Casio 3445 Operation Manual

MO1606-EA

Operation Guide 3445

Congratulations upon your selection of this CASIO watch.

Applications

The built-in sensors of this watch measure direction, barometric pressure, temperature, and water depth. Measured values are then shown on the display. Such features make this watch useful when diving or when engaging in other such outdoor activities.

• The measurement functions built into this watch are not intended for taking measurements that

require professional or industrial precision. Values produced by this watch should be considered as reasonable representations only. When engaging in diving or other activities in which losing your way can create a dangerous or

•

life-threatening situation, always use a second underwater compass to conﬁ rm direction readings.

• Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss

suffered by you or any third party arising through the use of your watch or its malfunction.

Warning !

About This Manual

• Button operations are indicated using the letters shown in the

illustration.

• Note that the product illustrations in this manual are intended for

reference only, and so the actual product may appear somewhat different than depicted by an illustration.

ENGLISH

Important!

• The watch’s water depth measurement function is intended to be used as a backup depth gauge.

• Whenever you use the digital compass of this watch for serious diving or other activities, be sure to

always take along another underwater compass to conﬁ digital compass of this watch are different from those of the other compass, perform directional calibration of the digital compass to ensure more accurate readings.

• Direction readings and digital compass calibration will not be possible if the watch is in the vicinity of a

permanent magnet (magnetic accessory, etc.), metal objects, high-voltage wires, aerial wires, or electrical household appliances (TV, computer, cellphone, etc.)

rm readings. If the readings produced by the

Things to check before using the watch

1. Check the battery power level.

Is “H” or “M” displayed for the battery power indicator (page E-10)?

Does any one of the following conditions exist?

• Battery power indicator shows “L” and “

display.

CHG

• “

” is ﬂ ashing on the display.

• The face is blank.

Power is low.

where it is exposed to light. For details, see “Charging the Watch” (page E-9).

Charge the watch by placing it in a location

YES

LOW

” is ﬂ

ashing on the

Battery power indicator

YES

The watch is charged sufﬁ ciently. For details about charging, see “Charging the Watch” (page E-9).

Go to step 2.

E-1

E-2

2. Check the Home City and the daylight saving time (DST) setting.

Use the procedure under “To conﬁ gure Home City and summer time settings” (page E-30) to conﬁ gure your Home City and daylight saving time settings.

Important!

• Proper time calibration signal reception, and World Time Mode data depend on correct Home City,

time, and date settings in the Timekeeping Mode. Make sure you conﬁ

3. Set the current time.

• To set the time using a time calibration signal

See “To get ready for a receive operation” (page E-16).

• To set the time manually

See “Conﬁ guring 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-4

Using the Diving Functions ……………………………………………………………………………… E-35

To display water temperature ……………………………………………………………………… E-36 To take a direction reading ………………………………………………………………………… E-36 To display the surface time ………………………………………………………………………… E-41 To reset 0-meter depth manually ………………………………………………………………… E-41

Specifying Temperature and Water Depth Display Units …………………………………………… E-57

To specify temperature and water depth display units ………………………………………… E-57

Viewing Diving Log Records …………………………………………………………………………… E-59

To view log records ………………………………………………………………………………… E-59 To delete a speciﬁ c log record ……………………………………………………………………… E-61 To delete all log records …………………………………………………………………………… E-62

Taking Direction Readings ……………………………………………………………………………… E-64

To take a direction reading ………………………………………………………………………… E-64 To perform ﬁ gure 8 calibration ……………………………………………………………………… E-70 To perform 3-point calibration ……………………………………………………………………… E-72 To perform magnetic declination correction ……………………………………………………… E-75 To store a direction angle reading in Bearing Memory ………………………………………… E-76

Viewing Time Stamp Records (Time Recall) ………………………………………………………… E-79

To create a time stamp record ……………………………………………………………………… E-79 To view time records ………………………………………………………………………………… E-79 To delete a speciﬁ c time stamp record …………………………………………………………… E-81 To delete all time stamp records …………………………………………………………………… E-81

E-6

gure these settings correctly.

