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

Operation Guide 3445

Sensor error

A sensor error occurs, indicated by display of other force damages a sensor, causes faulty sensor connection, etc.

Water depth sensor error

If a sensor error occurs, do not use the watch for diving and contact an authorized CASIO service center as soon as possible for repair.

E-48

High-altitude and fresh water diving

When you enter the Diving Mode, the watch automatically sets ambient pressure as the 0-meter depth (0-meter reset). This means you can use the watch even when diving in a lake at a high altitude. At a high altitude that exceeds 5,000 meters (Barometric Pressure: 530 hPa or less), indicating that measurement is not possible. Note that the watch displays water depth that is converted to seawater depth (Speciﬁ c Gravity: 1.025). Because of this, your depth when diving in fresh water is actually about 2.5% deeper than the depth displayed by the watch.

Example

Displayed depth: 20 meters × 1.025 = 20.5 (actual depth)

The watch’s ascent rate alarm is triggered by ascent of 10 meters per minute or greater. Note that the trigger rate is for seawater diving.

Notice that the higher the altitude you dive at, the lower the barometric pressure compared to that at sea level. This means that there is a greater risk of decompression sickness and other problems than at sea level. Also note that you should engage in high-altitude and fresh water diving only after completing applicable special training.

• Even if an error occurs, dive time measurement will continue if it is

• Hold down C for about three seconds to enter the Timekeeping Mode.

Err

already started.

and the ﬂ ashing warning mark (

LIMIT ERR

) if strong impact or

will be displayed,

Diving Mode FAQ

1. What is the meaning of the warning mark ( ) on the display?

The warning mark ( while a warning mark is on the display is unreliable and should not be used for future dive planning, etc. If a warning mark (

E-50

) indicates that some problem has occurred in the Diving Mode. Log data produced

) ﬂ ashes on the display, refer to page E-62.

Precautions During Use

Extreme ambient temperature changes

• Your watch measures pressure using a precision pressure sensor. Temperature extremes due to the

causes below while using it can make proper measurement impossible. – Leaving the watch in direct sunlight – Leaving the watch inside a vehicle parked in the sun

In such cases, leave the watch in the water for two to three minutes to acclimate before using it. A sudden change in temperature while you are using the watch for diving may cause a depth value of 0.1

to 0.3 meters to be displayed while you are on the water surface, or may cause a negative depth error. If a measurement error occurs, refer to page E-47.

• The operating temperature range (accuracy guaranteed) for the watch’s water depth sensor and

temperature sensor is –10°C to 60°C. The operating temperature range (accuracy guaranteed) for the watch’s direction sensor is 10°C to 40°C. Using this watch while ice diving or for other applications that will cause its allowable operating temperature ranges to be exceeded can cause measurement error and/or operation error.

Extreme depth ﬂ uctuations

Your watch measures water depth in approximately one-second intervals and displays the result. A sudden change in water depth can cause the displayed depth to be different from the actual depth. In addition, a slow surfacing rate no greater than 10 meters per minute is recommended in the case of sports diving in order to avoid trouble due to lung squeeze, lung problems, the risk of decompression sickness, and other dangerous problems.

E-49

2. What happens if the watch battery goes dead during a dive?

The H, M, and L marks will ﬂ ash on the display to indicate a battery error. If this happens during a dive, the dive time measurement and the current timekeeping will continue, but water depth measurement, water temperature measurement, and direction detection operations will be disabled. Also note that log data stored before the battery error will be retained, but there will be no log data recorded following the error.

3. Why does data recording start as soon as I enter the water?

Forcefully entering the water can cause you to reach a depth of 1.5 meters or greater immediately after entry, which will cause data recording to start. If you surface to 1.4 meters or less, dive time measurement will pause. Then when you resume your dive, dive time measurement will restart.

4. What should I do if log memory becomes full?

Log memory has a maximum capacity of 20 log records. If log memory already has 20 log records, recording a new log record in the Diving Mode will automatically delete the oldest log record to make room for the new one.

5. What is the maximum water depth that can be measured?

Water depth can be measured up to 80 meters. Exceeding a depth of 80 meters causes on the display. Normal display of the water depth value will resume after you return to a depth of 80 meters or less. In the above case, the maximum depth log data will also show

6. What is the maximum temperature (water temperature) that can be measured?

Temperature can be measured within the range of –10°C to 60°C. value is outside the allowable range.

- -.-°C

is displayed when a measured

dEEP

to appear

E-51

7. What is the maximum dive time that can be measured?

A dive time of up to six hours can be measured for a single log data record. The watch will return to the Timekeeping Mode if the dive time exceeds six hours. If this happens, log data up to six hours is recorded in memory.

8. In the case of successive diving and repeat diving, how does the watch determine where one dive starts and another dive ends?

The watch applies the criteria below when you return to the water surface (depth of 1.4 meters or less) at the end of a dive.

Successive diving If you resume your dive (to a depth of 1.5 meters or greater) before 10

Repeat diving Hold down C for about three seconds to enter the Timekeeping Mode. (The

9. Can I operate buttons while under water?

The buttons of the watch can 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 dive measurement start error (page E-42). The warning mark ( point when the Diving Mode is entered. Water depth measurement and log data recording will be performed, but it should be remembered that data in this case is unreliable.

E-52

15. Are there any precautions when taking the watch on an airplane?

Entering the Diving Mode while ﬂ ying will display a depth value based on your current surrounding air pressure, which will cause the watch to mistakenly interpret that you are currently under water. While diving, the watch will not return to the Timekeeping Mode if you hold down C for about three seconds. This is a safety feature to avoid accidental switching to the Timekeeping Mode from the Diving Mode during a dive. If you are not diving, you can override the safety feature by holding down C for about 10 seconds to force the watch to return to the Timekeeping Mode. It is important to note, however, that you should never use this override operation while diving.

16. Does this watch support saturation diving?

No. Never use this watch while saturation diving. Doing so creates the risk of accident and damage to the watch.

17. What should I do if the watch detects abnormal magnetism during a bearing reading operation,

which is indicated by the ﬂ ashing ﬁ gures in the illustration below?

E-54

minutes of surface time elapse, the current log record is kept open and the new dive is considered as part of the current dive.

watch will also return to the Timekeeping Mode automatically if the surface time exceeds 10 minutes.) Now if you re-enter the Diving Mode, a separate log record will be started.

) will ﬂ ash on the display, or dive time measurement will start from the

Move away from any potential source of strong magnetism and try taking a reading again. If abnormal magnetism is detected again when you retry, it could mean that the watch itself has become magnetized. If this happens, continue to keep away from the source of strong magnetism, perform ﬁ gure 8 or 3-point calibration, and then try taking a reading again. See “To perform figure 8 calibration” (page E-70), “To perform 3-point calibration” (page E-72), and “Location” (page E-78).

11. What happens to log data and/or surface time measurement if I change the current time or date setting?

Log data and/or surface time measurement is unaffected if you change the current time or date setting.

12. What happens if I use display illumination too much while diving?

Overuse of illumination, the compass, or other functions that require high power can cause a battery error, which will limit further availability of illumination and sensors. When a battery error occurs, the display will continually show only the current time and dive time (up to six hours).

13. How can I maximize operation provided by a battery charge?

A pressure sensor is activated while the watch is in the Diving Mode, which means that the Diving Mode consumes large amounts of power. Frequent use of the Diving Mode will shorten the life between charges of the chargeable battery. To maximize battery life, be sure to enter the Diving Mode just before you are ready to dive, and exit it as soon as possible after completing the dive.

14. Can I use the watch for high-altitude diving?

When you enter the Diving Mode, the watch automatically sets ambient pressure as the 0-meter depth (0-meter reset). This means you can use the watch even when diving in a lake at a high altitude. At a high altitude that exceeds 5,000 meters (Barometric Pressure: 530 hPa or less), display indicating that measurement is not possible. Note that depth values displayed by this watch are based on seawater depth (Speciﬁ c Gravity: 1.025), and that your depth when diving in fresh water is actually 2.5% deeper than the displayed depth.

Fresh water depth = Displayed Depth × 1.025 The watch’s ascent rate alarm is triggered by ascent of 10 meters per minute or greater. Note that the trigger rate is for seawater diving. Notice that the higher the altitude you dive at, the lower the barometric pressure compared to that at sea level. This means that there is a greater risk of decompression sickness and other problems than at sea level. Make sure that you complete the special applicable training before diving at high altitude or in fresh water.

Ascent Rate Alarm

The ascent rate alarm displays a ﬂ ashing warning whenever you ascend from a scuba dive (using a self-contained underwater breathing apparatus) at a rate of 10 meters per minute or faster.

