POSline TPL7000 инструкция обслуживания

USER’S MANU AL FOR TPL700 0 POR T ABLE LASER DA T A TERMIN AL[...]

Contents P AR T I Laser Safety Important Notice FCC Notice EMC Safety Preface Contents of the Product Package Precautions Preparation The First-step of the Operation of the TPL7000 T ermina l Featur es 1. Hardware Features 2. Firmware Feature s 3. Development Software Features 4. Cradle Features How to Communicate via the IrDA Specifications 1. CPU[...]

P AR T II 1. T wo Ini tial Screens 1.1.Power-of f Screen 1.2. Power-on Screen 2. Basic Operations and Settings of the TPL7000 Quic k Set-up Remote Connection with the Host Computer Reset TPL7000 Set always scan 3. Display of the System Menu, Item Selection and Low Power The System Menu Display How to Select an Item Low Power W a rning 4. Run T ask [...]

Setting Field Prompting Set ting Fiel d Format Storing Format Prompting Cha racters Formatti ng All Fields Setting the Delay T ime Setting the T ime Stamp Delete Data Delete T ask 6. Setup Setup Menu Basic Setup Back Light &. LCD Beep V olume Power-up Scan System Setup 6.3.1. Communicati on Communicati on Parame ter Online Upload 6.3.2. System [...]

The Protocol Communi cation Protocol Control Code Cont rol Codes for Da ta T ransmission Handshake Control Code 1 byte unsigned character Communicati on Sequence Appendix 1. The Data Stor age Format 2. Specifications of the TPL7000 Database 3. Applications of the Files in the TPL7000 Database[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 6 P AR T I LASER SAFETY The TPL7000 lase r scanner complies with safety standard IEC 825-1(1993) for a Class 2 laser product. It also compl ies with U.S . 21CFR1040 as applicable to a Class IIa laser product. A void sta ring at direct laser light lest the laser beam hurts your eyes. IMP[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 7 POSLINE is a registered trademark of POSLINE, S. A. DE C. V. All rights reserved, reproduction of this document or any portion of its contents is not allowed without the specific written consent of POSLINE, S. A. DE C. V. Every effort is made to ensure the accuracy of our product info[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 8 " How t o Iden tify and Resolve Radio-T V Inte rfer ence Pr obl ems ". This bookle t is available from the U.S. Governmen t Printing Of fice, W ashington, DC 20402, S toc k No. 004000003454. EMC Safety According to EN 50081-1(1992) :EN 55022/EN61000-3-2 EN 50082-1(1992) :IEC[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 9 Contents of the Pr oduct Package Each pac kage of product may include: 1. The TPL7000 Portable Data T e rminal. 2. A power adapter 3. A cradle for communication and battery recharg e 4. A set of Lithium ion rechargeable battery 5. A cl ip and a tab 6. TPL7000 User ’ s Manual Please [...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 10 Pr ecautions 1. Be careful with your TPL7000 . A void dropping or ba nging it. 2. Kee p the TPL7000 from dampness, water , corrosive liquids, etc. 3. Do not operate the TPL7000 unde r extreme temperatures. Refer to the Specifications for the temperature limitations. 4. Use only the s[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 1 1 Pr eparation 1. Mount the Battery in the TPL7000 T e rminal T ake the TPL7000 Portable Data T erminal out from the box; place the accompanying battery in the battery compartment as shown in fig 1: a. Press the catch, slide the back cover , and lift it in the sequence. b. Place the b[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 12 d. Batter y char ging and data exchange can be done at the same time or respectively . Th e TPL7000 Laser Da ta T erminal, however , is unable to communicat e with the host computer when placed on the cradle without the battery attached to it. e. The battery is always charged v ia th[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 13 Note 2: How to remove the battery a. T urn t he power off . b. Remove the back cover in a sequence similar to Fig 1. c. Press the battery against the TPL7000 , and lift it up and away from the compartment, as Fig 4 shows. d. Place the cover back in place. 3. Mounting the tab a. Remov[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 14 How to S ta rt the Op eration of the TPL7000 T erminal? T ake out the terminal, install in a set of fully char ged battery . a. Press the “ Power” key . A fter the display appears, press “ M2 ” key to enter the System Menu. b. Then Press “ 1 ” to enter the “ Run T ask ?[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 15 2. Firm ware features a. Supports most of the popular barcode symbols. b. Ability to discriminate among barcodes c. Programmable auto-power-of f time d. The uploading or downloading can be f ully cont rolled by the computer . e. Easy user-defined FREET ASK , able to assign as many as[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 16 Note: There a re 2 LEDs and 2 hole s at the f ront bottom of the CRD-20 as shown in Fig 6. The 2 LEDs are located on the left and rig ht, whereas the two hole s in the middle, each conta ining an IrDA element. The LED on the left is illuminated when power is on, and will not be illum[...]

