Download Casio Watch 438 User's Manual

MA0904-EA
Operation Guide 437/438
Reading The Display
Calculator
Mode
Regular timekeeping
Calendar
Day
Month
Date
Press
.
Alarm-ON-mark
Time
P.M.
Hour
Minute
Day
Second
Year
Release
.
Release
Press
.
Daily Alarm Mode
Dual Time Mode
P.M.
Time-signal-ON-mark
Press
.
.
Stopwatch
Mode
Hour
A.M.
Minute
Mode indicator
Mode indicator
Mode indicator
Hour
Minute
Minute
Second
Second
1/100 second
Module No. 437
Module No. 438
SU: Sunday
TU: Tuesday
TH: Thursday
SA: Saturday
MO: Monday
WE: Wednesday
FR: Friday
(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 Operation
Stopwatch Operation
Appears when a number is set as
a constant.
A function command sign
8-digit entry (7-digit for negatives)
can be made.
Perform the four basic
calculations. An incorrect function
command is corrected by
pressing the correct button.
Enters numerals. For decimal
places, use the
key in its
logical sequence.
Module No. 437
Clears entry for correction.
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
digits for negatives).
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.
Lap indicator
Module No.437
Press
.
Release
Minute
.
Hour
Second
1/100 second
Obtains answer.
Module No.438
Module No. 438
(a) Net time measurement
EXAMPLE
OPERATION READ-OUT
Basic
calculation:
5
(12 – 0.5) × 3 ÷ 7 12
3
7
= 4.9285714 ...
Constant
calculation:
3+4=7
(4 is constant)
4
8 + 4 = 12
8
3 – 4 = –1
4
8–4=4
8
EXAMPLE
3 × 4 = 12
(4 is constant)
8
3 ÷ 4 = 0.75
4
3
33
3
To save battery power, press the B button in the calculator mode to silence the tone.
To retrieve sound, press the B button again.
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 B to 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:
HOUR
Reset
Start
Lap release
Stop
Reset
Lap
Stop
Lap release
Reset
The first runner
finishes.
The second runner
finishes.
Record the time of
the first runner.
Record the time of
the second runner.
Lap
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 C in the following order:
Setting Daily Alarm Time
10-HOUR
Stop
(c) 1st-2nd place times
Start
3
Re-start
(b) Lap time measurement
8
32
Stop
3
Power
calculation:
3
(Time loss)
Start
8 × 4 = 32
8÷4=2
3
OPERATION READ-OUT
4
10-MINUTE
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 B to complete setting.
* While setting time and calendar, with every push of
, the display is switched
between 12-hour and 24-hour formats.
MINUTE
4) Press B to complete setting.
* When the watch is in the 24-hour system, the alarm time is displayed in that system.
Setting Dual Time
1) Press B to 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 B to complete setting.
* When the watch is in the 24-hour system, the dual time is displayed in that system.
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Operation Guide 437/438
Specifications
Accuracy at normal temperature: ±15 seconds a month
Display capacity:
• Regular timekeeping
Hour, minute, second, am/pm, year, month, date and day... on its double display
Time system: Changeover between 12/24 hour formats
Calendar system: Auto-calendar pre-programmed to the year 2079
• Calculator mode
8 digits (7 digits for negatives)
Abilities: Four basic calculations, chain & mixed operations, constants for + / – / ×
/ ÷, power calculation
Decimal point: Full floating with underflow
Overflow check: lndicated by the “E” sign, locking the calculator mode
• Stopwatch mode
Measuring capacity: 23 hours, 59 minutes, 59.99 seconds
Measuring unit: 1/100th of a second
Measuring modes: Normal time, net time, lap time and lst-2nd place times
• Dual time mode
• Daily alarm mode
• Hourly time signals
Battery:
• (Module No. 437)
One lithium battery [Type: CR-2016]
Approx. 5 years operation on type CR-2016 (lncludes the alarm for 20 seconds
and calculation for 1 hour per day)
• (Module No. 438)
One lithium battery [Type: CR-1616]
Approx. 3 years operation on type CR-1616 (lndudes the alarm for 20 seconds
and calculation for 1 hour per day)
NOTE: THERE IS NO WAY unit components can be damaged or malfunction, due to
misoperation of buttons. If confusing information appears on the display it
means entry sequence was incorrect. Please read the manual and try again.
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