Casio 2858 User Manual
MO0312-EA
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Operation Guide 2858 2859 2860 2861
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.
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
Module 2858/2859
Module 2860/2861
General Guide
• Press C to change from mode to mode.
• In any mode, press L to illuminate the display.
Timekeeping Mode
If the sleep indicator (SLEEP ) is displayed, it means the
watch’s Power Saving function has turned off the display
to conserve power. Power Saving automatically turns off
the display and enters a sleep state whenever the watch
is left for a certain period where it is dark.
• 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
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.
Press C.
, if you press any button, or if you angle
*
World Time Mode
▲
About This Manual
• The operational procedures for Modules 2858, 2859, 2860, and 2861 are identical.
All of the illustrations in this manual show Module 2858/2859.
• 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.
Module 2858/2859
(Light) (Light)
Time Recorder Mode
Module 2860/2861
▲
Stopwatch Mode
▲
Alarm Mode
▲
Radio-controlled 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.
• In the Timekeeping Mode, press D to display the Last Signal screen. The Last
Signal screen shows the date and time of the last successful time cailbration signal
reception.
PM
indicator
• This watch is designed to pick up the time calibration signal transmitted from Rugby,
England and the signal from Mainflingen, Germany.
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 that is outside of the range of the transmitters in Rugby and
Mainflingen, you need to manually adjust the time as required. See “Timekeeping”
for information about manual settings.
To set your Home City
Day of week
Month – Day Hour : Minutes Seconds
Current Time Screen
1. In the Timekeeping Mode, hold down A until the city
City code
l
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l
l
l
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Transmitter mode
indicator
code setting starts to flash, which indicates the setting
screen.
2. Use D(east) and B(west) to select the city code you
l
want to use as your Home City.
• The following are the city codes for major cities in the
Western Europe time zones.
LON: London
PAR and BER: Paris, Berlin, Milan, Rome,
3. Press C to display the transmitter mode setting screen.
• If the displayed transmitter mode indicator shows
something other than
before advancing to the next step.
4. 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.
Receive time
Press D.
▲
▲
Receive date
Last Signal Screen
Amsterdam, Hamburg, Frankfurt, Vienna,
Barcelona, Madrid
qvtA, use D to display qvtA
▲
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.
• See “Transmitters” for details about the transmitter mode indicator.
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal:
auto receive
and
• Auto Receive
With auto receive, the watch automatically picks up the time calibration signal five
times a day at 0:00 a.m., 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 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!
• 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.
Resin Band
• 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.
manual receive
Inside or
among
buildings
Inside a
vehicle
.
Metal Band
Near
household
appliances or
office
equipment,
or a mobile
phone
Near a
construction
site, airport, or
other sources
of electrical
noise
Near hightension
power lines
Among or
behind
mountains
1
Operation Guide 2858 2859 2860 2861
• Signal reception is normally better at night than during the day.
• Time calibration signal reception takes from two to five 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.
1,500 kilometers
Rugby
500 kilometers
• This watch is designed to receive the time calibration signal transmitted from Rugby,
England and the signal from Mainflingen, Germany. Signal reception is possible
within the area represented by a circle with a radius of about 1,500 kilometers.
• At distances further than about 500 kilometers from a transmitter, signal reception
may not be possible during certain times of year or times of day. Radio interference
may also cause problems with reception.
• See the information under “Signal Receive Troubleshooting” if you experience
problems with time calibration signal reception.
About Auto Receive
When auto receive is turned on, the watch automatically starts to receive the time
calibration signal when the time in the Timekeeping Mode reaches 0:00 a.m., 1:00
a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. each day (calibration times). The watch will
also perform an additional auto receive operation at 5:00 a.m. if none of the regularly
scheduled auto receive operations are successful.
Note
• Auto receive is on whenever the transmitter mode setting is anything other than
OFF. See “Transmitters” for more information.
• The auto receive operation is performed only if the watch is in the Timekeeping
Mode or World Time Mode when one of the calibration times is reached. It is not
performed if a calibration time is reached while an alarm is sounding, or while you
are configuring settings (while settings are flashing on the display).
• Auto receipt of the calibration signal is designed to be performed early in the
morning, 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.
• When auto receive is turned on, the watch receives the calibration signal for two to
five minutes everyday when the time in the Timekeeping Mode reaches each of the
calibration times. Do not perform any button operation within five minutes before or
after any one of the calibration times. Doing so can interfere with correct calibration.
• Remember that reception of the calibration signal depends on the time kept in the
digital display. The receive operation will be performed whenever the display shows
any one of the calibration times, regardless of whether or not the displayed time is
actually the correct time.
• When two, three, four, or five receptions are successful, the watch uses the data of
the last reception for calibration. When only one reception is successful, the watch
uses the data of the successful reception.
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being received. For best
reception, be sure to keep the watch in a location where signal strength is strongest.
Mainflingen
Module 2858/2859
Module 2860/2861
Receiving indicator
• Even in an area where signal strength is strong, it takes about 10 seconds for signal
reception to stabilize enough for the receiving indicator to indicate signal strength.
• Use the receiving indicator as a guide for checking signal strength and for finding the
best location for the watch during signal receive operations.
• The Level 4 receiving indicator remains on the display in all modes following
reception of the time calibration signal and calibration of the watch’s time setting.
The Level 4 receiving indicator is not displayed if signal reception was unsuccessful
or after manual adjustment of the current time setting.
