Casio 5076 Owner's Manual
MA0908-EA
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Operation Guide 5076 (OC)
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.
Button operations are indicated using the letters A through D shown in the
illustration.
Hand Functions
Regular timekeeping
z Hour Hand
x Second Hand
c Minute Hand
v Day of the Week Hand
b Day
World Time
n World Time Hour Hand: Indicates the current time in the World Time City in 24-hour format.
m World Time Minute Hand
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 regular timekeeping, and then observe the movement
x Second Hand.
of the
Is the x Second Hand moving smoothly at one-second intervals?
Is the x Second Hand moving at two-second intervals
or is it stopped completely?
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
The watch is charged sufficiently. For details
about charging, see “Charging the Watch”.
Go to step 2.
YES
NEXT
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, Home Time,
and Home Date settings. 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
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
Moves at two-second
intervals.
Whenever you are not wearing
the watch, 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.
You can get an idea of the watch’s power level by observing the movement of the
x Second Hand.
If the • x Second Hand is moving normally at one-second intervals, power is at
Level 1.
x Second Hand is moving at two-second intervals, power is at Level 2,
If the •
which is quite low. Expose the watch to light as soon as possible so it can
charge.
Level Hand Movement Function Status
1 Normal All functions enabled
x Second Hand moves at two-second
2
intervals.
b Day changes to 1 (home position).
x Second Hand stopped.
3
z Hour Hand and c Minute Hand stopped
at 12 o’clock.
When wearing the watch, make
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.
Time calibration signal reception
disabled
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 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.
Charging Times
Exposure Level (Brightness)
Outdoor sunlight (50,000 lux) 8 minutes 2 hours 24 hours
Window sunlight (10,000 lux) 30 minutes 6 hours 89 hours
Window sunlight on cloudy day (5,000 lux) 48 minutes 9 hours 145 hours
Indoor fluorescent lighting (500 lux) 8 hours 98 hours – – –
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)
6 or 7 days (function sleep)
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.
To recover from the sleep state
Move the watch to a well-lit area or press any button.
Daily Operation
*1
x Second Hand only stopped at 12 o’clock, all other functions enabled
All functions, including analog timekeeping, disabled •
Internal timekeeping maintained •
Level Change *2
Level 3 Level 2 Level 1
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) Anthorn (England), Mainflingen (Germany)
HONG KONG (HKG) Shangqiu City (China)
TOKYO (TYO) Fukushima (Japan), Fukuoka/Saga (Japan)
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.
Approximate Reception Ranges
UK and German Signals North American Signal
Anthorn
500 kilometers
1,500 kilometers
The Anthorn signal is receivable
within this area.
Japanese Signal Chinese Signal
500 kilometers
Fukuoka/Saga
Even when the watch is within range of a transmitter, signal reception may be impossible due to the effects •
of geographic contours, structures, weather, the time of year, the time of day, radio interference, etc. The
signal becomes weaker at distances of approximately 500 kilometers, which means that the influence of the
above conditions becomes even greater.
Signal reception may not be possible at the distances noted below during certain times of the year or day. •
Radio interference may also cause problems with reception.
Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers (310 miles) −
Fort Collins (United States) transmitter: 600 miles (1,000 kilometers) −
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles) −
Shangqiu (China) transmitter: 500 kilometers (310 miles) −
As of January 2009, China does not use Daylight Saving Time (DST). If China does go to the Daylight •
Saving Time system in the future, some functions of this watch may no longer operate correctly.
Mainflingen
Fukushima
1,000 kilometers
The watch can receive the signal from
the transmitter located here:
Fort Collins, Colorado (United States)
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
Changchun500 kilometers
Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong
1,500 kilometers
1
Operation Guide 5076 (OC)
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To get ready for a receive operation
Check to make sure the watch is in the regular timekeeping mode. If it isn’t, hold down 1. C for about two
seconds to enter the regular timekeeping mode.
The antenna of this watch is located on its 6 o’clock side. Position the watch with 6 o’clock facing towards a 2.
window as shown in the nearby illustration. Make sure there are no metal objects nearby.
6 o’clock
or
Inside or among
buildings
What you should do next depends on whether you are using Auto Receive or Manual Receive.3.
Auto Receive: Leave the watch over night in the location you selected in step 2. See “Auto Receive” for •
details.
Manual Receive: Perform the operation under “To perform manual receive”. •
Auto Receive
With Auto Receive, the watch performs the receive operation each day automatically up to six times (up to •
five times for the Chinese calibration signal) between the hours of midnight and 5 a.m. (according to the
Home City time). When any receive operation is successful, none of the other receive operations for that
day are performed.
The receive operation is not performed if a calibration time is reached while you are configuring settings. •
To perform manual receive
In the regular timekeeping mode, keep 1. A depressed (for about two seconds) as the
through the following sequence.
Moves to • YES (or Y for some models) or NO (N) to indicate the last signal reception result, then to
READY (R).
The 2.
x Second Hand indicates the operations the watch is currently performing.
Radio-controlled Atomic Timekeeping Precautions
Strong electrostatic charge can result in the wrong time setting. •
Even if a receive operation is successful, certain conditions can cause the time setting to be off by up to •
one second.
