Calibration of analog wind instruments – ST60, ST60+, and i60 step-by-step

Detailed guide for adjusting the pointer with self-test procedure and ensuring correct wind angles on Raymarine instruments.

If your instruments display the same data type (e.g., both set to apparent wind or both to true wind) from the same source sensor, but still show different angles, the problem is usually due to pointer calibration in the analog display. This is not the same as standard calibration for wind, rudder, or compass angle, but a low-level factory/self-test calibration not documented in the manual.

The discrepancy arises when the display believes the pointer is showing a certain angle, but the pointer physically points to another. This was a common problem with ST60 and ST60+ and sometimes occurs on i60 as well.

Why is this important?

It is almost impossible for one display to send a correct wind angle and another to receive it incorrectly – the network has error checks that prevent this. If you see a deviation, it is almost always due to the pointer's calibration, not the sensor data.

Solution – Calibrate the pointer with self-test

You need to perform a self-test procedure to calibrate the pointer's position. During the procedure, you cycle the display through angles in 30° increments and adjust the pointer to match the LCD value. Do three rounds: adjustment, fine-tuning, and verification.

Step-by-step instructions:

1. Start calibration: Press Button 1 and Button 4 for 4 seconds. When the unit beeps, immediately press Button 3 and Button 4 briefly. The unit enters self-test step 1. (Skip steps 1 and 2 for pointer calibration.)
2. Press Button 1 and Button 2 briefly to go to self-test step 2.
3. Once the pointer has made at least one full rotation, press Button 1 and Button 2 again to go to step 3.
4. In step 3, adjust the pointer's offset. The LCD shows T3 and the angle the pointer should display. Press Button 1 for large clockwise adjustments, Button 3 for counter-clockwise, and Button 4 for clockwise fine-tuning until the pointer matches the LCD value.
5. Exit and save: Press Button 1 and Button 2 for 2 seconds.

Tips for best results

• Perform calibration in calm conditions.
• Do three rounds for maximum precision.
• Check that all buttons are working before you start.