[linux-dvb] Re: Does loopthough works with current refactoring CVS ?

[Rainer Zocholl <UseNet-Posting-Nospam-74308-@zocki.toppoint.de>]

Gregoire.Favre@freesurf.ch(Gregoire Favre)  20.11.04 10:39

>Hello,

>I try to have my two FF connected one directly, the other to the first
>and I can't get anything at all on the second one, even on same
>satelite, same polarisation and same transponder ???

>Is there now an option to activate the loopthrough ?

Where did you that loopthrough can be switches off?

>Have it been removed due to quality problem like :
>http://www.linuxtv.org/mailinglists/linux-dvb/2002/07-2002/msg00178.html

The "loopthru" and an external "switch" are totally different
pair of shoes.

To use "loop thru" you musst apply something like the "LNB_sharing_patch"
to ensure both cards are using the same polarization (v/h) and
the same LFO (Lo/hi).

Too the LNB voltages reguators may be switched of because of
overload/reverse voltage. If your LNB gets it power not
independently you may get a back image...

If you have 2 cables it's better to use a "switch".

Too the damping of the loopthru is high.
The loop thru is nowaday supersuperflous.
If yu can, get cards without loop thru.



Rainer---<=====>                         Vertraulich
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