Casio 2688 Betriebshandbuch
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MO0306-EA
Operation Guide 2608 2638 2688
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to carefully read this manual and keep it on hand for later reference
when necessary.
This watch does not have a time zone that corresponds to the Greenwich
Mean Time differential of –3.5 hours. Because of this, the radio-controlled
timekeeping and World Time functions will not display the correct time for
Newfoundland, Canada.
Expose the watch to bright light to charge its battery before using it.
You can use this watch even as its battery is being charged by exposure to bright
light.
Be sure to read "Battery" of this manual for important information you need
to know when exposing the watch to bright light.
If the display of the watch is blank...
Sleep indicator
General Guide
Press C to change from mode to mode.
In any mode, press L to illuminate the display.
Timekeeping Mode
Radio-controlled Atomic Timekeeping
PM
Day of week
indicator
Month – Day
Hour : Minutes Seconds
Current Time Setting
This watch automatically adjusts its time setting in accordance with a time calibration
signal. You can also perform a manual procedure to set the time and date, when
necessary.
The first thing you should do after purchasing this watch is to set your Home City,
which is the city where you will normally use the watch. For more information, see
"To set your Home City" below.
When using the watch outside of the range of the transmitter in Fort Collins, you
need to manually adjust the time as required. See "Timekeeping" for information
about manual settings.
To set your Home City
City code
E/C/M/P indicator
Important!
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 can also perform manual receive or you
can set the time manually.
If you are in an area that does not use Daylight Saving Time (summer time), turn off
the DST setting.
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal:
auto receive and manual receive.
If the sleep indicator (S /SLEEP ) is on the display, it
means that the display is blank because the watch's
Power Saving function has shut it to conserve power.
Power Saving automatically turns off the display and
enters a sleep state whenever your watch is left in an
area where it is dark for a certain period.
The initial factory default setting is Power Saving on.
The watch recovers from the sleep state if you move it
to a well-lit area
, if you press any button, or if you
*
angle the watch towards your face for reading.
*
It can take up to two seconds for the display to turn on.
See "Power Saving Function" for more information.
World Time Mode
Press C.
This watch receives a time calibration signal and updates
its time setting accordingly. The time calibration signal
includes both Standard Time and Daylight Saving Time
(summer time) data.
This watch is designed to pick up the time calibration
signal transmitted from Fort Collins, Colorado (USA).
Reception is possible within North America
The term "North America" in this User's Guide refers to the
*
area that consists of Canada, the continental United States,
and Mexico.
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Use D(east) and B(west) to select the city code you
want to use as your Home City.
The following are the city codes for major cities in
North America.
LAX
(P (Pacific) indicator):
Los Angeles, San Francisco, Las Vegas, Seattle,
Vancouver, Tijuana
DEN
(M (Mountain) indicator):
Denver, El Paso, Edmonton, Culiacan
CHI
(C (Central) indicator):
Chicago, Houston, Dallas/Fort Worth, New Orleans,
Winnipeg, Mexico City
NYC
(E (Eastern) indicator):
New York, Detroit, Miami, Boston, Montreal
Note that this watch does not have a city code that
corresponds to Newfoundland.
3. Press A twice to exit the setting screen.
The first press of A displays the 12/24-hour setting
screen. Pressing A again exits the setting screen.
About This Manual
The operational procedures for Modules 2608, 2638 and 2688 are identical. All of
the illustrations in this manual show Module 2608.
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.
(Light)
Module 2608
Time Recorder Mode
Auto Receive
With auto receive, the watch automatically picks up the time calibration signal four
times a day at 2:00 a.m., 3:00 a.m., 4:00 a.m., and 5:00 a.m. 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.
Make sure there are no metal objects nearby.
The watch should not be on its side or facing the wrong way.
Proper signal reception can be difficult or even impossible under the conditions
listed below.
Inside or
among
buildings
Signal reception is normally better at night than during the day.
Time calibration signal reception takes from two to six minutes, but in some cases it
can take as long as 12 minutes. Take care that you do not perform any button
operations or move the watch during this time.
Under good reception conditions, signal reception is possible within a radius of
about 2,000 miles (3,000 kilometers) from the Fort Collins transmitter.
(Light)
Module 2638
Stopwatch Mode
Resin Band
Metal Band
Inside a
Near
Near a
Near high-
vehicle
household
construction
tension
appliances or
site, airport, or
power lines
office
other sources
equipment,
of electrical
or a mobile
noise
phone
2,000 miles
600 miles
Fort Collins
(Light)
Module 2688
Alarm Mode
Among or
behind
mountains
1