Casio 1810 Owner's Manual

Module No. 1810

GENERAL GUIDE

• If the digital display of your watch is continually changing, see

“AUTO DISPLAY FUNCTION” for information on how to stop it.

• The operations in this manual are explained using the button names
shown in the illustration nearby.

Timekeeping Mode

GMT

-12

A

P

M

(Mode)

Stopwatch Mode

-12

P

TIMEKEEPING MODE

Use the Timekeeping Mode to set the current time and date. You can also
view the current time in the zone (city) you select in the World Time Mode.

• The current time where you are normally located appears on a Home Time
screen, while the time in the zone (city) you select in the World Time Mode
appears on a World Time screen.

Home Time Screen

Day of Week Year

Month – Day

GMT

-12

A

P

M

PM indicator

• The GMT Differential Graph shows the number of hours difference between

• Note that Home Time and World Time are linked. Changing the time or

• See “WORLD TIME MODE” for details on using the World Time Mode.

Hour : Minutes

the World Time and Greenwich Mean Time (pointer that is flashing), and
the Home Time and GMT (pointer that is not flashing). A single pointer that
is not flashing indicates that the GMT differential is the same for both the
Home Time and World Time.

date setting of the Home Time also changes the corresponding World
Time setting accordingly.

Setting the Time and Date

City code

-12

FAX CALL E-MAILTEL

A

P

M

Seconds City Code Hour Year DayMonth

3. While the seconds digits are selected (flashing), press

seconds to

• If you press
seconds are reset to
count is in the range of 00 to 29, the minutes count is unchanged.

4. Use

H and J to select the city code setting.

+12

FAX CALL E-MAILTEL

L

Hold down B

▲

B

Seconds

1. Hold down A while in the Timekeeping
Mode until the seconds digits start to flash

GMT

+12

L

B

00.

K while the seconds count is in the range of 30 to 59, the

on the display. The seconds flash because
they are

• At this time, the area of the display that

normally shows the day of the week and
year changes to show the currently selected
city code.

2. Press
the following sequence.

00 and 1 is added to the minutes. If the seconds

+12

FAX CALL E-MAILTEL

▲

GMT

+12

FAX CALL E-MAILTEL

(Light)

L

B

Press M

H

K

L

▼

World Time Screen

GMT Differential Graph

World time
indicator

▲

Time in the zone (city) you
select in the World Time Mode

-12



–11 –9 –7 –5 –3 –1

–12 –10 –8 –6 –4 –2

selected

GMT

-12

FAX CALL E-MAILTEL

P

GMT

+1 +3 +5 +7 +9 +11 +13

±

0

+2 +4 +6 +8 +10 +12

±

0

.

H or J to change the selection in

Press

J

Minutes

Press

H

K to reset the

J

+12

▲

+12

1810-1

• Press M to change from mode to mode.

• In any mode, press L to illuminate the display for about one second.

Telememo Mode

GMT

-12

▼

Alarm Mode

GMT

-12

FAX CALL E-MAILTEL

P

P

5. Use

K and L to scroll through the city codes until you find the one you

want to set as your home city (the city where you normally use the watch).

•

K scrolls forward, while L scrolls back through city codes. Holding down

either button scrolls through the city codes at high speed.

• See the “CITY CODE TABLE” at the back of this manual for a complete list
of available codes.

6. Use

H and J to select the hour, minutes, year, month, and day, and

make the settings you want for each.

• While hour, minutes, year, month, or day is selected (flashing), press
increase the number or
changes the current selection at high speed.

• While any settings are selected (flashing), press L to switch between the
12-hour and 24-hour formats.

• 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 pm. Times from midnight to
11:59 am are shown without any indicator.

• With the 24-hour format, times are indicated in the range of 00:00 to 23:59,
with a 24 indicator to the left of the hour digits.

7. After you make the setting you want, press A to return to the Timekeeping

Mode.

• The day of the week is automatically set in accordance with the date.

• The date can be set within the range of January 1, 1995 to December 31,

2039.

