The Double Check Talking Commercial Calculator Instructions
Contents
1. 6 T Pl To calculate with the number PI press and hold the square root key 3 row left key 5 3 Conversions Due to the default conversion settings the conversion function enables you to quickly calculate e g how much miles 10 kilometers are Press and hold the conversion key 2 row right key and you will hear the announcement custom conversion By shortly pressing the conversion key again you can now select the measurement unit you would like to work with You can choose between the following units currency from US Dollar to Euro temperature from C to F volume from litre to gallon length from kilometres to miles weight from kilogram to pound and customed conversion for your very own conversion rate To choose for example temperature shortly press the menu key 2 row middle key and DoubleCheck will once again announce the conversion rate You can now type in the number you like to convert e g 30 To convert this number into degree Fahrenheit press both the point key and the equal key 7 row the two middle keys and DoubleCheck will announce degrees Celsius equals 86 degrees Fahrenheit To re convert this result to degree Celsius press both the equal key and the plus key 7 row the two right hand keys 5 3 1 Currency Conversion The default setting of the DoubleCheck provides the conversion from Euro to US Dollar and vice versa If you like to convert other currencies you can2. asks you to type in the percentage Do so and confirm by shortly pressing the menu key again DoubleCheck will repeat the percent and ask you to type in the duration Do so and once again confirm by shortly pressing the menu key DoubleCheck will then announce the net present value 5 4 3 Annuity The term annuity is used in finance theory to refer to any terminating stream of regular payments over a specified period of time Example You obtain a credit from your bank initial capital You pay a certain percentage of interest for this credit percent and you also know that the credit is due within the following 20 years that is 240 months duration 10 After typing in all this information DoubleCheck will calculate the monthly instalments you have to pay in order to repay the credit After selecting the formula DoubleCheck asks you to type in the initial capital Do so and confirm by shortly pressing the menu key 2 row middle key DoubleCheck repeats the value and asks you to type in the percentage Do so and confirm by shortly pressing the menu key again DoubleCheck will repeat the percent and ask you to type in the duration Do so and once again confirm by shortly pressing the menu key DoubleCheck will then announce the regular payment due 5 4 4 Annuity Initial Capital This formula offers you the vice versa calculation that means you can find out which credit amount you could afford Example You know how much money yo
3. each row top down Doute chok Disptay z is Upper Group of Keys 4 fi 3 Lower Group of Keys anon pgg p i d 7 Row 4 1 Upper Group from left to right 1 Row short time short recall memory short switch on delete all long date long save value long delete last digit 2 Row long formula short repeat short adjusted conversion long menu long select conversion 3 Row jshort square short squared short percent root long to the power of long reciprocal value long Pi 4 2 Lower Group from left to right 4 Row digit7 digit 8 digit 9 divided by 5 Row digit 4 digit 5 digit 6 times 6 Row _ digit 1 digit 2 digit 3 minus 7 Row _ digit 0 Decimal point equals plus 4 3 Switch the device on and off To switch the device on quickly press the ON key 1 row right key DoubleCheck will switch off automatically after a certain time without keystroke To switch it off manually press and hold all three keys of the 1 row until you hear a short jingle 4 4 Escape Function To escape the menu quickly press the ON key 1 row right key 4 5 Delete last Digit delete all If you typed in a number incorrectly you can always delete either the last digit or the whole number To delete the last digit only quickly press the ON key 1 row right key To delete the whole number press and hold the ON
4. easily adapt the exchange rate To do so choose the function currency and press and hold the menu key 2 row middle key Type in the exchange rate you need and confirm by shortly pressing the menu key again DoubleCheck will now use this new exchange rate when converting currencies 5 3 2 Custom Conversion If the default settings do not offer the conversion you are looking for you can set your individual conversion rate by choosing the function custom conversion After choosing the function press and hold the menu key 2 row middle key and type in the conversion rate you need Confirm by shortly pressing the middle key You can now calculate with your individual conversion rate 5 4 Formula As a commercial calculator DoubleCheck also offers formulas to calculate compound interest net present value or annuities To activate the formulas press and hold the formula key 2 row left key and select the formula by shortly pressing the right or left key of the same row Confirm your selection by pressing and holding the menu key 2 row middle key 9 5 4 1 Compound Interest This formula helps you to calculate an end capital on the basis of a certain initial capital and a given duration and percentage Example You have a certain amount of money initial capital on your savings account You know that your bank offers you a certain interest rate percent and you decide to keep this amount of money on your account for
