Casio MO1008-EA, 5161 User Manual
MO1008-EA
Operation Guide 5161
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.
• 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.
E E-1
• The watch continues to operate, even when it is not exposed to light. Leaving the
watch in the dark can cause the battery to run down, which will result in some watch
functions to be disabled. If the battery goes dead, you will have to re-configure watch
settings after recharging. To ensure normal watch operation, be sure to keep it
exposed to light as much as possible.
Battery charges in the light. Battery discharges in the dark.
Solar cell
(Converts light to
electrical power.)
E-2
About This Manual
• Depending on the model of your watch, display text appears either as dark figures
on a light background, or light figures on a dark background. All sample displays in
this manual are shown using dark figures on a light background.
• Button operations are indicated using the letters shown in the illustration.
• Each section of this manual provides you with the information you need to perform
operations in each mode. Further details and technical information can be found in
the “Reference” section.
Bright Light
LEVEL 1
LEVEL 2
LEVEL 3
Charge
LEVEL 4
Rechargeable battery
Electrical
energy
All
functions
enabled
Dis-
charge
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Some or all
functions
disabled
Keep the watch exposed to bright light
Bright Light
l
l
l
l
l
l
l
Solar cell
• The actual level at which some functions are disabled depends on the watch model.
• Frequent display illumination can run down the battery quickly and require charging.
The following guidelines give an idea of the charging time required to recover from a
single illumination operation.
Approximately 5 minutes exposure to bright sunlight coming in through a window
Approximately about 8 hours exposure to indoor fluorescent lighting
• Be sure to read “Power Supply” (page E-45) for important information you
need to know when exposing the watch to bright light.
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch’s Power Saving function
has turned off the display to conserve power.
• See “Power Saving Function” (page E-69) for more information.
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.
The electricity generated by the solar cell of the watch is
stored by a rechargeable battery. Leaving or using the
l
l
l
l
watch where it is not exposed to light causes the battery
to run down. Make sure the watch is exposed to light as
much as possible.
• When you are not wearing the watch on your wrist,
position the face so it is pointed at a source of bright
light.
• You should try to keep the watch outside of your sleeve
as much as possible. Charging is reduced significantly if
the face is covered only partially.
Contents
General Guide ......................................................................................................... E-8
Radio-controlled Atomic Timekeeping ............................................................... E-11
World Time ............................................................................................................. E-32
Alarms ....................................................................................................................E-35
Stopwatch ..............................................................................................................E-40
Countdown Timer .................................................................................................. E-42
Power Supply ........................................................................................................ E-45
Timekeeping .......................................................................................................... E-53
Adjusting Home Positions ................................................................................... E-63
Reference .............................................................................................................. E-67
Specifications ....................................................................................................... E-76
E-3
E-4
Procedure Lookup
The following is a handy reference list of all the operational procedures contained in
this manual.
To specify your Home City ................................................................................... E-12
To perform manual receive .................................................................................. E-25
To turn auto receive on and off ........................................................................... E-27
To view the latest signal reception results .........................................................E-28
To view the time in another city........................................................................... E-33
To toggle a city code time between Standard Time and
Daylight Saving Time ...................................................................................... E-34
To set an alarm time ............................................................................................. E-36
To turn the Hourly Time Signal on and off ..........................................................E-38
E-6
General Guide
• Press B to change from mode to mode.
• In any mode, press A to illuminate the face of the watch.
• Holding down B for at least two seconds at any time will return directly to the
Timekeeping Mode.
Timekeeping Mode
Press B.
Battery/Receive Mode
▲
▲
E-5
To turn off all alarms and the Hourly Time Signal .............................................. E-39
To measure times with the stopwatch ................................................................ E-40
To configure the countdown timer ...................................................................... E-43
To use the countdown timer ................................................................................ E-44
To set the time and date manually ...................................................................... E-54
To change the Daylight Saving Time (summer time) setting ............................ E-59
To adjust home positions..................................................................................... E-64
To turn the button operation tone on and off .....................................................E-68
To recover from the sleep state ........................................................................... E-70
E-7
World Time Mode Alarm Mode
▲
Countdown Timer Mode
▲
Stopwatch Mode
▲
▲
E-9E-8
Operation Guide 5161
Switching the Display Screen
In the Timekeeping Mode, each press of C changes the contents of the digital
display.
