Citizen SRP-280N Bedienungsanleitung

SRP-280N/SRP-285N

HDBSR285T19 (SR285,A)

2010/04/26 140X75mm

SR285,A COVER front

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File name : CBM_SR285,A_HDBSR285T19_English.doc

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General Guide .................................................3

Turning On And Off.........................................3

Battery Replacement ......................................3

Auto Power-Off Function................................3

Reset Operation..............................................3

Contrast Adjustment.......................................4

Display Readout .............................................4

Before starting calculation ............................. 5

Changing a mode ...........................................5

Selecting an item from display menus...........5

Using " 2nd " Keys .........................................5

Cursor.............................................................5

Making corrections during input....................6

Replay function ..............................................6

Error Position Display Function.....................6

Memory Calculation........................................6

Order Of Operations .......................................7

Accuracy And Capacity ..................................8

Error Conditions........................................... 10

Mode 0 - MAIN ............................................... 11

Arithmetic Calculations................................ 11

Display formats............................................. 11

Parentheses Calculation .............................. 11

Percentage Calculation ................................ 12

Continuous calculation function..................12

Answer Function .......................................... 12

Logarithm And Antilogarithm .......................12

Fraction Calculation ..................................... 12

Angle Unit Conversion .................................13

Trigonometric / Inverse-Tri. Functions.........14

Hyperbolic / Inverse-Hyp. Functions............14

Coordinates Transformation ........................14

Probability ....................................................14

Other Functions ( x–1, √, X, x 2, ^ ) ..........15

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Unit Conversions..........................................15

Physical Constants.......................................15

Mode 1 - STAT................................................16

Single-Variable / Two-Variable Statistics ..... 16

Process capability ........................................17

Probability distribution ................................17

Linear regression .........................................18

Correcting data.............................................18

Mode 2 - Base-n.............................................19

Bases conversions .......................................19

Negative expression.....................................19

Basic arithmetic operations for bases.........20

Logical operation .........................................20

Mode 3 - CPLX ...............................................20

Mode 4 - VLE .................................................20

Mode 5 - QE ...................................................20

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General Guide

Turning On And Off

To turn the calculator on, press [ ON ] ; To turn the calculator off,

press [ 2nd ] [ OFF ].

Battery Replacement

SRP-280N is powered by one alkaline battery (G13/LR44).

SRP-285N is dual power system which is powered by one alkaline

battery (G13/LR44) and a solar cell. If the display becomes dim and

difficult to read (especially when lighting is dim for SRP-285N), the

battery should be replaced as soon as possible.

To replace battery :

1) Remove the screw and the battery compartment cover.

2) Remove the old battery and insert a new one with polarity in

correct directions, then replace the cover.

3) After changing battery, please use a pointed object to press the

reset hole in the rating label area located at the rear of this unit.

Auto Power-Off Function

This calculator automatically turns it off when not operated for

approximately 6~12 minutes. It can be reactivated by pressing [ ON ]

key and the display, memory, settings are retained.

Reset Operation

If the calculator is on but you get unexpected results, press [ 2nd ]

[ RESET ] in sequence. A message appears on the display to

confirm whether you want to reset the calculator and clear memory

contents.

RESET : N Y

Move the cursor to " Y " by [ ], then press [ ] to clear all

variables, programs, pending operations, statistical data, answers,

all previous entries, and memory; To abort the reset operation

without clearing the calculator, please choose " N" .

If the calculator is lock and further key operations becomes

impossible, please use a pointed object to press the reset hole to

release the condition. It will return all settings to default settings.

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Contrast Adjustment

Pressing the [ ] or [ ] following [ MODE ] key can make the

contrast of the screen lighter or darker. Holding either key down will

make the display become respectively lighter or darker.

Display Readout

The display comprises the entry line, the result line, and indicators.

MA IN

74 – 8 / 7

72.85714286



Entry line

Indicator

Result line

Indicator DEG

Entry line The calculator displays an entry of up to 76 digits.

Entries begin on the left ; those with more than 11

digits scroll to the left. Press [ ] and [ ] to move the

cursor through an entry. Press [ 2nd ] [ ] or [ 2nd ]

[ ] to move the cursor immediately to the beginning

or end of the entry.

Result line It displays a result of up to 10 digits, as well as a

decimal, a negative sign, a " x10 " indicator, and a

2-digits positive or negative exponent. Results that

exceed the digit limit are displayed in scientific

notation.

Indicators The following indicators appear on the display to

indicate you the current status of the calculator.

