GUIDE 5N5863 - Caterpillar

Illustration 6 g06069440
GNSS Accuracy Screen controlling the low GNSS accuracy messages
The GNSS Accuracy screen is the interface for setting the system behavior based on the GNSS error approximated for each GNSS receiver. The GNSS Accuracy screen has no control over the accuracy that the GNSS receivers experience but only over the limit at which it will trigger the Low GNSS Accuracy (Left) and Low GNSS Accuracy (Right) messages. The GNSS accuracy that each receiver experience is based on the conditions discussed earlier regarding satellite connections and GNSS corrections.When site, infrastructure, and environment conditions drop the GNSS receiver accuracy but the accuracy is still within site tolerances, it may become necessary to adjust the error limit from Fine to Medium or Coarse on the system to suppress the Low GNSS Accuracy (Left) and Low GNSS Accuracy (Right) messages and allow the system to maintain automatic control of the blade.The horizontal and vertical error limits for the three Accuracy Modes may be customized depending on operator or site manager preference.Pre-Delivery Measure-up Dimension Verification
To verify the machine dimensions, use either two known good points or use a GNSS survey tool to compare the points.
Park the machine on a level surface that has a clear view of the sky.
To enter "Manager Mode", hold down the "OK" key as the display powers up.
Press the Next key until the second text window appears that shows Northing, Easting, and Elevation.
Verify which blade tip the system is using for the Grade Control display text items: "Blade: Left" or "Blade: Right".
Place the blade in the air and move the machine forward approximately 1 m (3.3 ft).
Lower the blade until the blade touches the ground or known survey point.
Note the values of the Northing, Easting, and Elevation from the display for the right