Handleiding Casio 2471 (pagina 3 van 8) (Engels)

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USER’S GUIDE 2471

With a Reference Altitude

• If you set a reference altitude, the watch

uses that value when calculating altitude

based on air pressure.

• To determine the height of a tall building,

set the reference altitude to 0 on the

ground floor. Note, however, that you may

not be able to get a good reading if the

building is pressurized or air-conditioned.

• When mountain climbing, you can set the

reference value in accordance with a

marker along the way or altitude

information from a map. After you do this,

the altitude readings produced by the

watch will be more accurate than they

would without a reference altitude.

400

To take an altitude reading

Pressing E in the Timekeeping Mode or in any of the other sensor modes

enters the Altimeter Mode. The watch automatically starts altitude

measurement, and displays the results.

• See “About Altitude Measurements” for important information.

• Altitude is displayed in units of 5 meters (20 feet).

• The measurement range for altitude is –700 to 10,000 meters (–2,300 to

32,800 feet).

About one

second later

Altitude graph (current altitude flashing) (unit: 10m/40 ft.)

Altitude

Timekeeping Mode time

▲

• The measured altitude may be a negative value in cases where there is a

reference altitude value set or because of certain atmospheric conditions.

• The displayed altitude value changes to

xxxxx meters (or feet) if a

measured altitude falls outside the measurement range. The altitude value

will be displayed again as soon as the measured altitude is within the

allowable range.

• You can change the unit of measurement for the displayed altitude values

between meters (m) and feet (ft). See “To change the Altitude Units”.

About Altitude Measurements

There are two types of altitude measurements: those for displayed data

(Altimeter Mode measurements) and those for memory data (Memory

measurements).

Altimeter Mode measurement

You can perform Altimeter Mode measurements in the Altimeter Mode only,

and an altimeter measurement operation starts whenever you enter the

Altimeter Mode.

During the first three minutes after entering the Altimeter Mode, ALTI flashes

on the display and measurements are taken every five seconds. After that,

the interval between measurements depends on whether you are using the

Short Mode (1-minute intervals) or the Long Mode (2-minute intervals).

• Long Mode is the default setting. See “Memory measurement” for

information about the Short Mode and Long Mode.

• If you do not perform any operation while in the Altimeter Mode, the watch

automatically returns to the Timekeeping Mode after four or five hours in

the Short Mode, or after nine or 10 hours in the Long Mode.

Memory measurement

The memory measurement operation stores the following data in watch

memory. Note that each time you perform a memory measurement operation,

it creates a new set of records, replacing the set of records currently in

memory. Memory measurement continues to be performed (indicated by the

REC indicator flashing on the display) even if you change to another mode.

Measurement start time, date, and altitude: 1 record

Automatic altitude readings and time, at fixed interval: Up to 39 records

Measurement end time, date, and altitude: 1 record

The watch also calculates the following values using measured data and

maintains one record for each in memory.

Relative altitude (altitude difference between start point and current altitude or

measurement end altitude)

Measurement time

Maximum altitude (highest measured altitude in memory)

Total ascent (total of ascents (A + B))

Cumulative total ascent (total of all measured altitude values in memory)

Start point

Stop point

Maximum altitude

• Starting a new measurement automatically clears relative altitude,

measurement time, maximum altitude, and total ascent values currently in

memory.

• Starting a new measurement does not clear cumulative total ascent. This

value continues to increase until it reaches 99,995 meters (327,983 feet).

After that, it reverts to 0 and starts again.

• The interval between memory measurements depends on whether the

Short Mode or the Long Mode is selected.

Short Mode: 5-minute interval

Long Mode: 15-minute interval

• Relative altitude, cumulative total ascent, and maximum altitude data is

calculated at regular intervals, depending on the Long Mode/Short Mode

setting. In both modes, calculations are performed every five seconds for the

first three minutes. After that, calculations are performed every minute in the

Short Mode and every two minutes in the Long Mode.

To select the Short Mode or Long Mode

1. In the Altimeter Mode, hold down A until the

display clears. After four or five seconds,

either

OFF or the current reference altitude

value (if set) starts to flash, which indicates

the setting screen.

•

OFF indicates no reference altitude.

• Note that you will not be able to change the

Short/Long Mode setting if a memory

measurement operation is in progress.

2. Press D twice.

• This causes either 0:05 (Short Mode) or

0:15 (Long Mode) to appear, which

indicates the current mode setting.

3. Each press of E toggles between the Short

Mode and Long Mode.

4. Press A to exit the setting screen.

To perform memory measurement

Hold down E for about one second until REC

flashes, which indicates that memory

measurement has started.

• Memory measurement stops automatically

after there are 41 records accumulated in

memory. When you want to stop a memory

measurement operation manually, hold down

E for about one second until REC disappears.

• While a memory measurement operation is in progress, press A to toggle

between the Standard Altitude screen and the Relative Altitude screen.

Note

• REC flashes on the display while a memory measurement operation is in

progress.

• Starting the memory measurement operation deletes any altimeter data

(except for cumulative total ascent data) currently in memory (and its graph)

and replaces it with the new data. Note that you cannot delete memory

contents manually.

Relative altitude

▲

Press A.

Altitude

Timekeeping Mode time

Standard Altitude

Screen

Relative Altitude

Screen

Measurement time

REL indicator

• You can recall data in memory using the Data Recall Mode.

Setting a Reference Altitude

After you set a reference altitude, the watch adjusts its air-pressure-to-altitude

conversion calculation accordingly. The altitude measurements produced by

this watch are subject to error caused by changes in air pressure. Because of

this, we recommend that you update the reference altitude whenever one is

available during your climb.

To set a reference altitude

1. In the Altimeter Mode, hold down A until the

display clears. After four or five seconds,

either

OFF or the current reference altitude

value (if set) starts to flash, which indicates

the setting screen.

2. Press E (+) or B (–) to change the current

reference altitude value by 5 meters (or 20 feet).

• You can set the reference altitude within the

range of –10,000 to 10,000 meters (–32,800

to 32,800 feet).

Casio 2471 Handleiding

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