channels, that means you were nearly there - they are on Optus C1/D3 which you would get if the 22kHz tone was on.




28 posts

Geek


  # 1801777 15-Jun-2017 21:38
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In the Transponder settings I can only access the frequency but cannot see SR etc.

To clarify an earlier question. The LNB has two cables from it. One goes to upstairs here and the other downstairs. Are the parallel output from both LNBs or should I move the TV downstairs to try the other cable?

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