User ’ s Manual for TPL7000 Series P ortabl e Data T erminal 17 How to Comm unicate via the Ir DA 1. Aim the red IR elements a t the top of the TPL7000 directly at those in the cradle. 2. Make s ure that the TPL7000 IR function has been activated. 3 . Make sure the distan ce between t he cradle and the terminal is within 1.5m. Specification CPU/M[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 18 PIN-OUT CONFIGURA TION PIN-O UT CONFIGURA TION DB-9(F) 1. CD (Carrier dete ct) 2. TxD(T ransmit data) 3. RxD (Receive data) 4. DSR(Data set ready) 5. GND(sSinga l ground) 6. DTR(Da ta terminal ready ) 7. CTS(Clear to send) 8. R TS(Request to send) 9. RI(Ring indica tor) DC JACK INNE [...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 19 Part II 1. T wo Initial Scr eens 1.1. Power -off Screen W ith a TPL7000 in hand, you will find its screen exactly as that shown above with no message on i t before you turn it on, . W e now define this screen the “ Power -off Scr een ”. After power-on , t he following scree n wil[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 20 When the " Power -on screen " is displayed, press M2 to ent er the " Syst em Menu screen " . 1.2. The Power -on Screen Press and hold on the red PW key on t he bottom of the keypad to turn the TPL7000 on. The terminal will emit a “beep”. Notes: a. The “ TPL7[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 21 2. Basic Op erations and Setting s of the TPL7000 When the “ Power -on Screen ” is displayed, pressing M 2 will lead it to the “ System M enu Screen ” as shown below . From this screen, t he user can select all functions the TPL7000 provides. All the Select Sequences begin fr[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 22 Set Date Mode 3 2 3 3 T o set Da te Format: mm/dd/YY ; dd/mm/YY ; mm/dd/yyyy; dd/mm /y yyy Basic Barcode 3 3 1 T o set Basic Ba rcode decoder parame ter Advanced Barcod e 3 3 2 T o set Advanced Barcode decoder parameter Get Barcode T ype 3 3 3 T o dec ide if the Ba rcode T ype ID wi [...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 23 d. T o e n ter the “ Multi Dro p Mode ”, press M1 and then F3 . T o go back to the “Power-on Screen”, press M1 . 2.2. Remote Connection with the Hos t Com puter When the terminal is on the cradle, and the Power -on Scre en is displayed, a command can be issued (by the user) f[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 24 2.4 S et Always Scan Before system fi nishes resetting, press " F5" + "F6" together until resetting i s finished. The "Set always sca n" screen is di splayed for a bout 3 sec onds (see the figure below), then TPL7000 is set to the “Always Scan Mode”.[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 25 3.2. How to Sel ect an Item The method mentioned above for selecting an item appl ies to all menus. A c ursor will a ppear in each menu di splay . Generally speaking, to e nter an item: a. Press the numerical key corresponding to the item; or b. Press < or > to move the c ursor[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 26 < RUN TASK > < RUN TASK > < RUN TASK > < RUN TASK > 1 . Free Task 2.Down load 1 3.Down l oad 2 M2=sel,ENT=Next < RUN TASK > < RUN TASK > < RUN TASK > < RUN TASK > 4 .Down load 3 5.Down load 4 6.Down l oad 5 M2=sel,ENT=Next < RUN TASK[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 27 b. Line s 4 and 5 c ontain key prompting message: press M1 to e xit the Free T ask ; press F6 to enter the editing m ode; press F3 to insert a blank character; and press F4 to delete a character . c. Error message: A data verification func tion can be s et by the user while setting t[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 28 Rec Rec Rec Rec 2 2 2 2 Field 1 Field 1 Field 1 Field 1 ▊ M1:Exit F6:Edit F3:Ins. F4:Del. d. Usual ly , it takes less than 3 seconds for a barcode to be scanned and its data to be decoded. For the protection of the laser e ngine built in the TPL7000 , any such procedure t hat has r[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 29 examp le, if the data is “1234567,” and you want to insert a blank between “3” and “4”, move the cursor to “4”, and press F3 . d. If you want to delete “4,” move the cursor to “4,” and press F4 . e. T o c hange a character , move the cursor to the character to[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 30 e. T o a lternate between the upper case and the lower one of an English letter , press F1 . For example, when “ A” appears, pressing F1 will change it into “ a”, and vice versa. 