Indicator Meaning

MIndependent memory

–Result is negative

2nd 2nd set of function keys is active.

MODE Mode selection is active

MAIN Main mode is active

STAT Statistics mode is active

Base-n Base-n mode is active

VLE Variable linear equation mode is active

QE Quadratic equation mode is active

CPLX Complex number mode is active

DEGRAD Angle mode : DEGrees, GRADs, or RADs

ENGSCI ENGineering or SCIentific notation

TAB Number of decimal places displayed is fixed

HYP Hyperbolic-trig function will be calculated

BUSY While an operation is executing

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There are digits to the left or right of the display

There are earlier or later results that can be displayed

Before starting calculation

Changing a mode

Pressing [ MODE ] can enter mode menus. You can choose one of

six operating modes, including " 0) MAIN ", " 1)STAT ", " 2)Base-n ",

" 3)CPLX ", " 4)VLE ", " 5)QE ".

Give " 2)Base-n " as an example :

Method 1 : Scroll through the menus using [ ] or [ ] until "

2)Base-n " is shown, then enter the desired mode by

pressing [ ].

Method 2 : Key in directly the number of the mode, [ 2 ] , to enter

the desired mode immediately.

Selecting an item from display menus

Many functions and settings are available on menus. A menu is a list

of options displayed across the entry line.

Give " Pressing [ DRG ] key displays the menu for choosing the

angle setting under MAIN mode " as an example :

Method : Press [ DRG ] to display the menu, and then move the

cursor [ ] or [ ] to an item you want. Press [ ]

while the item is underlined.

For menu items followed by an argument value, you can press

[ ] while the item is underlined or enter directly the

corresponding argument value.

Using " 2nd " Keys

When you press [ 2nd ], the " 2nd " indicator shown in the display is

to tell you that you will be selecting the second function of the next

key you press. If you press [ 2nd ] by mistake, simply press [ 2nd ]

again to remove the " 2nd " indicator.

Cursor

Pressing [ ] or [ ] key can move the cursor to the left or the right.

Hold down any of those keys to move the cursor at high speed.

Pressing [ ] or [ ] can scroll the display up or down while there

are previous entries hidden the display. You can reuse or edit a

previous entry when it is on the entry line.

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Making corrections during input

To delete a character at the cursor, make the character underlined

by using [ ] or [ ] to move the cursor, and then press [ DEL ] to

delete the character.

To replace a character, make the character underlined by using [ ]

or [ ] to move the cursor, and then enter a new entry to replace the

character.

To insert a character, move the cursor to the position of the

character where you want to insert, it will be inserted in the front of

the character after pressing [ 2nd ] [ INS ] and entering a new

character.

(Note) : The blinking cursor " " means the calculator is in insert

mode. On the contrary, the blinking cursor is displayed

as " _" and it means the calculator is in overwrite mode.

To clear all characters, clear all input character by [ CL ] key.

Replay function

zThis function stores the latest operation executed. After execution

is complete, pressing [ ] or [ ] key will display the operation

from the beginning or the end. You can continue moving the

cursor by [ ] or [ ] to edit it. To delete a digit, press [ DEL ]. ( or,

in overwrite mode, just type over the digit). See Example 1.

zThe replay function can keep input digits up to 254 characters.

After execution is complete or during entering, you can press

either [ ] or [ ] to display previous input steps and edit values

or commands for subsequent execution. See Example 2.

(Note) : The replay function isn't cleared even when [ CL ] is

pressed or power is turned off, so contents can be

recalled even after [ CL ] is pressed. However, replay

function is cleared when mode or operation is switched.

Error Position Display Function

zWhen a mathematically illegal calculation is performed, error

position display function will tell you with the cursor where the

error is. Press [ ] or [ ] to move the cursor and then give it a

correct entry. You can also clear an error by pressing [ CL ] and

then re-entered the values and expression from the beginning.

See Example 3.

Memory Calculation

zPress [ M+ ] to add a result to running memory. Press [ 2nd ] [ M– ]

to subtract the value from running memory. To recall the value in

running memory, press [ MRC ]. To clear running memory, press

[ MRC ] twice. See Example 4.

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zThe calculator has ten memory variables for repeated use : A, B,

C, X, Y, M, X1, X2,

PROG1

and

PROG2

. You can store a real

number in variables A, B, C, X, Y, M, X1, X2 and an expression in

PROG1

and

PROG2

. See Example 5.

* [ P/V RCL ] recalls all variables.