Contents

About This Manual …………………………………………………………………………………………… E-2

Things to check before using the watch ………………………………………………………………… E-3

Charging the Watch …………………………………………………………………………………………… E-9

To recover from the sleep state …………………………………………………………………… E-13

Radio Controlled Atomic Timekeeping ………………………………………………………………… E-14

To get ready for a receive operation ……………………………………………………………… E-16 To perform manual receive ………………………………………………………………………… E-18 To check the latest signal reception results ……………………………………………………… E-21 To turn auto receive on or off ……………………………………………………………………… E-21

Mode Reference Guide …………………………………………………………………………………… E-23

Timekeeping ………………………………………………………………………………………………… E-29

Conﬁ guring Home City Settings ………………………………………………………………………… E-30

To conﬁ gure Home City and summer time settings ……………………………………………… E-30

Conﬁ guring Current Time and Date Settings Manually ……………………………………………… E-32

To change the current time and date settings manually ………………………………………… E-32

Using the Stopwatch ……………………………………………………………………………………… E-82

To enter the Stopwatch Mode ……………………………………………………………………… E-82 To perform an elapsed time operation …………………………………………………………… E-82 To pause at a split time ……………………………………………………………………………… E-82 To measure two ﬁ nishes …………………………………………………………………………… E-83

Using the Countdown Timer ……………………………………………………………………………… E-84

To enter the Countdown Timer Mode ……………………………………………………………… E-84 To specify the countdown start time ……………………………………………………………… E-84 To perform a countdown timer operation ………………………………………………………… E-85 To stop the alarm …………………………………………………………………………………… E-85

Using the Alarm …………………………………………………………………………………………… E-86

To enter the Alarm Mode …………………………………………………………………………… E-86 To set an alarm time ………………………………………………………………………………… E-87 To turn an alarm and the Hourly Time Signal on and off………………………………………… E-88 To stop the alarm …………………………………………………………………………………… E-89 To test the alarm …………………………………………………………………………………… E-89

Checking the Current Time in a Different Time Zone ………………………………………………… E-90

To enter the World Time Mode …………………………………………………………………… E-90 To view the time in another time zone …………………………………………………………… E-90 To specify standard time or daylight saving time (DST) for a city ……………………………… E-91

E-3

E-5

E-7

Operation Guide 3445

Taking Temperature Readings …………………………………………………………………………… E-92

To take temperature readings ……………………………………………………………………… E-92 To calibrate the temperature sensor ……………………………………………………………… E-94

Checking the Tide Level, Moon Phase, and Moon Age (Tide/Moon) ……………………………… E-95

To view the current tide level ……………………………………………………………………… E-95 To view the current moon phase …………………………………………………………………… E-97 To view the current Moon age ……………………………………………………………………… E-97 To view the tide level at a different time today …………………………………………………… E-100 To view the tide level, Moon phase, and Moon age for a speciﬁ c date and time …………… E-100 To calibrate the high tide time ……………………………………………………………………… E-102 To specify Northern Hemisphere View or Southern Hemisphere View Moon Phase ………… E-104

Illumination ………………………………………………………………………………………………… E-106

To turn on illumination manually …………………………………………………………………… E-106 To change the illumination duration ……………………………………………………………… E-106 To enable or disable the auto light switch ………………………………………………………… E-108

Other Settings ……………………………………………………………………………………………… E-110

To enable or disable the button operation tone ………………………………………………… E-110 To enable or disable Power Saving ……………………………………………………………… E-111

Troubleshooting …………………………………………………………………………………………… E-112

Speciﬁ cations ……………………………………………………………………………………………… E-122

E-8

Important!

• Allowing the watch to become very hot can cause its liquid crystal display to black out. The

appearance of the LCD should become normal again when the watch returns to a lower temperature.

• Turn on the watch’s Power Saving function (page E-13) and keep it in an area normally exposed to bright

light when storing it for long periods. This helps to ensure that power does not run down.

• Storing the watch for long periods in an area where there is no light or wearing it in such a way that it is

blocked from exposure to light can cause power to run down. Expose the watch to bright light whenever possible.

Power Levels

You can get an idea of the watch’s power level by observing the battery power indicator on the display.

Battery power indicator

Level Battery Power Indicator Function Status

(H)

(M)

All functions enabled. Before using the Diving Mode, charge the battery at least to Level 2.

Auto and manual receive, illumination, beeper, Diving Mode, Digital Compass Mode, Thermometer Mode, and Tide/Moon Mode operation disabled.

E-10

(L)

Charging the Watch

The face of the watch is a solar panel that generates power from light. The generated power charges a built-in rechargeable battery, which powers watch operations. The watch charges whenever it is exposed to light.

Charging Guide

Whenever you are not wearing the watch, leave it in a location where it is exposed to light.

• Best charging performance is

achieved by exposing the watch to the strongest light available.

Warning! Leaving the watch in bright light for charging can cause it to become quite hot. Take care when handling the watch to avoid burn injury. The watch can become particularly hot when exposed to the following conditions for long periods.

• On the dashboard of a car parked in direct sunlight

• Too close to an incandescent lamp

• Under direct sunlight

Level Battery Power Indicator Function Status

(CHG)

5 – – – All functions disabled.

• The ﬂ ashing

bright light for charging is required as soon as possible.

