Garmin eTrex Summit Manuale

40

Calibrating the Compass and Altimeter

The ‘CALIBRATE’ selection on the MENU Page allows the Electronic Compass and the 

Altimeter to be calibrated for the most accurate performance. 

The procedure for calibrating the Electronic Compass is covered on page 2. The compass 

must be calibrated every time that the batteries are changed. The compass will not be accu-

rate if used in a car or around items radiating magnetic fields. When using the compass, hold 

the unit as level as possible for optimum performance. 

The eTrex Summit calibrates the altimeter automatically using GPS altitude.  If you know 

the exact current elevation or barometric pressure, you can calibrate the altimeter manually. 

1.  With the MENU Page displayed, highlight ‘CALIBRATE’ and press ENTER.
2.  Press the UP or DOWN button to highlight ‘ALTIMETER’, then press ENTER.
3.  The message ‘DO YOU KNOW THE CORRECT ELEVATION?’ is displayed. Press the UP or 

DOWN button to select  ‘YES’ or ‘NO’, then press ENTER.

4.  If you selected ‘YES’— the ENTER CORRECT ELEVATION Page is displayed. Press the 

DOWN button to move the highlight to the next number in the elevation field. With the 

desired digit selected, press ENTER to activate the drop down number list. Press the UP 

or DOWN button to select the correct number, then press ENTER. When all numbers are 

entered correctly, highlight ‘OK’ and press 

ENTER.  A message ‘CALIBRATION COM-

PLETED SUCCESSFULLY’ is displayed. Highlight ‘OK’ and press

 ENTER.

  If you selected ‘NO’—you will be asked ‘DO YOU KNOW THE CORRECT BAROMETRIC 

PRESSURE’.  Press the 

UP or DOWN button to select  ‘YES’ or ‘NO’, then press ENTER.

  If you selected ‘YES’— the ENTER CORRECT PRESSURE Page is displayed. Use the 

DOWN button to move the highlight to the next number in the pressure field.  With the 

desired digit selected, press ENTER to activate the drop down number list. Press the UP 

or DOWN button to select the correct number, then press ENTER. When all numbers are 

entered correctly, highlight ‘OK’ and press ENTER.  A message ‘CALIBRATION COM-

PLETED SUCCESSFULLY’ is displayed. Highlight ‘OK’ and press ENTER.

Calibration Page