USER’S GUIDE 2456
General Guide
Day Counter
Mode
• Press C to change from mode to mode. After you perform an operation in
any mode, pressing C returns to the Timekeeping Mode.
• In any mode, press L to illuminate the display for about two seconds.
World Time Mode
Alarm Mode
Timekeeping Mode
L
Press C.
Stopwatch Mode
Telememo Mode
Timekeeping
Use the Timekeeping Mode to set and view the current time and date. You can
also display the Last Signal and World Time screens.
Selecting Your Home City Code
You can select a city code for your Home City (the city where you normally use
the watch). This data can be changed any time you move to another
geographic area.
Last Signal
Timekeeping
Receive indicator
Day of week
World Time
Timekeeping Mode time
City code
Month – Day
Receive date
• See “City Code Table” at the back of this manual for a complete list of
available codes.
Hold down B.
Press D.
To select your Home City code
City code
1.In the Timekeeping Mode, hold down A until the
current Auto Receive On/Off setting starts to flash,
which indicates the setting screen.
Release
Hour : Minutes
Current time in the
selected city code
Receive time
2.Press C three times to move the flashing to the
City Code setting.
3.Use D (+) and B (–) to change it.
4.Press A to exit the setting screen.
PM indicator
Seconds
• The Last Signal screen shows the time and date of the last successful time
calibration signal reception.
• The World Time screen shows the data you were viewing when you last
exited the World Time Mode.
Time Calibration Signal Reception
This watch is designed to pick up a time calibration signal transmitted from
Mainflingen, Germany and update its time setting in accordance with the
signal. There are two different methods you can use to receive the signal: Auto
Receive and Manual Receive. With Auto Receive, the watch automatically
receives the calibration signal three times each day and makes appropriate
adjustments. With Manual Receive, you perform a specific button operation to
receive the calibration signal.
Current Time Setting
Normally, you do not need to do anything to set the current time as long as you
are within an area in West Europe where the watch can pick up the time
calibration signal. You can also set the current time manually when you are
outside the range of the signal.
• Before using the watch after purchasing it, use the procedure under
“Selecting Your Home City Code” (page E-11) to specify your home city, and
then use the procedure under “To perform manual time calibration signal
reception.”
• Note that after you set your Home City code, you must also turn on the
watch’s time calibration signal receiver if you want to enable auto time
calibration. See “About Auto Receive” (page E-16) for more information.
• See “Setting the Time and Date Manually” for information about manual
settings.
Note
• If you are using the time calibration signal to set the time for this watch, be
sure to correctly set your home city. Otherwise, there is the chance that the
watch will not set the correct time. See the “To select your Home City code”
for details.
• This watch automatically switches between DST and standard time while
BER is selected as the home city code. For any other home city code, you
must perform the procedure under “To set the current time and date
manually” to switch between DST and standard time.
• Time calibration reception is limited to specific geographic areas in West
Europe.
Setting the Time and Date Manually
The times displayed in the Timekeeping Mode and World Time Mode are
linked. Even if you plan to use the watch without enabling auto time calibration,
be sure to select a Home City code (the city code whose time and date you are
setting), before you set the time and date.
• The current time setting in accordance with the time calibration signal takes
priority over any time settings you make.
• The watch is designed to automatically update the date and day of the week
for the period January 1, 2000 to December 31, 2039. Setting of the date by
the time calibration signal cannot be performed starting from January 1,
2040.
To set the current time and date manually
12-hour format indicator 1.In the Timekeeping Mode, hold down A until the
• This watch can receive signals that differentiate between leap years and non-
current Auto Receive On/Off setting starts to flash,
which indicates the setting screen.
2.Press C to move the flashing in the sequence
shown below to select other settings.
City code
leap years.
• Auto Receive is turned on when the watch is shipped from the factory.
• See the information under “Time Calibration Signal Reception Precautions”
(page
E-42) if you experience problems with time calibration signal reception.
To perform manual time calibration signal reception
1.Place the watch on a stable surface to its top (12
o’clock side) is facing in the general direction of
Frankfurt, Germany.
Auto
Receive
12/24-Hour
Format
DST
City Code
Minutes
Seconds
Hour
• This puts the watch in the optimum position for
time calibration signal reception.
2.In the Timekeeping Mode, hold down D for about
two seconds, until the watch beeps.
Day
Month
Year
3. When the setting you want to change is flashing, use B and/or D to
change it as described below.
