Operation Guide 3426
E-30
To switch the Daily Alarm and Hourly Time Signal on and off
Press D while in the Alarm Mode to change the status of the Daily Alarm and Hourly
Time Signal in the following sequence.
D D D
D
Both on Both off Daily Alarm only Hourly Time
Signal only
To test the alarm
Hold down D while in the Alarm Mode to sound the alarm.
E-31
Illumination
This watch has an LED (light-emitting diode) panel that
causes the entire display to glow for easy reading in the
dark.
See “Illumination Precautions” (page E-37) for more important
information.
To illuminate the display
In any mode, press B to turn on illumination.
E-32
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.
Graphic Areas
The following describes the information indicated by the three graphic areas in each
mode.
Graphic area AGraphic area C
Graphic area B
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Mode Graphic Area A Graphic Area B Graphic Area C
Timekeeping
Timekeeping Mode
minutes
Timekeeping Mode
seconds
Timekeeping Mode
10-seconds
Stopwatch
Stopwatch Time
minutes
Stopwatch Time
1/20-second
Stopwatch Time
10-seconds
Preset Timer Preset Time minutes
Preset Time
1/20-second
Preset Time
10-seconds
Countdown Timer
Countdown Time
minutes
Countdown Time
1/20-second
Countdown Time
10-seconds
World Time
World Time Mode
minutes
World Time Mode
seconds
World Time Mode
10-seconds
Alarm No indication No indication No indication
E-34
Button Operation Tone
The button operation tone sounds any time you press one
of the watch’s buttons. You can turn the button operation
tone on or off as desired.
Even if you turn off the button operation tone, the alarm,
the Hourly Time Signal, the countdown timer alarm, and
the event time alarm all operate normally.
To turn the button operation tone on and off
In any mode (except when a setting screen is on the
display), hold down C to toggle the button operation tone
on (
not displayed) and off ( displayed).
Holding down C to turn the button operation tone on or off also causes the watch’s
current mode to change.
is displayed in all modes when the button operation tone is turned off.
Mute indicator
E-35
Scrolling
The B and D buttons 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 at high speed. This is true except when the countdown timer number
is fl ashing on the Countdown Timer Mode screen (page E-21).
Auto Return Features
If you leave the watch in the Alarm Mode for two or three minutes without performing
any operation, it changes to the Timekeeping Mode automatically.
If you leave a screen with fl ashing digits on the display for two or three minutes
without performing any operation, the watch exits the setting screen automatically.
Timekeeping
Resetting the seconds to 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
without changing the minutes.
The year can be set in the range of 2000 to 2099.
E-36
The watch’s built-in full automatic calendar 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 seconds count of the World Time is synchronized with the seconds count of the
Timekeeping Mode.
All World Time Mode times are calculated from the current Home City time in the
Timekeeping Mode using UTC time differential values.
The UTC differential is a value that indicates the time difference between a
reference point in Greenwich, England and the time zone where a city is located.
The letters “UTC” is the abbreviation for “Universal Time Coordinated”, which is the
world-wide scientifi c standard of timekeeping. It is based upon carefully maintained
atomic (cesium) clocks that keep time accurately to within microseconds. Leap
seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s
rotation.
E-37
Illumination Precautions
Illumination loses power after very long use.
Illumination may be hard to see when viewed under direct sunlight.
Illumination turns off automatically whenever an alarm sounds.
Frequent use of illumination runs down the battery.
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Specifi cations
Accuracy at normal temperature: ±15 seconds a month
Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Home City code (can be assigned one of 48 city codes); Daylight Saving
Time (summer time)/Standard Time
Stopwatch
Measuring units: Upper display: 1 second; Lower display: 1 second
Measuring capacities: Upper display: 59'59"; Lower display: 99'59.99"
Measuring modes: Elapsed time, event time
Preset Timer
Measuring unit: 1 second
Preset Start Times: 10, 12, 15, 20, 25, 30, 35, 40, 45 minutes
Timer modes: Elapsed time, Auto-repeat
Measurement of elapsed time for up to 60 minutes after the countdown reaches
zero
E-39
Countdown Timer
Number of Timers: Up to 9
Measuring unit: 1 second
Input range: 59'55" (1-minute increments and 5-second increments)
Other: Auto-repeat timing
World Time: 48 cities (29 time zones)
Other: Daylight Saving Time/Standard Time
Alarm: Daily alarm, Hourly time signal
Illumination: LED (light-emitting diode)
Other: Button operation tone on/off
Battery: One lithium battery (Type: CR2025)
Approximately 10 years on type CR2025 (1 stopwatch elapsed time operation per
week (10-second alarm when timing reaches preset event time); 1 preset timer
operation per week (10-second alarm when countdown reaches zero); 1 countdown
timer operation per week (8 1-second beeps when any countdown timer reaches
zero, 5-second alarm when last countdown timer reaches zero), daily alarm
operation 10 seconds per day, 1.5 seconds of illumination per day)
