Spektrum SPM7800 DX7S - Manual (Page 20)

20 SPEKTRUM DX7s • RADIO INSTRUCTION MANUAL
EN
FAILSAFES
When you bind your transmitter, you are programming the receiver with failsafe defaults. If connection is lost between the transmitter
and receiver, the receiver immediately operates in those preprogrammed default positions. Those positions are failsafes. The AR8000
has three failsafes: SmartSafe Failsafe, Hold Last Command Failsafe, and Preset Failsafe.
SmartSafe Failsafe
SmartSafe is a safety feature on the throttle channel only that
offers the following benefits:
• Prevents electric motors from operating when the receiver
only is turned on (no signal present).
• Prevents the speed controller from arming until the throttle is
moved to low throttle position after connection is made.
• Shuts off electric motor and reduces gas/glow engines to idle
if signal is lost.
• If throttle is at any position other than low, the ESC won’t arm
• If connection is lost in flight, SmartSafe sets the throttle to
the position it was in during the binding process.
How To Program
SmartSafe is automatically set when the receiver is bound.
NOTICE: You must put the throttle stick in the low position to
store low throttle during binding.
To Test
Confirm the failsafe setting is correct by turning off the transmit-
ter. The throttle should go to the preset low throttle position.
CAUTION: Make sure the aircraft is restrained on the
ground. If failsafe is not set, your aircraft might advance to mid
or full throttle.
Hold Last Command
If you lose connection, all channels except for throttle channel
hold last given command and the aircraft continues on its path.
So, if you were turning when connection was lost, your aircraft
would continue turning.
How To Program
1. Leave the bind plug in the bind port through the entire
binding process.
2. Remove bind plug only after receiver connects to transmitter.
To Test
Confirm the failsafe settings are correct by turning off the
transmitter. All channels except for the throttle should hold the
last command.
CAUTION: Make sure the aircraft is restrained on the
ground. If failsafe is not set, your aircraft might advance to mid
or full throttle.
Preset Failsafe
If the signal is lost, all channels are driven to their failsafe
position set during binding.
Preset Failsafe is ideal for sailplanes, as spoliers can be
deployed during loss of signal, preventing a flyaway.
How To Program
1. Insert the bind plug and power on the receiver.
2. When the receiver LEDs blink indicating bind mode, remove
bind plug before binding the transmitter to the receiver.
3. LED lights will continue to blink.
4. Move transmitter’s control sticks and switches to the desired
Preset Failsafe positions then turn it on in bind mode.
5. The system should connect in less than 15 seconds.
NOTICE: Failsafe features vary according to receiver, so if us-
ing a receiver other than the AR8000, consult your receiver’s
instructions for the failsafes that apply.
Before flight, ALWAYS confirm your binding is good and failsafe
is set. To do this, make sure the system is connected, turn your
transmitter off. Confirm that low-throttle is active.
CAUTION: Make sure the aircraft is restrained on the
ground. If failsafe is not set, your aircraft might advance to mid
or full throttle.