MA0309-EA
Operation Guide 2548/2821
About This Manual
The operational procedures for Modules 2548 and 2821
are identical. All of the illustrations in this manual show
Module 2548.
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
(Light)
mode. Further details and technical information can be
Module 2548
found in the ŇReference section.
Module 2821
General Guide
Module 2821 does not display an AM indicator (A).
Press C to change from mode to mode.
In any mode, press L to illuminate the display.
Timekeeping Mode
World Time Mode
e-DATA MEMORY Mode
Stopwatch Mode
Countdown Timer Mode
Alarm Mode
Press .
Timekeeping
Daylight Saving Time (DST)
Use the Timekeeping Mode to set and view the current
Hour : Minutes
time and date.
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.
Day of week
Read This Before You Set the Time and Date !
To toggle the Timekeeping Mode time between DST and Standard Time
The times displayed in the Timekeeping Mode and World
1. In the Timekeeping Mode, hold down A until the
Time Mode are linked. Because of this, make sure you
seconds start to flash, which indicates the setting
select a city code for your Home City (the city where you
screen.
normally use the watch) before you set the time and date.
2. Press C to display the DST setting screen.
3. Press D to toggle between Daylight Saving Time
(
displayed) and Standard Time (
displayed).
ON
OFF
Note that you cannot switch between Standard Time
Month Day
is selected as
and Daylight Saving Time while GMT
PM indicator
Seconds
the Home City code.
4. Press A to exit the setting screen.
The DST indicator appears on the display to indicate
To set the time and date
that Daylight Saving Time is turned on.
1. In the Timekeeping Mode, hold down A until the
City code
seconds start to flash, which indicates the setting
screen.
e-DATA MEMORY
2. Press C to move the flashing in the sequence shown
below to select other settings.
You can use the watchs e-DATA MEMORY to store e-mail
Text
addresses, Web page URLs, and other text data.
You can also use a password to limit access to e-DATA
MEMORY contents.
All of the operations in this section are performed in the
e-DATA MEMORY Mode, which you enter by pressing
C.
Seconds
City Code
DST
Hour
e-DATA MEMORY Management
Minutes
12/24-Hour
Year
Day
Month
e-DATA MEMORY can hold up to 315 characters total,
Format
while each record can contain up to 63 characters. The
Record number
maximum number of records depends on the number of
3. When the setting you want to change is flashing, use D and B to change it as
(Page number)
characters per record, as shown below.
described below.
63 characters per record: 5 records
Screen
To do this:
Do this:
7 or fewer characters per record: 40 records
50
Reset the seconds to
Press D.
00
To create a new e-DATA MEMORY record
0N
Toggle between Daylight Saving Time (
)
Press D.
1. In the e-DATA MEMORY Mode, press D and B at the
OFF
and Standard Time (
)
0FF
Remaining memory (%)
same time to display the remaining memory screen.
If % is shown for remaining memory, it means that
0
Change the city code
Use D (east) and B (west).
TYO
memory is full. To store another record, you will first
10:58
P
Change the hour or minutes
Use D (+) and B ().
have to delete some of the records stored in memory.
2. Hold down A until the flashing cursor (
) appears on
#
12H
Toggle between 12-hour (
) and 24-hour
Press D.
12H
the display, which indicates the setting screen.
(
) timekeeping
24H
The setting screen also shows the record number that
2003
Change the year
Use D (+) and B ().
is automatically assigned to the new record.
3. Input the text you want.
6-30
Change the month or day
When inputting the text, use D (+) and B () to
For full information on city codes, see the ŇCity Code Table.
cycle through characters at the current cursor
See ŇDaylight Saving Time (DST) for details about DST setting.
location, and C to move the cursor to the right. See
4. Press A to exit the setting screen.
ŇInputting Text.
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. Note that Module 2821 does not display an AM indicator
(A).
With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
4. Press A to store your data and return to the e-DATA MEMORY record screen
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
(without the cursor).
applied in all modes.
Pressing A causes the message
to appear for about two seconds as the
The day of the week is automatically displayed in accordance with the date (year,
SET
data is stored. After that, the e-DATA MEMORY record screen appears.
month, and day) settings.
The text can show only three characters at a time, so longer text scrolls
continuously from right to left. The last character is indicated by the symbol
after
s
it. Press A to stop and restart scrolling.
Records are stored in memory in the sequence they are created.
