Operation Guide 3135 3206
Tide Graph
The Tide Graph graphically represents the current tide condition using one of three patterns that represent spring tide, intermediate tide, and neap tide, as shown below.
Tide Name | Graph | Description |
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Spring Tide |
| Large difference between |
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| high tide and low tide. Occurs |
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| a few days before and after a |
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| New Moon and Full Moon. |
Intermediate Tide |
| Medium difference between |
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| high tide and low tide. |
Neap Tide |
| Small difference between |
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| high tide and low tide. Occurs |
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| a few days before and after |
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| the first quarter and last |
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| quarter of a half moon. |
•The Tide Graph flashes as shown below to indicate the tide range.
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High tide | Low | tide | High tide | ||||
•The segments on either end of the Tide Graph flash during high tide.
Lunitidal Interval
Theoretically, high tide is at the Moon’s transit over the meridian and low tide is about six hours later. Actual high tide occurs somewhat later, due to factors such as viscosity, friction, and underwater topography. Both the time differential between the Moon’s transit over the meridian until high tide and the time differential between the Moon’s transit over the meridian until low tide are known as the “lunitidal interval”.
Auto Return Features
•The watch returns to the Timekeeping Mode automatically if you do not perform any button operation for two or three minutes in the Tide/Moon Data, Alarm, Data Recall, Digital Compass, or Barometer/Thermometer Mode.
•If you do not perform any button operation while in the Altimeter Mode, the watch returns to the Timekeeping Mode automatically after nine or 10 hours.
•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.
Initial Screens
When you enter the World Time or Alarm Mode, the data you were viewing when you last exited the mode appears first.
Scrolling
The A and C buttons are used on the setting screen to scroll through data on the display. In most cases, holding down these buttons during a scroll
Button Operation Tone
Mute indicator | The button operation tone sounds any time you | |
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| press one of the watch’s buttons. You can turn the |
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| button operation tone on or off as desired. |
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| • Even if you turn off the button operation tone, |
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| the alarm, Hourly Time Signal, and Countdown |
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| Timer Mode alarm all operate normally. |
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| To turn the button operation tone on and off |
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| In any mode (except when a setting screen is on |
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| the display), hold down D to toggle the button |
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| operation tone on ( not displayed) and off ( |
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| displayed). |
•Since the D button also is the mode change button, holding it down to turn the button operation 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
When turned on, Power Saving enters a sleep state automatically whenever the watch is left for a certain period in an area where it is dark. The table below shows how watch functions are affected by Power Saving.
• There actually are two sleep state levels: “display sleep” and “function sleep”.
Elapsed Time in | Display | Operation |
Dark |
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60 to 70 minutes | Blank, with | Display is off, but all functions are |
(Display Sleep) | PS flashing | enabled. |
6 or 7 days | Blank, with | All functions are disabled, but |
(Function Sleep) | PS not flashing | timekeeping is maintained. |
•Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
•The watch will not enter the sleep state while the digital time is between 6:00 AM and 9:59 PM. If the watch is already in the sleep state when the digital time reaches 6:00 AM, however, it will remain in the sleep state.
•The watch will not enter the sleep state while it is in the Digital Compass, Barometer/Thermometer, Altimeter, Countdown Timer, or Stopwatch Mode. When the watch is left in any mode besides the Countdown Timer and Stopwatch Mode, it will return to the Timekeeping Mode automatically after a specific amount of time. Then if left in the dark for the elapsed time indicated in the table above, the watch will enter the sleep state.
To recover from the sleep state
Perform any one of the following operations.
•Move the watch to a
•Press any button.
•Angle the watch towards your face for reading.
To turn Power Saving on and off
operation scrolls through the data at high speed.
Sensor Malfunction Indicator
Subjecting the watch to strong impact can cause sensor malfunction or improper contact of internal circuitry. When this happens, ERR (error) will appear on the display and sensor operations will be disabled.
• | If ERR appears while a measurement operation is being performed in a |
| sensor mode, restart the measurement. If ERR appears on the display |
• | again, it can mean there is something wrong with the sensor. |
Even if battery power is at Level 1 or Level 2, the Digital Compass Mode, | |
| Barometer/Thermometer Mode, or Altimeter Mode sensor may be disabled |
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Power Saving on indicator
1.In the Timekeeping Mode, hold down E until the city code starts to flash, which indicates the setting screen.
2.Press D nine times until the Power Saving on/off screen appears.
3.Press A to toggle Power Saving on (ON) and off (OFF).
4.Press E to exit the setting screen.
•The Power Saving on indicator (PS) is on the display in all modes while Power Saving is turned on.
if there is not enough voltage available to power it sufficiently. In this case, |
ERR will appear on the display. This does not indicate malfunction, and |
sensor operation should resume once battery voltage returns to its normal |
level. |
• If ERR keeps appearing during measurement, it could mean there is a |
problem with the applicable sensor. |
Whenever you have a sensor malfunction, be sure to take the watch to your original dealer or nearest authorized CASIO distributor as soon as possible.
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
•With the
•The
•The watch’s
•The times for the Timekeeping Mode and all the city codes of the World Time Mode are calculated in accordance with each city’s UTC offset.
•The UTC offset is a value that indicates the time difference between a reference point in Greenwich, England and the time zone where a city is located.
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