Casio QA-300 User manual

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-0A-300
Operating Instructions
Bedienungsanleitung
Instructions
Instrucciones de operacion
Istruzioni per l’uso

Contents
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, Using the Timer . SaSeges Suess evhobcaseuedareodcevndeveseoessVeeiscencesbaepeawssaatseress, TA
. Correcting input Errors aGicgi'Pa ndediuwastedivecedsedesusdudothevesabdscbanvnedececispasseeceieea De
« Power Supply 0.2.0... c-ceeceeceaserecesesseerescnenssrcurenceenrnsccurnsscesscusncecrersassenee $4
. Important Precautions! ..............cecceeeeceeeereeereesseserersarrerseersesersssssersarsenres 1B
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Caiculation Examples ............cccccccesececececerscenrentsssseccscensssnssresscesssoseseseesns DOB
SON Mm RON a
1/General Guide
@ Main Key Functions
Brow
Hour/Month Key
10-- WMS
MIR@
© Minute/Date Key
a Time Key *
aren}
Alarm Set Key
~) és
Timer Key
Decimal Point /AM-PM Key
(=) Equals/12-24 Hour Key
HOW@ Arithmetic Keys
(x) Alarm ON/OFF Key
©) Hourly Time Signal ON/OFF Key
© Reset Button (Inside Battery Compartment)
* Other key operations are shown under “Calculation Exampies”.
@ About the Display
The display shows the number you input, calculation results, and various indicators
showing the status of the calculator.
ase yore

® Calculation display
" : 3digit separator. This symbol is also used to indicate minutes in a time display.
"': Seconds indicator (time display)
—: Negative value indicator
M: Independent memory indicator
E: Error indicator
K : Constant calculation indicator
=: Equat indicator
MEE: Arithmetic operation indicators
@ Time displays
hour
seconds
piece
month
day
minutes
hour minute seconds
TIMER:
Indicates
that
the
countdown
timer
is
activated.
{t@¥)
:
Indicates
that
the
calculator
will
beep
at
the
preset
alarm
time.
:
Indicates
that
the
calculator
will
beep
on
the
hour.

—5—
2/Time Functions
Be sure to sat the correct time and daie before using this calculator for the first time.
M@To Set the Current Time and Date
Example: To set 10:25 PM, June 15.
e
1. Press Gwp to display the current time
a)
2. (Cie) 7a ' eae ae a ete dar Md ij
Hold down gg for about two seconds and the (+f a Ge) |i
hands
of
the
analog
timepiece
start
to
flash
on
\
as
A
3
He
4
|
the
display,
indicating
that
you
can
set
the
time
Se
C.J)
sail
and
date.
fats
pesca
nso
orn
ft
a
POOWS
for
CS
Cee
|
A
‘a
-
rin
|
Sg
ae
2
Le
St.
an
eres
|
4
res)
{
,
~
AJ
mean
|
si ee | 2
~
_
the
current
setting
changes
to
the
opposite
one.
ekeeping
format.
«Each time you press G)
*
You
can
also
use
&
to
switch
between
12-hour
and
24-hour
tim
Each
press
changes
to
the
opposite
format.
5. OOD
OOO
00D
8.
Ona
lime
signal
from
a
radio
or
TV,
press
ae
to
start
timekeeping
from
the
time
you
Set.
Wher
you
dc.
the
seconds
count
is
reset
to
00.
<)
Gu)
os §+

