Casio 5398 Operation Manual Download Page 2

Operation Guide 5398

E-19

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

A

 to return to the Timekeeping 

Mode.

Note

 

 After you specify a city code, the watch will use UTC* offsets in the World Time 
Mode to calculate the current time for other time zones based on the current time 
in your Home City.

 

*

 Coordinated Universal Time, the world-wide scientifi c standard of timekeeping.
The reference point for UTC is Greenwich, England.

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 Confi guring Home City Settings

There are two Home City settings: actually selecting the Home City, and selecting 
either standard time or daylight saving time (DST).

 To confi gure Home City settings

1.  In the Timekeeping Mode, hold down 

A

 until the 

fl ashing 

Hold

 indicator disappears from the display 

and the currently selected city code appears on the 
right side of the upper display.

 

 This indicates the city code setting mode.

2.  Rotate the rotary switch to scroll through city codes on 

the digital display until the one you want to use as your 
Home City is displayed.

 

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

City Code

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 Timekeeping

Use the Timekeeping Mode to set and view the current time and date.

Hour

Month-Day

Minute

Day of week

Second

Hour : Minute

 PM indicator

Countdown Timer hand

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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 hands to move back to their normal 
positions.

 

 The hands also will move back to their normal positions automatically if no 
operation is performed for about one hour.

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1.  While holding down 

B

, press 

C

.

 

 This will cause the hour and minute hands to move to a location where they do 
not block your view of the digital display.

Example: When the current time is 8:23

 Flashes while the hands are moved out of the way.

2.  Holding down 

B

 again as you press 

C

 will cause the hands to return to their 

normal positions (normal timekeeping).

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 Quickly rotating the rotary switch three times in either direction will start high-speed 
movement (hand movement or displayed setting scrolling) in the corresponding 
direction (forward or back). To stop a high-speed operation, rotate the rotary 
switch in the direction opposite that of the current high-speed movement, or press 
any button.

 Moving the Hands Out of the Way for Better Viewing

You can use the procedure below to temporarily move the hour and minute hands 
out of the way to better view what is on the display.

 

 This operation can be performed in any mode. In the case of a setting mode 
(setting fl ashing on the screen), the hands will move out of the way automatically, 
even if you do not perform the below operation.

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Rotary switch Operations

Important!

 

 With this watch, you do not need to pull out the rotary switch before 
rotating it. Pulling on the rotary switch can damage the watch and 
cause malfunction.

 

 To protect against unintended operation, nothing happens for the fi rst rotary 
switch rotation. Continue rotating the rotary switch until the desired operation 
is performed. If you do not perform any rotary switch operation for about three 
minutes, you will need to rotate the rotary switch as described above before it 
operates again.

 

 Note that the result of a rotary switch operation depends on the mode the watch is 
in when you perform it.

 

You can use rotary switch rotation to perform the operations described below.

 

Timekeeping:  Enter the Countdown Timer Mode 

(when the countdown timer is stopped and reset to all zeros)

 

World Time:  Change the World Time City

 

Alarm:  Scroll through the available alarm screens

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General Functions (All Modes)

The functions and operations described in this section can be used in all modes.

 

 Auto Return Features

The watch will automatically return to the Timekeeping Mode if you do not perform 
any operation for a certain amount of time, as described below.

Mode

Approximate Elapsed Time

Alarm

3 minutes

Time or other setting mode 
(information fl ashing on the display)

Countdown Timer Mode 
(entered from the Timekeeping Mode by 
rotating the rotary switch)

10 seconds

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C

 Alarm Mode

 Countdown Timer 

Mode

 World Time Mode

C

C

 

 If the timer in the Countdown Timer Mode is stopped and reset to the countdown 
start time, you can also go directly from the Timekeeping mode to the Countdown 
Timer Mode by rotating the rotary switch or pressing 

T

. For more information, 

see “Directly Entering the Countdown Timer Mode from the Timekeeping Mode” 
(page E-40).

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 Selecting a Mode

 

 Press 

C

 to cycle between the modes as shown below.

 

 To return to the Timekeeping Mode from any other mode, hold down 

C

 for about 

two seconds.

 

 In any mode (except a setting mode), press 

B

 to illuminate the display.

 Timekeeping Mode

 Stopwatch Mode

C

C

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