User`s Manual
Contents
1. Computer Function Bar Code Command Description Command Gees MM N Scans INN mo 11111111 veceszor s INIA N3 an LUE m2 11111111 M eese MMMM 7 coe 3 IATA T exero UL m6 A MAMMA MW mee 208 DAMM CONTINUED ON NEXT PAGE Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 12 Setting Prefixes Identifying the Symbology continued Computer Function par Cone Command Description command START END Z7 Programming Menu LIT III gt code ss HAN A us cose 125 L D8 IATA HARE NO MSI Plessey LUAM Il Display Prefix Suffix MET LITE hexidecimal format 13 Setting Suffixes Identifying the Symbology Computer Function Bar Code Command Description Command D seen MN 1 oeansumes ANIMA N6 UPC A I Il Il o0 LL o1 LL NB cas PANA COINTINUED ON NEXT PAGE Page 35 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 13 Setting Suffixes Identifying the Symbology continued Computer Function Bar Code Command Description Command Z7 START END Programming Menu Ill liil Il Ill 02 esses N N9 EAN 8 LARA II Il 03 seo AAN 04 coe A 05 een MMIII 06 A MMM IMM 07 D IL os coe HERI 0s Co2. 11 Tips for Verifying the Presence of a Bar Code 12 Section 4 Configuring the Scanner eere 13 Programming Menus amp Commandis eee 13 Default Settings 5 5 ni roland 13 Section 5 Application Engineering Support 15 Technical Assistance and Support 15 Common Causes of Poor Performance 15 Modified and or Customized Scanners 15 Section 6 Scanner Servicing and Maintenance 17 Appendix A Programming Menus amp Commands 19 Appendix B Dimensional Drawings eeeerrnree nne 57 Appendix C Optical Performance Charts 59 Organization of this Manual This manual provides the necessary instructions for installing and using an Opticon LHA7126 LHA7127 Fixed Position Scanner The manual is organized as follows Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Appendices Introduction and Getting Started Describes the general operation of a LHA7126 LHA7127 scanner Also provides a Quick Start Up Procedure that allows you to begin using the scanner immediately Technical Specifications Provides complete specifications including mechanical details optical performance RS232 communications and other technical data Positioning the Scanner for Optimal Performance Provides detailed instructions and tips for mounting and pos
3. Computer Function Bar Code Command Description Command START END 27 Programming Menu Ill Ill ll Ill D2 Do not calculate check digit 1111 Ill Il Ill D3 Calculate check digit CPN Form Serial D4 Calculate check digit Form Serial Calculate check digit All data Il Il os reswa NADA D7 Do not transmit check digit NT Ill Ill The IATA code is a variable length symbology with an optional check digit and non printable start stop characters The following characters are supported Digits O up to 9 The checksum is calculated as the modulo seven of the data string IATA is an acronym for International Air Transport Association String format CPN AC FC SN CD z Airline Form Serial Check Meaning of Acronym Coupon Code Code Number Digit Number of digits 15 total 1 3 2 8 1 Enable check digit check Selection of the check digit calculation Disable transmission of the check digit Check digit calculation If the check digit calculation is required then the appropriate calculation method must be selected Page 31 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 10 Fixing the Number of Digits Computer Function Bar Code Command Description Command START END Z7 Programming Menu INN IN Enable fixation NW e AAN Enable fixation 7w a AAN H0 sable Mation A Disable
4. 700d OK 93 5 CODE 39 TEST The number in the upper left indicates the number of times the decoder ran while scanning at 700 scans per second The number can be lower than 700 when reading noisy barcodes The upper right percentage indicates the ratio of the number of successful reads to the total number of attempts By positioning the scanner at the optimal distance from the barcode with the correct orientation and with a grade A quality barcode readings of 9596 or higher are expected Reset the scanner after testing Page 10 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Application Notes Tips for Achieving High Throughput In some applications your primary objective may be to achieve the highest possible throughput rate The following list identifies the parameters and scanner settings that can maximize scanning and decode throughput speed Note by emphasizing maximum throughput other areas of performance may be affected For example the number of non reads could increase If high throughput is critical consider some or all of these settings Operate in the Trigger Disabled mode Operation of the trigger can require as much as 200 msec before decoding begins slowing down throughput rate Only enable those symbologies that you will be decoding Eliminate all suffixes and prefixes Minimize the number of redundant reads required before transmitting data Transmit
5. Trigger Function Disabled Multiple Read After receiving a trigger pulse scanner will read multiple different bar codes in succession until it times out Scanner will read different bar codes in succession if they are presented to the read window Scanner will not read the same bar code twice if they are consecutive Scanner will not read the same bar code twice if they are consecutive Continuous Read Scanner will read the same bar code continuously after receiving a trigger pulse until scanner times out Scanner will read the same bar code continuously Single Read Scanner will read only one bar code after receiving a trigger pulse Same as Multiple Read mode above Page 49 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 25 Scanner Timeout Trigger Enabled Mode only These commands which are only applicable in the Trigger Enabled mode establish the time out period after the trigger pulse is received The Time out period is the same whether the scanner is operating in Single Multiple or Continuous Read mode Computer Function Bar Code Command Description Command START END 27 Programming Menu NAN I Trigger remains ON ME CMM LL hardware trigger only GEN LLL LL EN LM LL EE Y3 semis IM v4 ss IM vs sseosatertsseing Ulli ve sseonsatertsseing IM Y7 10 Seconds after tri
6. Il Ill 72 Save all values set by command not lost upon power off 73 Display software settings and version number Display prefix suffix value length za eses PAD hexadecimal format the scanner Note Scanner default settings are indicated by a pointing hand X symbol throughout the menus to follow Use Z2 Save all values set by command after computer command to store settings in memory prior to power off U4 Command U4 The U4 command resets all parameters for an established set of defaults defined as follows Discriminates the following symbologies WPC UPC EAN JAN I 2 of 5 NW 7 Codabar Code 39 Code 128 Code 93 MSI Plessey and IATA No fixed number of digits defined 32 digits maximum Normal scan Multiple read Low or high analog gain Small and large No verification no Bad Read BR Buzzer 3KHz and 2KHz volume maximum Buzzer after decoding 200 ms Good LED after decoding green 200 ms RS232C 9600 bps 8 1 np no handshaking LED ON Trigger disabled Page 21 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Scanner Test Mode UO This mode resets all unit parameters to a predefined set of defaults for the purpose of putting the scanner into a test mode which reads barcodes continuously The predefined defaults are the following 999999 Reads all barcodes by symbology No
