CAP AS 4E5124 - Caterpillar

Introduction
In order to access the "GPS Accuracy Mode" dialog, press the "GPS Accuracy Mode" soft key. Use "GPS Accuracy Mode" in order to set the maximum GPS error estimate that is acceptable for your application.If the GPS error estimate exceeds the limits defined for the selected mode, a "Low Accuracy GPS" message is shown on the Display.There are three GPS Accuracy modes:
Fine
Medium
CoarseYour supervisor sets the limit for each mode. Your supervisor sets each mode to suit the type of work you are doing. (Your supervisor can also deactivate the modes.) For example, the limits for Fine mode are set for finish trim work. If GPS accuracy is not within the tolerance set for Fine mode, do not change into Coarse mode in order to continue working on your final trim surface. Instead, do one of the following things:
Wait for the GPS accuracy to improve and then continue in Fine mode.
Change the GPS Accuracy mode and then continue working on an area that does not require Fine mode GPS accuracy.
Change the GPS Accuracy mode and then raise the vertical offset in order to leave the constructed surface high. Return to the area when the GPS accuracy has improved and allows Fine mode operation. This allows you to continue working on the same area of the design and not overcut the final design surface.GPS Accuracy Mode Text Items
Three text items that display the current GPS accuracy level can be displayed on the guidance views:
H. GPS Err.
V. GPS Err.
GPS Acc. ModeThe color of the text item shows whether the current GPS error is within the selected GPS accuracy mode limits:
The text item value remains black while the GPS error is less than 90% of the limit defined for the GPS accuracy mode.
When the GPS error is approaching the defined limit, the text is blue.
If the GPS error exceeds the limit of the GPS accuracy mode, the text is red.Selecting the GPS Accuracy Mode
In order to select a GPS accuracy mode, complete the following steps:
From the guidance screen, press "GPS".
Press the "Change Mode" soft key in order to move between fine, medium, and course accuracy modes. Refer to Illustration 1.
Illustration 1 g01280824
Typical example of a GPS accuracy mode dialog (1) Current accuracy icon (2) Current accuracy description and icon (3) "Change Mode" softkey (4) Current error limit
Perform one of the following actions:
Press the "OK" key in order to accept the changes and return to the guidance screen.
Press the "ESC" key in order to cancel any changes and return to the guidance screen. You are asked to confirm that you do not want to save any changes.