=
¢ Even if you plan only to reset the seconds count to 00, be sure to input the hour and
minutes first.
*lf you want to clear your input during the above procedure, press (C).
¢ if you generate an error (“E” indicator) in the above procedure (by inputting 65 for
the minutes, for example), press (C) to clear it.
* To interrupt the time and date setting procedure at any point, press @. .
* Note that the clock is designed to change from February 28 to March 1, without mak-
ing allowance for leap year. Be sure to correct the date during leap years.
*The anaiog timepiece is automatically synchronized with the digital timepiece. You
do not need to make any settings for the analog timepiece.
* You can select whether or not to display a second hand on the analog timepiece.
At any point between steps 2 and 8 in the above procedure, press the 64) key to switch
-between display and non-display of the second hand. ;
@ Automatic Timekeeping Mode Display _ . : 83
If you do not perform any operation on the calculator for about six minutes, it automati-
cally switches to display of the current time. Note that calculation memory contents
are retained when this happens.
analy
arm
and
Hourly
Time
Signal
t
r
sounds
for
about
20
seconds
each
date
at
the
prese
d,
you
can
stop
it
by
pressing
any
key.
With
the
3/Using
the
Al
After
you
set
an
alarm,
a
buzze
time.
Once
the
alarm
starts
to
soun
hourly
time
signal,
the
calculator
beeps
twice
at
the
top
of
each
hour.
Does not
Does
not
Sounds
Hourly
Time
Does
not
Does
not
[sounes
|
sounes
Signal
sound
.
sound
WTo
Set
the
Alarm
Time
Example:
To
set
7:30
AM.
1.
Press
Gam)
to
display
the
current
alarm
setting.

20
Pad x
FE *
io
O08
¢
At
this
time
the
indicator
“AL”
appears
to
indicate
that
an
alarm
time
is
set,
and
the
alarm
is
automatically
switched
on
{indicated
by
tem)
on
the
dispiay.
elf
you
want
to
clear
your
input
during
the
above
procedure,
press
(©).
*
if
you
generate
an
error
(“E”
indicator)
in
the
above
procedure
(by
inputting
65
for
the
minutes,
for
example),
press
(©)
to
clear
it.
Gi
To
Switch
the
Alarm
On
and
Off
While
the
current
alarm
time
setting
is
displayed
(press
Gam),
press
2)
to
switch
the
alarm
on
and
off.
The
alarm
does
not
sound
at
the
preset
time
when
it
is
switched
off.
BE
To
Switch
the
Hourly
Time
Signal
On
and
Off
While
the
current
alarm
time
setting
is
displayed
(press
(am),
press
)
to
switch
the
hourly
time
signal
on
and
off.
The
indicator
“”
appears
to
indicate
that
the
hourly
time
signal
is
set.
MiTo
Test
the
Alarm
While
the
current
alarm
time
setting
is
displayed
(press
Gd),
hold
down
(+)
for
about
two
seconds
to
sound
the
alarm.
Note
elf
more
than
one
alarm
is
set
to
sound
at
the
same
time,
they
sound
in
the
sequence:
timer,
alarm,
hourly
time
signal,
test
alarm.
a. Si 2
Foie pemaangeries rae

a ) on
4/Using
the
Timer
You
can
set
a
countdown
timer
with
a
Starting
time
up
to
99
hours
and
59
minutes.
When
the
countdown
reaches
zero,
an
electronic
buzzer
sounds
for
about
10
seconds.
Mi
To
Set
the
Starting
Time
and
Start
Operation
Example:
To
set
1
hour
30
minutes.
gy
“Cy
Cee
1,
Press
Ge
to
enter
the
Timer
Mode.
“1d
a:
amnnr
“me
anne
200
*
You
can
input
a
value
up
to
99,
An
the
error
by
pressing
(C).
*
If
you
want
to
set
minutes
only,
skip
this
step.
3. OO
y
greater
value
produces
an
error.
You
can
clear
of hours and minutes.
4.
Press
&
to
start
the
countdown
operation.
eal
LILI = RALILIL
*
if
you
want
to
clear
your
input
during
the
above
prricegace,
pene
IG,
ds:
ci
¢To
interrupt
an
ongoing
countdown
operation,
press
().
©
00:00'00".
-
°
i
ae
to
input
only
minutes
in
the
above
procedure
ae
—
ee
eas
nurs
er
ee
pal
cag
a
ie
meting
while
the
timer
he
Timekeeping
Mode
an
:
‘nee
ihe
down),
it
may
affect
the
countdown
operation
by
a
few
seconds.
—12—