4.4.4. Inputting Special Symbols T o input special symbols, pres s F2 . The f ollowing screen wil[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 31 Chec king and Correcting the Inpu t Fie ld Data 4.5.1. Checking the Data When running t he Free T ask , press F6 to ente r the editing mode. The following s creen (which is defined “ Data Checking Screen ”) will be displayed: Rec Rec Rec Rec 4 4 4 4 Field 1 Field 1 Field 1 Field [...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 26 displa yed in line 2 w ill c hange, ref lecting the movement of the “invisible cursor”. For example, if there a re 5 records in the Free T ask , and eac h rec ord has 2 fields, the <TOP OF FILE> will be displayed when “ Rec 1 F ield 1” is displayed on line 1 . Pressing [...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 27 Rec Rec Rec Rec 4 4 4 4 Field 1 Field 1 Field 1 Field 1 1 234567890 M1:Exit F3:Ins. F4:Del. Line 1 : the current record a nd field numbers Lines 2 & 3: prov ide a 32-by te zone where data is compose d or edit ed. a. Data can only be modified via the keypad. Refer to the above par[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 28 Screen ” is displayed to return to the “ Data Input Mode ” as shown below , ready for data to be input. F6 M1 Rec 1 Field 1 ▊ M1:Exi t F6 : Edit F3: Ins. F4 : Del. Rec 1 Field 1 <CURRENT RE C.> ← F6: Help Data Inputting Mode Data Checking Mode[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 29 4.6. E rror Messages: 4.6.1. Length Error The TPL7000 will automatically check the data length when the data is input. Any discrepancy between the input length and the preset value ( or default value) will cause the terminal to give a beep, prompting that an error has occurred. In th[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 30 5. T ask Utility 5.1. T ask Utility Menu The T ask Utility is used to manage the Free T a sk’ s database of the TPL7000 It provides t he following functions : < Task Utility > < Task Utility > < Task Utility > < Task Utility > 1.Statu 2.Format 3.Delete Data [...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 31 < Data Format > < Data Format > < Data Format > < Data Format > Data Exist Check ONLY or M1 to exit Data exists. Press M1 to return to T ask Utility or press any key to check the storage format. < Data Fo < Data Fo < Data Fo < Data Fo rmat > rma[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 32 5.3.2 . Selecting the Inputting Device The user uses this s creen to specify how he is to input the da ta for a (number of) f ield: by scanning or by keying in, or both. Press < or > to select, and press E nter to confirm. Input Device Input Device Input Device Input Device Key[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 33 5.3.4 . Setting Field Prompting This screen i s dis played f or an accompanying prompting of a certain field to be input, such as “MA TERIAL” or “ ITEM”, etc.. Such promptings will remind the user what the data to be input relates to. The message on line 3 indicates t hat the[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 34 Note: a . The V erification C haracter Promptings-“ndaulcp*” on the 4 th l ine prompt s how many kinds of character you c an use, and what t hey are. For example, if the data you are going to input in a certain field c ontains 5 alphabetical characters, of which the first one is [...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 35 5.3.6 . S toring Data V eri fication Prom pting Characters This screen is used to specify if the above-mentioned “format symbols” should be stored as a part of the da ta to be input in the field. For example, “123199” input as a “date” wil l be displayed as 12/31/99 if yo[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 36 Delay(1/1000sec) Delay(1/1000se c) Delay(1/1000sec) Delay(1/1000sec) 0 Maximum=32767 ENT to Confirm Line 2 : where the “length of time” is input Line 3 : maximum range of time Line 5: key prompting b. When you have ente red the screen mentione d in 4.3. , a nd hold on the SCAN ke[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 37 5.3.9. S etting T ime S tamp This is to set up a “T ime Stamp Field” and its format to record and display the time when a record takes place. Time Stamp Time Stamp Time Stamp Time Stamp None <>=Select,M1= Esc ENT to Confirm Line 2: None , Short or Long Lines 4 and 5: key pr[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 38 Form 1. 21770606302000133553 Form 2. 21770606301353 c. The messag e in t he 1 st form includes the data (217706), the month (06), the date (30), the year (2000), the hour (13 or 1 PM), the minute (35), and the second (53). 5.4. Delete Data Select 3. “Delete Data ” under the “ T[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 39 5.5. Delete T ask Select 4. “ Delete T ask ” under t he “ T ask Utility ” mode . The following screen will be displayed. < Delete task > < Delete task > < De lete task > < Delete task > (Y/N)?N M2 to Select ENT to Confirm Line 2: the enquiry Lines 4 an[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 40 6. S etup 6.1. Setup MENU The Setu p Menu , whic h inc ludes 4 setup items, is used to s et up parameters for the TPL7000 . < Setup MENU > 1.Basic Setup 2.System Setup 3.Barcode Setup M1=esc,M2=select 6.2. Basic Setup When 1. Bas ic Setup is selected, the fol lowing scree n wil[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 41 b. Whene ver the “LCD Contrast” i s selected, the value on line 2 always remains “50”. c. T o select a status other than t he default setting “50”, press either < or > . d. Pressing either of the said two keys and holding it on will make the status change continuous[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 42 6.2.3. Power -up Scan When 3. “ Power up Scan ” is selected, the following sc reen will be displayed. T wo options are available: “ Enable ” and “ Disable ”. If choose "E nable", every tim es the TPL7000 is turned off ei ther under the “ Free T ask ” mode or[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 43 6.3 S ystem Setup Press M1 to g o bac k to the “ Setup M enu ”, a nd select 2. “ System Setup ”, the following screen will be displayed. < System Setup > 1.Communication 2.System Timer 3.ID/PW/DateMode M1=esc,M2=select 6.3.1. Communication When 1 . “ Commun icat ion ?[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 44 Baud Rate 9600 <>=Select,M1=Esc ENT=Set Line 2 : the default setting. Lines 4 and 5 : the key promptings. c. There are 5 Parity Check options available: none, even, odd, mark , and space . The default setting is none . Parity Check none <>=Select,M1=Esc ENT=Set Line 2 : t[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 45 f. Pres s M 2 or Enter to confirm the set value after it is setup. The TPL7000 will automatically e nter the next setting mode. g. Pressing M 1 during any s etting procedure will bring the procedure to a halt, and ret urn to t he screen shown on 6.3.1. 6.3.1.2. Onl ine Upload Online [...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 46 Send Delimiter None <>=Select,M1=Esc ENT=Set Line 2 : the default setting. Lines 4 and 5 : the key promptings. d. After the delimiter characte r is set, the following screen will be displayed to indicate that the TPL7000 is ready for the above-mentioned operation t o begin. The[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 47 a. When this mode is selected, the cursor a ppears on the 2 nd line. Input the correct “date” as per the format prov ided on line 4. T o confirm the input, press Enter . T o go back to the original setting, press M1 . b. After “date” is set, the following display appears for [...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 48 6.3.3 .1. Device ID Setup a. Select 1. Device ID , t he following screen will be displayed. Press Enter , and reset the Device ID . Device ID: 11111111 Press Enter key To change Line 2 : the current Device ID b. If a password has b een setup and input, th e following screen will be d[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 49 6.3.3. 2. Password Setup a. Select 2. Password , the following screen will be displayed, requesting the original password to be input, if a password has been s etup with the TPL7000 . Such a request wil l not be made if there has been no password at all. Input Password Enter to Confi[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 50 NO CHANGE! USE ORIGINAL Password !! 