• At Level 5, all functions are disabled and settings return to their initial factory defaults. Once the battery

reaches Level 2 (M) after falling to Level 5, reconﬁ

• Display indicators reappear as soon as the battery is charged from Level 5 to Level 2 (M).

• Leaving the watch exposed to direct sunlight or some other very strong light source can cause the

battery power indicator to show a reading temporarily that is higher than the actual battery level. The correct battery level should be indicated after a few minutes.

• All data stored in memory is deleted, and the current time and all other settings return to their initial

factory defaults whenever battery power drops to Level 5 and when you have the battery replaced.

Power Recovery Mode

• Performing multiple sensor, illumination, or beeper operations during a short period may cause all of

the battery power indicators (H, M, and L) to start ﬂ ashing on the display. This indicates that the watch is in the power recovery mode. Illumination, alarm, countdown timer alarm, hourly time signal, and sensor operations will be disabled until battery power recovers.

• Battery power will recover in about 15 minutes. At this time, the battery power indicators (H, M, L) will

stop ﬂ

LOW

indicator at Level 3 (L) tells you that battery power is very low, and that exposure to

ashing. This indicates that the functions listed above are enabled again.

Except for the current time and the (charge) indicator, all functions and display indicators disabled.

gure the current time, date, and other settings.

When wearing the watch, make sure that its face is not blocked from light by the sleeve of your clothing.

• The watch may enter a sleep state

(page E-13) if its face is blocked by your sleeve even only partially.

CHG

E-9

E-11

• If all of the battery power indicators (H, M, L) are ﬂ ashing and the

ﬂ ashing, it means the battery level is very low. Expose the watch to bright light as soon as possible.

• Even if battery power is at Level 1 (H) or Level 2 (M), the Digital Compass Mode, Thermometer Mode,

or Diving Mode sensor may be disabled if there is not enough voltage available to power it sufﬁ This is indicated when all of the battery power indicators (H, M, L) are ﬂ ashing.

• Frequent ﬂ ashing of all of the battery power indicators (H, M, L) probably means that remaining battery

power is low. Leave the watch in bright light to allow it to charge.

CHG

(charge) indicator also is

Charging Times

Daily

Exposure Level (Brightness)

Outdoor sunlight (50,000 lux) 5 min. 2 hours 14 hours 4 hours

Sunlight through a window (10,000 lux)

Daylight through a window on a cloudy day (5,000 lux)

Indoor ﬂ uorescent lighting (500 lux) 8 hours 142 hours – – – – – –

*1 Approximate amount of exposure time required each day to generate enough power for normal daily

operation.

*2 Approximate amount of exposure time (in hours) required to take power from one level to the next.

• The above exposure times all are for reference only. Actual exposure times depend on lighting

conditions.

• For details about the operating time and daily operating conditions, see the “Power Supply” section of

cations (page E-125).

the Speciﬁ

E-12

Operation

24 min. 6 hours 71 hours 19 hours

48 min. 11 hours 143 hours 39 hours

Level 5 Level 4 Level 3 Level 2 Level 1

Level Change *2

Radio Controlled Atomic Timekeeping

This watch receives a time calibration signal and updates its time setting accordingly. However, when using the watch outside of areas covered by time calibration signals, you will have to adjust the settings manually as required. See “Conﬁ guring Current Time and Date Settings Manually” (page E-32) for more information. This section explains how the watch updates its time settings when the city code selected as the Home City is in Japan, North America, Europe, or China, and is one that supports time calibration signal reception.

If your Home City Code setting is this:

LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW Anthorn (England), Mainﬂ ingen (Germany)

HKG, BJS Shangqiu City (China)

TPE, SEL, TYO Fukushima (Japan), Fukuoka/Saga (Japan)

HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, NYC, YHZ, YYT

Important!

• The areas covered by

certain conditions may cause reception problems.

HKG

• When

time calibration signal. You need to switch manually between standard time and daylight saving time (DST) if required. See “To conﬁ about how to do this.

E-14

MOW, HNL

and

BJS

is selected as the Home City, only the time and date are adjusted according to the

gure Home City and summer time settings” (page E-30) for information

The watch can receive the signal from the transmitter located here:

Fort Collins, Colorado (United States)

ANC

are quite far from the calibration signal transmitters, so

ciently.

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.

• For information about enabling and disabling power saving, see “To enable or disable Power Saving”

(page E-111).

• There actually are two sleep state levels: “display sleep” and “function sleep”.

Elapsed Time in Dark Display Operation

60 to 70 minutes (display sleep) Blank, with PS ﬂ ashing Display is off, but all functions are enabled.

6 or 7 days (function sleep) Blank, with PS not ﬂ ashing

• The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is already in a sleep

state when 6:00 AM arrives, however, it will remain in the sleep state.

