Casio 3147 Operation Manual Download Page 2

Operation Guide 3147

2

3. 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 or you can set the time manually.

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 “Important!” under “Time Calibration Signal Reception”
and “Transmitters”.

See the maps under “Approximate Reception Ranges” 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” for more information.

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 six times a day. When any auto receive is successful, the remaining
auto receive operations are not performed. For more information, see “About
Auto Receive”.

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”.

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 facing 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.

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

Signal reception normally is 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 a
construction
site, airport,
or other
sources of
electrical
noise

Near high-
tension
power lines

Among or
behind
mountains

Near
household
appliances,
office
equipment,
or a mobile
phone

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

BER

ATH

HKG

TPE

TYO

HNL

*,

 ANC

*,

 LAX

,

DEN

,

 CHI

,

 NYC

Frequency

60.0 kHz

77.5 kHz

68.5 kHz

40.0 kHz

60.0 kHz

60.0 kHz

Transmitter

Anthorn (England)

Mainflingen (Germany)

Shangqiu City (China)

Fukushima (Japan)

Fukuoka/Saga (Japan)

Fort Collins, Colorado
(the United States)

* 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.

Approximate Reception Ranges

Anthorn

Mainflingen

1,500 kilometers

500 kilometers

Fort
Collins

2,000 miles
(3,000 kilometers)

600 miles
(1,000 kilometers)

The Anthorn
signal is
receivable within
this area.

1,000
kilometers

1,000
kilometers

Fukuoka/Saga

500
kilometers

Fukushima

500
kilometers

500 kilometers

Changchun

Beijing

1,500 kilometers

Shangqiu

Shanghai

Hong Kong

Chengdu

Signals are receivable in the Taiwan area when reception conditions are good.

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: 1500 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” if you
experience problems with time calibration signal reception.

About Auto Receive

The watch receives the time calibration signal automatically up to six times a
day. 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

Auto Receive Start Times

1

2

3

4

5

6

LON

Standard Time

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

Daylight Saving Time

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

PAR

Standard Time

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

BER

Daylight Saving Time

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

ATH

Standard Time

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

Daylight Saving Time

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

HKG

Standard Time

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

TYO

Standard Time

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

TPE

NYC

Standard Time  and

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

CHI

Daylight

 

Saving Time

DEN

LAX

*

Next day

Summary of Contents for 3147

Page 1: ...is watch should be considered as reasonable representations only CASIO COMPUTER CO LTD assumes no responsibility for any loss or any claims by third parties that may arise through the use of this watch About This Manual 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 mod...

Page 2: ...de LON PAR BER ATH HKG TPE TYO HNL ANC LAX DEN CHI NYC Frequency 60 0 kHz 77 5 kHz 68 5 kHz 40 0 kHz 60 0 kHz 60 0 kHz Transmitter Anthorn England Mainflingen Germany Shangqiu City China Fukushima Japan Fukuoka Saga Japan Fort Collins Colorado the United States The areas covered by the HNL and ANC city codes are quite far from the time calibration signal transmitters and so certain conditions may ...

Page 3: ...ailed 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 E 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 ...

Page 4: ... indicator A A In the Altimeter Mode press the A button to toggle between the altitude graph and the altitude change indicator The altitude change indicator shows the relative change between the latest altitude reading and the one before it Nothing is displayed for the altitude change indicator when the current altitude reading is outside the watch s altitude measurement range 700 to 10 000 meters...

Page 5: ...sure Because of this we recommend that you update the reference altitude whenever one is available during your climb To specify a reference altitude 1 In the Altimeter Mode hold down A for about two seconds until either OFF or the current reference altitude value starts to flash This is the setting screen 2 Press E or B to change the current reference altitude value by 5 meters or 20 feet You can ...

Page 6: ...g inHg as the display unit for the measured barometric pressure and Celsius C or Fahrenheit F as the display unit for the measured temperature value See To select the temperature barometric pressure and altitude units See Barometer and Thermometer Precautions for important precautions Barometric Pressure Graph Barometric pressure indicates changes in the atmosphere By monitoring these changes you ...

Page 7: ...he countdown start time is on the display in the Countdown Timer Mode hold down A until the hour setting of the countdown start time starts to flash which indicates the setting screen If the countdown start time is not displayed use the procedure under To use the countdown timer to display it Minutes Current time Hours Seconds 2 Press D to move the flashing between the hour and minute settings 3 U...

Page 8: ...ease as altitude increases This watch bases its altitude measurements on International Standard Atmosphere ISA values stipulated by the International Civil Aviation Organization ICAO These values define relationships between altitude air pressure and temperature 0 m 500 m 1000 m 1500 m 2000 m 2500 m 3000 m 3500 m 4000 m 899 hPa 795 hPa 701 hPa 616 hPa 8 5 C 2 C 4 5 C 11 C 15 C 1013 hPa About 6 5 C...

Page 9: ... areas described below whenever charging its rechargeable battery Also note that allowing the watch to become very hot can cause its liquid crystal display to black out The appearance of the LCD should become normal again when the watch returns to a lower temperature Warning Leaving the watch in bright light to charge its rechargeable battery can cause it to become quite hot Take care when handlin...

Page 10: ...Daylight Saving Time is turned on ll l l l l l l l l l l l l llllll DST indicator Reference This section contains more detailed and technical information about watch operation It also contains important precautions and notes about the various features and functions of this watch Auto Return Features The watch returns to the Timekeeping Mode automatically if you do not perform any button operation ...

Page 11: ...n for PAR BER and ATH Timekeeping Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1 In the range of 00 to 29 the seconds are reset to 00 without changing the minutes With the 12 hour format the P PM indicator appears on the display for times in the range of noon to 11 59 p m and no indicator appears for times in the range of mid...

Page 12: ...e Timekeeping Mode 2 Hold down A until the city code starts to flash which indicates the setting screen 3 Use D to select the setting screen for the unit you want to change See step 3 under To set the time and date manually for information about how to scroll through setting screens l l l l l l l l l l ll 4 Press E to change the unit setting Each press of E changes the selected unit setting as sho...

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