Casio 438 manual

MA0904-EA

Operation Guide 437/438

Reading The Display

Calendar		Regular timekeeping		Time
			P.M.
Day				Minute Press
	Date	Press	Hour
Month			.	Day	.
Year				Second
Release	Press	Release	.
.	.

Module No. 437

Module No. 438	MO: Monday
SU: Sunday
TU: Tuesday	WE: Wednesday
TH: Thursday	FR: Friday
SA: Saturday

(Reversion to regular time) The watch reverts to the regular timekeeping display after operating in any mode.

(Auto-retrieve function) The calculator and alarm displays will automatically return to the regular timekeeping display in 5 or 6 minutes.

Calculator		Daily Alarm Mode			Dual Time Mode			Stopwatch
Mode									Mode
	Alarm-ON-mark				P.M.
		Time-signal-ON-mark				Mode indicator			Mode indicator
			Hour		Hour			Minute
		A.M.		Minute		Minute			Second
			Mode indicator				Second		1/100 second

Calculator Operation

Appears when a number is set as		A function command sign
a constant.		Perform the four basic
8-digit entry (7-digit for negatives)		calculations. An incorrect function
can be made.		command is corrected by
Enters numerals. For decimal		pressing the correct button.
		Clears entry for correction.
places, use the	key in its
logical sequence.		Releases overflow or error
		check. Overflow is indicated
		by an “E” sign and stops the
		calculation. Overflow occurs
		when the integer part of an
		answer whether intermediate
		or final, exceeds 8 digits (7
	Module No. 437	digits for negatives).
		Obtains answer.

Stopwatch Operation

	A signal confirms start/stop operation. The tone sounds at
	10-minute intervals.
	(Working range) The stopwatch display is limited to 23
	hours 59 minutes 59.99 seconds.
	Thereafter it can be reset and started again. The hour
	digits can be shown by pressing the		button.
Module No.437	Lap indicator
	Press	.
	Release		.
	Minute		Hour
	Second
	1/100 second
Module No.438

Module No. 438

	EXAMPLE		OPERATION READ-OUT
Basic
calculation:
(12 – 0.5) ⋅ 3 ⎟ 7 12				5
= 4.9285714 ...			3	7
Constant
calculation:
3	+ 4	= 7
(4 is constant)			4	3
8	+ 4	= 12	8
3	– 4	= –1	4	3
8	– 4	= 4	8

	EXAMPLE	OPERATION READ-OUT
3	⋅ 4 = 12
(4 is constant)		4	3
8	⋅ 4 = 32	8
3	⎟ 4 = 0.75	4	3
8	⎟ 4 = 2	8
Power
calculation:
32		3
33		3

(a) Net time measurement
	(Time loss)
Start	Stop	Re-start	Stop	Reset
(b) Lap time measurement
Start	Lap	Lap release	Stop	Reset
(c) 1st-2nd place times
Start	Lap	Stop	Lap release	Reset
	The first runner	The second runner	Record the time of
	finishes.	finishes.	the second runner.
		Record the time of
		the first runner.

To save battery power, press the Bbutton in the calculator mode to silence the tone. To retrieve sound, press the Bbutton again.

Setting Daily Alarm Time

Every time the button is pressed in the alarm time mode, the alarm-ON-mark

( ) appears or disappears. When the alarm-ON-mark is lit, the buzzer sounds for 20 seconds at the preset time every day until cleared. To stop the buzzer while sounding, press any button.

(Setting the time signal) Every time the button is pressed in the alarm time mode, the time-signal-ON-mark ( ) appears or disappears. When the time-signal-ON-mark is lit, the watch sounds every hour on the hour.

(Sound demonstration) While both	and	buttons are pressed simultaneously,
the buzzer sounds.
[Presetting alarm time]

1)Press Bto set new alarm time.

2)Press to set PM or AM.*

3)A numeral can be entered in the flashing position by pressing the required numeral key.

The flashing digit can be shifted in the following order:

10-HOUR HOUR 10-MINUTE MINUTE

Setting Time And Calendar

1)To set time and calendar, press B in the regular timekeeping mode.

2)Press the key on a time signal to correct seconds.

3)The flashing position can be shifted by pressing Cin the following order:

SECOND AM/PM 10-HOUR HOUR 10-MINUTE

DATE MONTH YEAR MINUTE

AM or PM can be entered by pressing the button.*

4)A numeral can be entered in the flashing position by pressing the required numeral key.

5)Press Bto complete setting.

*While setting time and calendar, with every push of , the display is switched between 12-hour and 24-hour formats.

4) Press Bto complete setting.

* When the watch is in the 24-hour system, the alarm time is displayed in that system.

Setting Dual Time

1)Press Bto set new time in dual time mode.

2)Press to set PM or AM.*

3)A numeral can be entered in the flashing position by pressing the required numeral key. The flashing digit can be shifted in the following order:

10-HOUR HOUR 10-MINUTE MINUTE

4) Press Bto complete setting.

* When the watch is in the 24-hour system, the dual time is displayed in that system.

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