Trimble nt300d manual

The image is shown as though you are looking down on the vehicle from above. The top of the screen represents the direction of the nose of the vehicle. The buttons circled in Figure 3. If the yaw, pitch, and roll values are changed directly, the representation of the controller will update to reflect these new values.

Read and understand the complete documentation before attempting this procedure. Antenna height With the tractor on a flat, level surface, measure the distance from the ground to the base of the GPS receiver or antenna. Enter this value into the Antenna Height Above Ground field. Antenna forward With the tractor on a flat, level surface, measure the distance from the fixed axle to the center of the GPS receiver or antenna. Enter this value into the Antenna Distance from Fixed Axle field.

Enter a negative value if the GPS receiver antenna is to the rear of the fixed axle. The nose of the vehicle is considered the forward direction. Roll correction procedure: tire track offset method B Tip — Trimble recommends that you use a highly repeatable GPS correction mode for roll correction. If you do a roll calibration with less accurate GPS correction modes, repeat the measurements at least four times to ensure a more consistent result.

To use the tire track offset method to calculate roll correction: 1. Remove any implement from the tractor for this test. Drive the tractor to a relatively flat field where soil conditions will make tire impressions visible and where passes of at least m ft in length can be made. Reset the Roll Offset value to 0 zero before performing the procedure. Create an AB Line. The job file does not have to be stored. To create a clean set of tire tracks in the field, start a new pass away from the area where the AB Line was created.

Engage automatic steering mode when the system is stable and allow the Autopilot system to complete the pass. At the end of the pass, turn the tractor around to return along the same pass from the opposite direction. Engage automated steering mode and allow the system to complete the pass.

At the end of the return pass, stop the tractor and confirm that its current position is directly on the AB line there is no cross track error.

Park the tractor and exit the cab to evaluate the tire track pattern between the first and return paths. Measure the difference between the track passes and record the distance in inches. Also note whether the return pass is to the left or the right of the original pass. Record the results in the table in Table 3. Note — The offset should be consistently to the left or right. Repeat Steps 5—10 two more times for a total of three test runs.

Record the offset distance in inches and the left or right direction of offset for each test run in the table in Table 3. The tractor drawbar must be centered for this procedure. Drive the tractor to a relatively flat area where you can makes passes that are at least m ft in length. Reset the Roll Offset value to 0 zero on the Roll Correction screen before performing the procedure.

Start a new pass. Engage automatic steering mode when the system is stable. Stop the tractor midway through the pass. Confirm that the current tractor position is directly on the AB Line there is no cross track error. Park the vehicle and exit the cab. Use the hitch pin hole in the drawbar as a guide to insert a flag in the ground to mark the tractor centerline for this pass. Complete the pass with the tractor. Turn the tractor around to return along the same pass from the opposite direction.

Engage automatic steering mode. Stop the tractor midway down the pass with the drawbar pin location very close to the marker flag. Park the tractor and exit the cab. Use the hitch pin hole in the drawbar as a guide to insert a second flag in the ground to mark the tractor centerline for this pass.

Note whether the second pass is to the left or the right of the first pass. Measure the difference between the flag markers for the two passes and record the distance in inches. Also record whether the return pass is to the left or the right of the original pass. Record the results in the table in Step 3. Average the results of the three runs: total the offset distances from the three passes and divide by 3. Table 3. Consult the Roll Offset Table below. Locate your antenna mounting height in the column across the top of the table.

Locate your average offset distance in the column on the left of the table. The value where the two columns intersect is your Roll Offset value. If the value is a left offset, enter the value as a positive. Incorrect adjustment of this calibration setting could result in the failure of this critical safety feature. Note — The Manual Override Sensitivity calibration is only valid for those platforms employing a pressure transducer for the manual override function.

The AgGPS Autopilot Toolbox II software automatically detects whether or not the vehicle configuration includes this type of sensor, and provides this option if required. The Manual Override Sensitivity slider controls how quickly the manual steering override feature reacts if the driver turns the steering wheel. To adjust the setting, move the slider to the left increase sensitivity or right decrease sensitivity.

The value to the right of the slider shows the current setting. The total range is 0. If you change the slider setting, the new setting is transmitted to the Autopilot controller when you click the OK button.

Set up the Autopilot system with a job loaded and tracking live satellites. With the vehicle not moving, engage the system into automatic mode. Turn the steering wheel and assess whether the manual override feature is at an acceptable level of sensitivity. The criteria generally used includes evaluating how far and how rapidly the steering wheel needs to be turned before the manual override function causes the system to be disengaged.

If the steering wheel has to be turned too far or too rapidly, use the calibration slider to increase the sensitivity of the function. If the manual override function is activated even for incidental contact i. Use the above method to re-evaluate each new setting. For example, you can turn on the auxiliary hydraulics while you evaluate the manual override sensitivity. Trimble strongly recommends that this calibration be performed only if it is determined that the default sensitivity is unacceptable under all conditions.

Be very careful not to choose a sensitivity setting that is either too sensitive or not sensitive enough. In either case the manual override function may cease to function properly if misadjusted. On some platforms, it may be possible to set the sensitivity so low that the manual override function will not detect any steering wheel motion.

Avoiding this case should be a top priority. The steering sensor and dead zone are required. The steering sensor calibration must be performed first. Steering sensor The steering sensor calibration is required to convert the voltage output of the steering sensor into an equivalent steering angle measurement. Note — Complete this calibration before attempting to calibration the steering deadzone, pgain, or roll correction procedures.

To run the steering sensor calibration: 1. Click the Next button under the Sensor Angle field. The Sensor Volts field updates as you turn the steering wheel. Click the Next button under the Sensor Volts field to continue. If the steering wheel is not turned to the full left position, or if the steering sensor requires adjustment or replacement, an error message appears.

If the steering wheel is not turned to the full right position or if the steering sensor requires adjustment or replacement, an error message appears. Click the Next button to continue, or click the Restart button to discard the last calibration and to return to Step 1.

In order to properly configure the NTD to work with Carlson Field, it must first be powered up in Setup mode by holding down the [Setup] button on the front panel of the receiver while powering it on so that the advanced setup options are available. The final option, Remote Select, should be set to Primary. All other values in all menus ought to either be left at their default settings, or configured as necessary to the local conditions in the case of antenna height, etc.

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