User manual

Operation Guide 2900/2901
2
Illumination
The watch has an EL (electro-Iuminescent) panel that
causes the entire display to glow for easy reading in the
dark.
• See “Illumination Precautions” for other important
information.
To illuminate the display
In any mode, press L to illuminate the display.
• You can specify 1.5 seconds or three seconds as the
illumination duration. See “To specify the illumination
duration” for more information.
To measure times with the stopwatch
Elapsed time
Start Stop Re-start Stop Clear
Start
Split
(SPL displayed)
Split release Stop Clear
Start
Split Stop Split release Clear
Split time
Two Finishes
First runner
finishes.
Display time of
first runner.
Second runner
finishes.
Display time of
second runner.
Dual Time
The Dual Time Mode lets you keep track of time in a different time zone.
• In the Dual Time Mode, the seconds count is synchronized with the seconds count
of the Timekeeping Mode.
To set the Dual Time
1. Press C to enter the Dual Time Mode.
2. Hold down A until the hour setting starts to flash,
which indicates the setting screen.
3. Press C to move the flashing between the hour and
minutes settings.
4. Press B to increase the setting. Holding down B
changes the setting at high speed.
5. Press A to exit the setting screen.
Stopwatch
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.
Three-second indicator
Timekeeping Mode time
(Hour : Minutes)
Mode indicator
Seconds Hour : Minutes
Minutes
1/100 second
Mode indicator
Hours
Seconds
To specify the illumination duration
In the Timekeeping Mode, hold down B for about two seconds to toggle the
illumination duration between three seconds (
3" displayed) and 1.5 seconds
(
3" not displayed).
• Pressing B also toggles between 12-hour and 24-hour timekeeping.
• When the three-second setting is selected, the three-second (
3" ) indicator remains
on the display in all modes.
• To protect against running down the watch’s battery, the watch automatically
switches to the 1.5-second setting about seven hours after the three-second setting
is selected. To continue to use the three-second setting, perform the above
procedure again.
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 features
If you leave a screen with flashing digits for one or two minutes without performing
any operation, the watch automatically saves any settings you have made up to that
point and exits the setting screen.
Illumination Precautions
• The electro-luminescent panel that provides illumination loses power after very long
use.
• Illumination may be hard to see when viewed under direct sunlight.
• Illumination automatically turns off whenever an alarm sounds.
• 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 illumination runs down the battery.