Casio 4361 Operation Manual Download Page 2

Operation Guide 4361

2

Proper signal reception can be difficult or even impossible under the conditions listed
below.

Signal reception is normally better at night than during the day.

Time calibration signal reception 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 operations or move the watch during this time.

Inside or
among
buildings

Inside a
vehicle

Near
household
appliances,
office
equipment,
or a mobile
phone

Near a
construction
site, airport, or
other sources
of electrical
noise

Near high-
tension
power lines

Among or
behind
mountains

When within range of the applicable transmitter, this watch can receive either the

   Germany (Mainflingen) or England (Rugby) time calibration signals.

See “Transmitters” for more information.

This watch is designed to receive the time calibration signal transmitted from
Mainflingen, Germany and the signal from Rugby, England.  Signal reception is
possible within the area represented by a circle with a radius of about 1,500
kilometers.

Rugby

Mainflingen

1,500 kilometers

500 kilometers

At distances further than about 500 kilometers from a transmitter, signal reception
may not be possible during certain times of year or times of day. Radio interference
may also cause problems with reception.

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 Receive Troubleshooting” if you experience
problems with time calibration signal reception.

About Auto Receive

With auto receive, the watch receives the time calibration signal automatically five or
six times a day. When the second or third receive is successful, the remaining auto
receive operations are not performed. The reception schedule (calibration times)
depends on your currently selected Home City Code, and whether standard time or
Daylight Saving Time is selected for your Home City Code.

Note

Auto receive is turned on whenever 

LIS

LON

BCN

MAD

PAR

MIL

ROM

,

BER

STO

, or 

ATH

 is selected as the Home City code.

Your City Code

Auto Receive Start Times

1

2

3

4

5

6

LIS, LON

Standard Time

1:00 am 2:00 am 3:00 am 4:00 am 5:00 am Midnight

(GMT +0)

Daylight Saving

2:00 am 3:00 am 4:00 am 5:00 am Midnight 1:00 am

Time

next day

Standard Time

2:00 am 3:00 am 4:00 am 5:00 am Midnight 1:00 am

next day

Daylight Saving

3:00 am 4:00 am 5:00 am Midnight 1:00 am

2:00 am

Time

next day next day

ATH

Standard Time

3:00 am 4:00 am 5:00 am Midnight 1:00 am

2:00 am

(GMT +2)

next day next day

Daylight

 

Saving

4:00 am 5:00 am Midnight 1:00 am 2:00 am

3:00 am

Time

next day next day next day

BCN, MAD
PAR, MIL
ROM, BER
STO
(GMT +1)

Note

Auto receive works only while the watch is in the Timekeeping Mode or World Time
Mode. Auto receive is not performed if an auto receive time is reached while an
alarm is sounding, while a countdown timer operation is in progress, or if a setting
screen (a screen with a flashing setting) is on the display.

Auto receipt 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.

When auto receive is turned on, the watch receives the calibration signal for two to
six minutes everyday when the Timekeeping Mode time reaches each of the
calibration times. Do not perform any button operation within six minutes before or
after any one of the calibration times. Doing so can interfere with correct calibration.

Remember that reception of the calibration signal depends on the time kept 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
Timekeeping Mode time is actually the correct time.

If more than one auto receive is successful, the watch uses the data from the last
successful receive to adjust settings. When only one reception is successful, the
watch uses the data of the successful reception.

About the Receiving Indicator

The receiving indicator shows the strength of the calibration signal being received. For
best reception, be sure to keep the watch in a location where signal strength is
strongest.

Receiving indicator

Weak

Strong

(Level 0)

(Level 3)

Even in an area where signal strength is strong, it takes about 10 seconds for signal
reception to stabilize enough for the receiving indicator to indicate signal strength.

Use the receiving indicator as a guide for checking signal strength and for finding the
best location for the watch during signal reception.

Following reception of the time calibration signal and calibration of the watch’s time
setting, the Level 3 receiving indicator will remain on the display in all modes. The
Level 3 receiving indicator will not be displayed if signal reception was unsuccessful
or after you adjust the current time setting manually.

The Level 3 receiving indicator remains on the display in all modes following
reception of the time calibration signal and calibration of the watch’s time setting.
The Level 3 receiving indicator is not displayed if signal reception was unsuccessful
or after manual adjustment of the current time setting.

The Level 3 receiving indicator indicates that at least one of the five calibration
signal receive operations was successful. Note, however, that the Level 3 receiving
indicator is cleared from the display each day when the first auto receive operation
of the day is performed.

To perform manual receive

1. Place the watch on a stable surface so its top (12

o’clock side) is facing towards a window.

2. In the Timekeeping Mode, hold down 

D

 for about two

seconds until the watch beeps.

3. After you release 

D

 the display will show the current

time and the letters 

RC!

. This indicates that signal

reception is in progress.

Time calibration signal reception normally takes from two to seven minutes. Take
care that you do not perform any button operations or move the watch during this
time.

After signal reception is complete, the display of the watch changes to the last signal
screen.

Note

To interrupt a reception and return to the Timekeeping Mode, press 

D

.

If reception is unsuccessful, the message 

ERR

 appears on the display for one or

two minutes. After that, the watch returns to the Timekeeping Mode.

You can also change from the last signal or 

ERR

 screen to the normal timekeeping

screen by pressing 

D

.

Calibration signal reception is disabled while a countdown timer operation is in
progress.

To turn auto receive on and off

1. In the Timekeeping Mode, press 

D

 to display the last

signal screen.

The watch will automatically return to the Timekeeping
Mode if you do not perform any button operation for one
or two minutes after displaying the last signal screen.

2. Hold down 

A

 until the current auto receive setting

flashes on the display. This is the setting screen.

If the auto receive setting does not appear when you
hold down 

A

, it means that the city code currently

selected for the Home City is for an area that does not
support calibration signal reception. You cannot turn
auto receive on or off in this case.

3. Use 

D

 to turn auto receive on (

ON

) or off (

OFF

).

4. Press 

A

 to exit the setting screen.

To return to the Timekeeping Mode from the last signal screen, press 

D

.

For information about city codes that support signal reception, see “To set your
Home City”.

On/Off status

Signal Receive Troubleshooting

Check the following points whenever you experience problems with calibration signal
reception.

Problem

Cannot perform
manual receive.

Auto receive is
turned on, but
the Level 3
receiving
indicator does
not appear on
the display.

Time setting is
incorrect
following signal
reception.

Probable Cause

The watch is not in the Timekeeping Mode.

Your current Home City is not one of the
following city codes: 

LIS

LON

,

BCN

MAD

PAR

MIL

ROM

,

BER

STO

, or 

ATH

.

You changed the time setting manually.

The watch was not in the Timekeeping
or World Time Mode, or you performed
some button operation during the auto
receive operation.

Even if receive is successful, the Level 3
receiving indicator disappears from

   the display each day when the first auto

receive operation of the day is
performed.

Time data (hour, minutes, seconds) only
was received during the last receive
operation. The Level 3 receiving
indicator appears only when time data
and date data (year, month, day) are
both received.

If the time is one hour off, the DST
setting may be incorrect.

The Home City code setting is not
correct for the area where you are using
the watch.

What you should do

Enter the Timekeeping Mode
and try again.

Select 

LIS

LON

BCN

,

MAD

PAR

MIL

ROM

,

BER

STO

, or 

ATH

 as your

Home City.

Perform manual signal receive
or wait until the next auto
signal receive operation is
performed.

Check to make sure the
watch is in a location where it
can receive the signal.

Change the DST setting to
Auto DST.

Select the correct Home City
code.

For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Timekeeping Precautions”.

Reviews: