Casio 2406 Operation Manual

MO0308-EC
Operation Guide 2406 2583 2587
About This Manual
• The operational procedures for Modules 2406, 2583 and 2587 are identical. All of
the illustrations in this manual show Module 2406.
(Light)
L
D
Module 2406
• 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.
• 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 will not display the correct time for Newfoundland, Canada.
General Guide
• Press D to change from mode to mode.
• In any mode, press L to illuminate the display.
Timekeeping Mode
L A
B
D C
Timekeeping
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.
Important!
Before using the watch for the first time after purchasing it, use the procedure under
"To specify your time zone" to specify your time zone, and then perform the procedure
under "To trigger a calibration signal receive operation manually".
Setting the Time and Date
There are three different methods you can use to set the watch's time and date.
• Auto receive of the time calibration signal
• Manual receive of the time calibration signal
• Manual setting without using the time calibration signal
No matter which method you use, you must specify your time zone first.
Specifying Your Time Zone
Use the Time Zone Mode to specify your current time zone. If you move to a different
time zone either inside or outside of North America, simply change the time zone
setting and the watch adjusts its current time and date settings accordingly.
• See the "Time Zone Table" for information about time zones and applicable cities.
To specify your time zone
Time zone indicator
(E/C/M/P)
Time zone differential
(Indicates –5h)
A
B
D C
Time Zone Indicator Time Zone Differential
E (Eastern)
C (Central)
M (Mountain)
P (Pacific)
3. Use A (+) and C (–) to change the time zone differential value.
4. Press B to exit the setting screen.
• In a U.S. area that does not use DST, select the time zone to the west of the time
zone where you are. If you are in a Mountain Time Zone area that does not use
DST, for example, select the Pacific Time Zone during the Daylight Saving Time
period.
(Light)
A L A
B
B
C
D C
Modules 2583, 2587
Alarm Mode
Press D.
*
1. Use D to enter the Time Zone Mode.
2. Hold down B until the current time zone differential
value starts to flash, which indicates the setting screen.
• The time zone differential value indicates the number
of hours difference in time between the currently
selected time zone and UTC in Greenwich, England.
On-screen indicators also indicate North American
time zones as shown in the table below.
• Note that this watch does not have a time zone that
corresponds to Newfoundland.
Major cities in same time zone
NEW YORK, MONTREAL, DETROIT,
–5h
MIAMI, BOSTON
CHICAGO, HOUSTON, DALLAS/
–6h
FORT WORTH, NEW ORLEANS,
MEXICO CITY, WINNIPEG
DENVER, EL PASO,
–7h
EDMONTON,CULIACAN
LOS ANGELES, SAN FRANCISCO,
–8h LAS VEGAS, VANCOUVER,
SEATTLE, TIJUANA
• If you leave the watch in Alarm, Date Alert, or Time Zone Mode for about 10 seconds
without performing any operation, it automatically returns to the Timekeeping Mode.
Date Alert Mode
Time Calibration Signal Reception
Removing the watch from your wrist and positioning it as shown in the illustrations
nearby helps to optimize signal reception.
• 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.
Note
See "Time Calibration Signal Reception Precautions" for important information about
time calibration signal reception.
To trigger a calibration signal receive operation manually
Receive indicator
Module 2406
Receive indicator
Modules 2583, 2587
To use calibration signal auto receive
The watch automatically starts to receive the time calibration signal when the
Timekeeping Mode time reaches 1:00 AM each day (calibration time). Note that the
auto receive operation is performed everyday no matter what mode the watch is in,
and reception continues even if you perform some other operation after it starts. The
receive indicator is not displayed during auto receive.
• Auto receive is performed at 1:00 AM, 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 easily receive the signal.
• Remember that reception of the calibration signal depends on the Timekeeping
Mode time. The receive operation will be performed whenever the Timekeeping
Mode time is 1:00 AM, regardless of whether or not the displayed time is actually the
correct time.
Important!
The watch has a digital tuning function called "automatic gain control," which achieves
best timekeeping accuracy when there are a large number of successful calibration
signal receptions. Because of this, we recommend that you always allow the watch to
perform automatic calibration.
Stopwatch Mode
Resin Band Metal Band
1. Place the watch on a stable surface so its top (12
o'clock side) is facing towards a window.
2. In the Timekeeping Mode, hold down C for about two
seconds, until the receive indicator starts to flash, which
indicates that signal reception has started.
• Signal reception takes from two to five minutes. Take
care that you do not move the watch during this time.
C
• The receive indicator stops flashing and remains on the
display when signal reception is complete. The receive
indicator remains on the display for three days after a
successful signal reception. The receive indicator does
not appear if signal reception is unsuccessful for some
reason.
• To interrupt a receive operation, hold down C.
C
Time Zone Mode
1