Casio QW-2609 Service Manual & Parts List page 10

Auto Summer Time (DST) Switching
The time calibration signal transmitted from Mainflingen, Germany includes both
Standard Time and summer time (Daylight Saving Time) data. When auto summer
time (DST) switching is turned on, the watch switches between Standard Time and
summer time (DST) 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 summer time setting.
• The default summer time 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 summer time (Daylight Saving
Time) manually.
• See "To set the current time and date manually" for information about configuring
summer time (DST) settings manually.
To select the auto 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 summer time (DST) setting screen appears.
C
3. Use to cycle through the summer time settings in the sequence shown below.
Auto DST( DST off(
AUTO
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 automatically 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 Universal Time Coordinated
(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 puts the watch into a sleep
state whenever it 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.
Elapsed Time Display
in Dark
60 to 70 minutes Blank, with Sleep indicator (S )
flashing
6 or 7 days Blank, with Sleep indicator (S )
not flashing
• Wearing 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.
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 (
( ).
OFF
5. After the setting is the way you want, press A to exit
the setting screen.
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 life.
Auto light switch precautions
• Wearing the watch on the inside of your wrist and 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.
) DST on( )
OFF ON
Operation
All functions enabled, except
for the display
Beeper tone, backlight, display,
and auto receipt of the
calibration signal are disabled.
) and off
ON
— 8 —
• The backlight may not light if the face of the watch is
More than 15
degrees too high
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.
City Code Table
City GMT
City Other major cities in same time zone
Code Differential
– – – –11 PAGO PAGO
HNL HONOLULU –10 PAPEETE
ANC ANCHORAGE –9 NOME
SAN FRANCISCO, LAS VEGAS, VANCOUVER,
LAX LOS ANGELES –8
SEATTLE, DAWSON CITY
DEN DENVER –7 EL PASO, EDMONTON
HOUSTON, DALLAS/FORT WORTH,
CHI CHICAGO –6
NEW ORLEANS, MEXICO CITY, WINNIPEG
MONTREAL, DETROIT, MIAMI, BOSTON,
NYC NEW YORK –5
PANAMA CITY, HAVANA, LIMA, BOGOTA
CCS CARACAS –4 LA PAZ, SANTIAGO, PORT OF SPAIN
SAO PAULO, BUENOS AIRES, BRASILIA,
RIO RIO DE JANEIRO –3
MONTEVIDEO
– – – –2
– – – –1 PRAIA
GMT DUBLIN, LISBON, CASABLANCA, DAKAR,
+0
LON LONDON ABIDJAN
PAR PARIS MILAN, ROME, MADRID, AMSTERDAM, ALGIERS,
+1
BER BERLIN HAMBURG, FRANKFURT, VIENNA, STOCKHOLM
ATH ATHENS HELSINKI, ISTANBUL, BEIRUT, DAMASCUS,
+2
CAI CAIRO CAPE TOWN
JRS JERUSALEM
KUWAIT, RIYADH, ADEN, ADDIS ABABA, NAIROBI,
JED JEDDAH +3
MOSCOW
THR TEHRAN +3.5 SHIRAZ
DXB DUBAI +4 ABU DHABI, MUSCAT
KBL KABUL +4.5
KHI KARACHI +5 MALE
DEL DELHI +5.5 MUMBAI, KOLKATA
DAC DHAKA +6 COLOMBO
RGN YANGON +6.5
BKK BANGKOK +7 JAKARTA, PHNOM PENH, HANOI, VIENTIANE
SINGAPORE, KUALA LUMPUR, BEIJING, TAIPEI,
HKG HONG KONG +8
MANILA, PERTH, ULAANBAATAR
TYO TOKYO PYONGYANG
+9
SEL SEOUL
ADL ADELAIDE +9.5 DARWIN
SYD SYDNEY +10 MELBOURNE, GUAM, RABAUL
NOU NOUMEA +11 PORT VILA
WLG WELLINGTON +12 CHRISTCHURCH, NADI, NAURU ISLAND
• Based on data as of June 2002.