COUNTDOWN TIMER
A. Press
to increase MINUTES. Hold to increase rapidly up to 99
minutes.
B. Press
, countdown begins. You may switch to another mode
without affecting timer. (hourglass symbol appears in TIME OF DAY
window while timer is counting.) Even in another mode, timer will
beep when it reaches zero. Press any button to cancel beep.
C. To stop timer, press
(MUST BE IN TIMER MODE).
D. Press
to continue, or press
to reset timer to original setting.
COMPASS CALIBRATION
IMPORTANT: Watch must be calibrated before using to find directions!
This product incorporates the magnetic sensor technology of
PRECISION NAVIGATION, INC., Mountainview, CA.
A compass works with the Earth’s magnetic field; therefore you must
not be in or near large metallic objects
(such as automobiles,
bridges, etc.) or objects that give off electromagnetic radiation (such
as TV sets), which could interfere with the watch’s calibration or use.
You cannot calibrate or obtain accurate readings from inside buildings, trains, or airplanes.
Typical accuracy of wrist-worn instruments is /- 10 degrees. To optimize accuracy, an
optional two-step calibration is recommended, and discussed in further detail below. In cali-
brating and taking subsequent headings, it is important as with all compasses, to maintain a
level plane relative to the earth’s horizon. Performing calibration or taking a heading when the
watch is not level can result in large heading errors.* Care must also be taken to avoid areas
which may exhibit higher than normal concentrations of hard and soft iron. This is especially
true given the relatively weak magnetic field of the earth, relative to other sources of magnetic
fields. Failure to do so can result in inaccurate headings. Whenever a heading value is suspect,
a new calibration should be performed. It is also recommended that calibration be performed
in the intended area of use, or when the watch has been stored for an extended length of time.
Care should be taken to avoid storing the watch near any source of magnetism (computers,
appliances, TV’s, etc.), as the watch can take on a magnetic charge and render subsequent
headings inaccurate. When the watch is suspected of having taken on a magnetic charge, a
new calibration should be performed.
Applying good maintenance procedures, periodic calibration, and observing the guidelines as
outlined above will help to insure headings are accurate to within the limitations of the imme-
diate environment.
A. To calibrate for magnetic north, press
HEADING
(from TIME OF DAY mode only) once to
view direction. (If the watch has not yet been calibrated, you will see HOLD TO CAL instead
of direction.) Press and hold
HEADING
until ROTATE WATCH TWICE appears in display
B. Hold watch level relative to the horizon (on your wrist, in your palm, or on a non-metallic
table). Rotate watch slowly two complete rotations (taking at least fifteen seconds per rota-
tion). Press MODE when finished.
(Two-step calibration: Upon completion of STEP A, press
HEADING
. Do not enter a value for
declination angle. While in TIME OF DAY mode, press
HEADING
. A heading will be displayed.
Noting heading value, adjust watch position for heading of 150 degrees. Initiate calibration by
pressing and holding
HEADING
until
ROTATE WATCH
Twice is displayed. Repeat calibration
procedure as discussed in Step A. At completion of calibration proceed normally to Step C.)
Split Timing
A. Begin timing--press
as above. Press
to temporarily freeze display and measure a
split. Lap # will show in upper display, watch will continue counting.
B. Press
to resume showing running lap.
C. When event ends, press
. Watch will end timing. Display will show final split time (total
event time).
D. Press/hold
to reset chronograph to zero.
NOTE:
To pause during split timing (time is not accumulating), press
. Press
to resume,
or press/hold
to reset to zero. Displays minutes, seconds and hundredths up to 100 min-
utes (99:59.99).
CHRONOGRAPH
A. Press
to begin timing.
NOTE:
You can leave CHRONOGRAPH mode while it is running. In
TIME OF DAY mode, stopwatch icon on left side of middle display
indicates chronograph is running.
B. Press
to stop.
C. Press
to resume timing OR Press and hold
to reset.