• If you do not operate any button for a few minutes while a selection is
flashing, the flashing stops and the watch goes back to the Timekeeping
Mode automatically.

Switching between Standard Time and Daylight
Saving Time

Daylight saving time (DST), which is also sometimes called “summer time,”
advances the time for one hour, as is the custom in some areas during the
summer. Remember that not all countries or even local areas use Daylight
Saving Time.

• The

GMT city code’s time cannot be switched to DST. However, the times

of other cities located in the same time zone as GMT can be switched to
DST.

-12

FAX CALL E-MAILTEL

A

P

M

Viewing the Home Time and World Time city code
settings

In the Timekeeping Mode, hold down J to display the Home Time city
setting, and

+12

FAX CALL E-MAILTEL

GMT

-12

+12

+12

FAX CALL E-MAILTEL

World Time Mode

-12

FAX CALL E-MAILTEL

P

▼

L to decrease it. Holding down either button

DST indicator

GMT

+12

DST

H to display the World Time city setting.

1. Hold down A while in the Timekeeping
Mode until the seconds digits start to flash
on the display. The seconds flash because
they are

2. Press B to toggle Daylight Saving Time on

L

• The DST indicator appears on the display to

B

3. After you make the setting you want, press

selected

and off.

indicate that daylight saving time is turned
on.

A to return to the Timekeeping Mode.

▼

GMT

+12

GMT

-12

P

.

+12

FAX CALL E-MAILTEL

K to

1810-2

Home Time City Code Screen World Time City Code Screen

A

M

City code

-12

FAX CALL E-MAILTEL

P

GMT

+12

GMT Differential Graph

L

Home Time
differential

B

(always

±

00)

GMT

-12

+12

FAX CALL E-MAILTEL

City code

Time in indicated city

Current time

Home Time differential

About the Backlight

In any mode, press L to illuminate the display for about one second.

• The backlight of the watch employs an electro-luminescent (EL) panel,
which loses illuminating power after very long use.

• The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.

• The watch will emit an audible sound whenever the display is illuminated.
This is caused by a transistor that vibrates when the EL panel lights up. It
does not indicate malfunction of the watch.

• The backlight automatically turns off whenever an alarm sounds.

• The backlight remains lit for about one second from the point you press L,

even if it is already lit when you press L. If you keep L depressed for one
or two minutes, the backlight will automatically turn off.

TELEMEMO MODE

Number of telememo

Mode

items stored

indicator

GMT

-12

+12

FAX CALL E-MAILTEL

Remaining
memory

Name

GMT

-12

A

M

+12

FAX CALL E-MAILTEL

▲

Data type indicators

FAX CALL E-MAILTEL

• “e-mail” is short for “electronic mail,” which are messages sent over a
computer network.

• You can input 8 characters for the name, 12 digits each for the telephone,
fax, and mobile phone/pager number (two fields for each number), and 46
characters for the e-mail address.

• The following data type indicators show you the type of data that is stored
for each data item: TEL (telephone number), FAX (fax number), CALL
(mobile phone, pager, or other number), E-MAIL (e-mail address).

• When you recall a data item, marks appear above the data type indicators
for each type of data input for that data item. The flashing mark is the one
that indicates the data type whose data is currently on the display.

• See the “MEMORY CAPACITY TABLE” at the back of this manual for
details on memory capacity.

• See the “CHARACTER LIST” at the back of this manual for details on how
the watch sorts data.

Telephone number

Inputting New Telememo Data

GMT

FAX CALL E-MAILTEL

+12

L

B

TEL

(Field 1 → 2)

-12

A

M

[New Data Screen]

Name field

• The data type indicator mark shows the field where the cursor is currently
located. No data type indicator mark means the cursor is located in the
name field.

• Each number data entry has two separate fields. Pressing B after inputting
a number in Field 1 displays Field 2. You can either input a second number
in Field 2 or press B to skip to the next number without inputting anything.

The Telememo Mode lets you store names,
telephone numbers, e-mail addresses and
other personal data for later recall when
you need it.

• If you do not operate any button for 2 or
3 minutes while in the Telememo Mode,
the watch automatically goes back to the
Timekeeping Mode.

