Casio 5446 Operation Manual Download Page 4

E-24

To calibrate the temperature sensor

1. Take a reading with another measurement device to determine the 

exact current temperature.

2. With the watch in the Timekeeping Mode, press 

D

 to enter the 

Thermometer Mode.

3. Hold down 

A

 for about two seconds until the temperature reading 

disappears from the upper display. Release 

A

 at this time, which will 

cause the temperature reading to fl ash, which indicates the setting 
mode.

4. Use 

D

 (+) and 

B

 (−) to calibrate the temperature value with the reading of another instrument.

 Each press of a button changes the temperature value in units of 0.1°C (0.2°F).

 To return the temperature to its uncalibrated value (

OFF

 setting), press 

D

 and 

B

 at the same 

time.

5. Press 

A

 to complete calibration and restart the temperature reading operation.

Thermometer Precautions

Temperature measurements are affected by your body temperature (while you are wearing the watch), 
direct sunlight, and moisture. To achieve a more accurate temperature measurement, remove the watch 
from your wrist, place it in a well ventilated location out of direct sunlight, and wipe all moisture from the 
case. It takes approximately 20 to 30 minutes for the case of the watch to reach the actual surrounding 
temperature.

E-25

Specifying Temperature Unit

Use the procedure below to specify the temperature unit to be used in the Thermometer Mode.

Important!

When

TOKYO

 is selected as the Home City, the temperature unit is set automatically to Celsius (

°C

). This 

setting cannot be changed.

To specify the temperature unit

1. In the Timekeeping Mode, press 

D

 to enter the Thermometer Mode.

2. Hold down 

A

 for about two seconds until the temperature reading 

disappears from the upper display.

3. Press 

C

 to display the current temperature unit in the lower display.

4. Press 

D

 to toggle the temperature unit between 

°C

 (Celsius) and 

°F

(Fahrenheit).

5. After the setting is the way you want, press 

A

 to exit the setting 

screen.

E-26

Checking the Current Time in a Different Time Zone

You can use the World Time Mode to view the current time in one of 31 time zones (48 cities) around the 
globe. The city that is currently selected in the World Time Mode is called the “World Time City”.

 You also can swap the current World Time City and Home Time City in the World Time Mode (page 

E-28).

To enter the World Time Mode

Use

C

 to select the World Time Mode as shown on page E-8.

 The mode dial hand will point to 

WT

.

 The city code of the currently selected World Time City will appear in 

the upper display.

 Pressing 

A

 displays the current time (hour, minute second) of the 

World Time City in the upper display.

Enter the Timekeeping Mode to check whether the indicated World Time is AM or PM (page E-13).

Currently selected 
World Time City

World Time 
hour hand

World Time 
minute hand

Currently selected 
World Time City

World Time 
hour hand

World Time 
minute hand

E-27

To confi gure World Time City and summer time settings

1. In the World Time Mode, use 

D

 (East) to scroll through city codes.

 For details about city codes, see the “City Code Table” at the back of this manual.

 Holding down 

D

 will scroll at high speed. 

 Pressing down 

B

 and 

D

 at the same time will jump to the UTC city code.

2. To toggle between summer time (

DST

 in the upper display) and standard time (

DST

 not displayed), 

hold down 

A

.

DST indicator

Hold down

A

 Using the World Time Mode to change the DST setting of the city code that is selected as your 

Home City also will change the Timekeeping Mode time DST setting.

 Note that you cannot switch between standard time/daylight saving time (DST) while 

UTC

 is 

selected as the World Time City.

 Note that the standard time/daylight saving time (DST) setting affects only the currently selected 

city code. Other city codes are not affected.

E-28

Swapping the Home City and World Time City

You can use the procedure below to swap your Home Time City with your World Time City.
This function comes in handy for those who often travel between two different time zones.

 You need to confi gure starting Home City and World Time City settings before performing the 

procedure below.

   To confi gure Home City settings (page E-15)
   To confi gure World Time City and summer time settings (page E-27)

To swap your Home Time and World Time Cities

Press

A

 and 

B

 at the same time.

