Casio 2496 User manual

USER’S GUIDE 2496
1
About This Manual
•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.
General Guide
•Press Cto change from mode to mode.
•In any mode, press Ato illuminate the display.
Timekeeping Mode Data Bank Mode
▲
Press C.
▲
Mail Mode
Alarm ModeUser Information Mode
World Time Mode
Stopwatch Mode
▲ ▲
▲
▲
▲
Timekeeping
Use the Timekeeping Mode to set and view the
current time and date.You can also select the
Timekeeping Mode display format (time and date
or time and world time).
•In the Timekeeping Mode, animated figures
appear whenever you press Ato turn on the
backlight, and whenever the minutes reach 00.
•You can also use the Timekeeping Mode to
exchange user information by infrared. See
“Data Communication” for more information.
Day of week
Animated figure
Year Month –Day
PM indicator
Hour : Minutes Seconds
Read This Before You Set the Time and Date !
The times displayed in the Timekeeping Mode and World Time Mode are
linked. Because of this, make sure you select a city code for your Home City
(the city where you normally use the watch) before you set the time and date.
To set the time and date
1. In the Timekeeping Mode, hold down Auntil
the seconds start to flash, which indicates the
setting screen.
2. Press Cto move the flashing in the sequence
shown below to select other settings.
3. When the setting you want to change is flashing, use Dand Bto change
it as described below.
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DST
12/24-Hour
Format
Seconds City code
Month Minutes
Day Hour
Year
Setting Screen Button Operations
Seconds
12/24-Hour Format
DST
City Code
Hour, Minutes,
Year, Month, Day
Press Dto reset to 00.
Press Dto toggle between 12-hour (12H)
and 24-hour (24H) timekeeping.
Press Dto toggle between Daylight Saving
Time (ON) and Standard Time (OFF).
Use D(east) and B(west) to change the
setting.
•For full information on city codes, see
the “City Code Table.”
Use D(+) and B(–) to change the setting.
4. Press Ato exit the setting screen.
•See “Daylight Saving Time (DST)”below for details about DST setting.
•The 12-hour/24-hour timekeeping format you select in the Timekeeping
Mode is applied in all modes.
•The day of the week is automatically displayed in accordance with the date
(year, month, and day) settings.
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.
To toggle the Timekeeping Mode time between DST and Standard Time
1. In the Timekeeping Mode, hold down Auntil
the seconds start to flash, which indicates the
setting screen.
2. Press Ctwice to display the DST setting
screen.
3. Press Dto toggle between Daylight Saving
Time (ON displayed) and Standard Time
(OFF displayed).
4. Press Ato exit the setting screen.
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•The DST indicator appears on the display to indicate that Daylight Saving
Time is turned on.
To select the Timekeeping Mode screen format
Each press of Din the Timekeeping Mode toggles the display between the
Time–Date screen and the Time–World Time screen.
•The world time that appears is the one that was on the display when you
last exited the World Time Mode. See “World Time”for more information.
Time –Date Time –World Time
▲
Press D.
▲
World time

USER’S GUIDE 2496
2
Data Bank
The Data Bank Mode lets you store up to 60
records, each containing a name, telephone
number, e-mail address, and date of birth.
Records are automatically sorted based on the
characters of the name.You can recall records by
scrolling through them on the display.
•Instead of an e-mail address, you can use Data
Bank Mode memory to store addresses, mobile
phone numbers, URLs, etc.
•See “Sort Table”for details on how the
watch sorts records.
•All of the operations in this section are
performed in the Data Bank Mode, which you
enter by pressing C.
•See “Data Communication”for information
about exchanging Data Bank records.
Remaining memory
Telephone number
e-mail address
Date of birth
Name
To create a new Data Bank record
1. In the Data Bank Mode, use Band Dto
cycle through the record screens until the new
data screen appears.
•The new data screen is the one that is blank
(contains no name and telephone number).
•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.
2. Hold down Auntil the flashing cursor ( )
appears in the text area of the display.
•Steps 3 through 9 describe how to input a
name, telephone number, e-mail address,
and date of birth into the record. If you want
to exit the setting screen and store the data
you have input up to any point during steps
3 through 9, press Atwice.
