Manual Casio WS-1700H-1AVEF Watch

Manual

Operation Guide 3562

EN-19

To toggle between 12-hour and 24-hour timekeeping

In the Timekeeping Mode, press D to toggle between 12-hour timekeeping and

24-hour timekeeping.

x With the 12-hour format, the P (PM) indicator appears to the left of the hour digits

for times in the range of noon to 11:59 p.m. and the A (AM) indicator appears to

the left of the hour digits for times in the range of midnight to 11:59 a.m.

x With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without

any indicator.

x The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is

applied in all other modes.

x The A and P indicators are not displayed with the Timekeeping Mode time on the

Timer Mode and Dual Time Mode screens.

EN-18

4. When the setting you want to change is flashing, use B and D to change it as

described below.

Setting Screen Button Operations

UTC Differential

Use B (–) and D (+) to change the setting.

x You can specify a value in the range of –12.0 to

+14.0, in 0.5-hour units.

Longitude Value

Use B (–) and D (+) to change the setting.

x You can specify a value in the range of 0° to 180°,

in 1-degree units.

East Longitude/

West Longitude

Use D to switch between east longitude (E) and

west longitude (W).

Lunitidal Interval Hours,

Minutes

Use B (–) and D (+) to change the setting.

x When the DST setting is on, the UTC differential can be set in a range of –11.0

to +15.0 in 0.5-hour units.

5. Press A to exit the setting screen.

EN-17

To configure Home Site data

1. In the Timekeeping Mode, hold down A until the

seconds start to flash, which indicates the setting

screen.

2. Press A again to display the UTC differential setting

screen.

3. Press C to move the flashing in the sequence shown

below to select other settings.

UTC Differential

East Longitude/

West Longitude

Longitude Value

C

C

C

C

Lunitidal Interval Minutes Lunitidal Interval Hours

C

UTC differential

EN-16

x The following is the initial factory default Home Site data (Tokyo, Japan) when you

first purchase the watch, and whenever you have the battery replaced. Change

these settings to match the area where you normally use the watch.

UTC differential (+9.0); Longitude (East 140 degrees); Lunitidal interval (5 hours,

20 minutes)

EN-15

Home Site Data

Moon phase, tide graph data, and Moon/Tide Data Mode data will not be displayed

properly unless Home Site data (UTC differential, longitude, and lunitidal interval) is

configured correctly.

x The UTC differential is a value that indicates the time difference between a

reference point in Greenwich, England and the time zone where a city is located.

x The letters “UTC” is the abbreviation for “Coordinated Universal Time”, which is the

world-wide scientific standard of timekeeping. It is based upon carefully maintained

atomic (cesium) clocks that keep time accurately to within microseconds. Leap

seconds are added or subtracted as necessary to keep UTC in sync with the

Earth’s rotation.

x The lunitidal interval is the time elapsing between the Moon’s transit over a

meridian and the next high tide at that meridian. See “Lunitidal Interval” (page

EN-45) for more information.

x This watch displays lunitidal intervals in terms of hours and minutes.

x The “Site/Lunitidal Interval Data List” at the back of this manual provides UTC

differential and longitude information around the world.

EN-14

To toggle the Timekeeping Mode time between DST and Standard Time

1. In the Timekeeping Mode, hold down A until the

seconds start to flash, which indicates the setting

screen.

2. Press C once to display the DST setting screen.

3. Press D to toggle between Daylight Saving Time (On

displayed) and Standard Time (OF displayed).

4. Press A twice to exit the setting screen.

x The DST indicator appears on the Timekeeping,

Moon/Tide Data, and Alarm Mode screens to indicate

that Daylight Saving Time is turned on. In the case

of the Moon/Tide Data Mode, the DST indicator

appears on the tide data screen only.

DST indicator

On/Off status

EN-13

4. Press A twice to exit the setting screen.

x The first press of A displays the UTC differential setting screen. Pressing A

again exits the setting screen.

x See “Daylight Saving Time (DST) Setting” below for details about the DST

setting.

x The day of the week is displayed automatically in accordance with the date

(year, month, and day) settings.

Daylight Saving Time (DST) Setting

Daylight Saving Time (summer time) advances the time setting by one hour from

Standard Time. Remember that not all countries or even local areas use Daylight

Saving Time.

EN-12

3. When the setting you want to change is flashing, use B and D to change it as

described below.

Screen To do this: Do this:

Reset the seconds to 00

Press D.

Toggle between Daylight Saving Time (On) and

Standard Time (OF)

Press D.

Change the hour or minutes

Use B (–) and D (+).

Change the year

Change the month or day

EN-11

Important!

x Be sure to configure the current time and date, and your Home Site data (data

for the site where you use the watch) correctly before using the functions of this

watch. See “Home Site Data” (page EN-15) for more information.

To set the time and date

1.

In the Timekeeping Mode, hold down A until the

seconds start to flash, which indicates the setting

screen.

2. Press C to move the flashing in the sequence shown

below to select the other settings.

Seconds

MinutesHourDST

Day

YearMonth

CC

CC

CC

C

EN-10

Timekeeping

Use the Timekeeping Mode to set and view the current

time and date.

x The Moon phase indicator (page EN-42) shows the

current Moon phase in accordance with the current date

as kept in the Timekeeping Mode.

x The tide graph (page EN-44) shows tidal movements for

the current date in accordance with the current time as

kept in the Timekeeping Mode.

x The graphic area indicates the current time as kept

in the Timekeeping Mode. For details on reading the

graphic areas, see “Graphic Area” (page EN-46).

PM indicator

Seconds

Graphic area

Tide graph

Moon phase indicator

Day of week

Month –

Day

Hour :

Minutes

Rating

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