Operation Guide 3179

Radio-controlled Atomic Timekeeping Precautions•Strong electrostatic charge can result in the wrong time being set.

•The time calibration signal bounces off the ionosphere. Because of this, such factors as changes in the reflectivity of the ionosphere, as well as movement of the ionosphere to higher altitudes due to seasonal atmospheric changes or the time of day may change the reception range of the signal and make reception temporarily impossible.

•Even if the time calibration signal is received properly, certain conditions can cause the time setting to be off by up to one second.

•The current time setting in accordance with the time calibration signal takes priority over any time settings you make manually.

•The watch is designed to update the date and day of the week automatically for the period January 1, 2000 to December 31, 2099. Setting of the date by the time calibration signal cannot be performed starting from January 1, 2100.

•This watch can receive signals that differentiate between leap years and non-leap years.

•Though this watch is designed to receive both time data (hour, minutes, seconds) and date data (year, month, day), certain signal conditions can limit reception to time data only.

•If you are in an area where proper time calibration signal reception is impossible, the watch keeps the time with the precision noted in “Specifications”.

•If you have problems with proper time calibration signal reception or if the time setting is wrong after signal reception, check your current city code, DST (summer time), and auto receive settings.

•The Home City setting reverts to the initial default of TYO (Tokyo) whenever the battery power level drops to Level 5 or when you have the rechargeable battery replaced. If this happens, change the Home City to the setting you want.

Transmitters

The time calibration signal received by this watch depends on the currently selected Home City code.

• When a U.S. time zone is selected, the watch receives the time calibration signal

transmitted from the United States (Fort Collins).

• When a Japanese time zone is selected, the watch receives the time calibration

signal transmitted from Japan (Fukushima and Fukuoka/Saga).

• When a European time zone is selected, the watch receives the time calibration

signals transmitted from Germany (Mainflingen) and England (Anthorn).

• When a China time zone is selected, the watch receives the time calibration signals

transmitted from China (Shangqiu City).
• When your Home City is LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW

(which can receive both the Anthorn and Mainflingen signals), the watch first tries to

pick up the signal it last successfully received. If that fails, it tries the other signal. For

the first receive after you select your Home City, the watch tries the nearest signal

first (Anthorn for LIS, LON, Mainflingen for MAD, PAR, ROM, BER, STO, ATH, and
MOW).

Specifications

Accuracy at normal temperature: ± 15 seconds a month

Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week Time format: 12-hour and 24-hour

Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099

Other: Home City code (can be assigned one of 48 city codes); Standard Time / Daylight Saving Time (summer time)

Time Calibration Signal Reception: Auto receive 6 times a day (5 times a day for the Chinese calibration signal) (Remaining auto receives cancelled as soon as one is successful); Manual receive

Receivable Time Calibration Signals: Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5 kHz); Anthorn, England (Call Sign: MSF, Frequency: 60.0 kHz); Fort Collins, Colorado, the United States (Call Sign: WWVB, Frequency:

60.0kHz); Fukushima, Japan (Call Sign: JJY, Frequency: 40.0 kHz); Fukuoka/ Saga, Japan (Call Sign: JJY, Frequency: 60.0 kHz); Shangqiu City, Henan Province, China (Call Sign: BPC, Frequency: 68.5 kHz)

World Time: 48 cities (31 time zones)Other: Daylight Saving Time/Standard Time

Alarms: 5 daily alarms (four one-time alarms; one snooze alarm); Hourly Time Signal

Stopwatch:Measuring unit: 1/100 secondMeasuring capacity: 23:59' 59.99''Measuring modes: Elapsed time, split time, two finishesCountdown Timer: Measuring unit: 1 second

Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments) Illumination: EL (electro-luminescent panel); Full Auto Light Switch; Selectable

illumination durationOther: Button operation tone on/offPower Supply: Solar cell and one rechargeable battery

Approximate battery operating time: 9 months (from full charge to Level 4) under the following conditions:

•Watch not exposed to light•Internal timekeeping•Display on 18 hours per day, sleep state 6 hours per day•1 illumination operation(1.5 second) per day•10 seconds of alarm operation per day•Approximately 4 minutes of signal reception per day

Frequent use of illumination runs down the battery. Particular care is required when using the auto light switch.

