CASIO 3549 (02) PDF Document

On the CASIO 3549, button operations are indicated using the letters A, B, C, and D, as shown in the illustrations in the operation guide.

The main features of the CASIO 3549 include:

◆ Timer

◆ Stopwatch

◆ Alarm

◆ Dual Time

Press the C button to change from mode to mode. The mode sequence is as follows:

Timekeeping Mode → Timer Mode → Stopwatch Mode → Alarm Mode → Dual Time Mode → Timekeeping Mode

To return to the Timekeeping Mode from any other mode, hold down the C button for one or two seconds. If you ever lose track of what mode you are in, hold down C to return to regular timekeeping.

Additionally, after you perform an operation in any mode, pressing C returns to the Timekeeping Mode. If you do not press any button for a few minutes while making settings, the watch automatically clears the setting screen and returns to the normal display for that mode.

In any mode, press the L button to illuminate the display.

1. Hold down A while in the Timekeeping Mode until the seconds digits flash on the display.

2. Press C to change the selection in the following sequence: Seconds → Hour → Minutes → 12/24-Hour Format → Year → Month → Day.

3. While the seconds digits are flashing, press D to reset the seconds to 00. If you press D while the seconds count is between 30 and 59, the seconds are reset to 00 and 1 is added to the minutes. If the seconds count is between 00 and 29, the minutes count is unchanged.

4. While any other digits are flashing, press D to increase the number or B to decrease it. Holding down either button changes the selection at high speed.

5. While the 12/24-hour format setting is selected, press D or B to toggle it between 12-hour and 24-hour format. When the 12-hour format is selected, the indicator P appears for P.M. times. When the 24-hour format is selected, the indicator 24 appears.

6. The year can be set in the range of 2000 to 2099.

7. After you set the time and date, press A to return to the Timekeeping Mode.

The watch’s built-in full automatic calendar automatically adjusts for different month lengths and leap years.

When the auto light switch function is turned on, the backlight automatically turns on for two seconds when you move the watch to a position that is parallel to the ground and then tilt it towards you approximately 40 degrees. Avoid wearing the watch on the inside of your wrist, as this can cause the function to operate when not needed, shortening battery life.

The backlight may not illuminate if the face of the watch is more than 15 degrees off parallel. Ensure the back of your hand is parallel to the ground.

Static electricity or magnetic force can interfere with proper operation. If it does not illuminate, try moving the watch back to the starting position (parallel with the ground) and then tilt it back toward you again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again.

In the Timekeeping Mode, hold down B for one or two seconds to turn the auto light switch function on and off.

The auto light switch indicator is shown on the display in all modes while the function is on.

To protect against running down the battery, the auto light switch function automatically turns off approximately three hours after you turn it on. Repeat the procedure to turn it back on if you want.

Caution: Frequent use of the backlight shortens the battery life.

Warning!

• Never try to read your watch when mountain climbing or hiking in areas that are dark or in areas with poor footing. Doing so is dangerous and can result in serious personal injury.

• Never try to read your watch when running where there is the danger of accidents, especially in locations where there might be vehicular or pedestrian traffic. Doing so is dangerous and can result in serious personal injury.

• Never try to read your watch when riding on a bicycle or when operating a motorcycle or any other motor vehicle. Doing so is dangerous and can result in a traffic accident and serious personal injury.

• When you are wearing the watch, make sure that its auto light switch function is turned off before riding on a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury.

1. Hold down A while in the Timer Mode. The hours digits flash on the display.

2. Press C to change the selection in the following sequence: Hour → Minutes → Seconds.

3. Press D to increase the selected number or B to decrease it. Holding down either button changes the selection at high speed.

4. Press D and B at the same time to clear the starting time to 0:00′ 00″. To set the starting value to 24 hours, set 0:00′ 00″.

5. After you set the countdown start time, press A twice to return to the Timer Mode.

1. Press D while in the Timer Mode to start the timer.

2. Press D again to stop the timer. You can resume timer operation by pressing D.

3. Stop the timer and then press B to reset the countdown time to its starting value.

When the end of the countdown is reached and auto repeat timing is off, the alarm sounds for 10 seconds or until you stop the alarm by pressing any button. Countdown timing stops and the countdown time is automatically reset to its starting value after the alarm stops.

1. Hold down A while in the Timer Mode. The hour digits will flash. Press A again to move the flashing to the auto repeat ON/OFF setting.

