Casio 2872 Operation Manual Download Page 5

Operation Guide 2872

5

Minute, seconds 

indicators on/off

Start
Time

Auto-repeat

on/off

To configure countdown timer settings

1. While the countdown start time is on the

display in the Countdown Timer Mode, hold
down 

A

 until the minute setting of the

countdown start time starts to flash, which
indicates the setting screen.

If the countdown start time is not displayed,
use the procedure under “To use the
countdown timer” to display it.

2. Press 

C

 to move the flashing in the sequence

shown below to select other settings.

l l l l

l

l

l

ll

ll

ll

l

l

l

l

3. Perform the following operations, depending

on which setting is currently selected on the
display.

While the minute setting is flashing, use 

D

(+) or 

B

 (–) to change it.

While the auto-repeat on/off setting (

ON

 or

OFF

) is flashing on the display, press 

D

 to

toggle auto-repeat on (

ON

) and off (

OFF

).

While the seconds indicator is flashing,
press 

D

 to toggle display of the minute and

seconds indicators on (indicated when the
minute indicator is displayed) and off
(minute indicator not displayed).

4. Press 

A

 to exit the setting screen.

The auto-repeat indicator (

) appears on the

display while auto-repeat is turned on.

ll

ll

l ll

ll

ll

ll

ll

l

l

l

l l

l l l l l

l

l

l

l

Auto-repeat indicator

Minute indicator

Seconds
indicator

On

Off

To turn the progress beeper on and off

Pressing 

A

 while the countdown start time is on

the display or while a countdown timer operation
is in progress in the Countdown Timer Mode
toggles progress beeper operation on ( 
displayed) and off ( 

 not displayed).

To use the countdown timer

Press 

E

 while in the Countdown Timer Mode to

start the countdown timer.

When display of the minute and seconds
indicators is turned on, the indicators show the
remaining countdown time (minutes and
seconds). The seconds and minute indicators
are positioned at 12 o’clock when the current
countdown time is 60 minutes.

Progress beeper on indicator

Minute indicator

Seconds
indicator

When the countdown reaches zero, the alarm sounds for five seconds or
until you stop it by pressing any button.

Press 

E

 while a countdown operation is in progress to pause it. Press 

E

again to resume the countdown.

The countdown timer operation continues even if you exit the Countdown
Timer Mode.

To completely stop a countdown operation, first pause it (by pressing 

E

),

and then press 

A

. This returns the countdown time to its starting value.

Frequent use of auto-repeat and the alarm can run down battery power.

Alarms

You can set five independent daily alarms. When
an alarm is turned on, the alarm tone sounds
when the alarm time is reached.
You can also turn on an Hourly Time Signal,
which will cause the watch to beep twice every
hour on the hour.

The alarm number (

ALx1

 through

ALx5

 ) indicates an alarm screen. 

:00

 is

shown for the alarm time when the Hourly Time
Signal screen is on the display.

When you enter the Alarm Mode, the data you
were viewing when you last exited the mode
appears first.

All of the operations in this section are
performed in the Alarm Mode, which you enter
by pressing 

C

.

Alarm time
(Hour : Minutes)

Alarm number

Alarm on indicator

Hourly time signal on
indicator

Timekeeping
Mode time

To set an alarm time

1. In the Alarm Mode, use 

D

 to scroll through

the alarm screens until the one whose time
you want to set is displayed.

2. Hold down 

A

 until the hour setting of the alarm time start to flash, which

indicates the setting screen.

This automatically turns on the alarm.

3. Press 

C

 to move the flashing between the hour and minute settings.

4. While a setting is flashing, use 

D

 (+) and 

B

 (–) to change it.

When setting the alarm time using the 12-hour format, take care to set
the time correctly as a.m. (no indicator) or p.m. (P indicator).

5. Press 

A

 to exit the setting screen.

AL x1

:00

AL x2

AL x3

AL x4

AL x5

Alarm Operation

The alarm sounds in all modes at the preset time for about 10 seconds, or
until you stop it by pressing any button.

To test the alarm

In the Alarm Mode, hold down 

D

 to sound the alarm.

To turn an alarm and the Hourly Time Signal on and off

1. In the Alarm Mode, use 

D

 to select an alarm or the Hourly Time Signal.

2. When the alarm or the Hourly Time Signal you want to is selected, press

E

 to turn it on and off.

 Indicates alarm is ON.

 Indicates Hourly Time Signal is ON.

The alarm on indicator (

) and the Hourly Time Signal on indicator (

)

are shown on the display in all modes while these functions are turned on.

If any alarm is on, the alarm on indicator is shown on the display in all
modes.

