Casio 2637 Watch User Manual


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Operation Guide 2607 2637 2687
5
• Check the following points whenever you experience problems with your watch.
Problem
Cannot perform
manual receive.
Auto receive is
turned on, but
the Level 4
receiving
indicator does
not appear on
the display.
Time setting is
incorrect
following signal
reception.
Probable Cause
•
The watch is not in the Timekeeping Mode.
• You do not select one of the following
City Codes as your Home City Code:
BER, PAR , LON, or ATH.
• You changed the time setting manually.
• The watch was not in the Timekeeping
or World Time Mode, or you were
performing some button operation
during the auto signal receive operation
was performed.
•
Even if receive is successful, the Level 4
receiving indicator disappears every day
at 3am.
• Time data (hour, minutes, seconds) only
was received during the last receive
operation. The Level 4 receiving
indicator appears only when time data
and date data (year, month, day) are
both received.
• If the time is one hour off, the DST
setting may be incorrect.
• The Home City Code setting is not
correct for the area where you are using
the watch.
What you should do
• Enter the Timekeeping Mode
and try again.
• Select the correct Home City
Code.
• Perform manual signal receive
or wait until the next auto
signal receive operation is
performed.
•Check to make sure the watch
is in a location where it can
receive the signal.
• Change the DST setting to
Auto DST.
• Select the correct Home City
Code.
Auto DST (Summer Time) Switching
The time calibration signal transmitted from Mainflingen, Germany includes both
Standard Time and Daylight Saving Time (summer time) data. When auto DST
(summer time) switching is turned on, the watch switches between Standard Time and
DST (summer time) automatically in accordance with the calibration signal.
• Daylight Saving Time (DST) advances the time setting by one hour from Standard
Time. Remember that not all countries or even local areas use Daylight Saving Time.
• When using the watch within the reception range of the Mainflingen transmitter, and
BER, PAR , LON, or ATH is selected as the Home City code, select Auto DST to turn
on the auto DST (summer time) setting.
• The default DST setting is Auto DST whenever you select BER, PAR, LON or ATH
as your Home City code.
• If you experience problems receiving the time calibration signal in your area, it is
probably best to switch between Standard Time and Daylight Saving Time (summer
time) manually.
• See “To set the current time and date manually” for information about configuring DST
(summer time) settings manually.
Auto DST(
AUTO
) DST off(
OFF
) DST on(
ON
)
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down A until the city code starts to flash, which
indicates the setting screen.
2. Press C and the DST (summer time) setting screen appears.
3. Use D to cycle through the DST settings in the sequence shown below.
4. When the setting you want is selected, press A twice to exit the setting screen.
Timekeeping
• 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 power 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 the your Home City time setting.
• GMT differential is calculated by this watch based on UTC
*
data.
*
The letters “UTC” stands for “Universal Time Coordinated,” which is the world-wide
scientific standard of timekeeping. It is based upon carefully maintained atomic
(cesium) clocks that keep accurate 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 the A (AM) 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.
Power Saving Function
When turned on, the Power Saving function automatically enters a sleep state
whenever the watch is left in an area where it is dark for a certain period. The table
below shows how watch functions are affected by the Power Saving function.
• Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
• The watch will not enter the sleep state between 6:00 AM and 10:59 PM. If the
watch is already in the sleep state when 6:00 AM arrives, however, it will remain in
the sleep state.
Elapsed Time
in Dark
60 to 70 minutes
6 or 7 days
Display
Blank, with Sleep indicator (S /
SLEEP ) flashing
Blank, with Sleep indicator (S
/
SLEEP
)not flashing
Operation
All functions enabled, except
for the display
Beeper tone, backlight, display,
and auto receipt of the
calibration signal are disabled.
To recover from the sleep state
Perform any one of the following operations.
• Move the watch to a well-lit area.
It can take up to two seconds for the display to turn
on.
• Press any button.
• Angle the watch towards your face for reading.
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down A. This causes
the city code to flash, which indicates the setting
screen.
2.Press A again.
3. Press C seven times until the Power Saving on/off
screen appears.
4. Press D to toggle Power Saving on (
ONON
ONON
ON
) and off
(
OFFOFF
OFFOFF
OFF
).
5. After the setting is the way you want, press A to exit
the setting screen.
• The Power Saving on indicator is on the display in all
modes while the Power Saving is turned on.
Power saving
on indicator
Backlight Precautions
• The electro-luminescent panel that provides illumination loses power after very long
use.
• The illumination provided by the backlight may be hard 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.
• The backlight automatically turns off whenever an alarm sounds.
• Frequent use of the backlight shortens the battery operating time.
Auto light switch precautions
• Wearing the watch on the inside of your wrist as well as movement or vibration of
your arm can cause the auto light switch to activate and illuminate the display. To
avoid running down the battery, turn off the auto light switch whenever engaging in
activities that might cause frequent illumination of the display.
• The backlight may not light if the face of the watch is
more than 15 degrees above or below parallel. Make
sure that the back of your hand is parallel to the ground.
• The backlight turns off in about one second, 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 the backlight
does not light, 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, the backlight may not light until about one second after you
turn the face of the watch towards you. This does not necessarily indicate
malfunction of the backlight.
• 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.
More than 15
degrees too high
HONOLULU
ANCHORAGE
LOS ANGELES
DENVER
CHICAGO
NEW YORK
CARACAS
RIO DE JANEIRO
LONDON
PARIS
BERLIN
City
City
GMT
Other major cities in same time zone
Code
Differential
City Code Table
– – –
HNL
ANC
LAX
DEN
CHI
NYC
CCS
RIO
– – –
– – –
GMT
LON
PA R
BER
–11
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
+0
+1
PAGO PAGO
PAPEETE
NOME
SAN FRANCISCO, LAS VEGAS, VANCOUVER,
SEATTLE, DAWSON CITY
EL PASO, EDMONTON
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
TOKYO
SEOUL
ADELAIDE
SYDNEY
NOUMEA
WELLINGTON
+2
+3
+3.5
+4
+4.5
+5
+5.5
+6
+6.5
+7
+8
+9
+9.5
+10
+11
+12
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
AT H
CAI
JRS
JED
THR
DXB
KBL
KHI
DEL
DAC
RGN
BKK
HKG
TYO
SEL
ADL
SYD
NOU
WLG
• Based on data as of December 2002.
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