7. feature allows the host to verify that the correct amount of data was received Computer Function Bar Code Command Description Command A MDM 28 wcasaoss NM 3D LL 3x en LD oF MAMMA CONTINUED ON NEXT PAGE Page 39 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 17 Enable Number of Characters Digits Transmitted continued Page 40 27 ne 3G EAN 8 XAO AA 3H GANS 42 or 5 ALT A AL 31 code 39 EN 3 Codabar NW 7 LEN 3K induta 2of 5 BEL 3L iteeaves2o65 TETIT 3M Code 93 HARE 3N Code 128 BUE 30 MSTJPlessey HERE k m HERE x IN all symbologies Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 18 Disable Number of Characters Digits Transmitted Computer Function Bar Code Command Description Command ED coms MAMI 28 wcaszores MIN 20 weeescs MIN 2 cae LULL gt F sos NIMM 2 esses LIMIT a coe 3 LUT 2 exe NDA x 111111111 a mee MIA 2M code s3 PORN CONTINUED ON NEXT PAGE Page 41 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 18 Disable Number of Characters Digits Transmitted continued Computer Function Bar Code Command Descript
8. fixed number of digits defined 32 digits minimum Normal scan continuous scan Large only No verification no Bad Read BR Buzzer 3KHz volume maximum Buzzer after decoding 10 ms Good LED after decoding green 100 ms RS232C 9600 bps 8 1 np no handshaking Straight Across Scan Mode U3 This mode resets all unit parameters to a predefined defaults for the purpose of allowing straight across scanning of up to 4 labels The predefined defaults are the following Reads all barcodes by symbology No fixed number of digits defined 32 digits max Normal scan multiple scan Trigger disable Small and large No verification no Bad Read BR Buzzer 3KHz and 2KHz volume max Buzzer after decoding 200 ms Good LED after decoding green 200 ms RS232C 9600 bps 8 1 np no handshaking Read Rate Mode U8 This mode resets all unit parameters to a predefined set of defaults for the purpose of checking the scanner read rate When activated the test result is sent via RS232C and indicates the ration of the number of successful read to the total number of attempts The test result is reported in the following format 700 d OK 93 5 CODE 39 TEST Where The predefined defaults are the following 700d indicates the number of times the Reads all barcodes by symbology decoder ran while scanning at 700 scans per No fixed number of digits defined 32 digits second the num
9. minimize communication errors Enable the Number of Characters Transmitted The scanner will calculate and transmit a number indicating the total number of characters it is transmitting Your host application program can compare this number with the actual number of characters received to verify that the correct amount of data is received Page 11 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Tips for Verifying the Presence of a Bar Code If the scanner is operated in the trigger enabled mode and the trigger is activated one of three conditions may occur A bar code is scanned and decoded Decoded data is transmitted A bar code is scanned but is not decoded No data is transmitted e g print quality was poor No bar code is present No data is transmitted In some applications when no data is transmitted it may be important to know why Wasthere a bar code present that could not be decoded or was no bar code present at all This requirement is common in applications such as automated blood analysis equipment Test tubes containing blood samples from many different people are loaded into a rack for automatic analysis The bar code on each tube ties that sample and the results back to a specific individual If no bar code data is transmitted it is critical to understand the reason Your Opticon scanner when operated in the Trigger Enabled mode can be programmed
10. read Transmit lt STX gt gt lt ETX gt 56 for bad read AMI AU lt STX gt lt ETX gt for no read SH Transmit gt lt CR gt for bad read Transmit CR for no read 5 Transmit CAN CR for bad read or no read 5 Transmit lt STX gt CAN lt ETX gt for bad read or no read 28 Print Quality Adjustments Computer Function Bar Code Command Description Command START END 27 Programming Menu UA IN For lower density poor print x4 quality bar code e g dot matrix Il I Ill Ill with voids low analog gain For high density good print X5 quality bar code without voids 111 II Ill high analog gain X6 Output data obtained from Low or High analog gain X7 Output data obtained from Low and High analog gain Page 52 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 29 LED Operation Computer Function Bar Code Command Description Command START END Z7 Programming Menu MULTI AI T4 Good read LED disabled after decode T8 Good read LED ON after decode for 10 seconds T5 Good read LED ON after decode for 20 seconds T6 Good read LED ON after decode for 40 seconds T7 Good read LED ON after decode for 80 seconds LED ON Red vo LED ON Red vi LED ON Green ve ese MAMMA M LED ON Green vo eese DAN Page 53 Manual No 25 ULHAR101 01 February 2
11. to transmit an error message which indicates whether or not a bar code was present The following table shows the message that will be transmitted for each condition Presence Absence of bar code Scanner Transmits Bar code was present and correctly decoded Decoded Data No bar code was present lt STX gt lt ETX gt Bar code was present but could not be decoded STX gt lt ETX gt Page 12 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Section 4 Configuring the Scanner Since the operation of a LHA7126 LHA7127 scanner is microprocessor controlled it is possible to modify or program its operation to match your specific application Changes in parameter settings can be changed or programmed in two ways 1 The first method employs specially designed programming bar codes which instruct the scanner to modify specific parameters 2 The scanner can also be programmed by sending software instructions from the host PC to the scanner via the RS232 connection Programming Menus amp Commands Appendix A contains full instructions on how to configure the scanner as well as a complete listing of the computer commands and programming bar codes that are available to customize the scanner for your application Default Settings When you modify or change any parameters the scanner can be programmed to retain the new parameter in memory even if power is interrupted or ter
