Filter
Top Products
Operation Guide 3257
E-30
To turn the hourly time signal on and off
1.In the Alarm Mode, use D to select the Hourly Time
Signal.
2.Press C to toggle the displayed item on and off.
• Turning on the Hourly Time Signal displays the hourly
time signal on indicator (
) on its screen.
• The hourly time signal on indicator is displayed in all
modes.
Hourly time signal
on indicator
E-31
Dual Time
The Dual Time Mode lets you keep track of time in a
different time zone.
• The seconds count of the Dual Time is synchronized
with the seconds count of the Timekeeping Mode.
To set the Dual Time
1.Press B to enter the Dual Time Mode (page E-5).
2.Use A, C, and D to set the Dual Time Mode time.
• Each press of D (+) and C (–) changes the time
setting in 30-minute increments.
• Pressing A sets the Dual Time Mode to the same time
as the Timekeeping Mode.
Dual time
(Hour : Minutes Seconds)
Timekeeping Mode time
E-32
Backlight
The backlight uses an LED (light-emitting diode) and a
light guide panel that cause the entire display to glow for
easy reading in the dark. The watch’s auto light switch
automatically turns on the backlight when you angle the
watch towards your face.
• The auto light switch must be turned on (indicated by
the auto light switch on indicator) for it to operate.
• See “Backlight Precautions” on page E-40 for other
important information about using the backlight.
To turn on the backlight manually
In any mode, press L to illuminate the display for about
one second.
• The above operation turns on the backlight regardless of
the current auto light switch setting.
Auto light switch
on indicator
E-33
About the Auto Light Switch
Turning on the auto light switch causes the backlight to turn on for about one second,
whenever you position your wrist as described below in any mode.
Moving the watch to a position that is parallel to the ground and then tilting it
towards you more than 40 degrees causes the backlight to turn on.
Parallel to
ground
More than
40°
E-34
Warning!
• Always make sure you are in a safe place whenever you are reading the
display of the watch using the auto light switch. Be especially careful when
running or engaged in any other activity that can result in accident or injury.
Also take care that sudden illumination by the auto light switch does not
surprise or distract others around you.
• When you are wearing the watch, make sure that its auto light switch is turned
off before riding on a bicycle or operating a motorcycle or any other motor
vehicle. Sudden and unintended operation of the auto light switch can create a
distraction, which can result in a traffic accident and serious personal injury.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down D for about two seconds to toggle the auto light
switch on (
displayed) and off ( not displayed).
• The auto light switch on indicator (
) is on the display in all modes while the auto
light switch is turned on.
E-35
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.
Auto Return Feature
If you leave a screen with flashing digits on the display for two or three minutes without
performing any operation, the watch automatically saves any settings you have made
up to that point and exits the setting screen.
Initial Screens
When you enter the Alarm Mode, the screen you were viewing when you last exited
the mode appears first.
Data and Setting Scrolling
The C 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 through the data at high speed.
E-36
Timekeeping
• Resetting the seconds to 00 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 00 without changing the minutes.
• With the 12-hour format, the P (p.m) indicator appears on the display for times in the
range of noon to 11:59 p.m. and no indicator appears for times in the range of
midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
• The year can be set in the range of 2000 to 2039.
• The watch’s built-in full automatic calendar automatically 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.
Stopwatch
• You can use lap time measurement to time how long it takes to complete a specific
portion (such as a single lap) of a race.
• You can use split time measurement to time how long it takes to get from the start to
a specific point in a race.
E-37
Memory Management
Each time you press C to start a new elapsed time or lap/split operation in the
Stopwatch Mode (page E-10), the watch automatically creates a new “log” in its
memory. The log remains open for data storage until you permanently close it by
pressing D to clear the stopwatch to all zeros.
• The watch has enough memory to hold up to 61 records. Since each log title screen
(page E-19) uses up one record of memory space, the maximum number of lap/split
time records you can store depends on how many logs there are currently in
memory, as shown below.
Number of Logs
Currently in Memory
1
2
5
Memory Capacity
61 Records
Lap/Split Time Record Capacity
61 records – 1 log title screen = 60
61 records – 2 log title screens = 59
61 records – 5 log title screens = 56
• The watch also calculates the cumulative total distance for all stopwatch operations
since the last time the cumulative total distance was reset (page E-21). The
cumulative total does not affect memory capacity.
E-38
• If watch memory is already full when you perform a stopwatch button operation that
creates a new log, the oldest log in memory and all of its records are deleted
automatically to make room for the new log.
• If you are adding records to the only log in memory and watch memory becomes
full, adding another record causes the oldest record in the log to be deleted
automatically to make room for the new record.
• If you are adding records to a log when there are multiple logs in memory and watch
memory becomes full, adding another record causes the oldest log in memory and
all of its records to be deleted automatically to make room for new records.
E-39
How Stopwatch Data is Stored
The following table describes how data is stored when you perform the various button
operations described on page E-10.
Stopwatch Button Operation
C Start (from all zeros)
C Stop
C Re-start
D Lap/Split
D Clear
Data Store Operation
Creates a new log: current date and distance
(updated as timing progresses)
Time measurement stops, without storing data in
memory.
Time measurement re-starts, without storing
data in memory.
Creates new record: displayed lap/split times
Creates new record: displayed lap/split times
(Stopwatch display is cleared to all zeros.)