Casio 2891 Operation Manual page 8

❚ To perform 2-point calibration
1.
Compass Mode
In the Timekeeping Mode,
A A A button to
press the A A
enter the Compass Mode.
Direction in Degrees
2.
Hold down the E E button E E E
for about two seconds
until "–1–" appears on the
display
• This is the 2-point calibration
screen.
(2 seconds)
How to use the digital compass
❚ Determining Your Current Location
You can find out your current location by using the compass to read
the directions to two known landmarks, and then determining where
two lines, drawn in accordance with the directions, intersect on a map.
1.
Find the two landmarks, read the directions to them, and record
the readings in memory.
A
B
2.
Recall the readings and draw lines on a map from the two
landmarks. Your current location will be where the two lines
intersect.
N
B
A
W
S
Operation Guide 2891
3.
While "–1–" is on the
display, hold the watch so
it is horizontal and press
the A A button to calibrate A A A
the first direction.
• When calibration is
successful, "OK" will appear
on the display followed by
"–2–" to indicate calibration of
the second direction.
• Do not move the watch while calibration of either direction is
being performed.
• "– – –" is on the display while calibration of a direction is being
performed. If "– – –" does not appear when you press the A
button, wait for about three seconds and then press the A
button again.
Rotate 180 degrees
4.
While "–2–" is on the
display, rotate the watch
so it is pointing 180
degrees opposite of the
first direction, and then
press the A A A A button to A
calibrate the second
direction.
• When calibration is
successful, the watch will exit
the calibration screen and
return to the compass screen.
❚ Making Your Way to an Objective
When you cannot see the objective
1.
Find the objective on a map.
Objective
Example: When the objective
is northeast (NE)
from your current
location
Current location
2.
Use the watch to perform occasional direction readings as you
make your way towards your objective.
Northwest
E
This screen indicates that the direction to your objective is at
3 o'clock.
❚ To perform northerly calibration
1.
In the Timekeeping Mode,
A A A button to
press the A A
enter the Compass Mode.
2.
Hold down the E E button E E E
for about two seconds
until "–1–" appears on the
display. Next, press the D
button so "–N–" is
displayed.
• This is the northerly
calibration screen.
When you can see the objective
Point 12 o'clock at the objective and then perform a direction reading operation. This
will tell you the direction to the objective.
Now you can perform occasional readings to make sure you are headed in the right
direction, even if you can no longer see your objective.
❚ Memorizing a Location
To memorize a specific location on the ocean, take readings on the directions to two
fixed distant landmarks. After that, you will be able return to that location by taking
readings of the directions to the same two landmarks.
North
Northeast
Compass Mode 3.
Holding the watch so it is
horizontal, point 12
o'clock north and then
press the A A A A button. A
• When calibration is
successful, "OK" will appear
on the display and the watch
will return to the compass
screen.
Direction in Degrees
If "ERR" appears
"ERR" indicates that an abnormal value was detected
because the watch was moved during calibration or due to
some other reason. If this happens, perform the calibration
procedure again from the beginning.
D D D
D
• Take care that you do not move the watch while calibration
is being performed.
• If "ERR" or "– – –" (abnormal value detected) keeps
appearing when you try to perform calibration, it could
(2 seconds) mean that there is a strong source of magnetism close by. If
this happens, move to another location and try performing
calibration again.
Favorite fishing point
North
8