EN
7
Testing Failsafe
Secure the aircraft on the ground and remove the propellers. Test Failsafe
by turning the transmitter off and noting how the receiver drives the control
surfaces.
Receiver Power Only
• With SmartSafe or Preset Failsafe, when the receiver only is turned on (no
transmitter signal is present), the throttle channel has no output, to avoid
operating or arming the electronic speed control.
• All other channels have no output until the receiver has linked to the transmitter.
Flight Log
Flight Log data can help you optimize the control link for your aircraft. Flight
Log data is displayed on telemetry capable Spektrum transmitters.
Using the Flight Log
A
- Fades on main receiver.
B
- Fades on remote receiver B
L
- Fades on remote receiver L
R
- Fades on remote receiver R
F
- Frame losses
H
- Holds
Fades
Represents the loss of one bit of information on one receiver. Fades are used
to evaluate the performance of each individual receiver. If any single receiver
displays higher fade values it should be inspected and the antenna repositioned
to optimize the RF link.
Frame Loss
A frame loss occurs when one complete data packet is missed. A single frame
loss does not represent a loss of control, but frame losses should be monitored.
In the air it's normal to experience as many as 100 frame losses per minute
of fl ight. On the ground the number of frame losses will be higher because the
signal is hampered by earth and moisture.
Hold
A Hold occurs when 45 consecutive frame losses occur. This takes about one
second, and in this event the receiver moves the channel outputs to the failsafe
settings. If a hold ever occurs, it’s important to re-evaluate the system and
check every component. If your system displays a hold taking place, diagnose
the cause and resolve the issue before fl ying again.
It is normal to see a hold logged if you power OFF your transmitter and back ON.
