Casio 3445 Operation Manual Download Page 12

E-95

 Checking the Tide Level, Moon Phase, and Moon Age (Tide/Moon)

You can use the watch to check the current tide level, Moon phase, and Moon age.

 The above information is displayed for the currently selected Home Time City (page E-30).

 Note that the tide and Moon information displayed by this watch is approximate and is intended as 

general information only. Never try to use it for marine navigation or any other purposes requiring 
accurate measurements.

To view the current tide level

In the Timekeeping Mode, press 

A

 to display the Tide Graph.

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Tide level (Tide Graph)

E-94

 To calibrate the temperature sensor

1. Take a reading with another measurement device to determine the 

exact current temperature.

2. With the watch in the Timekeeping Mode, press 

C

 to enter the 

Thermometer Mode.

3. Hold down 

A

 for at least two seconds.

 

SET Hold

 will fl ash on the display and then the temperature will 

fl ash. Keep 

A

 depressed until 

°C

 fl ashes.

4. Use 

D

 (+) and 

L

 (−) to calibrate the temperature value with the reading of another instrument.

 Each press of a button changes the temperature value in units of 0.1°C (0.2°F).

 To return the temperature to its uncalibrated value (

OFF

 setting), press 

D

 and 

L

 at the same 

time.

5. Press 

A

 to complete calibration and restart the temperature reading operation.

Thermometer Precautions

Air temperature measurements are affected by your body temperature (while you are wearing the watch), 
direct sunlight, and moisture. To achieve a more accurate temperature measurement, remove the watch 
from your wrist, place it in a well ventilated location out of direct sunlight, and wipe all moisture from the 
case. It takes approximately 20 to 30 minutes for the case of the watch to reach the actual surrounding 
temperature.

Water Temperature Measurement Precautions

Your body temperature has almost no effect on water temperature measurements. However, sudden 
changes in water temperature can take up to about fi ve minutes to be refl ected in temperature readings 
by the watch.

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E-93

Temperature

 Temperature is displayed in units of 0.1°C (or 0.2°F).

 The displayed temperature value changes to 

- -.-

 °C (or °F) if a measured temperature falls outside the 

range of –10.0°C to 60.0°C (14.0°F to 140.0°F). The temperature value will reappear as soon as the 
measured temperature is within the allowable range.

Display Units

You can select either Celsius (°C) or Fahrenheit (°F) for the displayed temperature value. See “To specify 
temperature and water depth display units” (page E-57).

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.

 Best temperature sensor calibration results are achieved when performed in water with a stable 

temperature.

E-92

 Taking Temperature Readings

Your watch can measure air temperature during normal daily use, and water temperature while diving.

To take temperature readings

Use 

C

 to select the Thermometer Mode (

TEMP

) as shown on page E-26.

 

TEMP

 will appear in the upper display and temperature measurement 

will start. After about one second, the measurement reading will 
appear in the lower display.

 The watch will continue to take temperature readings every second for 

60 minutes.

 The watch will return to the Timekeeping Mode after the reading 

operation is complete (60 minutes).

 Press 

D

 to restart temperature readings.

 Pressing 

C

 while a reading operation is in progress will stop the 

operation and enter the Tide/Moon Mode.

Diving (Diving Mode)

Pressing 

A

 while under water displays the current water temperature for 

about three seconds.

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Temperature

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E-91

 To specify standard time or daylight saving time (DST) for a city

1. In the World Time Mode, use 

D

 to scroll through the available city 

codes.

 Keep scrolling until the city code whose Standard Time/Daylight 

Saving Time setting you want to change is displayed.

2. Hold down 

A

 for at least two seconds.

 Keep 

A

 depressed until 

DST Hold on

 or 

DST Hold OFF

 starts to 

fl ash on the display.

 

DST Hold on

 means that summer time is enabled, and that the 

current time is advanced accordingly. 

DST Hold OFF

 means that 

summer time is disabled, and that the current time shows standard 
time.

 This toggles the city code you selected in step 1 between Daylight 

Saving Time (

DST

 indicator displayed) and standard time (

DST

 

indicator not displayed).

 Using the World Time Mode to change the DST setting of the 

city code that is selected as your Home City also will change the 
Timekeeping Mode time DST setting.

 Note that you cannot switch between standard time/daylight 

saving time (DST) while 

UTC

 is selected as the World Time City.

 Note that the standard time/daylight saving time (DST) setting 

affects only the currently selected time zone. Other time zones are 
not affected.

DST indicator

E-90

 Checking the Current Time in a Different Time Zone

You can use the World Time Mode to view the current time in one of 31 time zones (48 cities and the UTC 
time zone) around the globe. The city that is currently selected in the World Time Mode is called the 
“World Time City”.

To enter the World Time Mode

Use 

C

 to select the World Time Mode (

WT

) as shown on page E-26.

 One second after 

WT

 appears on the display, the city code of the 

currently selected World Time City will scroll once in the upper display. 
After that, the World Time City’s city code will be displayed in the upper 
display.

To view the time in another time zone

In the World Time Mode, use 

D

 to scroll through city codes.

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Currently selected 
Word Time City

Current timekeeping 
Mode time

Current time in the currently 
selected World Time City

E-89

To stop the alarm

Press any button.

Note

 The snooze alarm sounds up to seven times at intervals of about fi ve minutes.

 After the snooze alarm fi rst sounds, 

SNZ

 will fl ash on the display until the snooze alarm sounds all 

seven times or until it is canceled.

 The snooze alarm will be canceled when any of the following occurs while the 

SNZ

 indicator is fl ashing 

on the display.
– If you turn off the snooze alarm
– If you display the snooze alarm setting screen
– If you display the Timekeeping Mode setting screen
– If your Home City and World Time City are the same city, and you use the World Time Mode to 

change the summer time setting of your Home City

To test the alarm

 In the Alarm Mode, hold down 

D

. The alarm will sound as long as 

D

 is depressed.

E-88

To turn an alarm and the Hourly Time Signal on and off

1. In the Alarm Mode, use 

D

 to select an alarm or the Hourly Time Signal.

2. When the alarm or the Hourly Time Signal you want is selected, press 

A

 to turn it on and off.

 The alarm on indicator (when any alarm is on), snooze alarm 

indicator (when the snooze alarm is on), and the Hourly Time 
Signal on indicator (when the Hourly Time Signal is on) are shown 
on the display in all modes.

Alarm on indicator

Snooze alarm 
indicator

Hourly time signal 
on indicator

Operation Guide 3445

Summary of Contents for 3445

Page 1: ... To get ready for a receive operation page E 16 To set the time manually See Configuring Current Time and Date Settings Manually page E 32 The watch is now ready for use For details about the watch s radio controlled timekeeping feature see Radio Controlled Atomic Timekeeping page E 14 E 3 Things to check before using the watch 1 Check the battery power level Is H or M displayed for the battery pow...

Page 2: ...ns page E 125 E 11 Level Battery Power Indicator Function Status 4 CHG l ll l l l l l l l l l l l ll l Except for the current time and the CHG charge indicator all functions and display indicators disabled 5 All functions disabled The flashing LOW indicator at Level 3 L tells you that battery power is very low and that exposure to bright light for charging is required as soon as possible At Level 5...

Page 3: ...ect reception l ll l l l l l l l l l l l l l l l l ll E 19 If the current reception fails but a previous reception within the last 24 hours was successful the display shows the receive indicator and the ERR indicator If the ERR indicator only is displayed without the receive indicator it means that all of the receive operations over the past 24 hours have failed The watch will return to the Timeke...

Page 4: ...ic Dial The indication of the graphic dial is synced with the minutes and seconds of the current time and time measurements In the Timekeeping Mode and the World Time Mode segments appear in one second units After the 60th second segments disappear in one second units During diving log data display segments appear in one minute units After the 60th minute segments disappear in one minute units Whe...

Page 5: ...bearing for about 20 seconds while measuring water depth E 35 Using the Diving Functions Entering the Diving Mode and starting a dive causes the watch to create a log record and start measuring and recording dive time water depth and water temperature automatically After a dive is complete the watch also displays the surface time Important Charge the battery to at least Level 2 before using it for...

Page 6: ... 3 meters or greater is measured Water Depth and Water Pressure Underwater pressure increases along with the depth In the case of seawater Specific Gravity 1 025 water pressure increases one atmosphere 1 03kg cm2 with each 10 meter increase in depth The water depth sensor of your watch detects water pressure and the watch uses the relationship between water pressure and depth to display a seawater ...