1
Operation Guide 2548/2821
To recall e-DATA MEMORY records
World Time
In the e-DATA MEMORY Mode, use D (+) and B () to cycle through e-DATA
World Time shows the current time in 27 cities (29 time
MEMORY records as shown below.
City code
zones) around the world.
Press .
All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
Remaining
Password
Record 1
Record 2
memory
setting
(
)
(
)
To view the time in another city code
screen
screen
In the World Time Mode, press D to scroll through city
Press .
codes (time zones) to the east or B to scroll to the west.
For full information about city codes, see the ŇCity Code
Table.
If the current time shown for a city is wrong, check your
Timekeeping Mode time and Home City code settings
Timekeeping
and make the necessary changes.
Mode time
When the currently selected time zone is one that includes
Current time in the zone
mostly ocean, a value indicating the zones Greenwich
of the selected city code
Mean Time differential appears in place of a city code.
To toggle a city code time between Standard Time and Daylight Saving Time
Remaining Memory Screen
Password Setting Screen
1. In the World Time Mode, use B and D to display the
The value on the remaining memory screen is the percentage of memory that
city code (time zone) whose Standard Time/Daylight
is still available. It does not indicate the number of records that can be stored.
Saving Time setting you want to change.
The Password Setting screen shows xxxx when a password is already
2. Hold down A for about one second to toggle Daylight
registered.
Saving Time (DST displayed) and Standard Time (DST
You can use the Password Setting screen to register, edit, or delete your
not displayed).
password. See ŇUsing a Password to Protect e-DATA MEMORY Data for
The DST indicator is on the display whenever you
more information.
display a city code for which Daylight Saving Time is
turned on.
To edit an e-DATA MEMORY record
Note that the DST/Standard Time setting affects only the currently displayed city
1. In the e-DATA MEMORY Mode, use D (+) and B () to display the record
code. Other city codes are not affected.
you want to edit.
Note that you cannot switch between Standard Time and Daylight Saving Time while
2. Hold down A until the flashing cursor appears on the display.
is selected as the city code.
GMT
3. Use C to move the flashing to the character you want to change.
4. Use D (+) and B () to change the character.
5. After making the changes you want, press A to store them and return to the
Alarms
e-DATA MEMORY record screen.
You can set up to five independent multi-function alarms
Alarm number
To delete an e-DATA MEMORY record
with hour, minutes, month, and day. When an alarm is
1. In the e-DATA MEMORY Mode, use D (+) and B () to display the record
turned on, the alarm tone sounds when the alarm time is
you want to delete.
reached. One of the alarms is a snooze alarm, while the
2. Hold down A until the flashing cursor appears on the display.
other four are one-time alarms. You can also input
3. Press B and D at the same time to delete the record.
reminder text that appears when the alarm time is
The message
appears to indicate that the record is being deleted.
CLR
reached.
After the record is deleted, the cursor appears on the display, ready for
You can also turn on an Hourly Time Signal that causes
input.
the watch to beep twice every hour on the hour.
4. Input data or press A to return to the remaining memory screen.
There are five alarm screens numbered
through
AL1
for the one-time alarm, a snooze alarm screen
Alarm time
AL4
Using a Password to Protect e-DATA MEMORY Data
(Hour : Minutes)
indicated by
. The Hourly Time Signal screen is
SNZ
You can register a 4-digit password to keep e-DATA MEMORY data secure.
indicated by
.
SIG
Timekeeping Mode time
In the case of the snooze alarm screen, the snooze
Important!
alarm indicator (
) appears in the lower right corner
Use a 4-digit password that is easy for you to remember, but difficult for others
of the display.
to decipher. If you forget the password, you will have to have your watch
initialized (which deletes all data in memory) in order to access the e-DATA
Alarm settings (and Hourly Time Signal settings) are available in the Alarm Mode,
MEMORY again. To have the watch initialized, contact the store or dealer where
which you enter by pressing C.
you purchased it, and ask to have the AC operation performed.
Alarm Types
To register a new password
The alarm type is determined by the settings you make, as described below.
1. In the e-DATA MEMORY Mode, use D (+) and
Daily alarm
B () to display the Password Setting screen.
Set the hour and minutes for the alarm time. This type of setting causes the alarm to
This displays a screen that shows
.
PA55
SET
sound everyday at the time you set.
2. Hold down A for about one second until NEW
appears, with the first
flashing.
0
Date alarm
This is the New Password Setting screen.
