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Operation Guide 3068
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.
Power Saving Function
When turned on, the Power Saving function enters a sleep
state automatically whenever the watch is left in an area
where it is dark for a certain period. The table below
shows how watch functions are affected by the Power
Saving function.
Power saving indicator
Elapsed Time
Display
in Dark
60 to 70 minutes
Blank, with Power Saving
indicator (PS) flashing
6 or 7 days
Blank, with Power Saving
indicator (PS) not flashing
• 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 10:59 PM. If the
watch is already in the sleep state when 6:00 AM arrives, however, it will remain in
the sleep state.
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 A one more time.
3. Press C twice until the Power Saving on/off screen
appears.
4. Press D to toggle Power Saving on (
(
).
OFF
5. Press A twice to exit the setting screen.
• The Power Saving indicator (PS) is on the display in all
On/Off status
modes while Power Saving is turned on.
Auto Return Features
• If you leave the watch in the Tide/Moon Data Mode or Alarm Mode for two or three
minutes without performing any operation, it returns to the Timekeeping Mode
automatically.
• If you leave the watch with a flashing setting 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. In most cases, holding down these buttons during a scroll operation
scrolls through the data at high speed.
Initial Screens
When you enter the World Time or Alarm Mode, the data you were viewing when you
last exited the mode appears first.
Moon Phase Indicator
The Moon phase indicator of this watch indicates the
Moon phase indicator
current phase of the Moon as shown below.
(part you cannot see)
Moon Phase
Indicator
0.0 - 1.8 1.9 - 3.6 3.7 - 5.5 5.6 - 7.3 7.4 - 9.2 9.3 - 11.0 11.1 - 12.9 13.0 - 14.7
Moon Age
Moon Phase
New
Moon
Moon Phase
Indicator
14.8 - 16.6 16.7 - 18.4 18.5- 20.3 20.4 - 22.1 22.2 - 24.0 24.1 - 25.8 25.9 - 27.7 27.8 - 29.4
Moon Age
Moon Phase Full
Moon
• The Moon phase indicator shows the Moon as viewed at noon from a position in the
Northern Hemisphere looking south. Note that at times the image shown by the
Moon phase indicator may differ from that of the actual Moon in your area.
• The left-right orientation of the Moon phase is reversed when viewing from the
Southern Hemisphere or from a point near the equator.
Tide Graph
The tide graph shows the relative rise and fall of the water level from the average level.
• The vertical axis of the graph represents level differential (1 dot = 0.2 meters), while
the horizontal axis represents time (1 dot = 1 hour).
Water level A
Water Level A
Average
water level
Water Level B
and its
differential
(Vertical Axis)
Time
Water level B
(HorizontalAxis)
• Periods when the differential from the average water level exceeds three meters are
not shown on the graph.
Operation
All functions enabled, except
for the display
Beeper tone, illumination, and
display are disabled.
) and off
ON
Moon phase (part you can see)
First
Quarter
(Waxing)
Last
Quarter
(Waning)
X2
X3
X1
2 meters
3 meters
1 meter
1 meter
2 meters
3 meters
–
–
–
1Dot
20 centi-
40 centi-
60 centi-
meters
meters
meters
1Dot
1 hour
1 hour
1 hour
Thermometer
Temperature Sensor Calibration
The temperature sensor built into the watch is calibrated at the factory and normally
requires no further adjustment. If you notice serious errors in the temperature readings
produced by the watch, you can calibrate the sensor to correct the errors.
Important!
Incorrectly calibrating the temperature sensor can result in incorrect readings.
Carefully read the following before doing anything.
• Compare the readings produced by the watch with those of another reliable and
accurate thermometer.
• If adjustment is required, remove the watch from your wrist and wait for 20 or 30
minutes to give the temperature of the watch time to stabilize.
To calibrate the temperature sensor
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Press A one more time to display the temperature
sensor calibration screen.
3. Use D (+) and B (–) to change the calibration value.
• You can change the value in 0.1°C (0.2°F) steps, in a
range of ±10°C (±18°F). The calibration value shows
''--.-'' when the setting is outside the allowable range.
Calibration value
• Temperature sensor calibration will not be possible if the current reading is
outside the allowable display range (–10.0°C/14.0°F to 60.0°C/140.0°F) and the
calibration value shows ''- -''.
4. After configuring the setting you want, press A twice to exit the setting screen.
To specify the temperature display unit
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Press A one more time.
3. Press C once to display the temperature unit setting
screen.
l
4. Use D to switch between Celsius (°C) and Fahrenheit
(°F).
• The initial factory default and the initial default after
Temperature unit
battery replacement is Celsius (°C).
5. After configuring the setting you want, press A twice to exit the setting screen.
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 (PM) 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 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 or when battery power drops to
Level 5.
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 time in the Timekeeping
Mode using UTC time differential values.
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.
Auto light switch precautions
• The auto light switch will not turn on illumination during about the first 40 seconds
(until the tide graph and Moon phase indicator appear) after you enter the
Timekeeping Mode or Tide/Moon Data Mode. This is because the watch is reading
data required to display the tide graph and Moon phase indicator.
• The auto light switch is turned off automatically whenever battery power is at Level 4.
• Wearing the watch on the inside of your wrist, movement of your arm, or vibration of
your arm can cause frequent activation of the auto light switch and illumination of the
display. To avoid running down the battery, turn off the auto light switch whenever
engaging in activities that might cause frequent illumination.
• Note that wearing the watch under your sleeve while the auto light switch is turned
on can cause frequent illumination of the display and can run down the battery.
• Illumination may not turn on if the face of the watch is
more than 15 degrees above or below parallel. Make
sure that the back of your hand is parallel to the ground.
• Illumination turns off after the preset illumination
duration (see "To specify the illumination duration"), even
if you keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with
proper operation of the auto light switch. If illumination
does not turn on, try moving the watch back to the
starting position (parallel with the ground) and then tilt it
back towards you again. If this does not work, drop your
arm all the way down so it hangs at your side, and then
bring it back up again.
• Under certain conditions, illumination may not turn on until about one second after
you turn the face of the watch towards you. This does not necessarily indicate
malfunction of the auto light switch.
• You may notice a very faint clicking sound coming from the watch when it is shaken
back and forth. This sound is caused by mechanical operation of the auto light
switch, and does not indicate a problem with the watch.
5
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