Casio 1627 Owner's Manual

Module No.1627/2023

GENERAL GUIDE

•Press C to change from mode to mode.

•In the Timekeeping Mode and Alarm Mode, press D to illuminate the display for about two seconds. In the Countdown Alarm Mode and Stopwatch Mode, press E to illuminate the display. The watch can be set so that the backlight flashes whenever an alarm sounds.

Timekeeping Mode	Countdown Alarm	Stopwatch Mode	Alarm Mode
	Mode

[Module 2023]

[Module 1627]

The operational procedures for Module 1627 and 2023 are identical. All of the illustrations in this manual show Module 1627.

TIMEKEEPING MODE

Graphic display

Day of the week Month

Day

Hour Seconds Minutes

PM indicator

This watch is equipped with a backlight that can be set to flash whenever an alarm sounds.

•In the Timekeeping Mode, press B to switch between the 12-hour and 24-hour formats.

•In the Timekeeping Mode, the Graphic Display indicates the counting of seconds.

To set the time and date

1.Press A while in the Timekeeping Mode. The seconds digits flash on the display because they are selected.

2.Press C to change the selection in the following sequence.

Seconds Hour Minutes

Day

Month

Year

3.While the seconds digits are selected (flashing), press E to reset the seconds to “00”. If you press E while the seconds count is in the range of 30 to 59, the seconds are reset to “00” and 1 is added to the minutes. If the seconds count is in the range of 00 to 29, the minutes count is unchanged.

4.While any other digits (besides seconds) are selected (flashing), press E to increase the number or B to decrease it. Holding down either button changes the current selection at high speed.

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

•The day of the week is automatically set in accordance with the date.

•The date can be set within the range of January 1, 1995 to December 31, 2039.

•If you do not operate any button for a few minutes while a selection is flashing, the flashing stops and the watch goes back to the Timekeeping Mode automatically.

About the backlight

•The backlight of this watch employs an electro-luminescent (EL) light, which loses its illuminating power after very long term use.

To turn the EL Alarm feature on and off

•In the Timekeeping Mode, hold down E until the EL Alarm indicator appears on (EL alarm on) or disappears from (EL alarm off) the display.

EL Alarm indicator

ON

OFF

•The EL Alarm indicator remains on the display in all modes.

•The above operation controls operation of the EL Alarm only. It does not affect operation of audible tones and signals.

•Pressing D (Timekeeping Mode, Alarm Mode) or E (Countdown Alarm Mode, Stopwatch Mode) illuminates the display for about two seconds, regardless of the EL Alarm’s on/off setting.

•The watch will emit an audible sound whenever the display is illuminated. It does not indicate malfunction of the watch.

COUNTDOWN ALARM MODE

Mode indicator

Current time

Minutes

Seconds

1/10 second

The countdown alarm can be set within a range of 1 minute to 60 minutes. When the countdown reaches zero, an alarm sounds for 10 seconds or until you press any button.

To set the countdown start time

Press B to increase the selected number. Holding down B changes the selection at high speed.

To use the countdown alarm

1.Press D while in the Countdown Alarm Mode to start the countdown alarm.

2.Press D again to stop the countdown alarm.

•You can continue countdown alarm operation by pressing D.

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

•The countdown alarm is automatically reset to its starting value after the alarm stops.

About countdown indicators

An audible beep and the EL backlight keep you informed about the progress of the countdown as noted in the following table.

Remaining	Audible beep	EL Backlight
Start (pressing D)	1 second	1 second
5' 00"	1 second	1 second
4' 00"~1' 00"	1 second	—
Time up (00' 00")	10 seconds	10 seconds

STOPWATCH MODE

Mode indicator

Hours

Minutes

Seconds

1/100 second

To record split times

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

To measure elapsed time

1.Press D to start the stopwatch.

2.Press D to stop the stopwatch.

•You can resume the measurement operation by pressing D again.

3.Press B to clear the stopwatch to all zeros (0H 00'00"00).

1.Press D to start the stopwatch.

2.Press B to display the timing up to that point. Stopwatch timing continues internally.

3.Press B to clear the split time and to continue time measurement on the display.

• You can repeat steps 2 and 3 as many times as you want.

4.Press D to stop the time measurement.

5.Press B to clear the stopwatch to all zeros.

To time first and second place finishes

1.Press D to start the stopwatch.

2.Press B when the first finisher crosses the line, and record the time.

3.Press D when the second finisher crosses the line.

4.Press B to display the finishing time of the second finisher.

5.Press B again to clear the stopwatch to all zeros.

ALARM MODE

	Hourly time signal	When the Daily Alarm is switched on, the alarm sounds
		for 20 seconds at the preset time each day. Press any
	on indicator
		button to stop the alarm after it starts to sound.
	Mode indicator
		When the Hourly Time Signal is switched on, the watch
	Current time beeps every hour on the hour.
		To set the alarm time
		1. Press A while in the Alarm Mode. The hour digits flash
		on the display because they are selected.
		At this time the Daily Alarm is switched on automati-
		• cally.

Minutes

Hour

Alarm on indicator

2. Press C to change the selection in the following sequence.

Hour				Minutes

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

•The format (12-hour and 24-hour) of the alarm time matches the format you select for normal timekeeping.

•When setting the alarm time using the 12-hour format, take care to set the time correctly as morning or afternoon (P) .

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

To switch the Daily Alarm and Hourly Time Signal on and off

Press E while in the Alarm Mode to change the status of the Daily Alarm and Hourly Time Signal in the following sequence.

[Alarm ON Indicator/Hourly Time Signal ON Indicator]

Both ON	Both OFF	Daily Alarm	Hourly Time
		only	Signal only

To test the alarm

Hold down B while in the Alarm Mode to sound the alarm.