The XP is a special receiver that is identical to the D8R-II Plus, but it has added the RSSI and CPPM outputs commonly used for FPV aircraft. CPPM can reduce wiring to some flight controllers, a single servo extension can carry all 8 channels to the flight computer. Furthermore, CPPM output can be used as a wireless trainer system (wireless trainer cable). The RSSI output is for use with On Screen Display (OSD) systems that are common in the First Person View (FPV) vehicles. (All FrSky telemetry receivers send RSSI levels back to the transmitter, but this receiver can output this data for use with an OSD.)
Compatible with FrSky two way telemetry modules: DFT, DJT, DHT, DHT-U, XJT
Two external analog telemetry ports (A1&A2) and one digital data-stream port (Rx)
RSSI (PWM) and CPPM output - If CH3 and CH4 are connected by a jumper, CH1 will output CPPM for CH1~CH8, and CH2 will output RSSI (PWM)
When side port pins of A1 and X are connected by the jumper, A1 will change from external analog telemetry port to internal built-in battery voltage sensor
Alarm warning on low voltage, poor reception, etc.