• The rate of ascent is a general rule of thumb that indicates the speed at which excessive bubble

formation is avoided.

• Breaking this general rule of ascent can lead to decompression sickness. Because of this, the ascent

rate alarm of the watch cannot be disabled by you.

• Note that 10 meters per minute is ascent rate setting for diving in seawater, not fresh water.

Important!

• Your watch is not a precision measuring instrument. The alarm function is intended for general

reference only. Be sure to use this watch together with special-purpose equipment.

LIMIT ERR

will appear on the

E-53

E-55

Operation Guide 3445

How is an ascent rate alarm warning indicated?

Flashing graphic dial and text

Current water depth

E-56

3. Press D to change the unit settings as shown below.

To specify this unit: Press D to toggle between these settings:

Temperature

Water depth

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

Dive time

The watch will sound a Rapid Ascent Alarm for ﬁ ve seconds, and the graphic dial and the text

• After the alarm stops sounding,

continue to ﬂ ash for an additional ﬁ ve seconds (10 seconds total).

• To stop the alarm tone, press any button.

°C

(Celsius) and °F (Fahrenheit)

(meters) and ft (feet)

SLOW

will ﬂ ash on the display.

SLOW

and the graphic dial will

Specifying Temperature and Water Depth Display Units

Use the procedure below to specify the temperature and water depth display units to be used in the Thermometer Mode and the Diving Mode.

Important!

TYO

• When

To specify temperature and water depth display units

1. In the Timekeeping Mode, hold down A for at least two seconds.

2. Press C as many times as necessary until

(Tokyo) is selected as the Home City, the water depth unit is set automatically to meters (m) and the temperature unit to Celsius (°C). These settings cannot be changed.

• First, SET

Hold will ﬂ as h on the display, and then CITY will appe ar in the upper di splay. Keep A depressed u ntil CITY is displayed. After that , the currently selected cit y code and city name w ill scroll across the upp er display.

display.

• See the seq uence in step 2 of the procedu re under “To change the

urrent time and d ate settings manually ” (page E-32) for informatio n

about how to sc roll through setting sc reens.

UNIT

appears on the

E-57

Viewing Diving Log Records

You can use the Diving Log Mode to view the dive start date and time, dive time, maximum depth, and low water temperature data that is recorded in the Diving Mode.

To view log records

1. In the Timekeeping Mode, press C once.

• This enters th e Diving Log Mode. LO

two seco nds, followed by the newest l og record.

• Refer to page E-2 6 for information about nav igating between mode s.

G appears on th e display for

E-58

The ﬁ gure below shows how a record’s data is displayed.

Log record number

2 seconds

Dive start time

* Pressing A displays the recoded dive start date (year, month, day) and time for two seconds.

E-60

To delete all log records

1. Enter the Diving Log Mode.

2. Hold down A for about ﬁ ve seconds. First,

CLEAR ALL

• The mess age NO

Troubleshooting when a Flashing Warning Mark ( ) Appears

A ﬂ ashing warning mark ( ) in the Diving Mode means some problem occurred during a measurement, or that there was some operation error. The warning mark also will appear (without ﬂ ashing) whenever the log data that was recording during the measurement problem or operation error is displayed. Log data for which the warning mark appears should not be used for dive planning or other purposes because it contains large error. Also, data that is stored in the Diving Mode while the warning mark is ﬂ ashing is assigned a CAUTION number (which also appears in the log data record), which identiﬁ es the type of problem that occurred. For details about each type of problem, refer to the pages in the table below.

CAUTION Number Description Possible Cause Page

C-1

C-2

C-3

E-62

will stop ﬂ ashing and remain display. Release A when

deleted.

Dive start date (month, day)

2 seconds

-DATA will scrol l on the display to indicate that a ll log records have been

Water depth measurement start error

Negative water depth error • Surfacing after Diving Mode was entered while

Battery error (H, M, L

ashing)

ﬂ

CLEAR ALL Hold

Diving Mode entered while under water (Depth:

1.5 meters or greater).

at a depth of 1.4 meters or less

• Extreme temperature or pressure change after

entering the Diving Mode

• Battery is low so measurement is impossible. E-10

Low water temperature

CLEAR ALL

Dive time

stops ﬂ ashing.

Maximum Depth

Dive start year

will ﬂ ash on the display. After that,

E-42

E-47

Log record number

Dive start time

To delete a speciﬁ

1. Enter the Diving Log Mode.

2. Use D to display the log record you want to delete.

Important!

• Note that hol ding down A fo

• Once a reco rd is deleted, it cannot be re covered.

3. Hold down A for about two seconds. First, will stop ﬂ ashing and remain display. Release A as soon as

• Deleting a re cord displays the record t hat comes after it.

• If the record yo u delete is the last one stored i n memory, the message NO

display.

CAUTION Number Description Possible Cause Page

C-4

C-5

C-6

C-7

Err-1

• Frequent appearance of

center.

• Appearance of

information.

Dive start date (month, day)

c log record

C-1

2. Use D to select the record you want.

• Each press of D s

newest (record num ber -01-) to the oldest (record nu mber -20-). If there are alread y 20 log records in mem ory, the oldest log rec ord is deleted auto matically to make room for th e new one.

• Pressing D d

the record befo re that one, and so one.

• Holding do wn D s

• Log record nu mbers are lower for older da ta.

r more than ﬁ ve sec onds in step 3 will delete all lo g records.

Water depth measurement start error + Negative water depth error

Water depth measurement start error + Battery error

Negative water depth error + Battery error

Water depth measurement start error + Negative water depth error + Battery error

Water depth sensor error • Sensor malfunction or faulty connection making

Err-1

can indicate watch malfunction. Contact an authorized CASIO service

C-7

through

indicates an operation error. Refer to the applicable pages for

crolls throug h log records in sequenc e, from

isplays the previ ous record, pressing agai n displays

crolls the rec ords at high speed.

CLEAR Hold

C-1

C-2

C-1, C-2

measurement impossible

• Detected pressure outside of the sensor's

allowable range, etc.

ash on the display. After that,

will ﬂ

CLEAR

stops ﬂ ashing.

C-2

and

compound error E-42

C-3

and

compound error E-42

C-3

and

compound error E-47

C-3

, and

compound error E-42

-DATA will scroll on the

CLEAR

E-47

E-10

E-47

E-10

E-48

E-59

E-61

E-63

Operation Guide 3445

Taking Direction Readings

You can use the digital compass to determine the direction to a speciﬁ c objective, as well as your current position.

• For information about what you can do to improve digital compass reading accuracy, see “Calibrating

the Bearing Sensor” (page E-68) and “Digital Compass Precautions” (page E-77).

To take a direction reading

You can enable a Digital Compass auto level correction function if you are having difﬁ watch correctly while diving. If it is, the angle value will show even if a bearing is measured, correct angle display is possible.

1. Make sure the watch is in the Timekeeping Mode.

2. Place the watch on a ﬂ at surface. If you are wearing the watch, make sure that your wrist is horizontal

(in relation to the horizon).

3. Point the 12 o’clock position of the watch in the direction whose reading you want to take.

4. Press D to start.

E-64

ill appear in th e upper display to indicate tha t a digital compass ope ration is in progress.

• COMP w

• About on e second after you press D, g

will appear o n the graphic dial. The bea ring to your objective will als o be indicated by literal indication s and a bearing angle.

raphic indicato rs for north, south, e ast, and west

- - -

to indicate too much of a tilt. In that case,

culty positioning the

Objective

North pointer

South

Note

• If the four poi nters (north, south, eas t, west) and the literal directio n indication do not appe ar

hen you press D, it could mea n that the watch is displaying be aring memory infor mation. If this happen s, press A to delete the cur rent bearing memor y contents. For more infor mation, see “Using Be aring Memory” ( page E-76).

• To return to the Time keeping Mode, press C.

lso press C to return to the Ti mekeeping Mode whe n you want to stop a reading operat ion part

A way through.

12 o’clock position

West

East

Bearing angle to objective

Bearing to objective: Northwest

N: North E: East W: West S: South

Current time

Bearing Indication

Meaning

315°

0°

E-65

Digital Compass Readings

• To restart a reading operation from the beginning, press D.

• The watch will return to the Timekeeping Mode after the reading operation (which takes about 60

seconds) is complete.

• Pressing C while a reading operation is in progress will return to the Timekeeping Mode.

• The auto light switch is disabled during the 60 seconds that digital compass readings are being taken.

• Note that taking a direction reading while the watch is not horizontal (in relation to the horizon) can

result in large direction reading error.

You can calibrate the bearing sensor if you suspect the direction reading is incorrect.

