How to Set Up an AB Curve on Your John Deere Generation 4 Display

Setting up an AB Curve on your John Deere Generation 4 Display allows your equipment to follow a precise curved path in the field, which can be especially useful for working along field edges, ditches, or irregular boundaries. This article walks you through the process, shows how to name your tracks for easier management, and answers common user questions.

What Is an AB Curve?

An AB Curve is a guidance line that helps your tractor or implement follow a curved path. Unlike straight AB lines, these are ideal for fields with non-linear boundaries or for specific working patterns along features such as ditches or waterways.

Why Use a Unique Track Name?

Giving each AB Curve a unique track name makes it easier to:

• Identify specific curves for different fields or conditions.

• Recall and reuse guidance paths without confusion.

• Save time when switching between jobs or returning to a previous field.

How to Set Up an AB Curve: Step-by-Step

1. Access Track Setup

   • On your Generation 4 Display, select Set Track.

2. Create a New Track

   • Choose New Track to start the process.

3. Select Curve Track Type

   • Select Curve Track from the available options.

   • Choose AB Curve as your guidance pattern.

4. Name Your AB Curve

   • Assign the curve a unique name—e.g., "Along Ditch" for curves created to follow a ditch.

   • If you skip naming, the system will default to generic names (Track 1, Track 2, etc.), which makes future identification harder.

5. Assign Track to Field

   • The AB Curve will be automatically assigned to the currently set up field.

6. Begin Recording the Curve

   • Return to the guidance screen.

   • Hit Start to begin recording your AB Curve.

   • As you move, a blue line will appear behind the tractor to show the recorded path.

7. Use the Pause Feature for Straight Sections

   • If you come to a straight portion of your route, use Pause to temporarily halt curve recording.

   • A dotted line will appear to show paused sections.

   • When ready, select Record Curve to resume.

   • The previously dotted section will fill in as a straight AB segment.

8. Continue and Complete

   • Continue recording your curve as needed, pausing and resuming for different field sections.

   • When finished, select Done—the display will draw out the AB Curve across the rest of the field.

   • Your AB Curve is now ready for use!

Common Questions

Q: Can I pause and record in the middle of a curve?

• Yes! Use the pause feature whenever you want to switch from curved to straight paths within the same guidance line.

Q: Can I edit the curve track later?

• You can always name new curves or create different tracks for separate field conditions. However, modifying a completed curve may require creating a new track.

Q: How do I find my saved AB Curves?

• Named curves are easy to locate in the display's guidance track list. Generic tracks are harder to identify, so naming is recommended.

Q: What if my field changes?

• You can create and store multiple AB Curves for the same field, adjusting for changes or new features.

Example Use Case

Suppose you're spraying along a winding ditch on the edge of your field. Create an AB Curve named "Along Ditch," follow it as you work, and save it for next season. When you return, simply select "Along Ditch" from your track list to quickly begin guiding your implement along the exact same path.