Really, really, frustrated here. Settiing up 8.5 FMS on an XP system with SPP. Using PPM via mobo sound card line-in. I have tried everything I can think of but I just can't get any signal to the calibration module. Absolutely no bar jiggle at all.
Winscope shows a good signal. RC Thermometer shows signals that change with stick movement. Digital sound comes from spkrs. SPP set to Line-In, PPM (generic). XP audio settings all look fine. FMS looks fine. SPP starts normally and looks OK.
Seemingly same as another XP system here and using same cable and TX's. Doesn't work with PCM Tx either.
Stumped!