Casio GW-7900B-1ER manual

Casio GW-7900B-1ER
(6)
  • Number of pages: 8
  • Filetype: PDF

Operation Guide 3193 3200

1
MO0908-EA

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.
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.
The Moon phase indicator and tide graph data that appear on the display of this
watch are not intended for navigation purposes. Always use proper instruments
and resources to obtain data for navigation purposes.
This watch is not an instrument for calculating low tide and high tide times. The
tide graph of this watch is intended to provide a reasonable approximation of
tidal movements 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.
Keep the watch exposed to bright light
The electricity generated by the solar cell of the watch is
stored by a rechargeable 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

All

functions

enabled

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

Charge

Rechargeable battery

Bright Light

Electrical

energy

Solar cell

(Converts light to

electrical power.)

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

Some or all

functions

disabled

Dis-

charge

Battery charges in the light. Battery discharges in the dark.

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.
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” 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” 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.
About This Manual
Depending on the model of your watch, display text appears either as dark figures
on a light background (Module 3193), or light figures on a dark background (Module
3200). All of the illustrations in this manual show Module 3193.
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.
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Module 3193 Module 3200

Countdown Timer Mode Stopwatch Mode
Alarm Mode
World Time Mode
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General Guide

Press C to change from mode to mode.
In any mode (except when a setting screen is on the display), press L to illuminate
the display.
Timekeeping Mode
Press C.
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Tide/Moon Data Mode

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”
for more information about manual time settings.
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 A until the city
code starts to flash, which indicates the setting screen.
2. Press D (east) and B (west) to select the city code
you want to use as your Home City.
LIS, LON : Lisbon, London
MAD, PAR, ROM, BER, STO : Madrid, Paris,
Rome, Berlin, Stockholm
ATH : Athens
MOW : Moscow
HKG, BJS, TPE : Hong Kong, Beijing, Taipei
SEL, TYO : Seoul, Tokyo
HNL : Honolulu
ANC : Anchorage
YVR, LAX: Vancouver, Los Angeles
YEA, DEN : Edmonton, Denver
MEX, CHI : Mexico City, Chicago
NYC : New York
YHZ : Halifax
YYT : St.Johns
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City code
PM indicator
Seconds
Hour : Minutes
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.
Under factory default settings, auto receive is turned off for all of the following city
codes: MOW (Moscow), HNL (Honolulu), and ANC (Anchorage). For details about
turning on auto receive for these city codes, see “To turn auto receive on and off”.
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”.
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”.
Casio GW-7900B-1ER

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Casio GW-7900B-1ER specifications

General
Brand Casio
Model GW-7900B-1ER
Product Watch
Language English
Filetype PDF
Technical details
Stopwatch
World time function
Timer 1/1min - 24h
Alarm function
Calendar
Shockproof
Snooze function
Clock mode 12h/24h
Radio signal receiver DCF/MSF/WWVB/JJY/BPC
Water resistant depth 200 m
Power
Solar power
Battery type CTL1616
Battery level indicator
Design
Watch glass type Mineral
Watch case material Resin
Band material Resin
Other features
Dimensions (WxDxH) 50 x 17.7 x 52.4 mm
Weight & dimensions
Weight 71 g
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