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
3. Use D (+) and B () to scroll through numbers at the first digit.
Set the month, hour and minutes for the alarm time. This type of setting causes the
4. When the first digit is the number you want, press C to advance to the next digit.
alarm to sound everyday at the time you set, only during the month you set.
5. Repeat steps 3 and 4 to input all four digits of the password you want.
Monthly alarm
Pressing A while inputting a new password clears your input and returns to the
Set the day, hour and minutes for the alarm time. This type of setting causes the alarm
Password Setting screen.
to sound every month at the time you set, on the day you set.
6. After all four of the password digits are the way you want, press C to register
them.
To set an alarm time
Pressing C causes the message
to appear for about one second as the
SET
1. In the Alarm Mode, use D and B to scroll through the
password is stored. After that, the Password Setting screen appears.
alarm screens until the one whose time you want to set
After registering a password, you can input, recall, edit and delete data, if you want.
is displayed.
After you exit the e-DATA MEMORY Mode, you will have to input the password
every time you want to enter it again.
Press .
Press .
To input the password
1. Enter the e-DATA MEMORY Mode.
2. On the Password Input screen (
), press D
xxxx PA55
or B. This causes the first digit of the password to
flash.
To set a one-time alarm, display one of the screens indicated by an alarm number
3. Input the password.
from
through
. To set the snooze alarm, display the screen indicated
AL1
AL4
Use D (+) and B () to scroll through numbers at
by
.
SNZ
each digit.
The snooze alarm repeats every five minutes.
Press C to advance to the next digit.
2. After you select an alarm, hold down A until the hour setting of the alarm time
Pressing A while inputting the password clears your
starts to flash, which indicates the setting screen.
input and returns to the Password Input screen.
This operation automatically turns on the alarm.
4. After the password is the way you want, press C.
3. Press C to move the flashing in the sequence shown below to select other settings.
If the input password matches the one registered, the message
appears,
OK!
followed by an e-DATA MEMORY screen.
Hour
Text
Minutes
Month
Day
If the password does not match, the message
appears, followed by the
ERR
Password Input screen.
Selecting the text causes the text input cursor (
) to appear. There are eight
#
spaces in the text, so you have to press C eight times to move to the Hour
To change the password
setting.
1. Enter the e-DATA MEMORY Mode by inputting the current password.
2. Use D (+) and B () to display the Password Setting screen.
3. Perform the procedure starting from step 2 under ŇTo register a new password to
specify the new password.
To delete the password
1. Enter the e-DATA MEMORY Mode by inputting the current password.
2. Use D (+) and B () to display the Password Setting screen.
3. Hold down A for about one second until
appears, with the first
flashing.
0
NEW
4. Press B and D at the same time to delete the password.
The message
appears to indicate that the password is being deleted. After the
CLR
password is deleted, the Password Setting screen appears.
2
Operation Guide 2548/2821
4. While a setting is flashing, use D, B, and C to change it as described below.
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
Screen
To do this:
Do this:
When the end of the countdown is reached and auto-repeat is turned off, the alarm
Use D (+) and B ().
sounds for 10 seconds or until you stop it by pressing any button. The countdown
Change the hour
12:00
A
With the 12-hour format, set the time correctly as a.m.
and minutes
time is automatically reset to its starting value after the alarm stops.
(A indicator) or p.m. (P indicator).
When the end of the countdown is reached and auto-repeat is turned on, the alarm
To set an alarm that does not include a month and/or
Change the
x-xx
sounds, but the countdown starts again automatically whenever the countdown
month and day
day, set for each setting.
x
reaches zero.
Use D (+) and B () to cycle through characters at the
Input reminder
The countdown timer measurement operation continues even if you exit the
#
current cursor location, and C to move the cursor to the
text
Countdown Timer Mode.
right. See ŇInputting Text.
Press D while a countdown operation is in progress to pause it. Press D again to
resume the countdown.
Note that Module 2821 does not display an AM indicator (A).
To completely stop a countdown operation, first pause it (by pressing D), and then
Pressing B and D at the same time while any setting is flashing automatically
press B. This returns the countdown time to its starting value.
sets the time to AM12:00 and the date to
. It also clears any text that is input
x-xx
for the alarm.
To set up the countdown timer
5. Press A to exit the setting screen.
1. While the countdown start time is on the display in the
Alarm on indicator
If you input reminder text, the text appears in place of
Countdown Timer Mode, hold down A until the hour
the alarm number.
setting of the countdown start time starts to flash, which
If the reminder text is more than three characters, it will
indicates the setting screen.
scroll form right to left.