• The watch will not enter a sleep state while it is in the Stopwatch Mode, Countdown Timer Mode, or

Diving Mode.

To recover from the sleep state

Move the watch to a well-lit area, press any button, or angle the watch towards your face for reading (page E-107).

All functions except for timekeeping and stopwatch elapsed time measurement are disabled.

E-13

Approximate Reception Ranges

UK and German Signals

Anthorn

500 kilometers

1,500 kilometers

The Anthorn signal is receivable within this area

Japanese Signals Chinese Signal

500 kilometers

Fukuoka/Saga

Fukushima

Signals are receivable in the Taiwan area when reception conditions are good.

Mainﬂ ingen

1,000 kilometers

North American Signal

2,000 miles (3,000 kilometers)

600 miles (1,000 kilometers)

For the Honolulu and Anchorage time zones, the signal can be received when reception conditions are favorable.

500 kilometers

1,500 kilometers

Fort Collins

Changchun

Beijing Shangqiu Shanghai Chengdu Hong Kong

E-15

Operation Guide 3445

• Even when the watch is within range of a transmitter, signal reception may be impossible due to the

effects of geographic contours, structures, weather, the time of year, the time of day, radio interference, etc. The signal becomes weaker at distances of approximately 500 kilometers, which means that the inﬂ

uence of the conditions listed above becomes even greater.

• Signal reception may not be possible at the distances noted below during certain times of the year or

day. Radio interference may also cause problems with reception.

ingen (Germany) or Anthorn (England) transmitters: 500 kilometers (310 miles)

Mainﬂ Fort Collins (United States) transmitter: 600 miles (1,000 kilometers) Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles) Shangqiu (China) transmitter: 500 kilometers (310 miles)

• As of January 2016, China does not use Daylight Saving Time (DST). If China does go to the Daylight

Saving Time system in the future, some functions of this watch may no longer operate correctly.

To get ready for a receive operation

1. Conﬁ

rm that the watch is in the Timekeeping Mode or World Time Mode. If it isn’t, use C to enter the

Timekeeping Mode or World Time Mode (page E-26).

2. The antenna of this watch is located on its 12 o’clock side. Position the watch with 12 o’clock facing

towards a window as shown in the nearby illustration. Make sure there are no metal objects nearby.

12 o’clock

E-16

• You can use the procedure under “To turn auto receive on or off” (page E-21) to enable or disable auto

receive.

To perform manual receive

Receiving

Receive indicator

Receive successful

• Signal rece ption normally is bet ter at night.

• The receive o peration takes from t wo to ten minutes, but

n some case s it can take as long as 20 mi nutes. Take care that you do n ot perform any but ton operation or move the watch dur ing this time.

1. Use C to select the Receive Mode (

• One secon d after

will scroll acros s the upper display.

2. Hold down D until disappears.

• A signal level indi cator (L1, L2, o

on the display af ter reception starts. D o not allow the watch to move and do not p erform any button o peration until GET or ERR appears on t he display.

• If the receive o peration is successf ul, the reception date and ti me

ppear on the d isplay, along with the GET indicator.

a The watch will ret urn to the Timekeeping M ode if you press any button or i f you do not perform any bu tton operation for ab out two or three minutes.

R/C

RC Hold

R/C

ppears on th e display, the text RECEIVED

) as shown on page E-26.

appears on the display and then

r L3, see page E-20) wi ll appear

• Signal recept ion may be difﬁ cult or even imp ossible under the con ditions described bel ow.

Inside or among buildings

3. What you should do next depends on whether you are using auto receive or manual receive.

• Auto receive: Leave t he watch over night in the locat ion you selected in step 2. Se e “Auto R eceive”

elow for detail s.

• Manual rec eive: Perform the operat ion under “To perform ma nual receive” on page E-18.

Auto Receive

• With auto receive, the watch performs the receive operation each day automatically up to six times (up

ve times for the Chinese calibration signal) between the hours of midnight and 5 a.m. (according to

to ﬁ the Timekeeping Mode time). When any receive operation is successful, none of the other receive operations for that day are performed.

• When a calibration time is reached, the watch will perform the receive operation only if it is in the

Timekeeping Mode or World Time Mode. The receive operation is not performed if a calibration time is reached while you are conﬁ

Receive failed

Inside a vehicle

Near household appliances, ofﬁ ce equipment, or a mobile phone

guring settings.

• If the current rec eption fails but a previous rec eption (within the

last 24 hours) was su ccessful, the display sh ows the receive indicator and t he ERR indicator. If the ERR indicator only is displayed (with out the receive indicator), it m eans that all of the receive opera tions over the past 24 hours have fa iled. The watch will ret urn to the Timekeeping M ode without chan ging the time set ting if you press any butt on or if you do not perfor m any button op eration for about two o r three minutes.