Page 7: ...be operated while submerged L turns on illumination A displays water temperature D takes a direction reading and B registers a time stamp 10 What happens if I forgot to enter the Diving Mode before starting a dive If you enter the water and then enter the Diving Mode while under water at a depth of 1 5 meters or less the watch will not be able to perform 0 meter reset correctly which will cause a ...

Page 8: ...2 Use D to display the log record you want to delete Important Note that holding down A for more than five seconds in step 3 will delete all log records Once a record is deleted it cannot be recovered 3 Hold down A for about two seconds First CLEAR Hold will flash on the display After that CLEAR will stop flashing and remain display Release A as soon as CLEAR stops flashing Deleting a record displays ...

Page 9: ...clination correction You should perform calibration whenever direction readings produced by the watch do not match those of another reliable compass and before setting off on a dive Leave the watch on your wrist when performing figure 8 calibration When performing 3 point calibration remove the watch from your wrist l l l l l l l ll Desired bearing 12 o clock Bearing angle Diving Mode Screen E 67 U...

Page 10: ...s the direction angle for the stored reading along with a pointer that indicates the stored reading When you take digital compass readings while the Bearing Memory screen is displayed the direction angle of the current digital compass reading as read from the 12 o clock position of the watch and the stored Bearing Memory direction reading will both be shown To store a direction angle reading in Be...

Page 11: ... the display the display will change to show the countdown time hours To specify the countdown start time 1 Enter the Countdown Timer Mode If a countdown is in progress indicated by the seconds counting down press D to stop it and then press A to reset to the current countdown start time If a countdown is paused press A to reset to the current countdown start time 2 Hold down A for at least two se...

Page 12: ...ment reading will appear in the lower display The watch will continue to take temperature readings every second for 60 minutes The watch will return to the Timekeeping Mode after the reading operation is complete 60 minutes Press D to restart temperature readings Pressing C while a reading operation is in progress will stop the operation and enter the Tide Moon Mode Diving Diving Mode Pressing A w...

Page 13: ...e Moon Mode as shown on page E 26 This displays the Tide Screen which shows information in the following sequence After TIDE appears on the display the Tide Graph will display the tide level at 6 00 a m on the current day 2 Use D to specify the time you want Each press of D advances the time by one hour causing the Tide Graph to change accordingly Holding down D scrolls the time at high speed If y...

Page 14: ...ounding While a compass reading operation is in progress While calibrating in the Digital Compass Mode While a receive operation is in progress in the Receive Mode While measuring Tide Moon values While in a sensor mode an auto light switch operation is performed after a sensor reading To enable or disable the auto light switch In the Timekeeping Mode hold down L for at least three seconds to togg...

Page 15: ...to be reflected in temperature readings by the watch E 115 While performing 3 point calibration the watch returns to standby for calibration of Point 1 The calibration procedure needs to be restarted because an error occurred during calibration or for some other reason Perform calibration of Point 1 again ERR appears after 3 point calibration is complete If ERR appears it could mean there is someth...

Page 16: ...as one is successful Manual receive Receive Mode Receivable Time Calibration Signals Mainflingen Germany Call Sign DCF77 Frequency 77 5 kHz Anthorn England Call Sign MSF Frequency 60 0 kHz Fort Collins Colorado the United States Call Sign WWVB Frequency 60 0 kHz Fukushima Japan Call Sign JJY Frequency 40 0 kHz Fukuoka Saga Japan Call Sign JJY Frequency 60 0 kHz Shangqiu City Henan Province China Ca...

Page 17: ...determined by each individual country L 2 City Code Table City Code City UTC Offset GMT Differential PPG Pago Pago 11 HNL Honolulu 10 ANC Anchorage 9 YVR Vancouver 8 LAX Los Angeles YEA Edmonton 7 DEN Denver MEX Mexico City 6 CHI Chicago NYC New York 5 YHZ Halifax 4 YYT St Johns 3 5 SCL Santiago 3 RIO Rio De Janeiro FEN Fernando de Noronha 2 RAI Praia 1 City Code City UTC Offset GMT Differential U...

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