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Text area
Number area
New Data Screen
3. Input the name.
•You can input up to eight characters for the name.
•Use D(+) and B(–) to cycle through characters at the cursor position,
and then press Cto move the cursor to the right. See “Inputting Text”for
more information.
•Pressing Cwhile the cursor is located at the eighth character moves
the cursor to the first digit of the number area.
4. After you input the name, press Cas many times as necessary to move
the cursor to the number area (if it is not already there).
5. Input the telephone number.
•Use D(+) and B(–) to cycle through numbers at the cursor position in
the sequence shown below, and then press Cto move the cursor to the
right.
•You can input up to 12 digits for the telephone number. Pressing C
while the cursor is located at the 12th digit displays the date of birth
input screen.
Press D.
Press B.
x 0 to 9(space)
6. After inputting the phone number, press Cas
many times as necessary to display the date
of birth input screen.
7. Input the date of birth.
•Use D(+) and B(–) to change the setting
at the current cursor position, and then
press Cto move the cursor to the right.
•Input four digits (2 + 2) for the year.
8. While the cursor is located at the day setting
of the date of birth, press Cto move the
cursor to the text area.
9. Input the e-mail address.
•You can input up to 32 characters for the
e-mail address.
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Year
Date (Month –Day)
•Use D(+) and B(–) to cycle through characters at the cursor position,
and then press Cto move the cursor to the right. See “Inputting Text”for
more information.
10. After the e-mail address is the way you want, press Ato store the
record.
•When you press Ato store data, the message SORT appears on the
display for a while, indicating that data is being sorted. After the sort
operation is complete, the cursor appears in the text area, ready for
input of a new Data Bank record.
•Depending on how many records you have in memory, the sort
operation can take up to 20 seconds.
11. Input more data (starting from step 3) or press Aagain to return to the
Data Bank record name and telephone number screen (without the
cursor).
•The name can show six characters at a time, so longer text scrolls
continuously from right to left. The last character is indicated by the symbol
Hafter it.
To recall Data Bank records
In the Data Bank Mode, use D(+) and B(–) to scroll through Data Bank
record screens on the display.
•Each Data Bank record has a Name/Telephone Number screen, and an
E-mail Address/Date of Birth screen. The Name/Telephone Number screen
always appears first.
▲
▲ ▲
▲ ▲
▲
Data type icons
Press D. Press B.
▲
▲
Name/Telephone
Number Screen
E-mail Address/
Date of Birth Screen
New Data
Screen
▲
•Note that the E-mail Address/Date of Birth screen does not appear if it does
not contain at least e-mail address or date of birth data. In this case,
pressing Dscrolls to the next Data Bank record.
•A data type icon indicates the type of data that is displayed to the left of it:
(Name), (Telephone number), (e-mail address), (date of birth)
•Pressing Breturns to the previous record’s Name/Telephone Number
screen, not the previous record’s E-mail Address/Date of Birth screen.
•The e-mail address can show six characters at a time. Longer text is
displayed by alternating 6-character blocks at regular intervals. The last
character of the address is indicated by the symbol Hafter it.
•Pressing Dwhile the last Data Bank record (Name/Telephone Number
screen or E-mail Address/Date of Birth screen) is on the display or Bwhile
the first record (Name/Telephone Number screen) is on the display displays
the new data screen.
To edit a Data Bank record
1. In the Data Bank Mode, use D(+) and B(–) to scroll through the record
screens and display the one you want to edit.
2. Hold down Auntil the flashing cursor appears on the display.
3. Use Cto move the cursor to the character or digits you want to change.
4. Use D(+) and B(–) to change the character.
5. After making the changes that you want, press Ato store the record.
•SORT appears on the display indicating that data is being sorted. After
that, the record’s Name/Telephone Number screen appears.
To delete a Data Bank record
1. In the Data Bank Mode, use D(+) and B(–) to scroll through the record
screens and display the one you want to delete.
•Note that performing the next two steps deletes the entire record,
regardless of whether you start from the Name/Telephone Number
screen or the E-mail Address/Date of Birth screen. You cannot delete
only Name/Telephone Number screen or E-mail Address/Date of Birth
screen data.