12. 003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 30 Sequencer Controls Computer Function Bar Code Command Description Command START END 27 Programming Menu Il Ill Il Ill 8A Trigger Input sync signal positive logic High active Trigger Input sync signal D 8B negative logic Low Active Sequencer output SO 8C synchronous transmission Il 1111 I Sequencer output 8D synchronous transmission Il Ill Il I negative true logic 8E Sequencer output one shot transmission Sequencer output MN S NM DULL negative true logic 8G Sequencer output one shot duration 10 mS 8H Sequencer output one shot duration 20 mS 8l Sequencer output one shot duration 30 mS 8J Sequencer output one shot duration 40 mS 8K Sequencer output one shot duration 50 mS 8L Sequencer output one shot duration 60 mS Use Z2 computer command to store in memory prior to power off CONTINUED ON NEXT PAGE Page 54 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 30 Sequencer Controls Computer Function Bar Code Command Description Command START END 27 Programming Menu ALL II 8M Sequencer output one shot duration 70 mS 8N Sequencer output one shot duration 80 mS 80 Sequencer output one shot duration 90 mS 8P Sequencer output one shot duration 100 mS EM M E
13. 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 11 Creating a Prefix and or Suffix Computer Function Bar Code Command Description Command START END Z7 Programming Menu NAN IN w care M Display Prefix Suffix Z4 value and length expressed in Il liil Ill Il hexidecimal format The scanner can be programmed to transmit a prefix and or suffix with the decoded data A Prefix or a Suffix is composed of up to 4 characters The following steps are used to establish a Prefix that will be transmitted with the bar code data 1 Scan Start Scan the bar code representing the symbology to which you wish to add a Prefix 3 Scan the character s that will comprise the Prefix Up to four numeric alpha or control character s may be used 4 Scan STOP to exit the Programming Mode Example To add the alpha character A as a Prefix and B as a Suffix to UPC A bar code data Scan START END Programming Mode Scan N1 representing a Prefix for UPC A Scan OA representing the alpha character A Scan N6 representing a Suffix for UPC A Scan OB representing the alpha character B Scan START END Programming Mode The same steps are used to establish a Suffix Page 33 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 12 Setting Prefixes Identifying the Symbology Page 34
14. 1 character H2 cosa coser m Disable 2 characters 2 of 5 Enable 1 character H3 cose 33 ana ocean MTM Enable 2 characters 2 of 5 To avoid truncation errors the scanner can be programmed to only decode bar codes of one specific length i e containing a specific number of digits It is also possible to program the scanner to only decode bar codes of either of two specific lengths To fix one 1 length or number of digits of bar code 1 Scan START to enter the 1 programming mode 2 Scan Enable fixation bar code 2 3 Scan a sample bar code of 3 the desired length 4 Repeat Step 3 re scanning 4 the sample bar code 5 Scan STOP to exit the 5 programming mode To fix two 2 different lengths of bar codes Scan START to enter the programming mode Scan Enable fixation bar code Scan a sample bar code of the desired length 1 Scan a sample bar code of the desired length 2 Scan STOP to exit the programming mode NOTE Fixation can also be programmed using computer commands through your RS232 by typing lt ESC gt 7V lt CR gt followed by lt gt 2 digit length 1 lt CR gt 7W would be appropriate for length 2 Type lt gt 00 lt CR gt to define either length as no fixed number Fixing the Number of Digits can only be applied to Code 39 Codabar NW 7 2 or 5 and MSI Plessey PC Code 93 IATA and Code 128 are not affected Page 32 Manual No 25 ULHAR101
15. 101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 22 Positive amp Negative Bar Codes Computer Function Bar Code Command Description Command START END 27 Programming Menu Ill Ill Il Ill V2 Positive bar code only black bars white spaces Both positive amp negative bar V4 code 23 Setting the Trigger Function Computer Function Bar Code Command Description Command START END G7 moe Disable the trigger function S7 me ITI III continuously Factory Set Enable the trigger function Red S8 scanning light is OFF until trigger 11111 I is activated or pulled 7 Activate the trigger turns on the Use red scanning light Computer Command The Trigger function is disabled in the default setting This means that the red scanning light is ON continuously and the scanner is always ready to read For some applications you may wish to activate the scanner only at a specific time This can be done by enabling the Trigger function Once in the Trigger Enabled mode the red scanning light is OFF until the trigger is activated or pulled Either a hardware trigger or a software trigger pulse may be used to activate the scanner The hardware trigger is actuated by pulling Pin 16 on the standard DB25 female connector LOW The software trigger is actuated by downloading and lt ESC gt Z lt CR gt computer command
16. 2 259 3 Distance inches Field of View Field of View Page 59
17. 6 Scanner Servicing and Maintenance The LHA7126 LHA7127 scanner contains no user adjustable or serviceable parts in the interior of the scanner All product service must be performed by the Opticon Service Department in Orangeburg NY Opening the scanner will void the warranty and could expose the operator to LED light The LED s are classified as a Class 1 LED Product per IEC 825 1 1997 A CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous LED light exposure A CAUTION Class 1 LED power up to 15 mW in a 0 1ms pulse at 635 670 nm could be accessible in the interior The LHA7126 LHA7127 is warranted for 5 years including parts and workmanship If you need warranty or out of warranty repair first call 1 800 636 0090 to obtain a Returned Material Authorization RMA number You will be provided a number and shipping instructions There is no scheduled maintenance required for the LHA7126 LHA7127 The scanner can be cleaned using a water dampened lint free or lens cloth Be careful to avoid excessive moisture that would penetrate the housing or obscure the window While use of cleaning fluids other than water are not recommended a neutral detergent or ethanol would be preferred if necessary Do not use bleach at full or diluted strength as damage to the painted case and or window may result Page 17 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini H
