Blade Blade 350 QX2 AP Combo, Instruction Manual

15

EN

Compass Calibration Steps

Compass Calibration

Pressure Sensor Calibration

Accelerometer Calibration

The Flight Controller on the 350 QX2 AP has automatic magnetic declination calibra-
tion, so you will not have to worry about looking up the magnetic declination at your 
location and changing settings on your 350 QX2 AP to get accurate compass mea-
surements. The status LED blinks orange if the compass senses a magnet or metal 
object nearby. A random orange fl ash of the LED is considered normal, and not 
cause for compass calibration. When the Status LED blinks a consistent pattern 
of orange, compass calibration should be performed using the procedure below.

Compass calibration procedure:

1.  Go to an open space outdoors away from metal. Take a conventional compass 

with you to ensure you know the direction of north.

2.  Ensure your transmitter is off and then connect a fl ight battery to the

350 QX2 AP. Power the aircraft on. Wait fi ve seconds and then the blue LED will 
begin fl ashing rapidly, signaling the aircraft is initialized and ready to bind.

3.  Once the blue light begins fl ashing, bind with yaw stick left. The 350 QX2 AP 

LED will slowly fl ash between red and green for 5 seconds. 

4.  Put the 350 QX2 AP fl at in your hands and face north. After 5 seconds of slow 

fl ashing, the quad will start fl ashing rapidly. The quad is now collecting data to 
be used for the calibration.

5.  Slowly rotate the quad 360 degrees about the east-west axis (“fl ip” the aircraft 

either forward or backward) until it is fl at in your hands again. 

6.  Continue facing north and yaw the quad 45 degrees left so the quad is now 

facing north-west.

7.  Slowly rotate the quad 360 degrees about the east-west axis, (“fl ip” the aircraft 

diagonally either direction) until it is fl at in your hands again.

8.  Continue facing north and yaw the quad 45 degrees left so the quad is now 

facing west. 

9.  Slowly rotate the quad 360 degrees about the east-west axis (“fl ip” the quad 

sideways either direction) until it is fl at in your hands again.

10. Continue facing north and yaw the quad 45 degrees left so the quad is now 

facing south-west. 

11. Slowly rotate the quad 360 degrees about the east-west axis (“fl ip” the aircraft 

diagonally either direction) until it is fl at in your hands again.

You have 30 seconds to complete the procedure. The 350 QX2 AP should still be 
blinking rapidly when you fi nish. Hold the aircraft still until it stops blinking rapidly. If 
successful, the 350 QX2 AP will beep a positive confi rmation and then restart itself. If 
unsuccessful, the 350 QX2 AP displays the failed calibration code, a solid white LED. 
If the 350 QX2 AP displays this error code, power off the aircraft and then begin the 
calibration procedure again. 

The pressure sensor is calibrated at the factory on the 350 QX2 AP. Recalibration 
should only be necessary if you replace the sensor.  

1.  Place the 350 QX2 AP in a cold area. Allow it to remain in the cold for 30 

minutes or more. 

2.  Bring the 350 QX2 AP out of the cold and into a warm area. The greater the 

difference in temperature between the cold and warm areas, the more ac-
curate the calibration will be.

3.  Ensure your transmitter is off and then connect a fl ight battery to the

350 QX2 AP and power the aircraft on. Wait fi ve seconds and then the blue LED 
will begin fl ashing rapidly, signaling the aircraft is initialized and ready to bind.

4.  Once the blue light begins fl ashing, bind with yaw stick right. The

350 QX2 AP will blink red and blue rapidly. Leave the aircraft and transmitter 
powered on and allow the aircraft to warm up for 10 minutes. Do not move 
the aircraft during this time.

5.  After 10 minutes the motors on the aircraft will beep to indicate the calibration 

is complete. Power off the aircraft and then your transmitter. 

If the 350 QX2 AP displays the failed calibration code, power off the aircraft and 
then begin the pressure calibration procedure again. 

To calibrate the accelerometer, the quadcopter needs to fl y for 20 seconds while 
being level. This allows the accelerometer readings to be averaged and stored in 
memory.
Use the following procedure to calibrate the accelerometer:
1.  Power on the quadcopter with the transmitter off to enter bind mode.
2.   Turn on the transmitter while holding the elevator stick back and pressing 

the bind switch.

3.   Set the fl ight mode switch to AP Mode or Smart Mode. The quadcopter will 

fl y in AP Mode no matter which position is selected.

4.   Start the motors. Fly the quadcopter off the ground. The quadcopter LED will 

fl ash slowly (red, green, blue).

5.   Activate the accelerometer calibration mode by changing the fl ight mode 

switch into Stability Mode. The vehicle will still fl y in AP Mode. The LED will 
start fl ashing quickly (red, green, blue).

6.   Fly steadily for 10–30 seconds. The LED will fl ash slowly when data

collection is done.

7.   Land the quadcopter and stop the propellers by lowering the throttle and

holding the bind button for 1 second.

IMPORTANT:

 The calibrated values are not yet permanently stored. Do not turn 

off the quadcopter.
8.   Start the motors and verify the quadcopter fl ies without drifting.
9.   Land the quadcopter and stop the motors by lowering the throttle and

holding the bind button for 1 second.

10.  Save the calibration by moving the rudder stick quickly left, right, left, right. 

Values are saved when you hear a rapid triple tone twice.

11.  Turn off the quadcopter.
12.  Confi rm the calibration by powering up the quadcopter and performing a test 

fl ight. If the calibration is not correct, start the calibration procedure again.

North

Step 5

Step 7

Step 9

Step 11