2. Hold down Auntil the flashing cursor appears on the display.
3. Press Dand Bat the same time to delete the record.
•The message CLEAR appears to indicate that the record is being
deleted. After the record is deleted, the cursor appears on the display,
ready for input.
4. Input data or press Ato return to the new data screen.
•Pressing Acauses the SORT to appear on the display indicating that
data is being sorted. After that, the new data screen appears.

USER’S GUIDE 2496
3
Mail
The Mail Mode lets you input up to four mail
messages of up to 30 characters each. Input mail
text can be sent to and received from another
watch by IR.
•Mail messages are identified by page numbers
Px1 through Px4.
•Up to six characters of mail text can be
displayed at a time, so longer text is displayed
by alternating 6-character blocks at regular
intervals. The last character of mail text is
indicated by the symbol Hafter it.
•All of the operations in this section are
performed in the Mail Mode, which you enter
by pressing C.
•See “Data Communication”for information
about exchanging mail messages.
Mail text
Page number
To input mail text
1. In the Mail Mode, use Dand Bto select the
mail message page where you want to input
text.
•Note that page Px4 is also used to store
received mail text. This means that if you
receive a mail message while you have text
stored on page Px4, the existing text will
be overwritten by the newly received
message.
2. Hold down Auntil the flashing cursor ( ) appears on the display.
3. Input the text you want.
•Use D(+) and B(–) to cycle through characters at the cursor position,
and then press Cto move the cursor to the right. See “Inputting Text”for
more information.
4. After inputting your text, press Ato store it.
Press D.
Press B.
Px2 Px3
Px1 Px4
To edit mail message text
1. In the Mail Mode, use D(+) and B(–) to scroll through the messages
and display the one you want to edit.
2. Hold down Auntil the flashing cursor appears on the display.
3. Use Cto move the cursor to the character you want to change.
4. Use D(+) and B(–) to change the character.
5. After making the changes that you want, press Ato store them and return
to the mail message screen.
To delete a mail message
1. In the Mail Mode, use D(+) and B(–) to scroll through the messages
and display the one you want to delete.
2. Hold down Auntil the flashing cursor appears on the display.
3. Press Dand Bat the same time to delete the message.
•CLEAR appears to indicate that the message is being deleted. After
the message is deleted, the cursor appears on the display, ready for
input.
4. Input text, or press Ato return to the mail message screen.
World Time
World Time shows the current time in 40 cities
(27 time zones) around the world.
•If the current time shown for a city is wrong,
check your Timekeeping Mode time and Home
City code settings and make the necessary
changes.
•The upper part of the display alternates
between the city code and the day of the week.
•All of the operations in this section are
performed in the World Time Mode, which you
enter by pressing C.
To view the time in another city code
In the World Time Mode, press Dto scroll
through city codes (time zones) to the east or B
to scroll to the west.
•For full information about city codes, see the “City
Code Table.”
Current time in the zone
of the selected city code
Day of
week
Timekeeping Mode time
(Home time)
City code
To toggle a city code time between Standard Time and Daylight
Saving Time
1. In the World Time Mode, use Dand Bto
display the city code whose Standard Time/
Daylight Saving Time setting you want to
change.
2. Hold down Afor 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.
Stopwatch
The stopwatch lets you measure elapsed time,
split times, and two finishes.
•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.
•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.
Seconds
1/100 second
Minutes
Hours
To measure times with the stopwatch
First runner
finishes.
Display time
of first runner.
Display time of
second runner.
Elapsed Time
DD D D B
Start Stop Re-start Stop Clear
Split Time
DB B D B
Start Split Split release Stop Clear
(SPL displayed)
Two Finishes
DB D B B
Start Split Stop Split release Clear
Second runner
finishes.
J J J J
J J J J
J J J J
Alarms
You can set up to five independent multi-function
alarms with hour, minutes, month, day, and day of
the week. When an alarm is turned on, the alarm
tone sounds when the alarm time is reached.
You can also turn on an Hourly Time Signal that
causes the watch to beep twice every hour on the
hour.
•There are five alarm screens numbered1
through 5. The hourly time signal screen is
indicated by SIG.
