DVBS - 22kHz tone on/off (1 Viewer)

[aucklander]

Dear Team,

older versions offer the option for the 22kHz signal to be controlled on/off, which I assume enables the control of two LNBs through a tone switch same as on a STB. I am using Media Portal 1.0.1.0 and an AverMedia Trinity hybrid card (DVBT / DVBS / Analogue)

The more recent versions of Media Portal do not have this feature anymore, and I believe this makes impossible the use of a tone switch. Is there any way to work around this? I have tried all the combinations on the DVBS scanning page with the same result everytime : no signal. The dish / LNBs arrangement is fine, as it works well wen connected to the STB I used for years. Channels off both sattelites are received well. I have tried to scan with the "Diseqc" value set to all available options, with no result.

Anyconfirmation if two LNBs can work with a tone switch and Media Portal will be highly appreciated.

 

[mm1352000]

Bump.

I'd like to know about this too. I've read scraps of info that suggest that the "band" field may have something to do with it...

 

[aucklander]

This problem is sorted out now, I should have read all the info avaialble on the net before posting...

On the DVB-S setting page (where you have the 4 fields for 4 different LNBs) there is a parameter called LNB Switch Frequency LNBSW. It works like this: when you try to tune to a transponder with a frequency higher than the value you put in there, then the "switch" is activated (the 22kHz tone is generated).

example: you have two LNBs (like I do) for the satellites Optus D2 at 152E and Optus D1 at 160 deg E (Freeview NZ).
Optus D1 (160E) - 12456H and 12483H
Optus D2 (152E) - 12734V

I set the LNBSW parameter to 12700 and the LNB for Optus D2 is connected to the "22kHz ON" connection of the switch (this is important and it is marked on the tone switch itself). It did a successful scan right away, finding all the channels I was after, on both satellites. I also changed the config files for these two satellites to remove the transponders I do not need, which shiortens the scanning time a lot but this is not critical.

The above LNBSW parameter is mentioned in a post by mcraenz, I cannot find the link right now but I feel that I should mention that as that expalined what I was doing wrong.

The "band" field has to match your type of LNB (C, Ku, etc). For the sattellites mentioned above, the band is Ku.

I hope this helps.

 

[mm1352000]

Cheers Aucklander! That makes perfect sense.

 

[frouse]

Have you tried this under MediaPortal 1.10 RC1? I am trying to configure a Avermedia Satellite Trinity card with DVB-S and Freeview NZ. I can't get any signal from Optus D1 but the connection works fine with my other satellite card, a Hauppauge Nova-S Plus.

I only have one LNB but I tried the trick of lowering the LNBSW from 20000 to 12400 but no dice.

Using LOF1 as 11300, LOF2 as 0 and scanning transponders 12483 and 12456 horizontal/22500

Any tips?

Thanks!

EDIT: solved my problem:

For anyone else with the same problem, correct settings need to be:

12456000/12483000,h, 22500 and 11300,11300,20000

 

[kiwi_fella]

Hi All,

Just a quick note to save some of you the blood lust i've been suffering.

1. All hauppauge cards at present only support Diseqc 1.0 and some of the hvr4000 wil do Diseqc 1.1 the documentation is patchy but they seem communicate in raw code format with the Diseqc switches and basically they dont like it. so avoid those cards like the plagues is the advice!!!

2. You cannot use a 22Khz switch if you have a universal LNB. These are quite popular in NZ as freeview vendors will lazily tune Optus D1 and the likes of Freeview vendors and others will happily sell these LNB's to you.

In my own setup i'm running Mediaportal with

Gospell (C Band LNB) - Intelsat 2 - BBC / Aus network (Although no EPG)
Generic (Universal LNB) - Optus D1 - Freeview NZ and we're getting overspill from Aussie SBS at present.

I have a Hauppauge HVR 3000 which has DVBS/DVB-T/ Analog onboard, they are a nightmare, stay away from them!! Also have a Hauppauge Nova-S DVB-S on another PCI card, solid card if only single cable needs, but cannot handle the diseqc i need on current switch, and because i have a universal LNB i cannot use a 22Khz switch.

DVB-T works fine, but the hybrid setup is a shocker, and i;ve never go it to work properly aside of disbling all but the dvb-t and using that.


My underlying system is

Antec Fusion case (rm 200 Remote with Mediaportal map for IMON)
AMD Athlon 64x2 Dual Core 3600
2GB Ram 1.9tb of storage

Its attached to a 42inch Panasonic plasma and IS out STB similar to Mysky.

Tomorrow i will be off to garner a new Diseqc 1.0 compatible Diseqc switch and see waht happens then.

 

[rocklander]

This problem is sorted out now, I should have read all the info avaialble on the net before posting...

