User Manual

USER GUIDE
101
8.5 MicroVector Calibration
The MicroVector is factory calibrated, and normally no further
calibration is necessary. However, user calibration of some
sensors can be performed. Calibration options are located on
the “Calibration and Sensor Setup” menu.
8.5.1 Electrical Calibration
The voltage and amperage (current) readings for your motor
pack, and the voltage readings for your receiver pack (if used)
can be calibrated.
These calibrations are performed in the “Electrical Calibration”
menu. For your convenience, all voltages and currents are
displayed in real time on the electrical calibration page, so you can
compare the MicroVector readings with the readings of your
voltage and current meter as you change the settings.
Voltage Calibration: To calibrate voltages, change the “Voltage
Factor” for the appropriate voltage. Increasing the factor
increases the reported voltage, and vice versa.
Current Calibration: Calibrating an optional current sensor
typically involves just increasing or decreasing the “Current
Sensor Factor” as appropriate.
One additional calibration setting for the current sensor is the
“Zero Offset”. The zero offset is chosen to match the lowest level
of current flow that the MicroVector’s current sensor can detect. Typically, this is about 300 mA (0.3 amps).
If your current sensor’s true offset is 300mA, and the current offset is set to 0.3 in the menu, the MicroVector
will always read 0.3 amps when the current draw is less than or equal 0.3 amps, but when the current climbs
above 0.3 amps, the MicroVector will correctly read that current. If your amp meter shows that you are
drawing greater than 0.3 amps when your motor is not running (due to your video camera, video transmitter,
the MicroVector, and other accessories), but the MicroVector is reading 0.3 amps, increase this setting until the
MicroVector matches your meter’s reading. Note that an incorrectly set offset will only cause a very slight
amount of error, so changing the offset is generally not needed.
8.5.2 Altimeter Calibration
The MicroVector’s altimeter is factory calibrated. When the MicroVector has been unpowered for a while, it is
normal for a small amount of altimeter drift to occur over a few minutes, as the MicroVector warms up. When
you reset the home position, or when you arm your multirotor, the MicroVector’s altimeter is automatically
rezeroed, erasing any drift.
But, if you see your MicroVector’s altimeter drifting more than a few feet (1-2meters) during warmup, and that
is causing issues for you, you can calibrate it as follows:
1) Make sure that the weather is not changing, which can cause significant barometric pressure
differences in a short period of time.