* [ SAVE ] lets you store values to variables.

* [ 2nd ] [ RECALL ] recalls the value of variable.

* [ 2nd ] [ CL-VAR ] clears all variables except

PROG1

PROG2

* [ 2nd ] [ CL-PROG ] clears the contents of

PROG1

PROG2

(Note) : Besides pressing [ SAVE ] key to store a value, you can

also assign values to memory variable Mby [ M+ ] or

[ 2nd ] [ M– ]. However, anything currently stored in

variable Mwill be deleted and replaced by the newly

assigned value.

Order Of Operations

Each calculation is performed in the following order of precedence :

1) Expression inside parentheses.

2) Coordinates transformation, and Type B functions which are

required pressing the function key before entering, for example,

sin, cos, tan, sin –1, cos –1, tan –1, sinh, cosh, tanh, sinh –1,

cosh –1, tanh –1, log, ln, 10 X, e X, √, NEG, NOT, X'( ), Y'( )

3) Type A functions which are required entering values before

pressing the function key, for example, x 2, ,!,x–1, %, r,

4) Exponentiation ( ^ ), X

5) Fractions

6) Abbreviated multiplication format in front of variables, π,

RANDM, RANDMI.

7) ( – )

8) Abbreviated multiplication format in the front of Type B

functions, 2 3, Alog2, etc.

9) nPr, nCr

10) x ,

11) +, –

12) AND, NAND

13) OR, XOR, XNOR

14) Conversion( a

b/cd/e, F D, DMS )

• When functions with the same priority are used in series,

execution is performed from right to left.

Xln120 Æe X{ ln (120 ) }

otherwise, execution is from left to right.

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• Compound functions are executed from right to left.

• Anything contained within parentheses receives the

highest priority.

Accuracy And Capacity

Output digits : Up to 10 digits

Calculating digits : Up to 24 digits

In general, every reasonable calculation is displayed up to 10 digits

mantissa, or 10-digits mantissa plus 2-digits exponent up to 10 ± 99.

Numbers used as input must be within the range of the given

function as follow :

Functions Input range

sin x

cos x

tan x

Deg : x <4.5 x 10 10 deg

Rad : x <2.5 x 10 8πrad

Grad : x <5 x 10 10 grad

however, for tan x

Deg : x ≠90 (2n+1)

Rad : x ≠2

π(2n+1)

Grad : x ≠100 (2n+1), (n is an integer)

sin –1 x, cos –1 x x ≤1

tan –1 x x <1 x 10 100

sinh x, cosh x x ≤230.2585092

tanh x x <1 x 10 100

sinh –1 x x <5 x 10 99

cosh –1 x 1 ≤x <5 x 10 99

tanh –1 x x <1

log x, ln x 1 x 10 –99 ≤x <1 x 10 100

10 x–1 x 10 100 <x <100

ex –1 x 10 100 <x ≤230.2585092

x0 ≤x <1 x 10 100

x2 x <1 x 10 50

x -1 x <1 x 10 100, x ≠0

x ! 0 ≤x ≤69, x is an integer.

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P (x, y) 22 y+x <1 x 10 100

R (r, θ) 0 ≤r <1 x 10 100

Deg：│θ│<4.5 x 10 10 deg

Rad：│θ│<2.5 x 10 8πrad

Grad：│θ│<5 x 10 10 grad

however, for tanθ

Deg：│θ│≠90 (2n+1)

Rad：│θ│≠ 2

π(2n+1)

Grad：│θ│≠100 (2n+1), (n is an integer)

DMS │DD│, MM, SS.SS ＜1 x 10 100,

0 ≤MM, SS.SS

x <10 100

x yx >0 : –1 x 10 100 <y log x <100

x = 0 : y >0

x <0 : y = n, 1/(2n+1), n is an integer.

but –1 x 10100 <y log ⏐x⏐<100

y >0 : x ≠0, –1 x 10 100 <x

1 log y

<100

y = 0 : x >0

y <0 : x = 2n+1, 1/n, n is an integer. (n≠0)

but –1 x 10 100 <x

1 log

⏐y⏐<100

nPr, nCr 0 ≤r ≤n, n ≤10 100, n,r are integers.

STAT x <1 x 10 100 , y <1 x 10 100

1–VAR : n ≤40, 2–VAR : n ≤40

FREQ. = n, 0 ≤n <10 100 : n is an integer in

1–VAR mode.

σx,σy,

,y,a, b, r : n≠0 ;

Sx, Sy：n, n≠0, 1

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