• The Level 4 receiving indicator is displayed only when the watch is able to
successfully receive both time and date data. It does not appear when only time data
is received.
• The Level 4 receiving indicator indicates that at least one of the calibration signal
receive operations was successful. Note, however, that the Level 4 receiving
indicator is cleared from the display at 3:00 a.m. each day.
To perform manual receive
Receiving indicator
• After signal reception is complete, the display of the watch changes to the Last
Signal screen.
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press D.
• If the receive operation is unsuccessful, the message
for about one or two minutes. After that, the watch returns to the Timekeeping Mode.
• You can also change from the Last Signal or
timekeeping screen by pressing D.
(Level 1) Weak
1. Place the watch on a stable surface so its top (12
o’clock side) is facing towards a window.
• Note that signal reception is poor when the 12 o’clock
side of the watch is not facing towards a window.
2. In the Timekeeping Mode (Current Time screen), hold
down D for about two seconds until the watch beeps.
3. Release D and the message
that signal reception has started.
• Time calibration signal reception takes from two to five
minutes. Take care that you do not perform any button
operations or move the watch during this time.
ERR screen to the normal
Strong (Level 4)
appears to indicate
RC!
ERR appears on the display
Signal Receive Troubleshooting
Check the following points whenever you experience problems with calibration signal
reception.
Problem
Cannot perform
manual receive.
Auto receive is
turned on, but
the Level 4
receiving
indicator does
not appear on
the display.
Time setting is
incorrect
following signal
reception.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Timekeeping Precautions”.
Probable Cause
•
The watch is not in the Timekeeping Mode.
• Your current Home City is not one of the
following city codes:
LON, PAR, or BER.
• The transmitter mode is incorrect.
• The transmitter mode is incorrect.
• You changed the time setting manually.
• The watch was not in the Timekeeping
or World Time Mode, or you performed
some button operation during the auto
receive operation.
•
Even if receive is successful, the Level 4
receiving indicator disappears every day
at 3 am.
• Time data (hour, minutes, seconds) only
was received during the last receive
operation. The Level 4 receiving
indicator appears only when time data
and date data (year, month, day) are
both received.
• If the time is one hour off, the DST
setting may be incorrect.
• The Home City code setting is not
correct for the area where you are using
the watch.
What you should do
• Enter the Timekeeping Mode
and try again.
• Select LON, PAR, or BER
as your Home City.
• Select the transmitter mode
appropriate for your current
location.
• Select the transmitter mode
appropriate for your current
location.
• Perform manual signal receive
or wait until the next auto
signal receive operation is
performed.
• Check to make sure the watch
is in a location where it can
receive the signal.
• Change the DST setting to
Auto DST.
• Select the correct Home City
code.
World Time
City code
Home city time
Current time in the
selected city code
To view the time in another city code
While in the World Time Mode, press D to scroll through the city codes (time zones)
to the east or B to scroll to the west.
• If the current time shown for a city is wrong, check your Timekeeping Mode time and
Home City settings and make the necessary changes.
To toggle a city code time between Standard Time and Daylight Saving Time
DST indicator
• Daylight Saving Time (DST) advances the time setting by one hour from Standard
Time. Remember that the not all countries or even local areas use Daylight Saving
Time.
• The watch will perform a signal receive operation even if it is in the World Time Mode
when a calibration time is reached. If this happens, the World Time Mode time
settings will be adjusted in accordance with the Home City time.
The World Time shows the current time in 30 cities (29
time zones) around the world.
• For full information on city codes, see the “City Code
Ta bl e ”.
• The current time for all city codes in the World Time
Mode is calculated in accordance with the Greenwich
Mean Time (GMT) differential for each city, based on the
your Home City time setting.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
1. In the World Time Mode, use B and D to display the
city code (time zone) whose Standard Time/Daylight
Saving Time setting you want to change.
2. Hold down A to toggle Daylight Saving Time (DST
indicator displayed) and Standard Time (DST indicator
not displayed).
• The DST indicator is on the display whenever you
display a city code for which Daylight Saving Time is
turned on.
• Note that the DST/Standard Time setting affects only the
currently displayed city code. Other city codes are not
affected.
Time Recorder
The Time Recorder lets you store up to 30 records of the current time (month, day,
hour, minutes, seconds, and DST on/off setting) with the touch of a button. One way
you can use the Time Recorder is to record the start time and the end time of a
particular event.
To record a Time Recorder time
1. Enter the Timekeeping Mode.
2. Hold down B for about one second to record the Home City time (month, day,
hour, minutes, seconds, and DST on/off setting).
• The recorded time flashes for about two seconds, and then it is assigned a record
number. After that, the Timekeeping Mode screen appears.
• Records are assigned numbers sequentially from
• Storing a new time record when there are already 30 records stored in memory
automatically deletes record
stores the new record as
To recall Time Recorder times
Time record number
Recorded date
(Month – Day)
Recorded time
(Hour : Minutes Seconds)
#01, shifts the remaining records upwards by 1, and
#30.
1. Enter the Time Recorder Mode.
• If you recorded a new Time Recorder time since you
last entered the Time Recorder Mode, the newest
record appears first. If you have not recorded a new
time, the record you were viewing when you last
exited the Time Recorder Mode appears first.
2. Use B (+) and D (–) to scroll through times stored in
memory.
#01 through #30.
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