[linux-dvb] Re: setting the proper transonder value

[Malcolm Caldwell <malcolm.caldwell@ntu.edu.au>]

On Wed, 2003-02-26 at 22:46, Sheetal_Pandey wrote:
> Hi Malcolm,
> 
> I tried the following
> dvbstream  -o -f 1150 -p H -I 1 -s 28125 517 700. I used dvbtune instead of
> dvbstream.It says could not lock to the given frequency.It shows that
> freq=1150 S/R=28125 etc. Do I have to change some where else for it to take
> these values.

I don't know.  (I am not even sure I know what you are asking).  Perhaps
someone more familiar with dvbtools can answer.

> 
> I changed the parameters as above for RTPi in channels.conf and ran ./vdr.I
> am not very friendly with the menu on screen so I was not able to enter into
> that.Up and down was fine.

So is it working?

Here is my channels.conf:
RTPi:1150:h:S100.5E:28125:517:700:0:0:30:0:0:0
DW:1150:h:S100.5E:28125:2305:2306:0:0:1:0:0:0
RAIi:1150:h:S100.5E:28125:513:644:0:0:3:0:0:0
TVE:1150:h:S100.5E:28125:514:648:0:0:4:0:0:0
TV5 Asie:1150:h:S100.5E:28125:515:625:0:0:5:0:0:0

(RTP is first because that is what I am more interested in!)  I have not
added the radio yet.

For this to work you need the following in your setup.conf
LnbFrequHi = 0
LnbFrequLo = 0
LnbSLOF = 0

> 
> Regards,
> Sheetal Pandey
> 
> 
> -----Original Message-----
> From: Malcolm Caldwell [mailto:malcolm.caldwell@ntu.edu.au]
> Sent: Wednesday, February 26, 2003 12:18 PM
> To: Sheetal_Pandey
> Cc: linux-dvb@linuxtv.org
> Subject: Re: [linux-dvb] setting the proper transonder value
> 
> 
> On Wed, 2003-02-26 at 14:35, Sheetal_Pandey wrote:
> > Hi,
> > 
> > I am using the Hauuppauge WinTV nexus-S card.I have tuned the antenna to
> > ASIASAT 2.I am trying to lock the card to European bouque but since I am
> > using the card for the first time ,I am not comfortable in giving the
> proper
> > values.
> > 
> > I have another digital satellite receiver which is locked properly to
> > European bouque ,I mean that the signal is proper.
> > 
> > The downlink freq is 4000 MHZ,fec 3/4,Symbol rate 28.125 Mbaud.I am using
> a
> > C band LNB with local oscillator freq 5150.Can somebody help in filling
> the
> > proper values.
> 
> I have this working - asiasat2 and European Bouquet.  I am fairly sure
> the command line for eg. dvbstream is: (for eg for RTP)
> dvbstream  -o -f 1150 -p H -I 1 -s 28125 517 700
> (I can't confirm this at the moment as vdr is currently running)
> 
> The problem is that the dvb stuff assumes Ku band LNB where you tune to
> L = freq - LOF.
> 
> With c-band L = LOF - freq.
> 
> (L is the frequency on the cable from the LNB to the card).
> 
> Luckily most of the tools accept L band frequences directly.  So to tune
> to the European Bouquet you need to tune to 1150 (ie 5150 - 4000).
> 
> In VDR I have set the LOF to 0 and I put 1150 in the channels.conf.
> 
> I think that VDR could be modified to accept the real frequencies.  All
> that is needed is to put freq=abs(freq).
> 
> (If freq - LOF = L, then LOF - freq = -L.  By putting the abs in we get
> the correct frequency)
> 
> I must add that I have not tried this modification yet. (What do other
> think?  Klus?)
> 
> > 
> > Regards,
> > Sheetal Pandey
> > 
> > 
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