•

• Any ongoing direction reading operation is paused temporarily while the watch is performing an alert

operation (daily alarm, Hourly Time Signal, countdown timer alarm) or while illumination is turned on (by pressing L). The direction reading operation resumes for its remaining duration after the operation that caused it to pause is ﬁ nished.

• See “Digital Compass Precautions” (page E-77) for important information about taking direction readings.

Example of Compass Use Under Water

While diving where there is poor illumination, where there are no reference marks, or under other conditions where it is difﬁ cult to advance directly to an objective, there is the possibility that you may lose track of your current location or the direction from which you have come. Examples of using the Digital Compass Mode for underwater navigation is shown below. Before using the watch for such an application, be sure to complete applicable underwater navigation training.

E-66

A: Diving straight down and then straight back up

Diving Mode Screen

Desired bearing

12 o’clock

Bearing angle (°)

B: Diving in a rectangular pattern with 90° turns that take you back to your original starting point

• Perform the same general steps as in example A, but each time you turn add (for a clockwise

rectangle) or subtract (for a counterclockwise rectangle) 90° at every turn.

Calibrating the Bearing Sensor

You should calibrate the bearing sensor whenever you feel that the direction readings being produced by the watch are off. You can use any one of three different bearing sensor calibration methods: ﬁ gure 8 calibration or 3-point calibration or magnetic declination 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 ﬁ gure 8 calibration. When performing 3-point calibration, remove the watch from your wrist.

E-68

1. With 12 o'clock of the watch pointed in the direction of your desired bearing, press D to display the bearing angle in degrees (°).

• The watch conti nues to measure water depth even wh ile it is taking

a d

irection rea ding.

2. If the resulting desired bearing angle is 100°, for example, dive straight downwards as you keep the bearing angle reading around 100° and you count your number of ﬁ n kicks.

3. After you reach your destination, prepare to return to your starting point by changing your bearing by 180°. This should make the return bearing angle your original desired bearing angle plus or minus 180°.

4. If, the return bearing angle is 280° (100°+180°) as in this example, dive straight as you keep the bearing angle reading around 280° for the required number of ﬁ n kicks.

Underwater navigation

Example: Using your ﬁ n kick count or some other means travel a speciﬁ c distances as shown below

E-67

Important!

• If the readings produced by the digital compass of this watch are different from those of the other

compass, perform ﬁ gure 8 calibration or 3-point calibration of the digital compass to ensure more accurate readings. Accurate measurements and/or calibration will not be possible in an area exposed to strong magnetic force and indoors (especially inside reinforced concrete structure). In this case, moving outdoors, away from the source of magnetism for measurement and calibration is recommended.

Magnetic Declination Correction

•

With magnetic declination correction, you input a magnetic declination angle (difference between magnetic north and true north), which allows the watch to indicate true north. You can perform this procedure when the magnetic declination angle is indicated on the map you are using. Note that you can input the declination angle in whole degree units only, so you may need to round off the value speciﬁ on the map. If your map indicates the declination angle as 7.4°, you should input 7°. In the case of 7.6° input 8°, for 7.5° you can input 7° or 8°.

Figure 8 calibration and 3-point calibration precautions

• You can use any two opposing directions for ﬁ gure 8 calibration and 3-point calibration. You must,

however, make sure that they are 180 degrees opposite each other. Remember that if you perform the procedure incorrectly, you will get wrong bearing sensor readings.

• You should perform ﬁ gure 8 calibration or 3-point calibration in an environment that is the same as that

where you plan to be taking direction readings. If you plan to take direction readings in an open ﬁ for example, calibrate in an open ﬁ eld.

eld,

E-69

To perform ﬁ gure 8 calibration

Animation

E-70

1. In the Digital Compass Mode, hold down A for at least two seconds.

• SET Hold will ﬂ ash on t he display and then CAL will ap pear. Keep

depressed u ntil CAL appears.

2. Press D.

• Move your arm i n a ﬁ gure 8 pattern a s shown in the illustratio n.

• This will cau se a ﬁ gure 8 calibrati on animation to appear o n the

isplay. After con ﬁ rming that th e animation is displayed, m ove

d your arm.

Note

• Allow your wr ist to turn as you move your arm.

• Separate your a rm from your body as muc h as possible as you move it.

• When calib ration is successful, OK will a ppear on the display and th en the watch will start ta king

direction rea dings. This indicates th at calibration is compl ete.

ppears on th e display, press D and then per form the procedure fro m step 2 again.

• If ERR a

E-71

Operation Guide 3445

To perform 3-point calibration

E-72

E-74

ground

Important!

• Proper declination correction will not be possible if the watch is on a

metal surface or a magnetized surface.

• When setting Point 2, properly point the watch in the direction that 180°

opposite that of Point 1.

• When setting Point 3, properly turn the watch over 180°.

1. In the Digital Compass Mode, hold down A for at least two seconds.

• SET Hold will ﬂ ash on t he display and then CAL will ap pear. Keep

depressed u ntil CAL appears.

2. Press C.

• This will cau se

up arrow (

4. Leaving the watch pointed upwards, rotate it as precisely as possible 180 degrees from point 1.

5. Keeping the watch parallel to the ground, press D to calibrate Point 2.

IT is sho wn on the display while cal ibration is being perfo rmed.

• WA

• When calib ration is successful, t he words TURN a

alternate on th e display. After that, -3- will appear o n the display.

• If calibratio n fails for some reason, retu rn to step 2 of this

rocedure and t ry again.

6. Turn over the watch so its face is pointed at the ground.

• In this case, it m akes no difference wh at direction the 12 o’clock

osition of th e watch is pointed.

7. With the watch pointed downwards and parallel with the ground as shown in the illustration, press D.

• This star ts calibration of Point 3.

IT is sho wn on the display while cal ibration is being perfo rmed.

• WA

• If calibratio n is successful, the watch w ill beep once. Also, the

atch will display OK and s tart taking a directi on reading. This

w indicates that c alibration is complete.

• If the watch bee ps three times and displays ERR, p

procedure fro m step 3 again.

-1- CAL to appea r on the digital display, with an

) ﬂ as hing.

nd OVER will

erform th e

ground

To perform magnetic declination correction

• Keep the watch level and don’t move it during the calibration process.

• For information about magnetic declination, see “Magnetic North and True North” (page E-77).

Magnetic declination angle direction value (E, W, or OFF)

Magnetic declination angle value

3. With the watch pointed upwards and parallel with the ground as shown in the illustration, press D.

• WA

IT will be s hown on the digital disp lay while calibration of Poi nt

1 is in progress . Turn 18 0° will appe ar on the digital display if calibratio n is successful, and the n

• If calibratio n fails for some reason, retu rn to step 2 of this

rocedure and t ry again.

1. In the Digital Compass Mode, hold down A for at least two seconds.

SET Hold

depressed until

2. Press C twice.

• DE

declinatio n angle setting will ﬂ ash on t he display.

3. Use D (East) and L (West) to change the settings.

• The follow ing explains magnetic dec lination angle directio n

set

OFF

E W

• You can select a value w ithin the range of W 90 ° to E 90° with

hese sett ings.

• You can turn off (

• The illustrat ion, for example, shows th e value you should input

a magnetic de clination of 1° West.

4. When the setting is the way you want, press A to exit the setting screen.

ash on the display and then

will ﬂ

CAL

appears.

C will appear on th e display and then the curre nt magnetic

tings.

: No magnetic declination correction performed. The magnetic

declination angle with this setting is 0°.

: When magnetic north is to the east (east declination)

: When magnetic north is to the west (west declination)

OFF

and L at the same ti me.

nd the directi on setting you shoul d select when the map sh ows a

) m

-2- will appear.

CAL

will appear. Keep A

agnetic decl ination correction by pre ssing

E-73

E-75

Using Bearing Memory

E-76

Location

• Taking a direction reading when you are near a source of strong magnetism can cause large errors in

• Accurate readings are impossible indoors, especially inside ferroconcrete structures. This is because

• Accurate direction readings are also impossible while in a train, boat, air plane, etc.

Storage

• The precision of the bearing sensor may deteriorate if the watch becomes magnetized. Because of

• Whenever you suspect that the watch may have become magnetized, perform the procedure under “To

E-78

12 o’clock position

Pointer to bearing in bearing memory

North pointer

Bearing memory direction angle

Direction angle of current reading

readings. Because of this, you should avoid taking direction readings while in the vicinity of the following types of objects: permanent magnets (magnetic necklaces, etc.), concentrations of metal (metal doors, lockers, etc.), high tension wires, aerial wires, household appliances (TVs, personal computers, washing machines, freezers, etc.)

the metal framework of such structures picks up magnetism from appliances, etc.

this, you should store the watch away from magnets or any other sources of strong magnetism, including: permanent magnets (magnetic necklaces, etc.), concentrations of metal (metal doors, lockers, etc.), and household appliances (TVs, personal computers, washing machines, freezers, etc.)

perform ﬁ

value

Bearing Memory

Screen

gure 8 calibration” (page E-70) or “To perform 3-point calibration” (page E-72).