 The Home City time (indicated by the main hour and minute hands) and the World Time City time 

(indicated by the dial hands) will be swapped with each other. 

$

 and 

%

Current Time in 
World City (TYO)

Home City [NYC] Time

Current time in 
World City (NYC)

Home City [TYO] Time

E-29

Using the Stopwatch

The stopwatch measures elapsed time, split times, and two fi nishes.

To enter the Stopwatch Mode

Use

C

 to select the Stopwatch Mode as shown on page E-8.

The mode dial hand will move to 

STW

.

To perform an elapsed time operation

D

D

D

D

A

Start

Stop

(Resume)

(Stop)

Reset

To pause at a split time

D

A

A

D

A

Start

Split

(

SPL

 appears in 

the upper display.)

Split release

Stop

Reset

Seconds

Minutes

1/100 second

Seconds

Minutes

1/100 second

E-30

To measure two fi nishes

D

A

D

A

A

Start

Split

First runner fi nishes.
(

SPL

 appears in the 

upper display.)
Display time of fi rst 
runner

Stop

Second runner 
fi nishes.

Split release

Display time of 
second runner

Reset

Note

 The Stopwatch Mode can indicate elapsed time up to 59 minutes, 59.99 seconds.

 Once started, stopwatch timing continues until you press 

D

 to stop it, even if you exit the Stopwatch 

Mode to another mode and even if timing reaches the stopwatch limit defi ned above.

 Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time.

E-31

Using the Countdown Timer

The countdown timer can be confi gured to start at a preset time and sound an alarm when the end of the 
countdown is reached.

To enter the Countdown Timer Mode

Use

C

 to select the Countdown Timer Mode as shown on page E-8.

 The mode dial hand will move to 

TMR

 and the upper display will show the current countdown time.

To specify the countdown start time

1. Enter the Countdown Timer Mode.

 If a countdown is in progress (indicated by the seconds counting 

down), press 

D

 to stop it and then press 

A

 to reset to the current 

countdown start time.

 If a countdown is paused, press 

A

 to reset to the current 

countdown start time.

2. Hold down 

A

 until the minute setting of the current countdown start 

time starts to fl ash. This is the setting screen.

3. Use 

D

 (+) and 

B

 (–) to change the minute.

 To set the starting value of the countdown time to 60 minutes, set 

60'00

.

4. Press 

A

 to exit the setting screen.

Countdown time 
(Minutes, seconds)

Countdown time 
(Minutes, seconds)

Operation Guide 5446

Summary of Contents for 5446

Page 1: ...Date Settings E 17 To change the current time and date settings E 17 Hand Home Position Adjustment E 20 To adjust home positions E 20 Taking Temperature Readings E 22 To take temperature readings E 22...

Page 2: ...itions normal timekeeping E 12 Note Watch button functions are the same regardless of whether the hands are moved out of the way or at their normal positions Changing to another mode will cause the ha...

Page 3: ...s not necessary when the analog time and digital time are the same time in the Timekeeping Mode To adjust home positions 1 In the Timekeeping Mode hold down A and keep it depressed for about ve second...

Page 4: ...toggle between summer time DST in the upper display and standard time DST not displayed hold down A DST indicator Hold down A Using the World Time Mode to change the DST setting of the city code that...

Page 5: ...ing mode 2 Use C to cycle through the settings on the upper display until the current illumination duration LT1 or LT3 is shown See the sequence in step 2 of the procedure under To change the current...

Page 6: ...s The low battery indicator is ashing on the digital display The watch s battery power is low Have the batteries replaced as soon as possible See Low Battery Indication page E 41 Low battery indicator...

Page 7: ...BER BERLIN STO STOCKHOLM ATH ATHENS 2 CAI CAIRO JRS JERUSALEM MOW MOSCOW 3 JED JEDDAH THR TEHRAN 3 5 DXB DUBAI 4 KBL KABUL 4 5 KHI KARACHI 5 L 3 City Code City name UTC Offset GMT Differential DEL DE...

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