Comp – compass, City declination angle – Highgear AltiTech 1 User Manual
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COMP – Compass
Setting Up
To successfully complete the calibration of the compass you will need a flat
non-metal surface in an open area, away from computers, magnets, and large
metal structures. Resist the temptation to calibrate the compass inside your
house!
1. Press B1 until COMP is displayed (see Changing Modes).
Once in compass mode, press and hold B4 until “CAL” appears.
Please note: if AltiTech already reads “CAL” then proceed to step 2.
2. Slowly rotate the unit clockwise two complete rotations on a flat level
surface. Each rotation should take at least 15 seconds.
3. Now press B4 to end the calibration and enter the declination angle.
Declination Angle
The earth’s magnetic field doesn’t perfectly line up with what we think of as True
North. A compass points to magnetic North, not to geographic North or True
North. The deference between magnetic North and True North is declination. You
can adjust the declination on the AltiTech so that it points to True North.
4. Find the declination angle on the chart below, or by going online to
http://www.ngdc.noaa.gov/ (Click on geomagnetism).
5. The tens digit of the angle is flashing.
Enter the angle by using B2 (-) and B3 (+). If the angle is a single
digit (for instance, 8 degrees), enter zero. When you have set the
first digit, press B1 and repeat for the second digit.
6. Press B1 again and now set the declination to East or West
with B2 and B3.
7. Press B1 again. Now press B4.
AltiTech displays END CAL and then the compass.
Using the Compass
Press B3 to display the current bearing. In addition to forward direction displayed
at the top, and the bearing angle displayed in the middle, the AltiTech also
displays three lines together around the outside of the display to show South and
one line to show North.
The compass will display for 10 seconds and then return to displaying ----. This helps
to extend battery life. You can hold B3 to get a continuous display. When you
release B3, the AltiTech continues to display the compass for 10 additional
seconds.
You may choose to use the rotating bezel (silver circle around the display) to align
with the display. You can also use the bezel as an aide for navigation.
City
Declination Angle
Anchorage
22 E
Atlanta
4 W
Bombay
1 W
Boston
16 W
Calgary
18 E
Chicago
3 W
Denver
10 E
Jerusalem
3 E
London
4 W
Little Rock
3 E
Livingston, MT
14 E
Munich
1 E
New York City
14 W
Orlando
5 W
Oslo
2 W
Paris
2 W
Rio De Janeiro
21 W
San Francisco
15 E
Seattle
19 E
Shanghai
5 W
Toronto
11 W
Vancouver
20 E
Washington DC
10 W
Waterbury, CT
14 W
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