About Telememo Data

L

You can input a name, telephone number,
fax number, mobile phone/pager number,
and an e-mail address for each Telememo
data item. Memory can hold up to 200 data

B

items, when each contains an eight­character name and a 12-digit number. Data
is automatically sorted based on the
characters of the name.

1. In the Telememo Mode, press K or L
until the new data screen appears.

• The new data screen is the one that is blank

(contains no name and telephone number).

• If there is no Telememo data stored in

memory yet, the new data screen appears
as soon as you enter the Telememo Mode.

2. Hold down A until the flashing cursor
appears in the text area.

3. Press B while the cursor is in the text area
or number area to jump to the next field.

FAX

(Field 1 → 2)

CALL

(Field 1 → 2)

E-MAIL

4. Move the cursor to the name field (text area) and input the name.

• See the “Text Area” for details on how to input characters in the text area.

5. After you input a name, press B to advance

GMT

-12

TEL

A

M

-12

FAX CALL E-MAILTEL

A

10. After inputting your data, press A to store it.

• When you press A to store data, the message
display for a few seconds. After the sort operation is complete, the cursor
appears in the text area (name field), ready for input a new Telememo data
item.

11. Input more data (starting from step 4) or press A again to return to the

Telememo Mode data screen (without the cursor).

• If the message
full. To store more data, you will first have to delete some of the data stored
in memory.

• If you do not perform any button operation for a few minutes while the
cursor is on the display, the watch automatically returns to the Telememo
Mode data screen (without the cursor).

• The text area of the display can show only six characters at a time, so
longer text scrolls continuously from right to left.

+12

FAX CALL E-MAILTEL

GMT

L

B

+12

E-MAIL

{FULL appears on the display, it means that memory is

to the telephone number input.

• This causes the cursor to jump to the number
area and the data type indiator mark for the
telephone number to appear on the display.

6. Input a number in the number area.

• See the “Number Area” for details on how to
input characters in the number area.

7. Repeat steps 5 and 6 to input other

telephone, fax, and pager/mobile phone
numbers.

• A data type indicator mark appears on the
display to indicate the type of data
(telephone, fax, pager/mobile phone) being
input.

8. After inputting numbers, use B to advance

to e-mail address input.

• At this time the cursor is located in the text
area, and the E-MAIL data type indicator
mark appears.

9. Input an e-mail address in the text area.

• See the “Text Area” for details on how to
input characters in the text area.

SORT appears on the

Continuously scrolls

Text area

Separator (inserted automatically)

Last letter of text

About Text and Number Input

Cursor

Text Area

GMT

-12

A

A

M

+12

FAX CALL E-MAILTEL

Number Area

Character type indicator

Character Type

Group Characters

Upper-case A

▲

Press L

▲

Indicator

Lower-case a

• Holding down K or L scrolls through the characters at high speed.

• Once the character you want is displayed, press

the right. Press

• See the “CHARACTER LIST” at the back of this manual for details on the
types of characters that can be input into the text area.

H to move the cursor back to the left.

Number Area

You can input hyphens, numbers and spaces for telephone, fax, and pager/
mobile phone numbers in the number area.

• Use

K and L to change the character (hyphen, number, or space) at the

cursor position in the number area. The character changes in the following
sequence. Holding down either button changes the character at high
speed.

Press K
Press L

• When the character you want is at the cursor position, press
cursor to the right. Press

You can input characters at the flashing cursor
in the Telememo Mode. There are two display
areas where you can input characters: a

area

and a

L

number area

.

Text Area

Use this area for the text (name and e-mail
address field). You can input upper-case and

B

lower-case alphabetical characters, numbers,
and various symbols in the Text area.

• Pressing L shifts between upper-case and
lower-case alphabetical characters.

•

K and L scroll through the characters and

symbols for input.

Press

K

(space)

(space)

x

A to Z0 to 9

a to z 0 to 9

0 to 9

H to move the cursor back to the left.

Press

J to move the cursor to

text

L

* to ,

* to ,

(space)

J to move the