Datexx ECO-CALC DS-700 Owner'S Manual Download

Page: 16 / 18

ELECTRONICS

Amplifier Gain

Calculate the value of Av

Voltage gain AV = 20 log Vo/ Vi

= 20 log 3

1x10

-3

=69.54242509dB

In another right triangle,

A = 6 feet and C = 15 degrees.

Determine the value of a, b and B.

sin a = A /C

sin a = 6 / 15 = 0.4

sin-1 .4 = 23.58

a = 23.58 degrees

b = 90 - 23.58 = 66.42 degrees

cos a = B / C

cos 23.58 = B /15

B = cos 23.58 x 15

B = .92 x 15 = 13.75 feet

Display

Angular
Mode

DEG

0
6

0.4

23.57817848

M 32.57817848
M 66.42182152

0.916502421
13.74753633

0 [X->M]
6 [

]

15 [=]
[2ndF] [sin ]
[M+]
90 [–] [RM] [=]
0 [X->M]
23.58 [cos]
[X] 15 [=]

Press

–1

Display

1.–03

3.477121225
69.54242509

3 [

] [EXP] 3 [+/– ]

[=] [log] [X]
20 [=]

Press

Summary of Contents for ECO-CALC DS-700

Page 1: ...Owner s Manual SCIENTIFIC CALCULATOR DS 700 Please read before operating the unit ...

Page 2: ...m Number Generator Built in Trigonometric and Algebraic Functions TABLE OF CONTENTS LCD Liquid Crystal Display Format 4 Display Symbols 4 Setting Display Format 7 Operating the Calculator 9 One Factor Operations 21 Two Factor Operations 21 Correcting Incorrect Entries 22 Correcting Overflow Errors 23 Scientific Notation 25 Percentage 26 Logarithm and Exponential 26 Trigonometric Calculations 27 Ap...

Page 3: ...GRAD Grad mode symbol Appears when grad mode is designat ed or shows that the angular mode of the converted result is in grads Parenthesis symbols Appears when a calculation with parenthesis is performed by pressing the parenthesis key LCD LIQUID CRYSTAL DISPLAY FORMAT FLOATING POINT DISPLAY SCIENTIFIC NOTATION DISPLAY DISPLAY SYMBOLS Negative symbol Indicates the displayed number is a negative nu...

Page 4: ...T Octal mode symbol Appears when the octal mode is set or the displayed result is an octal num ber HEX Hexadecimal mode symbol Appears when the hexadecimal mode is set or the displayed result is a hexa decimal number CPLX Complex number mode symbol Appears when the complex number mode is set STAT Statistical mode symbol Appears when the statistical calcula tions mode is set A calculated result is ...

Page 5: ...omatically turns off 8 min utes after last keypress to con serve battery power Power on and clear statisti cal calculation mode key Press to turn on the calculator or to clear the display Press to activate statistical program The display is cleared and STAT appears in the display In this mode the x m RM and M keys func tion as the n x S and DATA keys respectively Press 2ndF to activate the x x2 Ó ...

Page 6: ... number of deci mal tab places in the dis played result Degree Radian Grad selector angular unit con version key Use to calculate trigonometric and coordinate conversion The DRG key changes the angular mode with each press DEG RAD GRAD DEG DEG MODE Entries and results are in decimal degrees RAD MODE Entries and results are in radians GRAD MODE Entries and results are in grads Functions the same as...

Page 7: ...ex numbers are entered and when calling the real parts of calculated results Clear Entry Factorial key Press to clear the display of an incorrect number Calculates the factorial of the displayed number Degree Minutes Second ƒ Decimal degrees conversion Hexadecimal number key Converts degree minute second to decimal degree Press 2ndF first to convert decimal degree to degree minute second Hexadecim...

Page 8: ...dinate conver sions when entering the x coor dinate of the rectangular coordi nate X Y or the r of the polar coordinate Also displays the calculated values of X or r Press to convert polar coordi nates to rectangular coordinates Imaginary number enter coordinate conversion key Press to input the imaginary parts of complex numbers or to display the imaginary parts of a calculat ed result During coo...

Page 9: ... it displays the number of the samples entered n Press to obtain the sum of the data x Calculates the Xth root of Y Square root cube root and hexadecimal number key Calculates the square root of the displayed number Hexadecimal number B key HEX mode only Calculates the cube root of the displayed number Square reciprocal key Calculates the square of the displayed number Calculates the reciprocal of...

