Manual Casio Radio Controlled WVA-M650D-2AER Watch

Manual

Operation Guide 5110

E-10

Radio-controlled Atomic Timekeeping

This watch receives a time calibration signal and updates its time setting accordingly.

• This watch is designed to pick up the time calibration signals transmitted in

Germany (Mainfl ingen), England (Anthorn), the United States (Fort Collins), China

(Shangqiu), and Japan (Fukushima, Fukuoka/Saga).

• See the information under “Signal Reception Troubleshooting” (page E-27) if you

experience problems with time calibration signal reception.

Current Time Setting

This watch adjusts its time setting automatically in accordance with a time calibration

signal. You also can perform a manual procedure to set the time and date, when

necessary.

•

The fi rst thing you should do after purchasing this watch is to specify your

Home City (the city where you normally will use the watch). For more

information, see “To specify your Home City” on page E-12.

E-11

• When using the watch outside the areas covered by the time signal transmitters,

you will have to adjust the current time setting manually as required. See “To set the

time and date manually” (page E-58) for more information about manual time

settings.

• The U.S. time calibration signal can be picked up by the watch while in North

America. The term “North America” in this manual refers to the area that consists of

Canada, the continental United States, and Mexico.

• Using this watch in a country covered by a time calibration signal that is different

from the countries it supports may result in incorrect time indication due to local

application of summer time, etc.

E-12

To specify your Home City

1. In the Timekeeping Mode, hold down

A

for about fi ve

seconds, until the watch beeps twice and the city code

fl ashes on the upper display. This is the setting mode.

2. Press

D

(east) and

B

(west) to select the city code

you want to use as your Home City.

LIS, LON

: Lisbon, London

MAD, PAR, ROM, BER, STO

: Madrid, Paris, Rome,

Berlin, Stockholm

ATH

: Athens

MOW

: Moscow

HKG, BJS, TPE

: Hong Kong, Beijing, Taipei

SEL, TYO

: Seoul, Tokyo

HNL

: Honolulu

ANC

: Anchorage

YVR, LAX

: Vancouver, Los Angeles

YEA, DEN

: Edmonton, Denver

MEX, CHI

: Mexico City, Chicago

Left dial hand

PM indicator Seconds

Hour : Minutes

City code

E-13

MIA, YTO, NYC

: Miami, Toronto, New York

YHZ

: Halifax

YYT

: St.Johns

3. Press

A

to exit the setting mode.

• Normally, your watch should show the correct time as soon as you select your

Home City code. If it does not, it should adjust automatically after the next auto

receive operation (in the middle of the night). You also can perform manual

receive (page E-24) or you can set the time manually (page E-58).

• The watch will receive the time calibration signal automatically from the

applicable transmitter (in the middle of the night) and update its settings

accordingly. For information about the relationship between city codes and

transmitters, see page E-17 and “Transmitters” (page E-70).

• See the maps under “Approximate Reception Ranges” (page E-18) for

information about the reception ranges of the watch.

E-14

Time Calibration Signal Reception

There are two different methods you can use to receive the time calibration signal:

auto receive and manual receive.

•

Auto Receive

With auto receive, the watch receives the time calibration signal automatically up to

six times a day (fi ve times for the Chinese calibration signal). When any auto receive

is successful, remaining auto receive operations are not performed. For more

information, see “About Auto Receive” (page E-21).

•

Manual Receive

Manual receive lets you start a time calibration receive operation with the press of a

button. For more information, see “To perform manual receive” (page E-24).

E-15

Important!

• When getting ready to receive the time calibration signal, position the watch as

shown in the nearby illustration, with its 12 o’clock side pointing towards a window.

This watch is designed to receive a time calibration signal late at night. Because of

this, you should place the watch near a window as shown in the illustration when

you take it off at night. Make sure there are no metal objects nearby.

12 o’clock

or

• Make sure the watch is facing the right way.

E-16

• Proper signal reception can be diffi cult or even impossible under the conditions

listed below.

Inside or

among

buildings

Inside a

vehicle

Near household

appliances,

offi ce

equipment, or a

mobile phone

Near a

construction

site, airport, or

other sources

of electrical

noise

Near high-

tension power

lines

Among or

behind

mountains

• Signal reception normally is better at night than during the day.

• Time calibration signal reception takes from two to seven minutes, but in some

cases it can take as long as 14 minutes. Take care that you do not perform any

button operations or move the watch during this time.

E-17

• The time calibration signal the watch will attempt to pick up depends on its current

Home City code setting as shown below.

Home City Code Transmitter Frequency

LON, PAR, BER, ATH,

LIS, MAD, ROM, STO, MOW*

Anthorn (England) 60.0 kHz

Mainfl ingen (Germany) 77.5 kHz

HKG, BJS

Shangqiu City (China) 68.5 kHz

TPE, SEL, TYO

Fukushima (Japan) 40.0 kHz

Fukuoka/Saga (Japan) 60.0 kHz

HNL*, ANC*, LAX, DEN,

CHI, NYC, YVR, YEA, MEX,

MIA, YTO, YHZ, YYT

Fort Collins, Colorado

(the United States)

60.0 kHz

* The areas covered by the

HNL

,

ANC

, and

MOW

city codes are quite far from the

time calibration signal transmitters, and so certain conditions may cause

problems with signal reception.

• Calibration signal reception is disabled while a countdown timer operation is in

progress.

E-18

Approximate Reception Ranges

U.S. Signal

600 miles

(1,000 kilometers)

Fort Collins

2,000 miles

(3,000 kilometers)

1,500 kilometers

UK and German Signals

Mainflingen

Anthorn

500 kilometers

The Anthorn signal is

receivable within this

area.

E-19

500 kilometers

500 kilometers

Fukushima

1,000 kilometers

Fukuoka/Saga

1,000 kilometers

Japanese Signals

Signals are receivable in the Taiwan area when reception conditions are good.

Changchun

Beijing

Shanghai

Hong Kong

1,500 kilometers

500 kilometers

Chengdu

Shangqiu

Chinese Signal

Rating

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