iGage
iG8 User Manual
75
Using the IMU (Tilt and Direction) Sensors
The iG8 receiver has an internal IMU: tilt sensors (an electronic bubble) and an electronic compass. The IMU can be used
to check the pole level, store the pole level in the RAW file and optionally correct for pole tilt (Tilt Compensated Shots.)
NOTE: Tilt compensated shots are currently not supported by the iG8, the accuracy and suitability for any purpose is
not warranted. The internal electronic bubble is suitable for field use.
Calibrating the Tilt Sensor
Before using the IMU, you need to calibrate the tilt sensor. Since you are only going to use the IMU on the Rover, you do
not need to calibrate the Base.
1.
When configuring the iG8 as a rover, check the Use
IMU checkbox:
2.
Place the receiver on a calibrated tribrach.
3.
Adjust the tribrach to insure that it is level.
4.
From the main menu, click on ‘Equip: GPS Rover’:
5.
Click on GPS Utilities:
6.
Click on ‘Sensor Calibration’:
7.
Click on ‘Zero Calibration’:
