User manual
1823-1
Module No. 1823
Timekeeping Mode
Countdown Alarm Mode
GENERAL GUIDE
• Press
DD
DD
D to change from mode to mode.
• After you perform an operation in any mode, pressing
DD
DD
D returns to the Timekeeping Mode.
• If you do not press any button for a few minutes while making settings in any mode (indicated when settings are flashing), the watch automatically clears the setting screen (settings stop
flashing) and returns to the normal display for the mode you are in.
• This watch returns to the Timekeeping Mode whenever you hold down the
DD
DD
D button for one or two seconds. If you ever lose track of what mode you are in or what you should do next,
hold down
DD
DD
D to return to normal timekeeping.
• In any mode press
LL
LL
L to illuminate the display.
Stopwatch Mode Alarm Mode Dual Time Mode
TIMEKEEPING MODE
To set the time and date
1. Hold down
AA
AA
A while in the Timekeeping Mode until the
seconds digits flash on the display because they are
selected
.
2. Press
DD
DD
D to change the selection in the following se-
quence.
Seconds
Day
Minutes
12/24-Hour Format
Hour
Day of week
Month
Day of week
Month
Day
PM indicator
Hour
Minutes
Seconds
3. While the seconds digits are selected (flashing), press
BB
BB
B to reset the seconds to
00. If you press
BB
BB
B while the seconds count is in the range of 30 to 59, the seconds
are reset to 00 and 1 is added to the minutes. If the seconds count is in the range
of 00 to 29, the minutes count is unchanged.
4. While any other digits (beside seconds) are selected (flashing), press
BB
BB
B to in-
crease the number or
CC
CC
C to decrease it. While the 12/24-hour format setting is
selected, press
BB
BB
B or
CC
CC
C to toggle it between 12 and 24. While the day of the week
is selected (flashing), press
BB
BB
B to advance to the next day or
CC
CC
C to return to the
previous day.
• Except for when adjusting the seconds or setting the 12/24-hour format, holding
down a button changes the current selection at high speed.
• When the 12-hour format is selected, the indicator P appears on the display to
indicate “P.M.” times. There is no indicator for “A.M.” times.
• When the 24-hour format is selected, the indicator 24 appears on the display.
5. After you set the time and date, press
AA
AA
A to return to the Timekeeping Mode.
ABOUT THE BACKLIGHT
In any mode, press
LL
LL
L to illuminate the display for about two seconds.
• The backlight of the watch employs an electro-luminescent (EL) light, which loses
illuminating power after very long use.
• The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
• The backlight automatically stops illuminating whenever an alarm sounds.
COUNTDOWN ALARM MODE
The countdown alarm can be set within a range of 1 sec-
ond to 24 hours. When the countdown reaches zero, an
alarm sounds for 10 seconds or until you press any but-
ton.
To set the countdown start time
1. Hold down
AA
AA
A while in the Countdown Alarm Mode. The
hours digits flash on the display because they are
se-
lected.
2. Press
DD
DD
D to change the selection in the following se-
quence.
Hour Minutes Seconds
Current
time
Progress beeper on
indicator
Auto repeat
on indicator
1/10
Second
Seconds
Minutes
Mode indicator
3. Press
BB
BB
B to increase the selected number or
CC
CC
C to decrease it. Holding down either
button changes the selection at high speed.
• Press
BB
BB
B and
CC
CC
C at the same time to clear the starting time to 0:00' 00".
• To set the starting value of the countdown time to 24 hours, set 0:00' 00".
4. After you set the countdown start time, press
AA
AA
A twice to return to the Countdown
Alarm Mode.
To use the countdown alarm
1. Press
BB
BB
B while in the Countdown Alarm Mode to start the countdown alarm.
2. Press
BB
BB
B again to stop the countdown alarm.
• You can resume countdown alarm operation by pressing
BB
BB
B.
3. Stop the countdown alarm and then press
CC
CC
C to reset the countdown time to its
starting value.
• When the end of the countdown is reached and auto repeat timing is off, the alarm
sounds for 10 seconds or until you stop the alarm by pressing any button. Count-
down timing stops and the countdown time is automatically reset to its starting val-
ue after the alarm stops.
To switch auto repeat timing and the progress beeper on and off
1. Hold down
AA
AA
A while in the Countdown Alarm Mode. The hour digits flash on the
display because they are
selected
. Press
AA
AA
A again to move the flashing to the auto
repeat ON/OFF setting.
2. Press
BB
BB
B or
CC
CC
C to toggle auto repeat on (
) and off.
3. Press
DD
DD
D to move the flashing to the progress beeper ON/OFF setting.
4. Press
BB
BB
B or
CC
CC
C to toggle the progress beeper on (
) and off.
5. Press
AA
AA
A to return to the Countdown Alarm Mode.
• When the end of the countdown is reached while auto repeat is on, the alarm sounds,
but the countdown restarts from the beginning without stopping. You can stop the
countdown by pressing
BB
BB
B and manually reset to the start time by pressing
CC
CC
C.
• If you set a starting time of 10 seconds or less and have Auto Repeat turned on, the
countdown alarm tone (which normally sounds for 10 seconds) sounds for only one
second.
• When the progress beeper is turned on, the watch beeps as the countdown time
passes the 10, 5, 4, 3, 2, and 1-minute marks, and the 50, 40, 30, 20, 10, 5, 4, 3, 2,
and 1-second marks.
STOPWATCH MODE
The Stopwatch Mode lets you measure elapsed time, split
times, and two finishes. The range of the stopwatch is 23
hour, 59 minutes, 59.99 seconds. You can also have an
alarm sound when a target time is reached. The Stop-
watch Mode also features an Auto-Start function.
Current time
Target time on indicator
Mode indicator
Minutes
Seconds
1/100 Second
Injury time indicator
(a) Elapsed time measurement
Start
Stop Re-start Stop Clear
Start
Split Split release Stop Clear
Start
Split Stop Split release Clear
(b) Split time measurement
(c) Split time and 1st-2nd place times
First runner
finishes.
Second runner
finishes.
Record time of
first runner.
Record time of
second runner.
About the Auto-Start function
With the Auto-Start function, the watch performs a 5-second countdown. When the
countdown reaches zero, stopwatch operation starts automatically. During the final
three seconds of the countdown, a beeper sounds with each second.
To turn the Auto-Start function on and off
While the display is showing all zeros in the Stopwatch Mode, press
CC
CC
C to toggle it on
and off.
• The indicator AUTO-ST appears and 05 is shown in the upper display while Auto-
Start is turned on. The AUTO-ST indicator is not shown and the upper part of the
display shows the current time when Auto-Start is turned off.
ABOUT THE TARGET TIME ALARM
When turned on, the Target Time Alarm sounds for about ten seconds whenever the
time being kept by the stopwatch reaches a target time you have preset. The indica-
tor INJ-TIME (injury time) also flashes on the display when the target time is reached.
• The INJ-TIME indicator continues to flash on the display as long as stopwatch tim-
ing continues after the target time is reached. The indicator stops flashing, but re-
mains on the display, if you stop the timing operation. Clearing the stopwatch to all
zeros also clears the INJ-TIME indicator from the display.
• When the Target Time Alarm is turned off, the alarm does not sound but the INJ-
TIME indicator flashes when the target time is reached.