Bearing Memory lets you temporarily store and display a direction reading so you can use it as a reference as you take subsequent digital compass readings. The Bearing Memory screen displays 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 Bearing Memory

1. Press D to start a digital compass reading operation (page E-64).

• This will ta ke an initial reading and the n take readings every

econd for 6 0 seconds.

• If a bearing me mory direction an gle value is already displayed, i t

eans that th ere is a reading already stored in B earing Memory. If

m this happen s, press A to clear the Be aring Memory read ing and exit the bear ing memory screen b efore performing the a bove step.

2. During the 60 seconds that digital compass readings are being taken, press A to store the current reading in Bearing Memory.

• The Beari ng Memory directio n angle is displayed for abou t one second as it is stored in B earing

emory. Af ter that, the Bearing M emory screen (which s hows the bearing mem ory direction angle

M and pointer) will a ppear, and a new 60-s econd direction readin g operation will star t.

• You can press D a

60- second direction rea ding operation. Doin g so will display the directio n angle for the direction that the 12 o’clock po sition of the watch is pointe d. The direction angle of th e current reading will disappear f rom the display after the 6 0-second direct ion reading operation is c omplete.

• During the ﬁ rst 6 0 seconds after you di splay the Bearing Mem ory screen or during a 6 0-second

irection rea ding operation you trig gered by pressing D while the Be aring Memory scre en is on

d the display, the direc tion stored in memor y is indicated by a Bearing Me mory pointer.

• Pressing A w

Bearing M emory and start a n ew 60-seco nd direction reading ope ration.

Digital Compass Precautions Magnetic North and True North

True north

Magnetic north

Earth

t any time whil e the Bearing Memor y screen is displayed, to star t a new

hile the Bea ring Memory scree n is displayed will clear the re ading currently in

The northerly direction can be expressed either as magnetic north or true north, which are different from each other. Also, it is important to keep in mind that magnetic north moves over time.

• Magnetic north is the north that is indicated by the needle of a

compass.

• True north, which is the location of the North Pole of the Earth’s axis, is

the north that is normally indicated on maps.

• The difference between magnetic north and true north is called the

“declination”. The closer you get to the North Pole, the greater the declination angle.

E-77

Viewing Time Stamp Records (Time Recall)

You can use the Time Recall Mode to view time stamp records you created in the Timekeeping Mode and other modes.

To create a time stamp record

To create a time stamp record, hold down B for about one second in any mode until the watch beeps.

REC

•

will appear on the display, indicating that a record of the current date and time was created.

To view time records

Record number

Date (month, day)

Time

1. In the Timekeeping Mode, press C twice.

• This enters th e Time Recall Mode.

one secon d, followed by the newest tim e record.

• Refer to page E-2 6 for information about nav igating between mode s.

• Pressing A d

two seconds.

2. Use D to select the record you want.

• Each press of D s

newest (record num ber -01-) to the oldest (record nu mber -20-).

• Pressing D d

the record befo re that one, and so on.

• Holding do wn D s

• Records are nu mbered so an older reco rd has a lower number.

isplays the date (ye ar, mo nth day) and time for about

crolls throug h log records in sequenc e, from

isplays the previ ous record, pressing agai n displays

crolls log rec ords at high speed.

REC

ppears on th e display for

E-79

Operation Guide 3445

Display of Time Stamp Records Created in Each Mode

Record Number

Water Depth (alternates with water temperature and the hour, minute, second)

Other Modes Thermometer Mode

second

• Pressing A displays the date (year, month day) and time for about two seconds.

E-80

Month, dayHour, minute,

Digital Compass ModeDiving Mode

Bearing (alternates with hour, minute, second)

Temperature (alternates with hour, minute, second)

Using the Stopwatch

The stopwatch measures elapsed time, split times, and two ﬁ nishes.

To enter the Stopwatch Mode

Use C to select the Stopwatch Mode (

To perform an elapsed time operation

Start Stop (Resume) (Stop) Reset

To pause at a split time

Start Split

D D D A

A A D A

SPLIT

(

appears in the upper part of the display.)

STW

) as shown on page E-26.

Split release Stop Reset

Minutes

Seconds

1/100 second

Hours

Current time

To delete a speciﬁ c time stamp record

1. Enter the Time Recall Mode.

2. Use D to display the record you want to delete.

Important!

• Note that hol ding down A fo

records.

• Once a reco rd is deleted, it cannot be re covered.

3. Hold down A for about two seconds. First, will stop ﬂ ashing and remain display. Release A as soon as

• Deleting a re cord displays the record t hat comes after it.

• If the time rec ord you delete is the last one s tored in memory, the mess age NO

the display.

To delete all time stamp records

1. Enter the Time Recall Mode.

2. Hold down A for about ﬁ ve seconds. First,

CLEAR ALL

• The mess age NO

To measure two ﬁ nishes

Start Split

Note

• The Stopwatch Mode can indicate elapsed time up to 99 hours, 59 minutes, 59.99 seconds.

• Once started, stopwatch timing continues until you press D to stop it, even if you exit the Stopwatch

Mode to another mode and even if timing reaches the stopwatch limit deﬁ operation will remain paused until you press D to restart it or A to reset.

• Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time and returns

to elapsed time measurement.

will stop ﬂ ashing and remain display. Release A as soon as

deleted.

r more than ab out ﬁ ve secon ds in step 3 will delete all time st amp

CLEAR Hold

CLEAR ALL Hold

-DATA will scrol l on the display to indicate that a ll time stamp records have be en

A D A A

First runner ﬁ nishes.

SPLIT

(

appears in the upper part of the display.) Display time of ﬁ rst runner

Stop

Second runner ﬁ nishes.

ash on the display. After that,

will ﬂ

CLEAR

stops ﬂ ashing.

will ﬂ ash on the display. After that,

CLEAR ALL

Split release

Display time of second runner

ned above. A paused timing

CLEAR

-DATA will scroll on

stops ﬂ ashing.

Reset

E-81

E-82

Using the Countdown Timer

The countdown timer can be conﬁ gured to start at a preset time, and sound an alarm when the end of the countdown is reached.

Note

• The time up alarm will sound even if the watch is in the Diving Mode. Perform the start operation before

entering the Diving Mode.

Countdown time (Hour, minutes, seconds)

E-84

Current time

To enter the Countdown Timer Mode

Use C to select the Countdown Timer Mode (

• About one second after

change to show the countdown time hours.

To specify the countdown start time

1. Enter the Countdown Timer Mode.

• If a countdow n is in progress (indicated by th e seconds counting

own), press D to stop it and the n press A to reset to the curre nt

d countdow n start time.

• If a countdow n is paused, press A to re

countdow n start time.

2. Hold down A for at least two seconds.

• SET Hold will ﬂ ash on t he display and then the cur rent start time

setting wi ll start to ﬂ ash. Ke ep A depressed u ntil the start time setting st arts to ﬂ ash.

3. Press C to move the ﬂ ashing between the hour and minute settings.

TMR

appears on the display, the display will

TMR

) as shown on page E-26.

set to the current

Using the Alarm

Alarm name (AL-, SNZ, or SIG)

Alarm time (Hour : Minutes)

E-86

Current time

You can set ﬁ ve independent daily alarms. When an alarm is turned on, an alarm will sound for about 10 seconds each day when the time in the Timekeeping Mode reaches the preset alarm time. This is true even if the watch is not in the Timekeeping Mode. One of the daily alarms is a snooze alarm. The snooze alarm will sound every ﬁ ve minutes up to seven times or until it is turned off. You can also turn on an Hourly Time Signal, which will cause the watch to beep twice every hour on the hour.

Note

• The alarm will sound even if the watch is in the Diving Mode.

• Set the time before entering the Diving Mode.

To enter the Alarm Mode

Use C to select the Alarm Mode (

• About one second after

change to show an alarm name ( indicator. The alarm name indicates an alarm screen. when the Hourly Time Signal screen is on the display.

• When you enter the Alarm Mode, the data you were viewing when you

last exited the mode appears ﬁ

ALM

) as shown on page E-26.

appears on the display, the display will

AL-1

AL-4

SNZ

, or

) or the

SIG

rst.