= $2 —
MTo Test the Timer Alarm
While
the
current
alarm
time
setting
is di
is displa rT
two
seconds
to
sound
the
timer
ae
ee
a
eer
op
abot
° _5/Correcting Input Errors
*
If
you
input
the
wrong
numb
i
1
er
(or
hour}
when
inputting
value
t
sf
;
ie
acct
press
()
to
clear
the
wrong
input
.
cone
Ou
input
the
wrong
minutes
or
seconds
for
ti
|
or time calculations, re-in
.
ete
Be
sure
to
input
feading
zeros
so
that
ali
input
is
two
digits
eal
you
press
the
wrong
arithmetic
operation
key
(C4)
O,&).8
i
{
correct
key
before
inputting
anything
else.
|
i
ca
@
Clearing
Calculations
*To
clear
the
calculator
com
i
(
pletely
(except
independent
me
*To
clear
the
independent
memory
only,
press
)
twice
epee
MW
Error
Indicator
i:
Th
7
Ly
aegeor
<
e
error
indicator
“E”
appears
on
the
display
whenever
any
of
the
follawing
condi-
°
:
»
Whenever
the
integer
part
(the
value
to
the
left
of
the
decimal
paint)
of
a
calculation’s
intermediate
result
or
final
result
becomes
greater
than
8
digits.
Along
with
the
error
indicator,
an
approximation
of
the
value
appears
on
the
display.
The
following
table
illustrates
the
value
that
appears
when
you
attempt
to
perform
the
calculation:
123,456
x
741,852
=
91,586,080,512
*
Whenever
the
integer
part
of
the
value
stored
in
independent
memory
or
grand
tota!
memory
is
greater
than
8
digits.
At
this
time,
the
display
shows
“0.",
but
the
memory
retains
the
value
it
had
before
the
overflow
occurred.
*
Whenever
an
attempt
is
made
to
perform
division
by
zero
(as
in
6@)0).
¢
Whenever
the
profit
in
a
mark-up
calculation
is
100%,
6/Power Supply
This
unit
is
powered
by
a
single
CR2032
tithium
battery.
Battery
Replacement
H
the
display
becomes
dim
or
if
the
ch
need
to
replace
the
lithium
battery.
ock
is
not
keeping
time
correctly,
you
probably
aren
eemnnell ae iar dees ened

—15—
MTo
Replace
the
Battery
1.
Loosen
the
screw
on
the
back
of
the
unit
and
“remove
the
battery
compartment
cover.
2.
Remove
the old
battery.
3.
Wipe
off
the
surface
of
the
new
battery
with
a
seit
cloth
and
insert
it
into
the
battery
case
_50
that
its
positive
@
side
is
facing
up (s
can see
it).
aie
ai
4.
Press
the
RESET
button
with
a
thi
i
thin,
sities
pointed
5.
Replace
the
battery
compartment
cover
and
secure
it
in
place
with
the
screw,
*
Resetting
the
calculator
automatically
changes
the
current
time
to
12:00
AM
and
clears
the
memory.
;
*
Replace
the
battery
at
least
once
every
five
years,
regardless
of
how
much
you
use
the
cal-
culator
during
that
time.
-
er ante
¢ The battery installed at the factory discharges during shipment and storage. You may
need to replace the original battery sooner than three years after you purchase the
calculator.
important Battery Precautions
Incorrectly using batteries can cause them to burst or leak, possibly damaging the interior
of the unit. Note the following precautions:
¢ Be sure that the positive @ side of the battery is facing up (so you can see it) when
you install it in the calculator.
¢ Never leave a daad battery in the battery compartment. A dead battery can leak and
damage the calculator if lett in the battery compartment for long periods.
e Remove the battery if you do not plan to use the unit for jong periods.
* Never try to recharge the battery supplied with the unit.
e Never expose batteries to direct flame or intense heat.
Keep batteries out of the reach of smail children. If swallowed, consult with a
physician immediately. ,

