[vdr] Use FF Card only as output device

[Patrick Maier]

Hi,

my DVB-S FF card broke down those days. I think it's the tuner of the card, 
because it can't lock to a frequency:
----- Output of femon -----
using '/dev/dvb/adapter0/frontend0'
FE: Philips TDA8083 DVB-S (SAT)
status 01 | signal 6363 | snr 1919 | ber 080484c0 | unc bfc2d9f8 |
----- End of output -----

Additional I've a DVB-S budget card in the system.
So is it possible to use the Tuner of the buget card and use the broken FF 
card only as display device and tell the system not to use the broken tuner?

Thanks and greets
Patrick