18. Calculate check digit E oil 16 LULL AIM specifications FB Calculate check digit Modulo 7 CONTINUED ON NEXT PAGE Page 29 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Codabar NW 7 Format Start 1 to 42 Check Stop Character data digits digit Character Asus SES CETER cla al As stem dci a e Codabar NW 7 has four different start stop character schemes as shown above The check digit is optional and if present would be the last character e Ifthe scanner is programmed to calculate the check digit and the bar code is not printed with a check digit the bar code will not be read 8 Options for 2 of 5 Computer Function Bar Code Command Description Command START END Z7 Programming Menu Il Ill Il Ill GO Do not calculate check digit 111 Il lii Ill D e coc MM 62 rar ed dot N G3 Do not transmit check digit 11111 illl Ill mo menes NN LS 2 of 5 Format Standard and Interleaved 1 to 44 data digits CD numeric only 0 to 9 Check Digit Opticon strongly recommends that the Fixing the Number of Digits featured on page 32 be employed whenever 2 of 5 bar codes are used Page 30 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 9 Options for IATA
19. GE Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 4 Delete Deactivate Specific Bar Code Symbologies continued Computer Function Bar Code Command Description Command START END 27 Programming Menu NAN III an pecle code 28 TUTTI I 4O sense ANNAN 4p abe DATA PON sZ 111111111 5 Options for UPC Computer Command Function Description Bar Code Command 27 START END Programming Menu E2 UPC A 13 Digits Add leading zero Enable check digit E3 UPC A 12 Digits Do not add leading zero Enable check digit E4 UPC A 12 Digits Add leading zero Disable check digit ES UPC A 11 Digits Do not add leading zero Disable check digit E6 UPC E 8 Digits Add leading zero Enable check digit E7 UPC E 7 Digits Do not add leading zero Enable check digit ES UPC E 7 Digits Add leading zero Disable check digit E9 UPC A 6 Digits Do not add leading zero Disable check digit Page 27 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 6 Options for Code 39 Computer Function Bar Code Command Description Command START END Z7 Programming Menu Ill Ill Il Ill 7C Enable 1 character 3 characters including start stop characters 70 sai ca
20. User s Manual LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Manual No 25 ULHAR101 01 Rev February 2003 a on 8 Olympic Drive Orangeburg NY 10962 Tel 914 365 0090 Fax 914 365 1251 Contents Section 1 Introduction and Getting Started 1 Product Overview s ro inei ianiai edindi nennen nnne nnn nnn nnn nnn nen nnne n 1 Quick Start Up Procedure sine 1 Section 2 Technical Specifications uursnunennnnunnnnnennanennnnnennunennnnnenn 3 Physical Specifications 3 Symbologies Supported enne nennen nennen nnn nn nnn 3 Optical Specifications icon cian n Cerca in 3 Pla M Y 4 SKEW a 4 Tilt Rotation unse ek 4 SET 745 HU Oise 5 Electrical Specifications Us 5 RS232 Communications Specifications essnsnnnesnnennnn nn neuen nn nnnnn nn nennen 5 Connector PIN OUES vacia tasa 6 Environmental Specifications ccccccocccocnnnnaronnnonaronnnnnnrnnnnnanrnrnnranannnnnnns 6 Ordering Information 5 etri ert ae en 6 Section 3 Positioning the Scanner eene ener nnn 7 Achieving Optimum Performance cccccccccncnncncnnnnnnnonnnnannnnnnnnnnnn nazcan 7 Measuring Scanner Performance 9 The Read Rate Test zueensnnennonnnnnnsonnnnnnsonnnnnnsonnnnnnsnnnnnnnsennnnnnennnnnnnen 10 Tips for Achieving High Throughput cccoccconnnccncnnnncnnnnnnnncnnnnnnnononnnnnos 11 Tips for Insuring Highest Data Integrity
21. bar code is read the sound of the buzzer can be used like a Geiger counter As the position of the scanner changes the sound of the buzzer will change The buzzer sound will be loudest and most continuous at the best reading positions Page 9 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner The Read Rate Test The second method the Read Rate Test provides a mathematical calculation of scanning performance In this test the scanner scans a bar code 700 times and then calculates the number of those scans that resulted in a good decode That number expressed as a percentage will be transmitted to the host For example 93 means that the scanner decoded the bar code symbol 93 times out of the 650 scan attempts By performing the Read Rate Test with the scanner mounted in various positions you can determine which of those locations results in the best performance How to perform the Read Rate Test Perform the following steps after you have correctly configured communications to the computer via your RS232C port and power is made available to the scanner Send the command lt Escape gt U8 lt Carriage Return gt Note Be sure to use capital letters e g U8 not ug The scanner will read the barcode continuously and will display the ratio of the number of successful reads to the total number of attempts The printout on the screen will appear as follows Example
22. ber can be lower than 700 max with poor quality barcodes Normal scan multiple scan 93 5 indicates the percentage of good Trigger disabled reads to total attempts T Small and large The control character to be output is CR Buzzer 3 KHz volume max ODE carriage return line fed ESC 3A Buzzer after decoding 10 ms cursor 3 line UP Good LED after decoding green 100 ms RS232C 9600 bps 8 1 np no handshaking Page 22 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 2 Symbology Selection Computer Function Bar Code Command Description Command ZD ranas MU ees MMM A mE D ony ces 111111 A INA MO asane As ony cotess INIA As owes NN a7 owwseese MM As ony AT LITT n owece QUII n owe 5 owes MNT T ony EAN PANA 5 ony EAN 2 PANA AA CONTINUED ON NEXT PAGE Page 23 2 Symbology Selection continued Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Computer Function Bar Code Command Description Command START END 27 Programming Menu UA I 36 Oniy EAN s PODA o f wmaaes N 3 owmee res MTM 29 A MA 3 Add Activate Specific Bar Code Symbologies Page 24 Computer Function Bar Code Command Des
23. cription Command START END 27 Programming Menu Ill Ill Il Ill B1 Enable all WPC including Addon 52 1111111 33 sean B4 Enable 2 of 5 Industrial Interleaved B5 Enable Code 93 Factory Set s ese MN Factory Set CONTINUED ON NEXT PAGE a x dw ug D Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 3 Add Activate Specific Bar Code Symbologies continued Computer Function Bar Code Command Description Command Z7 START END Programming Menu Ill liil Il Ill Bz cesse A 58 ewe NANA RI suce MIN 2 f murer III o f eec Ra oec LL R5 reci IN R amp creci ANAND R7 Enable Industrial 2 of 5 ll Il I R8 Enable Interleaved 2 of 5 ll I Page 25 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 4 Delete Deactivate Specific Bar Code Symbologies Page 26 Computer Function Bar Code Command Description Command A an A MNAI ie seewce MAN ac oswuwcwos IIA osewcaos NN oen MU 4F Disable EAN 13 8 2 Ill Ill II 46 eus eec IAN a oec 11111111 a scien NIMM Industrial Interleaved 4K Disable Industrial 2 of 5 111 11111 I aL snberretenes2o 5 NINA secs MN CONTINUED ON NEXT PA