2. Press D or B to toggle auto repeat on and off.

3. Press C to move the flashing to the progress beeper ON/OFF setting.

4. Press D or B to toggle the progress beeper on and off.

5. Press A to return to the Timer Mode.

When auto repeat is on, the alarm sounds when the countdown ends, but the countdown restarts from the beginning without stopping. When the progress beeper is on, the watch beeps as the countdown time passes the 10, 5, 4, 3, 2, and 1-minute marks, and the 50, 40, 30, 20, 10, 5, 4, 3, 2, and 1-second marks.

The Stopwatch Mode lets you measure elapsed time, split times, and two finishes with a range of 23 hours, 59 minutes, 59.99 seconds.

(a) Elapsed time measurement

D (Start) → D (Stop) → D (Re-start) → D (Stop) → B (Reset)

(b) Split time measurement

D (Start) → B (Split) → B (Split release) → D (Stop) → B (Reset)

(c) Split time and two finishes

D (Start) → B (Split for first runner) → D (Stop for second runner) → B (Split release to record time of second runner) → B (Reset)

With the Auto-Start function, the watch performs a 5-second countdown. When the countdown reaches zero, stopwatch operation starts automatically. To turn this function on or off, while the display is showing all zeros in the Stopwatch Mode, press B to toggle it. The indicator AUTO-ST and “05” are shown in the upper display when Auto-Start is turned on.

1. While the display is showing all zeros in the Stopwatch Mode, hold down A, and the hour digit of the target time starts to flash.

2. Press C to change the selection in the following sequence: Hour → Minutes → Seconds.

3. Press D to increase the selected number or B to decrease it. Pressing D and B at the same time will clear the setting to 0:00′ 00″.

4. Press A to move the flashing to the target time ON/OFF setting.

5. Press D or B to toggle the target time on and off.

6. Press A to return to the Stopwatch Mode.

Important! The alarm will not sound if you do not turn on the target time. Press A, B, or D to stop the alarm after it starts to sound.

1. Hold down A until the hour digits start to flash on the display. The hour digits flash because they are selected. This operation will switch the Daily Alarm on automatically.

2. Press C to change the selection in the following sequence: Hour → Minutes.

3. Press D to increase the selected digits and B to decrease them. Holding down either button changes the selection at high speed.

4. The format (12-hour and 24-hour) of the alarm time matches the format you select for regular timekeeping. When setting the alarm time using the 12-hour format, take care to set the time correctly as morning (no indicator) or afternoon (P).

5. After you set the alarm time, press A to return to the Alarm Mode.

Press D while in the Alarm Mode to change the status of the daily alarm and hourly time signal in the following sequence:

Both OFF → Daily Alarm Only → Hourly Time Signal Only → Both ON

The alarm on indicator and the Hourly Time Signal on indicator are shown on the display in all modes while these functions are turned on.

Hold down B while in the Alarm Mode to sound the alarm. Note that pressing B also changes the alarm and the hourly time signal ON/OFF settings.

1. Hold down A while in the Dual Time Mode. The hour digits will flash on the display.

2. Press C to change the selection in the following sequence: Hour → Minutes.

3. Press D to increase the selected digits and B to decrease them. Holding down either button changes the selection at high speed.

4. After you set the time, press A to return to the Dual Time Mode.

In the Dual Time Mode, the seconds count is synchronized with the seconds count of the Timekeeping Mode. You can also press B to toggle between the 12-hour and 24-hour formats.

Accuracy at normal temperature: ±30 seconds per month

Timekeeping: Hour, minutes, seconds, pm (P), day of the week, month, day. Time format: 12-hour and 24-hour formats. Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099.

Timer: Measuring unit: 1/10 second. Input range: 1 second to 24 hours. Others: Auto repeat function, progress beeper function.

Stopwatch: Measuring unit: 1/100 second. Measuring capacity: 23 hours 59 minutes, 59.99 seconds. Measuring modes: Elapsed time, split time and two finishes. Others: Target Time Alarm, Auto-Start.

Alarm: Daily alarm, hourly time signal.

Dual Time

Illumination: LED (light-emitting diode).

Battery: One lithium battery (Type: CR1616), with a nominal voltage of 3V. Approximate battery life is 3 years under the following conditions:

• One 2-second light operation per day

• One 20-second alarm operation per day