Note

• You can interrupt a tim e calibration signal rece ption operation by

ressing any but ton.

Near a construction site, airport

Near high-tension power lines

Among or behind mountains

E-17

E-18

Signal Level Indicator

E-20

Radio-controlled Atomic Timekeeping Precautions

• Strong electrostatic charge can result in the wrong time setting.

• Even if a receive operation is successful, certain conditions can cause the time setting to be off by up

to one second.

• The watch is designed to update the date and day of the week automatically for the period January 1,

2000 to December 31, 2099. Updating of the date by signal reception will no longer be performed starting from January 1, 2100.

• If you are in an area where signal reception is not possible, the watch keeps time with the precision

noted in “Speciﬁ

• The receive operation is disabled under any of the following conditions.

– While the charge level is low (3 or lower) (page E-10), or while the watch is in the power recovery mode

(page E-11) – When the watch is in the function sleep state (“Power Saving”, page E-13) – While the watch is in the Diving Mode – While a water depth measurement, direction, or temperature reading operation is in progress – While a countdown timer operation is in progress (page E-84)

• A receive operation is cancelled if an alarm sounds while it is being performed.

• The Home City setting reverts to the initial default of

drops to Level 5 or when you have the rechargeable battery replaced. If this happens, change the Home City to the setting you want (page E-30) .

E-22

cations”.

During manual receive, the signal level indicator displays the signal level as shown below.

Weak (Unstable) Strong (Stable)

The level indication will change in accordance with reception conditions while reception is being performed. As you watch the signal level indicator, keep the watch in a location that best maintains stable reception.

• Even under optimum reception conditions, it can take about 10

seconds for reception to stabilize.

• Note that weather, the time of day, surroundings, and other factors all

can affect reception.

TYO

(Tokyo) whenever the battery power level

To check the latest signal reception results

To turn auto receive on or off

On/Off status

Enter the Receive Mode (page E-26).

• When receive is successful, the display shows the time and date that

receive was successful. reception operations were successful.

• To return to the Timekeeping Mode, press C.

1. Enter the Receive Mode (page E-26).

2. Hold down A for at least two seconds. First,

display. After that, current auto receive setting (On or display. Keep A depressed until the the setting screen.

• Note that the s etting screen will not a ppear if the currently sel ected

ome City is o ne that does not suppo rt time calibration re ception.

3. Press D to toggle auto receive between on (On) and off (

4. Press A to exit the setting screen.

• A successf ul receive operation is in dicated by a G i

of the graphic di al. Even if a receive operation fa ils, a G will be displayed in the c enter of the graphic dial if a previ ous receive operation w ithin the past 24 hours was su ccessful.

- : - -, - - - -

indicates that none of the

AUTO

will appear in the upper display and the

SET Hold

OFF

) will appear in the lower

AUTO

screen appears. This is

Mode Reference Guide

Your watch has 12 “modes”. The mode you should select depends on what you want to do.

To do this: Enter this mode: See:

• View the current date in the Home City

• Conﬁ gure Home City and daylight saving time (DST) settings

• Conﬁ gure time and date settings manually

• Take dive time, water depth, compass, or water temperature readings Diving Mode E-35

• Determine your current bearing or the direction from your current

location to a destination

• Recall dive start time, dive time, maximum depth, low water temperature

data

• Recall time stamp records created in the Timekeeping Mode or in the

measurement modes

• Use the stopwatch to measure elapsed time Stopwatch Mode E-82

• Use the countdown timer Countdown Timer Mode E-84

• Set an alarm time Alarm Mode E-86

• View the current time in one of 48 cities (31 time zones) +UTC around

the globe

• Display the temperature at your current location

• Measure temperature

• View tide levels (Tide Graph), the Moon shape (Moon phase) and Moon

age for a speciﬁ

ed date

Timekeeping Mode

Digital Compass Mode

Diving Log Mode

Time Recall Mode

World Time Mode

Thermometer Mode

Tide/Moon Mode E-95

will appear on

OFF

n the center

E-29

E-64

E-59

E-79

E-90

E-92

E-19

E-21

E-23

Operation Guide 3445

To do this: Enter this mode: See:

• Perform a manual time calibration signal receive operation

• Check whether the last receive operation was successful

• Conﬁ gure auto receive settings

E-24

Each press of C cycles through modes in the sequence shown below.

Timekeeping Mode

Receive Mode

General Functions (All Modes)

The functions and operations described in this section can be used in all of the modes.