On the DVB-S setting page (where you have the 4 fields for 4 different LNBs) there is a parameter called LNB Switch Frequency LNBSW. It works like this: when you try to tune to a transponder with a frequency higher than the value you put in there, then the "switch" is activated (the 22kHz tone is generated).

example: you have two LNBs (like I do) for the satellites Optus D2 at 152E and Optus D1 at 160 deg E (Freeview NZ).
Optus D1 (160E) - 12456H and 12483H
Optus D2 (152E) - 12734V

I set the LNBSW parameter to 12700 and the LNB for Optus D2 is connected to the "22kHz ON" connection of the switch (this is important and it is marked on the tone switch itself). It did a successful scan right away, finding all the channels I was after, on both satellites. I also changed the config files for these two satellites to remove the transponders I do not need, which shiortens the scanning time a lot but this is not critical.

The above LNBSW parameter is mentioned in a post by mcraenz, I cannot find the link right now but I feel that I should mention that as that expalined what I was doing wrong.

The "band" field has to match your type of LNB (C, Ku, etc). For the sattellites mentioned above, the band is Ku.

I hope this helps.

I'm not getting this. my dilemma is that I had this all working perfectly on my old computer. I bought a new one and installed the same nova-s plus cards from the old computer, and just can't get it going.. I started up my old server to get the settings from it but since the cards are no longer in it the settings have disappeared

so now I'm in a place where I can't remember what the heck I did last time to make this work.. I can pick up 'some' channels (just the SBS ones) but can't find the other ones...

my choices seem to be that the LNB is either 10750 or 11300, is that correct?

I guess my question about the LNBSW is... huh? what actual number (if any) do I put in there..?

in fact.. what numbers to I put in each of the 3 fields?
LOF1:
LOF2:
LNBSW:

I tried the settings at (Country_Specific_Informations/NewZealand/FreeviewTVE3 - MediaPortal Manual Documentation)
LOF1: 11300
LOF2:0
LNBSW:20000

but got nothing... am pretty much at hair pulling out stage....


[edit] update:
I figured out where I was going wrong.
for the record, my working settings are:
LOF1: 11300
LOF2: 0
LNBSW: 22500

reason for no signal message was that I had the cable split.
see I initially set up my computer with one nova-s plus card, tuned it all in, then bought a 2nd card so I could record two channels at once and watch a 3rd... so I picked up a signal splitter, and made up some cables so I could have each card getting an aerial cable.
there is sufficient signal to watch the already scanned channels if I split them, but insufficient to scan again.
so in order to scan on one card I had to take out the splitter and put the cable directly into the one card.. next step will be adding the 2nd card and I should be sweet again..
I prolly have an odd setup, but just in case someone else out there experiences similar issues with a similar setup, hopefully they'l lget to read this and save the headaches I've had.
[/edit]

 

[peter69]

Quick Question Kiwi_Fella

I see from your post that you are using a Hauppauge Nova-s plus.

Can this card be used with a 22khz switch if you do not have universal LNB's or is the only option to use a Diseqc.


Cheers

 

[aucklander]

Hi guys,
I did not know this thread is still running...

I recently tried to use a diseqc switch with no success (after upgrading to a 90cm dish and adding a thirt LNB). It appears that MediaPortal can use diseqc swithces but with one sort of card only, something called Technotrend, and even then with some tricks and additional third-party software... I could not find this card in NZ, and on eBay it sells for US$160 + p&p, which makes it quite pricey...

I removed the diseqc and reverted back to a tone switch (not having Freeview & SBS channels on DVB-s). The arrangement worked perfectly with my STB, so the switch is OK, it is MediaPortal unable to manage the diseqc function... for some reason... so now one of the LNBs just sits there for the pigeons to rest on it...

hopefully this issue is on a "to do" list somewhere with a developer, along with other issues like incapability to decode analogue tv from a hybrid card (like Avermedia Trinity I have).

Good luck!

 

[mm1352000]

Hi everyone

I know this thread is old, but I thought I should at least add some definitive answers for anyone viewing it in the future.

Firstly, DiSEqC support must be added individually for each manufacturer. You can thank Microsoft for that - they didn't include DiSEqC control interfaces in their BDA/Directshow framework until Windows 7, so each manufacturer developed their own proprietary way to do things.

MediaPortal supports DiSEqC with quite a few brands including TBS, Tevii, Digital Devices, Hauppauge, Technotrend, Twinhan, Azurewave, Terratec, Technisat, KNC One, Mystique, Prof... the list goes on. We're constantly trying to improve our hardware support. You can find more information -->here<--.

Regarding Avermedia: we have asked them several times to provide the information that we need to implement DiSEqC support for their cards. As of right now, they have not yet provided the information. In fact they actually refused to provide it to me stating it was against their business policy. I am still trying to negotiate with them but I'm rapidly losing hope that there will be any positive outcome...

aucklander: your hybrid tuner would be supported if you installed a supported software encoder. The one that comes with the Avermedia software is not supported.

I hope that gives some clarity.

mm