24. de 129 AAA D9 IATA Il Il NS SIP LIL n ass MIN NOTE The global default also clears all suffixes Page 36 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 14 Direct Input of Numeric Characters Computer Function Bar Code Command Description Command cx So Qo o LITE Qi ALL Q2 2 PAI AAN Q3 ALL LUE Q4 s ALU Q5 AO AN Qs s PA AAN 97 7 LIED Qs MALAITA Q9 MAMAN 27 Lee ME Page 37 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 15 Direct Input of Alpha Characters en FAMA o a MA o 5 MAA ec c UNA o gt MIA o f QAI o ANA os MNAE o MUI oc ANN os A ox OA o AMAN START END 0M M 7 Program Menu Page 38 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 16 Direct Input of Control Characters Computer Function Bar Code Command Description Command START END 27 Programming Menu Il Il Il Ill 1A AAN 18 LL LL ic III iD MINI 17 Enable Number of Characters Digits Transmitted This feature instructs the scanner to calculate and transmit a number indicating the total number of characters that are being transmitted to the host This
25. ew Front View B 0 to 6 h 35 4 mm a 10 6 0 R Tilt Rotation Side View A oo 0 0 to 10 h 31 4 mm a 10 B 0 R Side View a gt gt i d b y p p Y Y p 0 to 6 h 31 4 mm a 10 6 0 R Front View 0 0 to 10 h 35 4 mm a 10 p 0 R Note Front View is LHA7127 Side View is LHA7126 Page 4 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Curvature JAN 13 R 30 mm 1 2 or JAN 8 R 20 mm 0 8 or Where PCS 0 9 h 35 4 a2 10 0 0 0 R N 7 Electrical Specifications Operating Voltage 5VDC 5 Current Operating 158 mA typical 220 mA max Static 150 mA max Surge 3 A max RS232 Communications Specifications RS232 Data Transmission Format Parameter Default Optional Settings Timing Asynchronous No of Start Bits 1 bit No of Stop Bits 1 bit 1 or 2 bits No of Data Bits 8 bit 7 or 8 bits Parity None Odd Even None Baud Rate 9600 baud 300 to 38 400 baud Handshaking None Hardware Software None RS232 Transmit Receive Character Format TXD Start 7or8 Parity Stop RXD Bit LSB Data Bits MSB Bit Bit RS232 Data Format Decoded Data aoe ES ETX RS232 Signal Level Mark Off Space On TXD Out 5 to 15 5 to 15 RXD In 3 to 15 3 to 15 Page 5 Manual No 25 ULHAR101 01 Febr
26. fications Case Material Steel Black Dimensions Side View Eront View LxHxW 52 x 20 x 55 mm 47 x 20 x 55 mm 1 85 x 0 78 x 2 2 in 1 95 x 0 78 x 2 2 in Weight 100 g 3 5 ounces w o cable Cable Length 2 8 m 6 ft with DB25 pin female connector Mounting 4 threaded M 3 mounting holes 2 on each side not to extend more than 3 mm into the case Symbologies Supported Codabar NW 7 Code 39 Code 93 Code 128 Industrial 2 of 5 MSI Plessey 9 IATA Interleaved 2 of 5 WPC UPC EAN JAN Optical Specifications Scan Rate Wavelength of LED Illumination Read Sensor Focal Distance nominal 700 scans per second 10 660 nanometers CCD linear array Side View Front View 1 2 inches from window 1 4 inches from window Narrow Bar Resolution 5 0 mil at 0 9 PCS Minimum PCS 0 45 min background reflectance of 70 Page 3 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Pitch Front View Hatched no SX read specular zone 10 x o NN S ease O IN Height Y of barcode Pep 109v 4 gt a x o o o m A 20 Side View N o 10 n AOSI y 3 TE amp Height Y INN 4 t y of barcode III o X A CN o o o 7 to Pa x 2 Recommended operation at 10 lt Q4 Q2 lt 15 Avoid specular reflection dead zone hatched Sk
27. fixes and appending suffixes Programmable settings can be downloaded from the host CPU or computer directly to the scanner The LHA7126 LHA7127 scanners are encased in compact rugged steel enclosures The compact size permits installation in the tightest areas Scanners are available in both front and side view configurations allowing great flexibility in mounting and positioning the scanner for optimum performance Quick Start Up Procedure This section is for those who wish to start using the scanner before reading the complete manual In only a few steps the scanner will be operable Turn off the power to your PC and connect the scanner to an RS232 communications port Note You must provide 5 Volt DC power to the scanner This can be accomplished using the power supply and patch cable available from Opticon If the power supply is obtained from another source verify that it is identified with the CE mark Turn on the power to the PC 1 Using communications software e g Procom set the communication parameters 9600 baud 1 Start Stop Bit 8 Data Bits No Parity No Handshaking No Flow Control 2 If you are operating in a Microsoft Windows 3 1 environment skip to Step 5 3 If you are operating in a Microsoft Windows 95 98 2000 XP environment you can set the communication parameters using Hyper Terminal as follows Open Hyper Terminal This can be done from Start gt Programs gt Accessories Communications Select Hypert
28. from the host See Scanner Timeout to establish the length of time the scanning light remains ON after the trigger is activated Page 47 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 24 Selecting the Read Mode Computer Function Bar Code Command Description Command START END 27 Programming Menu NAN III 111 Trigger enabled mode only IS 52 cose ANNA 7E Scan 2 labels straight across 111 Ill I 7F Scan 3 labels straight across 1111 11111 I 7G Scan 4 labels straight across 111 Il Il Ill 7H Does not allow first bar distortion II Ill Il Ill 71 Allow first bar distortion 111 1111 Il Ill 70 A MN 7 swiss NAAA Relaxes tolerance on first bar increasing to 8x narrow bar width on first bar Decoding time may be increased CONTINUED ON NEXT PAGE Page 48 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 24 Selecting the Read Mode continued The operation of the scanner in the various read modes is described in the table below The Continuous Read mode is helpful in positioning the scanner for optimum reading In Continuous Read the scanner s buzzer functions like a Geiger counter sounding the most active at the position achieving the greatest number of good reads Mode Trigger Function Enabled
29. from the window of the scanner to the bar code label should be equal to the focal distance of the scanner For the LHA7126 LHA7127 fixed position scanners the nominal focal distances are Side View LHA7126 1 2 inches 31 mm Front View LHA7127 1 4 inches 35 mm Page 7 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Depth of Field Just as with a camera the scanner has a depth of field It can read bar codes that are not precisely at the focal distance maybe a little closer or a little farther away However ifthe bar code label is positioned too far from the focal distance the scanner may not be able to successfully decode it The depth of field varies based on the density of the bar code i e the thickness of the bars Very high density bar codes which have very narrow bars are readable over a much shorter distance range than low density bar codes with larger bars The following table shows the typical depth of field closest to farthest reading distances for the LHA7126 LHA7127 scanners The actual performance may differ slightly from unit to unit Also it is important to note that this data was measured under ideal conditions using high quality bar code labels In a real world environment the conditions will not be as ideal Therefore the best practice is to position the scanner at its focal distance rather than at the extremes of its depth of field Typ
