TILT COMPENSATION MODULE
Bulletin 98-01150 R1
CenterLine
Tilt Sensor Operation
The CenterLine must be loaded with software version 1.10 or higher to be compatible with the Tilt
Sensor. When operating the Tilt Sensor the position data coming from the GPS receiver will be
compensated for vehicle tilt errors and then corrected information will be sent to the console.
When the vehicle experiences a sideways tilt, any guidance information is affected: For example, if the
GPS sensor is 12 feet (3.65m) above the ground, a 10-degree tilt gives a 2-foot (0.61m) positioning
error.
Tilt Sensor Functions
There are three LEDs visible on the Tilt Sensor which indicate the following:
• Blue - Blinks two times per second when the unit is powered and
running
• Green - Steady ON when tilt correction is enabled, OFF otherwise
• Yellow - Blinks one time per second when valid GPS location data
is being received (NMEA-0183 GGA)
Tilt Sensor Mounting Recommendations
1. Mount as close to the center of the vehicle side to side as possible.
2. Mount sensor on a parallel plain to the GPS antenna so both the antenna and the
sensor tilt the same degree.
Tilt Compensation Module for CenterLine
3. Mount so the sensor is level and connector is pointing upward.
4. Sensor should be rigidly mounted to minimize vibration, because vibration will degrade
the ability to sense tilt.
5. Mid-Tech recommends using nuts and bolts or self tapping screws through the two
mounting holes on each end of the sensor.
6. The arrow on sensor decal must point toward the front of the vehicle.
7. Do NOT mount near extreme temperatures, upside down, or on its side.
Figure 1: Tilt Sensor Example
Page 1 of 2
CenterLine Settings
Once the Tilt Sensor is properly installed and connected to the Centerline, two initial setup steps must
be performed; enter an antenna height and calibrate (level) the sensor. The vehicle should be on level
ground when performing these two steps.
Antenna Height
To access Antenna Height select Setup>Guidance>Antenna>Height. Enter the height of the GPS
antenna above the ground. Initial value is 9.8ft (3m). Minimum value is 0, and the maximum value is
32.8ft (10m).
Figure 2: Setting Antenna Height
Calibrate Tilt Sensor
Once the antenna height has been entered, and the vehicle is on level ground, the sensor needs to be
calibrated (Level). To access the level feature select Tools>Level.
Highlight the Level menu item and press the enter key on the remote. The lightbar will display Wait
during calibration and then briefly display Ready when calibration is completed.
Tilt Sensor System Guide
Figure 3: Calibrating (Level) Tilt Sensor
Page 2 of 2
Loading...