5. key 4 6 Keylock To activate or inactivate the keylock function keep the 0 key and the plus key pressed until you hear a short confirmation 7 row extreme left and right keys 4 7 Volume Control There are 6 volume levels to choose from To increase the volume shortly press the menu key 2 row middle key and the right key of the 2 row To decrease the volume press both the menu key and the left key of the 2 row Doublecheck will announce the volume CAUTION The volume level can also be set to 0O Doublecheck will then give no announcements This setting can be reseted by cutting of power supply e g exchange batteries 4 8 Time and Date Doublecheck also offers a built in clock To hear the time quickly press the TIME DATE key 1 row left key It works even if the Doublecheck is turned off To hear the date press and hold the TIME DATE key 4 9 Memory Function 4 9 1 Save Values In order to save numbers in memory choose the function save value press and hold the button in the middle of the first row and select a memory cell from number keys 1 to 9 This way the value is stored in the appropriate location there are up to 9 different memory locations 6 4 9 2 Select stored Values Use the function recall memory short press on middle button of the first row and then press the corresponding number key to select the value from a memory location 1 to 9 4 9 3 Delete store
6. page 13 9 Cleaning the Device page 13 10 Technical Data page 13 11 Guarantee and Service page 14 12 Disposal page 15 12 1 Disposal of Electronic Devices page 15 12 2 Battery Disposal page 15 13 Symbols used page 15 14 Manufacturer page 16 1 Introduction DoubleCheck our commercial calculator with integrated speech output not only provides the standard arithmetic functions but also combines numerous other functions in one small and handy device CONSULT INSTRUCTIONS BEFORE USE Do not operate DoubleCheck without reading the instruction manual Get A N acquainted with the device and all the accessories Keep the instruction for reference reading and pass it on with the device 2 Description of the Device The case is long and flat with a shape similar to a remote control On the surface are various keys as well as the noticeable flat display Put the device in front of you so that the end with the display is furtherest away from you Upper Side All the keys can be found on the upper side They are subdivided into 2 groups The first group nearest to you consists of 4 rows each including 4 small square keys The second group consists of 3 rows each including 3 bigger rectangular keys Left Side On the left side of the device you can find the socket for an optional power supply not included Right Side On the right side of the device there are two outlets The one farther away is a service ou
7. which could be confusing The default setting is always the highest possible 10 To change this value select the menu function as described above and set the preferred number by shortly pressing the left or right key of the 2 row the higher the number the more detailed the announcement Confirm the setting by shortly pressing the menu key again 7 6 Decimal Places DoubleCheck offers the possibility to set the decimal places That means the user can decide how many units should be announced after the comma The default setting is always the highest possible 9 units after the comma To change this value select the menu function as described above and set the preferred number by shortly pressing the left or right key of the 2 row the 12 higher the number the more units after the comma Confirm the setting by shortly pressing the menu key again 8 Safety Instructions Do not expose the device to extreme humidity heat cold dust or dirt When exposed to splash water wipe the device off If water enters the device remove the batteries and make sure the device is dry When not using the device for a longer period remove the batteries so they can not damage the device by leaking Make sure the batteries are inserted in the correct way 9 Cleaning the Device To clean the device use a lightly moistened cloth only CAUTION No liquid should enter the device Avoid strong acid or scrubbing cleansers Do not s
8. crub the surface with AN rough sponges as they could damage the case of the device 10 Technical Data Dimensions Length 150 mm 5 91 inches Width 60 mm 2 36 inches Height 12 to 20 mm 0 47 to 0 78 inches Weight 130 g 0 29 pounds including batteries Power Supply 2 x 1 5 V AAA micro batteries optional power supply not included in delivery Included in Delivery DoubleCheck talking calculator 2 x 1 5V AAA Micro batteries printed user s manual optional power supply unit Warranty 2 years 11 Guarantee and Service From date of purchase we issue the following term of guarantee twenty four 24 months on the device itself twelve 12 months on accessories e g power supply units earphones etc six 6 months on wearing parts e g rechargeable batteries hand cuffs battery lids etc no guarantee on external data mediums e g CDs memory cards etc and batteries Under this guarantee CareTec shall repair a unit that is found to be defective free of charge or at its option replace it by a reconditioned one In no event shall Caretec be liable for indirect special or consequential damages The exposure of the device to liquids strong electromagnetic fields moisture and heat as well as a dropping of the device or an opening of the case itself causes a loss of guarantee In case of problems please contact Caretec or your local distributor before re
