© 2012 CASIO COMPUTER CO., LTD.
MO1202-EA
Operation Guide 3278/3279
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.
Warning!
• The measurement functions built into this watch are not intended for taking
measurements that require professional or industrial precision. Values produced
by this watch should be considered as reasonable representations only.
• The Moon phase indicator and tide graph data that appear on the display of this
watch are not intended for navigation purposes. Always use proper instruments
and resources to obtain data for navigation purposes.
• This watch is not an instrument for calculating low tide and high tide times. The
tide graph of this watch is intended to provide a reasonable approximation of
tidal movements only.
• Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any
damage or loss suffered by you or any third party arising through the use of this
product or its malfunction.
E-1
Keep the watch exposed to bright light
l l l l l l l l l
Solar panel
l
l
Bright Light
The electricity generated by the solar panel of the watch is
stored by a rechargeable battery. Leaving or using the
watch where it is not exposed to light causes the battery
to run down. Make sure the watch is exposed to light as
much as possible.
• When you are not wearing the watch on your wrist,
position the face so it is pointed at a source of bright
light.
• You should try to keep the watch outside of your sleeve
as much as possible. Charging is reduced significantly if
the face is covered only partially.
• The watch continues to operate, even when it is not exposed to light. Leaving the
watch in the dark can cause the battery to run down, which will result in some watch
functions to be disabled. If the battery goes dead, you will have to re-configure watch
settings after recharging. To ensure normal watch operation, be sure to keep it
exposed to light as much as possible.
Battery charges in the light.
Solar panel
(Converts light to
electrical power.)
Battery discharges in the dark.
Bright Light
Electrical
energy
LEVEL 1
LEVEL 2
All
functions
enabled
LEVEL 3
Charge LEVEL 4
LEVEL 1
LEVEL 2
Dis- LEVEL 3
charge
LEVEL 4
Some or all
functions
disabled
Rechargeable battery
E-2
• The actual level at which some functions are disabled depends on the watch model.
• Be sure to read “Power Supply” (page E-59) for important information you
need to know when exposing the watch to bright light.
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch’s Power Saving function
has turned off the display to conserve power.
• See “Power Saving Function” (page E-85) for more information.
E-3
About This Manual
• Depending on the model of your watch, display text appears either as dark figures
on a light background (Module 3278), or light figures on a dark background (Module
3279). All of the illustrations in this manual show Module 3278.
• Button operations are indicated using the letters shown in the illustration.
• Each section of this manual provides you with the information you need to perform
operations in each mode. Further details and technical information can be found in
the “Reference” section.
Module 3278
E-4
Contents
General Guide ....................................................................................................... E-10
Radio-controlled Atomic Timekeeping ............................................................... E-12
Tide/Moon Data ..................................................................................................... E-34
World Time ............................................................................................................. E-41
Alarms .................................................................................................................... E-44
Stopwatch .............................................................................................................. E-49
Countdown Timer .................................................................................................. E-51
Illumination ............................................................................................................ E-55
Power Supply ........................................................................................................ E-59
Timekeeping .......................................................................................................... E-67
Tide Site Name ...................................................................................................... E-75
Reference .............................................................................................................. E-78
Specifications ....................................................................................................... E-93
E-6
Module 3279
E-5
Procedure Lookup
The following is a handy reference list of all the operational procedures contained in
this manual.
To specify your Home City ................................................................................... E-13
To perform manual receive .................................................................................. E-27
To turn auto receive on and off ........................................................................... E-29
To check the latest signal reception results ...................................................... E-30
To adjust the high tide time ................................................................................. E-38
To reverse the displayed Moon phase ................................................................ E-40
To view the time in another city ........................................................................... E-42
To toggle a city code time between Standard Time and
Daylight Saving Time ...................................................................................... E-43
E-7
To set an alarm time ............................................................................................. E-45
To change the Daylight Saving Time (summer time) setting ............................ E-73
To test the alarm ................................................................................................... E-46
To configure tide site settings ............................................................................. E-75
To turn an alarm on and off .................................................................................. E-47
To turn the button operation tone on and off ..................................................... E-84
To turn the Hourly Time Signal on and off .......................................................... E-48
To recover from the sleep state ........................................................................... E-86
To measure times with the stopwatch ................................................................ E-50
To turn Power Saving on and off ......................................................................... E-86
To configure the countdown timer ...................................................................... E-52
To use the countdown timer ................................................................................ E-54
To illuminate the display manually ...................................................................... E-55
To specify the illumination duration ................................................................... E-56
To turn the auto light switch on and off .............................................................. E-58
To set the time and date manually ...................................................................... E-68
E-8
E-9
Operation Guide 3278/3279
World Time Mode
General Guide
Stopwatch Mode
C
▲
Countdown Timer Mode
▲
▲
▲
C
C
C
▲
C
Alarm Mode
▲
• Press C to change from mode to mode.
• In any mode (except when a setting screen is on the display), press L to illuminate
the display.
• When you return to the Timekeeping Mode, the day of the week will be displayed
after the name of the site you selected. See “Tide Site Name List” (page L-2) for
more information about the site.
Tide/Moon Data Mode
Timekeeping Mode
C
E-10
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-13).
• 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-67) 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.
E-12
YVR, LAX : Vancouver, Los Angeles
YEA, DEN: Edmonton, Denver
MEX, CHI : Mexico City, Chicago
NYC
: New York
YHZ
: Halifax
YYT
: St.Johns
3. Press A twice 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-27) or you can set the time manually (page E-68).
• 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-88).
• See the maps under “Approximate Reception Ranges” (page E-19) for information
about the reception ranges of the watch.
• As of December 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 until the city
code starts to flash, which indicates the setting screen.
City code
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
Seconds
SEL, TYO : Seoul, Tokyo
Hour : Minutes
HNL
: Honolulu
PM indicator
ANC
: Anchorage
E-13
• You can disable time signal reception, if you want. See “To turn auto receive on and
off” on page E-29 for more information.
• Under factory default settings, auto receive is turned off for all of the following city
codes: MOW (Moscow), 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-29.
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-27).
E-14
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.
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
Inside or
among
buildings
12 o’clock
or
Inside a
vehicle
Near
household
appliances,
office
equipment,
or a mobile
phone
Among or
Near highNear a
construction tension power behind
mountains
site, airport, lines
or other
sources of
electrical
noise
• 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.
• Make sure the watch is facing the right way.
E-16
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
LIS, LON, MAD, PAR, ROM,
BER, STO, ATH, MOW*
HKG, BJS
TPE, SEL, TYO
HNL*, ANC*, YVR, LAX, YEA,
DEN, MEX, CHI, NYC, YHZ, YYT
Transmitter
Anthorn (England)
Mainflingen (Germany)
Shangqiu City (China)
Fukushima (Japan)
Fukuoka/Saga (Japan)
Fort Collins, Colorado
(the United States)
Frequency
60.0 kHz
77.5 kHz
68.5 kHz
40.0 kHz
60.0 kHz
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.K. and German Signals
1,500 kilometers
Mainflingen
Anthorn
North American Signal
500 kilometers
The Anthorn signal
is receivable within
this area.
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
E-19
Operation Guide 3278/3279
Japan Signals
500 kilometers
500 kilometers
Fukushima
Fukuoka/Saga
1,000 kilometers
1,000 kilometers
Signals are receivable in the Taiwan area when reception conditions are good.
China Signal
1,500 kilometers
Changchun
500 kilometers
Beijing
• Signal reception may not be possible at the distances noted below during certain
times of the year or day. Radio interference also may cause problems with reception.
Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers
(310 miles)
Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
Shangqiu (China) transmitter: 1,500 kilometers (910 miles)
• Even when the watch is within the reception range of the transmitter, signal
reception will be impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source.
• Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
• See the information under “Signal Reception Troubleshooting” (page E-31) if you
experience problems with time calibration signal reception.
Shanghai
Chengdu
Hong Kong
Shangqiu
E-20
E-21
About 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. The reception
schedule (calibration times) depends on your currently selected Home City, and
whether standard time or Daylight Saving Time is selected for your Home City.
Standard Time
Daylight Saving Time
Standard Time
Daylight Saving Time
1
1:00 am
2:00 am
2:00 am
3:00 am
Auto Receive Start Times
2
3
4
5
2:00 am 3:00 am 4:00 am 5:00 am
3:00 am 4:00 am 5:00 am Midnight*
3:00 am 4:00 am 5:00 am Midnight*
4:00 am 5:00 am Midnight* 1:00 am*
Standard Time
Daylight Saving Time
MOW Standard Time
Daylight Saving Time
3:00 am
4:00 am
4:00 am
5:00 am
4:00 am
5:00 am
5:00 am
Midnight*
Your Home City
LIS
LON
MAD
PAR
ROM
BER
STO
ATH
5:00 am
Midnight*
Midnight*
1:00 am*
Midnight*
1:00 am*
1:00 am*
2:00 am*
1:00 am*
2:00 am*
2:00 am*
3:00 am*
6
Midnight*
1:00 am*
1:00 am*
2:00 am*
2:00 am*
3:00 am*
3:00 am*
4:00 am*
Auto Receive Start Times
1
2
3
4
5
Standard Time and
1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
Daylight Saving Time
Standard Time
Midnight 1:00 am 2:00 am 3:00 am 4:00 am
Your Home City
HKG
BJS
TPE
SEL
TYO
HNL
ANC
YVR
LAX
YEA
DEN
MEX
CHI
NYC
YHZ
YYT
Standard Time and
Midnight 1:00 am
Daylight Saving Time
2:00 am
3:00 am
4:00 am
6
5:00 am
5:00 am
*Next day
E-22
E-23
Note
• When a calibration time is reached, the watch will receive the calibration signal only
if it is in either the Timekeeping Mode or World Time Mode. Reception is not
performed if a calibration time is reached while you are configuring settings.
• Auto receive of the calibration signal is designed to be performed early in the
morning, while you sleep (provided that the Timekeeping Mode time is set correctly).
Before going to bed for the night, remove the watch from your wrist, and put it in a
location where it can receive the signal easily.
• The watch receives the calibration signal for two to seven minutes everyday when
the time in the Timekeeping Mode reaches a calibration time. Do not perform any
button operation within seven minutes before or after the calibration times. Doing so
can interfere with correct calibration.
• Remember that reception of the calibration signal depends on the current time in the
Timekeeping Mode. The receive operation will be performed whenever the display
shows any one of the calibration times, regardless of whether or not the displayed
time actually is the correct time.
About the Signal Strength Indicator
The signal strength indicator shows the strength of the calibration signal being
received. For best reception, be sure to keep the watch in a location where signal
strength is strongest. The signal strength indicator is displayed while an auto or
manual receive operation is in progress.
RCVD indicator
Signal strength indicator
Weak
Strong
• Even in an area where signal strength is strong, it takes about 10 seconds for signal
reception to stabilize enough for the indicator to indicate signal strength.
E-24
E-25
• Use the signal strength indicator as a guide for checking signal strength and for
finding the best location for the watch during signal receive operations.
• Following reception of the time calibration signal and calibration of the watch’s time
setting, the RCVD indicator will remain on the display in all modes. The RCVD
indicator will not be displayed if signal reception was unsuccessful or after you
adjust the current time setting manually.
• The RCVD indicator is displayed only when the watch is able to receive both time
and date data successfully. It does not appear when only time data is received.
• The RCVD indicator indicates that at least one calibration signal receive operation
(auto or manual) was successful during the current day. Note that the RCVD
indicator disappears from the display each day when the first receive operation of
the day is performed.
E-26
E-27
Receive failed
If there was a previously
successful reception
E-28
To perform manual receive
1. Enter the Timekeeping Mode (page E-10).
Receiving
2. Hold down D for about two seconds until the RCVD
indicator starts to flash on the display. This indicates
that manual receive is in progress.
• Time calibration signal reception takes from two to
seven minutes. Take care that you do not perform
any button operations or move the watch during this
time.
• If the receive operation is successful, the reception
date and time appear on the display, along with the
Receive successful
GET indicator.
3. After manual receive is complete, press D to return to
normal timekeeping.
• The watch also will return to normal timekeeping if you
do not perform any button operation for about one or
two minutes.
• If the latest reception fails but a previous reception was
successful during the current day, the RCVD indicator
will be on the display.
• The watch will return to normal timekeeping without
changing the time setting if you press D or if you do not
perform any button operation for about one or two
minutes.
Note
• To interrupt a receive operation and return to normal
timekeeping, press D.
To turn auto receive on and off
1. In the Timekeeping Mode, press D to display the latest
successful receive time and date screen (page E-30).
2. Hold down A until the current auto receive setting (
or
) starts to flash. This is the setting screen.
• Note that the setting screen will not appear if the
currently selected Home City is one that does not
support time calibration reception.
3. Press D to toggle auto receive on ( ) and off (
).
4. Press A to exit the setting screen.
On/Off status
• For information about city codes that support signal
receive, see “To specify your Home City” (page E-13).
E-29
Operation Guide 3278/3279
To check the latest signal reception results
Press D to view the latest successful receive time and
date. Press D again to return to the previous screen.
• The watch will return to the previous screen automatically
if you do not perform any operation for two or three
minutes.
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem
Probable Cause
What you should do
Cannot perform • The watch is not in the
• Enter the Timekeeping Mode
manual receive. Timekeeping Mode.
and try again.
• Select LIS, LON, MAD, PAR,
• Your current Home City is not
one of the following: LIS, LON,
ROM, BER, STO, ATH, MOW,
MAD, PAR, ROM, BER, STO,
HKG, BJS, TPE, SEL, TYO,
ATH, MOW, HKG, BJS, TPE,
HNL, ANC, YVR, LAX, YEA,
SEL, TYO, HNL, ANC, YVR,
DEN, MEX, CHI, NYC, YHZ, or
LAX, YEA, DEN, MEX, CHI,
YYT as your Home City (page
NYC, YHZ, or YYT
E-13).
• A countdown timer operation is • Enter the Countdown Timer
in progress.
Mode and stop the countdown.
(page E-51)
E-30
E-31
Problem
Auto receive is
turned on, but
the RCVD
indicator does
not appear on
the display.
Probable Cause
What you should do
• You changed the time setting
• Perform manual signal receive
or wait until the next auto
manually.
signal receive operation is
• The DST setting was changed
manually in the World Time Mode. performed.
• You pressed a button while
• Check to make sure the watch
signal receive was in progress.
is in a location where it can
• Even if receive is successful, the receive the signal (page E-16).
RCVD indicator will disappear
from the display each day when
the first auto receive operation
of the day is performed.
• Time data (hour, minutes,
seconds) only was received
during the last receive
operation. The RCVD indicator
appears only when time data
and date data (year, month,
day) are both received.
Problem
Time setting
is incorrect
following
signal
reception.
Probable Cause
• 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.
• For further information, see “Important!” (page E-16) and “Radio-controlled Atomic
Timekeeping Precautions” (page E-87).
E-32
E-33
Tide Data
Tide/Moon Data
In the Tide/Moon Data Mode, you can see the tide at a specified time for the tide site
you selected and the current date’s moon phase for your Home City. You can specify a
date and view tide and moon data for that date.
• See “Moon Phase Indicator” (page E-78) for information about the moon phase
indicator and “Tide Graph” (page E-82) for information about the tide graph.
• All of the operations in this section are performed in the Tide/Moon Data Mode
(page E-10).
Note
• It takes about two seconds to calculate tide graph data. You will not be able to
display a setting screen while data calculation is in progress.
• Moon age is calculated to an accuracy of ±1 day.
• You can view the current tide and moon age graph in the Timekeeping Mode (page
E-10).
The Tide Graph that appears first when you enter the Tide/Moon Data Mode shows
the data at 6:00 a.m. for your currently selected tide site on the current date, according
to the Timekeeping Mode. From there you can specify another time on the same date.
• If the tide data is not correct, check your Timekeeping Mode settings and correct them
if necessary. See “To configure tide site settings” (page E-75) for more information.
• If you feel that the information shown by the Tide Graph is different from actual tide
conditions, you need to adjust the high tide time. See “Adjusting the High Tide Time”
(page E-37) for more information.
Moon Data
The moon phase and moon age information that appears first when you enter the
Tide/Moon Data Mode shows the data at noon for your currently selected Home City
on the current date, according to the Timekeeping Mode. After that you can specify
another date to view data.
• If the moon data is not correct, check your Timekeeping Mode settings and correct
them if necessary.
• If the moon phase indicator shows a phase that is a mirror image of the actual moon
phase in your area, you can use the procedure under “Reversing the Displayed
Moon Phase” (page E-39) to change it.
E-34
E-35
Tide/Moon Data Screens
In the Tide/Moon Data Mode, press A to toggle between the tide data screen and the
moon data screen.
Tide Data Screen
Moon Data Screen
Current tide range
Time
Month – Day
A
Moon phase
• When you display the Tide Data Screen, it initially shows tide data for 6:00 a.m. Use
the Tide Data Screen to specify the Tide Data time. You can press D and B to
change the displayed time in one-hour increments. The Tide Data time is scrolled
within the current date only. Scrolling past midnight does not change the date.
• Use the Moon Data Screen to specify the Tide/Moon Data date. You can press D
and B to change the displayed date in one-day increments. Pressing D and B will
display the year of the displayed date.
Adjusting the High Tide Time
Use the following procedure to adjust the high tide time within a particular date. You
can find out high tide information for your area from a tide table, the Internet, or your
local newspaper.
▲
▲
Current tide level
Moon age Month – Day
E-36
To adjust the high tide time
1. In the Tide/Moon Data Mode, press A to display the
Moon Data Screen (page E-36).
2. Press D to scroll the date until one whose high tide
time you want to change is displayed.
3. Hold down A until the hour digits start to flash.
4. Press D (+) and B (–) to change the hour setting.
5. When the hour is the setting you want, press C.
• This will cause the minute digits to flash.
Hour
6. Press D (+) and B (–) to change the minute setting.
7. When the minute setting is the way you want, press A
to exit the adjustment screen and return to the Tide/
Moon Data Mode screen.
• Pressing D and B at the same time while the time
adjustment screen is displayed (steps 4 through 7
above) will return the high tide time to its initial factory
default setting.
•
The high tide time setting is affected by the DST
Minute
(summer time) setting of the Timekeeping Mode.
E-38
What you should do
• Change the DST setting to
Auto DST (page E-73).
• Select the correct Home City
code (page E-13).
E-37
• On some days, there are two high tides. With this watch, you can adjust the first high
tide time only. The second high tide time for that day is adjusted automatically based
on the first high tide time.
Reversing the Displayed Moon Phase
The left-right (east-west) appearance of the Moon depends on whether the Moon is
north of you (northerly view) or south of you (southerly view) as you view it.
You can use the procedure below to reverse the displayed Moon phase so it matches
the actual appearance of the Moon where you are located.
• To determine the viewing direction of the Moon, use a compass to take a direction
reading of the Moon at its meridian passage.
• For information about the Moon phase indicator, see “Moon Phase Indicator” (page
E-78).
E-39
Operation Guide 3278/3279
To reverse the displayed Moon phase
1. In the Tide/Moon Data Mode, hold down A until the
hour digits start to flash.
2. Press C twice.
• This will cause the Moon phase indicator to flash. This
is the indicator switching screen.
3. Press D to toggle the Moon phase indicator between
the southerly view (indicated by
) and northerly
).
view (indicated by
• Northerly view: Moon is north of you.
• Southerly view: Moon is south of you.
4. When the Moon phase indicator setting is the way you
want, press A to exit the switching screen and return
to the Tide/Moon Data Mode screen.
World Time
City code
Current time in
selected city
World Time shows the current time in 48 cities (31 time
zones) around the world.
• The times kept in the World Time Mode are
synchronized with the time being kept in the
Timekeeping Mode. If you feel that there is an error in
any World Time Mode time, check to make sure you
have the correct city selected as your Home City. Also
check to make sure that the current time as shown in
the Timekeeping Mode is correct.
• Select a city code in the World Time Mode to display the
current time in any particular time zone around the
globe. See the “City Code Table” at the back of this
manual for information about the UTC differential
settings that are supported.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C
(page E-11).
E-40
E-41
To view the time in another city
While in the World Time Mode, press D (eastward) and B (westward) to scroll
through the city codes (time zones).
• Pressing the D and B at the same time will jump to the UTC time zone.
To toggle a city code time between Standard Time and Daylight Saving Time
1. In the World Time Mode, press D and B to display the
city code (time zone) whose Standard Time/Daylight
Saving Time setting you want to change.
2. Hold down A to toggle between Daylight Saving Time
(DST indicator displayed) and Standard Time (DST
indicator not displayed).
• The DST indicator is shown on the World Time Mode
screen while Daylight Saving Time is turned on.
• Note that the Standard Time/Daylight Saving Time
DST indicator
setting affects only the currently displayed city code.
Other city codes are not affected.
• Note that you cannot switch between Standard Time
and Daylight Saving Time while UTC is selected as the
city code.
E-42
E-43
To set an alarm time
Alarms
Alarm number
Alarm time
(Hour : Minutes)
The Alarm Mode gives you a choice of five daily alarms,
one of which is a snooze alarm.
Also use the Alarm Mode to turn the Hourly Time Signal
(SIG) on and off.
• The snooze alarm screen is indicated by SNZ, while
the other alarm screens are numbered AL1through
AL4. The Hourly Time Signal screen is indicated by
SIG.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C (page
E-11).
E-44
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in. In the case of the snooze alarm, the alarm operation is performed a total
of seven times, every five minutes, until you turn the alarm off (page E-47).
• Alarm and Hourly Time Signal operations are performed in accordance with the
Timekeeping Mode time.
• To stop the alarm tone after it starts to sound, press any button.
• Performing any one of the operations below during a 5-minute interval between
snooze alarms cancels the current snooze alarm operation.
Displaying the Timekeeping Mode setting screen (page E-68)
Displaying the SNZ setting screen (page E-45)
To test the alarm
In the Alarm Mode, hold down D to sound the alarm.
D
• To set an alarm time, display the applicable alarm screen (AL1through AL4, or
SNZ).
• The snooze alarm operation repeats every five minutes.
2. After you select an alarm, hold down A until the hour setting of the alarm time
starts to flash, which indicates the setting screen.
• This operation turns on the alarm automatically.
3. Press C to move the flashing between the hour and minute settings.
4. While a setting is flashing, press D (+) and B (–) to change it.
• With the 12-hour format, set the time correctly as a.m. or p.m. (P indicator).
5. Press A to exit the setting screen.
E-45
To turn an alarm on and off
1. In the Alarm Mode, press D to select an alarm.
2. Press B to toggle it on and off.
• Turning on a alarm (AL1, AL2, AL3, AL4 or
Alarm on
indicator
SNZ) displays the alarm on indicator on its Alarm Mode
screen.
• In all modes, the alarm on indicator is shown for any
alarm that currently is turned on.
• The alarm on indicator flashes while the alarm is
sounding.
• The snooze alarm indicator flashes while the snooze
alarm is sounding and during the 5-minute intervals
between alarms.
ON
Snooze alarm indicator
E-47
Stopwatch
Seconds
1/100 second
Minutes
E-48
D
D
E-46
To turn the Hourly Time Signal on and off
1. In the Alarm Mode, press D to select the Hourly Time
Hourly time signal
Signal (SIG).
on indicator
2. Press B to toggle it on and off.
• The Hourly Time Signal on indicator is shown on the
display in all modes while this function is turned on.
1. In the Alarm Mode, press D to scroll through the alarm
screens until the one whose time you want to set is
displayed.
D
D
D
The stopwatch lets you measure elapsed time, split times,
and two finishes.
• The display range of the stopwatch is 59 minutes, 59.99
seconds.
• The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.
• The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.
• Exiting the Stopwatch Mode while a split time is frozen
on the display clears the split time and returns to
elapsed time measurement.
• All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing C (page
E-11).
E-49
Operation Guide 3278/3279
To measure times with the stopwatch
Elapsed Time
D
Start
Split Time
D
Start
Two Finishes
D
Start
Countdown Timer
➤D
Stop
➤D
Re-start
➤D
Stop
➤B
Clear
➤B
Split
(SPL displayed)
➤B
Split release
➤D
Stop
➤B
Clear
➤B
Split release
Display time of
second runner.
➤B
Clear
➤B
➤D
Split
Stop
First runner finishes. Second runner
Display time of first finishes.
runner.
Dual timers can be set with two different starting times.
The watch can be configured so the two timers alternate,
so when one reaches the end of its countdown, the other
timer starts. You can specify a “number of repeats” value,
which controls how many times the two-timer countdown
operation is performed (1 = once, 2 = twice, etc.) The
starting time of each timer can be set in five-second steps
up to 99 minutes, 55 seconds.
You can specify up to 10 repeats. The watch emits a short
beep whenever either of the timers reaches the end of its
countdown during an ongoing timer operation. The watch
emits a 5-second beep when the end of the final timer
operation (specified by the number of repeats) is reached.
Number of Repeats
Minutes
Seconds
Timer 1
Countdown End Beeper
The countdown end beeper lets you know when the countdown reaches zero. The
beeper stops after about 5 seconds or when you press any button.
E-50
To configure the countdown timer
1.While the countdown start time is on the display in the
Countdown Timer Mode, hold down A until the current
countdown start time starts to flash, which indicates the
setting screen.
• If the countdown start time is not displayed, use the
procedure under “To use the countdown timer” (page
E-54) to display it.
2. Press C to move the flashing in the sequence shown
below to select other settings.
Setting
Minutes, Seconds
Screen
E-51
Button Operation
Press D (+) and B (–) to change the setting.
Press D (+) and B (–) to change the setting.
Number of Repeats
• To disable either timer, set 00'00" as its countdown start time.
4. Press A to exit the setting screen.
3. When the setting you want to change is flashing, press D and B to change it as
described below.
E-52
E-53
To use the countdown timer
Current repeat count
Current timer time
Preset number of repeats
(Reset)
Illumination
An LED (light-emitting diode) illuminates the face of the
watch for easy reading in the dark. The watch’s auto light
switch turns on illumination automatically when you angle
the watch towards your face.
• The auto light switch must be turned on (indicated by
the auto light switch on indicator) for it to operate.
• See “Illumination Precautions” (page E-91) for other
important information about using illumination.
Current time
Timer 1 or 2
(Start/Stop)
Press D while in the Countdown Timer Mode to start the countdown timer.
• The countdown is performed by alternating between Timer 1 and Timer 2. A short
beep is emitted to signal a changeover from one timer to the other.
• Press D to pause a countdown. Press D again to resume.
• Pressing B while a countdown timer is stopped resets the timers to the start times
specified by you.
• The watch emits a 5-second beep when the end of the final timer operation
(specified by the number of repeats) is reached.
• The countdown operation continues and the watch beeps when required even if you
exit the Countdown Timer mode.
• To stop a countdown operation completely, first pause it (by pressing D), and then
press B. This returns the countdown time to its starting value.
Auto light switch on
indicator
To illuminate the display manually
In any mode (except when a setting screen is on the
display), press L to turn on illumination.
• The above operation turns on illumination regardless of
the current auto light switch setting.
E-54
• You can use the procedure below to select either 1.5 seconds or 3 seconds as the
illumination duration. When you press L, the illumination will remain on for about
1.5 seconds or 3 seconds, depending on the current illumination duration setting.
To specify the illumination duration
1. In the Timekeeping Mode, hold down A until the
display contents start to flash. This is the setting screen.
2. Press C 10 times until the current illumination duration
setting (
or
) appears.
3. Press D to toggle the setting between
(approximately 1.5 seconds) and
(approximately
3 seconds).
4. Press A twice to exit the setting screen.
E-55
About the Auto Light Switch
Turning on the auto light switch causes illumination to turn on, whenever you position
your wrist as described below in any mode. Note that this watch features a “Full Auto
LED Light”, so the auto light switch operates only when available light is below a
certain level. It does not illuminate the display under bright light.
Moving the watch to a position that is parallel to the ground and then tilting it towards
you more than 40 degrees causes illumination to turn on.
• Wear the watch on the outside of your wrist.
Parallel to
ground
More than 40°
E-56
Warning!
• Always make sure you are in a safe place whenever you are reading the
display of the watch using the auto light switch. Be especially careful when
running or engaged in any other activity that can result in accident or injury.
Also take care that sudden illumination by the auto light switch does not
startle or distract others around you.
• When you are wearing the watch, make sure that its auto light switch is
turned off before riding a bicycle or operating a motorcycle or any other
motor vehicle. Sudden and unintended operation of the auto light switch can
create a distraction, which can result in a traffic accident and serious
personal injury.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down L for about three seconds to toggle the auto
light switch on (auto light switch on indicator displayed) and off (auto light switch on
indicator not displayed).
• The auto light switch on indicator is on the display in all modes while the auto light
switch is turned on.
E-58
E-57
Power Supply
This watch is equipped with a solar panel and a rechargeable battery that is charged
by the electrical power produced by the solar panel. The illustration shown below
shows how you should position the watch for charging.
Example: Orient the watch so its face is
pointing at a light source.
• The illustration shows how to position a
watch with a resin band.
• Note that charging efficiency drops when
any part of the solar panel is blocked by
clothing, etc.
• You should try to keep the watch outside of
your sleeve as much as possible. Charging
is reduced significantly if the face is
covered only partially.
Solar panel
E-59
Operation Guide 3278/3279
Battery Power Indicator and Recover Indicator
The battery power indicator on the display shows you the current status of the
rechargeable battery’s power.
Level
1
Battery Power Indicator
l l l ll
ll l
3
l
Battery power
indicator
Function Status
All functions enabled.
All functions enabled.
2
ll
ll l l l ll
Important!
• Storing the watch for long periods in an area where there is no light or wearing it in
such a way that it is blocked from exposure to light can cause rechargeable battery
power to run down. Be sure that the watch is exposed to bright light whenever
possible.
• This watch uses a rechargeable battery to store power produced by the solar panel,
so regular battery replacement is not required. However, after very long use, the
rechargeable battery may lose its ability to achieve a full charge. If you experience
problems getting the rechargeable battery to charge fully, contact your dealer or
CASIO distributor about having it replaced.
• Never try to remove or replace the watch’s rechargeable battery yourself. Use of the
wrong type of battery can damage the watch.
• All data stored in memory is deleted, and the current time and all other settings
return to their initial factory defaults whenever battery power drops to Level 5 (pages
E-61and E-62) and when you have the battery replaced.
• Turn on the watch’s Power Saving function (page E-85) and keep it in an area
normally exposed to bright light when storing it for long periods. This helps to keep
the rechargeable battery from going dead.
Auto and manual receive,
illumination, and beeper
disabled.
(Charge Soon Alert)
4
Except for timekeeping and
the CHG (charge) indicator,
all functions and display
indicators disabled.
All functions disabled.
5
E-60
E-61
• The flashing LOW indicator at Level 3 tells you that battery power is very low, and
that exposure to bright light for charging is required as soon as possible.
• At Level 5, all functions are disabled and settings return to their initial factory
defaults. Once the battery reaches Level 2 after falling to Level 5, reconfigure the
current time, date, and other settings.
• The watch’s Home City code setting will change automatically to TYO (Tokyo)
whenever the battery drops to Level 5. With this Home City code setting, the watch is
configured to receive the time calibration signals of Japan. If you are using the watch
in North America or Europe, or China you will need to change the Home City code
setting to match your location whenever the battery drops to Level 5.
• Display indicators reappear as soon as the battery is charged from Level 5 to Level 2.
• Leaving the watch exposed to direct sunlight or some other very strong light source
can cause the battery power indicator to show a reading temporarily that is higher
than the actual battery level. The correct battery level should be indicated after a few
minutes.
Recover indicator
• Performing illumination, or beeper operations during a
short period may cause the recover indicator to appear
on the display. Illumination, alarm, countdown timer
alarm, hourly time signal operations and receive
operation will be disabled until battery power recovers.
After some time, battery power will recover and the
recover indicator will disappear, indicating that the
above functions are enabled again.
• If the recover indicator appears frequently, it probably
means that remaining battery power is low. Leave the
watch in bright light to allow it to charge.
E-62
E-63
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid leaving
the watch in the areas described below whenever charging its rechargeable battery.
Also note that allowing the watch to become very hot can cause its liquid crystal
display to black out. The appearance of the LCD should become normal again when
the watch returns to a lower temperature.
Warning!
Leaving the watch in bright light to charge its rechargeable battery can cause it
to become quite hot. Take care when handling the watch to avoid burn injury.
The watch can become particularly hot when exposed to the following
conditions for long periods.
• On the dashboard of a car parked in direct sunlight
• Too close to an incandescent lamp
• Under direct sunlight
Charging Guide
The following table shows the amount of time the watch needs to be exposed to light
each day in order to generate enough power for normal daily operations.
Exposure Level (Brightness)
Outdoor Sunlight (50,000 lux)
Sunlight Through a Window (10,000 lux)
Daylight Through a Window on a Cloudy Day (5,000 lux)
Indoor Fluorescent Lighting (500 lux)
Approximate
Exposure Time
5 minutes
24 minutes
48 minutes
8 hours
• For details about the battery operating time and daily operating conditions, see the
“Power Supply” section of the Specifications (page E-95).
• Stable operation is promoted by frequent exposure to light.
E-64
E-65
Recovery Times
The table below shows the amount exposure that is required to take the battery from
one level to the next.
2 hours
21 hours
6 hours
8 hours
105 hours
29 hours
16 hours
--------
--------
Outdoor Sunlight
(50,000 lux)
Sunlight Through a
Window (10,000 lux)
Daylight Through a
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent
Lighting (500 lux)
Current Time
Day of week
time and date.
Read This Before You Set the Time and Date!
Hour : Minutes
Seconds
PM indicator
▲
Tide site name
183 hours
--------
Press B button to view the current tide site name setting.
Month – Day Use the Timekeeping Mode to set and view the current
▲
Level 1
▲
Level 2
▲
Approximate Exposure Time
Level 5
Level 4
Level 3
▲
Exposure Level
(Brightness)
Timekeeping
--------
• The above exposure time values are all for reference only. Actual required exposure
times depend on lighting conditions.
B
This watch is preset with a number of city codes, each of
which represents the time zone where that city is located.
When setting the time, it is important that you first select
the correct city code for your Home City (the city where
you normally use the watch). If your location is not
included in the preset city codes, select the preset city
code that is in the same time zone as your location.
• Note that all of the times for the World Time Mode city
codes (page E-41) are displayed in accordance with the
time and date settings you configure in the Timekeeping
Mode.
E-66
E-67
To set the time and date manually
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Press D and B to select the city code you want.
• Make sure you select your Home City code before
changing any other setting.
• For full information on city codes, see the “City Code
Table” at the back of this manual.
3. Press C to move the flashing in the sequence shown below to select the other
settings.
C
Power Saving
C
E-68
C
DST
City Code
C
12/24-Hour
Format
Illumination
Duration
C
C
C
Seconds
Button
Operation Tone
C
Hour
Day
C
C
Minutes
Month
C
Year
C
• The following steps explain how to configure timekeeping settings only.
4. When the timekeeping setting you want to change is flashing, press D or B to
change it as described below.
Screen:
To do this:
Change the city code
Do this:
Press D (east) and B
(west).
Cycle between Auto DST (
), Daylight Press D.
Saving Time (
) and Standard Time
(
).
Toggle between 12-hour (
) and 24- Press D.
hour (
) timekeeping
Press D.
Reset the seconds to
Change the hour and minutes
Press D (+) and B (–).
E-69
Operation Guide 3278/3279
Screen:
/
To do this:
Change the year, month, or day
Do this:
Press D (+) and B (–).
Toggle the button operation tone between Press D.
(on) and
(off)
Press D.
Toggle the illumination duration between
(approximately 1.5 seconds) and
(approximately 3 seconds).
Toggle between Power Saving on ( ) and Press D.
off (
)
5. Press A twice to exit the setting screen.
• For details about the Button Operation Tone, see “To turn the button operation tone
on and off” (page E-84). For details about the Illumination duration, see “To specify
the illumination duration” (page E-56). For details about the Power Saving setting,
see “To turn Power Saving on and off” (page E-86).
• Auto DST (
) can be selected only while LIS, LON, MAD, PAR, ROM, BER,
STO, ATH, MOW, TPE, SEL, TYO, HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI,
NYC, YHZ, or YYT is selected as the Home City code. For more information, see
“Daylight Saving Time (DST)” (page E-72).
• The day of the week is displayed automatically in accordance with the date (year,
month, and day) settings.
12-hour and 24-hour timekeeping
• With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for
times in the range of noon to 11:59 p.m. and no indicator appears to the left of the
hour digits 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 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
E-70
E-71
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
The time calibration signals transmitted from Mainflingen (Germany), Anthorn
(England), or Fort Collins (the United States) include both Standard Time and DST
data. When the Auto DST setting is turned on, the watch switches between Standard
Time and DST (summer time) automatically in accordance with the signals.
• Though the time calibration signals transmitted by the Fukushima and Fukuoka/
Saga, Japan transmitters include summer time data, summer time currently is not
implemented in Japan (as of 2010).
• The default DST setting is Auto DST (
) whenever you select LIS, LON, MAD,
PAR, ROM, BER, STO, ATH, MOW, TYO, ANC, YVR, LAX, YEA, DEN, MEX, CHI,
NYC, YHZ, or YYT as your Home City code.
• If you experience problems receiving the time calibration signal in your area, it
probably is best to switch between Standard Time and Daylight Saving Time
(summer time) manually.
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 setting screen appears.
3. Press D to cycle through the DST settings in the
sequence shown below.
Auto DST (
)
DST off (
)
DST on (
)
DST indicator
• If you change your Home City to one that is within the same transmitter area, the
current DST setting will be retained. If you change to a city that is outside your
current transmitter area, DST will be turned off automatically.
E-72
E-73
Transmitter
Japan
China
U.S.
Europe (U.K., Germany)
None
Covered City Codes
TPE, SEL, TYO
HKG, BJS
HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, NYC, YHZ, YYT
LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW
All other city codes
4. When the setting you want is selected, press A twice to exit the setting screen.
• The DST indicator appears to indicate that Daylight Saving Time is turned on.
Tide Site Name
Selecting a Tide Site Name
The tide site names you can select depend on your current Home City setting.
• Select the tide site name in the Timekeeping Mode.
• After configuring the settings for your Home City, press A once to display the tide
site name selection screen.
• Note that the tide sites you can select are those located in the same time zone as
your Home City. They are not necessarily located near your Home City.
To configure tide site settings
1. In the Timekeeping Mode, hold down A for about two
seconds until the city code starts to flash. This is the
setting screen.
• The watch will exit the setting screen automatically if
you do not perform any operation for about two or
three minutes.
E-74
E-75
2. Press A once to display the tide site name selection screen.
• The current tide site name will be on the display and
SET will flash.
3. Press D (forward) and B (back) to scroll through the
tide site names until the one you want is displayed.
• If the tide site name is longer than four characters, the
name will scroll from right to left on the display.
• A tide site that does not have any data assigned to it
displays the name “USER”.
4. When all of the settings are the way you want, press A
to exit the setting screen.
• The tide graph in the Timekeeping Mode shows
information for the site you select here.
• The tide site candidates are those with the same UTC
differential as the current Home City. If you cannot find
the site you want, you can select “USER”.
• Only “USER” sites may be available for some city codes.
• Setting an accurate high tide time will allow the watch to produce accurate tide
readings. Especially when “USER” is selected as the site, make sure that you input
an accurate high tide time (page E-38).
• Only a “USER” site can be selected while UTC is selected as the Home City.
E-76
E-77
(part you cannot see)
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Moon Phase Indicator
Module 3278
Moon Phase indicator
Module 3279
E-78
The Moon phase indicator of this watch indicates the
current phase of the Moon as shown below. It is based on
the view of the left side of the moon at meridian transit
from the northern hemisphere of the Earth. If the
appearance of the Moon phase indicator is reversed from
the actual Moon as viewed from your location, you can
use the procedure under “To reverse the displayed Moon
phase” (page E-40) to change the indicator.
Moon phase (part you can see)
Module
Moon
3278
Phase
Indicator
Module
3279
Moon Age
Moon Phase
28.7-29.8
1.0-2.7 2.8-4.6 4.7-6.4 6.5-8.3 8.4-10.1 10.2-12.0 12.1-13.8
0.0-0.9
New
First
Moon
Quarter
(Waxing)
E-79
Operation Guide 3278/3279
Moon phase (part you can see)
(part you cannot see)
Module
Moon
3278
Phase
Indicator
Module
3279
Moon Age
13.9-15.7 15.8-17.5 17.6-19.4 19.5-21.2 21.3-23.1 23.2-24.9 25.0-26.8 26.9-28.6
Moon Phase
Full
Moon
Tidal Movements
Tides are the periodic rise and fall of the water of oceans, seas, bays, and other
bodies of water caused mainly by the gravitational interactions between the Earth,
Moon and Sun. Tides rise and fall about every six hours. The Tide Graph of this watch
indicates tidal movement based on the Moon’s transit over a meridian and the lunitidal
interval. The Tide Graph calculates and graphically represents current tide conditions
in your currently selected site or USER site based on longitudes, lunar day length, and
lunitidal interval preset in watch memory, and on high tide times specified by you.
Last
Quarter
(Waning)
E-80
E-81
• The Tide Graph flashes as shown below to indicate the tide range.
Tide Graph
The Tide Graph graphically represents the current tide condition using one of three
patterns that represent spring tide, intermediate tide, and neap tide, as shown below.
Tide Name
Graph
Description
Spring Tide
Large difference between high tide
and low tide. Occurs a few days
before and after a New Moon and Full
Moon.
Intermediate Tide
Medium difference between high tide
and low tide.
Neap Tide
Small difference between high tide
and low tide. Occurs a few days
before and after the first quarter and
last quarter of a half moon.
Low tide
High tide
Low tide
• The segments on either end of the Tide Graph flash during low tide.
