Garmin GPSMAP 225 Technical Reference page 27

To configure the wind angle filter if the menu option is not displayed:
1. Select Generic Configuration
2. Enter the following command: "ANGLEFILTER="
3. Follow the command with a number between 0 and 254, representing a time constant in increments of 0.25 second, or 255 to represent the
Automatic setting (for example: ANGLEFILTER=12).
To configure the wind speed filter:
1. Select Generic Configuration to specify data for the filter and offset settings.
2. Enter the following command: "SPEEDFILTER="
3. Follow the command with a number between 0 and 254, representing a time constant in increments of 0.25 second, or 255 to represent the
Automatic setting (for example: SPEEDFILTER=215).
Technical Reference for Garmin NMEA 2000 Products
to specify data for the filter and offset settings.
NMEA 2000-Certified Sensor Configuration Information
2