30. ggering lil 1111 Il I Page 50 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 26 Redundant Decoding The Number of Redundant Decodes determines how many times the scanner must decode a bar code and obtain the same value before it will transmit the data For example if the redundancy is set at three times the scanner will not transmit data until it has decoded the bar code and obtained the same values three times in succession If it obtains the same value twice in a row but a different value on the third read attempt it will not transmit If it gets the same value three out of four times it will not transmit It must receive three consecutive identical reads Computer Function Bar Code Command Description Command eD esses MIA xO f oreet 1111111111 ee 11111111 X2 Read bar code three times 111 Il Il Ill X3 Read bar code four times Ill III Ill 7R Read bar code five times M AAU A AH 75 serene ITI Page 51 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 27 Transmitting Error Indications Trigger Enabled only Computer Function Bar Code Command Description Command START END Z7 Programming Menu ALI IN SE Do not transmit error code UA IU BE Transmit BR lt CR gt for bad read or no
31. ical Reading Distance from Window Depth of Field Front View Side View Density of Near Far Near Far Bar Code Distance Distance Distance Distance Readable Bar Code Width Field of View Front View Side View Distance from Window Max Max 1 The table above shows the field of view at various distances from the window The field of view is the maximum width that the scanner is capable of reading A bar code label positioned anywhere within this field of view can be decoded The field of view is also a measure of the widest bar code label that can be read Remember The width of a bar code label includes not only the bars and spaces but also the required white space quiet zone on each end Good design policy is to position the scanner at its focal distance and at the center of the field of view Do not position it near the extremes of the reading range Page 8 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 2 Avoiding Specular Reflection Do not position the scanner at an angle that causes the LED illumination to be reflected directly back into the scanner This is called specular reflection Too much reflected light can blind the scanner preventing a good decode If the bar code label is located on a flat surface specular reflectivity occurs between 0 to 10 degrees off perpendicular See diagram If the bar code label i
32. igh Speed CCD Fixed Position Scanner Appendix A Programming Menus amp Commands Index 1 Global Default amp Scanner Configurations 20 2 Symbology Selection civic id rd 23 3 Add Activate Specific Bar Code Symbologies 24 4 Delete Deactivate Specific Bar Code Symbologies sssssesrseeen 26 5 Options for UPC iie it 27 6 Options for Code 39 erkende rese 28 7 Options for Codabar NW 7 eene mene 29 8 Options fOr 2 of Birne an e eben en eene 30 9 Options for IATA 4 ae ueste se stet rater ceo Ease EET attend 31 10 Fixing the Number of Digits ooocccccccconcnoncnnnncnnnnoncnnnannnarannnnnnnnns 32 11 Creating a Prefix and or Suffix sese 33 12 Setting Prefixes Identifying the Symbology 34 13 Setting Suffixes Identifying the Symbology 35 14 Direct Input of Numeric Characters 37 15 Direct Input of Alpha Characters eeeeenemm nrr 38 16 Direct Input of Control Characters eeeeeeeenne 39 17 Enable Number of Characters Digits Transmitted 39 18 Disable Number of Characters Digits Transmitted 41 19 Communication Parameters ss 42 20 Handshakihng iere iria 44 21 B zzer Operation eere e Per Pere ce e are 45 22 Positive amp Negative Bar Codes ooooooccoccnnncnconnonnnacnnnnnononnnnannnnnn
33. ion Command START END 27 Programming Menu NAN III 2N coe 128 PORN 20 spy PORO 2P m PON 7 Do not transmit data length Il Il liil I all symbologies 19 Communication Parameters Computer Function Bar Code Command Description Command MEME EE LL a LI HEAT Q soo En HIA e eese ANN TT Ka enses ANA lt sss NIAI s I LULA mu Use Z2 Command after computer command to store settings in memory prior to power off Page 42 CONTINUED ON NEXT PAGE Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 19 Communication Parameters continued Computer Function Bar Code Command Description Command ED f cesse IA o eese LL LL s soc ON Lo 7 tua is LUTTE r sees MAMMA P int DAMM 3 eee NOAA LA moe 15 Lop Bt gt PORN AA L6 2p ne PANA AA Use Z2 Command after computer command to store settings in memory prior to power off Page 43 20 Handshaking Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Computer Function Bar Code Command Description Command START END 7 o egere MN 10 Wait for CTS from terminal Unlimited 1 Wait for CTS from terminal 100 mS D Wait for CTS from terminal 200 mS 13 Wait for CTS f
34. itioning the scanning to obtain the best scanning performance Application Notes describe guidelines for maximizing specific characteristics Configuring the Scanner Describes how various parameters can be programmed to customize the scanner for your specific application Application Engineering Support Discusses the most common questions and concerns when adapting a LHA7126 LHA7127 scanner in your application Scanner Servicing and Maintenance Discusses the LHA7126 LHA7127 scanner warranty maintenance and cleaning procedures Detailed Supporting Information Provides detailed information in specific areas such as the programming commands for configuring various parameters of a LHA7126 LHA7127 scanner Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Section 1 Introduction and Getting Started Product Overview LHA7126 LHA7127 Fixed Position Scanners are miniature 700 scan per second bar code readers designed to be easily incorporated into host equipment CCD scanning technology features 100 solid state design with absolutely no moving parts Durability and reliability are assured Advanced 32 bit microprocessor technology coupled with Opticon s proven decoding algorithms result in high speed operation with superior accuracy The scanners are fully programmable allowing the user to customize parameters including changing communication settings selecting symbologies adding pre
