Casio 3550 - User Manual

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Operation Guide 3550

EN-9

Stopwatch Mode Time Setting

Alarm Mode

x After you perform an operation in any mode, pressing C returns to the

Timekeeping Mode.

x Press B in any mode to illuminate the face of the watch.

EN-8

Selecting a Mode

x Press C to change the mode.

* SU: Sunday MO: Monday TU: Tuesday WE: Wednesday TH: Thursday FR: Friday

SA: Saturday

Timekeeping Mode

PM indicator

Day of week*

Month Day Year

Month Day

Hour : Minute

Second

EN-7

3. Use D to change the selected setting.

Screen This setting item:

Reset the second to 00

x 30 to 59 seconds: Adds 1 to minutes

Change the hour or minute

x Holding down D changes the current selection at high speed.

Toggle between 12-hour (12HR) and 24-hour (24HR)

timekeeping

Change the year, month, day, or day of the week

x Holding down D changes the current selection at high speed.

4. Press C to exit the setting screen.

x The watch returns to the Timekeeping Mode automatically if you do not perform

any button operation for one or two minutes in the Time Setting Mode.

EN-6

Configuring Time and Date Settings

To configure time and date settings

1. In the Timekeeping Mode, press C three times. This causes

the seconds to flash on the display.

2. Press A to move the flashing in the sequence shown below

to select a setting.

Second Hour

Month

Minute

12/24-Hour Format

Year

Day of the week

Day

EN-5

Watch Features

You can also find information

about operational procedures

at the CASIO website.

https://s.casio.jp/mw/en/3550/

◆

Alarm

◆

Stopwatch

EN-4

Main Indicators ................................................................................................. EN-15

Specifications ................................................................................................... EN-16

EN-3

Contents

About This Manual .............................................................................................. EN-2

Watch Features ................................................................................................... EN-5

Configuring Time and Date Settings ................................................................. EN-6

To configure time and date settings ................................................................EN-6

Selecting a Mode ................................................................................................ EN-8

Alarm .................................................................................................................. EN-11

To set the alarm time .....................................................................................EN-12

To stop the alarm ...........................................................................................EN-13

To enable and disable the Daily Alarm and Hourly Time Signal .....................EN-13

To test the alarm ............................................................................................EN-13

Stopwatch ......................................................................................................... EN-14

To measure elapsed time ...............................................................................EN-14

EN-2

About This Manual

x Button operations are indicated using the letters shown in

the illustration.

x Each section of this manual provides you with the information

you need to perform operations in each mode.

x Note that the product illustrations in this manual are intended

for reference only, and so the actual product may appear

somewhat different than depicted by an illustration.

EN-1

ENGLISH

You can also find information about

operational procedures at the CASIO website.

https://s.casio.jp/mw/en/3550/

MA2209-EA

Need help?

Do you have a question about the Casio 3550 and is the answer not in the manual?

Summary

Configuring Time and Date Settings

To Configure Time and Date Settings

Step-by-step instructions to adjust the watch's time and date settings.

Alarm

To Set the Alarm Time

Procedure for setting the desired alarm time.

To Stop the Alarm

How to silence the alarm once it sounds.

To Enable and Disable Daily Alarm and Hourly Time Signal

Instructions for activating or deactivating the daily alarm and hourly chime.

To Test the Alarm

How to manually trigger the alarm sound for testing.

Stopwatch

To Measure Elapsed Time

Steps for using the stopwatch to record time intervals.

Summary

Configuring Time and Date Settings

To Configure Time and Date Settings

Step-by-step instructions to adjust the watch's time and date settings.

Alarm

To Set the Alarm Time

Procedure for setting the desired alarm time.

To Stop the Alarm

How to silence the alarm once it sounds.

To Enable and Disable Daily Alarm and Hourly Time Signal

Instructions for activating or deactivating the daily alarm and hourly chime.

To Test the Alarm

How to manually trigger the alarm sound for testing.

Stopwatch

To Measure Elapsed Time

Steps for using the stopwatch to record time intervals.

This document describes the CASIO Operation Guide 3550, a digital watch with various timekeeping, alarm, and stopwatch functionalities.

Function Description:

The CASIO Operation Guide 3550 is a digital watch designed for everyday use, offering precise timekeeping along with several practical features. Its core function is to display the current time and date, which can be configured by the user. The watch supports both 12-hour and 24-hour timekeeping formats, and its full auto-calendar function ensures accurate date display from the year 2000 to 2099.

