The AccuGrade Display expects specific components to be connected to the system. The connected components will be based on the system configuration. The "Diagnostics" option is used for determining and monitoring the operational status of the connected devices.
Illustration 1 shows the physical layout of the AccuGrade Display. Refer to this Illustration for the location of the keys that are discussed within this section.
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| Illustration 1 | g01290651 |
(1) LCD screen (2) Soft key labels (3) Soft keys (4) Next key (5) Escape key (6) Zoom-in key (7) Data card slot access door (8) Menu key (9) Arrow keys (10) OK key (11) Zoom-out key (12) Power key | |
Checking the System Diagnostics
Note: If any device does not respond while the system is in operation, then the following message appears:
"Some of the required system devices are not responding. Press OK to check the details in the Diagnostics item of the Setup Menu, or press ESC to continue."
If you want to find out additional details, then continue below. If you do not want any additional information at this time, press the Escape key (5) .
Perform the following steps in order to access the "Diagnostics" dialog:
- From any guidance screen, press the Menu key (8). The "Setup Menu - Configuration" screen appears.
- Scroll to the "Diagnostics" option. Use the arrow keys (9) .
- Press the OK key (10). A diagnostics screen that is similar to Illustration 2 appears.
The screen displays a list of devices that are currently connected to the AccuGrade system. The following devices are included:
CD700 - GPS Display
MS9xx - GPS Receiver
AS400C - Drum Slope - Drum Slope Sensor
TCxxxC - Data Radio
MC024 - Microcontroller for Compaction
Note: Refer to Troubleshooting, "Controller" for a detailed procedure for troubleshooting the MC024 Microcontroller.
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| Illustration 2 | g01517735 |
- Press the "Recheck" soft key in order to recheck whether all the system devices are connected and responding.
Note: The "Recheck" soft key must be configured by your on-site supervisor in order for the key to be displayed on the "Diagnostics" screen. If this soft key does not appear, then perform the following in order to refresh the screen. Exit from the "Diagnostics" screen and then enter the "Diagnostics" screen again.
The "Diagnostics" dialog reports the following information for each listed device:
- Device name
- Device status
- Application firmware version
- Loader firmware version
Note the application firmware number. This number is used in order to determine whether a device is connected, and whether the application firmware is current. The application firmware must be the correct version before the device can be used in the system. When none of the devices display "old version", then the system can be used.
Note: With some older radios, the diagnostics are unable to report a version number, but the system is still usable.
The status will be one of the following:
Connected - No problems are noted
Configuration failed - The device was detected. An error has occurred.
Not Found - The device was not detected.
If the system cannot find a device, then the system cannot be used.
Note: The "App" column displays the firmware version number if the detected number is at least the minimum version required. If either the firmware or the loader is outdated, then the device will be detected, but the system cannot be used until the device firmware is updated.
Checking GPS Status
Press the "GPS" soft key in order to view the status of the GPS receiver and examine the quality of the GPS solution.
GPS Receiver Screen
If you select the "Receiver" soft key, then a "Diagnostics - GPS" screen similar to the one shown in Illustration 3 appears.
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| Illustration 3 | g01291100 |
In order to return to the "Setup Menu – Configuration" dialog, press the Escape key (5) .
The following items can be found on this screen:
Satellites: Used: - This value reports the number of satellites that are visible at both the base station and machine, and that are also used to compute the current GPS position solution.
Note: Five or more satellites are required for the system to initialize. Four are more satellites are required in order to continue working.
Satellites: PDOP: - The Position Dilution of Precision is an indicator of the satellite geometry and the effect this geometry has on the quality of the GPS position solution. A small PDOP results in greater precision than a larger PDOP. The minimum value is 1.0. The default maximum allowed is 7.0.
SVs Tracked with Signal L1: - This value indicates the number of GPS L1 signals that are being received at both the base station and the machine.
SVs Tracked with Signal L2: - This value indicates the number of GPS L2 signals that are being received at both the base station and the machine.
SVs Tracked with Signal G1: - This value indicates the number of GLONASS L1 signals that are being received at both the base station and the machine.
SVs Tracked with Signal G2: - This value indicates the number of good quality GLONASS L2 signals that are being received at both the base station and the machine.
GPS error (<units>): - The GPS Error is an estimate of the current GPS error in the horizontal and vertical directions.
GPS mode: - The GPS Mode indicates the type of GPS solution that is being used.
RTK position status: - This value represents the quality of the RTK position solution. The field will contain an "OK" if the system is working correctly.
RTK search status: - This value represents the status of the RTK initialization. The field will contain an "OK" if the system has initialized and is working in RTK Fixed mode.
Data Link Screen
If you select the "Data Link" soft key, then a "Diagnostics - GPS" screen that is similar to the one shown in Illustration 4 appears. The "Data Link" screen reports the data radio statistics for the Compact Measurement Record (CMR) messages that the machine is receiving from the base station.
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| Illustration 4 | g01291101 |
In order to return to the "Setup Menu – Configuration" dialog, press the Escape key (5) .
The following items can be found on this screen:
Integrity: 100 s: - This value is the percentage of valid CMR messages received in the last 100 seconds.
Integrity: 15 min: - This value is the percentage of valid CMR messages received in the last 15 minutes.
Integrity: 3 hrs: - This value is the percentage of valid CMR messages received in the last 100 seconds.
Latency: - This value is the latency (age) of the CMR correction that is being used.
GPS base station: - The response "Information received" indicates that the GPS base station has broadcast its position.
Note: The GPS base station position is required in order to initialize the system.