Date Screen
Day
Press C.
▲
Receiving
Indicator and
Seconds Count
▲
Day of week
E-10
• The U.S. time calibration signal can be picked up by the watch while in North
America. The term “North America” in this manual refers to the area that consists of
Canada, the continental United States, and Mexico.
• As of March 2010, 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.
• Using this watch in a country covered by a time calibration that is different from the
countries it supports may result in incorrect time indication due to local application of
summer time, etc.
To specify your Home City
E-12
4. Press A to exit the setting screen.
• Normally, your watch should show the correct time as soon as you select your Home
City code. If it does not, it should adjust automatically after the next auto receive
operation (in the middle of the night). You also can perform manual receive (page
E-25) or you can set the time manually (page E-54).
• The watch will receive the time calibration signal automatically from the applicable
transmitter (in the middle of the night) and update its settings accordingly. For
information about the relationship between city codes and transmitters, see page
E-18 and “Transmitters” (page E-72).
• See the maps under “Approximate Reception Ranges” (page E-19) for information
about the reception ranges of the watch.
• You can disable time signal reception, if you want. See “To turn auto receive on and
off” on page E-27 for more information.
• Under factory default settings, auto receive is turned off for all of the following city
codes: HNL (Honolulu) and ANC (Anchorage). For details about turning on auto
receive for these city codes, see “To tur n auto receive on and off” on page E-27.
Current Time
C
Screen
1. In the Timekeeping Mode, hold down A for about three
seconds. You can release the button after “ADJ”
appears on the display.
• At this time, “12H” (12-hour timekeeping) or “24H” (24-
hour timekeeping) also will be flashing on the display.
Receiving indicator
Appears when reception
is successful.
▲
C
Hour : MinutesPM indicator
Seconds
Radio-controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly.
• This watch is designed to pick up the time calibration signals transmitted in Germany
(Mainflingen), England (Anthorn), the United States (Fort Collins), China (Shangqiu),
and Japan (Fukushima, Fukuoka/Saga).
Current Time Setting
This watch adjusts its time setting automatically in accordance with a time calibration
signal. You also can perform a manual procedure to set the time and date, when
necessary.
• The first thing you should do after purchasing this watch is to specify your
Home City (the city where you normally will use the watch). For more
information, see “To specify your Home City” (page E-12).
• When using the watch outside the areas covered by the time signal transmitters, you
will have to adjust the current time setting manually as required. See “Timekeeping”
(page E-53) for more information about manual time settings.
E-11
2. Press B.
• The city code of the current Home City will flash,
which indicates the setting screen.
3. Press C (east) to select the city code you want to use
as your Home City.
LON : London
City code
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal:
auto receive and manual receive.
• Auto Receive
With auto receive, the watch receives the time calibration signal automatically up to
6 times a day (5 times a day for the Chinese calibration signal). When any auto
receive is successful, the remaining auto receive operations are not performed. For
more information, see “About Auto Receive” (page E-22).
• Manual Receive
Manual receive lets you start a time calibration receive operation with the press of a
button. For more information, see “To perform manual receive” (page E-25).
PAR :Paris
ATH : Athens
HKG: Hong Kong
TYO : Tokyo
HNL : Honolulu
ANC :Anchorage
LAX : Los Angeles
DEN :Denver
CHI : Chicago
NYC :New York
E-13
E-14
Important!
• When getting ready to receive the time calibration signal, position the watch as
shown in the nearby illustration, with its 12 o’clock side pointing towards a window.
This watch is designed to receive a time calibration signal late at night. Because of
this, you should place the watch near a window as shown in the illustration when you
take it off at night. Make sure there are no metal objects nearby.
