Casio 3445 Operation Manual Download Page 5

E-39

After Diving

While on a boat or otherwise on the water surface (at a depth of 1.4 meters or less), hold down 

C

 for 

three seconds. 

Hold TIME

 will appear on the display and then disappear. Keep 

C

 depressed until it 

disappears.

 The watch enters the Timekeeping Mode.

 Holding down 

C

 will not return to the Timekeeping Mode while you are diving (at a depth of 1.5 meters 

or greater). This prevents unintentional exiting of the Diving Mode while diving.

Repeat diving

 After completing one dive, temporarily enter the Timekeeping Mode and then re-enter the Diving Mode 

before the next dive.

Auto Timekeeping Mode Return

Before diving

 If you leave the watch in the Diving Mode for about 30 minutes while on the water surface (Depth: 0 

meters), it will automatically return to the Timekeeping Mode.

 When on the water surface for a long period in order to move to another location or for some other 

reason, make sure you confi rm that the watch is in the Diving Mode before diving again.

During a Dive

 If a dive time exceeds six hours, the watch will automatically switch to the Timekeeping Mode and 

record a dive time of 6:00 up to that point.

After diving

 If more than 10 minutes of surface time elapse at a depth of 1.4 meters or less, the watch will enter the 

Timekeeping Mode automatically.

E-38

Entering the successive dive wait state starts measurement of the elapsed surface time.

 If the surface time exceeds 10 minutes, the watch will automatically enter the Timekeeping Mode and 

stop log memory recording.

 Even though the watch enters the Timekeeping Mode, elapsed surface time measurement continues.

When the watch detects submersion to a depth greater than 1.5 meters, it will exit the successive 
dive wait state and resume dive time measurement and log memory recording.

 The watch will reset the surface time to zero when it detects resumption of a dive with a depth of 1.5 

meters or greater.

Viewing Log Records

While in the successive dive wait state or pre-dive wait state*, press 

A

.

 This will display the diving log data for your previous dive for about 

three seconds.

 You can also press 

C

 while a log record is displayed to exit the log 

record screen.

 The surface time display will show 

- : - -

 if more than 48 hours have 

elapsed.

* The pre-dive wait state is at a depth of 0 to 1.4 meters before a dive 

starts.

lllllllll 

Previous dive time

Surface time

Previous dive 
maximum depth

E-37

ll

ll

llll

lll 

ll

ll

llll

lll 

lllllllll 

lll

l lll

lll

l lll

ll 

lll

l lll

ll 

Diving Mode

Bearing

Water temperature 

display

Dive time

Water 
temperature

Bearing

Water depth

D

A

C

D

C

A

Successive Dive Wait State (Depth: 1.4 meters or less) 

When the watch detects a depth of 1.4 meters or less while diving, it enters the successive dive wait state 
described below.

 

DIVE TIME

 fl ashes on the display and elapsed dive time measurement (page E-44) is paused.

 Log memory recording is paused.

 The ascent rate alarm (page E-55) is enabled

 Even at a depth of 1.4 meters or less, dive measurement screen remains on the display.

E-36

Timekeeping Mode

Diving Mode

About 3 seconds

C

Water Depth Auto 0-meter Reset

Enter the Diving Mode before diving. Ambient pressure at the time the watch enters the Diving Mode is set 
as the 0-meter depth (page E-41). After that depth, water temperature, and dive time measurements are 
performed automatically.

Auto Measurement and Log Data Memory During a Dive

While in the Diving Mode, the watch will detect when water depth is 1.5 meters or greater at the start of a 
dive, and automatically start measuring the elapsed dive time. The dive start time is also recorded in 
watch memory.

To display water temperature

 Pressing 

A

 while under water displays the current water temperature for about three seconds.

To take a direction reading

 While in the Diving Mode, pressing 

D

 will display your 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 diving.

 Before diving, enter the Diving Mode while on a boat or in another location outside the water.

 Even if a sensor reading operation results in an error, the current time and dive time will continue to be 

displayed.

 Low battery power will cause sensor operations to be disabled, but the current time and dive time will 

continue to be displayed.

Note

 For details about the type of data that is measured and measuring ranges, see “Diving Function 

Measurement Data and Ranges” (page E-43).

Before Diving

While on a boat or in any other location outside the water, hold down 

C

 for about three seconds until 

DIVE

 appears on the display.

 This enters the Diving Mode. Refer to page E-25 for information about navigating between modes.

E-34

Screen

To do this:

Do this:

Change the hour or minutes

Use 

D

 (+) and 

L

 (–).

Change the year, month, or day

4. After all of the settings are the way you want, press 

A

 to exit the setting screen.

Note

 For information about selecting a Home City and confi guring the DST setting, see “Confi guring 

Home City Settings” (page E-30).

 While the 12-hour format is selected for timekeeping, a 

P

 (PM) indicator will appear for times from 

noon to 11:59 p.m. No indicator appears for times from midnight to 11:59 a.m. With 24-hour format, 
time is displayed from 0:00 to 23:59, without any 

P

 (PM) indicator.

 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 rechargeable battery replaced or after power drops to Level 5 (page E-10).

 The day of the week changes automatically when the date changes.

 Refer to the pages shown below for more information on Timekeeping Mode settings.

– Button Operation Tone: “To enable or disable the button operation tone” (page E-110)
– Illumination Duration: “To change the illumination duration” (page E-106)
– Power Saving: “To enable or disable Power Saving” (page E-111)
– Temperature Unit, Water Depth Unit (for a city code other than 

TYO

): “To specify temperature and 

water depth display units” (page E-57)

E-33

2. Press 

C

 to move the fl ashing in the sequence shown below to select the other settings.

City Code

DST

Seconds

Hour

Minutes

Year

Month

Day

12/24-Hour 
Format

Button Operation 
Tone

Illumination 
Duration

Power 
Saving

Temperature 
Unit

Water Depth 
Unit

 The following steps explain how to confi gure timekeeping settings only.

 Note that the Water Depth Unit and Temperature Unit settings will not appear when Tokyo is 

selected as your Home City.

3. When the timekeeping setting you want to change is fl ashing, use 

D

 and/or 

L

 to change it as 

described below.

Screen

To do this:

Do this:

Change the city code

Use 

D

 (East) and 

L

 (West).

Cycle between Auto DST (

AUTO

), Standard Time 

(

OFF

) and Daylight Saving Time (

ON

).

Press 

D

.

Toggle between 12-hour (

12H

) and 24-hour (

24H

timekeeping.

Press 

D

.

Reset the seconds to 

00

(If the current seconds count is between 30 and 59, 
one is added to the minute count).

Press 

D

.

E-32

 Confi guring Current Time and Date Settings Manually

You can confi gure current time and date settings manually when the watch is unable to receive a time 
calibration signal.

 To change the current time and date settings manually

1. In the Timekeeping Mode, hold down 

A

 for at least two seconds. 

SET

 

will fl ash in the upper display and 

Hold

 will fl ash in the lower display. 

Next, 

SET

 will fl ash in the middle display and then 

CITY

 will appear in 

the upper display. Keep 

A

 depressed until this happens.

 The city code and the name of the currently selected city will scroll 

across the display.

ll

l

l l

l l l l ll

ll

ll

City code

PM indicator

Hour : Minutes

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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