Casio 3145 User manual

Module No. 3145

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.
•Be sure to keep all user documentation handy for future reference.
Applications
The built-in sensors of this watch measure barometric pressure, temperature
and altitude. Measured values are then shown on the display. Such features
make this watch useful when hiking, mountain climbing, or when engaging in
other such outdoor activities.
E

E-1
Keep the watch exposed to bright light
The electricity generated by the solar cell of the
watch is stored by a built-in battery. Leaving or
using the 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.
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Bright light
Solar cell

E-2
•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
cause 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.
Bright light
Electrical
energy
All
functions
enabled
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Charge
Solar cell
(Converts light to
electrical power.)
Rechargeable battery
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Some
functions
disabled
Dis-
charge
Battery charges in the light. Battery discharges in the dark.

E-3
•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 five minutes exposure to bright sunlight coming in through
a window
Approximately 50 minutes exposure to indoor fluorescent lighting
•Be sure to read “Power Supply” (page E-86) 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” (page E-105) for more information.

E-4
Warning!
•The measurement functions built into this watch are not intended for
taking measurements that require professional or industrial precision.
Values produced by this 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.

E-5
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 mode. Further details and technical information
can be found in the “Reference”section.
•To ensure that this watch provides you with the years of service for which it
is designed, be sure to carefully read and follow the instructions under
“Operating Precautions”and “User Maintenance”.
(Light)(Light)

E-6
Contents
General Guide ................................................................................. E-10
Radio-controlled Atomic Timekeeping ........................................... E-12
Altimeter .......................................................................................... E-34
Recalling Altitude Data .................................................................... E-52
Barometer/Thermometer .................................................................E-59
World Time ........................................................................................E-67
Stopwatch ........................................................................................ E-69
Countdown Timer ............................................................................. E-71
Alarms .............................................................................................. E-73
Illumination ...................................................................................... E-77
Questions & Answers ......................................................................E-81
Power Supply ................................................................................... E-86
Timekeeping .....................................................................................E-94
Reference ........................................................................................E-101
Specifications .................................................................................E-118
Operating Precautions ..................................................................E-124
User Maintenance .......................................................................... E-134

E-7
Procedure Lookup
The following is a handy reference list of all the operational procedures
contained in this manual.
To specify your Home City ............................................................. E-13
To perform manual receive .............................................................E-27
To turn auto receive on and off ....................................................... E-29
To check the latest signal reception results ................................. E-30
To view your current altitude ......................................................... E-38
To specify the altitude reading interval ......................................... E-42
To take a manual altitude reading ..................................................E-44
To take altitude readings using the Altimeter Mode
stopwatch ...................................................................................E-44
To specify a reference altitude ....................................................... E-50
To view altitude records and the current Altimeter Mode
stopwatch session record ....................................................... E-56

E-8
To clear the historical record ......................................................... E-58
To take barometric pressure and temperature readings ............. E-59
To view the time in another city ...................................................... E-67
To toggle a city code time between Standard Time
and Daylight Saving Time .........................................................E-68
To measure times with the stopwatch ........................................... E-70
To set the countdown start time .....................................................E-71
To use the countdown timer ........................................................... E-72
To set an alarm time ........................................................................ E-74
To test the alarm ............................................................................... E-75
To turn an alarm and the Hourly Time Signal on and off ............. E-76
To turn on illumination manually .................................................... E-78
To turn the auto light switch on and off .........................................E-80
To set the time and date manually .................................................. E-96
To change the Daylight Saving Time (summer time) setting .... E-100

E-9
To turn the button operation tone on and off ..............................E-104
To recover from the sleep state ....................................................E-106
To turn Power Saving on and off .................................................. E-107
To calibrate the pressure sensor and the temperature sensor .... E-117

E-10
General Guide
•The illustration below shows which buttons you need to press to navigate
between modes.
•In any mode, press Lto illuminate the display.
World Time Mode
Countdown
Timer Mode
Press D.
Stopwatch Mode
Barometer/
Thermometer Mode
Alarm Mode
▲ ▲
▲
▲
▲

E-11
•You can press the Cbutton to go directly from the Timekeeping Mode to
the Altimeter Mode. To go to the Altimeter Mode from the Barometer/
Thermometer, World Time, Stopwatch, Countdown Timer, Alarm, or Data
Recall Mode, first enter the Timekeeping Mode and then press the C
button. Timekeeping Mode
Altimeter Mode
Data Recall Mode
Press D.
▲
Press C.
▲
▲

E-12
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”below.
•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-94) for more information about manual
time settings.

E-13
•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.
To specify your Home City
1. In the Timekeeping Mode, hold down Auntil
the city code starts to flash. This indicates the
setting screen.
2. Press E(east) and B(west) to select the
city code you want to use as your Home City.
LON : London
PAR, BER : Paris, Berlin, Milan, Rome,
Amsterdam, Hamburg, Frankfurt,
Vienna, Barcelona, Madrid
ATH : Athens
HKG : Hong Kong
TPE, TYO : Taipei, Tokyo
LAX :Los Angeles, San Francisco, Las Vegas, Seattle/Tacoma,
Vancouver, Tijuana
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City code
Hour : Minutes
PM
indicator
Seconds

E-14
DEN :Denver, El Paso, Edmonton, Culiacan
CHI :Chicago, Houston, Dallas/Fort Worth, New Orleans, Winnipeg,
Mexico City
NYC :New York, Detroit, Miami, Boston, Montreal
3. Press Ato 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-27) or you can set the time manually
(page E-96).
•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-110).
•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-29 for more information.

E-15
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”(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-27).

E-16
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.

E-17
•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

E-18
•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.