Altitude Reading Precautions; Barometric Pressure Measurement; Checking The Current Barometric Pressure; Checking Changes In Barometric Pressure Over Time - Casio 5602 Operation Manual

Altitude Reading
Precautions
Effects of Temperature
When taking altitude readings, take the steps
below to keep the watch at as stable a
temperature as possible. Changes in
temperature can affect altitude readings.
Take readings with the watch on your wrist.
●
Take readings in an area where
●
temperature is stable.
Altitude Readings
Do not use this watch while skydiving, hang
●
gliding, paragliding, gyrocopter flying, glider
flying, or engaged in other activities where
altitude changes suddenly.
Altitude readings produced by this watch
●
are not intended for special-purpose or
industrial level use.
In an aircraft, the watch measures the in-
●
cabin pressurized air pressure, so readings
will not match altitudes announced by the
crew.
Altitude Readings (Relative Altitude)
This watch uses International Standard
Atmosphere (ISA) relative altitude data
defined by the International Civil Aviation
Organization (ICAO). Barometric pressure
generally becomes lower as altitude
increases.
Correct measurement may not be possible
under the conditions below.
During unstable atmospheric conditions
●
During sudden temperature changes
●
After the watch has been subjected to
●
strong impact
Barometric Pressure
Measurement
You can use the Barometer Mode to take a
reading of the barometric pressure at your
current location, and to track reading changes
and trends.
Important!
Check the information at the link below
●
to find out how to ensure correct
readings.
Barometric Pressure Reading
l
Precautions
Operation Guide 5602
Checking the Current
Barometric Pressure
1.
Enter the Barometer Mode.
Navigating Between Modes
l
Entering the Barometer Mode starts
measurement, and displays the
barometric pressure at your current
location and a barometric pressure graph.
After you enter the Barometer Mode,
●
the watch takes readings about every
five seconds for three minutes. After
that, a measurement is taken about
every two minutes or every five
seconds.
You can change the measurement
interval, if you want.
Changing the Measurement Interval
l
of the Barometric Pressure Graph
You can navigate between display
●
screens by pressing (E).
Checking Changes in Barometric
l
Pressure Over Time
Barometric pressure graph
Barometric pressure
To retrigger measurement, press (C).
●
To return to the Timekeeping Mode,
●
hold down (D) for at least two seconds.
Note
When you enter the Barometer Mode,
●
the second hand will indicate either
timekeeping seconds, or the
differential between barometer
measurements (whichever was
indicated the last time you were in the
Barometer Mode).
You can change what information is
indicated by the second hand.
Checking the Change in
l
Barometric Pressure between
Two Readings
The watch will automatically return to
●
the Timekeeping Mode from the
Barometer mode if you do not perform
any operation for about one hour.
The measurement range is 260 hPa to
●
1,100 hPA (7.65 inHg to 32.45 inHg) (1
hPa (0.05 inHg) units). [- - -] will appear
for the measured value if it is outside
the allowable range.
E
Barometric pressure graph
Checking Changes in
Barometric Pressure Over
Time
The watch can be configured to show a graph
of pressure readings taken every two hours or
every two minutes.
You can display a graph of barometric
pressure readings for the past 20 hours or the
past 20 minutes. The square (
v
right of the graph indicates the latest
barometric pressure reading.
Two-hour measurement interval
Barometric pressure
(1 hPa per division)
Time
(2 hours per division)
Two-minute measurement interval
Barometric pressure
(0.1 hPa per division)
Time
(2 minute per division)
Changing the Measurement Interval of
●
the Barometric Pressure Graph
You can select a measurement interval of two
hours or two minutes for the barometric
pressure graph.
1.
Enter the Barometer Mode.
Navigating Between Modes
l
2.
Hold down (E) for at least two seconds.
Keep the button depressed when [SET]
starts to flash. Release the button when
[SET] disappears from the display.
This displays the current barometric
pressure and enters the Barometric
Pressure Offset Mode.
3.
Press (D) twice.
) at the far
22