The watch is designed to update the date and day of the week automatically for the period January 1, 2000 •
to December 31, 2099. Updating of the date by signal reception will no longer be performed starting from
January 1, 2100.
If you are in an area where signal reception is not possible, the watch keeps time with the precision noted •
in “Specifications”.
The receive operation is disabled under any of the following conditions. •
While power is at Level 2 or lower −
When the watch is in the function sleep state (“Power Saving”) −
Inside a vehicle Near household
When the x Second Hand is
pointed here:
READY (R) Watch is setting up for reception.
WORK (W) Reception is in progress.
YES (Y) Reception was completed successfully.
NO (N) Reception failed for some reason.
If signal reception is unstable, the • x Second Hand may move between
WORK (W) and READY (R).
The receive operation is complete when the 3.
or NO (N) for about five seconds, and then resumes regular timekeeping.
You can return to regular timekeeping manually by pressing • A while the
x Second Hand is pointing to YES (Y) or NO (N).
When the receive operation is successful, the watch adjusts the time setting •
accordingly. It does not adjust the setting if the operation failed.
Note
To interrupt a receive operation and return to the regular timekeeping, press •
any button.
To check the result of the latest receive operation
In the regular timekeeping mode, press A.
The •
x Second Hand will move to YES (Y) for five seconds if the latest receive
operation was successful, or NO (N) if it was not. After that, regular timekeeping
will resume.
You can return to regular timekeeping manually by pressing • A while the
x Second Hand is pointing to YES (Y) or NO (N).
Note
The •
x Second Hand will indicate NO (N) if you have adjusted the time or date
setting manually since the latest receive operation.
Signal reception normally is better at night. •
The receive operation takes from two to seven minutes, but •
in some cases it can take as long as 14 minutes. Take care
that you do not perform any button operation or move the
watch during this time.
Signal reception may be difficult or even impossible under •
the conditions described below.
appliances,
office equipment,
or a mobile
phone
Near a
construction
site, airport, or
other sources of
electrical noise
It means this:
Near
high-tension
power lines
x Second Hand moves to YES (Y)
Among or behind
mountains
x Second Hand goes
Mode Reference Guide
Your watch has two timekeeping modes, and a number of setting modes. The timekeeping mode you should
select depends on what you want to do.
To do this: Enter this mode:
View the current time in your Home City and in one of 29 other cities around the globe •
View the current date in the Home City •
Configure Home City and daylight saving time (DST) settings •
Perform a time calibration receive operation •
Configure time and date settings manually •
Select one of 29 cities (time zones) around the world and view the current time there •
Select daylight saving/summer time (DST) or standard time for a time zone •
Selecting a Mode
With this watch, everything starts from the regular timekeeping mode.
To determine the watch’s current mode
Check the position of the
mode”.
To return to the regular timekeeping mode from another mode
Hold down C for about two seconds until the
moving again.
To select a mode
Starting from the regular timekeeping mode, press C to toggle between the regular timekeeping mode and
the World Time setting mode. You can tell what mode is currently selected by checking the
Hand, as described below.
Regular timekeeping mode
The hand indicates the day of the week (Su, Mo,
Tu, We, Th, Fr, Sa).
v Day of the Week Hand as shown under “To select a
World Time setting mode
In the World Time setting mode, the short end
of the hand indicates whether the time for the
currently selected World Time City is standard time
(STD) or daylight saving/summer time (DST).
Regular timekeeping mode
World Time setting mode
x Second Hand stops and then starts
v Day of the Week
Timekeeping
Hand Functions
Regular timekeeping
z Hour Hand
x Second Hand
c Minute Hand
v Day of the Week Hand
b Day
World Time
n World Time Hour Hand: Indicates the current time in the World Time City in
m World Time Minute Hand
To return to regular timekeeping from any other mode or function, hold down • C
for about two seconds.
24-hour format.
Configuring Home City Settings
There are two Home City settings: actually selecting the Home City and selecting either standard time or
daylight saving time (DST).
To configure Home City settings
Note that you cannot switch between • STD (standard time)/DST (daylight saving time) while UTC is
selected as your Home City.
After all the settings are the way you want, press 4. A to return to regular timekeeping.
Note
This watch does not have a city code that corresponds to Newfoundland. •
In the regular timekeeping mode, keep 1. A depressed (for about five seconds) as
the
x Second Hand goes through the following sequence.
Moves to • YES (or Y for some models) or NO (N) to indicate the last signal
reception result, then to READY (R), and then to the city code of the currently
selected Home City.
This is the city code setting mode. •
The watch will exit the setting mode automatically if you do not perform any •
operation for about two or three minutes.
For details about city codes, see the “City Code Table”. •
To change the Home City setting, press 2. D to move the
clockwise.
Keep pressing • D until the
want to select as your Home City.
Each time you change the city code setting, the •
b Day move to the current time and date for that city code. Do not
Hand and
perform the next operation until these hands stop moving.
Press 3. B to toggle the time for the currently selected city code between STD
(standard time)/DST (daylight saving time).
While you are selecting the Home City code, the short end of the •
Week Hand will indicate whether the currently selected city code is configured
for standard time (STD) or daylight saving/summer time (DST).
x Second Hand is pointing at the city code you
x Second Hand
z Hour Hand, c Minute
v Day of the
2
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