[Fwd: Re: [vdr] VDR and polarization problems]

Harri Helmroos harri.helmroos at pp.inet.fi
Wed Nov 9 22:33:50 CET 2005


Sami J. Mäkinen wrote:
> Hmmmh, in universal LNBs the polarity and hi/lo frequencies
> are selected like this:
>
> # command:
> #   t         tone off (universal LNB: low freq)
> #   T         tone on (universal LNB: high freq)
> #   v         voltage low (13V) (universal LNB: vertical polarization)
> #   V         voltage high (18V) (universal LNB: horizontal polarization)
>
> You might try to increase the waits (W15 --> W50, for example)
> and then try to always first set the high or low voltage, command the 
> diseqc switch
> and only finally set the correct voltage for the selected polarization.
>
> If your current setup copes nicely with H pol but with
> V pol only after viewing a H pol channel try something like this:
>
> # port 1
> S1.0W  11700 V  9750  t V W50 [E0 10 23] W50 [E0 10 22] W50 t W50 v
> S1.0W  99999 V 10600  t V W50 [E0 10 23] W50 [E0 10 22] W50 T W50 v
> S1.0W  11700 H  9750  t V W50 [E0 10 23] W50 [E0 10 22] W50 t W50 V
> S1.0W  99999 H 10600  t V W50 [E0 10 23] W50 [E0 10 22] W50 T W50 V
>
> # port 2
> S5.0E  11700 V  9750  t V W50 [E0 10 23] W50 [E0 10 26] W50 t W50 v
> S5.0E  99999 V 10600  t V W50 [E0 10 23] W50 [E0 10 26] W50 T W50 v
> S5.0E  11700 H  9750  t V W50 [E0 10 23] W50 [E0 10 26] W50 t W50 V
> S5.0E  99999 H 10600  t V W50 [E0 10 23] W50 [E0 10 26] W50 T W50 V
>
> # port 3
> S13.0E  11700 V  9750  t V W50 [E0 10 27] W50 [E0 10 22] W50 t W50 v
> S13.0E  99999 V 10600  t V W50 [E0 10 27] W50 [E0 10 22] W50 T W50 v
> S13.0E  11700 H  9750  t V W50 [E0 10 27] W50 [E0 10 22] W50 t W50 V
> S13.0E  99999 H 10600  t V W50 [E0 10 27] W50 [E0 10 22] W50 T W50 V
>
> # port 4
> #Sxx.yE  11700 V  9750  t V W50 [E0 10 27] W50 [E0 10 26] W50 t W50 v
> #Sxx.yE  99999 V 10600  t V W50 [E0 10 27] W50 [E0 10 26] W50 T W50 v
> #Sxx.yE  11700 H  9750  t V W50 [E0 10 27] W50 [E0 10 26] W50 t W50 V
> #Sxx.yE  99999 H 10600  t V W50 [E0 10 27] W50 [E0 10 26] W50 T W50 V
>
> The changes made:
>
> 1) Increase all delays from 15ms to 50ms (W50)
> 2) Always set up the high voltage (V = 18V, v = 13V) (for H pol) first
> 3) Set up the correct voltage (13V or 18V) only after the whole 
> command sequence.
>
> I suspect that somehow your diseqc switch is not able to hear
> the commands unless your dvb-s card sets up the high voltage
> for horizontal polarization. This is only a wild guess, though.
>
> -sjm
CANADA!!

YES YES YES YES YES YES YES!!!!!! SUCCESS!!!!!!!!!!!!!!!!!!!!!!! I would 
never have come up with anything wild like that configuration.  That 
gave the diseqc the kick! Thanks Sami. If you come around some day, I'll 
buy you a mäyräkoira of your choice ;)

Thanks again! I'm off surfing the sky!



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