—17—
prepa
the
RESET
Button
Se
the
RESET
button
located
insid
le th
mamas
Wie
ied
e.
@
battery
compartment
to
reset
the
calculator's
.
ak
you
change
batteries.
*
v¥henever
the
calculator
Operation
be
i
pi
laden
shh
comes
reilly
{which
happens
if
it
is
exposed
Note
that
the
calculator
is
initiali
tial
i
Sees
itialized
as
described
below
whenever
you
perform
the
reset
:
Clock:
AM
12:00
1-1
(January
1)
Analog
Second
Hand:
Not
displayed
Alarm
time:
AM
12-00
’
Alarm:
Off
Hourly
time
signal:
Off’
Timer:
00:00'00"
*
Pressing
the
RESET
button
d
be
picts
eletes
all
memory
contents!
Be
sure
not
to
press
it
un-
important!
*
When
you
press
the
RESET
b
i
é
ress
ulton
with
a
pencil
or
oth
i j
i
er
t
Old
Pressing
it
too
Strongly.
Otherwise
you
might
nee
erciee
.
7/Important Precautions!
* Never allow this calculator to be exposed to direct flame.
* Avoid use and storage under temperatures extremes. Do not place the calculator in
direct sunlight, near windows, near a heater, or anywhere else where it is subjected
to high heat. Heat can lead to discoloration or warping of the case, and can even
damage internal circuitry.
» Under very iow temperatures, display response may slow down or fail entirely. This
condition
is
temporary
and
operation
should
return
under
normal
temperatures.
* Avoid use and storage in areas subject to excessive moisture, dirt, and dust. Direct
contact with liquids and dust can damage internal circuitry.
* Avoid dropping the calculator and otherwise subjecting it to severe impact.
* Never bend or twist the case.
» Never try to take the calculator apart.
* Do not use a pen, pencil, or other sharp object to press keys.
* To clean the exterior of the calculator, wipe it off with a soft cloth dampened in a weak
solution of a mild neutral detergent and water. Be sure to wring out any excess moisture
from
the
cloth
betore
wiping
off
the
calculator.
Never
use
benzene,
thinner,
or
any
other
volatile
agent
to
clean
the
calculator.
Doing
so
can
wipe
off
the
figures
printed
on the case or otherwise damage its finish.
TERN ne try oe

= [:
*
The
contents
of
these
instructions
are
subject
to
change
without
notice.
*
CASIO
Computer
Company,
Ltd.
assumes
no
responsibility
for
any
loss
or
claims
by
third
parties
which
may
arise
from
the
use
of
this
product,
8/Specifications
Model: QA-300
@ Calcutator
Caiculation Functions:
Four
basic
calculations;
constants;
percents:
time
calculations;
abproximations;
other
mixed calculations
Number of Calculation Digits: 8
Memory: 3-key memory system
@ Clock Function
Quartz oscillator frequency: 32,768 Hz
Accuracy:
Within
3
seconds
per
day
(average)
at
norma!
temperature
Basic Functions:
Digital
timekeeping
showing
hour,
minutes,
seconds,
AM/PM,
month,
date
Analog
timekeeping
showing
hour,
minutes,
seconds
ES
aster
Geto
eS
ee
ee
ee)
en:
oe
cco.
|
crs
ns:
20-second
electronic
buzzer
Hourly Time Signal: Sounds every hour, on the hour
j
ns:
: F
ee:
40
ic
buz-
ae
Sieve:
in
1-second
units;
setting
in
1-minute
units,
10-second
electronic
zer;
setting
up
to
99
hours
59
minutes
|
i
i i
:
alarm
test
Raemiié
return
to
display
of
current
time;
42/24-hour
timekeeping
format;
ala
@
General
i
ly:
One
CR2032
lithium
battery
Sanes
Lite
‘approximately
3
years
(one
20-second
buzzer
operation
per
day)
i
:
40°C
(32°F
~
104°F)
Operating
Temperature:
0°C
to
i¢
7 :
aa
29.3(H)
x
128.5(W)
x
128(D)mm
(1
Ne'Hx
5
Wx
5'’D)
Weight:
120g
(4.202)
(including
battery)
ON ecm cee