Translations:Wiring/45/en
From Spirit System Manual
When using S-BUS it is necessary to use an inverter that replaces the cable between the receiver and the Spirit unit's RUD port. The inverter cable - called SBUS Adapter - can be purchased separately. The SBUS Adapter has to be connected in the way, that longer end is directed to the unit and shorter to the receiver. This apply for both Futaba and FrSky receivers.