Operation Guide 3150
Stopwatch
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.
•Monthly alarm
Minutes | 1/100 second |
Seconds
Hours
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.
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.
To set an alarm time
1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set is displayed.
•To set a
•The snooze alarm repeats every five minutes.
2.After you select an alarm, hold down A until the hour setting of the alarm time starts to flash, which indicates the setting screen.
•This operation turns on the alarm automatically.
3.Press Cto move the flashing in the sequence shown below to select other settings.
To measure times with the stopwatch
Elapsed Time
D | ➤D | ➤D | ➤D | ➤B |
Start | Stop |
| Stop | Clear |
Split Time
D | ➤B | ➤B | ➤D | ➤B |
Start | Split | Split release | Stop | Clear |
| (SPL displayed) |
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Two Finishes
D | ➤B | ➤D | ➤B | ➤B |
Start | Split | Stop | Split release | Clear |
| First runner finishes. Second runner | Display time of |
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| Display time of first | finishes. | second runner. |
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Countdown Timer
Hour 
Minutes 
Month 
Day
4. While a setting is flashing, use D and B to change it as described below.
Screen | To do this: | Do this: |
| Change the hour | Use D (+) and |
| and minutes | • With the |
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| as a.m. or p.m. (P indicator). |
| Change the | • To set an alarm that does not include a month |
| month and day | and/or day, set for each setting. |
5. Press Ato exit the setting screen.
HoursSeconds Minutes
You can set the countdown timer within a range of one minute to 24 hours. An alarm sounds when the countdown reaches zero.
•All of the operations in this section are performed in the Countdown Timer Mode, which you enter by pressing C.
Configuring the Countdown Timer
The following are the settings you should configure before actually using the countdown timer. Countdown start time
•See “To configure the countdown timer” for information about setting up the timer.
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the watch is in. In the case of the snooze alarm, the alarm operation is performed a total of seven times, every five minutes, until you turn the alarm off.
•Alarm and Hourly Time Signal operations are performed in accordance with the Timekeeping Mode time.
•To stop the alarm tone after it starts to sound, press any button.
•Performing any one of the following operations during a
Displaying the SNZ setting screen
To test the alarm
In the Alarm Mode, hold down Dto sound the alarm.
To turn an alarm on and off
Countdown End Beeper
The countdown end beeper lets you know when the countdown reaches zero. The beeper stops after about 10 seconds or when you press any button.
To configure the countdown timer
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| countdown timer” to display it. | |
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| 2. Press C to move the flashing in the sequence | |
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| shown below to select other settings. | |
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| Hours | Minutes |
Snooze alarm
indicator Alarm on indicator
1.In the Alarm Mode, use D to select an alarm.
2.Press B to toggle it on and off.
• Turning on a alarm (AL1, AL2, AL3, |
AL4 or SNZ) displays the alarm on indicator |
( ) on its Alarm Mode screen. |
• In all modes, the alarm on indicator is shown |
for any alarm that is currently turned on. |
• The alarm on indicator flashes while the alarm |
is sounding. |
• The snooze alarm indicator ( ) flashes while |
3.When the setting you want to change is flashing, use D and B to change it as described below.
Setting | Screen | Button Operation |
Hours, Minutes |
| Use D (+) and |
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• To specify a countdown start time of 24 hours, set 
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4. Press A to exit the setting screen.
To use the countdown timer
ON
the snooze alarm is sounding and during the 5- |
minute intervals between alarms. |
Seconds
Press D while in the Countdown Timer Mode to start the countdown timer.
• The countdown timer operation continues even |
To turn the Hourly Time Signal on and off
Hourly time signal | 1. In the Alarm Mode, use D to select the Hourly |
on indicator | Time Signal (SIG). |
| 2. Press B to toggle it on and off. |
| • The Hourly Time Signal on indicator ( ) is |
| shown on the display in all modes while this |
| function is turned on. |
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Timer start | Current | |
time |
| timer time |
if you exit the Countdown Timer Mode. |
• Press D while a countdown operation is in |
progress to pause it. Press Dagain to resume |
the countdown. |
• To stop a countdown operation completely, first |
pause it (by pressing D), and then press B. |
This returns the countdown time to its starting |
value. |
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