Citizen C900, Инструкция по эксплуатации

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16. Using the Altitude Measurement Mode
The watch switches to the altitude measurement mode (altitude correction dis-
play) when button (M) is pressed for at least 2 seconds in any of the standard
modes (except during chronograph measurement). During altitude measure-
ment, altitude and elapsed time from the start of altitude measurement are dis-
played. In addition, pressing the appropriate buttons allows the watch to save
data, including altitude, barometric pressure and time for a maximum of 6
points, in memory in the form of altitude memos.
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<Altitude Correction>
In order to accurately measure altitude for mountain climbing and so forth, it is
necessary to set the displayed altitude to the correct altitude at a location that
serves as a reference for correct altitude (triangulation point, first order leveling
point or altitude shown on an accurate map). This procedure is referred to as
altitude correction. Since the altitude displayed on the watch changes by
about 10 meters when barometric pressure changes by 1 hPa (1 hectopascal =
1 millibar), it is necessary to correct altitude several times per day under condi-
tions such as when the weather changes rapidly while mountain climbing.
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Peak
1st altitude correction (triangulation
point or other reference point)
Starting point
2nd altitude correction
(reference point)
<Altitude Correction
Display>
<Continuous Altitude
Measurement Display>
<Fixed Duration Altitude
Measurement Display>
Arrow Altitude
Date and
day
or switches
automatically
after 5
minutes
Mark flashes
Altitude
Elapsed time
or switches
automatically
after 5
minutes
Elapsed
time
(M) (M)
(M)