Units
Use the [Up] and [Down] keys to highlight either Distance or Degrees. Use the [Tab] key to select the units of measurement.
Use [Enter] to accept the changes and return. Use [Back] to return without making changes.
Contrast
Press the [Contrast] key to display the contrast screen. Use the [Up] and [Down] arrow keys to adjust the contrast. Press the [Contrast] key again to turn the backlight on or off.
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