Backlight

The backlight uses an EL (electro-luminescent)
panel that causes the entire display to glow for
easy reading in the dark. The watch’s auto light
switch automatically turns on the backlight when
you angle the watch towards your face.

The auto light switch must be turned on
(indicated by the auto light switch on indicator)
for it to operate.

You can specify 1.5 seconds or 2.5 seconds as
the illumination duration.

See “Backlight Precautions” for other important
information about using the backlight.

Auto light switch on
indicator

To turn on the backlight manually

Press 

L

 in any mode to illuminate the display.

The above operation turns on the backlight regardless of the current auto
light switch setting.

The backlight is disabled while you are performing a bearing sensor
calibration operation in the Digital Compass Mode.

About the Auto Light Switch

Turning on the auto light switch causes the backlight to turn on, whenever you
position your wrist as described below in any mode.
Note that this watch features a “Full Auto EL Light”, so the auto light switch
operates only when available light is below a certain level. It does not turn on
the backlight under bright light.

Moving the watch to a position that is parallel to the ground and then tilting
it towards you more than 40 degrees causes the backlight to turn on.

 Wear the watch on the outside of your wrist.

Warning!

Always make sure you are in a safe place whenever you are reading
the display of the watch using the auto light switch. Be especially
careful when running or engaged in any other activity that can result
in accident or injury. Also take care that sudden illumination by the
auto light switch does not surprise or distract others around you.

Parallel to
ground

More than
40

°

When you are wearing the watch, make sure that its auto light switch
is turned off before riding on a bicycle or operating a motorcycle or
any other motor vehicle. Sudden and unintended operation of the auto
light switch can create a distraction, which can result in a traffic
accident and serious personal injury.

Summary of Contents for 2872

Page 1: ...ference section Sensor Light General Guide The illustration below shows which buttons you need to press to navigate between modes In any mode press L to illuminate the display You can use buttons B D and E to directly enter a sensor mode from the Timekeeping Mode or from another sensor mode To enter a sensor mode from the Stopwatch Countdown Timer Data Recall or Alarm Mode first enter the Timekeep...

Page 2: ...t that readings are incorrect To take barometric pressure and temperature readings Pressing E in the the Timekeeping or in any of other sensor modes enters the Barometer Thermometer Mode and automatically starts taking barometric pressure and temperature measurements It can take up to four or five seconds for the barometric pressure reading to appear after you enter the Barometer Thermometer Mode ...

Page 3: ...r 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 be without a reference altitude 400 B A To take an altit...

Page 4: ...ment All of the operations in this section are performed in the Stopwatch Mode which you enter by pressing C Minutes Seconds 1 100 second Timekeeping Mode time Seconds indicator Hours Minute indicator To measure times with the stopwatch J J J J J J J J J J J First runner finishes Display time of first runner Second runner finishes J Elapsed Time E E E E A Start Stop Re start Stop Clear Split Time ...

Page 5: ...e 1 In the Alarm Mode use D to scroll through the alarm screens until the one whose time you want to set is displayed 2 Hold down A until the hour setting of the alarm time start to flash which indicates the setting screen This automatically turns on the alarm 3 Press C to move the flashing between the hour and minute settings 4 While a setting is flashing use D and B to change it When setting the...

Page 6: ... When air pressure changes because of changes in the weather Extreme temperature changes When the watch itself is subjected to strong impact 0 ft 2000 ft 4000 ft 6000 ft 8000 ft 10000 ft 12000 ft 14000 ft 25 84 inHg 22 23 inHg 19 03 inHg 44 7 F 30 5 F 16 2 F 59 0 F 29 92 inHg About 3 6 F per 1000 ft About 0 15 inHg per 200 ft About 0 17 inHg per 200 ft About 0 192 inHg per 200 ft About 0 21 inHg p...

Page 7: ...ekeeping remains enabled for up to about six months The following table shows the amount of time the watch needs to be exposed to light each day in order to generate enough power for normal daily operations Approximate Exposure Time 5 minutes 24 minutes 48 minutes 8 hours Exposure Level Brightness Outdoor Sunlight 50 000 lux Sunlight Through a Window 10 000 lux Daylight Through a Window on a Cloud...

Page 8: ...Canada while the magnetic south pole is in southern Australia Note that the difference between magnetic north and true north as measured with all magnetic compasses tends to be greater as one gets closer to either of the magnetic poles You should also remember that some maps indicate true north instead of magnetic north and so you should make allowances when using such maps with this watch Locatio...

Page 9: ... the sensor to correct the errors Important Incorrectly calibrating the temperature sensor can result in incorrect readings Carefully read the following before doing anything Compare the readings produced by the watch with those of another reliable and accurate thermometer If adjustment is required remove the watch from your wrist and wait for 20 or 30 minutes to give the temperature of the watch ...

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