Casio 2510 Owner's Manual
USER’S GUIDE 2510
General Guide
•Press C to change from mode to mode.
•In any mode, press L to illuminate the display.
World Time Mode
Timekeeping Mode
Press C.
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Timekeeping
Use the Timekeeping Mode to set and view the current time and date.
•Pressing A displays the Last Signal screen (date and time the time calibration signal was last received) in the Timekeeping Mode.
Month – Day Day of week
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Receive time |
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Last Signal Screen |
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Hour : Minutes |
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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.
•Before using the watch in the Continental United States, first use the procedure under “Setting Up the Watch for Use in the Continental United States” on the next page to set the time in accordance with a time calibration signal.
•Note that after you set your Home City (the city where you normally use the watch) code, you must also turn on the watch’s time calibration signal receiver if you want to enable auto time calibration. See “About Auto Receive” for more information.
•See “Setting the Time and Date Manually” for information about manual settings.
•Before using the watch in Japan, first specify your Home City, select the DST setting you want to use, and then perform the procedure under “To perform manual time calibration signal reception” .
Setting Up the Watch for Use in the Continental United States
You need to make the following three settings before using this watch in the Continental United States. The following provides a general overview of the setting procedure. For full details, see “Setting the Time and Date Manually” and “Time Calibration Signal Reception”.
• Specify the city code for your Home City (the city where you will normally use the watch). Receive indicator
•Select the auto summer time (DST) setting.
•Perform the manual time calibration signal receive operation to set the current time.
To set up the watch for use in the Continental United States
GMT differential City code
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Receive indicator (E-14)
1.In the Timekeeping Mode, press B. This causes the current auto receive on/off setting (the receive indicator) to flash, which indicates the setting screen.
2.Press C twice to move the flashing to the city code setting.
3.Use D(+) and A(–) to select the city code you want to use as your Home City.
•The following are the city codes for major cities in the Continental United States time zones.
LAX: Los Angeles, San Francisco, Las Vegas, Seattle
DEN: Denver, El Paso
CHI: Chicago, Houston, Dallas/Fort Worth, New Orleans
NYC: New York, Detroit, Miami, Boston
4.Press C to display the summer time (DST) setting screen.
5.Use D to select AUTO DST.
•AUTO DST specifies auto switching between Daylight Saving Time and Standard Time.
6.Press B to exit the setting screen.
7.Hold down A for about two seconds until the watch beeps.
•Release A and the message receiving appears to indicate that signal reception has started.
•Time calibration signal reception takes from two to six minutes. Take care that you do not move the watch during this time.
•If the watch is indoors, we recommend that you place the watch near a window to allow better signal reception.
•After signal reception is complete, the display of the watch changes to the Last Signal screen.
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Time Calibration Signal Reception
This watch is designed to pick up a time calibration signal and update its time setting in accordance with the signal. There are two different methods you can use to receive the signal: Auto Receive and Manual Receive. With Auto Receive, the watch automatically receives the calibration signal three times each day and makes appropriate adjustments. With Manual Receive, you perform a specific button operation to receive the calibration signal.
Before performing a signal receive operation, remove the watch from you wrist and position it as shown in the illustrations below.
•If your watch has a resin band, pass the end of the band through the band loop and place the watch on a stable surface.
Resin band |
Metal band |
Pass through band loop.
Note
•If you are using the time calibration signal to set the time for this watch, be sure to correctly set your Home City. Otherwise, there is the chance that the watch will not set the correct time. See “Setting the Time and Date Manually” for details.
•Note that signal reception is possible only when the watch is within range of a time calibration signal transmitter, and a city code that supports signal reception is selected as the Home City code.
•The current time setting in accordance with the time calibration signal takes priority over any time settings you make.
•Auto receive is turned on when the watch is shipped from the factory.
•See the information under “Time Calibration Signal Reception” if you experience problems with time calibration signal reception.
To perform manual time calibration signal reception
1.Place the watch on a stable surface so its top (12 o'clock side) is facing in the general direction of the signal transmitter.
• Note that signal reception is poor if the watch is on its back or side.
2.In the Timekeeping Mode, hold down A for about two seconds until the watch beeps.
•Release A and the message receiving appears to indicate that signal reception has started.
•Time calibration signal reception takes from two to six minutes. Take care that you do not move the watch during this time.
•After signal reception is complete, the display of the watch changes to the Last Signal screen.
•The receive indicator indicates that the calibration
Receive indicator time reception attempt was successful.
Note
•To interrupt a receive operation and return to the Timekeeping Mode, press
A.
•If the receive operation is unsuccessful, the message ERROR! appears on the display for about one or two minutes. After that, the watch returns to the Timekeeping Mode.
•You can also change from the Last Signal or ERROR! screen to the normal timekeeping screen by pressing A.
About the Receive Indicator
The receive 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.
Weak 
Strong
•Even in an area where signal strength is strong, it takes about 10 seconds for signal reception to stabilize enough for the receive indicator to indicate signal strength.
•Use the receive indicator as a guide for checking signal strength and for finding the best location for the watch during signal receive operations.
•The receive indicator remains on the display in all modes following reception of the time calibration signal and calibration of the watch’s time setting. The receive indicator does not appear if signal reception was unsuccessful or after manual adjustment of the current time setting.
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USER’S GUIDE 2510
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 2:00 AM, 4:00 AM and 6:00 AM each day (calibration times).
Note
•The auto receive operation is performed only if the watch is in the Timekeeping or World Time Mode when one of the calibration times is reached.
