Radiolink Electronic Ltd
www.radiolink.com
Receiver and flight controller CrossFlight setup:
By default, a newly purchased receiver will be set-up to simply hold all channels at their last known position
when the receiver and transmitter lose contact. This is not good because the flight controller has no way to
know that the Pilot has lost control of the vehicle. Instead the receiver must be set-up to signal to the flight
controller it has lost contact and there are two ways that it can do this (the method depends upon the receiver):
“Low-Throttle” method - the receiver pulls the throttle channel (normally channel 3) to a value below the
bottom of its normal range (normally below 975).
With the LiPo battery disconnected:
1. Connect your flight controller to the mission planner and select Initial Setup >> Mandatory Hardware >>
Failsafe.
2. Set the Failsafe Options to one of the three options:
(1) “Enabled always RTL” to force the vehicle to always RTL even if flying a mission in AUTO mode.
(2) “Enabled Continue with Mission in AUTO” to allow the vehicle to continue with missions even if it takes
the vehicle outside of RC range (not recommended). In all other cases the vehicle will RTL.
(3) “Enable always LAND” to force the vehicle to Land immediately if it loses RC contact.
Set the “FS PWM” value to be:
(1) at least 10 PWM higher than your Channel 3’s PWM value when the throttle stick is fully down and the
transmitter is off.
(2) at least 10 lower than your channel 3’s PWM value when the throttle stick is fully down and the transmitter
is on.
(3) above 910.
Click OK to into the failsafe setting menu.
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