Casio 5052 Manuale Utente

6

• 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 automatically update the date and day of the week 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.

• Normally, the signal reception date shown by the last signal screen is the date data

included in the received time calibration signal. When only time data is received,
however, the last signal screen shows the date as kept in the Timekeeping Mode at
the time of signal reception.

• If you are in an area where proper time calibration signal reception is impossible, the

watch keeps time within ±15 seconds a month at normal temperature.

• 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 following are the initial factory defaults for these
settings.

Setting
City code
DST (summer time)

Auto receive

TYO

(Tokyo)
(Auto switching)

 

(Auto receive)

Transmitter indicator

Configuring Transmitter Selection Mode Settings
Note that the transmitter selection mode setting can be configured only when 

TYO

,

SEL

, or 

HKG

 is selected as the Home City. See the map for more information.

1. In the Timekeeping Mode, hold down A until the

transmitter indicator starts to flash, which indicates the
setting screen.

• The second hand will move at high speed to the 12

o’clock position, where it will stop.

2. Use D to select the transmitter you want to use.

• Each press of D cycles through the available settings

as described below.

AT

 : The watch automatically selects the

frequency that has the strongest signal.
 : Receives the signal from Fukushima (40kHz).
 : Receives the signal from Fukuoka/Saga

(60kHz).

3. Press A twice to exit the setting screen.

• Reception can take up to 14 minutes when the 

AT

 option is selected.

• The second hand will advance at high speed to the correct position in accordance

with seconds count of the digital time, and resume normal movement from there.

• 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 day of the week is automatically displayed in accordance with the date (year,

month, and day) settings.

• 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 or when battery level drops to
Level 4.

• The current time for all city codes in the Timekeeping Mode and World Time Mode is

calculated in accordance with the Greenwich Mean Time (GMT) differential for each
city, based on your Home City time setting.

• GMT differential is calculated by this watch based on Universal Time Coordinated

(UTC*) data.

* UTC 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.
The reference point for UTC is Greenwich, England.

12-hour/24-hour Timekeeping  Formats
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is also
applied in all other modes.

• With the 12-hour format, the P (PM) indicator appears on the display for times in the

range of noon to 11:59 p.m. and no indicator appears for times in the range of
midnight to 11:59 a.m.

• With the 24-hour format, times are displayed in the range of 0:00 to 23:59 without

any indicator.

• The illumination provided by the light may be hard to see when viewed under direct sunlight.

• Illumination automatically turns off whenever an alarm sounds.

• Frequent use of illumination shortens the battery operating time.

Honolulu

Anchorage

Los Angeles

Denver

Chicago

New York

Caracas

Rio De Janeiro

London

Paris

Berlin

– – –

HNL
ANC

LAX

DEN

CHI

NYC

CCS*

RIO

– – –
– – –
GMT

LON
PAR
BER

–11.0
–10.0
–09.0

–08.0

–07.0

–06.0

–05.0

–04.0
–03.0
–02.0
–01.0

+00.0

+01.0

Pago Pago
Papeete
Nome
San Francisco, Las Vegas, Vancouver,
Seattle/Tacoma, Dawson City, Tijuana
El Paso, Edmonton, Culiacan
Houston, Dallas/Fort Worth,
New Orleans, Mexico City, Winnipeg
Montreal, Detroit, Miami, Boston,
Panama City, Havana, Lima, Bogota
La Paz, Santiago, Port Of Spain
Sao Paulo, Buenos Aires, Brasilia, Montevideo

Praia
Dublin, Lisbon, Casablanca, Dakar, Abidjan

Milan, Rome, Madrid, Amsterdam, Algiers, Hamburg,
Frankfurt, Vienna, Stockholm

Athens

Cairo

Jerusalem

Jeddah

Tehran

Dubai
Kabul

Karachi

Delhi

Dhaka

Yangon

Bangkok

Hong Kong

Seoul
Tokyo

Adelaide

Sydney

Noumea

Wellington

+02.0

+03.0
+03.5
+04.0
+04.5
+05.0
+05.5
+06.0
+06.5
+07.0

+08.0

+09.0

+09.5
+10.0
+11.0
+12.0

Helsinki, Istanbul, Beirut, Damascus,
Cape Town

Kuwait, Riyadh, Aden, Addis Ababa, Nairobi, Moscow
Shiraz
Abu Dhabi, Muscat

Male
Mumbai, Kolkata, Colombo

Jakarta, Phnom Penh, Hanoi, Vientiane
Singapore, Kuala Lumpur, Beijing, Taipei, Manila, Perth,
Ulaanbaatar
Pyongyang

Darwin
Melbourne, Guam, Rabaul
Port Vila
Christchurch, Nadi, Nauru Island

ATH

CAI

JRS
JED

THR
DXB

KBL

KHI

DEL
DAC

RGN

BKK

HKG

SEL
TYO
ADL

SYD

NOU
WLG

• Based on data as of March 2008.

• The rules governing global times (GMT differential and UTC offset) and summer time

are determined by each individual country.

* In December 2007, Venezuela changed its offset from –4.0 to –4.5. Note however, that

this watch displays an offset of –4.0 (the old offset) for the CCS (Caracas, Venezuela)
city code.