Ok Ive managed to get w_scan working. didnt have much luck with scan or dvbscan, not sure why. [ solved : scan uses the legacy tables in /usr/share/dvb-legacy ]
w_scan produces a list of all the channels Ive been seeing on windows ( same machine ) and my gtmedia sattuner.
This is a spare box using the tbs6982
If I try and scan the muxes in tvheadend it doesnt get any input signal
I include a scan of one of the muxes for 11096
w_scan -a1 -f s -s S5W0 > eutelsat.conf
produces this relevant line
VIAVOSGES;EUTELSAT:11096:vC34M5O20S1:S5W:29950:2461=27:2462=fre@3:0:0:426:1375:20400:0
I tried using dvbscan but it returns back to the prompt immediately
dvbscan -adapter 1 /usr/share/dvb/dvb-s/Eutelsat5_5.0W
I have seen more forum entries in the past with a similar problem but no resolution.