1
Operation Guide 5061
MA1111-EC
Congratulations upon your selection of this CASIO watch.
This watch does not have a city code that corresponds to the UTC offset of –3.5
hours. Because of this, the radio-controlled atomic timekeeping function will not
display the correct time for Newfoundland, Canada.
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 this product or
its malfunction.
About This Manual
Button operations are indicated using the letters A
through D shown in the illustration.
Hand Functions
z Hour Hand
x Second Hand
c Minute Hand
v Left Dial Hand: Indicates the current mode.
b Lower Dial Hand
n Right Dial Hands: Indicate a time, in 24-hour format,
depending on the current mode.
m Day
This User’s Guide uses numbers shown above to identify
watch hands and indicators.
Things to check before using the watch
1. Hold down C for about two seconds to enter the Timekeeping Mode, and
then observe the movement of the
x Second Hand.
2. Check the Home City and the daylight saving time (DST) setting.
Use the procedure under “To configure Home City settings” to configure your Home
City and daylight saving time settings.
Important!
Proper time calibration signal reception and World Time settings depend on correct
Home City, time, and date settings in the Timekeeping Mode. Make sure you
configure these settings correctly.
3. Set the current time.
To set the time using a time calibration signal •
See “To get ready for a receive operation”.
To set the time manually •
See “Configuring Current Time and Date Settings Manually”.
The watch is now ready for use.
For details about the watch’s radio controlled timekeeping feature, see “Radio •
Controlled Atomic Timekeeping”.
Is the x Second Hand moving smoothly in one-second steps?
Is the x Second Hand jumping every two
seconds or is it stopped completely?
Go to step 2.
The watch is charged sufficiently.
For details about charging, see
“Charging the Watch”.
Power is low. Charge the watch by placing
it in a location where it is exposed to light.
For details, see “Charging the Watch”.
NO
YES
YES
NEXT
Charging the Watch
The face of the watch is a solar cell 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, be sure
to leave it in a location
where it is exposed to light.
Best charging •
performance is achieved
by exposing the watch to
light that is as strong as
possible.
When wearing the watch,
makes sure that its face is
not blocked from light by the
sleeve of your clothing.
The watch may enter a •
sleep state if its face is
blocked by your sleeve
even only partially.
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 •
Important!
Keep the watch 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.
Make sure that the watch is exposed to bright light whenever possible.
Power Levels
You can get an idea of the watch’s power level by
observing the movement of the
x Second Hand in the
Timekeeping Mode.
If the •
x Second Hand is moving normally in one-second
steps, power is at Level 1.
If the •
x Second Hand is jumping at two-second steps,
power is at Level 2, which is quite low. Expose the watch
to light as soon as possible so it can charge.
Jumps every two seconds.
Level Hand Movement Function Status
1 Normal. All functions enabled.
2
x Second hand jumps in 2-second steps.
m Day changes to home position.
Beeper, time calibration signal
reception, and countdown timer
operation disabled.
3
x Second hand stopped.
z Hour and c Minute hands stopped at
12 o’clock.
All functions disabled.
When power drops to Level 3, all functions will be disabled but the watch will •
continue to keep time internally for about one week. If you recharge the battery
sufficiently during this period, the analog hands will move automatically to the
correct setting and normal timekeeping will resume. After one week, all settings
(including timekeeping) will be cleared. Recharging the battery will reset all settings
to their initial factory defaults.
Power Recovery Mode
The watch is designed to go into a power recovery mode that stops hand operation
temporarily whenever power suddenly drops below a certain level due to overuse
of the alarm tone over a short period. Note that all operations are disabled while the
watch is in the power recovery mode.
The hands will move to the correct positions and the watch will resume normal
operation after power recovers (in about 15 minutes). Putting the watch in a location
where it is exposed to light will help power to recover sooner.
Charging Times
Exposure Level (Brightness)
Daily
Operation
*1
Level Change *2
Level 3 Level 2 Level 1
Outdoor sunlight (50,000 lux) 8 min. 2 hours 23 hours
Sunlight through a window (10,000 lux) 30 min. 6 hours 85 hours
Daylight through a window on a cloudy
day (5,000 lux)
48 min. 8 hours 138 hours
Indoor fluorescent lighting (500 lux) 8 hours 92 hours – – –
1 Approximate amount exposure time required each day to generate enough power *
for normal daily operation.
2 Approximate amount exposure time 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 the Specifications.
Power Saving
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.
There actually are two sleep state levels: “second hand sleep” and “function sleep”. •
Elapsed Time in Dark Operation
60 to 70 minutes (second hand
sleep)
x Second hand only is stopped at 12 o’clock, all other
functions are enabled.
6 or 7 days (function sleep)
All functions, including analog timekeeping, disabled •
Internal timekeeping maintained. •
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 or •
Countdown Timer Mode.
To recover from the sleep state
Move the watch to a well-lit area or press any button.
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General