This dialog can be opened for the HiPer HR and HiPer VR receivers.
Activated Tilt correction mode:
![]() | Green Bubble The bubble is within the external circle when the value of the tilt pole angle is in the range from zero to the value, selected in the Tilt Correction Limit (TCL) field. The radius of this circle depends on the value, selected in the Tilt Correction Limit field:
The internal circle radius is fixed to one degree. |
![]() | Red Bubble The bubble touches the external circle when the value of the tilt pole angle exceeds the value in the Tilt Correction Limit field. |
Deactivated Tilt correction mode:
![]() | Green Bubble The bubble is within the internal circle when the value of the tilt pole angle is in the range from 0 to the value, selected in the Filter Excess Movement greater than field. |
![]() | Blue Bubble The bubble is between the internal and external circle when the value of the tilt pole angle is in the range from the value, selected in the Filter Excess Movement greater than field to six degrees. |
![]() | Red Bubble The bubble touches the external circle when the value of the tilt pole angle is six degrees or more. |
Note: GNSS topo points measured with TILT™ enabled have the icon in the Properties column (the Points dialog).
For the HiPer HR and HiPer VR receivers you can activate the Auto Store mode in the TILT Settings dialog. In this mode for Topo, Auto Topo and Stake survey MAGNET Field automatically starts measuring of a point if the pole tilt value was less than 1 degree during the time interval longer than the Auto Store After value (by default it is 2 seconds). When the Auto Store mode is activated, the Quick settings will be used to perform the measurement for the given point.
In this mode you can activate or deactivate the Tilt Correction mode:
If the GNSS receiver contains HIMU, the user can activate the Tilt Correction mode in the TILT Settings dialog. For Topo, Auto Topo and Stake survey, MAGNET Field uses the tilt pole value from HIMU to calculate the offset of the GNSS antenna phase center in the horizontal plane, for each GNSS epoch. These offset values are used for obtaining the true coordinate of the measured ground point. The offset values are calculated if the current tilt angle does not exceed the value in the Tilt Correction Limit field.
When the current tilt angle exceeds the value in the Tilt Correction Limit field, but it is less than 30 degrees, the epoch counter will be paused and the software forbids saving the point coordinates for these angles. The Topo, Auto Topo and Stake dialogs will display the current position.
When the current tilt angle exceeds 30 degrees, the Tilt Correction mode will be automatically deactivated.
Symbols on the figure:
Note: The icon next to the bubble in Topo / Auto Topo / Stake dialogs (Map View) indicates that an epoch received from the rover does not contain magnetic declination angle data and tilt correction is not performed. If you run across such an issue, please check that your receiver has the latest firmware installed.
Changing of the external magnetic field can influence magnetic compass accuracy. MAGNET Field displays the value of the external magnetic field in the graphical and text view in the Topo / Auto Topo / Stake dialogs (when Map View is selected):
If you need to perform a survey in magnetic interference, we recommend you to deactivate the Tilt correction mode and use the Tilt Filter Limit feature.
This dialog is displayed for the HiPer HR, HiPer VR and GRX3 receivers. Before starting with IMU, you must perform the IMU calibration procedure. The procedure consists of the following steps:
Calibration is performed independently and sequentially. After all three calibrations are finished, the receiver IMU is ready to use.
Below are general recommendations on carrying out the calibration of the IMU:
If the calibration data are no longer valid, the icon appears in the Topo / Auto Topo / Stake dialogs (when Map or Normal view is selected). The epoch counter will be paused and the software forbids saving point coordinates. You need to perform the calibration procedures for the electronic level and the magnetic compass in 3D and the horizontal plane.
See also when compass recalibration is required.
To take an accurate level and compass reading, you need to perform the electronic level calibration procedure. To calibrate the level using MAGNET Field:
To take an accurate compass reading, you need to perform the compass calibration procedure for each location before starting the survey. Make sure to calibrate the level before calibrating the compass.
Rotate the receiver 360 degrees in any planes and directions so that the position of the receiver antenna's phase center during rotation would fill the entire sphere around the receiver. Progress bar in MAGNET Field will reflect the process of filling the sphere in percent.
The calibration process will be completed as soon as the whole sphere is filled. This can be indicated by the following message displayed:
If you stop rotating the receiver during the calibration procedure, the calibration will finish with error after 2 minutes of leaving the receiver still (without movement) and the following message will be displayed:
Note: After you performed the calibration, its parameters will be automatically saved into the receiver. It means that the saved calibration will be used even after you turn off the receiver and turn it on again.
To take accurate compass reading, you need to perform the compass calibration procedure in the horizontal plane for each location before starting the survey. First, perform the calibration of the level and calibration of the compass in 3D, then calibrate compass in 2D. To calibrate the compass using MAGNET Field:
or
You will need to calibrate the ELC sensor for the following conditions: