Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.
• 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.
Warning!
E-1
Keep the watch exposed to bright light
Bright Light
l
l
l
l
l
l
l
Solar panel
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-4
The electricity generated by the solar panel of the watch is
stored by a rechargeable battery. Leaving or using the
l
l
l
l
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.
Contents
General Guide ....................................................................................................... E-10
• 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.Battery discharges in the dark.
Solar panel
(Converts light to
electrical power.)
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.
Procedure Lookup
The following is a handy reference list of all the operational procedures contained in
this manual.
Bright Light
Electrical
energy
All
LEVEL 1
functions
LEVEL 2
enabled
LEVEL 3
Charge
LEVEL 4
Rechargeable battery
Module 3278Module 3279
Dis-
charge
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Some or all
functions
disabled
E-3
E-5
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 test the alarm ................................................................................................... E-46
To turn an alarm on and off.................................................................................. E-47
To turn the Hourly Time Signal on and off ..........................................................E-48
To measure times with the stopwatch ................................................................ E-50
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
To change the Daylight Saving Time (summer time) setting ............................ E-73
To configure tide site settings ............................................................................. E-75
To turn the button operation tone on and off .....................................................E-84
To recover from the sleep state ........................................................................... E-86
To turn Power Saving on and off ......................................................................... E-86
E-9
Operation Guide 3278/3279
General Guide
• 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.
Timekeeping Mode
C
Tide/Moon Data Mode
▲
C
▲
E-10
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.
E-14
World Time Mode
▲
Countdown Timer ModeStopwatch Mode
C
▲
C
• 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
City code
Hour : Minutes
PM indicator
• 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).
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
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, PA R, RO M, BER, STO : Madrid, Paris,
ATH: Athens
MOW: Moscow
Seconds
HKG, BJS, TPE : Hong Kong, Beijing, Taipei
SEL, TYO : Seoul, Tokyo
HNL: Honolulu
ANC:Anchorage
C
Rome, Berlin, Stockholm
Alarm Mode
▲
▲
C
E-11
E-13
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.
12 o’clock
or
• Make sure the watch is facing the right way.
E-16
• 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
* 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
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
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
Near
Anthorn
Inside a
vehicle
household
appliances,
office
equipment,
or a mobile
phone
Near a
construction
site, airport,
or other
sources of
electrical
noise
Mainflingen
Inside or
among
buildings
• 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.
Approximate Reception Ranges
U.K. and German Signals
1,500 kilometers
500 kilometers
The Anthorn signal
is receivable within
this area.
Near hightension power
lines
North American Signal
Among or
behind
mountains
E-17
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
E-19
Operation Guide 3278/3279
Japan Signals
500 kilometers
Fukuoka/Saga
1,000 kilometers
Signals are receivable in the Taiwan area when reception conditions are good.
1,500 kilometers
500 kilometers
Chengdu
E-20
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.
Your Home City
Standard Time
LIS
Daylight Saving Time
LON
Standard Time
MAD
Daylight Saving Time
PAR
ROM
BER
STO
Standard Time
ATH
Daylight Saving Time
Standard Time
MOW
Daylight Saving Time
E-22
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.
E-24
Shangqiu
12 3456
1:00 am
2:00 am
2:00 am
3:00 am
3:00 am
4:00 am
4:00 am
5:00 am
500 kilometers
Fukushima
1,000 kilometers
China Signal
Auto Receive Start Times
2:00 am
3:00 am
3:00 am
4:00 am
3:00 am
4:00 am
4:00 am
5:00 am
4:00 am
5:00 am
5:00 am
Midnight*
5:00 am
Midnight*
Midnight*
1:00 am*
4:00 am
5:00 am
5:00 am
Midnight*
Midnight*
1:00 am*
1:00 am*
2:00 am*
5:00 am
Midnight*
Midnight*
1:00 am*
1:00 am*
2:00 am*
2:00 am*
3:00 am*
Changchun
Beijing
Shanghai
Hong Kong
Midnight*
1:00 am*
1:00 am*
2:00 am*
2:00 am*
3:00 am*
3:00 am*
4:00 am*
• 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.
E-21
Your Home City
HKG
Standard Time and
BJS
Daylight Saving Time
TPE
Standard Time
SEL
TYO
HNL
Standard Time and
ANC
Daylight Saving Time
YVR
LAX
YEA
DEN
MEX
CHI
NYC
YHZ
YYT
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
• 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.
12 3456
1:00 am
Midnight
Midnight
Auto Receive Start Times
2:00 am
3:00 am
1:00 am
2:00 am
1:00 am
2:00 am
4:00 am
3:00 am
3:00 am
5:00 am
4:00 am
4:00 am
5:00 am
5:00 am
*Next day
E-23
StrongWeak
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
Receive failed
If there was a previously
successful reception
E-28
• 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 perform manual receive
Receiving
1. Enter the Timekeeping Mode (page E-10).
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
• If the receive operation is successful, the reception
Receive successful
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.
To turn auto receive on and off
On/Off status
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
3. Press D to toggle auto receive on (
4. Press A to exit the setting screen.
• For information about city codes that support signal
receive, see “To specify your Home City” (page E-13).
seven minutes. Take care that you do not perform
any button operations or move the watch during this
time.
date and time appear on the display, along with the
GET indicator.
currently selected Home City is one that does not
support time calibration reception.
) and off ().
E-27
E-29
Operation Guide 3278/3279
To check the latest signal reception results
E-30
Auto receive is
turned on, but
the RCVD
indicator does
not appear on
the display.
E-32
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.
• You changed the time setting
manually.
•
The DST setting was changed
manually in the World Time Mode.
• You pressed a button while
signal receive was in progress.
•
Even if receive is successful, the
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.
What you should doProblemProbable Cause
• 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 (page E-16).
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).
E-34
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Cannot perform
manual receive.
Time setting
is incorrect
following
signal
reception.
• For further information, see “Important!” (page E-16) and “Radio-controlled Atomic
Timekeeping Precautions” (page E-87).
Tide Data
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.
• The watch is not in the
Timekeeping Mode.
• Your current Home City is not
one of the following: LIS, LON,
MAD, PAR , ROM, BER, STO,
ATH , MOW, HKG, BJS, TPE,
SEL, TYO, HNL, ANC, YVR,
LAX, YEA, DEN, MEX, CHI,
NYC, YHZ, or YYT
• A countdown timer operation is
in progress.
• 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 doProblemProbable Cause
• Enter the Timekeeping Mode
and try again.
•
Select LIS, LON, MAD, PAR ,
ROM, BER, STO, ATH, MOW,
HKG, BJS, TPE, SEL, TYO,
HNL, ANC, YVR, LAX, YEA,
DEN, MEX, CHI, NYC, YHZ, or
YYT as your Home City (page
E-13).
• Enter the Countdown Timer
Mode and stop the countdown.
(page E-51)
What you should doProblemProbable Cause
• Change the DST setting to
Auto DST (page E-73).
• Select the correct Home City
code (page E-13).
E-31
E-33
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 ScreenMoon Data Screen
Current tide level
E-36
To adjust the high tide time
Hour
Minute
E-38
Current tide range
A
▲
▲
Time
Month – Day
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.
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
(summer time) setting of the Timekeeping Mode.
Moon age
Moon phase
Month – Day
• 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.
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
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