2 2222222 e. If t he password is c hang ed, the following screen will be displayed: Re-Confirm Password : Enter to Confirm Re-input a password, and pre ss Enter to confi rm. f. When a password is rec onfirmed to be correct, the following screen wil[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 51 h. Afte r the p assword is s et, the f ollowing scree n will b e displayed, providing 2 options: “ Enable ” and “ Disabl e”. The barcode da ta will be displa yed if “ Enable ” i s selec ted, and would not if “ Dis able ” is selecte d. The default setting is “ Enable[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 52 6.4. B arcode Setup When 3. Barcode Setup is selected from the “ Setup MENU ”, the following screen will be displayed: < Barcode Setup> 1.Basic Set 2.Advance Set 3.Pre/Postamble M1=esc,M2=select There a re a lot of barcodes available f or differ ent applications. With some [...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 53 Ital ian Pharmac On, Off Off Basic Setup Pharmac. Add ' A' No Add, Add No Add Ba sic Setup c. Full ASC II Code 39 Parameters Options Default Rem arks F ASCII Code 39 On, Off Off Basic Setup d. Codeb ar Parameters Options Default Rem arks Codabar On, Of f O n Basic Setup Cod[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 54 CPC 25 Length Minimum, Maximum 1 to 64 10 t o 12 Advance Setup i. IA T A Code Parameters Options Default Remarks IA T A Code On, Off Off Advance Setup 6.4.2. Basic Barcode Setup Enter 1. B asic Set screen and further e nter the EAN/UPC screen, which is displayed on the left. Line 2 s[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 55 to go b ack to the Barcode Setu p screen. 6.4.3. Advanced Barcode Setup a. Select 2. “ Advance Set ” to enter CPC 25 . Set up a ll parameters in a manner similar to that mentioned in 6.4.2. b. Advanced barcode setups involve 6 barcode symbologi es including: 1. CPC 25 , 2. EAN to[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 56 follow ing screen will come up first: Get Barcode Type Enable <>=Select,M1=esc ENT=Set Line 2 : the default setting. Lines 4 and 5 : the key promptings. c. Afte r the B arcode T ype is setup, press Enter to s hift to the next screen: <Pre/Postamble> Pre: □□□□□?[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 57 7. Upload Upload MENU The TPL7000 is built with an uploading f unction, that al lows col lected raw data to be sent out via its RS232 series port without the nee d of any computer software. Note: Y ou c an receive data, however , by us ing a ny PC host computer with standard T ermina[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 58 Upload Data Select 1. Upload Data , the following screen will be displayed: < Upload data > FREETASK(Y/N)?Y M2 to Select ENT to Confirm Line 2 shows the file name and enquiry a. The name of the f ile (in t his case, Free T ask ) will be displayed on line 2. Also, the user is re[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 59 Deli miter Setup From the Upload Menu , select 2. Delimiter Set to setup t he delimiter characters between fields a nd be tween records a s well as to s elect whether the header i s goi ng to be uploaded. 7.4.1 . Setting up the Field Delimiter Select 2. Delimiter Set from the “ Upl[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 60 a. Ther e are 4 record delimiters available: None , CRLF , CR , and LF . b. Press Enter to confirm the setup a nd moves forward to the Upload Header screen, or press M1 to go back to the Upload MENU if you want to cancel the setup. 7.4.3. The Upload Header Setup Upload Header Off <[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 61 follow . Protocol Off <>=Select,M1=Esc ENT=Set Line 2 : the default setting. Lines 4 and 5 : key promptings. d. T o choose to use the Protocol or not, press < or > to set the Protocol On or Off. e. Press Enter to confirm the setup, or press M1 to go back to the Upload MEN[...]

User ’ s Manual for TPL7000 Series P ortable Data T ermi nal 62 b. Before sending out the file, the TPL7000 would send ENQ . c. Upon receipt of ENQ , the host can send back ACK to acknowledge acceptance of the ENQ ; or it can send back NAK to reject the file to be sent by the TPL7000 . 7.5.5. 1 byte unsigned character a. BCC is the sum of the byt[...]

User ’ s Manual for TPL7000 Series P ortabl e Data T erminal 63 Appendix—the TPL7000 ’ s Database 1. The Data S torage F ormat The TPL7000 keeps the data it ha s co ll ec ted. The da ta, w hich is store d in a simple f orm of database and presente d as records, is composed of visible ASCII char ac ters . Every r ec ord contains all it s field[...]