•Alarm settings (and Hourly Time Signal
settings) are available in the Alarm Mode,
which you enter by pressing C.
Alarm number
Day of
week
Alarm date
(Month –Day)
Alarm time
(Hour : Minutes)
Alarm Types
The alarm type is determined by the settings you make, as described below.
•Daily alarm
Set the hour and minutes for the alarm time. This type of setting causes the
alarm to sound everyday at the time you set.
•Date alarm
Set the month, day, hour and minutes for the alarm time. This type of setting
causes the alarm to sound at the specific time, on the specific date you set.
•1-Month alarm
Set the month, hour and minutes for the alarm time. This type of setting
causes the alarm to sound everyday at the time you set, only during the
month you set.

USER’S GUIDE 2496
4
•Monthly alarm
Set the day, hour and minutes for the alarm time. This type of setting causes
the alarm to sound every month at the time you set, on the day you set.
•Weekly alarm
Set the day of the week, hour and minutes for the alarm time. This type of
setting causes the alarm to sound every week at the time you set, on the day
of the week you set.
Note
•In addition to the alarm types described above, you can also set up alarms
with the following two configurations.
Hour, minutes, month, day of the week
This type of alarm sounds at the specified time whenever the specified day
of the week occurs during the specified month.
Hour, minutes, day, day of the week
This type of alarm sounds at the specified time each time the specified day
falls on the specified day of the week.
•Alarms sound in accordance with the time (and year, month, day, day of the
week) kept by the Timekeeping Mode. Because of this, the alarm will not
sound if your settings specify a condition that does not exist. For example,
June 30, 2002 falls on a Sunday. If you set an alarm for Tuesday, June 30, it
will not sound during 2002.
To set an alarm time
1. In the Alarm Mode, use Dto scroll through
the alarm screens until the one whose time
you want to set is displayed.
2. After you select an alarm, hold down Auntil
the hour setting of the alarm time starts to
flash, which indicates the setting screen.
•This operation automatically turns on the
alarm.
3. Press Cto move the flashing in the sequence
shown below to select other settings.
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SIG
x1 x2 x3
x5 x4
Alarm on indicator
Hour Day of week
Minutes Month Day
4. While a setting is flashing, use D(+) and B(–) to change it.
•To set an alarm that does not include a month and/or day, set xx for
each setting.
•To set an alarm that does not include the day of the week, set --- for
the setting.
•When setting the alarm time using the 12-hour format, take care to set
the time correctly as a.m. (Aindicator) or p.m. (Pindicator).
5. Press Ato exit the setting screen.
Alarm Operation
The alarm sounds at the preset time for about 20 seconds, or until you stop it
by pressing any button.
•An alarm does not sound if its preset time is reached while an IR data
communication operation is in progress.
To test the alarm
In the Alarm Mode, hold down Dto sound the alarm.
To turn an alarm and the Hourly Time Signal on and off
1. In the Alarm Mode, press Dto select an alarm or the Hourly Time Signal.
2. When the alarm or the Hourly Time Signal you want to is selected, press
Bto turn it on and off.
Indicates alarm is on.
Indicates Hourly Time Signal is on.
Note
•The on ( displayed)/off ( not displayed) status of an alarm is
indicated on the corresponding alarm screen (1through 5). The Hourly
Time Signal on ( displayed)/off ( not displayed) status is indicated on
all alarm screens.
•When the Hourly Time Signal and an alarm are both turned on, the
indicators appear as .
•The alarm on indicator and the Hourly Time Signal on indicator are shown
on the display in all modes while these functions are turned on.
•If any alarm is on, the alarm on indicator is shown on the display in all
modes.
User Information
User information identifies the watch as yours. It
also provides a record of your name, phone
numbers, e-mail address, and the date of birth
when such information is required.
•All of the operations in this section are
performed in the User Information Mode, which
you enter by pressing C.
•See “Data Communication”for information
about exchanging user information.
To input user information
1. In the User Information Mode, hold down Auntil the flashing cursor ( )
appears in the text area of the display. This is the input screen.
2. Input your user information by performing the procedure starting from step
3 under “To create a new Data Bank record”.