12 o’clock
or
• Make sure the watch is facing the right way.
E-16
• The time calibration signal the watch will attempt to pick up depends on its current
Home City code setting as shown below.
Home City Code
LON, PAR, ATH
HKG
TYO
HNL*, ANC*, LAX,
DEN, CHI, NYC
* The areas covered by the HNL and ANC city codes are quite far from the time
calibration signal transmitters, and so certain conditions may cause problems with
signal reception.
• Calibration signal reception is disabled while a countdown timer operation is in
progress.
E-18
Transmitter
Anthorn (England)
Mainflingen (Germany)
Shangqiu City (China)
Fukushima (Japan)
Fukuoka/Saga (Japan)
Fort Collins, Colorado
(the United States)
Frequency
60.0 kHz
77.5 kHz
68.5 kHz
40.0 kHz
60.0 kHz
60.0 kHz
E-15
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
Near
Anthorn
Inside a
vehicle
household
appliances,
office
equipment,
or a mobile
phone
Near a
construction
site, airport,
or other
sources of
electrical
noise
Mainflingen
Inside or
among
buildings
• Signal reception normally is better at night than during the day.
• Time calibration signal reception takes from three to eight minutes, but in some
cases it can take as long as 16 minutes. Take care that you do not perform any
button operations or move the watch during this time.
Approximate Reception Ranges
U.K. and German Signals
1,500 kilometers
500 kilometers
The Anthorn signal
is receivable within
this area.
Near hightension power
lines
U.S. Signal
Among or
behind
mountains
E-17
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
E-19
Operation Guide 5161
Japan Signals
500 kilometers
Fukuoka/Saga
1,000 kilometers
500 kilometers
Fukushima
1,000 kilometers
China Signal
1,500 kilometers
500 kilometers
Chengdu
E-20
About Auto Receive
The watch receives the time calibration signal automatically up to 6 times a day
(5 times a day for the Chinese calibration signal). When any auto receive is
successful, the remaining auto receive operations are not performed. The reception
schedule (calibration times) depends on your currently selected Home City, and
whether standard time or Daylight Saving Time is selected for your Home City.
Your Home City
Standard Time
LON
Daylight Saving Time
Standard Time
PAR
Daylight Saving Time
Standard Time
ATH
Daylight Saving Time
Standard Time and
HKG
Daylight Saving Time
E-22
Note
• When a calibration time is reached, the watch will receive the calibration signal only
if it is in either the Timekeeping Mode or World Time Mode. Reception is not
performed if a calibration time is reached while you are configuring settings.
• Auto receive of the calibration signal is designed to be performed early in the
morning, while you sleep (provided that the Timekeeping Mode time is set correctly).
Before going to bed for the night, remove the watch from your wrist, and put it in a
location where it can receive the signal easily.
• Remember that reception of the calibration signal depends on the current time in the
Timekeeping Mode. The receive operation will be performed whenever the display
shows any one of the calibration times, regardless of whether or not the displayed
time actually is the correct time.
E-24
Shangqiu
1
1:00 am
2:00 am
2:00 am
3:00 am
3:00 am
4:00 am
1:00 am
Auto Receive Start Times
2
2:00 am
3:00 am
3:00 am
4:00 am
4:00 am
5:00 am
2:00 am
3
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight*
3:00 am
4
4:00 am
5:00 am
5:00 am
Midnight*
Midnight*
1:00 am*
4:00 am
5
5:00 am
Midnight*
Midnight*
1:00 am*
1:00 am*
2:00 am*
5:00 am
Changchun
Beijing
Shanghai
Hong Kong
6
Midnight*
1:00 am*
1:00 am*
2:00 am*
2:00 am*
3:00 am*
• Signal reception may not be possible at the distances noted below during certain
times of the year or day. Radio interference also may 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: 1,500 kilometers (910 miles)
• Even when the watch is within the reception range of the transmitter, signal
reception will be impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source.
• Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
• See the information under “Signal Reception Troubleshooting” (page E-29) if you
experience problems with time calibration signal reception.
Your Home City
TYO
Standard Time
HNL
Standard Time and
ANC
Daylight Saving Time
LAX
DEN
CHI
NYC
Midnight
Midnight
Auto Receive Start Times
234516
1:00 am
2:00 am
3:00 am
4:00 am
1:00 am
2:00 am
3:00 am
4:00 am
5:00 am
5:00 am
*Next day
To perform manual receive
Receiving
READY (or R)
1. While in the Timekeeping Mode or Battery/Receive
Mode, hold down C for about two seconds.
• The second hand will move to READY (R) and signal
reception will start.
• The digital display will go blank at this time.
• The second hand will indicate the current reception
status.
READY (or R): Unstable
WORK (or W) : Stable
• Keep the watch in a location where reception is stable
while a receive operation is in progress.
• Signal reception takes from three to eight minutes, but
in some cases it can take as long as 16 minutes. Take
care that you do not perform any button operations or
move the watch during this time.
• Even under optimum reception conditions, it can take
about 30 seconds for reception to stabilize.
E-21
E-23
E-25
• Check the second hand position to find out the status of a receive operation and to
determine the best location for signal reception.
• Note that weather, the time of day, surroundings, and other factors all can affect
reception.
Note
To cancel an ongoing signal receive operation, press any button.
When reception is successful
Receive successful
Receive successful indicator
E-26
4. Press C to toggle auto receive on (ON) and off (OFF).
After the setting is the way you want, press A to exit the setting mode.
5. To return to the Timekeeping Mode, hold down B for at least two seconds.
To view the latest signal reception results
1. In the Timekeeping Mode, press B to enter the Battery/Receive Mode.
2. Press C to display the date and time of the last successful signal reception.
• To return to the Timekeeping Mode, hold down B for at least two seconds.
• If there have been no successful receptions, the time will show “- -:- -”.
E-28
• “GET” appears when reception is complete, and the
watch adjusts its current time setting.
• To return to the Timekeeping Mode after “GET” appears,
press B or C, or do not perform any operation for one
or two minutes.
• The receive successful indicator is displayed after a
successful receive operation.
1 second
▲
▲
1 second
1 second
▲
When reception fails
• The watch displays “ERROR” without adjusting the current time setting.
• To return to the Timekeeping Mode after “ERROR” appears, press B or C, or do
not perform any operation for one or two minutes.
• Once any receive operation is successful, the receive successful indicator will
remain on the display for the rest of the day, even if other receive operations fail.
To turn auto receive on and off
On/Off status
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem Probable Cause
Cannot perform
manual receive.
Auto receive is
turned on, but the
receive successful
indicator does not
appear on the
display.
1. In the Timekeeping Mode, press B to enter the
Battery/Receive Mode.
2. Press C to display the date and time of the last
successful signal reception.
3. Hold down A until the current auto receive setting (ON
or OFF) starts to flash. This is the setting screen.
• Note that the setting screen will not appear if the
currently selected Home City is the one that does not
support time calibration reception.
• For information about city codes that support signal
receive, see “To specify your Home City” (page E-12).
• The watch is not in the
Timekeeping Mode.
• Your current Home City is not
one of the following: LON, PAR,
ATH , HKG, TYO, HNL, ANC,
LAX, DEN, CHI, or NYC
• A countdown timer operation is
in progress.
• You changed the time setting
manually.
• The DST setting was changed
manually.
• You pressed a button while
signal receive was in progress.
What you should do
• Enter the Timekeeping Mode
and try again.
• Select LON, PAR , ATH, HKG,
TYO, HNL, ANC, LAX, DEN,
CHI, or NYC as your Home
City (page E-12).
• Enter the Countdown Timer
Mode and stop the countdown
(page E-42).
• Perform manual signal receive
or wait until the next auto
signal receive operation is
performed.
E-27
E-29
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