Setting
Auto Receive
DST
• At this time, the
indicator on the watch’s
display should scroll from left to right, which
indicates that signal reception has started.
• Time calibration signal reception takes from four
to 11 minutes. Take care that you do not move
the watch during this time.
Button Operations
Press D to toggle auto receive on and off.
Press D to toggle between Daylight Saving TIme (ON)
and standard time (OFF).
Current time
Receive indicator
• After signal reception is complete, the display of
the watch changes to the Last Signal screen,
which shows the new signal receive date and
time.
12/24-Hour format Press D to toggle between 12-hour (12H) and 24-hour
(24H) timekeeping.
Use D (+) and B (–) to change the setting.
City Code
Setting
Seconds
Button Operations
Press D to reset to 00.
Hour, Minutes,
Use D (+) and B (–) to change the setting.
Year, Month, Day
• Auto Receive setting is used for time calibration signal reception only. See
“About Auto Receive” for details.
• See “City Code Table” at the back of this manual for a complete list of
available codes.
• Daylight Saving Time (DST) advances the time setting by one hour from
Standard Time. Remember that no all countries or even local areas use
Daylight Saving Time.
4. Press A to exit the setting screen.
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USER’S GUIDE 2456
Day Counter
Telememo
Memory number
The Day Counter lets you count the number of days from the Timekeeping
Mode’s current date to a specific target date.
Telememo lets you store up to 20 records, each
containing name and telephone number data.
Records are automatically sorted based on the
characters of the name. You can recall records by
scrolling through them on the display.
• There are five Day Counter records, each of which can be set with its own
text and target date (year, month, day).
• All of the operations in this section are performed in the Day Counter Mode,
which you enter by pressing C (page E-4).
Name
• See “Character List” at the back of this manual for
details on how the watch sorts records.
• Your watch comes preset with three Telememo
records with the names “FAMILY,” “HOME,” and
“OFFICE,” without any phone numbers. You can
change or delete these records if you want.
• All of the operations in this section are performed in
the Telememo Mode, which you enter by pressing
C (page E-4).
To recall Day Counter records
Whenever you enter the Day Counter Mode, the Day Counter Number screen
appears for about two seconds, followed by the corresponding Target Date
screen.
Day Counter Number
Target Date
Day counter number
Target year
Telephone number
Target
Month – Day
To create a new Telememo record
1.In the Telememo Mode, press B or D until a
record showing the name “NEW” (indicating the
new record input screen) appears.
Text
Day counter
• If the message “FULL” appears on the display, it
means that memory is full. To store another
record, you will first have to delete some of the
records stored in memory.
• In the Day Counter Mode, use B and D to cycle through the Day Counter
number screens as shown below.
Press D.
DC1
DC2
DC3
DC4
DC5
2. Hold down A until the flashing cursor ( ) appears on the display, which
indicates the setting screen.
Press B.
3. Input a name.
• A Day Counter Number screen remains on the display for about two seconds,
after which it is replaced by the corresponding Target Date screen. Pressing
A while a Target Date screen is on the display switches to the corresponding
Day Counter Number screen for about two seconds.
• When inputting the name, use B and D to cycle through characters at
the current cursor location, and C to move the cursor to the right. See
“Inputting Text” on page E-39.
• You can input up to eight characters for the name.
• The day counter value has a plus sign (+) in front of it when the
corresponding target date comes after the current date, or a minus sign (–) in
front of it when the target date comes before the current date.
• Your watch comes preset with the following Day Counter text settings. You
can use these as they are or change them to something else, if you want.
DC1: 21C (21ST century)
-
4.After you input the name, press C as many times
as necessary to display the number input screen.
• You can input up to eight characters for the
name. When the cursor is located at the eighth
space of the name, moving the cursor to the right
causes it to jump to the first digit of the number.
When the cursor is at the 12th digit of the
number, moving it to the right (by pressing C)
causes it to jump to the first character in the
name.
DC2: PAYDAY
DC3: BIRTHDAY
To make Day Counter record settings
1.In the Day Counter Mode, use B and D to scroll
through the Day Counter Number screens until the
one you want is on the display.
2.Hold down A until the flashing cursor appears on
the display, which indicates the setting screen.
• Holding down L for about two seconds at this
time clears the text (if there is any already input)
and sets the current Timekeeping Mode date as
5. Input a telephone number.
• Use B and D to change the character (hyphen, number, or space) at the
cursor position. The character changes in the following sequence.
