W-215
COMPASS CALIBRATION
Since a compass uses the earthÕs magnetic field, be aware of large metallic objects, such as vehicles or bridges, or objects that give off electromagnetic radiation, such as TVs or PCs, which could affect the magnetic field around the watch. If compass is calibrated near such objects, it will only work properly in that location. If compass is calibrated away from such objects, it will not work properly near them. For best results, calibrate in area of intended use.
Also avoid areas that may exhibit higher than normal concentrations of hard and soft iron, as they may cause inaccurate headings. Whenever a heading is suspect, recalibrate.
In calibrating and taking headings, it is important, as with all compasses, to keep compass level. Calibrating or taking a heading when watch is not level can result in large errors. To keep watch level, hold watch so that bubble is centered in bubble level window.
Do not store watch near any source of magnetism, such as computers, appliances, or TVs, as watch can take on a magnetic charge, yielding inaccurate headings.
To calibrate compass, keep watch level or place on level surface (if band interferes, place on inverted cup) for entire procedure. Watch may be face down, but take care to protect watch face. Go to Compass mode and then press and hold SET. While level, SLOWLY rotate watch two revolutions, taking at least 15 seconds per revolution. This is critical in achieving proper calibration. To help you rotate watch at proper speed, a block is shown at perimeter of display; rotate watch at a speed to keep block pointed in same direction. When done, press MODE, keeping watch level. Watch displays current declination angle setting (see DECLINATION ANGLE for more information). If you do not wish to set declination angle, press DONE. Otherwise, press + or - to select declination angle and then press DONE.
COMPASS
Compass mode provides an electronic compass reading. Press MODE repeatedly until COMP appears.
Compass must be calibrated prior to use and calibration should be done in area of intended use; see COMPASS CALIBRATION. If compass has not been calibrated since battery replacement, watch displays PLEASE CAL, reminding you to calibrate.
While holding watch level, using bubble level, press START/SPLIT or STOP/RESET to activate compass. Watch displays heading in direction of
12 oÕclock and virtual needle (one block at head and three blocks at tail) points north. If watch is turned, heading updates and virtual needle rotates, always pointing north. After 20 seconds, compass will automatically turn off to conserve battery life. Press button again at any time to keep compass on for another 20 seconds.
NOTE: While compass is on, INDIGLO¨
USING THE COMPASS
Once compass is activated, as described above, there are two typical ways to use virtual needle and turning compass ring.
Which way am I headed? Hold watch so that 12 oÕclock is in direction of your travel. Turn compass ring until virtual needle is pointing to north on ring. Your heading is direction on ring at 12 oÕclock. This should be the same direction shown on display.
Which way should I go? If you know the direction you want to go (e.g., NE), turn compass ring until that direction appears at 12 oÕclock. Hold watch so that you are facing 12 oÕclock. Then, turn your body until virtual needle points to north on compass ring. You are now facing the direction you want to go.
DECLINATION ANGLE
A compass detects Òmagnetic north,Ó which may be slightly different from Òtrue north,Ó which is used on maps. This difference, called the Òdeclination angle,Ó which varies around the globe, is typically small and can be ignored in many cases. However, you may have watch automatically compensate by setting your declination angle after compass calibration; see COMPASS CALIBRATION. With proper declination angle set, heading will be more accurate and virtual needle will point to true north.
Declination angles for major world cities (W is negative and E is positive on declination scale).
Anchorage . . . | .22E | London | . .4W | Rio De Janeiro . . . | 21W |
Atlanta | .4W | Little Rock . . . . | . . .3E | San Francisco . . . | .15E |
Bombay | .1W | Livingston, MT | . .14E | Seattle | .19E |
Boston | 16W | Munich | . . .1E | Shanghai | .5W |
Calgary | 18W | New York City . | .14W | Toronto | 11W |
Chicago | .3W | Orlando | . .5W | Vancouver | 20W |
Denver | .10E | Oslo | . .2W | Washington DC . . | 10W |
Jerusalem . . . | . .3E | Paris | . .2W | Waterbury, CT . . . | 14W |
For further declination angle information, see www.timex.com/expedition
2 | www.timex.com |