9. d Values In order to delete a stored value you need to type in O and save this value see 4 9 1 To write any new value in memory just save the value to the appropriate memory location By cutting of power supply e g exchange batteries all memory locations will be reseted to 0 4 10 Repeat Function By pressing the menu key shortly middle key in the second row the entire entry can be announced even before the operation is finished 5 Arithmetic Procedures DoubleCheck offers all standard arithmetic functions as well as the possibility to calculate percentages extract square roots or square a given number 5 1 Standard Arithmetic Functions The standard arithmetic functions include to add to sub duct to multiply and to divide To conduct one of those standard functions just type in the number followed by the function rows 4 to 7 the right keys and the second number To finish the arithmetic procedure press the equal key 7 row second key from the right Every key you enter as well as the result of the calculation are announced in a clear voice To repeat the result of the calculation press the equal key once again If you accidentally type in a wrong number just press and hold the ON key 1 row right key to delete the last value This is the way you can delete a whole operation step by step backwards 5 2 Advanced Arithmetic Functions DoubleCheck also offers the possibility to calculate perc
10. e g 5 years duration After typing in all this information DoubleCheck will announce how much money you will have on your savings account after those 5 years including the interest given by your bank After selecting the formula DoubleCheck asks you to type in the initial capital Do so and confirm by shortly pressing the menu key 2 row middle key DoubleCheck repeats the value and asks you to type in the percentage Do so and confirm by shortly pressing the menu key again DoubleCheck will repeat the percent and ask you to type in the duration Do so and once again confirm by shortly pressing the menu key DoubleCheck will then announce the end capital 5 4 2 Net Present Value This formula helps you to calculate the initial capital on the basis of a certain end capital you wish to have in the near future including the interest Example You know you need a certain amount of money in the near future end capital and you know that your bank offers you a certain interest rate percent You decide you can keep money on your savings account for e g 5 years duration After typing in all this information DoubleCheck will calculate the net present value that is the amount of money you have to invest in order to reach said end capital After selecting the formula DoubleCheck asks you to type in the end capital you wish to reach Do so and confirm by shortly pressing the menu key 2 row middle key DoubleCheck repeats the value and
11. entages extract square roots or square a given number 5 2 1 Percentages When calculating percentages the following approaches are most common Calculation Example Input Percent How much is 5 of 250 250 x5 Percentage 250 is 5 of how much 250 5 surcharges _ How much is 250 plus a surcharge of 5 250 5 Rebate How much is 250 minus a rebate of 5 250 5 To calculate for example how much are 5 of 250 type in 250 shortly press the multiplication key 5 row right key followed by the digit 5 Finish the process by shortly pressing the percent key 3 row right key DoubleCheck will then announce the result 5 2 2 Square a given number To square a given number type in the value and shortly press the square key 3 row middle key followed by the equals key 5 2 3 Extract a Square Root To extract a square root type in the number and shortly press the square root key 3 row left key followed by the equals key 5 2 4 Reciprocal Value To calculate the reciprocal value type in a number and press and hold the percent key 3 row right key followed by the equals key 5 2 5 To the Power of Type in a number press and hold the square key 3 row middle key until you hear to the power of Now type in the number needed only integers and finish the calculation by shortly pressing the equal key 7 row second key from the right DoubleCheck will then announce the result 5 2
12. ide whether DoubleCheck should announce the result as an entire number e g Threehundredfive or in individual units e g Three Zero Five Press and hold the menu key to select the menu function Choose the announcement format entire number or individual units and confirm by shortly pressing the menu key again 7 2 Alarm DoubleCheck offers one alarm and up to 10 different jingles To set the alarm select the menu function as described above Realize the necessary settings hour minutes and jingle by shortly pressing the left or right key of the 2 row and confirm each setting by shortly pressing the menu key again 7 3 Time To set the correct time select the menu function as described above Realize the necessary settings hour and minutes by shortly pressing the left or right key of the 2 row and confirm each setting by shortly pressing the menu key again 7 4 Date To set the correct date select the menu function as described above Realize the necessary settings year month day by shortly pressing the left or right key of the 2 row and confirm each setting by shortly pressing the menu key again 7 5 Rounding DoubleCheck offers you the possibility to round a number up or down This could be quite handy if you are working with high values e g in the millions as DoubleCheck will then automatically round the value and not announce the entire numbers to the last digit