•Pressing Aat any time during user information input exits the input screen
and displays the current user information.
To recall user information
Pressing Din the User Information Mode switches between the Name/
Telephone Number screen and the E-mail Address/Date of Birth screen. Note
that the E-mail Address/Date of Birth screen does not appear unless it
contains at least e-mail address or date of birth data.
Name/Telephone
Number Screen
E-mail Address/
Date of Birth Screen
▲
Press D.
▲
Data type icons
Press D or B.
To edit user infomation
1. In the User Information Mode, hold down Auntil the flashing cursor
appears on the display.
2. Use Cto move the cursor to the character or digits you want to change.
3. Use D(+) and B(–) to change the character.
4. After making the changes that you want, press Ato store the record.
To delete user information
1. In the User Information Mode, hold down Auntil the flashing cursor
appears on the display.
2. Press Dand Bat the same time to delete the information.
•The message CLEAR appears to indicate that the information is being
deleted. After that, the cursor appears on the display, ready for input.
3. Input information or press Ato exit the input screen.
Data Communication
This section describes how to perform IR data
communication and exchange Data Bank Mode,
Mail Mode, and User Information Mode data with
another Module No. 2496 watch.
Important!
•Infrared is an invisible type of light that travels
in a straight line. Because of this, the IR ports
of two devices that are trying to communicate
must point directly at each other.
•In order to help ensure you and your partner
can exchange data without any problem, be
sure that you and the person with whom you
are communicating follow the steps outlined
below.
IR port
Positioning the Watches for Communication
Sender
1Get ready 2Receiver
Position your arms no more than 10cm
(3.5 inches) apart.
Receiver Receiver
Perform the required button operation, and
point the receiver’s face towards the sender.
3Sender
Sender
Perform the sender button operation, and
point its face towards the face of the
receiver.
4Perform data communication
Sender
Receiver
Keep the watches face-to-face until they
beep.

USER’S GUIDE 2496
5
•Note the following important points whenever performing a data
communication operation.
✓Make sure the two IR ports are pointed directly at each other.
✓Make sure the two IR ports are within 10cm (3.5 inches) of each other.
✓Keep the watches still until they beep, which indicates the end of data
communication.
✓To help ensure the watches remain still, do not try to look at their displays
until they beep.
✓Align the IR ports of the two watches within 10 seconds after performing
the button operations to set up the sender and receiver.
•In the case of user information, the two watches exchange their information
with each other. See “Exchanging User Information”for more information.
•Data Bank data can be sent one record at a time, while Mail data can be
sent one message at a time. See “Communicating with Another Watch”for
more information.
•If you experience problems with data communication, see
“Troubleshooting”.
Exchanging User Information
In the case of user information, the two watches exchange their information
with each other, just like two people exchanging names, e-mail addresses,
and phone numbers. Received user information is ultimately stored in the
Data Bank Mode.
•The user information that your watch sends to another watch is the data
you have input in the User Information Mode. Before sending user
information, use the User Information Mode to check it to make sure it is
correct.
To exchange user information
1. Decide with the owner of the other watch who will be the sender and who
will be the receiver.
•It makes no real difference which watch sends user information first. The
following operation causes both the sender and the receiver to get the
information of the other watch.
2. On both watches, press Cto enter the Timekeeping Mode.
•What you do next depends on whether you are the sender or receiver.
The sender should perform steps 6 through 8, while the receiver should
perform steps 3 through 5.
3. On the receiver watch, hold down Bfor about
two seconds.
4. When the watch beeps, release B. This
causes the REC (receive) indicator to appear
on the display.
5. Point the face of the receiver towards the
sender, and perform steps 6 through 8 on the
sender.
6. On the sender watch, hold down Efor about
two seconds.
7. When the watch beeps, release E. This
causes the SEND indicator to appear on the
display.
8. Point the face of the sender at the face of the
receiver, so they are face-to-face.
•User information data exchange starts at
this time.
•Data exchange can take up to 11 seconds. During that time, keep the IR
ports pointed at each other and avoid moving the watches.
9. Both watches beep to indicate when data exchange is complete.
•After data exchange is complete, the watches beep and the message
OK! appears on the displays of both watches for about five seconds.