Press D.
–
(space)
Cursor
0 to 9
the target date.
Press B.
3.Press C to move the flashing in the sequence
shown below to select other settings.
6. When the character you want is at the cursor position, press C to move the
cursor to the right.
Text
Year
Month
Day
7. Repeat steps 5 and 6 until you complete number input.
• You can input up to 12 digits for the number.
• The number initially contains all hyphens. You can leave the hyphens or
replace them with numbers or spaces.
• There are eight spaces in the text, so you have to press C eight times to
move to the Year setting.
• When the Year setting is selected, the cursor changes for a four-digit target
year. Though the setting screen shows four digits, other screens show only
the last (rightmost) two digits.
8. Press A to store your data and return to the Telememo record screen
(without the cursor).
• When you press A, the message “SORT” appears on the display for a few
seconds. After the sort operation is complete, the watch returns to the
Telememo record screen (without the cursor).
4. When the setting you want to change is selected, use B and D to change it.
• Selecting the text causes the text input cursor to appear.
• When inputting text, use B and D to cycle through characters at the
current cursor location, and C to move the cursor to the right. See
“Inputting Text” on page E-39.
To recall Telememo records
In the Telememo Mode, use D (+) and B (–) to scroll through Telememo
records on the display.
• Only the memory number and name of each Telememo record appear on the
display as you scroll through Telememo records. If you leave the memory
number/name screen on the display for about two seconds, it changes to the
phone number screen.
• While the year, month, or day setting is flashing, use D (+) and B (–) to
change the setting.
• You can set a target date in the range of January 1, 1940 to December 31, 2039.
5. Press A to exit the setting screen.
• Pressing A while the phone number screen is on the display switches to the
Note
memory number/name screen for about two seconds.
• Use the above procedure to edit Day Counter records, too.
To edit a Telememo record
1. In the Telememo Mode, scroll through the records and display the one you
want to edit.
World Time
2. Hold down A until the flashing cursor appears on the display.
3. Use C to move the flashing to the character you want to change.
4. Use B and D to change the character.
Timekeeping Mode time World Time shows the current time in 28 cities (29
time zones) around the world.
City code
• For full information on city codes, see the “City
Code Table” at the back of this manual.
• All of the operations in this section are performed in
the World Time Mode, which you enter by pressing
C (page E-4).
5. After making the changes that you want, press A to store them and return
to the Telememo record screen.
To delete a Telememo record
1. In the Telememo Mode, scroll through the records and display the one you
want to delete.
2. Hold down A until the flashing cursor appears on the display.
3. Hold down L until the message “CLEAR” appears on the display.
• At this time the cursor appears on the display, ready for input.
4. Input data or press A to return to the Telememo record screen.
To view the time in another city code
While in the World Time Mode, press D to scroll
forward through the city codes (time zones) and B
to scroll back.
Current time in the
selected city code
• If the current time shown for a city is wrong, check
your Timekeeping Mode time and Home City
settings and make the necessary changes.
To toggle a city code time between standard time and Daylight Saving Time
1.In the World Time Mode, use B and D to display
the city code (time zone) whose standard time/
Daylight Saving Time setting you want to change.
2.Hold down A for about two seconds to toggle
Daylight Saving Time (DST displayed) and
standard time (DST not displayed).
• The “DST” indicator is on the display whenever
you display a city code for which Daylight Saving
Time is turned on.
• Note that the DST/Standard Time setting affects only the currently
displayed city code. Other city codes are not affected.
• Daylight Saving Time (DST) advances the time setting by one hour from
Standard Time. Remember that the not all countries or even local areas
use Daylight Saving Time.
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USER’S GUIDE 2456
Stopwatch
Time Calibration Signal Reception Precautions
1/100 second The stopwatch lets you measure elapsed time, split
• This watch is able to receive the time calibration
times, and two finishes.
signal transmitted from Mainflingen, Germany
(located 25 kilometers southeast of Frankfurt).
Signal reception is possible within the area
represented by a circle with a radius of about 800
kilometers.
• The display range of the stopwatch is 23 hours, 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.
• All of the operations in this section are performed in
the Stopwatch Mode, which you enter by pressing
C (page E-4).
• Even when the watch is within the reception range,
signal reception is impossible if the signal is
blocked by mountains or other geological
formations between the watch and signal source.
