Casio Watch 3240 User Guide

Casio Watch 3240

About Casio
Located in Shibuya, Tokyo, Japan, Casio Computer Co., Ltd. is an international electronics manufacturing company. Calculators, cell phones, digital cameras, electronic musical instruments, and analog and digital watches are among its offerings.

About This Manual

• The operational procedures for Modules 3239 and 3240 are identical. All of the illustrations in this manual show Module 3239.
• 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.

General Guide

• Press C to change from mode to mode.
• In any mode, press B to illuminate the display.
• In any mode, hold down C for about one second to return to the Timekeeping Mode.
• In the Alarm, Stopwatch, and Dual Time modes, the watch always shows the current Timekeeping Mode time in the lower display area.

Timekeeping

Use the Timekeeping Mode to set and view the current time and date.

To set the time and date

1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting screen.
2. Press C to move the flashing in the sequence shown below to select other settings.
3. When the setting you want to change is flashing, press D to change it as described below.
   • Pressing D, while the seconds are in the range of 30 to 59, resets them to 00 and adds 1 to the minutes. In the range of 00 to 29, the minutes are unchanged.
4. Press A to exit the setting screen.
   • The day of the week is automatically displayed by the date (year, month, and day) settings.
   • The year can be set in the range of 2000 to 2099.
   • The watch’s built-in full automatic calendar automatically makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced.

To toggle between 12-hour and 24-hour timekeeping

In the Timekeeping Mode, press D to toggle between 12-hour timekeeping and 24-hour timekeeping.

• With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for times in the range of noon to 11:59 p.m. and no indicator appears to the left of the hour digits for times in the range of midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without any indicator.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other modes.

Alarm

The multi-function alarm lets you specify the hour, minutes, month, and day for the alarm (page E-10). You can set up the alarm so it sounds once when the alarm time is reached, or for a snooze alarm that repeats up to seven times, every five minutes.
You can also turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour.

• Pressing D in the Alarm Mode toggles between the alarm screen (Alarm time displayed) and the Hourly Time Signal screen (:00 displayed).
• An alarm setting (and an Hourly Time Signal setting) is available in the Alarm Mode, which you enter by pressing C.

Alarm Types

The alarm type is determined by the settings you make, as described below.

• Daily alarm
  Set the hour and minutes for the alarm time. This type of setting causes the alarm to sound every day at the time you set it.
• Date alarm
  Set the month, day, hour, and minutes for the alarm time. This type of setting causes the alarm to sound at a specific time, on the specific date you set.
• 1-Month alarm
  Set the month, hour, and minutes for the alarm time. This type of setting causes the alarm to sound every day at the time you set, only during the month you set.
• Monthly alarm
  Set the day, hour, and minutes for the alarm time. This type of setting causes the alarm to sound every month at the time you set, it on the day you set it.

To set an alarm time

1. In the Alarm Mode, press D to display the alarm screen.
2. Hold down A until the hour setting of the alarm time starts to flash, which indicates the setting screen.
   • This operation automatically turns on the one-time alarm.
3. Press C to move the flashing in the sequence shown below to select other settings.
4. While a setting is flashing, press D to increase it.
   • To set an alarm that does not include a month (Daily alarm, Monthly alarm), set x for the month. Press D until the x mark appears (between 12 and 1) while the month setting is flashing.
   • To set an alarm that does not include a day (Daily alarm, 1-month alarm), set xx for the day. Press D until the xx mark appears (between the end of the month and 1) while the day setting is flashing.
   • When setting the alarm time using the 12-hour format, take care to set the time correctly as a.m. or p.m. (P indicator).
5. Press A to exit the setting screen.

Alarm Operation

The alarm tone sounds at the preset time for about 10 seconds. In the case of the snooze alarm, the alarm repeats up to seven times every five minutes.

• Pressing any button stops the alarm tone operation.
• The alarm and the Hourly Time Signal sound in all modes.

Select the alarm type

1. In the Alarm Mode, press D to display the alarm screen.
2. Press A to cycle through the available alarm settings shown below.