Next, the watches enter the Data Bank Mode, each showing the data they
just received.
•If data exchange was not successful for some reason, the watches beep
and display the message ERROR! for about five seconds. If this
happens, perform the above procedure again from step 1.
Communicating with Another Watch
Use the following procedures to exchange Data Bank Mode data and Mail
Mode messages with another watch. In this configuration, one watch is the
sender and the other watch is the receiver.
•When a watch receives a mail message, the message text is stored in page
Px4 of the Mail Mode.
To receive data from another watch (receiver operation)
1. Press Cto enter the Timekeeping Mode.
2. Hold down Bfor about two seconds.
3. When the watch beeps, release B. This
causes the REC (receive) indicator to appear
on the display.
4. Point the face of the receiver towards the
sender, and have your partner perform the
sender operation.
•Data communication starts at this time.
•Data exchange can take up to six seconds. During that time, keep the IR
ports pointed at each other and avoid moving the watches.
5. Both watches beep to indicate when data communication is complete.
•After data communication is complete, the message OK! appears on the
receiver display for about five seconds. Next, the watch displays the data
that it received.
•If data communication is not successful for some reason, the watches beep
and display the message ERROR! for about five seconds. After that the
receiver enters the Timekeeping Mode. If this happens, perform the above
procedure again from step 2.
To send data to another watch (sender operation)
1. Enter the mode (Data Bank Mode or Mail
Mode) that contains the data you want to
send, and display the data.
2. Hold down Efor about two seconds.
3. When the watch beeps, release E. This
causes the SEND indicator to appear on the
display.
•At this point, your communication partner
(the receiver) should also be setting up to
receive.
4. Point the sender’s IR port at the receiver’s IR
port, so the watches are face-to-face. Data
communication should start automatically.
•Data communication can take up to six
seconds to complete. Keep the watches still
until they both beep.
•After data communication is complete, the message OK! appears on the
sender display for about five seconds. Next, the watch displays the data that
it sent.
•If data communication is not successful for some reason, the watches beep
and the message ERROR! appears for about five seconds. After that the
sender display shows the data you selected to send in step 1, above. If this
happens, perform the above procedure again from step 2.
Troubleshooting
Problem
Even though I
hold down Eto
send or Bto
receive, the
applicable
SEND or
REC indicator
does not appear
on the watch’s
display.
Probable Cause
•You did not release
the button.
•A setting screen
(digits or cursor
flashing) is on the
display.
•The watch is not in
the correct mode.
•Battery power is low.
What you should do
•After the watch beeps, release
the button.
•Press Ato exit the setting screen.
•Enter the Timekeeping Mode to
exchange user information data
with another watch.
•To send Data Bank data or a mail
message, enter the applicable
mode and then perform the send
operation.
•To receive Data Bank data or a
mail message, enter the
Timekeeping Mode.
•See “Battery”.
The
ERROR!
message keeps
appearing when
I try to perform
data
communication.
•Both watches are
set up as senders
(SEND on the
display) or receivers
(REC on the
display).
•The two IR ports are
too far from each
other.
•The two IR ports are
not pointing straight
at each other.
•Make sure SEND is on the
display of the sender, and REC
is on the display of the receiver.
•Make sure the two IR ports are
no more than 10cm (3.5 inches)
from each other. Communication
becomes more stable the closer
the IR ports are to each other.
•Make the two IR ports are
pointed straight at each other.
•After SEND or
REC appeared on
the display of the
watch you took
longer than about 10
seconds to align the
two IR ports.
•The watches were
moved during data
communication.
•Align the IR ports of the two
watches within 10 seconds after
SEND appears on one watch
and REC appears on the other
watch.
•Keep the IR ports of the two
watches pointed straight at each
other until the watches beep.
•Remove the watches from your
wrists and place them on a table
or other surface to keep them still
during data communication.
•See the illustration for information
about how the watches should be
oriented during data
communication. Be sure to
perform each step in order, from
1to 4.

USER’S GUIDE 2496
6
Note
•This watch does not support IR data communication with any other device
besides another Module No. 2496 watch.
•Do not allow anything to block the path between the two IR ports.
