5 Using 3D Guidance in theField
Note – The estimated orientation of the machine is continually re-calculated, and as
you swing the body while working, the orientation estimate improves.
If the progress bar disappears and the Rotate Machine message flashes, then the
initialization has failed. If the initialization fails, repeat the initialization procedure.
5.2.4 GNSS base configuration
If you are using relative corrections, both local and remote GNSS bases can be
configured from the GNSS Base Configuration dialog.
Note – Changing between correction sources is not recommended as it may cause
your position to shift. A warning message will be displayed if correction sources are
changed to help prevent unwanted corrections being used.
To open the GNSS Base Configuration dialog:
1. From the Setup Menu–Installation menu, select Connectivity Settings.
2. Press the up or down arrow keys on the control box to select GNSS Base
Configuration and press \::
The list of GNSS bases are displayed.
5.2.5 Setting GNSS accuracy mode
If you are using one or more GNSS receivers as position sensors, make sure that the
selected GNSS accuracy mode is appropriate for the work you are about to do. Note
that in certain conditions, poor quality signal transmission may mean that GNSS
accuracy is continually less than that allowed by the error limit. Atmospheric
conditions can impact upon the quality of signal transmissions broadcast from
satellites. Also, the distance you are operating from the base station can affect
signal quality. The higher the accuracy mode, the lower the tolerance for errors.
To check and/or set the GNSS accuracy mode:
1.1. From any guidance screen, press GNSS.
Note – GNSS accuracy mode can also be set from the GNSS Accuracy dialog
in the Setup Menu – Configuration menu.
2. From the Setup Menu – Configuration menu, select GNSS Accuracy.
112 GCS900 GradeControl System for Excavators Operator's Manual
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