It is not performed if a calibration time is reached while you are making settings (while settings are flashing on the display), while an alarm is sounding, or while a silent alert operation is being performed.
•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.
•The receive indicator indicates that either the 2:00 AM, 4:00 AM, or 6:00 AM calibration signal reception was successful. Note, however, that the receive indicator is cleared from the display at 3:00 AM each day.
•If you do not see the receive indicator except for the above reason, it means there was some problem with the calibration reception operation. Either perform reception manually, or make sure the watch is set up properly to receive the time calibration signal for the next automatic reception time.
•When auto receive is turned on, the watch receives the calibration signal for two to six minutes each day when the Timekeeping Mode time reaches 2:00 AM, 4:00 AM and 6:00 AM. Do not operate any of the watch’s buttons within six minutes prior to or following the calibration times. Doing so can interfere with correct calibration.
•Remember that reception of the calibration signal depends on the time kept in the Timekeeping Mode. The receive operation will be performed whenever the display shows 2:00 AM, 4:00 AM and 6:00 AM, regardless of whether or not the Timekeeping Mode time is actually the correct time.
•When two or three 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.
To turn auto receive on and off
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2.Press D to toggle auto receive on (ON) and off |
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3.Press B to exit the setting screen. |
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Setting the Time and Date Manually
Make sure you select your Home City code (the city code whose time and date you are setting) before change the current time and date settings. World Time Mode times are all displayed in accordance with the Timekeeping Mode settings. Because of this, World Time Mode times will not be correct if you do not select the proper Home City code before setting the time and date in the Timekeeping Mode.
To set the current time and date manually
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1.In the Timekeeping Mode, press B. This causes |
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the current auto receive on/off setting (the receive |
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indicator) to flash, which indicates the setting |
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2.Press C to move the flashing in the sequence |
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shown below to select other settings. |
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Auto |
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Frequency |
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City Code |
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Day |
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3. When the setting you want to change is flashing, use A and/or D to change it as described below.
Setting
Auto Receive
Frequency
City code
DST
12/24-Hour format
Hour, Minutes
Seconds
Month, Day, Year
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Use D (+) and A (–) to change the setting. |
Press D to toggle between Daylight Saving
Time (ON) and standard time (OFF).
•Pressing D performs a different operation when HKG, TYO, SEL, NYC, CHI, DEN,
LAX, ANC or HNL is selected as Home City Code. See “Auto Summer Time (DST) Switching”.
Press D to toggle between 12-hour (12H) and 24-hour (24H) timekeeping.
Use D (+) and A (–) to change the setting.
Press D to reset the seconds to 00.
Use D (+) and A (–) to change the setting.
4. Press B to exit the setting screen.
•The auto receive setting is used for time calibration signal reception only. See “About Auto Receive” for details.
•See “City Code Table” at the back of this manual for a complete list of available city codes.
•Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes.
World Time
GMT
differential City code
Current time in the selected city code
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 Table” at the back of this manual.
•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.
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 A 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
1.In the World Time Mode, use A and D to display the city code (time zone) whose standard time/
Daylight Saving Time setting you want to change. 2.Press B to toggle Daylight Saving Time (DST
displayed) and standard time (DST 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.
•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 Timekeeping Mode’s Home City code time.
Alarms
Alarm on indicator
Alarm screen name/
Reminder text
Alarm time
Alarm name indicator
The Alarm Mode gives you a choice of four one-time alarms and one snooze alarm. You can select either an audible beeper or flashing silent alert to let you know when any of the alarm times is reached.
You can also input reminder text that appears when the alarm time is reached.
Also use the Alarm Mode to turn the Hourly Time Signal on and off.
•All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C .
To display Alarm Mode screen
In the Alarm Mode, use D to cycle through the alarm screens as shown below.
ALARM1 
ALARM2 
ALARM3 
ALARM4 
SNOOZE 
SIGNAL
Alarm1
Alarm2
Alarm3
Alarm4
Snooze
To set an alarm
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• The following alarm screen names appear in the center of the display to indicate the alarm whose screen is currently displayed.
ALARM1 through ALARM4: One-time alarm screen SNOOZE: Snooze alarm screen
SIGNAL: Hourly Time Signal screen
•The currently displayed alarm screen is also indicated by the alarm name indicators along the bottom left of the watch's display.
1.In the Alarm Mode, use D to select the alarm whose time you want to set.
2.Press B and the hour setting of the alarm time starts to flash, which indicates the setting screen.
•Pressing A and D at the same time resets the alarm time to 12:00 AM, and clears the reminder text in the upper part of the display (if there is any).
3.Press C to move the flashing in the sequence shown below to select other settings.
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•Selecting the text causes the text input cursor to appear. You can input up to eight characters of reminder text for each alarm.
•There are eight spaces in the text, so you have to press C eight times to move to the Hour setting.
4.When the setting you want to change is selected, use A and D to change it.
•While the hour or minute setting is flashing, use D (+) and A (–) to change it.
•When setting the alarm time using the 12-hour format, take care to set the time correctly as a.m. (no indicator) or p.m. (P indicator).
•When inputting text, use A and D to cycle through characters at the current cursor location, and C to move the cursor to the right. See “Inputting Text” for more information.
5.Press B to exit the setting screen.
•If you input reminder text, the text appears in place of the alarm screen name when you exit the setting screen.
•If the reminder text has more than six characters, it will scroll from right to left whenever it is displayed.
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