Dji Phantom 2 Vision + User Manual download pdf (Page 17)

Need to Know: The Phantom cannot avoid obstacles during Failsafe. So it might be a good idea to try Regaining

Control as soon as you can.

Need to Know: In FAILSAFE mode, the aircraft speed is really slow and if you are low on battery it may

be an issue!

2- Regain Control:

This will depend on the position of the S1 switch (GPS or ATTI) when the Failsafe was triggered.

S1 was on ATTI

: You will get back control as soon as signal is recovered.

S1 was on GPS

: You WILL need to toggle the S1 switch to ATTI once to regain control. If the signal is

recovered, you will get back control; switch S1 back to GPS.

If you do not toggle the S1 switch, you won’t be able to control anything. Why? Because it’s the

“Phantom’s Flight Control System” that controls your aircraft now and land it automatically (it

will not exit the Failsafe mode by itself even if the signal is restored). So remember to switch

S1 from GPS (top) to ATTI (center) then back to top position after you regain control.

(The GPS > ATTI > GPS Flipping Sequences).

Need to know: What will happen if you have manually reset the Home Point way up in the air and Failsafe

activates; will it kill the motor when it reaches the Home Point and crash down?

Not to worry! The Phantom will just slowly descend until it cannot descend anymore. Once it feels

that the altitude is no longer changing for about 3-5 secs, it will turn off the motors.

E- GPS Lost

GPS ATTI

You are flying in GPS mode (S1 in the upper position) and suddenly the Phantom starts drifting when you let go of

the sticks OR you see the Rear Led suddenly slowly flashing Yellow. First thing to do is check the number of

satellites on the DJI Vision Camera screen (top right corner). If there are less than 6 sat, you've lost GPS and are

now flying in ATTI mode (Note: you won’t get any warning from the DJI Vision App). You WILL have control but it

will be a bit harder to fly/land because of the drifting.

It’s always a good idea to keep an eye on the number of satellites when flying. Especially if that number changes

rapidly over a short period of time meaning, maybe, you have an unstable GPS signal.

GPS Lost maybe cause by several factors, like:

- You’ve decided to take off even though satellites signal were unstable or merely got 6 satellites.

- Flying under or near something that may have blocked the “Line of Sight” between the GPS Module and

Satellites: Trees, Buildings…

- GPS system might be damaged (after a crash, a hard landing)

Best thing to do is to try to stabilize as much as you can and see if you can regain GPS (moving up a bit might

also help) OR learn how to fly in ATTI mode...very, very fast. So now might be a good idea to do some ATTI

flying\landing practice, just to be prepared for this kind of situation.

Need to Know: When GPS is lost, Flipping S2 to H/L won't work because H/L, just like FAILSAFE/RTH, is dependant

on having enough satellites to properly triangulate. Flipping S1 to Failsafe will caused it to land straight down; in

which case you will have 3 things to remember : obstacle, obstacle and obstacle.

On the other hand, if GPS was ok (6+ sat) and the Phantom is still drifting away: Check out the Flyaway section.

Page 17

Dji Phantom 2 Vision + User Manual Page 17