Casio 5131 Operation Manual

MA1002-EA
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
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 at least two seconds to enter the Timekeeping Mode, and then observe the
movement of the x Second Hand.
Is the x Second Hand moving smoothly at one-second intervals?
NO
Is the x Second Hand moving at two-second intervals
or is it stopped completely?
YES
Power is low. Charge the watch by placing it in a
location where it is exposed to light. For details, see
"Charging the Watch".
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".
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.
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.
Operation Guide 5131 (OC)
current mode.
YES
The watch is charged sufficiently. For
details about charging, see "Charging
the Watch".
NEXT
Go to step 2.
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.
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 at one-second intervals, power is
at Level 1.
•
If the x Second Hand is moving at two-second intervals, power is at Level
2, which is quite low. Expose the watch to light as soon as possible so it
can charge.
Level Hand Movement
1 Normal.
x Second Hand moves at two-second
2 intervals.
m Day changes to 1 (home position).
Moves at two-second
x Second Hand stopped.
intervals.
3 z Hour Hand and c Minute Hand
stopped at 12 o'clock.
•
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 regular 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)
Outdoor sunlight (50,000 lux)
Window sunlight (10,000 lux)
Window sunlight on cloudy day (5,000 lux)
Indoor fluorescent lighting (500 lux)
* 1 Approximate exposure each day to generate power for normal daily operation.
2 Approximate exposure to take power up one level.
*
•
The above times are for reference only. Actual 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 stopped at 12 o'clock, all other functions enabled
•
All functions, including analog timekeeping, disabled
6 or 7 days (function sleep)
• 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
To recover from the sleep state
Move the watch to a well-lit area or press any button.
Radio Controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly. However, when
using the watch outside of areas covered by time calibration signals, you will have to adjust the settings
manually as required. See "Configuring Current Time and Date Settings Manually" for more information.
This section explains how the watch updates its time settings when the city code selected as the Home
City is in Japan, North America, Europe, or China, and is one that supports time calibration signal
reception.
If your Home City Code setting is this:
LONDON (LON), PARIS (PAR), ATHENS (ATH)
HONG KONG (HKG)
TOKYO (TYO)
HONOLULU (HNL), ANCHORAGE (ANC),
LOS ANGELES (LAX), DENVER (DEN),
CHICAGO (CHI), NEW YORK (NYC)
Important!
•
The areas covered by HONOLULU (HNL) and ANCHORAGE (ANC) are quite far from the calibration
signal transmitters, so certain conditions may cause reception problems.
• When HONOLULU (HNL) or HONG KONG (HKG) is selected as the Home City, only the time and date
are adjusted according to the time calibration signal. You need to switch manually between standard
time and daylight saving time (DST) if required. See "To toggle the Home City time between standard
time and daylight saving time" for information about how to do this.
Function Status
All functions enabled
Beeper, time calibration signal
reception, and countdown timer
operation disabled
All functions disabled
Level Change *2
Daily
Level 3 Level 2
Operation *1
8 minutes 2 hours
30 minutes 6 hours
48 minutes 9 hours
8 hours 92 hours
Countdown Timer Mode.
or
The watch can receive the signal from the transmitter
located here:
Anthorn (England), Mainflingen (Germany)
Shangqiu City (China)
Fukushima (Japan), Fukuoka/Saga (Japan)
Fort Collins, Colorado (United States)
Level 1
23 hours
85 hours
138 hours
– – –
1