•IR communication may not be possible outdoors or in other areas exposed
to bright light. Best results are obtained under indoor lighting of 500 lux.
•A separate, nearby IR data transfer operation can interfere with the IR data
communication operation of this watch.
•All watch button operations are disabled while SEND or REC is on the
display.
•During a user information data exchange operation, if ERROR! appears
on the watch sending data first (the sender) and the OK! appears on the
other watch (the receiver), no data is exchanged between the two watches.
Perform the user information data exchange operation again. In the above
case, the receiver switches to the Data Bank Mode after displaying OK!,
so you need to change it to the Timekeeping Mode before trying to perform
a new user information data exchange operation.
•When the receiver’s Data Bank memory is full, the ERROR! message
will appear if you try to receive more Data Bank or User Information data.
After that, the receiver switches to the Data Bank Mode, which shows the
message FULL.
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.
Auto Display
Auto Display continually changes the contents of
the digital display.
To turn off Auto Display
Press any button to turn off Auto Display.
To turn on Auto Display
Hold down Cfor about three seconds until the
watch beeps.
•Note that Auto Display cannot be performed
while a setting screen is on the display.
Inputting Text
The following describes how to input text in the Data Bank, Mail, and User
Information Modes.
To input characters
1. When the cursor is on the display, use Dand
Bto cycle through the available characters,
in the sequence shown below.
•The characters you can input depend on
whether you are inputting a name, an e-mail
address, or mail text.
l
l
l
l
l
l
l
l
l
l
Cursor
A to Z
(upper-case)
0 to 9
(number)
(space)
Press D.Press B.
_.
Name
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.
•See the “Character List”for information about the characters you can input.
E-mail address
ato z
(lower-case)
0to 9
(number)
:to {
(symbol)
(space)
Mail text
A to Z
(upper-case)
0 to 9
(number)
:to {
(symbol)
(space)
Auto Return Features
•If you leave the watch in the Data Bank, Mail, Alarm or User Information
Mode for two or three minutes without performing any operation, it
automatically changes to the Timekeeping Mode.
•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 any settings you have made up to that point and exits the setting
screen.
Data and Setting Scrolling
The Band Dbuttons 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.
Initial Screens
When you enter the Data Bank, Mail, World Time or Alarm Mode, the data
you were viewing when you last exited the mode appears first.
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.
•With the 12-hour format, the P(PM) indicator appears on the display for
times in the range of noon to 11:59 p.m. and the A(AM) indicator appears
for times in the range of midnight to 11:59 a.m.
•With the 24-hour format, times are displayed in the range of 0:00 to 23:59,
without any indicator.
•The year can be set in the range of 2000 to 2099.
•The watch’s built-in full automatic calendar automatically makes allowances
for different month lengths and leap years. Once you set the date, there
should be no reason to change it except after you have the watch’s battery
replaced.
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.
•The seconds count of the World Time is synchronized with the seconds
count of the Timekeeping Mode.
•The GMT differential is the time difference between the time zone where
the city is located and Greenwich Mean Time.
•GMT differential is calculated by this watch based on Universal Time
Coordinated (UTC) data.
Backlight Precautions
The backlight uses an EL (electro-luminescent) panel that causes the entire
display to glow for easy reading in the dark. In any mode, press Ato
illuminate the display for about two seconds.
•Holding down Ato display the setting screen or to switch between Daylight
Saving Time and Standard time in the World Time Mode also causes the
backlight to light.
•The electro-luminescent panel that provides illumination loses power after
very long use.
•The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.
•The watch may emit an audible sound whenever the display is illuminated.
This is due to vibration of the EL panel used for illumination, and does not
indicate malfunction.
•The backlight automatically turns off whenever an alarm sounds.
•Frequent use of the backlight shortens the battery life.
Battery
The indicator flashes on the display
whenever battery power is below a certain level.
Low battery power can cause the following
conditions to occur.
•Dim, difficult-to-read display characters
•Failure of the backlight and alarm operations
•Inability of Data Bank and User Information
Mode operations
•Inability to perform IR data communication
If battery power goes low while you are inputting Data Bank data or user
information, the data you are inputting may not be saved in memory. Normal
watch operation will return after the indicator disappears. If it does not
disappear, have the battery replaced.