SIG

is shown

E-83

4. Use D (+) and L (–) to change the ﬂ ashing item.

• To set the startin g value of the countdown ti me to 24 hours, set 0H

5. Press A to exit the setting screen.

To perform a countdown timer operation

Start Stop (Resume) (Stop) Reset

• Before starting a countdown timer operation, check to make sure that a countdown operation is not in

progress (indicated by the seconds counting down). If it is, press D to stop it and then A to reset to the countdown start time.

• An alarm will sound and the graphic dial will ﬂ ash for ten seconds when the end of the countdown is

reached. This alarm will sound in all modes. The countdown time is reset to its starting value automatically after the alarm stops sounding.

To stop the alarm

Press any button.

To set an alarm time

1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set

is displayed.

D D

00’00.

E-85

AL-1 AL-2 AL-3

SIG* SNZ AL-4

* There is no tim e setting for the hourl y time signal.

Alarm ON/OFF indicator

2. Hold down A until current settings start to ﬂ ash.

• This is the se tting screen.

3. Press C to move the ﬂ

4. While a setting is ﬂ ashing, use D (+) and L (–) to change it.

• When set ting the alarm time usin g the 12-hour format, ta ke care to

et the time co rrectly as a.m. (no indicator) or p. m. (P indicator).

5. Press A to exit the setting screen.

• Setting a n alarm time causes that al arm to turn on automatica lly.

SET Hold

appears on the display and then the

ashing between the hour and minute settings.

E-87

Operation Guide 3445

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.

Alarm on indicator

Hourly time signal on indicator

Snooze alarm indicator

E-88

• The alarm o n indicator (when any alarm is o n), sno oze alarm

ndicator (when t he snooze alarm is on), and the H ourly Time

i Signal on ind icator (when the Hourly T ime Signal is on) are shown on the display i n all modes.

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”.

Currently selected Word Time City

Current timekeeping Mode time

Current time in the currently selected 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.

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,

seven times or until it is canceled.

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

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.

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

DST indicator

SNZ

will ﬂ

ash on the display until the snooze alarm sounds all

SNZ

indicator is ﬂ

1. In the World Time Mode, use D to scroll through the available city codes.

• Keep scrolling u ntil the city code who se Standard Time/ Daylight

aving Time se tting you want to change is dis played.

2. Hold down A for at least two seconds.

• Keep A depressed u ntil DST Hold on or DST H old OFF starts to

ﬂ as h on the display.

ST Hold on m eans that summer tim e is enabled, and that the

• D

current time is a dvanced accordingly. DST H old OFF means that summer ti me is disabled, and that th e current time shows stan dard time.

• This toggles t he city code you selec ted in step 1 between Daylight

aving Time (DST indi cator displayed) and standard ti me (DST

S indicator not d isplayed).

• Using the Worl d Time Mode to change th e DST setting of the

ity code t hat is selected as your Hom e City also will change t he

c Timekee ping Mode time DST se tting.

• Note that you can not switch between st andard time/daylight

aving time (D ST) while UTC is selected as the Wo rld Time City.

• Note that the s tandard time/daylight sav ing time (DST) set ting

ffects onl y the currently selected ti me zone. Other time zon es are

a not affecte d.

ashing

E-89

E-90

Taking Temperature Readings

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

To take temperature readings

Temperature

Diving (Diving Mode)

E-92

To calibrate the temperature sensor

4. Use D (+) and L (−) to calibrate the temperature value with the reading of another instrument.

• Each press of a bu tton changes the tem perature value in units of 0.1°C (0.2 °F).

• To return the temperat ure to its uncalibrated value (OFF s

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.

E-94

Use C to select the Thermometer Mode (

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.

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

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.

Hold will ﬂ as h on the display and then the te mperature will

• SET

ﬂ a s h . K e e p A depressed u ntil °C ﬂ ashes.

TEMP

) as shown on page E-26.

etting), press D and L at the same

E-91

Temperature

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

• The displayed temperature value changes to

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.

- -.-

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

E-93

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

Tide level (Tide Graph)

In the Timekeeping Mode, press A to display the Tide Graph.

E-95

Operation Guide 3445

High tide

Low tide

• Tide Graph readings are based on average values*.

• If the Tide Graph hand indication is not correct, check the Timekeeping Mode time and date, and the

Home City settings. If this does not correct the problem, refer to “Calibrating the High Tide Time” (page E-102).

* The average tide graph uses a period of 12 hours 25 minutes from high tide to the next high tide,

assuming that low tide is between.

E-96

Moon Phases and Moon Age

The Moon goes through a regular 29.53-day cycle. During each cycle, the Moon appears to wax and wane as the relative positioning of the Earth, Moon, and Sun changes. The greater the angular distance between the Moon and the Sun,* the more we see illuminated.

* The angle to the Moon in relation to the direction at which the Sun is visible from the Earth.

See “Northern Hemisphere View or Southern Hemisphere View Moon Phase” (page E-104).

• Your watch shows the Moon phase and Moon age at noon of a date, regardless of the time displayed

by the watch.

• The Moon phase is based on the northern hemisphere view, with the Moon to the south. Note that the

Moon phase form will be reversed in the case of the southern hemisphere view (Moon to the north).

• The margin for error of the Moon age is ±1 day.

• The Tide Graph and Moon phase are displayed in the Timekeeping Mode and Tide/Moon Mode only.

• If Moon phase indication is not correct, check the Timekeeping Mode time and date settings, and the

Home City setting.

To view the current moon phase

Moon phase

To view the current Moon age

Today’s Moon age

(Part you cannot see) Moon phase (part you can see)

Moon Phase Indicator

Moon Age

Moon Phase

Moon Phase Indicator

28.7-29.8

1.0-2.7 2.8-4.6 4.7-6.4 6.5-8.3 8.4-10.1 10.2-12.0 12.1-13.8

0.0-0.9

New Moon

In the Timekeeping Mode, the display shows the current date’s Moon phase.

•

The Moo n phase is indicated by the whi te part.

Moon phase (white part)

1. Use C to enter the Tide/Moon Mode as shown on page E-26.

2. Press A to display the Moon age for today.

First Quarter (Waxing)

E-97

E-98

To view the tide level at a different time today

Tide Screen

Tide level at 6:00 a.m. for today

To view the tide level, Moon phase, and Moon age for a speciﬁ c date and time

Tide Screen

Tide level at 6:00 a.m. for today

E-100

Calibrating the High Tide Time

You obtain more accurate tide indications by the watch by calibrating its high tide time with information you can ﬁ nd on the Internet or in a newspaper.

• Note that the high tide time differs according to your location and the current season.

To calibrate the high tide time

1. In the Tide/Moon Mode, display the Moon Screen.

• If the Tide Sc reen is displayed, press A to c

in the followi ng sequence: MOON ➝ Moon age.

2. Use D to specify the date you want.

• Each press of D a

• Holding do wn D s

• About on e second after you displ ay the desired date, the Moo n age on that date appears.

• You can skip this step i f you do not want to change the da te setting.

E-102

1. Use C to enter the Tide/Moon Mode as shown on page E-26.

• This displays t he Tide Screen, which s hows information in the

llowing sequ ence: After TIDE appears on th e display, the Tide

fo Graph will disp lay 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 a

Graph to chang e accordingly.

• Holding do wn D s

• If you are using 12- hour timekeeping, t he P (p

also appear o n the display.

1. Use C to enter the Tide/Moon Mode as shown on page E-26.

• This displays t he Tide Screen, which s hows information in the

llowing sequ ence: After TIDE appears on th e display, the Tide

fo Graph will disp lay the tide level at 6:00 a.m . on the current day.

2. Press A.

• This displays t he Moon Screen, whi ch shows information in t he

ollowing sequence: MOON appears on the disp lay, alo ng with the

f Moon age at n oon on the speciﬁ ed date.

Tide Screen Moon Screen

dvances the d ay by 1. crolls the date at hi gh speed.

dvances the t ime by one hour, causing the Ti de

crolls the tim e at high speed.

hange to the M oon Screen, which sho ws information

.m.) indicator will

Today’s Moon age

Moon Age

Moon Phase

3. Use D to specify the date you want.

• Holding do wn D s

• About on e second after you displ ay the desired date, the Moo n age on that date appears.

• You can select any date b etween January 1, 2 000 and Decem ber 31, 2099.

• You can use this scre en to check the Moon pha se and the Moon age on th e speciﬁ ed date.

• To view the tide level for a s peciﬁ ed date and t ime, go to step 4 of this procedu re.

