Garmin eTrex Summit Owner's Manual (Software Version 3.00 and above) &nbs - Page 54

To manually calibrate the altimeter

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Menu Page Calibration Page 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 accurate 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. Calibration Page The eTrex Summit can automatically calibrate the altimeter using GPS altitude. For optimum performance of the Altimeter, you should perform the calibration procedure entering either the correct elevation or barometric pressure. 40 To manually calibrate the altimeter: 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 COMPLETED 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 COMPLETED SUCCESSFULLY' is displayed. Highlight 'OK' and press ENTER.

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40
Menu Page
Calibration Page
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.
To manually calibrate the altimeter:
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
.
The eTrex Summit can automatically calibrate the altimeter
using GPS altitude.
For optimum performance of the
Altimeter, you should perform the calibration procedure
entering either the correct elevation or barometric pressure.
Calibration Page