Always leave battery replacement up to the dealer where you bought the
watch or to an authorized CASIO distributor. Be sure to show the
“Attention dealer or CASIO distributor”information to the person replacing
the battery.

USER’S GUIDE 2496
7
•The following are the trigger values for functions that are monitored for
battery usage.
Approximately 90 consecutive backlight, IR data communication, and alarm
operations
Approximately 900 button input tone operations
•The LIMIT indicator disappears from the display after the battery recovers
its normal power level after it has a chance to “rest.”
Attention dealer or CASIO distributor
1. Open and remove the back cover.
•Opening the back cover causes the message OPEN to appear on the
display.
•If CLOSE appears on the display when you open the back cover, replace
the back cover. Wait for a few minutes and try again.
2. Remove the battery holder.
3. Remove the old battery and load a new one.
4. Replace the battery holder.
5. Touch the AC contact and the battery [+] side with metallic tweezers.
•The AC (all clear) operation DOES NOT delete Data Bank Mode data
and user information stored in memory.
6. Close the back cover.
7. Press any button besides A. This causes the watch to start an internal
data check, which is indicated by CHECK appearing on the display. The
Timekeeping Mode display appears after the internal check is complete.
•The internal check takes up to 10 seconds. All watch buttons are disabled
during that time.
City Code Table
City Code City GMT Differential City Code City GMT Differential
PPG PAGO PAGO –11 JRS JERUSALEM +02
HNL HONOLULU –10 JED JEDDAH +03
ANC ANCHORAGE –09 THR TEHRAN +3.5
YVR VANCOUVER –08 DXB DUBAI +04
SFO SAN FRANCISCO –08 KBL KABUL +4.5
LAX LOS ANGELES –08 KHI KARACHI +05
DEN DENVER –07 MLE MALE +05
MEX MEXICO CITY –06 DEL DELHI +5.5
CHI CHICAGO –06 DAC DHAKA +06
MIA MIAMI –05 RGN YANGON +6.5
NYC NEW YORK –05 BKK BANGKOK +07
CCS CARACAS –04 SIN SINGAPORE +08
RIO RIO DE JANEIRO –03 HKG HONG KONG +08
LON LONDON +00 SEL SEOUL +09
PAR PARIS +01 TYO TOKYO +09
MIL MILAN +01 ADL ADELAIDE +9.5
ROM ROME +01 GUM GUAM +10
BER BERLIN +01 SYD SYDNEY +10
IST ISTANBUL +02 NOU NOUMEA +11
CAI CAIRO +02 WLG WELLINGTON +12
* Based on data as of December 2001.
Sort Table
1(space) 7F13 L19 R25 X31 337 9
2A8G14 M20 S26 Y32 438 -
3B9H15 N21 T27 Z33 539 .
4C10 I16 O22 U28 034 6
5D11 J17 P23 29 135 7
6E12 K18 Q24 W30 236 8
Character List
Name
AAGGMMSSYY44--
BBHHNNTTZZ55..
CCIIOOUU0066
DDJJPPV1177
EEKKQQWW2288
FFLLRRXX3399
E-mail Address
aakkuu44>((]]
bbllvv55??))^
ccmmw 6 6@@* _ _
ddnnxx77!!++'
eeo y y88" , ,{
f p pzz99##--|z
gq 0 0::$ . .}
hhrr11;;%%//~{
I s s22< & &[[
jjt 3 3==''¥
Mail Text
AAKKUU44>((]]
BBLLVV55??))^
CCMMWW66@@* _ _
DDNNXX77!!++'
EEOOYY88" , ,{
FFPPZZ99##--|z
GGQQ00::$ . .}
HHRR11;;%%//~{
IISS22< & &[[
JJTT33==''¥
LIMIT Indicator
Certain functions consume large amounts of battery power, and using them
too much can cause a sudden momentary drop in battery power. The watch
monitors how much you use these high consumption functions, and displays
the LIMIT indicator whenever it determines you are using them too much.
•Backlight and alarm operation, Data Bank and User Information Mode
operations, and IR data communication are disabled while the LIMIT
indicator is on the display.