35. minated If for any reason however the scanner is instructed to return all parameters to default settings it will return to the U4 default settings Default settings are indicated by a pointing hand symbol T2 throughout the menus to follow To restore the out of the box settings shown in the following table use the U4 setting Parameter Out of the Box Setting U4 9600 baud 8 data bits 1 stop bit No parity No handshaking Scan Rate 700 Scans Second Disabled Angga Funcion Scanner Timeout 2 Seconds After Triggering Bar Code WPC 2 of 5 NW 7 Code 39 Symbologies Code 93 Code 128 IATA MSI Plessey Maximum Volume Buzzer After Decode 3kHz 2kHz After Decode Duration 200 ms Error Indications No Bad Read Good Read LED After Decode 200 ms Filter Output From Low or High Gain RS 232 Communications Page 13 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Section 5 Application Engineering Support Technical Assistance and Support Opticon is eager to help you integrate the LHA7126 LHA7127 scanner into your application Our technical support staff is available to answer any questions or work with you to adapt the scanner to your specific situation We are happy to answer your questions assist in configuring and positioning the scanner for optimum operation and help resolve any problems you encounter Call us at 1 800 636 0090 Common Cau
36. ncer MM CO Disable check digit calculation III lii Ill FD C1 Enable check digit calculation II ll Il Ill JEN C3 Do not transmit check digit 111111 Il Ill DO Do not transmit start stop characters emn TEE e 43 Data digits are available O to 9 A to Z caps only plus 9o and space If a check digit is present it will appear as part of the data e If the scanner is programmed to calculate the check digit and the bar code is not printed with a check digit the bar code will not read e Another option available for Code 39 is to enable the reading of a single character bar code See the section on Fixing the Digit for this option Page 28 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 7 Options for Codabar NW 7 Computer Function Bar Code Command Description Command START END 27 Programming Menu Ill Ill Il Ill 7K Enable 1 character 3 characters including start stop characters A pele cheer NOA FO Do not transmit start stop characters F1 Transmit start stop characters as ABCD TN E F2 Transmit start stop characters as abcd tn e F3 Transmit start stop characters as ABCD ABCD F4 Transmit start stop characters as abcd abcd f 1111111 F6 Do not transmit check digit AMI Il Ill F7 Do not calculate check digit 11111 Il I F8 Calculate check digit Modulo 10
37. ns 47 23 Setting the Trigger Function uussssnssnennnenennnnnnnnnnnnnnnnnn nn nnnnnannnnn 47 24 Selecting the Read Mode oocccccocccnonoccccnnnnoncnnnnanencnnnnnnnnnnnnnrnrnnnnnes 48 25 Scanner Timeout Trigger Enabled Mode only 50 26 Redundant Decoding aa 51 27 Transmitting Error Indications Trigger Enabled only 52 28 Print Quality Adjustments uesnnsnenenneennenennnnnnn on ke ERE nennen 52 29 LED Operation a di 53 30 Sequencer Controls Lines 54 Page 19 1 Global Default amp Scanner Configurations Page 20 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Computer Function Bar Code Command Description Command A MN T sere LIA u erase MAMMA AI pe eee HIHI uo comerte INM us secs IMI Il U4 Return to Default Settings IM lil I us 111111 u9 f sommeren MIMI CONTINUED ON NEXT PAGE Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 1 Global Default amp Scanner Configurations continued Note Where computer commands appear in parenthesis bar code commands must be used to program Computer Function Bar Code Command Description Command Z7 START END Programming Menu Ill liil Il Ill Z1 Reset all values set by command Il 1111
38. occ NA Use Z2 computer command to store in memory prior to power off Page 55 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Appendix B Dimensional Drawings Front View A o in LU N NS m m M Nn Co Y E irs lt 55 gt lt 27 5 gt lt 55 zc a n m SF A L S Li2J N Side View lt 24 65 lt 52 d y Hh OB a75 gt a i 4 8 p es j nm 4 x M3 E 55 3 Note To prevent infiltration of dust or other contaminants into the scanner through the mounting holes provided in the unit s case short screws M3 6 may be placed in each hole location The shafts must not penetrate into the case further than 0 25 inches 6mm Page 57 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Appendix C Optical Performance Charts Bar Code Density Bar Code Density 13 15 20 10 13 15 20 4 Front View 10 0 5 1 1 5 2 2 5 3 Distance inches Side View OL ER Q5 ub as
39. om the Settings menu select Terminal Emulation Set the emulation to TTY generic From the Settings menu select Terminal Preferences and select the following Terminal Modes Line Wrap Local Echo Sound CR LF Inbound Outbound Columns 80 From the Settings menu select Communications select the COM port and set communication parameters as shown in Step 2 including no flow control To verify that the scanner and the PC are communicating properly send the following command from your PC keyboard to activate the scanner s buzzer Send the command lt Escape gt V5 lt Carriage Return gt Note Be sure to use capital letters e g V5 not v5 The buzzer should sound indicating that good communications have been established A red scanning light should be visible If it is not visible the scanner may be in a mode that requires a Trigger Command from the PC to activate it You can exit that mode by sending the following command from your PC keyboard lt Escape gt S7 lt Carriage Return gt The Trigger mode will now be deactivated and the red scanner light will be continuously illuminated This Quick Start Up procedure will get you started However to best understand the full capabilities of this scanner you should read the complete manual Page 2 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Section 2 Technical Specifications Physical Speci
40. rm exe to create a New Connection Inthe Connection Description dialog screen enter a name for the new file If desired select an Icon Click OK Inthe Connect To Phone Number dialog screen in the box entitled Connect using select the communication port for example Direct to Com 1 Click OK Inthe Com 1 Properties screen enter the appropriate Port Settings Bits per second 9600 Data bits 8 Parity None Stop Character 1 Handshaking None Click OK The hyper terminal folder you just created will open From the File pull down menu select Properties then click on the Setting Tab Page 1 4 5 6 7 8 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Inthe Properties Settings dialog screen Select Terminal keys for the Function arrow and control key then Select AWSI for Emulation the Back scroll buffer line can remain at the default 500 Click on the ASCII Setup button In the ASCII Setup screen select Echo typed locally so that any keyboard commands you input will appear on your screen Click OK This returns you to the Properties Setting Click OK Your PC and the scanner should now communicate Skip to Step 6 In a Microsoft Windows 3 1 environment set the communication parameters using the Terminal function of Windows a From Window s Program Manager Main Menu select Terminal From the 7erminal menu select Settings Fr
