AccuGrade® GPS Using The CD550A Display (GPS/ATS/Sonic/Cross Slope) Caterpillar

The "Units" menu has five dialogs which allow you to select the units to show distance, speed, grade, cross slope, and station. In each dialog the current setting is highlighted.

Perform the following steps in order to set the units.

1. Start the Display in Service Mode.

2. From the "Setup Menu – Configuration" dialog, press the "Installation" soft key in order to list the items under the "Setup Menu - Installation" dialog.

3. Use down arrow key or the up arrow key until "Units" is highlighted.

Show/hide table



Illustration 1	g01023989

4. Press the "OK" key. By default, the "Distance Units" dialog is selected. The dialog in Illustration 1 appears.

5. Do the following as necessary from any of the "Units" dialogs.
   • Press the "Distance" soft key in order to select the distance units.

   • Press the "Speed" soft key in order to select the speed units.

   • Press the "Grade" soft key in order to select the grade units.

   • Press the "Cross Slope" soft key in order to select the cross slope units.

   • Press the "Station Format" soft key in order to select the station (chainage) format for a road design.

   • Press the "ESC" key in order to cancel and return to the "Setup Menu – Installation" dialog.

6. When any or all of the units have been set, press the "OK" key in order to save the settings and return to the "Setup Menu – Installation" dialog. You can begin to enter details such as the machine dimensions, in those units immediately.

7. Press the "ESC" key in order to exit the "Setup Menu – Installation" dialog.

   The Units are saved in the Display Settings file.

Distance

Distance values appear on the screen in the following formats.

• Meters - as "m" (default for all Display firmware files except for US English)

• International feet - as "ft"

• US survey feet – as "FT" (default for US English Display firmware)

Perform the following steps in order to change the distance units.

1. If any other unit setup dialog is shown, press the "Distance" soft key.

2. Use the down arrow key and the up arrow key in order to choose the required distance units.

Note: The DXF file format does not contain any information on the units used (feet or meters). As all DXF drawing files are unitless, use the SiteVision Office software in order to ensure that the correct units are set.

Note: If you change your units, any currently displayed Site Map and Background Plan files are reloaded. Then the Site Map and Background Plan files are displayed in the new units.

Speed

Speed can be shown in the following formats.

• Kilometers per hour - as "km/h" (default for all Display firmware files except for US English)

• Miles per hour - "mph"

Perform the following steps in order to change the speed units.

1. Press the "Speed" soft key .

2. Use the down arrow key and the up arrow key in order to choose the required units.

Grade

Grade values can be shown in the following formats:

• Percentage - as "%"

• Ratio - as "rise: run" (default)

Perform the following steps in order to change the grade units.

1. Press the "Grade" soft key .

2. Use the down arrow key and the up arrow key in order to choose the required format.

Cross Slope

Cross slope values can be shown in the following formats:

• Percentage - as "%" (default)

• Ratio - as "rise: run"

Perform the following steps in order to change the cross slope units.

1. Press the "Cross Slope" soft key .

2. Use the down arrow key and the up arrow key in order to choose the required format.

   A positive value indicates a rising cross slope as you move away from the master alignment. A negative value indicates a falling cross slope as you move away from the master alignment.

Station Format

Station (chainage) values can be shown in the following formats:

• 1000.00 (default)

• 1+000.00

• 10+00.00

• 1/000.00

Perform the following steps in order to change the station format.

1. Press the "Station Format" soft key .

2. Use the down arrow key and the up arrow key in order to choose the required format.

3. When this has been completed and the other units are set, press the "OK" key in order to save the settings and return to the "Setup Menu – Installation" dialog.

4. Press the "ESC" key in order to exit the "Setup Menu – Installation" dialog. The changes take effect immediately.