4. Press A.

• This displays TIDE a

5. Use D to specify the time you want.

• Each press of D a

• Holding do wn D s

• If you are using 12- hour timekeeping, t he P (

Note

• Navigating from the Moon Screen to the Tide Screen clears any time you speciﬁ ed. To view the tide level for a speciﬁ ed date and time, ﬁ rst specify the date (steps 2 and 3).

• Navigating to the Timekeeping mode clears any time and date you speciﬁ ed. In the Timekeeping mode, Tide Graph shows the current tide level and Moon phase shows the moon

phase at noon of today’s date.

13.9-15.7 15.8-17.5 17.6-19.4 19.5-21.2 21.3-23.1 23.2-24.9 25.0-26.8 26.9-28.6

Hour : Minutes

Full Moon

crolls the day at hig h speed.

nd shows the ti de at 6:00 a.m. on the sp eciﬁ ed day.

dvances the t ime by one hour, causing the Tid e Graph to change according ly. crolls the tim e at high speed.

3. Hold down A for at least two seconds. display, and then the high tide time hour digits will ﬂ ash. Keep the button depressed until the hour digits ﬂ ash.

• If you are using 12- hour timekeeping, t he P (p

also appear o n the display.

4. Use D (+) and L (−) to change the hour setting.

• Holding do wn D or

• Any time duri ng steps 4 through 6, you can di scard your changes

a selected by pres sing D and L at the same ti me.

• If there are two h igh tides on a date, set the time o f the ﬁ rst high

ide. The watch wil l automatically calcul ate the time of the second

t one.

• If summer ti me is turned on for your H ome Time (DST d

you should al so use summer time wh en setting the high tide t ime (page E-30).

5. Press C.

6. Use D (+) and L (−) to change the minute setting.

• Holding down D or L scrolls the minutes at high speed.

7. Press A.

• The Tide S creen reappears after c alibration is complete.

• Performi ng the above procedure allo ws the Tide Graph to indicate

ide informati on more accurately.

p.m.) indicator will al so appear on the display.

nd return to the hig h tide time for the date that was prev iously

Last Quarter (Waning)

SET Hold

L scrolls the ho ur at high speed.

E-101

will ﬂ ash on the

.m.) indicator will

isplayed),

E-103

E-99

Operation Guide 3445

Northern Hemisphere View or Southern Hemisphere View Moon Phase

You can select either of the settings below.

• Northern hemisphere view (Moon to the south)

• Southern hemisphere view (Moon to the north)

To specify Northern Hemisphere View or Southern Hemisphere View Moon Phase

High tide time (hour: minute)

E-104

1. In the Tide/Moon Mode, hold down A for at least two seconds.

SET Hold

will ﬂ

will ﬂ ash. Keep the button depressed until the hour digits ﬂ ash.

ash on the display, and then the high tide time hour digits

Illumination

The display of the watch is illuminated for easy reading in the dark. The watch’s auto light switch turns on illumination automatically when you angle the watch towards your face.

• The auto light switch must be enabled (page E-108) for it to operate.

To turn on illumination manually

Press L in any mode to illuminate the display.

• You can use the procedure below to select either 1.5 seconds or three

seconds as the illumination duration. When you press L, the display will remain illuminated for about 1.5 seconds or three seconds, depending on the current illumination duration setting.

• The above operation turns on illumination regardless of the current

auto light switch setting.

• If the display is illuminated, illumination will turn off automatically if an

alarm starts to sound.

• After you turn on illumination once in the Diving Mode, you will not be

able to turn it on again until depth measurement is complete.

To change the illumination duration

1. In the Timekeeping Mode, hold down A for at least two seconds. display, and then

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

CITY

will appear in the upper display. Keep A depressed until this happens.

SET Hold

ash on the middle

will ﬂ

2. Press C twice.

• This displays a s creen for selecting No rthern Hemisphe re view or Southern He misphere view for

he Moon pha se.

3. Press D to toggle between Northern Hemisphere view and Southern Hemisphere view.

4. Press A to exit the setting screen.

2. Use C to cycle through the setting screens until

• The current ill umination duration se tting (1 or

• See the sequ ence in step 2 of the procedu re under “To change the current ti me and date

3. Press D to toggle the illumination duration between three seconds (3 displayed) and 1.5 seconds (1 displayed).

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

About the Auto Light Switch

Turning on the auto light switch causes illumination to turn on, whenever you position your wrist as described below in any mode.

Moving the watch to a position that is parallel to the ground and then tilting it towards you more than 40 degrees causes illumination to turn on.

Warning!

Always make sure you are in a safe place whenever you are reading the display of the watch

•

using the auto light switch. Be especially careful when running or engaged in any other activity that can result in accident or injury. Also take care that sudden illumination by the auto light switch does not startle or distract others around you.

When you are wearing the watch, make sure that its auto light switch is disabled before riding on

•

a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a trafﬁ c and serious personal injury.

[N S]: Northern Hemisphere

view (Moon to the south)

ettings ma nually” (page E-32) for info rmation about how to sc roll through setting scre ens.

[N S]: Southern Hemisphere

view (Moon to the north)

LIGHT

appears in the upper display.

3) will be ﬂ ashing in th e lower display.

Wear the watch on the outside of your wrist

More than 40°

accident

E-105

E-106

Note

• This watch features a “Full Auto Light”, so the auto light switch operates only when available light is

below a certain level. It does not illuminate the display under bright light.

• The auto light switch is always disabled, regardless of its on/off setting, when any one of the following

conditions exists.

While an alarm is sounding 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

Auto light switch enabled indicator

E-108

In the Timekeeping Mode, hold down L for at least three seconds to toggle the auto light switch between enabled (LT displayed) and disabled (LT not displayed).

• The auto light switch enabled indicator (LT) is on the display in all

modes while the auto light switch is enabled.

• The auto light switch becomes disabled automatically whenever

battery power drops to Level 4 (page E-10).

Other Settings

The button operation tone sounds any time you press one of the watch’s buttons. You can enable or disable the button operation tone as desired.

• Even if you disable the button operation tone, the alarm, Hourly Time Signal, Rapid Ascent Alarm, and

Countdown Timer Mode alarm all operate normally.

To enable or disable the button operation tone

E-110

Mute indicator

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

will ﬂ

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.

2. Use C to cycle through settings on the display until the current button operation tone (

• See the seq uence in step 2 of the procedu re under “To change the

urrent time and d ate settings manually ” (page E-32) for informatio n

c about how to sc roll through setting sc reens.

3. Press D to toggle the button operation tone between enabled ( and disabled (

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

Note

• MUTE i

disabled.

MUTE

s displayed in all m odes when the butto n operation tone is

KEY

Hold

will ﬂ ash in the lower display.

) is displayed.

CITY

will appear in

KEY

SET

Illumination Precautions

• The LED that provides illumination loses power after very long use.

• Illumination may be hard to see when viewed under direct sunlight.

• Illumination turns off automatically whenever an alarm sounds.

• Frequent use of illumination runs down the battery.

Auto light switch precautions

• 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, disable the auto light switch whenever engaging in activities that might cause frequent illumination of the display.

• Note that wearing the watch under your sleeve while the auto light switch is enabled can cause

frequent illumination of the display and can run down the battery.

To enable or disable Power Saving

Power saving enabled indicator

)

• 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 (page E-106), 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 your face 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.

• 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.

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.

2. Use C to cycle through the setting screens until the current power saving setting (On or

WER SAVING will scroll across the upper d isplay at this time.

• PO

• See the seq uence in step 2 of the procedu re under “To change the

urrent time and d ate settings manually ” (page E-32) for informatio n

c about how to sc roll through setting sc reens.

3. Press D to toggle Power Saving between enabled (On) and disabled

OFF

(

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

Note

• The Power Sav ing on indicator (PS) i

while Power S aving is enabled.

OFF

) is displayed.

Hold

will ﬂ ash in the lower display.

s on the display i n all modes

CITY

will appear in

E-107

E-109

SET

E-111

Operation Guide 3445

Troubleshooting

Diving Mode

The watch will not enter the Diving Mode.

■

LOW

HML

will not enter the Diving Mode while it is in the charge recovery state.

■

This indicates that the reference pressure for setting the 0-meter depth is outside of the sensor’s allowable measuring range. If the high-altitude limit pressure is 530 hPa or lower, a water depth limit pressure is 9,500 hPa or greater, a

■

If you accidentally enter the Diving Mode while in an aircraft or any other vehicle where there are large changes in air pressure, the watch will interpret the current pressure as being underwater (depth of 1.5 meters or greater). In this condition, the watch will not return to the Timekeeping Mode.

• If this happens, hold down C for about 10 seconds to force the watch to return to the Timekeeping

Important!

Do not use the above operation to force the watch into the Timekeeping Mode while diving.

