DoubleCheck XL - Sight and Sound Technology
Contents
1. alarm and confirm this you will automatically exit the Menu Following the activation you have to set the other items hour minutes and jingle and confirm each setting individually When completed you will hear the full settings 7 3 Time To set the correct time select the menu function Time Change the settings hour and minutes individually with a short press of the FIN or CONV key 3 x 3 group row 2 left or right key and confirm each setting by a short press of the Menu key again 7 4 Date To set the correct date select the menu function Date Change the settings Day month and year individually with a short press of the FIN or CONV key 3 x 3 group row 2 left or right key and confirm each setting by a short press of the Menu key again 7 5 Rounding DoubleCheck XL offers you the possibility to round a number This can be helpful when using big values e g in the millions as DoubleCheck XL will then automatically round the value and not announce the entire numbers to the last digit The default setting is always the highest possible 10 To change this value select the menu function and set the preferred number by using the FIN or CONV key 3 x 3 group row 2 left or right key Confirm the setting by pressing the Menu key again 7 6 Decimal Places DoubleCheck XL offers the possibility to set the decimal places announced after the comma The default setting is always the highest possible 9 units after the2. press FIN key 3 x 3 group row 2 left key and select the formula by a short presses of either the right or left key of the same row Confirm your selection with a long press of the Menu key 3 x 3 group row 2 middle key 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 e g 5 years duration After typing in all this information DoubleCheck XL 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 XL asks you to type in the initial capital Do so and confirm with a short press of the Menu key 3 x 3 group row 2 middle key DoubleCheck XL repeats the value and asks you to type in the percentage Do so and confirm again with a short press of the Menu key DoubleCheck XL will repeat the percent and ask you to type the duration Do so once again and confirm with a short press of the Menu key DoubleCheck XL then will announce the end capital 11 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 includi
3. short press of the Menu key 3 x 3 group row 2 middle key DoubleCheck XL repeats the value and asks you to type in the percentage Input this and confirm again with a short press of the Menu key DoubleCheck XL will repeat the percent and ask you to type in the duration Do so once again and confirm with a short press of the Menu key DoubleCheck XL 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 you could afford each month to pay installments annuity You know the conditions of your bank that is the interest rate percent as well as the time duration After typing in all this information DoubleCheck XL will calculate the credit you could afford to pay back with the amount monthly available 12 After selecting the function DoubleCheck XL asks you to type in the annuity Do so and confirm with a short press of the Menu key 3 x 3 group row 2 middle key DoubleCheck XL repeats the value and asks you to type in the percentage Input this and confirm again with a short press of the Menu key DoubleCheck XL will repeat the percentage and ask you to type in the duration Do so once more and confirm with a short press of the Menu key DoubleCheck XL then will announce the initial capital 6 Help Mode Pressing the keys FIN and CONV 8 x 3 group row 2 left a
4. DoubleCheck XL 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 equals key 4 x 4 group row 4 columns 2 and 3 and DoubleCheck XL will announce degrees 10 Celsius equals 86 degrees Fahrenheit To re convert this result to degree Celsius press both the equals key and the plus key 4 x 4 group row 4 columns 3 and 4 5 3 1 Currency Conversion The default exchange rate Euro to US Dollar is set to 1 873 but you can easily change this To do so choose the function currency and press the Menu key 3 x 3 group row 2 middle key long Type in the exchange rate you need and confirm by shortly pressing the Menu key again DoubleCheck XL 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 When the function is selected press the Menu key 3 x 3 group row 2 middle key long and type in the conversion rate you need Confirm by a short press of the Menu key You can now calculate with your individual conversion rate 5 4 Commercial Calculator As a commercial calculator DoubleCheck XL also offers formulas to calculate compound interest net present value or annuities To activate the formulas
