Casio 1803 General Manual

Module No. 1803
• If the digital display of your watch is continually changing, see
"About Auto Display" for information on how to stop it.
Timekeeping Mode
A
C
L
Countdown Alarm Mode
TIMEKEEPING MODE
In addition to normal timekeeping, use the Timekeeping Mode to set the current
time and date.
• Holding down B in the Timekeeping Mode displays the data item that was
on the display when you last exited the Telememo Mode.
Timekeeping Screen
Day of week
Year
A
Battery power
indicator
C
L
PM indicator
Hour : Minutes
• In the Timekeeping Mode, press L to illuminate the display. Pressing L
illuminates the display even while you are setting the time and date.
• The battery power indicator shows current remaining battery capacity. Certain
functions of this watch may be temporarily disabled when battery power is
low. For details, see "Battery Power Indicator".
To set the time and date
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 selected .
2. Press C to change the selection in the following sequence.
Seconds
Day
3. While the seconds digits are selected (flashing), press D to reset the seconds
to .
00
• If you press D while the seconds count is in the range of 30 to 59, the
seconds are reset to 00
is in the range of 00 to 29, the minutes count is unchanged.
4. While hour, minutes, year, month, or day is selected (flashing), press D to
increase the selection or B to decrease it. The 12/24-hour setting is selected
(flashing), press D to switch between the 12-hour (
24H
( ) formats.
• Holding down either button changes the current selection at high speed.
• 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 and the A (AM) indicator
appears to the left of the hour digits for times in the range of midnight to 11:59
am.
• The 24-hour format is indicated by 24 on the display. Times are shown in the
range of 00:00 to 23:59.
5. After you set the time and date, 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.
B
Press C
D
(Light)
Telememo Mode Screen
Month – Day
B
Hold down B
D
Seconds
12/24-Hour
Hour Minutes
Format
Month
and 1 is added to the minutes. If the seconds count
12H

GENERAL GUIDE

• Press C to change from mode to mode. After you perform an operation in
any mode, pressing C returns to the Timekeeping Mode.
Stopwatch Mode
A
C
• 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 vibration of the EL panel when it is lit. It does not indicate
L
malfunction of the watch.
• The backlight automatically turns off whenever an alarm sounds.
To manually turn on the backlight
Depending on the mode, pressing L or D turns on the backlight for about two
seconds. See the sections that cover each mode for information on whether
you should press L or D.
• The backlight remains lit for about two seconds from the point you press the
button, even if it is already lit when you press the button. If you keep the
button depressed for five seconds or more, the backlight automatically turns
off.
• The above operation turns on the backlight regardless of the current auto
light switch setting.
About the Auto Light Switch
Turning on the auto light switch causes the backlight to turn on whenever you
position your wrist as described below. Note that the auto light switch of this
watch will operate only when available light is below a certain level. It does not
Year
turn on the backlight under bright light.
• Avoid wearing the watch on the inside of your wrist. Doing so causes the
auto light switch to operate when it is not needed, which shortens battery life.
Moving the watch to a position that is parallel to the ground and then tilting it
towards you more than 40 degrees causes the backlight to light.
) and 24-hour
Telememo Mode
L
BACKLIGHT
The backlight uses an EL (electro-luminescent)
Auto light switch
panel that cause the entire display to glow for
on indicator
easy reading in the dark. The watch's auto light
switch automatically turns on the backlight when
B
you angle the watch towards your face.
• The auto light switch must be turned on
(indicated by the auto light switch on indicator)
for it to operate.
D
Note
L
• The electro-luminescent panel loses
illuminating power after very long use.
Parallel to
ground
1803-1
Alarm Mode
More
than
40°