DJI Naza-M Lite - Manual (Page 33)

©2014 DJI. All Rights Reserved. 33
If the battery voltage displayed here is different from the voltage you measure
from a voltmeter, you have to calibrate it. Click the Calibration box, enter that
voltage in the Calibration column of the dialogue box, and then click Confirm.
Meanwhile you need you to choose the battery type you are using, so that MC
can provide the default warning voltages and ranges for you.
STEP3: First Level Protection
 No Load (No Load Voltage): Self-defining warning voltage. Needs your input.
 Loss (Line Loss Voltage): The battery voltage drop during the flight. Needs your input.
 Loaded (Loaded Voltage): The real-time battery voltage during the flight. This is the actual warning voltage
monitored by MC. Doesn’t need your input, calculated by No Load and Loss.
Tips:
Voltages Magnitude Relation:
 No Load: First level > Second level.
 Loss: First level = Second level.
 Loaded: Calculated, First level > Second level.
Method of Acquiring Line Loss Voltage:
1 Make sure you can fly your multi-rotor normally with a fully charged battery.
2 Use a fully charged battery, switch on the low voltage protections in assistant software, and observe the
current voltage. Fill a reasonable warning voltage in the No Load of first protection (We recommend to
fill a voltage 1V lower than current voltage and higher than minimum battery voltage rating in). Fill 0V in
Loss at the moment.
3 Fly the multi-rotor until the first level protection is triggered, and the red light is flashing. Now land your
multi-rotor ASAP.
4 Connect the MC to PC, open the assistant and acquire new current voltage. The Loss (Line loss voltage)
is the difference between the new current voltage and the first level No Load voltage you filled in.
Notices:
 If the line loss voltage of a battery is over 0.3V per cell (e.g. 3S battery over 0.9V), it’s because the
internal resistance of battery is high or the battery is too old, we suggest you to replace it!
 Generally the line loss voltages vary with different makes of batteries. For the consideration of safety,
you’d better acquire all the line loss voltages of all your battery you are using, and fill the lowest one in
the Loss box.
 When you change the payload or multi-rotor, you have to get new line loss voltages.
 The line loss voltage will be larger after many times of use, you should get new ones after 30 times of