Direct Timekeeping Mode Access

• To enter the Timekeeping Mode from any mode besides the Diving Mode, hold down C for about one

second.

E-26

Diving Log Mode

Tide/Moon Mode

Time Recall Mode

Thermometer

Mode

Receive Mode

Stopwatch Mode

World Time Mode

E-18

Countdown Timer

Mode

Alarm Mode

Selecting a Mode

• The illustration below shows which buttons you need to press to navigate between modes.

Use the button operations shown below to navigate between the Timekeeping Mode, Diving Mode, and Digital Compass Mode. For information about navigating to other modes, see page E-26.

Important!

• You can enter the Diving Mode from any mode.

• To enter the Digital Compass Mode, ﬁ rst enter the Timekeeping Mode.

About three

*1 On a boat or in any other location outside the water, hold down C for about three seconds. *2 At a depth of 1.4 meters or less (on a boat, etc.), hold down C for about three seconds.

Auto Return Features

• The watch will automatically return to the Timekeeping Mode if you do not perform any button operation

for a particular amount of time in each mode.

Mode Name Approximate Elapsed Time

Diving Log, Time Recall, Tide/Moon, Alarm, Receive 3 minutes

Thermometer 1 hour

Setting screen (digital setting ﬂ ashing) 3 minutes

Digital Compass 1 minute

Diving (underwater) 6 hours

Diving (on water surface, before diving) 30 minutes

Diving (on water surface, after diving) 10 minutes

Initial Screens

When you enter the Alarm, World Time, or Digital Compass Mode, the data you were viewing when you last exited the mode appears ﬁ rst.

Scrolling

The D and L buttons are used on the setting screen to scroll through data on the display. In most cases, holding down these buttons during a scroll operation will scroll through the data at high speed.

seconds

About three seconds

Diving ModeDigital Compass ModeTimekeeping Mode

E-25

E-27

Graphic Dial

The indication of the graphic dial is synced with the minutes and seconds of the current time and time measurements.

E-28

• 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.

• When measuring a dive time in the Diving Mode, and when measuring time in the

Stopwatch Mode and Timer Mode, segments ﬂ

60th minute, segments disappear in one-minute units.

ash in one-minute units. After the

Conﬁ guring Home City Settings

There are two Home City settings: actually selecting the Home City and selecting either standard time or daylight saving time (DST).

To conﬁ gure Home City and summer time settings

PM indicator

E-30

Hour : Minutes

DST indicator

1. In the Timekeeping Mode, hold down A for at least two seconds. will ﬂ ash in the upper display and

SET

Next,

will ﬂ ash in the middle display and then

the upper display. Keep A depressed until this happens.

• The city c ode and the name of the cur rently selected city will s croll

cross the display.

• The watch will exi t the setting mode auto matically if you do not

erform any o peration for about t wo or three minutes.

City code

Seconds

• For detail s about city codes, s ee the “City Code Table” at the b ack

this manual.

2. Use D (East) and L (West) to scroll through the available city codes.

• Keep scrolling u ntil the city code you wa nt to select as your Home

Cit

y is displayed.

3. Press C to display the DST setting screen.

Use D to cycle through the DST settings in the sequence shown below.

AUTO

Auto DST (

) DST off (

Hold

will ﬂ ash in the lower display.

OFF

) DST on (ON)

CITY

SET

will appear in

Timekeeping

Seconds

TIME

) to set and view the current time and date.

Day

Tide Graph

Use the Timekeeping Mode (

• Each press of A in the Timekeeping Mode will change screen contents as shown below.

Important!

• Elapsed surface time measurement starts automatically after a dive is complete.

• Elapsed surface time measurement ends 48 hours following dive completion.

Day of the Week/Date Screen Tide Graph Surface Time

Day of week

Hour :

Minutes

indicator

* Not displayed after 48 hours following dive completion.

• The Auto DS T (AUTO) setting will be availa ble only when a city cod e that supports time c alibration

signal recepti on (page E-14) is s elected as the Home Cit y. Whi le Auto DST is selected, the D ST setting will be change d automatically in acco rdance with time calibrati on signal data.

• Note that you c annot switch between s tandard time and daylight s aving time (DST) whi le UTC is

elected as you r Home City.

5. After all of the settings are the way you want, press A to exit the setting screen.

• Daylight Savi ng Time is turned on whe n the DST indicator is on the display.

Note

• After you sp ecify a city code, th e watch will use UTC* offse ts in the World Time Mod e to calculate

the current tim e for other time zones bas ed on the current time in you r Home City.

* Coordinated Universal Time, the world-wide scientiﬁ c standard of timekeeping.

The reference point for UTC is Greenwich, England.

• Selecting s ome city codes auto matically makes it pos sible for the watch to receive the t ime

alibration sig nal for the correspondin g area. See page E-14 for details.

