Symbol LS1902C, LS1900T User Manual

LS1900 Series

Product Reference Guide

LS1900 Series

Product Reference Guide

72-50930-01

Revision A

June 2001

© 2001 by Symbol Technologies, Inc. All rights reserved.
No part of this publication may be reproduced or used in any form, or by any electrical or

mechanical means, without permission in writing from Symbol. This includes electronic or
mechanical means, such as photocopying, recording, or information storage and retrieval
systems. The material in this guide is subject to change without notice.

The software is provided strictly on an “as is” basis. All software, including firmware,
furnished to the user is on a licensed basis. Symbol grants to the user a non-transferable
and non-exclusive license to use each software or firmware program delivered hereunder
(licensed program). Except as noted below, such license may not be assigned,
sublicensed, or otherwise transferred by the user without prior written consent of Symbol.
No right to copy a licensed program in whole or in part is granted, except as permitted under
copyright law. The user shall not modify, merge, or incorporate any form or portion of a
licensed program with other program material, create a derivative work from a licensed
program, or use a licensed program in a network without written permission from Symbol.
The user agrees to maintain Symbol’s copyright notice on the licensed programs delivered
hereunder, and to include the same on any authorized copies it makes, in whole or in part.
The user agrees not to decompile, disassemble, decode, or reverse engineer any licensed
program delivered to the user or any portion thereof.

Symbol reserves the right to make changes to any software or product to improve reliability,
function, or design.

Symbol does not assume any product liability arising out of, or in connection with, the
application or use of any product, circuit, or application described herein.

No license is granted, either expressly or by implication, estoppel, or otherwise under any
Symbol Technologies, Inc., intellectual property rights. An implied license only exists for
equipment, circuits, and subsystems contained in Symbol products.

Symbol, Spectrum One, and Spectrum24 are registered trademarks of Symbol
Technologies, Inc. Other product names mentioned in this guide may be trademarks or
registered trademarks of their respective companies and are hereby acknowledged.

Symbol Technologies, Inc.
One Symbol Plaza
Holtsville, New York 11742-1300

http://www.symbol.com

Contents

About This Guide

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix

Chapter Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix

Notational Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Symbol Support Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi

LS1900 Series Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiii

LS1900 Series Warranty Coverage and Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiv

General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiv

Chapter 1. Getting Started

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Unpacking Your Scanner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Setting Up the LS1900 Series Scanner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Installing the Interface Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Removing the Interface Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Connecting to a Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Chapter 2. Scanning

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Beeper Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

LED Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Scanning in Hand-Held Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Scanning with the LS190xx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Decode Zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Scanning in Hands-Free Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Assembling the Stand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

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LS1900 Series Product Reference Guide

Mounting the Stand (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9

Scanning in the Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10

Chapter 3. Maintenance and Technical Specifications

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

LS1900 Series Signal Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

Chapter 4. Programming the Scanner

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

Scanning Sequence Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Errors While Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Standard Default Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

Parameter Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10

Set Default Parameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10

Trigger Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11

Beeper Tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12

Beeper Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13

Laser On Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14

Power Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-15

Beep After Good Decode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16

Transmit “No Read” Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-17

Linear Code Type Security Level. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18

Bi-directional Redundancy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-20

Host Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-21

Enable/Disable UPC-E/UPC-A/UPC-E1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-50

Enable/Disable EAN-8/EAN-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-51

Enable/Disable Bookland EAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-52

Decode UPC/EAN Supplementals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-53

Decode UPC/EAN Supplemental Redundancy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-54

Transmit UPC-A/UPC-E/UPC-E1 Check Digit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-55

UPC-A Preamble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-56

UPC-E Preamble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-57

UPC-E1 Preamble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-58

Convert UPC-E to UPC-A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-59

Convert UPC-E1 to UPC-A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-60

EAN Zero Extend. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-61

Convert EAN-8 to EAN-13 Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-62

UPC/EAN Security Level. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-63

UPC/EAN Coupon Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-65

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Contents

Random Weight Check Digit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-66

Linear Supplementals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-67

Enable/Disable Code 128. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-68

Enable/Disable UCC/EAN-128. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-69

Enable/Disable ISBT 128. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70

Enable/Disable Code 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-71

Enable/Disable Trioptic Code 39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-72

Convert Code 39 to Code 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-73

Code 32 Prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-74

Set Lengths for Code 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-75

Code 39 Check Digit Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-77

Transmit Code 39 Check Digit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-78

Enable/Disable Code 39 Full ASCII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-79

Code 39 Buffering (Scan & Store) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-80

Enable/Disable Code 93. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-83

Set Lengths for Code 93. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-84

Code 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-86

Set Lengths for Code 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-87

Code 11 Check Digit Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-89

Transmit Code 11 Check Digits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-90

Enable/Disable Interleaved 2 of 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-91

Set Lengths for Interleaved 2 of 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-92

I 2 of 5 Check Digit Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-94

Transmit I 2 of 5 Check Digit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-95

Convert I 2 of 5 to EAN-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-96

Enable/Disable Discrete 2 of 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-97

Set Lengths for Discrete 2 of 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-98

Enable/Disable Codabar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-100

Set Lengths for Codabar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-101

CLSI Editing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-103

NOTIS Editing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-104

Enable/Disable MSI Plessey. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-105

Set Lengths for MSI Plessey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-106

MSI Plessey Check Digits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-108

Transmit MSI Plessey Check Digit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-109

MSI Plessey Check Digit Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-110

RSS 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-111

Transmit Code ID Character. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-113

Intercharacter Delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-114

Pause Duration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-115

Prefix/Suffix Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-116

Scan Data Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-117

Numeric Bar Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-119

Cancel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-121

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Chapter 5. Advanced Data Formatting