Page 10: ...culation key Displays the contents of the mem ory In statistical mode press to obtain the standard the deviation of the data simple Press to obtain the standard deviation of the population of data Number keys Press to enter number 0 9 Division binary number key Press for division Press to convert the displayed number to a binary number base 2 Multiplication Octal num ber key Press for multiplicati...

Page 11: ...ample 7 x 5 35 Enter 7 x 5 35 is diplayed Two factor functions can be chained together but algebraic hierarchy is always in effect To perform a calculation of a lesser Memory plus DATA CD key Press to add the displayed num ber to the contents of the Memory To subtract the displayed number from the memory press the key first In statistical mode press to enter data In statistical mode press to delet...

Page 12: ...alculation to get an accurate result Example 10 5 3 5 Incorrect 10 5 3 11 6667 Correct 10 5 15 3 5 With this method calculations can be performed in the proper order CORRECTING INCORRECT ENTRIES If you press the wrong function key x or just press the correct function after pressing the wrong one The calculator preforms the last function pressed Example If you press the 5 x 5 the displayed result w...

Page 13: ...n and number entered are retained as a constant Examples To calculate 7 5 5 5 22 Press 7 5 22 In this case and 5 are the con stants To calculate 2 3 5 and 4 3 7 Press 2 3 5 5 4 7 In this case and 3 are the con stants When calculating powers 5 2 25 and 4 2 16 Press 5 yx 2 25 4 16 In this case yx 2 is the constant 24 25 Display To Calculate 72 5 x 10 1 75 x 10 4 7 x 10 1 57978 x 10 7 25 21 7 425 21 ...

Page 14: ... 6 2ndF Press 65 15 74 75 74 75 65 15 2ndF 129 95 10 116 955 116 955 129 95 10 2ndF Display To Calculate log 0 02 1 69897 1 698970004 0 02 log Press In 50 3 2 8134107 2 813410717 50 3 In 7 2 82475x10 282475249 7 y 10 10 8 56 2 236854 56 5 2 236853829 56 y 3 5 2ndF 1 x 5 x Display Angular Mode GRAD 6 666667 0 5 2ndF cos Press 1 Display Angular Mode RAD 0 62831853 0 726542528 2ndF π 5 tan Press Disp...

Page 15: ...t sec2 Velocity V Vo gl 75 32 2 x 16 23 48 ft sec Height S Vol 1 2 gl2 75 x1 6 1 2 x 32 2 x 1 6 2 78 784 ft Display 23 48 75 32 2 X 1 6 Press 0 5 78 784 75 X 1 6 2 2ndF 1 x X 32 2 X 1 6 X 2 CIVIL ENGINEERING Trigonometric Functions In this right triangle A 5 7 feet and a 30 degrees Determine the value of C sin a A C sin 30 degrees 5 7 C C 5 7 sin 30 degrees C 5 7 5 C 11 4 Display 1 503630259 1503 ...

Page 16: ...lue of a b and B sin a A C sin a 6 15 0 4 sin 1 4 23 58 a 23 58 degrees b 90 23 58 66 42 degrees cos a B C cos 23 58 B 15 B cos 23 58 x 15 B 92 x 15 13 75 feet Display Angular Mode DEG 0 6 0 4 23 57817848 M 32 57817848 M 66 42182152 0 0 916502421 13 74753633 0 X M 6 15 2ndF sin M 90 RM 0 X M 23 58 cos X 15 Press 1 30 31 Display 1 03 3 477121225 69 54242509 3 EXP 3 log X 20 Press ...

Page 17: ...2 Follow the correct polarity when installing the batteries Reversed batter ies can cause damage to the calculator 3 If the calculator is not going to be used for a long period of time remove the bat teries to prevent the damage or injury from possible battery leakage PARALLEL RESISTANCE Three resistors are connected in par allel Their values are 540 ohms 470 ohms and 680 ohms Calculate the total ...

Page 18: ...s subjected to misuse accidental damage or repair by other than TELEDEX In no event shall TELEDEX be liable for consequential econom ic damage or damage to property Except as provided herein DATEXX makes no express warranties and any implied warranties are limited in dura tion to the written limited warranties contained herein Some states do not permit limitation or exclusion of implied warranties...

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