E-29

E-31

Operation Guide 3445

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

City code

Hour : Minutes

PM indicator

E-32

Screen To do this: Do this:

4. After all of the settings are the way you want, press A to exit the setting screen.

Note

• For informa tion about selectin g a Home City and conﬁ gur ing the DST setting, s ee “Conﬁ gu ring

ome City S ettings” (page E-3 0).

• While the 12- hour format is selected fo r timekeeping, a P (

noon to 11:59 p.m. No indicato r appears for times from m idnight to 11:59 a .m. With 24-hour for mat, time is displaye d from 0:00 to 23:59, wi thout any P (PM) indicator.

• The watch’s built- in full automatic calen dar makes allowances for d ifferent month lengt hs and leap

ars. Once yo u set the date, there should be n o reason to change it except af ter you have the

ye watch’s rechargea ble battery replaced or after power drops to Level 5 ( page E-10).

• The day of the we ek changes automatica lly when the date changes .

• Refer to the page s shown below for more info rmation on Timekee ping 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

water depth display units” (page E-57)

1. In the Timekeeping Mode, hold down A for at least two seconds. will ﬂ ash in the upper display and

SET

Next,

will ﬂ ash in the middle display and then

the upper display. Keep A depressed until this happens.

• The city c ode and the name of the cur rently selected city will s croll

cross the display.

Change the hour or minutes

Change the year, month, or day

Hold

will ﬂ ash in the lower display.

Use D (+) and L (–).

PM) indicator w ill appear for times from

TYO

): “To specify temperature and

CITY

will appear in

SET

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

Water Depth Unit

• The follow ing steps explain how to conﬁ gure t imekeeping setting s only.

• Note that the Wate r Depth Unit and Temperature Un it settings will not appe ar when Tokyo is

elected as you r 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:

12/24-Hour Format

24H

)

Button Operation Tone

Press D.

Illumination Duration

AUTO

), Standard Time

12H

) and 24-hour (

Temperature Unit

Change the city code Use D (East) and L (West).

Cycle between Auto DST (

OFF

(

Toggle between 12-hour ( timekeeping.

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

Power Saving

) and Daylight Saving Time (ON).

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.

Day

E-33

E-34

Timekeeping Mode Diving Mode

About 3 seconds

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-36

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

Surface time

Previous dive maximum depth

Previous dive time

E-38

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

elapsed.

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

starts.

- : - -

if more than 48 hours have

E-35

Diving Mode Bearing Water temperature

Water depth

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

•

• 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.

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. 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.

Dive time Water

ﬂ

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

Hold TIME

will appear on the display and then disappear. Keep C depressed until it

Bearing

display

temperature

E-37

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

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.

rm that the watch is in the Diving Mode before diving again.

E-39

Operation Guide 3445

Surface Time Measurement

For repeat diving, your watch has function that automatically measures the time that elapses after a dive ends as surface time. Surface time is measured for up to 48 hours after a dive ends. If you perform a repeat dive while the surface time measurement operation is in progress, the measurement operation will be restarted from after the end of the new dive.

Surface Time Measurement Example

Enter the Diving Mode.

1.5m

Water depth

E-40

In the Diving Mode, hold down A for about ﬁ ve seconds.

• This will set the currently detected pressure as the 0-meter depth.

Dive time

Dive measurement start error

Warning mark

Enter the Timekeeping Mode.

Surface time

Timekeeping Mode

Surface Time Display

Example

Surface time

Diving Mode

About 5 seconds

If you start a dive without entering the Diving Mode and then enter the Diving Mode at a depth greater than 1.5 meters, the current depth will be displayed using the standard atmosphere 1,013 hPa as the 0-meter depth.

• Since the water surface is not measured as 0 meters, there is large

error between the measured depth and the actual depth.

• At this time, a warning mark (

• In this case, measurement starts at a depth of 1.5 meters or greater, so

the displayed dive time will be shorter than the actual dive time.

) will ﬂ ash on the display to warn you.

To display the surface time

Surface time

In the Timekeeping Mode, press A.

• Surface time can be displayed only while a surface time measurement

operation is in progress.

Useful Functions

To reset 0-meter depth manually

Important!

• This function is disabled at depths greater than 1.5 meters in order to avoid operation error.

Normally, the watch uses the barometric pressure it detects immediately after you enter the Diving Mode as the 0-meter depth. If you enter the Diving Mode while in the water (which will result in a wrong auto 0-meter setting), you can use manual 0-meter reset to correct the setting.