13. oy tec Users Manual DoubleCheck Talking Commercial Calculator Table of Contents 3 2 3 4 Introduction Description of the Device Power Supply Keyboard Layout 4 9 4 9 4 9 4 9 4 10 Upper Group from left to right Lower Group from left to right Switch the device on and off Escape Function Delete last Digit delete all Keylock Volume Control Time and Date Memory Function 1 Save Values 2 Select stored Values 3 Delete stored Values Repeat Function 5 Arithmetic Procedures 5 1 5 2 5 2 5 2 5 2 5 2 5 2 5 2 5 3 5 3 5 3 5 4 5 4 5 4 5 4 5 4 Standard Arithmetic Functions Advanced Arithmetic Functions 1 Percentages 2 Square a given number 3 Extract a Square Root 4 Reciprocal Value 5 To the Power of 6 TI Pl Conversions 1 Currency Conversion 2 Custom Conversion Formula 1 Compound Interest 2 Net Present Value 3 Annuity 4 Annuity Initial Capital 6 Help Mode 7 Menu Number Announcement Format Alarm Time Date Rounding Decimal Places page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page 10 page 10 page 10 page 11 page 11 page 11 page 12 page 12 page 12 page 12 page 12 page 12 ODDOADAW ADA ADADAWAAONNNNNDODODOOADNOAATHA HWW 8 Safety Instructions
14. tlet for our technicians The one nearer to you is an earphone socket earphones are also optional and not included Bottom Side On the bottom side of the device you will find four little rubber feet the loudspeaker grill and the battery compartment 3 Power Supply Batteries DoubleCheck operates with 2 x 1 5V AAA batteries The battery compartment is situated on the bottom side of the device To insert the batteries turn over the device with the display end still furtherest away from you Right between the two upper rubber feet you can feel a little notch This is where you can open the battery compartment Please note that the lid is not completely removable Put two 1 5V AAA batteries in the compartment with the flat negative end of each battery contacting the coil Close the lid until it locks in place Power Supply DoubleCheck can also be operated with a power supply unit The power supply unit is not included in the delivery and has to be ordered separately The socket for the power supply unit is located on the left side of the device CAUTION Replace the batteries as soon as the device announces battery weak 4 Keyboard Layout The keyboard is subdivided into 2 groups the lower group consists of 4 rows each including 4 small square keys The upper group consists of 3 rows each including 3 bigger rectangular keys Each key of the upper group operates two functions In the following we will describe
15. turning the device without any apparent reason We will then inform you about the necessary procedures The device may only be opened by authorized technicians Caretec reserves the right to make changes and improvements to its products without further notice 12 Disposal 12 1 Disposal of Electronic Devices pzd This product must be disposed of separately from household waste at specially designated collection and recycling points 12 2 Battery Disposal K Please dispose used batteries only at specially designated collection points never through regular house garbage Pb Cd Hg This sign can be found on batteries containing pollutant substances such as Pb lead Cd Cadmium Hg mercury 13 Symbols used Caution Additional information Must be disposed off separately from household waste O D Manufactured by 14 Manufacturer ks CareTec International GmbH Stubenbastei 1 A 1010 Wien Austria is the manufacturer of this product Phone 43 1 513 80 81 0 Fax 43 1 513 80 81 9 E mail office caretec at Web www caretec at DoubleCheck v3 01 2011CE
16. u could afford each month to pay instalments annuity You know the conditions of your bank that is the interst rate percent as well as the time duration After typing in all this information DoubleCheck will calculate the credit you could afford to pay back with the amount monthly available After selecting the formula DoubleCheck asks you to type in the annuity Do so and confirm by shortly pressing the menu key 2 row middle key DoubleCheck repeats the value and asks you to type in the percentage Do so and confirm by shortly pressing the menu key again DoubleCheck will repeat the percent and ask you to type in the duration Do so and once again confirm by shortly pressing the menu key DoubleCheck will then announce the initial capital possible 6 Help Mode Pressing the keys F and Conv at the same time leads you into the Help mode Here you are given a short note about the function of the key you are pressing By Pressing F and Conv again you may leave the help mode 7 Menu Here you can set date time and an alarm as well as the number announcement format or the decimal places To enter the menu press and hold the menu key 2 row middle key until you hear the announcement dezimal place You can now browse through the menu by shortly pressing the right or left key of the same row To choose one of the menu functions press and hold the menu key again 7 1 Number Announcement Format This setting enables you to dec
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