RadioLink Electronic Limited
13
When the transmitter is T8S, press the CH6 switch twice continuous and then push the aileron or elevator stick. If
push the aileron stick to the left, the F121 Pro will roll 360 degrees to left. If push the aileron stick to the right, the
F121 Pro will roll 360 degrees to right. If push the elevator stick upward, the F121 Pro will roll 360 degrees
forward. If push the elevator stick downward, the F121 Pro will roll 360 degrees backward.
When you ready to controlling your F121 Pro roll 360 degrees backward, you must fly your F121 Pro far away
from yourself first to ensure safety.
When the transmitter is T8FB, the 360 Angle Flips Mode switch is VrB, the operating steps are same as T8S.
Attention:
①
the interval time for push the aileron or elevator stick do not more than 5 second when you press
the 360 Angle Flips Mode Switch. You have pressed the switch again if the time is more than 5 second.
②
the 360 Angle Flips Mode only adapted to the Altitude Hold Mode and the Stabilize Mode. 360 degrees roll at
Manual Mode depends on the pilot’ operating of sticks.
4.6 Low Battery Alarm
When the green LED on F121 Pro starts slowly flashing during flight, it means the voltage of F121 Pro is lower
than 3.7V, when the green LED on F121 Pro starts quickly flashing during flight, it means the voltage of F121 Pro
is lower than 3.8V as this value is default for 1S battery. It’s advised to stop flying to avoid battery over
discharging.
* F121 Pro FPV RTF version is capable of OSD function and pilot can check the current voltage of the battery by
goggle or FPV screen in real time.
4.7 Calibration
Level calibration have finished when you received the F121 Pro, you
can re-calibrate if you need. F121 Pro is in disarmed state when
calibration.
Level calibration steps as below:
①
make sure the four motors are vertical to the aircraft frame. If
necessary, adjust them to vertical positions, otherwise F121 Pro may
not flight that balance.
②
put the F121 Pro on a level surface, and then power on both F121
Pro and transmitter.
③
put the left stick to the lower left position and the right stick to the
lower right position, keep about 3 seconds till the green LED of F121
Pro blink once, then calibrate success.