■

Refer to “Troubleshooting when a Flashing Warning Mark (

ﬂ ashing on the screen indicates that the watch is in the charge recovery state. The watch

LIMIT ERR appears when I try to enter the Diving Mode.

will occur.

LIMIT ERR

The watch won’t enter the Timekeeping Mode.

Mode.

The warning mark (

) is ﬂ ashing on the display.

LIMIT ERR

) Appears” (page E-62).

will occur. If the

Depth readings are incorrect.

■

When the watch enters the Diving Mode, it sets the current ambient pressure as 0 meters. Because of this, you should always enter the Diving Mode while on the water surface. If you entered the Diving Mode while under water, reset 0 meters on the water surface. Refer to “To reset 0-meter depth manually” (page E-41).

Especially during the summer months, direct sunlight can cause the watch to become abnormally hot. If this happens, leave the watch in the water for two to three minutes to acclimate before using it. See “Precautions During Use” (page E-49).

Subjecting the watch to strong shock can affect the accuracy of the depth measurements. If this happens immediately contact an authorized CASIO service center for inspection and sensor adjustment.

This watch displays sea water depth. Fresh water depth can be obtained by multiplying the displayed depth value by 1.025.

Log data is not being recorded.

■

Log data is recorded only while the watch is measuring a depth of 1.5 meters or less. Immediately after entering the Diving Mode, the watch measures water depth every 10 seconds. If you suddenly dive into the water from a boat or other location, measurement timing may cause a delay in the start of memory recording. When water depth is 0.3 meters or less, measurements are taken ever second. Because of this, it is recommended that, while on the water surface, you lower your wrist for about 10 seconds to start timing.

If a battery error occurs (indicated by the point that the error occurred will be recorded, but subsequent log data will not be recorded. For more information, refer to “Charging the Watch” (page E-9) and “Power Levels” (page E-10). If a sensor malfunction occurs, contact an authorized CASIO service center.

HML

ﬂ ashing) or if a sensor error occurs during a dive, data up to

E-112

The depth reading does not show 0.0 meters, even when I am on the water surface.

■

• If there is a major change in barometric pressure (due to weather) between the start of the dive and the

end of the dive, or if the barometric pressure on the water surface where the watch is being used is greater than the standard atmosphere, the water depth value may not return to 0.0 meters at the end of the dive.

• Entering the Diving Mode while in the water (water pressure equivalent to a depth of 1.5 meters or less)

will cause a water depth of 0 meters to be displayed at the standard atmosphere of 1,013 hPa.

Display illumination will not light.

■

Frequent use of illumination over a short period will cause the recovery state) and disable illumination.

The watch may have been subjected to strong shock, causing malfunction of illumination. If this happens, contact an authorized CASIO service center.

Once you use illumination in the Diving Mode, it will become disabled until you complete your dive.

Taking Direction Readings

ERR appears following ﬁ gure 8 calibration.

■

ERR

will appear on the display and calibration may not be possible indoors or in other areas where strong

or weak magnetism is present.

• Move away from any potential source of strong magnetism and try taking a reading again. If

continues to be displayed, the problem may be due to a previous successful calibration operation, and calibration under current conditions that will not improve the calibration result.

• Take a direction reading and check if it is correct.

• If the direction reading is wrong and if

source of strong magnetism, contact an authorized CASIO service center.

E-114

Abnormal magnetism detection, indicated by the ﬂ ashing ﬁ gures on the display.

■

Move away from any potential source of strong magnetism and try taking a reading again.

• If abnormal magnetism is detected again when you retry, it could mean that the watch itself has

become magnetized. If this happens, continue to keep away from the source of strong magnetism, perform ﬁ

gure 8 calibration or 3-point calibration, and then try taking a reading again. See “To perform

ﬁ gure 8 calibration” (page E-70), “To perform 3-point calibration” (page E-72), and “Location” (page E-78).

Whenever you have a sensor malfunction, take the watch to your original retailer or nearest authorized CASIO distributor as soon as possible.

Temperature Readings

I can’t change the temperature and water depth display units.

■

TYO

When

(Tokyo) is selected as the Home City, the water depth unit is set automatically to meters (m)

and the temperature unit to Celsius (°C). These settings cannot be changed.

Temperature readings are incorrect.

■

Since the temperature sensor is inside the watch, temperatures displayed by the watch are watch body temperatures.

• When measuring air temperature, readings can be affected if you are wearing the watch, by exposure

to direct sunlight, by water splashing onto the watch, etc. For accurate air temperature measurements, remove the watch from your wrist, wipe away any water on the watch, and place the watch in the shade in a well-ventilated location.

• It takes about 20 to 30 minutes before the temperature of the watch becomes the same as the air

temperature.

• When measuring water temperature, your body temperature has almost no effect on measurements.

However, sudden changes in water temperature can take up to about ﬁ temperature readings by the watch.

E-116

ERR

continues to appear even if you move away from the

HML

marks to ﬂ

ash (indicating the charge

ve minutes to be reﬂ ected in

ERR

E-113

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.

■

ERR

appears, it could mean there is something wrong with the sensor or that there is a strong source of

magnetism nearby.

• Move away from any potential source of strong magnetism and try calibrating again.

ERR

• If

continues to appear even after multiple attempts to calibrate, contact your original retailer or

CASIO service center.

The direction information indicated by the watch is different from that indicated by a backup

■

compass.

• Move away from any potential source of strong magnetism, perform 8 calibration or 3-point calibration,

and then try taking a reading again. For more information, refer to “To perform ﬁ (page E-70), “To perform 3-point calibration” (page E-72) and “Location” (page E-78).

Direction readings produce different results at the same location.

■

• Move away from any potential source of strong magnetism and try taking a reading again. See

“Location” (page E-78).

I am having problems taking direction readings indoors.

■

• Indoors, strong and/or weak magnetic force and other factors can create a magnetic ﬁ eld that cannot

exist in geomagnetism. Because of this, correct measurement may not be possible indoors. See “Location” (page E-78).

If the temperature displayed by the watch is very different from temperature readings by another reliable measuring device, you can adjust readings to correct for errors.

• See “To calibrate the temperature sensor” (page E-94).

Sensor Measurement

“ERR” appears on the display while I am using a sensor.

■

Subjecting the watch to strong impact can cause sensor malfunction or improper contact of internal circuitry. When this happens,

Water Depth Reading Direction

ERR

• If

appears while a reading operation is being performed in a sensor mode, restart the operation. 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 (H) or Level 2 (M), the Digital Compass Mode, Thermometer Mode,

or Diving Mode sensor may become momentarily disabled if there is not enough voltage available to power it sufﬁ and sensor operation should resume once battery voltage returns to its normal level.

• If

applicable sensor.

ciently. In this case,

ERR

keeps appearing during a reading operation, it could mean there is a problem with the

ERR

(error) will appear on the display and sensor operations will be disabled.

Measurement

ERR

will appear on the display. This does not indicate malfunction,

Bearing Reading in

the Diving Mode

gure 8 calibration”

E-115

Temperature Reading

E-117

• There is something wrong with the sensor. This could be due to nearby strong magnetic force. If

continues to appear even after multiple attempts to calibrate after moving away from the source of the magnetism, contact your original retailer or CASIO service center. See “Location” (page E-78).

Charging

The watch does not resume operation after I expose it to light.

■

This can happen after the power level drops to Level 5 (page E-10). Continue exposing the watch to light until the battery power indicator shows “H” or “M”.

H, M, and L are all ﬂ ashing on the display.

■

The watch is in the charge recovery mode. Wait until the recovery process is complete (about 15 minutes). The watch will recover more quickly if you place it in a brightly lit location.

Note

• Performing repeated illumination and/or sensor reading operations over a short time period can cause

a sudden drop in watch’s charge. This will cause the watch to enter the charge recovery mode. The watch is in the charge recovery mode when H, M, and L are all ﬂ recovery mode is the same as a low battery charge state. Access to some functions is limited while the watch charge is recovering. Normal operation will resume after recovery is complete. For more information, refer to “Power Levels” (page E-10).

• Flashing H, M, L indicators or a ﬂ

extremely low. Immediately expose the watch to light to charge it.

Time Setting

See “Radio Controlled Atomic Timekeeping” (page E-14) for information about adjusting the time setting according to a time calibration signal.

E-118

ashing

CHG

indicator means that the charge level of the watch is

ashing on the display. The charge

ERR

The current time setting is off by hours.

■

Your Home City setting may be wrong (page E-30). Check your Home City setting and correct it, if necessary.

The current time setting is off by one hour.

■

If you are using the watch in an area where time calibration signal reception is possible, see “To conﬁ gure Home City and summer time settings” (page E-30).

