Casio 3554 Operation Manual page 44

The watch takes altitude readings every
●
second for about the first three minutes.
After that, it takes readings according to
the watch's auto measurement interval
setting.
Check the information at the link below
●
to find out how to configure the auto
measurement interval.
Setting the Auto Measurement
l
Interval
To retrigger measurement, press (C).
●
To return to the current time screen,
●
hold down (E) for at least one second.
Note
Measurement range: -10,000 m to
●
10,000 m (-32,800 to 32,800 feet)
(Measurement unit: 1 meter (5 feet))
Note that calibrating altitude readings
will cause a change in the
measurement range.
[- - - - -] appears for the measured value
●
if it is outside the allowable range.
Setting a Reference Altitude
and Taking Altitude
Differential Readings
You can use the procedure below to display
the differential between a reference altitude
and another altitude. This makes it easy to
measure the altitude differential between two
points while climbing or trekking.
1.
Use the contour lines on your map to
determine the altitude differential between
your current location and your destination.
2.
Take an altitude reading of your current
location.
Checking the Current Altitude
l
3.
Hold down (A) for at least two seconds.
This displays the altitude measurement
setting screen.
Pointer
Watch Operation Guide 3554
4.
Use (A) and (D) to move the pointer to
[DIFF RESET].
5.
Use (C) to set your current location's
altitude as the reference altitude.
After the setting operation is complete, a
check mark appears for a few seconds,
and then the altitude measurement
setting screen re-appears.
6.
Press (E).
This returns to the altitude measurement
screen.
7.
While comparing the difference between
the altitude you found on the map and the
altitude differential displayed by the
watch, advance towards your destination.
When the altitude differential you found
●
on the map is the same as that
displayed by the watch, it means you
are close to your destination.
Note
[- - - - -] is displayed when a reading is
●
outside the allowable altitude
measurement range (±3,000 m
(±9,840 feet)) or if a measurement
error occurs.
Altitude differential indicator
Current location altitude
Calibrating Altitude
Readings
To minimize the difference between locally
indicated and measured values, you should
update the reference altitude value before
setting off on and during treks or any other
activities where you take altitude readings.
Also, you can ensure accurate measurements
by checking a map local altitude indications or
some other source for your current location's
altitude, and regularly calibrating watch
readings with the latest information while
mountain climbing.
Note
You can find out the altitude at your
●
current location from signs, maps, on
the Internet, etc.
Differences between actual altitude
●
and watch readings can be caused by
the factors below.
Changes in barometric pressure
ー
Changes in temperature caused by
ー
variations in barometric pressure
and by elevation
Though altitude readings can be taken
●
without calibration, doing so may
produce readings that are very
different from indications by altitude
markers, etc.
1.
Display the current time screen.
Watch Mode
l
2.
Use (A) and (D) to select [ALTIMETER].
3.
Press (C).
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