Hours
Seconds
Minutes
Frankfurt
• Signal reception is affected by weather, atmospheric conditions, and
seasonal changes.
• The time calibration signal is bounced 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.
• This watch is designed to receive the signal transmitted from Mainflingen.
This means that reception is best when the antenna built into the 12 o’clock
edge of the watch is facing towards Mainflingen. Note, however, that moving
the watch while the time calibration signal receive operation is taking place
will make stable reception impossible.
To measure times with the stopwatch
Elapsed Time
D
L
Stop
LA
Clear
D
Start
LD
Stop
LD
Re-start
Split Time
A
L
LD
Stop
LA
Clear
D
Start
LA
Split
Split release
Two Finishes
D
L
Stop
Second runner
finishes.
LA
Split release
Display time of
second runner.
LA
Clear
D
Start
LA
Split
First runner
finishes.
Display
time of first
runner.
• Think of the watch as acting like a TV or radio when it is receiving the
calibration signal. When receiving indoors, move to a location as near as
possible to a window. Proper signal reception can be difficult or even
impossible under the conditions listed below.
Near TVs, refrigerators, computers, or other household appliances
Far away from broadcasting stations among ferro-concrete structures or near
mountains
Underground, in tunnels or in ferro-concrete buildings
Near high-tension wires, neon signs, or radio stations with interfering
frequencies
Reference
Near railroads, highways or airports
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.
In trains or cars
• Radio interference can make signal reception impossible.
• Strong electrostatic charge can result in the wrong time being set.
• The daily alarm and hourly time signal do not operate during signal reception.
• If you are in an area where proper time calibration signal reception is
impossible, the watch keeps time with the precision noted in “Specifications.”
Auto Return Features
• If you leave a screen with flashing digits or a cursor on the display for two or
three minutes without performing any operation, the watch automatically
saves anything you have input up to that point and exits the setting screen.
• If you leave the watch in Alarm, Day Counter, or Telememo Mode for about
two minutes without performing any operation, it automatically changes to the
Timekeeping Mode.
World Time
• The current time in all World Time Mode cities is calculated in accordance
with the Greenwich Mean Time (GMT) differential for each city, based on the
current Home City time setting in the Timekeeping Mode.
• GMT differential is calculated by this watch based on Universal Time
Coordinated (UTC) data.
Data and Setting Scrolling
The B and D buttons 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 through the data at high speed.
Backlight Precautions
• The electro-luminescent panel that provides illumination loses power after very
long use.
• The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.
Initial Screens
When you enter the Alarm, Day Counter, World Time or Telememo Mode, the
data you were viewing when you last exited the mode appears first.
• The watch may emit an audible sound whenever the display is illuminated.
This is due to vibration of the EL panel used for illumination, and does not
indicate malfunction.
• The backlight automatically turns off whenever an alarm sounds.
Inputting Text
The following describes how to input text in the Alarm, Day Counter, and
Telememo Modes.
To input characters
1.When the cursor is on the display, use B and D
to cycle through the available letters, numbers and
symbols, in the sequence shown below.
Press D.
Press B.
(space)
A
to
Z
0
to
9
Cursor
.
:
/
–
2. When the character you want is at the cursor position, press C to move the
cursor to the right.
3. Repeat steps 1 and 2 to input the rest of the characters you want.
Display Text
Though you can input up to eight characters for Alarm text, Day Counter text
and the Telememo name, only six characters can appear on the display at one
time. Because of this, display screens switch alternately between the first six
characters and the remaining two characters.
Timekeeping
• Pressing D while setting the current time in the Timekeeping Mode resets
the seconds count to zero. Pressing D while seconds count is in the range
of 30 to 59 resets the seconds to 00 and adds 1 to the minutes. In the range
of 00 to 29, the minutes count is unchanged.
• The day of the week is automatically displayed in accordance with the date
(year, month, and day) settings.
• The year can be set in the range of 2000 to 2039.
• The watch’s built-in full automatic calendar automatically makes allowances
for different month lengths and leap years. Once you set the date, there
should be no reason to change it except after you have the watch’s battery
replaced.
12-hour/24-hour Timekeeping Formats
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode
is also applied in all other modes.
• With the 12-hour format, the P (PM) indicator appears to the left of the hour
digits for times in the range of noon to 11:59 p.m. and the 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,
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with 24 indicator.
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