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Operation Guide 3150
9
• If you change your Home City to one that is within the same transmitter
area, the current DST setting will be retained. If you change to a city that is
outside your current transmitter area, DST will be turned off automatically.
Transmitter area city codes
•
TYO
,
TPE
, and
SEL
• HKG
,
BJS
• HNL, ANC, LAX, DEN, CHI, NYC, YVR, YEA, MEX,
YTO, YHZ, and YYT
• LON
,
PAR
,
BER
,
ATH
,
LIS
,
MAD
,
ROM
,
STO
, and
MOW
• All other city codes
4. When the setting you want is selected, press A to exit the setting screen.
• The DST indicator appears to indicate that Daylight Saving Time is turned on.
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 Area
The information shown in the graphic area depends on the current mode.
Mode
Timekeeping Mode
Rally Mode
Recall Mode
World Time Mode
Alarm Mode
Stopwatch Mode
CountdownTimer
Mode
Graphic Area
Timekeeping Mode seconds
Target time number/Measurement
time 1/10 seconds during
measurement
Record number
Timekeeping Mode seconds
No indication
Stopwatch Mode 1/10 seconds
CountdownTimer Mode seconds
Graphic Area
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 alarms, the Hourly Time Signal, the
countdown alarm, and Rally Mode auto start 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.
• The
indicator is displayed in all modes when the button operation tone is
turned off.
Power Saving Function
When turned on, the Power Saving function
enters a sleep state automatically whenever the
watch is left in an area for a certain period where
it is dark. The table below shows how watch
functions are affected by the Power Saving
function.
Elapsed Time
in Dark
60 to 70 minutes
6 or 7 days
Display
Blank, with Power Saving
indicator (PS) flashing
Blank, with Power Saving
indicator (PS) not flashing
Operation
All functions enabled, except
for the display
Auto receive, beeper tone,
illumination, and display are
disabled.
• Wearing the watch inside the sleeve of clothing can cause it to enter the
sleep state.
• The watch will not enter the sleep state between 6:00 AM and 9:59 PM. If
the watch is already in the sleep state when 6:00 AM arrives, however, it
will remain in the sleep state.
Power saving indicator
To recover from the sleep state
Perform any one of the following operations.
• Move the watch to a well-lit area.
• Press any button.
• Angle the watch towards your face for reading.
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down A until
the city code starts to flash, which indicates
the setting screen.
2. Press C nine times until the Power Saving
on/off screen appears.
3. Press D to toggle Power Saving on (
) and
off (
).
4. Press A to exit the setting screen.
• The Power Saving indicator (PS) is on the display
in all modes while Power Saving is turned on.
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On/Off status
Radio-controlled Atomic Timekeeping Precautions
• Strong electrostatic charge can result in the wrong time being set.
• The time calibration signal bounces off the ionosphere. Because of this,
such factors as changes in the reflectivity of the ionosphere, as well as
movement of the ionosphere to higher altitudes due to seasonal
atmospheric changes or the time of day may change the reception range of
the signal and make reception temporarily impossible.
• Even if the time calibration signal is received properly, certain conditions
can cause the time setting to be off by up to one second.
• The current time setting in accordance with the time calibration signal takes
priority over any time settings you make manually.
• The watch is designed to update the date and day of the week
automatically for the period January 1, 2000 to December 31, 2099. Setting
of the date by the time calibration signal cannot be performed starting from
January 1, 2100.
• This watch can receive signals that differentiate between leap years and
non-leap years.
• Though this watch is designed to receive both time data (hour, minutes,
seconds) and date data (year, month, day), certain signal conditions can
limit reception to time data only.
• If you are in an area where proper time calibration signal reception is
impossible, the watch keeps time within ±15 seconds a month at normal
temperature.
• If you have problems with proper time calibration signal reception or if the
time setting is wrong after signal reception, check your current city code,
DST (summer time), and auto receive settings.
• The Home City setting reverts to the initial default of
TYO (Tokyo)
whenever the battery power level drops to Level 5 or when you have the
rechargeable battery replaced. If this happens, change the Home City to
the setting you want.
Transmitters
The time calibration signal received by this watch depends on the currently
selected Home City code.
• When a U.S. time zone is selected, the watch receives the time calibration
signal transmitted from the United States (Fort Collins).
• When a Japanese time zone is selected, the watch receives the time
calibration signal transmitted from Japan (Fukushima and Fukuoka/Saga).
• When a European time zone is selected, the watch receives the time
calibration signals transmitted from Germany (Mainflingen) and England
(Anthorn).
• When a China time zone is selected, the watch receives the time calibration
signals transmitted from China (Shangqiu City).
• When your Home City is LIS, LON, MAD, PAR, ROM, BER, STO, ATH,
MOW (which can receive both the Anthorn and Mainflingen signals), the
watch first tries to pick up the signal it last successfully received. If that fails,
it tries the other signal. For the first receive after you select your Home City,
the watch tries the nearest signal first (Anthorn for LIS, LON, Mainflingen
for MAD, PAR, ROM, BER, STO, ATH, and MOW).
Auto Return Features
• If you leave a screen with flashing digits on the display for two or three
minutes without performing any operation, the watch exits the setting
screen automatically.
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.
Initial Screens
When you enter the Rally Mode, Recall Mode, World Time Mode, or Alarm
Mode, the data you were viewing when you last exited the mode appears first.
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.
• The year can be set in the range of 2000 to 2099.
• 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.
• The current time for all city codes in the Timekeeping Mode and World Time
Mode is calculated in accordance with the Coordinated Universal Time
(UTC) for each city, based on your Home City time setting.
World Time
• The seconds count of the World Time is synchronized with the seconds
count of the Timekeeping Mode.
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.
• 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.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.