If you are using in the watch in an area where time calibration signal reception is not possible, you may need to change your Home City’s standard time/daylight saving time (DST) setting manually. Use the procedure under “To change the current time and date settings manually” (page E-32) to change the standard time/daylight saving time (DST) setting.

Time Calibration Signal

The information in this section applies only when

HKG, BJS, HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, NYC, YHZ, YYT, TPE, SEL

as the Home City. You need to adjust the current time manually when any other city is selected as the Home City.

The display shows the ERR indicator when I check the result of the latest receive operation.

■

Possible Cause Remedy Page

Performing a button operation while a receive operation is ongoing will cancel it. Also, moving the watch during a receive operation will interfere with reception.

Keep the watch in an area where reception conditions are good while the signal receive operation is performed.

LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW

, or

TYO

is selected

E-16

E-119

Operation Guide 3445

Possible Cause Remedy Page

Alarm starts to sound while calibration signal receive is in progress.

You are in an area where signal reception is not possible for some reason.

The calibration signal is not being transmitted for some reason.

The current time setting changes after I set it manually.

■

You may have the watch conﬁ gured for auto receive of the time calibration signal (page E-17), which will cause the time to be adjusted automatically according to your currently selected Home City. If this results in the wrong time setting, check your Home City setting and correct it, if necessary (page E-30).

The current time setting is off by one hour.

■

Possible Cause Remedy Page

Signal reception on a day for switching between standard time/daylight saving time (DST) may have failed for some reason.

An ongoing receive operation is canceled if an alarm starts to sound.

See “Approximate Reception Ranges”. E-15

• Check the website of the organization that maintains the time

calibration signal in your area for information about its down times.

• Try again later.

Perform the operation under “To get ready for a receive operation”. The time setting will be adjusted automatically as soon as signal reception is successful.

If you are unable to receive the time calibration signal, change the standard time/daylight saving time (DST) setting manually.

E-16

E-32

–

Auto receive is not performed or you cannot perform manual receive.

■

Possible Cause Remedy Page

The watch is not in the Timekeeping Mode or World Time Mode.

Your Home City setting is wrong. Check your Home City setting and correct it, if necessary. E-30

There is not enough power for signal reception.

Signal reception is being performed successfully, but the time and/or day is wrong.

■

Possible Cause Remedy Page

Your Home City setting is wrong. Check your Home City setting and correct it, if necessary. E-30

The DST setting may be incorrect.

Auto receive is performed only while the watch is in the Timekeeping Mode or World Time Mode. Switch to either of these two modes.

Expose the watch to light to charge it. E-9

Change the DST setting to Auto DST. E-30

E-26

World Time Mode

The time for my World Time City is off in the World Time Mode.

■

This could be due to incorrect switching between standard time and daylight saving time. See “To specify standard time or daylight saving time (DST) for a city” (page E-91) for more information.

E-120

Speciﬁ cations

Accuracy at normal temperature: Timekeeping:

Time Calibration Signal Reception:

Diving Functions:

E-122

Stopwatch:

Countdown Timer:

Alarms: World Time:

Illumination:

Other:

Hour, minutes, seconds, p.m. (P), year, month, day, day of the week Time format: 12-hour and 24-hour Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099 Other: Three display formats (Day of the week/Date screen, Tide Graph, Surface Time); Home City

code (can be assigned one of 48 city codes); Standard Time / Daylight Saving Time (summer time) Year display on setting screen only.

signal) ; Remaining auto receives cancelled as soon as one is successful; Manual receive; Receive Mode

Receivable Time Calibration Signals: Mainﬂ ingen, 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 (Call Sign: BPC, Frequency: 68.5 kHz)

Water depth measurement range: 0.0 meters to 80.0 meters (0.0ft~262.5ft) Water depth measurement unit: 0.1 meter (0.5ft) Water depth measurement: 6 hours (in seconds up to 180 minutes, in minutes thereafter) Diving Mode: Auto measurement start/stop at a depth of 1.5 meters Log Record Memory 20 log records (dive start date and time, dive time, maximum depth, water

temperature low for each record) Surface time display: Up to 48 hours Ascent Rate Alarm: 5-second alarm

Measuring unit: 1/100 second Measuring capacity: 99:59'59.99" Measuring accuracy: ±0.0006% Measuring modes: Elapsed time, split time, two ﬁ nishes

Measuring unit: 1 second Countdown range: 24 hours Setting unit: 1 minute Timer alert time: 10 seconds

5 Daily alarms (with one snooze alarm); Hourly time signal

48 cities (31 time zones)

Other: Daylight Saving Time/Standard Time

LED light; Selectable illumination duration (approximately 1.5 seconds or 3 seconds); Auto

Light Switch (Full Auto Light operates only in the dark)

Battery power indicator; Power Saving; Alarm test; Button operation tone on/off

±15 seconds a month (with no signal calibration)

Auto receive 6 times a day (5 times a day for the Chinese calibration

Digital Compass:

Water/Air Temperature Measurement:

Measurement and display range: –10.0 to 60.0°C (or 14.0 to 140.0°F) Display unit: 0.1°C (or 0.2°F) Other: Calibration; Manual reading (button operation)

Water depth sensor accuracy:

–0.5 to 1.0 m* (guaranteed accuracy temperature range: –10°C to 60°C)

* Indicated depths are for seawater (Speciﬁ c Gravity: 1.025)

Bearing Sensor Precision:

Direction: Within ±10°

Values are guaranteed for a temperature range of 10°C to 40°C (50°F to 104°F).

North pointer: Within ±2 digital segments

Temperature Sensor Precision:

±2°C (±3.6°F) in range of –10°C to 60°C (14.0°F to 140.0°F)

Time Stamp:

20 records (year, month, day, hour, minute, second); additional information (water depth, bearing,

Tide/Moon:

Tide level (Tide Graph), Moon phase, Moon age date selection Selectable time (Tide Graph only)

Power Supply:

Approximate battery operating time: 7 months (from full charge to Level 4) under the following

• Alarm: 10 seconds/day

• Light: 1.5 seconds/day

• Time calibration receive: 4 minutes/day

• Display on 18 hours/day, sleep mode 6 hours/day

• Direction reading: 20 times/month (60 seconds continuous reading)

• Diving: 50 dives/year

Approximate battery life can be shortened by more frequent light operation.

Speciﬁ

Bearing angle measurement range 0° to 359°; 16 directions (Not displayed in the Diving Mode); direction calibration (ﬁ gure 8, 3-point); magnetic declination correction; 60-second continuous readings (Diving Mode: 20 seconds); bearing memory (Disabled in the Diving Mode.); auto level correction; east, west, north, south indication (4-direction graphic pointer)

temperature)

Solar panel and one rechargeable battery

conditions:

– Water depth measurement: 73 minutes (60 minutes diving)/dive – Light: 3.0 seconds (two 1.5-second operations)/dive – Rapid Ascent Alarm: 5 seconds/dive

cations are subject to change without notice.

E-121

E-123

E-124

E-125

L-1

Operation Guide 3445

City Code Table

City

Code

PPG Pago Pago –11

HNL Honolulu –10

ANC Anchorage –9

YVR Vancouver

LAX Los Angeles

YEA Edmonton

DEN Denver

MEX Mexico City

CHI Chicago

NYC New York –5

YHZ Halifax –4

YYT St. Johns –3.5

SCL Santiago

RIO Rio De Janeiro

FEN

RAI Praia –1

L-2

City

Fernando de

Noronha

GMT Differential

UTC Offset/

–8

–7

–6

–3

–2

City

Code

UTC

LON London

MAD Madrid

PAR Paris

ROM Rome

BER Berlin

STO Stockholm

ATH Athens

JRS Jerusalem

MOW Moscow

JED Jeddah

THR Tehran +3.5

DXB Dubai +4

KBL Kabul +4.5

KHI Karachi +5

City

UTC Offset/

GMT Differential

City

Code

DEL Delhi +5.5

KTM Kathmandu +5.75

0LIS Lisbon

+2CAI Cairo

DAC Dhaka +6

RGN Yangon +6.5

BKK Bangkok +7

SIN Singapore

HKG Hong Kong

BJS Beijing

TPE Taipei

SEL Seoul

TYO Tokyo

ADL Adelaide +9.5

GUM Guam

SYD Sydney

NOU Noumea +11

WLG Wellington +12

City

UTC Offset/

GMT Differential

+10

• This table shows the city codes of this watch.

(As of January 2016)

• The rules governing global times (GMT

differential and UTC offset) and summer time are determined by each individual country.

L-3

Casio 3445 Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual