Manual Casio Radio Controlled LCW-M170TD-2AER Watch

Manual

Operation Guide 5161

E-10

Day of week

Press C.

Day

▲

Receiving indicator

Appears when reception

is successful.

▲

C

C

Hour : MinutesPM indicator

Date Screen

Receiving

Indicator and

Seconds Count

Current Time

Screen

▲

Seconds

Switching the Display Screen

In the Timekeeping Mode, each press of C changes the contents of the digital

display.

E-11

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

(Mainflingen), England (Anthorn), the United States (Fort Collins), China (Shangqiu),

and Japan (Fukushima, Fukuoka/Saga).

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 first 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” (page E-12).

• 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 “Timekeeping”

(page E-53) for more information about manual time settings.

E-12

• 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.

• As of March 2010, China does not use Daylight Saving Time (DST). If China does go

to the Daylight Saving Time system in the future, some functions of this watch may

no longer operate correctly.

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

countries it supports may result in incorrect time indication due to local application of

summer time, etc.

To specify your Home City

1. In the Timekeeping Mode, hold down A for about three

seconds. You can release the button after “ADJ”

appears on the display.

• At this time, “12H” (12-hour timekeeping) or “24H” (24-

hour timekeeping) also will be flashing on the display.

E-13

2. Press B.

• The city code of the current Home City will flash,

which indicates the setting screen.

3. Press C (east) to select the city code you want to use

as your Home City.

LON : London

PAR :Paris

ATH : Athens

HKG: Hong Kong

TYO : Tokyo

HNL : Honolulu

ANC : Anchorage

LAX : Los Angeles

DEN :Denver

CHI : Chicago

NYC :New York

City code

E-14

4. Press A to exit the setting screen.

• 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-25) or you can set the time manually (page E-54).

• 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-18 and “Transmitters” (page E-72).

• See the maps under “Approximate Reception Ranges” (page E-19) for information

about the reception ranges of the watch.

• You can disable time signal reception, if you want. See “To turn auto receive on and

off” on page E-27 for more information.

• Under factory default settings, auto receive is turned off for all of the following city

codes: HNL (Honolulu) and ANC (Anchorage). For details about turning on auto

receive for these city codes, see “To turn auto receive on and off” on page E-27.

E-15

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

6 times a day (5 times a day for the Chinese calibration signal). When any auto

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

more information, see “About Auto Receive” (page E-22).

• 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-25).

E-16

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-17

• Proper signal reception can be difficult or even impossible under the conditions listed

below.

Inside or

among

buildings

Inside a

vehicle

Near a

construction

site, airport,

or other

sources of

electrical

noise

Near high-

tension power

lines

Near

household

appliances,

office

equipment,

or a mobile

phone

Among or

behind

mountains

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

• Time calibration signal reception takes from three to eight minutes, but in some

cases it can take as long as 16 minutes. Take care that you do not perform any

button operations or move the watch during this time.

E-18

• 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

LON, PAR, ATH

HKG

TYO

HNL*, ANC*, LAX,

DEN, CHI, NYC

Frequency

60.0 kHz

77.5 kHz

68.5 kHz

40.0 kHz

60.0 kHz

60.0 kHz

Transmitter

Anthorn (England)

Mainflingen (Germany)

Shangqiu City (China)

Fukushima (Japan)

Fukuoka/Saga (Japan)

Fort Collins, Colorado

(the United States)

* The areas covered by the HNL and ANC 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-19

Approximate Reception Ranges

U.K. and German Signals

Anthorn

Mainflingen

1,500 kilometers

500 kilometers

The Anthorn signal

is receivable within

this area.

U.S. Signal

Fort Collins

2,000 miles

(3,000 kilometers)

600 miles

(1,000 kilometers)

Rating

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