Casio Backlight QW-1471 User Manual download pdf (Page 4)

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Applications

When no reference altitude is preset:

• The watch produces approximate altitude readings.

When a reference altitude is preset:

• Before beginning the climb, set the reference altitude to 0 m at the foot of

the mountain. This makes it possible to determine the difference in

altitude between the reference point and your destination.

• To determine the height of a tall

building, set the reference

altitude to 0 m on the ground

floor. Note, however, that if the

building is pressurized or air

conditioned, you may not be

able to get a good reading.

• To determine the difference in altitude between your house and the

another location, set the reference altitude to 0 m at your house, and then

check the reading when you arrive at the other location.

About altitude measurements

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

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

measurements”).

Altimeter mode measurement

This type of measurement is performed only when the watch is in the

Altimeter Mode. As soon as you enter the Altimeter Mode, measurements

are taken every five seconds for the first three minutes. After that,

measurements are taken every two minutes. The display unit for Altimeter

Mode measurements is 5 m, and the measurement range is 0 to 4000 m.

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

reference altitude value set or because of certain atmospheric conditions.

Understanding the altimeter display

Use C to enter the Altimeter Mode. Note that once you enter the Altimeter

Mode, if you do not press any button for 10 or 11 hours, the watch

automatically returns to the Timekeeping Mode.

1 “ALTI” flashes while a measurement is being taken every five seconds.

It does not flash during measurements taken every two minutes.

2 “AUTO” flashes on the display while a memory measurement is in

progress. The indicator stops flashing while no measurement is being

performed.

3“

” appears on the display when the altitude alarm is switched on.

Memory measurements

Memory measurements are taken independently of Altimeter Mode

measurements and stored directly into memory (along with temperature

measurements) for later recall. With memory measurement, the watch

continuously performs measurements whenever the minutes in the

Timekeeping Mode reach 00, 15, 30, or 45, until you switch memory

measurements off. The watch continues to take measurements regardless

of whether or not you change modes, so you can keep a running log of

altitude and temperature changes automatically.

About the memory...

The memory item stored by the watch consists of the current altitude, plus

the month, date, time, and temperature. Data is stored in the same

sequence that it is input.

Memory can hold a total of 50 sets of data, which is enough to store 12

hours and 15 minutes of memory data. See “To recall altitude measurement

data from memory” for details on how to recall memory data.

Important!

Further memory measurements become impossible

whenever memory is full. The message “FULL” on

the display indicates that memory is full. Always

check the amount of memory remaining before

starting memory measurements, and delete data if

necessary.

Remaining memory

Mode indicator

Altitude Graph

(unit: 10m)

Current altitude

(flashing)

Auto memory

indicator

Graphic display

AUTO

ALTI

A S

AUTO

ALTI

A S

Altitude alarm

Current altitude

Current time

Current temperature

ALTI

A S

To store altitude data into memory (memory measurement)

1. In the Altimeter Mode, hold down D until

the watch emits a short beep, indicating

the start of the measurement.

• The data measured when you first start

memory measurement is also stored into

memory.

• The “AUTO” indicator flashes on the

display when you start memory

measurements. The “AUTO” indicator

continues to flash (indicating that

measurements continue) even if you

change modes.

• Auto memory measurement cuts off automatically whenever there are 49

sets of data stored in memory. The 50th set of data measured when you

stop the measurement operation in step 2 below is also stored in memory.

2. To stop measurements at any point, hold down D again until the watch

emits a short beep.

• A final measurement is taken when you switch memory measurement off,

and that data is also stored into memory. Such data is indicated by “FIN”

during the recall operation.

Setting a Reference Altitude

After you set a reference altitude, the watch automatically calculates the

difference between the current altitude and your preset value. The altitude

measurements produced by this watch are subject to error caused by

changes in atmospheric pressure. Because of this, we recommend that you

set the reference altitude during your climb whenever one is available.

1. In the Altimeter Mode, hold down A until

the display clears. After 4 or 5 seconds,

either “OFF” or the current reference

altitude value (if set) will start to flash.

The data flashes because it is

selected

• The “OFF” indicator appears when the

factory setting is being used for the

calibration.

2. Press D to increase the current reference altitude value by 5 m or B to

decrease it. Holding down either button changes the value at high speed.

• You can set the reference altitude within the range of –4000 m to 4000 m.

• Pressing B and D at the same time returns to the “OFF” message.

3. After setting the reference altitude you want, press A to return to the

Altimeter Mode.

About the Altitude Alarm

The altitude alarm sounds for about five seconds whenever the current

altitude matches a preset value. You can press any button to stop the

alarm after it starts to sound.

Example

If you set the altitude alarm at 130 meters, it sounds when you pass the

130-meter mark on your way up and on your way back down.

To set the altitude alarm

1. In the Altimeter Mode, hold down A until the display clears. After 4 or 5

seconds, either “OFF” or the current reference altitude value (if set) will

start to flash. The data flashes because it is

selected

2. Press C to change the selection in the following sequence.

Reference Altitude Setting

Altitude Alarm Setting

3. Press C to select the altitude alarm

setting display (indicated by the “AL”

indicator).

4. Press D to increase the altitude alarm

value by 5 m or B to decrease it.

Holding down either button changes the

value at high speed.

• You can set the altitude alarm setting

within the range of –4000 m to 4000 m.

• Press B and D at the same time to

change the setting to “0”.

5. After setting the altitude alarm value, press A to return to the Altimeter

Mode.

To switch the altitude alarm on and off

1. In the Altimeter Mode, hold down A until the display clears. After 4 or 5

seconds, either “OFF” or the current reference altitude value (if set) will

start to flash. The data flashes because it is

selected

2. Press E to switch the altitude alarm on and off.

• The indicator “

” is shown on the display while the altitude alarm is on.

3. After switching the altitude alarm on or off, press A to return to the

Altimeter Mode.

• If the altitude alarm is on, the altitude alarm indicator remains on the

display when you change to another mode.

AUTO

ALTI

A S

Auto memory indicator

AUTO

ALTI

A S

AUTO

ALTI

A S

Altitude alarm indicator

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Casio Backlight QW-1471 User Manual Page 4

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