41. rom terminal 400 mS 14 ACK NAK Delay Time Unlimited 15 ACK NAK Delay Time 100 mS 16 ACK NAK Delay Time 500 mS 17 ACK NAK Delay Time 1000 mS PO No Handshaking Factory Set P1 e MMMM Modem PAI P3 Aa LLL pa scxornorsoonsen A s eme MIN Use Z2 Computer Command to store in memory prior to power off Page 44 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 21 Buzzer Operation Computer Function Bar Code Command Description Command START END ZD 1111 A TH woe opera NANA T2 vero NA AND 73 votomeci NANA V5 Ring buzzer once at 3kHz for 200 mS V6 Ring buzzer once at 3kHz 2kHz interval for 200 mS V7 Ring buzzer once at 2kHz 3kHz interval for 200 mS wo esee NANA wi emen A Enable buzzer at 3kHz wo eser UAM Enable buzzer at 2kHz w3 sens MEN CONTINUED ON NEXT PAGE Page 45 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner 21 Buzzer Operation continued Computer Function Bar Code Command Description Command START END 27 Programming Menu WH III W5 Buzzer duration 0 20 sec Il 1111 I E W6 Buzzer duration 0 40 sec I liil Ill W7 Buzzer duration 0 05 sec I I Il Ill W8 Buzzer duration 0 01 sec lil 1111 I Page 46 Manual No 25 ULHAR
42. s located on a cylindrical surface such as a test tube the angle of specular reflection is measured tangent to the curve If the curved surface is also moving there may be more than one position causing specular reflection The following diagram indicates the area to avoid Front View Side View Hatched no Hatched no read specular read specular zone 10 zone 10 o a Height V x S Height_YW Mi of barcode o of barcode III o NAO N A 3 Quality Bar Code Labels The quality of the bar code label can affect the scanning performance Poor quality labels are more difficult to decode and may result in non reads or potential misreads The bar code label should be printed to specifications This means that the bars are printed within spec with the correct widths no ink spread crisps edges and no voids There should be a sufficient quiet zone on both end of the bar code label For best results the paper or label stock should have a matte finish to diffuse light The print contrast signal which is a comparison of the reflectance of the bars and the background stock should be as high as practical Measuring Scanner Performance Two methods are helpful in determining the optimum position of the scanner The first method is to program the scanner for Trigger Disable and Continuous Read modes The scanner will be always on and will continuously read the same bar code Since the buzzer sounds each time the
43. ses of Poor Performance The most common reasons for poor scanning performance are listed below Bar codes are not positioned at the focal distance of the scanner Specular reflection is impacting the scanner Change the angle position of the scanner or the bar code Poor quality of printed bar codes Bar codes are out of specification The paper on which the bar code is printed is highly reflective or has a glossy finish causing light to be reflected into the scanner The distance from the scanner to the bar code is not suitable for the density of the bar code Or the density of the bar code beyond the scanners capability If the red illuminating light of the scanner is not on the scanner may be in the Trigger Enable mode expecting a trigger signal Modified and or Customized Scanners Opticon will work with you to modify or customize scanners to match your requirements Scanners can be modified in terms of connectors type pin outs cable length default settings custom software and many other areas Opticon will modify scanners in our factory and ship you scanners that match your specific requirements By incorporating your modifications directly into production scanners you receive scanners tailored for your need They can be used immediately without the need for further modification or rework Page 15 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Section
44. the decoded data at the highest baud rate 38 400 baud Disable buzzer functions Tips for Insuring Highest Data Integrity There are several parameters that can enhance your confidence that the correct bar code data is transmitted Note that by emphasizing the accuracy and security of the data other areas of the scanner operation may be affected for example you may not achieve the highest throughput If accuracy and data integrity are critical consider some or all of these settings Program the scanner to require a high number of redundant decodes prior to transmitting For example program the scanner to decode a bar code exactly the same way three consecutive times before transmitting the data Then decoding the bar code the same way 2 out of 3 times or any 3 out of 4 times is not sufficient It must obtain three consecutive and identical decodes Utilize a predetermined fixed length of bar code Program the scanner to only decode a bar code of that length Bar codes of any other length will be ignored The quality of the printed bar code must be excellent Use a bar code symbology that contains an internal check digit and program the scanner to calculate that check digit for validity prior to transmitting Do not use a symbology with poor internal verification or subject to partial decodes such as 2 of 5 or MSI Plessey Only enable those symbologies that you will be decoding Transmit data at low baud rates to
45. uary 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Connector Pin outs DB25 pin Female connector with screws Pin No Signal Color Direction 1 Frame Ground Black 2 RXD White Input 3 TXD Green Output 4 CTS Blue Input 5 RTS Gray Output 7 Signal Ground Purple 16 Trigger Brown Input 25 5V Red Environmental Specifications Temperature Operating 0 to 40 C 32 to 104 F Storage 10 to 60 C 14 to 140 F Humidity non condensing Operating 20 to 8096 Storage 20 to 90 Ambient Light Fluorescent or incandescent below 5 kilolux Ordering Information Part No Model LHA7127RR1S xxx Front View LHA7126RR1S xxx Side View Where xxx is configuration dependant Page 6 Manual No 25 ULHAR101 01 February 2003 LHA7126 LHA7127 Mini High Speed CCD Fixed Position Scanner Section 3 Positioning the Scanner Achieving Optimum Performance Three items greatly impact performance 1 Distance from the scan window to the bar code 2 Specular Reflection and 3 Quality of Bar Code Labels 1 Distance to the Bar Code The operation of the scanner is similar to a camera If you photograph an object that is out of focus the resulting picture will be blurry The same is true with the scanner Ifthe bar code label is out of focus the scanner may have difficulty decoding what appears to be fuzzy bars and spaces Focal Distance Ideally the distance
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