Diving Function Measurement Data and Ranges Water Depth Measurement

Measurement Data and Ranges

Dive Time Measurement unit: 1 second

Water Depth Measurement unit: 0.1 meter (0.5ft)

Digital Compass Measurement unit: 1°

Water Temperature Measurement unit: 0.1°C (0.2°F)

Surface Time Measurement unit: 1 minute

Important!

• The watch will take approximately ﬁ ve minutes to become acclimatized to sudden temperature

changes (difference between air temperature and water temperature, change in the water temperature, etc.) and to display the actual water temperature.

Measuring range: 5:59'59" (6 hours)

Measuring range: 0.0 meters to 80 meters (0.0ft~262.5ft)

Measuring range: 0 to 359°

Measuring range: –10°C to 60°C (14°F~140°F)

Measuring range: 47:59' (48 hours)

• Not displayed after 48 hours following dive completion.

E-41

E-42

Display Contents

Display Range 0.0 meters to 80.0 meters (0.0ft~262.5ft)

Measuring Interval 1 second*

* After the watch enters the Diving Mode, the measuring interval switches to one second when a depth of

0.3 meters or greater is measured.

Water Depth and Water Pressure

Underwater pressure increases along with the depth. In the case of seawater (Speciﬁ c Gravity: 1.025), water pressure increases one atmosphere (1.03kg/cm depth sensor of your watch detects water pressure, and the watch uses the relationship between water pressure and depth to display a seawater depth value.

dEEP

“

” is displayed when the depth reaches or exceeds 80.0 meters.

A measurement that is outside the allowable range in displayed as

To conserve battery power, measurements at depths up to 0.3 meters are taken at 10-second intervals.

) with each 10-meter increase in depth. The water

Dive Time Measurement

Measurement range (6 hours maximum)

If the dive time exceeds six hours, the watch will automatically enter the Timekeeping Mode and record a dive time of 6:00.

• Less than 180 minutes: minutes, seconds display, measurement in 1-second units

• After 180 minutes: hours, minutes display, 1-minute units

E-44

Dive Start

Entering the Diving Mode and then initially submersing to a depth greater than 1.5 meters starts dive time measurement.

Dive End

At the end of a dive, surfacing for the ﬁ nal time (immediately before switching to the Timekeeping Mode) from a depth of 1.5 meters or greater to a depth of 1.4 meters or less (displayed as 0.0 meters) is regarded as the dive end time.

• The dive end time is not recorded.

Dive Time

The dive time displayed by the watch is deﬁ greater following the start of a dive. Resuming a dive (successive dive) within 10 minutes of elapsed surface time is treated as a continuation of the current dive session and its time is added on to the dive time. Refer to the nearby illustration for details (page E-45).

Important!

• Once you enter the Diving Mode, everything measured is considered as part of the same dive until you

enter the Timekeeping Mode again.

• To have a subsequent dive recorded in a separate log record, enter the Timekeeping Mode and then

re-enter the Diving Mode.

• If during a dive session you repeatedly surface and dive, the time spent on the water surface is not

included in the dive time.

E-46

ned as the cumulative time spent at depths of 1.5 meters and

E-43

Dive Time Measurement

Dive time measurement starts and stops automatically at a depth of 1.5 meters. Entering the Diving Mode and then initially submersing to a depth greater than 1.5 meters starts dive time measurement. After that,

- -.-

your dive time will be the cumulative time you spent at depths greater than 1.5 meters during your current dive session. In the example shown below, the total time spent at depths greater than 1.5 meters would be: 20 + 15 = 35 minutes.

Dive Time Measurement Example

Enter the Diving Mode.

Current time

Depth:

1.5 meters

Water depth

Dive start

time

20 minutes

Dive time = 35 minutes

Enter the Timekeeping Mode.

Dive end

time

15 minutes

E-45

Measurement Error Troubleshooting

Negative water depth error

The conditions described below will cause a negative depth reading and cause the warning mark ( ﬂ ash on the display.

• Entering the Diving Mode while in the water (at a depth of 0.1 to 1.4 meters) and then surfacing or

exiting the water after a dive.

• Using the watch where abnormal barometric pressure changes occur.

Almost all water depth errors occur on the water surface, and are cleared by auto 0-meter reset. A ﬂ ashing warning mark ( error in displayed data.

A negative depth error does not indicate malfunction of the watch. The watch will operated normally after the error is cleared. However, any data that was measured prior to the depth error will have large error. Returning to the Timekeeping Mode and entering the Diving Mode again to re-start new measurement is recommended.

Negative water depth error

) indicates that a negative water depth error has occurred, and that there will be large

• Normal data measurement and log data recording will be performed

display

after a negative depth error is displayed, but the warning mark ( continue to ﬂ ash.

) to

) will

E-47

+ 11 hidden pages

Casio 3445 Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual