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10. To enter new reference marks at the end of the current field or to change reference
marks: Pres the MENU button to display ‘CLR A-B’. Clear the current reference
marks by pressing the SELECT button.
NOTE:
If your GPS receiver is outputting 10 messages per second, you may notice
that as you move over bumps and dips in the field, the steering LED’s change
rapidly. This is because the GPS antenna is moving from side to side and with
10 updates per second the receiver sees this as a change in position. (This
problem shows up more at lower speeds). For better accuracy, do not chase
the LED’s but try to center them across the display.
Clearing the A-B line
From the ‘CLR A-B’ menu screen, press the SELECT button to clear the A-B line. You will
have to enter new ‘A’ and ‘B’ marks to begin your next swathing operation. Clearing the A-B
line also clears the Save Position (SAV POS).