Casio 1803 Watch User Manual


 
1803-1
Module No. 1803
GENERAL GUIDE
A
CD
L
B
L
Countdown Alarm Mode Stopwatch Mode
Timekeeping Mode
Telememo Mode
Alarm Mode
Press C
(Light)
If the digital display of your watch is continually changing, see
“About Auto Display” for information on how to stop it.
Press C to change from mode to mode. After you perform an operation in
any mode, pressing C returns to the Timekeeping 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.
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.
Hour
Seconds
Day
Minutes
12/24-Hour
Format
Year
Month
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 and 1 is added to the minutes. If the seconds count
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 (
12H) and 24-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.
A
CD
L
B
L
Hold down B
Day of week
Month – Day
Year
Hour : Minutes
Seconds
PM indicator
Battery power
indicator
Telememo Mode ScreenTimekeeping Screen
A
CD
L
B
BACKLIGHT
The backlight uses an EL (electro-luminescent)
panel that cause the entire display to glow for
easy reading in the dark. The watch’s auto light
switch automatically turns on the backlight when
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.
Note
The electro-luminescent panel 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 vibration of the EL panel when it is lit. It does not indicate
malfunction of the watch.
The backlight automatically turns off whenever an alarm sounds.
Auto light switch
on indicator
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
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.
Parallel to
ground
More
than
40°