5. comma To change this value select the menu function and set the preferred number by using the FIN or CONV key 3 x 3 group row 2 left or right key Confirm the setting by 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 scrub the surface with rough sponges as they could damage the case of the device 10 Technical Data Dimensions Length 210 mm 8 3 inches Width 170 mm 6 7 inches Height 45 mm 1 8 inches Weight 487 g 1 07 pounds including batteries Power Supply 4x 1 5 V AA batteries optional power supply not included in delivery Included in Delivery DoubleCheck XL 4 x 1 5V AA 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 o
6. e 12 page 12 page 13 page 13 page 13 page 13 O O O OOo OWA OAWAOAONNNNNNNOTOAA HA 7 3 Time 7 4 Date 7 5 Rounding 7 6 Decimal Places 8 Safety Instructions 9 Cleaning the Device 10 Technical Data 11 Guarantee and Service 12 Disposal 12 1 Disposal of Electronic Devices 12 2 Battery Disposal 13 Manufacturer page 14 page 14 page 14 page 14 page 14 page 15 page 15 page 15 page 16 page 16 page 16 page 16 1 Introduction DoubleCheck XL is a commercial calculator with extra large buttons and a huge display with big digits as well With the backlit display and the speech output as optional functions DoubleCheck XL is especially suitable for visually impaired and blind people 1 1 Quick Overview on the Functions of DoubleCheck XL Spoken functions with natural voice Extra large display with 10 digits of 2 5 cm 1 in height Extra large buttons size 1 5 x 1 5 cm 0 6 x 0 6 in 10 memory spaces Reciprocal value Percentages Square raise to higher power and extract roots Calculation of compound interest cash values and annuities Conversion of currency and physical units Date and time with alarm clock function Volume control in 6 steps 1 2 XL Product Series XL calculators are available in the following versions Non talking Non talking with backlit display Talking Talking and with backlit display Please note that for non talking and or backlit display ve
7. e ON key 3 x 3 group top right 4 6 Delete last Digit delete all If you have mistyped a number incorrectly you can always delete the last digit or the complete number Press the ON key short and the complete number will be deleted press the On key long and only the last digit will be deleted 4 7 Keylock To activate or de activate the keylock keep the O key and the PLUS key pressed until you hear a the confirmation 4 x 4 group row 4 left amp right key 4 8 Volume Control The volume can be set in 7 levels Only on talking versions including level 0 mute To increase the volume press the auxiliary key in row 2 to decrease press the auxiliary key in row 3 Another way of changing the volume is by pressing the MENU key 3 x 3 group row 2 column2 short together with either the button left of the menu key decrease volume or with the button right of the menu key increase volume DoubleCheck XL will announce the change of the volume Caution The volume level can also be set to 0 DoubleCheck XL then be silent The settings will change when power is removed 4 9 Time and Date DoubleCheck XL offers a built in clock The time is announced when the TIME DATE key 3 x 3 group row 1 left key is pressed To hear the date press the TIME DATE key long The Time and Date are also announced in standby mode without having to press the ON key prior to that 4 10 Memory Function 4 10 1 Save Values Value
8. ess the Equals key 4 x 4 group row 4 column 3 The Equals key has a short tactile line Every value every result is announced by the speechoutput To repeat the result of the last calculation press the Equals key once again If you accidentally type in a wrong digit just press ON key long 3 x 3 group row 1 right key to delete the last value 5 2 Advanced Arithmetic Functions DoubleCheck XL also offers the possibility to calculate percentages 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 x 5 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 250 shortly press the multiplication key 4 x 4 group row 2 right key followed by the digit 5 Finish the process by shortly pressing the percent key 3 x 3 group row 3 right key DoubleCheck XL will then announce the result 9 5 2 2 Square a Given Number To square a given number type in the value and shortly press the squared key 3 x 3 group row 3 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 x 3 group row 3 lef
9. g containing mercury 13 Manufacturer CareTec International GmbH Stubenbastei 1 A 1010 Wien Austria Phone 43 1 513 80 81 0 Fax 43 1 513 80 81 9 E mail office CareTec at Web www CareTec at DoubleCheck XL 12 2011 CE