Lunitidal Interval
Theoretically, high tide is at the moon’s transit over the meridian and low tide is about
six hours later. Actual high tide occurs somewhat later, due to factors such as
viscosity, friction, and underwater topography. Both the time differential between the
moon’s transit over the meridian until high tide and the time differential between the
moon’s transit over the meridian until low tide are known as the “lunitidal interval”. Tide
data is calculated using the lunitidal intervals preset for each site.
E-82
E-83
Button Operation Tone
Power Saving Function
The button operation tone sounds any time you press one
of the watch’s buttons. You can turn the button operation
tone on or off as desired.
• Even if you turn off the button operation tone, alarms,
the Hourly Time Signal, and other beepers all operate
normally.
Mute indicator
To turn the button operation tone on and off
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Press C nine times until the current button operation
tone setting (
or
) appears.
3. Press D to toggle the setting between
(tone on)
and
(tone off).
4. Press A twice to exit the setting screen.
• The mute indicator is displayed in all modes when the
button operation tone is turned off.
When turned on, the Power Saving function enters a
sleep state automatically whenever the watch is left in an
area for a certain period where it is dark. The table below
shows how watch functions are affected by the Power
Saving function.
Power saving indicator
Display
Elapsed Time
in Dark
60 to 70 minutes Blank, with Power Saving
indicator flashing
6 or 7 days
Blank, with Power Saving
indicator not flashing
Operation
All functions enabled, except for the
display
Auto receive, beeper tone,
illumination, and display are disabled.
• Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
E-84
• The watch will not enter the sleep state between 6:00 AM and 9:59 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.
• Press any button.
• Angle the watch towards your face for reading (page E-57).
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Press C 11 times until the Power Saving on/off screen
appears.
3. Press D to toggle Power Saving on ( ) and off (
).
4. Press A twice to exit the setting screen.
• The Power Saving indicator is on the display in all
modes while Power Saving is turned on.
On/Off status
E-85
Radio-controlled Atomic Timekeeping Precautions
• 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 update the date and day of the week automatically 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.
E-86
E-87
• If you are in an area where proper time calibration signal reception is impossible, the
watch keeps the time with the precision noted in “Specifications”.
• 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, and DST
(summer time) settings (page E-68), and auto receive settings (page E-29).
• The Home City setting reverts to the initial default of TYO (Tokyo) whenever the
battery power level drops to Level 5 or when you have the rechargeable battery
replaced. If this happens, change the Home City to the setting you want (page E-13).
• When a China time zone is selected, the watch receives the time calibration signals
transmitted from China (Shangqiu City).
• When your Home City is LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW (which
can receive both the Anthorn and Mainflingen signals), the watch first tries to pick up
the signal it last successfully received. If that fails, it tries the other signal. For the first
receive after you select your Home City, the watch tries the nearest signal first
(Anthorn for LIS, LON, Mainflingen for MAD, PAR, ROM, BER, STO, ATH, and MOW).
Transmitters
The time calibration signal received by this watch depends on the currently selected
Home City code (page E-13).
• When a U.S. time zone is selected, the watch receives the time calibration signal
transmitted from the United States (Fort Collins).
• When a Japanese time zone is selected, the watch receives the time calibration
signal transmitted from Japan (Fukushima and Fukuoka/Saga).
• When a European time zone is selected, the watch receives the time calibration
signals transmitted from Germany (Mainflingen) and England (Anthorn).
• If you do not perform any operation for about two or three minutes while a setting
screen (with a flashing setting) is on the display, the watch will exit the setting screen
automatically.
• The watch will return to the Timekeeping Mode automatically if you do not perform
any operation for two or three minutes in the Tide/Moon Data Mode.
E-88
Auto Return
Scrolling
The B and D are used in various modes and setting screens to scroll through data
on the display. In most cases, holding down these buttons during a scroll operation
scrolls at high speed.
E-89
Operation Guide 3278/3279
Initial Screens
World Time
When you enter the World Time Mode or Alarm Mode, the data you were viewing
when you last exited the mode appears first.
• The seconds count of the World Time is synchronized with the seconds count of the
Timekeeping Mode.
Illumination Precautions
Timekeeping
• 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 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.
• The current time for all city codes in the Timekeeping Mode and World Time Mode is
calculated in accordance with the Coordinated Universal Time (UTC) for each city,
based on your Home City time setting.
• Illumination may be difficult to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.
Auto light switch precautions
• The auto light switch is turned off automatically whenever battery power is at Level 4
(CHG) (page E-61).
• Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light
switch to operate when it is not needed, which shortens battery life. If you want to
wear the watch on the inside of your wrist, turn off the auto light switch feature.
E-90
E-91
More than 15 degrees
too high
• Illumination may not turn on 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.
• Illumination turns off after a preset amount of time (1.5
or 3 seconds), 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 illumination does not turn on, 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, illumination may not turn on until about one second after
you turn the face of the watch towards you. This does not necessarily indicate
malfunction of the auto light switch.
• 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.
Specifications
Accuracy at normal temperature: ± 15 seconds a month (with no signal calibration)
Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Home City code (can be assigned one of 48 city codes); Standard Time /
Daylight Saving Time (summer time); Tide site data display
Time Calibration Signal Reception: Auto receive 6 times a day (5 times a day for the
Chinese calibration signal) (Remaining auto receives cancelled as soon as
one is successful); Manual receive
Receivable Time Calibration Signals: Mainflingen, Germany (Call Sign: DCF77,
Frequency: 77.5 kHz); Anthorn, England (Call Sign: MSF, Frequency: 60.0
kHz); Fort Collins, Colorado, the United States (Call Sign: WWVB, Frequency:
60.0 kHz); Fukushima, Japan (Call Sign: JJY, Frequency: 40.0 kHz); Fukuoka/
Saga, Japan (Call Sign: JJY, Frequency: 60.0 kHz); Shangqiu City, Henan
Province, China (Call Sign: BPC, Frequency: 68.5 kHz)
E-93
E-92
Tide/Moon Data:
Moon phase indicator for specific date; Tide level for specific date and time
Other: High tide time adjustment; Moon phase reversal
World Time: 48 cities (31 time zones) and Coordinated Universal Time
Other: Daylight Saving Time/Standard Time
Alarms: 5 daily alarms (with 1 snooze alarm); Hourly Time Signal
Stopwatch:
Measuring unit: 1/100 second
Measuring capacity: 59' 59.99''
Measuring modes: Elapsed time, split time, two finishes
Countdown Timer:
Number of timers: 2 (one set)
Setting unit: 5 seconds
Range: 99 minutes 55 seconds each timer
Countdown unit: 1 second
Number of repeats: 1 to 10
Illumination: LED (light-emitting diode); Auto Light Switch (Full Auto LED Light
operates only in the dark); Selectable illumination duration
Other: Power Saving; Button operation tone on/off
Power Supply: Solar panel and one rechargeable battery
Approximate battery operating time: 10 months (from full charge to Level 4) under
the following conditions:
• Watch not exposed to light
• Internal timekeeping
• Display on 18 hours per day, sleep state 6 hours per day
• 1 illumination operation(1.5 second) per day
• 10 seconds of alarm operation per day
• Approximately 4 minutes of signal reception per day
Frequent use of illumination runs down the battery. Particular care is required
when using the auto light switch.
