lefeirc SN-L Plus - REMOTE CONTROLLER; Set RC channel travel range; Learn RC

SN-L+ USER MANUAL
7
 CORRECT CONTROL SURFACES MOVEMENT
 CONNECT AIRSPEED
*AUX1 channel set as <NONE>
 TELEMETRY PORT
Port TX as telemetry port.
TX port can be set as <MAVLINK57600> / <MAVLINK115200> / <DJI>.
*If you set as <MAVLINK57600> , the airspeed meter could not work normal.
5. REMOTE CONTROLLER
 Set RC channel travel range
Please set range at OSD or SN_GCS:
Enter OSD menu <REMOTE>:
CHANNEL MAX: select and pull throttle stick to max position; hold throttle and exit.
CHANNEL MID: select and exit.
CHANNEL MIN: select and pull throttle stick to min position; hold and exit.
 Learn RC
Why should learn RC?
To let FC learn channel direction and channel type (AETR or TAER).
STEP1: power on FC.
STEP2: pull RUD channel to max position (right or left) before OSD start picture show.