10. ies DoubleCheck XL operates with 4 1 5 Volt AA batteries The battery compartment is situated on the bottom side of the device To insert the batteries turn over the device with the high position end showing to the right side In the middle of the bottom side you can feel a little notch This is where you can open the battery compartment Please note that the lid opens to the right and is not completely removable Put the 4 batteries in the compartment with the flat negative end of each battery contacting the spring Close the lid until it locks in place Caution Replace the batteries as soon as the device announces battery weak Power Supply DoubleCheck XL 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 next to the display it s the front outlet on the right side of the device 5 4 Keyboard Layout The keyboard is divided into 3 groups To the left there are 4 round keys which we call auxiliary keys In the middle next to the auxiliary keys is the 3 x 3 group which consists of 3 row and 3 columns The middle key of this group is the Menu key which has tactile dots To the right is the 4 x 4 group with 4 rows and 4 columns The Equal key row 4 column 3 has a little tactile line In the following we describe each row top down and group to group f
11. n 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 returning 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 15 12 Disposal 12 1 Disposal of Electronic Devices X This product must be disposed of separately from household waste at specially designated collection and recycling points 12 2 Battery Disposal pz Please dispose used batteries only at specially designated collection points never through regular house garbage Pb Cd Hg These signs can be found on contaminant laden batteries Pb containing lead Cd containing cadmium H
12. nd right key at the same time activates the help mode Pressing each key gives you a short information about this By pressing FIN and CONV again you leave the help mode On Versions without backlit display the Help can be activated with the Light key auxiliary key row 1 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 the Menu key 3 x 3 group row 2 middle key long until you hear the announcement of a menu function You can now browse forward through the menu with a short press of the CONV key backwards with FIN Key A short press on the Menu key will give you the status of the selected function With one short press of the CONV Key you will come to the first function the Number Announcement Format 7 1 Number Announcement Format The results can be announced as an entire number e g Threehundredfive or in individual units e g Three Zero Five Select the function with a long press of the Menu key Choose the announcement format entire number or individual units with the FIN or CONV key and confirm by pressing the menu key again 7 2 Alarm DoubleCheck XL offers one alarm with up to 10 different jingles To set the alarm select the function as described above First you can activate or deactivate the alarm which you have to confirm with a short press on the MENU key If you deactivate the
13. ng the interest Example You know you will 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 for a certain duration for e g 5 years After typing in all this information DoubleCheck XL will calculate the net present value This is the amount of money you have to invest in order to reach the desired end capital After selecting the function DoubleCheck XL asks you to type in the end capital you wish to reach Do so and confirm with a short press of the Menu key 3 x 3 group row 2 middle key DoubleCheck XL repeats the value and asks you to type in the percentage Key this in and confirm again with a short press of the Menu key DoubleCheck XL will repeat the percentage and ask you to type in the duration Key this in and once again confirm with a short press of the Menu key DoubleCheck XL will 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 need a credit from your bank initial capital where you pay a percentage of interest percent over a certain fe 20 years or 240 months time duration DoubleCheck XL will calculate the monthly installments you have to pay in order to repay the credit After selecting the function DoubleCheck XL asks you to type in the initial capital Key this in and confirm with a
14. oF fec User Manual DoubleCheck XL Commercial Calculator for Visually Impaired People Table of Contents 1 Introduction 1 Quick Overview on the Functions of DoubleCheck XL 1 2 XL Product Series 2 Description and Scope of Delivery 3 Power Supply 4 Keyboard Layout 4 1 The 4 Auxiliary Keys 4 2 3x 3 Group from left to right 4 3 4 x 4 Group from left to right 4 4 Switch the Device on and off 4 5 Menu Escape Function 4 6 Delete last Digit delete all 4 7 Keylock 4 8 Volume Control 4 9 Time and Date 4 10 Memory Function 4 10 1 Save Values 4 10 2 Select Stored Values 4 10 3 Delete Stored Values 4 11 Repeat Function 4 12 Backlit Display option 5 Arithmetic Procedures 1 Standard Arithmetic Functions 5 2 Advanced Arithmetic Functions 5 2 1 Percentages 5 2 2 Square a Given Number 5 2 3 Extract a Square Root 5 2 4 Reciprocal Value 5 2 5 To the Power of 5 2 6 TI Pi 5 2 7 Change Sign 5 3 Conversions 5 3 1 Currency Conversion 5 3 2 Custom Conversion 5 4 Commercial Calculator 5 4 1 Compound Interest 5 4 2 Net Present Value 5 4 3 Annuity 5 4 4 Annuity Initial Capital 6 Help Mode 7 Menu 1 Number Announcement Format 7 2 Alarm 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 10 page 10 page 10 page 10 page 11 page 11 page 11 page 11 page 12 pag