City Code Table

Auto Return

•If you do not perform any operation for about two or three minutes while a setting screen (with a flashing setting) is on the display, the watch will exit the setting screen automatically.

Scrolling

The B and D 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 Mode or Alarm Mode, the data you were viewing when you last exited the mode appears first.

Timekeeping

•Resetting the seconds to 00 while 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 to 00 without 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.

•The current time for all city codes in the Timekeeping Mode and World Time Mode is calculated in accordance with the Coordinated Universal Time (UTC) for each city, based on your Home City time setting.

World Time

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

Illumination Precautions

• The electro-luminescent panel that provides illumination loses power after very long

use.
City

City

UTC Offset/

Code

GMT Differential

 

PPG

Pago Pago

–11
HNL

Honolulu

–10

ANC

Anchorage

–9

YVR

Vancouver

–8

LAX

Los Angeles

 

YEA

Edmonton

–7

DEN

Denver

 

MEX

Mexico City

–6

CHI

Chicago

 

NYC

New York

–5

SCL

Santiago

–4

YHZ

Halifax

 

YYT

St. Johns

–3.5

RIO

Rio De Janeiro

–3

FEN

Fernando de Noronha

–2

RAI

Praia

–1

UTC

 

 

LIS

Lisbon

0

LON

London

 

MADMadrid

 

PAR

Paris

 

ROM

Rome

+1

BER

Berlin

 

STO

Stockholm

 

ATH

Athens

 

CAI

Cairo

+2

JRS

Jerusalem

 

City

City

UTC Offset/

Code

GMT Differential

 

MOW

Moscow

+3

JED

Jeddah

 

THR

Tehran

+3.5

DXB

Dubai

+4

KBL

Kabul

+4.5

KHI

Karachi

+5

DEL

Delhi

+5.5

KTM

Kathmandu

+5.75

DAC

Dhaka

+6

RGN

Yangon

+6.5

BKK

Bangkok

+7

SIN

Singapore

 

HKG

Hong Kong

+8

BJS

Beijing

 

TPE

Taipei

 

SEL

Seoul

+9

TYO

Tokyo

 

ADL

Adelaide

+9.5
GUMGuam+10

SYD

Sydney

 

NOU

Noumea

+11

WLG

Wellington

+12
• Illumination may be difficult to see when viewed under direct sunlight.

• The watch may emit an audible sound whenever the display is illuminated. This is

due to vibration of the EL panel used for illumination, and does not indicate
malfunction.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.
Auto light switch precautions

•Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light switch to operate when it is not needed, which shortens battery life. If you want to wear the watch on the inside of your wrist, turn off the auto light switch feature.

More than 15 degrees• Illumination may not turn on if the face of the watch is
too highmore than 15 degrees above or below parallel. Make

 

sure that the back of your hand is parallel to the ground.

 

• Illumination turns off after a preset amount of time (1.5

 

or 3 seconds), even if you keep the watch pointed

 

towards your face.

•Static electricity or magnetic force can interfere with proper operation of the auto light switch. If illumination does not turn on, try moving the watch back to the starting position (parallel with the ground) and then tilt it back toward you again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again.

•Under certain conditions, illumination may not turn on until about one second after you turn the face of the watch towards you. This does not necessarily indicate malfunction of the auto light switch.

•You may notice a very faint clicking sound coming from the watch when it is shaken back and forth. This sound is caused by mechanical operation of the auto light switch, and does not indicate a problem with the watch.

•Based on data as of June 2008.

•The rules governing global times (UTC offset and GMT differential) and summer time are determined by each individual country.

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