Casio 3150 Operation Manual Download Page 3

Operation Guide 3150

3

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.

The watch receives the calibration signal for two to seven minutes everyday
when the time in the Timekeeping Mode reaches a calibration time. Do not
perform any button operation within seven minutes before or after the
calibration times. Doing so can interfere with correct calibration.

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.

About the Signal Strength Indicator

The signal strength 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. The signal strength indicator is displayed
while an auto or manual receive operation is in progress.

lll

llll

ll

l

llllll

lllll

Strong

(Level 3)

Signal strength indicator

Weak

(Level 1)

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

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

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

The Level 3 signal strength indicator is displayed only when the watch is
able to receive both time and date data successfully. It does not appear
when only time data is received.

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

To perform manual receive

1. In the Timekeeping Mode, press 

D

 to display

the last successful receive time and date
screen.

2. Press 

D

 to enter the Receive Mode.

3. Hold down 

D

 for about two seconds until 

starts to flash on the display.

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

If the receive operation is successful, the
reception date and time appear on the
display, along with the 

G

ET

 indicator.

4. After manual receive is complete, press 

D

 to

return to the Timekeeping mode.

The watch also will exit the Receive Mode if
you do not perform any button operation for
about one or two minutes.

lll

llll

ll

l

llllll

lllll

Receiving

Receive successful

If the latest reception fails but a previous
reception was successful, an indicator (

) will

be on the display.
The watch will enter the Receive Mode without
changing the time setting if you press 

D

 or if

you do not perform any button operation for
about one or two minutes.

Note

To interrupt a receive operation and return to
the Receive Mode, press 

D

.

Receive failed

If there was a previously
successful reception

If no reception was
successful

To turn auto receive on and off

1. In the Timekeeping Mode, press 

D

 to display

the last successful receive time and date
screen.

2. 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 one
that does not support time calibration
reception.

3. Press 

D

 to toggle auto receive on (

ON

) and

off (

OFF

).

4. Press 

A

 to exit the setting screen.

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

ll

ll

llll

l

ll

ll

ll

ll

ll

ll

l l

On/Off status

To check the latest signal reception results

Press 

D

 to view the last successful receive time

and date. Press 

D

 again to return to the

previous screen.

The watch is not in the
Timekeeping Mode.

Your current Home City is not
one of the following: 

LIS

,

LON

,

MAD

,

 PAR

,

 ROM

,

 BER

,

 STO

,

ATH

,

 MOW

,

 HKG

,

 BJS

,

 TPE

,

SEL

,

 TYO

,

 HNL

,

 ANC

,

 YVR

,

LAX

YEA

,

 DEN

MEX

CHI

,

MIA

YTO

NYC

YHZ

, or 

YYT

You changed the time setting
manually.

The DST setting was changed
manually in the World Time
Mode.

You pressed a button while
signal receive was in progress.

Even if receive is successful,
the Level 3 signal strength
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 signal
strength indicator appears only
when time data and date data
(year, month, day) are both
received.

Cannot perform
manual receive.

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

Enter the Timekeeping
Mode and try again.

Select 

LIS

,

LON

,

 MAD

,

PAR

,

 ROM

,

 BER

,

 STO

,

ATH

,

 MOW

,

 HKG

,

 BJS

,

TPE

,

 SEL

,

 TYO

,

 HNL

,

ANC

,

 YVR

,

 LAX

YEA

,

DEN

MEX

CHI

MIA

,

YTO

NYC

YHZ

, or 

YYT

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.

What you should do

Problem

Probable Cause

Signal Reception Troubleshooting

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

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.

Change the DST setting
to Auto DST.

Select the correct Home
City code.

Time setting is
incorrect
following signal
reception.

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

Summary of Contents for 3150

Page 1: ...g Function for more information 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 t...

Page 2: ...gnal transmitters and so certain conditions may cause problems with signal reception Calibration signal reception is disabled while a countdown timer target time operation is in progress Home City Code LON PAR BER ATH LIS MAD ROM STO MOW HKG BJS TPE TYO SEL HNL ANC LAX DEN CHI NYC YVR YEA MEX MIA YTO YHZ YYT Frequency 60 0 kHz 77 5 kHz 68 5 kHz 40 0 kHz 60 0 kHz 60 0 kHz Transmitter Anthorn Englan...

Page 3: ... reception date and time appear on the display along with the GET indicator 4 After manual receive is complete press D to return to the Timekeeping mode The watch also will exit the Receive Mode if you do not perform any button operation for about one or two minutes l l l l l l l l ll l l l l l l l ll l l Receiving Receive successful If the latest reception fails but a previous reception was succe...

Page 4: ... 20 10 9 8 7 6 5 4 3 2 1 and 0 seconds You can cancel the auto start countdown at any point and start time measurement special stage manually by pressing the D button You can cancel the countdown and return to the countdown start screen by pressing the B button while a countdown is in progress Auto start countdown seconds indicator Remaining auto start countdown time 36 seconds indicated here Spec...

Page 5: ...procedure to clear all of the measurement data records currently stored in watch memory 1 Use the D and B button to display the total measurement time screen 2 Hold down A until the display contents start to flash This is the setting screen 3 Press the D and B buttons at the same time to delete the records 4 Press the A button to exit the setting screen l l l l l l l l l l l l l l l l l l l l ll l...

Page 6: ...ator ON To turn the Hourly Time Signal on and off 1 In the Alarm Mode use D to select the Hourly Time Signal SIG 2 Press B to toggle it on and off The Hourly Time Signal on indicator is shown on the display in all modes while this function is turned on Hourly time signal on indicator Stopwatch The stopwatch lets you measure elapsed time split times and two finishes The display range of the stopwat...

Page 7: ...cell so regular battery replacement is not required However after very long use the rechargeable battery may lose its ability to achieve a full charge If you experience problems getting the special rechargeable battery to charge fully contact your dealer or CASIO distributor about having it replaced Never try to remove or replace the watch s special battery yourself Use of the wrong type of batter...

Page 8: ...o move the flashing in the sequence shown below to select the other setting Seconds 12 24 Hour Format Hour Minutes DST Month Year City Code Day Power Saving The following steps explain how to configure timekeeping settings only 4 When the timekeeping setting you want to change is flashing use D or B to change it as described below Change the city code Cycle between Auto DST AvtA Daylight Saving Ti...

Page 9: ...setting to be off by up to one second The current time setting in accordance with the time calibration signal takes priority over any time settings you make manually The watch is designed to update the date and day of the week automatically for the period January 1 2000 to December 31 2099 Setting of the date by the time calibration signal cannot be performed starting from January 1 2100 This watc...

Page 10: ...urn the face of the watch towards you This does not necessarily indicate malfunction of the auto light switch You may notice a very faint clicking sound coming from the watch when it is shaken back and forth This sound is caused by mechanical operation of the auto light switch and does not indicate a problem with the watch Pago Pago Honolulu Anchorage Vancouver Los Angeles Edmonton Denver Mexico C...

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