Operation Guide 3263

To use the countdown timer

Press Dwhile in the Countdown Timer Mode to start the countdown timer.

••When the end of the countdown is reached, the alarm sounds for ten seconds or until you stop it by pressing any button. The countdown time is reset to its starting value automatically when the alarm sounds.

••Press Dwhile a countdown operation is in progress to pause it. Press Dagain to resume the countdown.

••To stop a countdown operation completely, first pause it (by pressing D), and then press A. This returns the countdown time to its starting value.

Stopwatch

Warning!

••Always make sure you are in a safe place whenever you are reading 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 startle or distract others around you.

••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.

To turn the auto light switch on and off

In the Timekeeping Mode, hold down Bfor about three seconds to toggle the auto light switch on (auto light switch on indicator displayed) or off (auto light switch on indicator not displayed).

••The auto light switch on indicator is on the display in all modes while the auto light switch is turned on.

1/100 second

Seconds

The stopwatch lets you measure elapsed time, split times, and two finishes.

••A display range of the stopwatch is 23 hours, 59 minutes, 59.99 seconds.

••A stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.

••A stopwatch measurement operation continues even if you exit the Stopwatch Mode.

••Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time and returns to elapsed time measurement.

••All of the operations in this section are performed in the

••In order to protect against running down the battery, the auto light switch turns off automatically approximately six hours after you turn it on.

Reference

This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.

Graphic Areas

There are two graphic areas named A and B.

Minutes Hours

Stopwatch Mode, which you enter by pressing C.

Graphic area A

••Graphic area A: In the Timekeeping Mode and World Time Mode, segments indicate the current time (in units of 10 seconds). In the Countdown Timer Mode and

To measure times with the stopwatch

Elapsed Time

 

 

 

 

 

 

 

 

D

 

D

 

 

D

 

D

 

A

Start

Stop

Re-start

Stop

Clear

Split Time

 

 

 

 

 

 

 

 

D

 

A

 

 

A

 

D

 

A

Start

Split

Split release

Stop

Clear

 

 

(SPL displayed)

 

 

 

 

 

Two Finishes

 

 

 

 

 

 

 

 

Graphic area B

Stopwatch Mode, segments indicate the ongoing timer measurement (in units of 1/10 second).

••Graphic area B: In the Timekeeping Mode and World Time Mode, segments indicate the current time (in units of one second). In the Countdown Timer Mode and Stopwatch Mode, segments indicate the ongoing timer measurement (in units of one second).

D

 

A

 

 

D

 

 

A

 

 

A

Start

Split

Stop

Split release

Clear

 

 

First runner

Second runner

Display time of

 

 

 

finishes. Display

finishes.

second runner.

 

 

 

time of first

 

 

 

 

 

 

 

 

 

runner.

 

 

 

 

 

 

 

Illumination

This watch has two LEDs (light-emitting diode) that cause the entire display to glow for easy reading in the dark. The watch’s auto light switch turns on illumination automatically when you angle the watch for reading towards your face.

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

••See “Illumination Precautions” for more important information.

Auto light switch on indicator

To turn on illumination

In any mode (except when a setting screen is on the display), press Bto turn on illumination.

••You can use the procedure above to select either 1.5 seconds or 3 seconds as the illumination duration. When you press B, the illumination will remain on for about 1.5 seconds or 3 seconds, depending on the current illumination duration setting.

To specify the illumination duration

1.In the Timekeeping Mode, hold down Auntil the seconds start to flash, which indicates the setting

screen.

2. While the seconds are flashing, press Cnine times to display the illumination duration setting screen.

3. Press Dto toggle between 1.5 seconds () and 3 seconds ().

4. Press Ato exit the setting screen.

About the Auto Light Switch

While the auto light switch is enabled, illumination turns on whenever you position your wrist as described below in any mode.

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

•• Wear the watch on the outside of your wrist.

Parallel to ground

More than 40°

Button Operation Tone

Mute indicator

The button operation tone sounds any time you press one

of the watch’s buttons. You can turn the button operation

 

 

tone on or off as desired.

 

••Even if you turn off the button operation tone, the alarms,

 

the Hourly Time Signal, and the countdown alarm all

 

operate normally.

To turn the button operation tone on and off

In any mode (except when a setting screen is on the display), hold down Cto toggle the button operation tone on (the mute indicator not displayed) and off (the mute indicator displayed).

••Holding down Cto turn the button operation tone on or off also causes the watch’s current mode to change.

••The mute indicator is displayed in all modes when the button operation tone is turned off.

Auto Return Features

••If you leave the watch in the Alarm Mode for two or three minutes without performing any operation, it automatically changes to the Timekeeping Mode.

••If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch automatically exits the setting screen.

Scrolling

The Band Dbuttons are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls at high speed.

Initial Screens

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

Timekeeping

••Resetting the seconds towhile the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset towithout changing the minutes.

••The year can be set in the range of 2000 to 2099.

••The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced.

World Time

••The seconds count of the World Time is synchronized with the seconds count of the Timekeeping Mode.

••All World Time Mode times are calculated from the current Home City Time in the Timekeeping Mode using UTC time offset values.

••The UTC offset is a value that indicates the time difference between a reference point in Greenwich, England and the time zone where a city is located.

••The letters “UTC” is the abbreviation for “Coordinated Universal Time”, which is the world-wide scientific standard of timekeeping. It is based upon carefully maintained atomic (cesium) clocks that keep time accurately to within microseconds. Leap seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s

rotation.

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