If the countdown start time is not displayed, use the
If the alarm has a month and/or day setting, the month/
procedure ŇTo use the countdown timer to display it.
day appears at the bottom of the display, in place of the
2. Press C to move the flashing in the sequence shown
Timekeeping Mode time.
below to select other settings.
Hours
Auto-repeat
Minutes
Snooze alarm indicator
3. While a setting is flashing, use D and B to change it as described below.
Alarm Operation
Screen
To do this:
Do this:
All of the graphic area segments start to flash, starting
0:15
Graphic areas
Change the hours or minutes
Use D (+) and B ().
from the point the Timekeeping Mode time reaches one
hour before an alarm time. This pre-alarm feature lets you
OFF
ON
OFF
Toggle auto-repeat on (
) and off (
)
Press D.
know that an alarm time is about to be reached.
The alarm tone sounds at the preset time for 10 seconds,
To specify a countdown start time of 24 hours, set
.
0:00
regardless of the mode the watch is in. In the case of the
4. Press A to exit the setting screen.
snooze alarm, the alarm operation is performed a total of
The auto-repeat on indicator (
) appears on the display while this function is turned on.
seven times, every five minutes, until you turn the alarm
Frequent use of auto-repeat and the alarm can run down battery power.
off.
To stop the alarm tone after it starts to sound, press any button.
Stopwatch
The pre-alarm feature works in the Timekeeping Mode only. To stop the pre-alarm
after it starts, press any button. Note, however, that pressing C also changes to the
The stopwatch lets you measure elapsed time, split times,
Seconds
e-DATA MEMORY Mode.
and two finishes.
If you input reminder text for an alarm, the text appears for one minute on the
The display range of the stopwatch is 23 hours,
Timekeeping Mode screen when the alarm time is reached. You can clear the
59 minutes, 59.99 seconds.
reminder text display by pressing A, B, or D, or by exiting the Timekeeping
The stopwatch continues to run, restarting from zero
Mode.
after it reaches its limit, until you stop it.
In the case of the snooze alarm, the reminder text appears on the Timekeeping
The stopwatch measurement operation continues even
Mode screen for the initial alarm operation only.
if you exit the Stopwatch Mode.
Performing any one of the following operations during a 5-minute interval between
Exiting the Stopwatch Mode while a split time is frozen
snooze alarms cancels the current snooze alarm operation.
on the display clears the split time and returns to
Displaying the Timekeeping Mode setting screen
elapsed time measurement.
Hours
Displaying the
setting screen
SNZ
All of the operations in this section are performed in the
1/100 second
Changing the DST setting of the Home City code in the World Time Mode
Minutes
Stopwatch Mode, which you enter by pressing C.
To test the alarm
To measure times with the stopwatch
In the Alarm Mode, hold down D to sound the alarm.
Elapsed Time
To turn an alarm on and off
Stop
Re-start
Stop
Clear
Start
1. In the Alarm Mode, use D and B to select an alarm.
Alarm on indicator
2. Press A to toggle it on and off.
Split Time
Turning on a alarm (
to
, or
) displays
AL1
AL4
SNZ
the alarm on indicator (
) on its Alarm Mode screen.
Split
Split release
Stop
Clear
Start
In all modes, the alarm on indicator is shown for any
(
displayed)
alarm that is currently turned on.
The alarm on indicator flashes while the alarm is
Two Finishes
sounding.
The snooze alarm indicator (
) flashes while the
Split
Stop
Split release
Clear
Start
snooze alarm is sounding and during the
First runner
Second runner
Display time of
finishes.
finishes.
second runner.
5-minute intervals between alarms.
Display time of
first runner.
To turn the Hourly Time Signal on and off
The time on the screen may not appear to stop immediately when you press a
1. In the Alarm Mode, use D and B to select the Hourly
button to stop timing or to perform a split operation. Despite this, the time recorded
Time Signal (
).
SIG
by your button operation is accurate.
2. Press A to toggle it on (
) and off (
).
ON
OFF
The Hourly Time Signal on indicator (
) is shown on
the display in all modes while this function is turned on.
Backlight
The backlight uses an EL (electro-luminescent) panel that
Auto light switch on
indicator
causes the entire display to glow for easy reading in the
dark. The watchs auto light switch automatically turns on
Hourly time signal on
the backlight when you angle the watch towards your
indicator
face.
The auto light switch must be turned on (indicated by
Countdown Timer
the auto light switch on indicator) for it to opera