USER’S GUIDE 2428
General Guide
The operational procedures for Modules 2428 and 2470 are identical. All of the illustrations in this manual show Module 2428.
•Press B to change from mode to mode. Each mode is explained in detail on the following pages.
| Timekeeping Mode |
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[Module 2470] | [Module 2428] | ||
Timekeeping Mode |
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PM indicator | • In the Timekeeping Mode, press C to switch | ||
Day of the week | between the | ||
• In the Timekeeping Mode, press A to illuminate the | |||
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Day | display for a few seconds. | ||
| • Day of the week is displayed as follows. | ||
| SU: Sunday | MO: Monday | |
| TU: Tuesday | WE: Wednesday | |
| TH: Thursday | F R : Friday | |
| SA: Saturday |
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Hour Minutes
Seconds
Backlight Precautions
The backlight uses an EL
•The
•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.
•Frequent use of the backlight shortens the battery life.
Alarm Mode
•After you perform an operation in any mode, pressing B returns to the Timekeeping Mode.
Alarm Mode |
| Stopwatch Mode |
| Time Setting Mode |
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Stopwatch Mode
Mode Indicator | The Stopwatch Mode lets you measure elapsed time, | ||||
Minutes | Seconds | split times, and two finishes. The range of the | |||
stopwatch is 59 minutes, 59.99 seconds. | |||||
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1/100 second | Split time |
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(a) Elapsed time measurement |
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Start |
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(b) Split time measurement |
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(c) Split time and |
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Start |
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| First runner | Second runner | Record time of |
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| finishes. | finishes. | second runner. |
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Mode indicator
Hour Minutes
When the Daily Alarm is switched on, the alarm sounds for 20 seconds at the preset time each day. When the Hourly Time Signal is switched on, the watch beeps every hour on the hour.
Time Setting Mode
Hourly time | Alarm on |
signal on | indicator |
indicator |
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To set the alarm time
1.Hold down A while in the Alarm Mode until the hour digits start to flash on the display. The hour digits flash because they are selected.
2.Press A to change the selection in the following sequence.
•Pressing A also illuminates the display.
Hour |
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Normal Alarm Mode (No digit flashes)
PM indicator
Day of the week
Day
To set the time and date
1. Use B to enter the Time Setting Mode.
•The second’s digits flash because they are selected.
2.Press A to change the selection in the following sequence.
•Pressing A also illuminates the display.
Seconds 
Hour 
Minutes
| Day of week |
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| Month |
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•Once you reach the normal Alarm Mode, you have to hold down A again until the hour digits start to flash.
3.Press C to increase the selected digits. Holding down C changes the number at high speed.
•The format
•When setting the alarm time using the
4.After you set the alarm time, press A to return to the Alarm Mode. At this time the Daily Alarm is switched on automatically.
To stop the alarm
Press A to stop the alarm after it starts to sound.
To switch the Daily Alarm and Hourly Time Signal on and off
Press C while in the Alarm Mode to change the status of the Daily Alarm and Hourly Time Signal in the following sequence.
[Alarm on Indicator/Hourly Time Signal on Indicator]
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| Both on | Both off |
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| Hourly Time | |||
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To test the alarm
Hold down C while in the Alarm Mode to sound the alarm.
Hour Minutes
Seconds
3.While the second’s digits are selected (flashing), press C to reset the seconds to “00”. If you press C while the second’s count is in the range of 30 to 59, the seconds are reset to “00” and 1 is added to the minutes. If the second’s count is in the range of 00 to 29, the minute’s count is unchanged.
4.While any other digits (besides seconds) are selected (flashing), press C to increase the number. While the day of the week is selected, pressing C advances to the next day. Holding down C changes the current selection at high speed.
5.After you set the time and date, press B to return to the Timekeeping Mode.
• If you do not operate any button for a few minutes while a selection is flashing, the flashing stops and the watch goes back to the Timekeeping Mode automatically.
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