15. rom left to right DEG 23456 7890 CareTec Double Che k XL t e 3x3 group yyeen ronan 4 auxiliary keys 4 x 4 group 4 1 The 4 Auxiliary Keys row 1 Turn Light on off Version with backlit display Help mode on off Version without backlit display row 2 Increase volume row 3 Decrease volume row 4 Repeat input 4 2 3 x 3 Group from left to right row 1 short time short recall memory short on delete long date long save value long delete last digit row 2 short recall formula short repeat short recall conversion long select formula _ long menu long select conversion row 3 short square root short squared short percent long Pi long to the power of long reciprocal value 4 3 4 x 4 Group from left to right row 1 digit 7 digit 8 digit 9 divided by row 2 digit 4 digit 5 digit 6 times row 3 digit 1 digit 2 digit 3 minus row 4 digit 0 short decimal point equals plus long change sign 4 4 Switch the Device on and off To switch the device on press the ON key 3 x 3 group top right The DoubleCheck XL will automatically switch off after 3 minutes without a keystroke To switch it off manually press and hold all 3 keys of the first row in the 3 x 3 group until you hear a short jingle 4 5 Menu Escape Function To escape the menu just press th
16. rsions not all keys functions are available Consult instructions before use Do not operate DoubleCheck XL without reading the instruction manual A N Get acquainted with the device and all the accessories Keep the instruction for reference reading and pass it on with the device 2 Description and Scope of Delivery Included in the delivery are the commercial calculator DoubleCheck XL a set of batteries 4 x 1 5 V AA and a printed user manual A power supply unit and earphones can be ordered optionally Place the device on the 4 rubber bumpers with the keys in front of you and the big display which you can feel behind it Top All the keys can be found on the upper side They can be divided into 3 groups The first group on the left consists of 4 round keys The second group left from the middle consists of 3 rows and 3 columns of big square keys The third group to the right consists of 4 rows and 4 columns Right side On the right side of the device there are three outlets The one nearest to you is an earphone socket earphones are optional and not included Next to the display are the other two outlets with the socket for an additional power supply optional not included is furthest away The other one is a service outlet for our technicians Bottom side On the bottom side of the device you will find 4 rubber bumpers the loudspeaker grill and the battery compartment 3 Power Supply Batter
17. s can be saved in the memory by a long press of the RCL STO key 3 x 3 group first row middle key and a press of a number from 1 to 9 The value is then saved in the chosen slot a letter M is shown on the display 4 10 2 Select Stored Values A short press of the RCL STO key and a press of a number from 1 to 9 will recall the memory which was saved in this slot 4 10 3 Delete Stored Values In order to delete a stored value you save the value 0 on this slot The letter M will disappear from the display Gi Note The memory will be reset when power is removed 4 11 Repeat Function By pressing the Repeat key Auxiliary key row 4 or by pressing the Menu key short 3 x 3 group row 2 column 2 the entire entry will be repeated even before the operation is finished 4 12 Backlit Display option The light on the backlit version can be turned on or off by pressing the Light key Auxiliary key in row 1 5 Arithmetic Procedures DoubleCheck XL 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 subtract to multiply and to divide To accomplish one of those standard functions just type in the number followed by the function 4 x 4 group the right column row 1 to 4 and the second number To finish the arithmetic procedure pr
18. t 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 x 3 group row 3 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 x 3 group row 3 middle key until you hear to the power of Now type in the number needed and finish the calculation by shortly pressing the equals key 4 x 4 group row 4 column 3 5 2 6 TI Pi To calculate with the number Pi press and hold the square root key 3 x 3 group row 3 left key 5 2 7 Change Sign Press and hold the decimal point key 4 x 4 group row 4 column 2 to change the sign of the value 5 3 Conversions The conversion function enables you to quickly calculate many different conversions e g how many miles 10 kilometers are Press the conversion key 3 x 3 group row 2 right key long and you hear the announcement of the conversion which was the last active choice 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 liters to gallon length from kilometers to miles weight from kilogram to pound and customed conversion for your very own conversion rate To choose e g temperature press the Menu key 3 x 3 group row 2 middle and
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