Help with PPM Configuration on RFD900x 2.0 and TXMOD 2.2

[xfacta (Shawn)]

Use this guide

RFD900 / TXMOD and SBUS

I’m adding a “How-To” for the TXMOD and SBUS for RC control. I’m covering two aspects here: SBUS Increasing the baud rate - partially because that’s how I have mine set, so better to mention it now than have anyone confused by the screenshots, and partially because nearly everyone should update to the higher baud rates unless you fly very long distances On the air-side/remote radio you need the SBUS output connected to the RCin of your flight controller. It’s the same pin as for RC/PPM but t…

and use SBUS if possible, but you can substitute PPM if you really need to.
SBUS has the advantage of signalling a failsafe in the serial data instead of relying (only) on throttle below failsafe (and channels going to values set when the “PPM failsafe” button was clicked)
SBUS is a serial protocol with RSSI info and other things contained within, where PPM is more like old fashioned PWM.