• The alarm on indicator and the snooze alarm on indicator are shown on the display in all modes while these functions are turned on.
• The snooze alarm on the indicator flashes during the 5-minute intervals between alarms.
• Displaying the Alarm Mode setting screen (page E-11) automatically changes the alarm type to a one-time alarm.
• Changing the Timekeeping Mode setting screen (page E-6) during a 5-minute interval between snooze alarms stops the current snooze alarm operation (but the snooze alarm remains as the alarm typesetting).
• If a snooze alarm time is reached while you are setting the current time in the Timekeeping Mode, the alarm sounds only once. Subsequent snooze alarm operations are not performed,

Stopping a Snooze Alarm Operation

After a snooze alarm time is reached, you can perform the following steps during any 5-minute interval between alarms to stop the snooze alarm operation.

To stop a Snooze Alarm Operation

1. While in the Alarm Mode, press D to display the alarm screen.
2. Next, press A to turn off the alarm or select the one-time alarm.
   • Note that this also changes the alarm type setting. If you want to use the snooze alarm again, you must re-select it as the alarm type. See “To select the alarm type” (page E-14) for more information.

To test the alarm

In the Alarm Mode, hold down D to sound the alarm.

To turn the Hourly Time Signal on and off

1. In the Alarm Mode, press D to display the Hourly Time Signal screen.
2. Press A to turn it on and off.
   • The Hourly Time Signal indicator is shown on the display in all modes while this function is turned on.

Stopwatch

The stopwatch lets you measure elapsed time, split times, and two finishes.

• The display range of the stopwatch is 23 hours, 59 minutes, and 59.99 seconds.
• The stopwatch continues to run, restarting from zero after it reaches its limit until you stop it.
• The stopwatch measurement operation continues even if you exit the Stopwatch Mode.
• Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time and returns to the elapsed time measurement.
• All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C (page E-5).

To measure times with the stopwatch

Dual Time

The Dual Time Mode lets you keep track of time in a different time zone.

• In the Dual Time Mode, the seconds count is synchronized with the seconds count of the Timekeeping Mode.

To set the Dual Time

1. Press C to enter the Dual Time Mode (page E-5).
2. In the Dual Time Mode, hold down A until the hour setting starts to flash, which indicates the setting screen.
3. Press C to change the selection in the following sequence.
4. Press D to increase the setting.
5. Press A to exit the setting screen.

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 return features

If you leave a screen with flashing digits for two or three minutes without performing any operation, the watch automatically saves any settings you have made up to that point and exits the settings screen.

Data and Setting Scrolling

The D button is used to scroll through setting screen data on the display. Holding down this button during a scroll operation scrolls through the data at high speed.

Backlight Precautions

The backlight uses an LED (light-emitting diode) and a light guide panel that causes the entire display to glow for easy reading in the dark. In any mode, press B to illuminate the display for about one second.

• The illumination provided by the backlight may be hard to see when viewed under direct sunlight.
• The backlight automatically stops illuminating whenever an alarm sounds.
• Frequent use of the backlight shortens the battery life.

Specifications

• Accuracy at normal temperature: ±30 seconds a month
• Timekeeping: Hour, minutes, seconds, p.m. (P), year, month, day, day of the week
• Time system: Switchable between 12-hour and 24-hour formats
• Calendar System: Full Auto-calendar pre-programmed from the year 2000 to 2099
• Alarm: Multi-function∗alarm (One-time or 7-time snooze); Hourly Time Signal ∗Alarm type: Daily alarm, date alarm, 1-month alarm, monthly alarm Stopwatch
• Measuring unit: 1/100 second
• Measuring capacity: 23:59′ 59.99”
• Measuring modes: Elapsed time, split time, two finishes
• Dual Time: Hour, minutes, seconds, p.m. (P)
• Other: Backlight (light-emitting diode)
• Battery: One lithium battery (Type: CR2025) Approximately 10 years on type CR2025 (assuming alarm operation 10 sec./day, and one backlight operation 1.5 sec./day)

Frequent use of the backlight shortens the battery life.

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