Beyond basic timekeeping, the watch includes an alarm function. Users can set a daily alarm that sounds for 20 seconds at a preset time. Additionally, it features an hourly time signal, which causes the watch to beep every hour on the hour. Both the daily alarm and hourly time signal can be independently enabled or disabled, providing flexibility for different user preferences. A test function is also available to check the alarm sound.

Another key feature is the stopwatch mode, which allows for precise measurement of elapsed time. The stopwatch can measure time in 1/100 second increments, making it suitable for tracking various activities. It supports standard stopwatch operations: start, stop, resume, and reset.

The watch also incorporates an LED light for illumination, ensuring readability in low-light conditions. This feature enhances the watch's usability across different environments.

Important Technical Specifications:

Accuracy: The watch maintains an average accuracy of ±30 seconds per month, ensuring reliable timekeeping.
Basic Functions:
- Time Display: Hour, minute, second, year, month, day, and day of the week.
- Time Formats: Supports both a.m./p.m. (P) for 12-hour format and 24-hour timekeeping.
- Calendar: Full Auto Calendar, effective from the year 2000 to 2099, eliminating the need for manual date adjustments for leap years.
Alarm:
- Setting Units: Hour, minute.
- Beeper Duration: The alarm sounds for 20 seconds.
- Hourly Time Signal: The watch beeps every hour on the hour when enabled.
Stopwatch:
- Measuring Units: 1/100 second.
- Measuring Capacity: The stopwatch can measure up to 59 minutes, 59.99 seconds (equivalent to 60 minutes).
Battery:
- Type: CR1216 x 1.
- Battery Life: Approximately 2 years under specific conditions.
- Battery Life Conditions: Based on alarm usage once (20 seconds)/day and illumination once (1.5 seconds)/day.
Illumination: Features an LED light for display illumination.

Usage Features:

The watch's operation is designed to be intuitive, primarily relying on a few buttons (A, B, C, D) for navigation and setting adjustments.

Mode Selection: Pressing button C allows users to cycle through different modes, including Timekeeping Mode, Alarm Mode, and Stopwatch Mode. After performing an operation in any mode, pressing C returns the watch to the Timekeeping Mode.
Time and Date Configuration:
1. In Timekeeping Mode, press C three times to enter the time setting mode, where the seconds will flash.
2. Press A to move the flashing selection through seconds, hour, minute, 12/24-hour format, year, month, day, and day of the week.
3. Use button D to change the selected setting. Holding down D allows for high-speed adjustment.
4. Press C to exit the setting screen. The watch automatically returns to Timekeeping Mode if no button operation is performed for one or two minutes.
- Second Reset: The seconds can be reset to 00. If the current second count is between 30 and 59, resetting adds one minute to the time.
- Time Format Toggle: Users can switch between 12-hour (12HR) and 24-hour (24HR) timekeeping.
Alarm Setting:
1. In Alarm Mode, press A to enter the alarm setting mode.
2. Use D to adjust the flashing hour or minute digits. Holding down D enables high-speed adjustment.
3. Press A to move between hour and minute settings.
4. Press C to return to the Timekeeping Mode.
Alarm and Hourly Time Signal Control:
- In Alarm Mode, pressing D cycles through enabling/disabling both the Daily Alarm and Hourly Time Signal, enabling only the Daily Alarm, enabling only the Hourly Time Signal, or disabling both.
- To test the alarm sound, hold down D while in Alarm Mode.
- To stop a sounding alarm, press any button.
Stopwatch Operation:
- In Stopwatch Mode, D is used to start, stop, and resume the stopwatch.
- A is used to reset the stopwatch to 00.00 after it has been stopped.
Illumination: Pressing button B in any mode illuminates the watch face.

Maintenance Features:

The manual provides general information about the watch's specifications, which indirectly relate to maintenance.

Battery Replacement: The watch uses a CR1216 x 1 battery, with an approximate life of 2 years. When the battery runs low, it will need to be replaced by a qualified technician or according to the instructions in a more detailed service manual (not included in this guide). The specified battery life is based on typical usage, so actual life may vary depending on how frequently the alarm and illumination functions are used.
Accuracy Adjustment: While the watch has a specified accuracy of ±30 seconds per month, significant deviations might indicate a need for professional inspection or adjustment.
General Care: Although not explicitly detailed as maintenance features, the "About This Manual" section notes that product illustrations are for reference, implying that users should handle the actual product with care, as its appearance might slightly differ. The manual also directs users to the CASIO website for more operational procedures, which may include further maintenance tips or troubleshooting guides.

Overall, the CASIO Operation Guide 3550 describes a robust and user-friendly digital watch with essential timekeeping, alarm, and stopwatch functions, designed for reliability and ease of use.