USER’S GUIDE 2619
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.
The time calibration signal transmitted from Fort Collins, Colorado includes both Standard Time and DST data. When the auto DST setting is turned on, the watch switches between Standard Time and DST (summer time) automatically in accordance with the Fort Collins signal.
•The time calibration signals transmitted from the Fukushima and Fukuoka/Saga do not include summer time data.
•The auto DST setting can be turned on only while HNL, ANC, LAX, DEN, CHI, NYC, TYO, SEL, or HKG is selected as the Home City code.
•If you experience problems receiving the time calibration signal in your area, it is probably best to switch between Standard Time and Daylight Saving Time (summer time) manually.
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down Auntil the seconds start to flash, which indicates the setting screen.
2. Press Cto display the DST setting screen.
3. Press Dto cycle through the DST settings in the sequence shown below.
Auto DST |
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| DST Off |
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| DST On |
(AUTO) |
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| (OFF) |
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| (ON) |
4. Press Ato exit the setting screen.
•The DST indicator appears on the display to indicate that Daylight Saving Time is turned on.
Reference
This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.
Auto Display
Auto Display continually changes the contents of the digital display.
To turn off Auto Display
Press any button to turn off Auto Display.
To turn on Auto Display
While the Mode Menu screen is on the display, press A and Cat the same time.
Inputting Text
The following describes how to input text in the Recall Mode,
To input characters | 1. When the cursor is on the display, press D to cycle | ||||
Cursor | |||||
through the available letters, numbers and symbols, in | |||||
| the sequence shown below. |
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| (space) | a to z |
| A to Z | |
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| to ) |
| 0 to 9 | |
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| (symbol) | (number) | ||
Recall Mode | 2. When the character you want is at the cursor position, | ||||
| press C to move the cursor to the right. | ||||
3. Repeat steps 1 and 2 to input the rest of the characters you want.
•See the “Character List” for information about the characters you can input.
Auto Return Features
•If you leave the watch without performing any operation in the Signal Receive, Recall,
•If you leave a screen with flashing digits or a cursor on the display for two or three minutes without performing any operation, the watch automatically exits the setting screen.
Scrolling
The B and Dbuttons are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.
Initial Screens
When you enter the
Time Calibration Signal Reception Precautions
•Signal reception is terminated if any alarm starts to sound while reception is being performed.
•Strong electrostatic charge can result in the wrong time being set.
•Even when the watch is within the reception range of the transmitter, signal reception is impossible if the signal is blocked by mountains or other geological formations between the watch and signal source.
•Signal reception is affected by weather, atmospheric conditions, and seasonal changes.
•The time calibration signal is bounced off the ionosphere. Because of this, such factors as changes in the reflectivity of the ionosphere, as well as movement of the ionosphere to higher altitudes due to seasonal atmospheric changes or the time of day may change the reception range of the signal and make reception temporarily impossible.
•Even if the time calibration signal is received properly, certain conditions can cause the time setting to be off by up to one second.
•The current time setting in accordance with the time calibration signal takes priority over any time settings you make.
•The watch is designed to automatically update the date and day of the week for the period January 1, 2000 to December 31, 2099. Setting of the date by the time calibration signal cannot be performed starting from January 1, 2100.
•This watch can receive signals that differentiate between leap years and
•Though this watch is designed to receive both time data (hour, minutes, seconds) and date data (year, month, day), certain signal conditions can limit reception to time data only.
•When all three auto receptions are successful (2:00 AM, 4:00 AM, and 5:00 AM), 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.
•Normally, the signal reception date shown by the Last Signal screen is date data that is included in the received time calibration signal. When only time data is received, however, the Last Signal screen shows date as kept in the Timekeeping Mode at the time of signal reception.
•If you are in an area where proper time calibration signal reception is impossible, the watch keeps time within ± 15 seconds a month at normal temperature.
•If you have problems with proper time calibration signal reception or if the time setting is wrong after signal reception, check your current city code and DST (summer time) settings, and auto receive setting. The following are the initial factory defaults for these settings.
Setting | Initial Factory Default | |
City code | NYC | (New York) |
DST (summer time) | AUTO(Auto switching) | |
Auto receive | On | (Auto receive) |
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Japan Signal Frequencies
When you have TYO (Tokyo) selected as the Home City code, you can use the following procedure to specify either 40kHz or 60kHz as the reception frequency. The frequency you should use depends on your current location in Japan. See the map under “Important!” for more information.
To select a frequency for use in Japan
1.Enter the Signal Receive Mode.
2.Hold down A until FREQ.appears, with the receiving
| indicator (Level 4) flashing. This is the setting screen. |
| 3. Use Dto select the frequency you want to use. |
| • Each press of Dcycles through the available |
| frequencies as described below. |
| 40:60 : The watch automatically selects the |
| frequency that has the strongest signal. |
| 40 : Receives the signal from Fukushima (40kHz). |
| 60 : Receives the signal from Fukuoka/Saga |
| (60kHz). |
Frequency | 4. Press Ato exit the setting screen. |
| • Reception can take up to 12 minutes when the 40:60 |
| option is selected. |
Timekeeping
•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.
•The day of the week is automatically displayed in accordance with the date (year, month, and day) settings.
•The year can be set in the range of 2000 to 2099.
•The watch’s
•The current time for all city codes in the Timekeeping Mode and World Time Mode is calculated in accordance with the Greenwich Mean Time (GMT) differential for each city, based on your Home City time setting.
•GMT differential is calculated by this watch based on Universal Time Coordinated (UTC*) data.
*The letters “UTC” stands for “Universal Time Coordinated,” which is the
12-hour/24-hour Timekeeping Formats
The
•With the
•With the
Backlight Precautions
The backlight uses an EL
•The
•The illumination provided by the backlight may be hard to see when viewed under direct sunlight.
•The watch may emit an audible sound whenever the display is illuminated. This is due to vibration of the EL panel used for illumination, and does not indicate malfunction.
•The backlight automatically turns off whenever an alarm sounds.
•Frequent use of the backlight shortens the life of the battery.
Battery
The indicator BATT flashes on the display any time battery power is below a certain level. Low battery power can cause the following conditions to occur.
•Dim,
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| • | Failure of the backlight and beeper tone operations |
| l l | l l l l l |
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| • | Inability to perform time calibration signal reception |
| l | l l l l l | l | l | • | Inability to create a time memo, or to perform Recall | |
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| Mode, and |
If battery power goes low while you are inputting Time Memo,
Always leave battery replacement up to the dealer where you bought the watch or to an authorized CASIO distributor. Be sure to show the “Attention dealer or CASIO distributor” information to the person replacing the battery.
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