E-94
E-95
City Code Table
City
Code
PPG
HNL
ANC
YVR
LAX
YEA
DEN
MEX
CHI
NYC
SCL
YHZ
YYT
City
Pago Pago
Honolulu
Anchorage
Vancouver
Los Angeles
Edmonton
Denver
Mexico City
Chicago
New York
Santiago
Halifax
St. Johns
UTC Offset/
GMT Differential
–11
–10
–9
–8
–7
–6
–5
–4
–3.5
City
UTC Offset/
City
Code
GMT Differential
RIO Rio De Janeiro
–3
FEN Fernando de Noronha
–2
–1
RAI
Praia
UTC
LIS
Lisbon
0
LON
London
MAD
Madrid
PAR
Paris
ROM
Rome
+1
BER
Berlin
STO
Stockholm
ATH
Athens
CAI
Cairo
+2
JRS
Jerusalem
City
Code
MOW
JED
THR
DXB
KBL
KHI
DEL
KTM
DAC
RGN
BKK
City
Moscow
Jeddah
Tehran
Dubai
Kabul
Karachi
Delhi
Kathmandu
Dhaka
Yangon
Bangkok
UTC Offset/
GMT Differential
+3
+3.5
+4
+4.5
+5
+5.5
+5.75
+6
+6.5
+7
City
Code
SIN
HKG
BJS
TPE
SEL
TYO
ADL
GUM
SYD
NOU
WLG
UTC Offset/
GMT Differential
City
Singapore
Hong Kong
Beijing
Taipei
Seoul
Tokyo
Adelaide
Guam
Sydney
Noumea
Wellington
+8
+9
+9.5
+10
+11
+12
• Based on data as of December 2010.
• The rules governing global times (UTC offset and GMT differential) and summer
time are determined by each individual country.
L
Tide Site Name List
City
Tide Site
Code
LIS NEWQUAY,GBR U.K.
LON ABERDEEN,GBR U.K.
KILLALA BAY,IRL IRELAND
PENICHE,POR PORTUGAL
CASCAIS,POR PORTUGAL
FUNCHAL,
MADEILA
MADEIRA
LAS PALMAS
GRAN CANARIA
CASABLANCA, MOROCCO
MAR
SAFI,MAR
MOROCCO
DAKAR,SEN
SENEGAL
USER
L-2
L-1
City
Code
MAD
PAR
ROM
BER
STO
Tide Site
BOUCAU,FRA
PORTUGALETE,
ESP
GIJON,ESP
MARSEILLE,FRA
PALERMO,ITA
USER
ATH CAPE TOWN,RSA
CAI DURBAN,RSA
JRS MOSSEL BAY,
RSA
USER
MOW TOLANARO,MAD
JED USER
FRANCE
SPAIN
SPAIN
FRANCE
ITALY
SOUTH AFRICA
SOUTH AFRICA
SOUTH AFRICA
MADAGASCAR
City
Tide Site
Code
THR USER
DXB LE PORT,
REUNION
REUNION
PORT LOUIS,
MAURITIUS
MRI
USER
KBL USER
KHI MALE,
MALDIVES
MALDIVES
USER
DEL GALLE, SRI
SRI LANKA
USER
KTM USER
DAC USER
RGN USER
City
Code
Tide Site
BKK PHUKET
THAILAND
TELUK DALAM,
NIAS
INDONESIA
PULAU TELO,
INA
INDONESIA
SIBERUT,INA
INDONESIA
NORTH PAGAI,
INA
INDONESIA
TANJUNG
PRIOK
INDONESIA
USER
L-3
Operation Guide 3278/3279
City
Code
SIN
HKG
BJS
TPE
Tide Site
BENOA,BALI
AMPENAN,
LOMBOK
COWARAMUP
FREMANTLE
CATANDUANES,
PHI
SIARGAO,PHI
USER
SEL ENOSHIMA
TYO SHIMODA
SHIKINEJIMA
OMAEZAKI
City
Code
INDONESIA
INDONESIA
Tide Site
IRAGO
WAKAYAMA
KANNOURA
HOSOSHIMA
NISHINOOMOTE
NAZE
NAHA
SENDAI
SOMA
KASHIMA
KAZUSAKATSUURA
USER
AUSTRALIA
AUSTRALIA
PHILIPPINES
PHILIPPINES
JAPAN
JAPAN
JAPAN
JAPAN
JAPAN
JAPAN
JAPAN
JAPAN
JAPAN
JAPAN
JAPAN
JAPAN
JAPAN
JAPAN
JAPAN
City
Tide Site
Code
ADL VICTOR
AUSTRALIA
HARBOR
USER
GUM NOOSA HEADS AUSTRALIA
SYD BUNDALL
AUSTRALIA
POINT DANGER AUSTRALIA
TWEED RIVER AUSTRALIA
BYRON BAY
AUSTRALIA
BALLINA
AUSTRALIA
SYDNEY
AUSTRALIA
ULLADULLA
AUSTRALIA
LORNE
AUSTRALIA
HOBART
AUSTRALIA
GUAM
GUAM
USER
City
Code
NOU NOUMEA
USER
Tide Site
NEW CALEDONIA
WLG SUVA,FIJ
RAGLAN,NZL
USER
PPG PAGO PAGO
FIJI ISLANDS
NEW ZEALAND
AMERICAN
SAMOA
USER
HNL HONOLULU
WAIALUA BAY,
OAHU
KAHULUI,MAUI
HILO BAY,
HAWAII
U.S.A.
U.S.A.
U.S.A.
U.S.A.
L-4
City
Code
L-5
Tide Site
NAWILIWILI,
KAUAI
PAPEETE,TAHITI
USER
ANC USER
YVR SAN FRANCISCO
LAX MONTEREY
PORT SAN LUIS
SANTA BARBARA
PORT HUENEME
SANTA MONICA
L.A.HARBOR
NEWPORT BAY
LA JOLLA
L-6
City
Code
U.S.A.
TAHITI
U.S.A.
U.S.A.
U.S.A.
U.S.A.
U.S.A.
U.S.A.
U.S.A.
U.S.A.
U.S.A.
YEA
DEN
MEX
CHI
NYC
Tide Site
ENSENADA,MEX
USER
USER
USER
MANZANILLO,
MEX
PUNTARENAS,
CRC
USER
ATLANTIC CITY
VIRGINIA BEACH
PORT CANAVERAL
MIAMI HARBOR
KINGSTON,JAM
MEXICO
MEXICO
COSTA RICA
U.S.A.
U.S.A.
U.S.A.
U.S.A.
JAMAICA
City
Code
Tide Site
BALBOA,PAN
PUERTO
LOPEZ,ECU
PUERTO
CHICAMA
USER
SCL SANTO DOMINGO
YHZ SAN JUAN,PUR
BRIDGETOWN
VALPARAISO,CHI
USER
PANAMA
EQUADOR
City
Code
YYT USER
RIO
PERU
Tide Site
RIO DE
JANEIRO
BRAZIL
SANTOS
BRAZIL
USER
DOMINICAN R.
PUERTO RICO
BARBADOS
CHILE
FEN F.D.NORONHA
BRAZIL
USER
RAI
PONTA
DELGADA
AZORES
USER
• For information about city names, see the City Code Table (page L).
L-7