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Rules: Criteria Linked to Actions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Using ADF Bar Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Special Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Begin New Rule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Save Rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Quit Entering Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Disable Rule Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Criteria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Code Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Code Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Message Containing A Specific Data String . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Specific String at Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Specific String, Any Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Any Message OK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5- 3

Rule Belongs To Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

Send Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

Setup Field(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

Modify Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5

Pad Data With Spaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

Pad Data With Zeros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

Beeps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

Send Keystroke (Control Characters and Keyboard Characters) . . . . . . . . . . . . . . . . . . . . . .5-6

Turn On/Off Rule Sets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

ADF Bar Code Menu Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

Rule 1: The Code 128 Scanning Rule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7

Rule 2: The UPC Scanning Rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7

Alternate Rule Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8

Rules Hierarchy (in Bar Codes). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9

Default Rules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10

Special Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11

Begin New Rule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11

Save Rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11

Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12

Quit Entering Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12

Disable Rule Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-13

Criteria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-14

Code Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-14

Code Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-16

Specific Data String. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-20

vi

Contents

Numeric Keypad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

Rule Belongs To Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

Actions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

Send Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

Setup Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

Send Preset Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

Modify Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

Pad Data with Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33

Pad Data with Zeros. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-37

Beeps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41

Control Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42

Keyboard Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-46

Send ALT Characters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-58

Send Command Characters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-62

Send Special Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-64

Send Keypad Characters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-65

Send Function Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-69

Turn On/Off Rule Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-75

Alphanumeric Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-76

Appendix A. Programming Reference

Symbol Code Identifiers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

AIM Code Identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Prefix / Suffix Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

ASCII Character Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

Keyboard Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14

Glossary
Index
Feedback

vii

LS1900 Series Product Reference Guide

viii

About This Guide

Introduction

The LS1900 Series Product Reference Guide provides general instructions for setting up,
programming, operating, maintaining, and troubleshooting the LS1900 Series scanners.

Chapter Descriptions

• Chapter 1, Getting Started provides a product overview, unpacking instructions,
and information about connecting your scanner to a host.

• Chapter 2, Scanning describes parts of the scanner, beeper and LED definitions,
how to use the scanner in hand-held and hands-free modes, and decode zones.

• Chapter 3, Maintenance and T echnical Specifications provides information on how
to care for your scanner, troubleshooting, and technical specifications.

• Chapter 4, Programming the Scanner provides all the bar codes necessary to
program your scanner.

• Chapter 5, Advanced Data Formatting (ADF) describes how to customize scanned
data before transmitting to the host.

• Appendix A, Programming Reference provides a table of AIM code identifi ers,
ASCII character conversions, and keyboard maps.

ix

LS1900 Series Product Reference Guide

Notational Conventions

The following conventions are used in this document:

• Bullets (•) indicate:

• action items

• lists of alternatives

• lists of required steps that are not necessarily sequential

• Sequential lists (e.g., those that describe step-by-step procedures) appear as
numbered lists.

Related Publications

The LS1900 Series Quick Reference Guide, p/n 72-51366-xx, provides general information
to help the user get started with the scanner. It includes basic set-up and operation
instructions.

For the latest versions of the LS1900 Series Quick Reference Guide and Product
Reference Guide go to: http://www.symbol.com/manuals.

Service Information

If you have a problem with your equipment, contact the Symbol Support Center for your
region. See page xi for contact information. Before calling, have the model number, serial
number, and several of your bar code symbols at hand.

Call the Support Center from a phone near the scanning equipment so that the service
person can try to talk you through your problem. If the equipment is found to be working
properly and the problem is reading bar codes, the Support Center will request samples of
your bar codes for analysis at our plant.

If your problem cannot be solved over the phone, you may need to return your equipment
for servicing. If that is necessary, you will be given specific directions.

Note: Symbol Technologies is not responsible for any damages incurred during

shipment if the ap prov ed s hip pin g container is not u se d. Ship pi ng the units
improperly can pos si bly void the warran ty. If th e original shipping container
was not kept, contact Symbol to have another sent to you.

x

About This Guide

Symbol Support Center

For service information, warranty information or technical assistance contact or call the
Symbol Support Center in:

United States

Symbol Technologies, Inc.
One Symbol Plaza
Holtsville, New York 11742-1300
1-800-653-5350
1-631-738-2400

United Kingdom

Symbol Technologies
Symbol Place
Winnersh Triangle, Berkshire RG41 5TP
United Kingdom
0800 328 2424 (Inside UK)
[phone] (Outside UK)

Australia

Symbol Technologies Pty. Ltd.
432 St. Kilda Road
Melbourne, Victoria 3004
1-800-672-906 (Inside Australia)
[phone] (Outside Australia)

Denmark

Symbol Technologies AS
Gydevang 2,
DK-3450 Al lerod, Denm ark
7020-1718 (Inside Denmark)
[phone] (Outside Denmark)

1

Canada

Symbol Technologies Canada, Inc.
2540 Matheson Bouleva rd East
Mississauga, Ontario, Canada L4W 4Z2
905-629-7226

Asia/Pacific

Symbol Technologies Asia, Inc.
230 Victoria Street #04-05
Bugis Junction Office Tower
Singapore 188024
337-6588 (Inside Singapore)
[phone] (Outside Singapore)

Austria

Symbol Technologies Austria GmbH
Prinz-Eugen Strasse 70
Suite 3

2.Haus, 5.Stock
1040 Vienna, Austria
1-505-5794 (Inside Austria)
[phone] (Outside Austria)

Europe/Mid-East Distributor Operations

Contact your local distributor or call
[phone]

xi

LS1900 Series Product Reference Guide

Finland

Oy Symbol Technologies
Kaupintie 8 A 6
FIN-00440 Helsinki, Finland
9 5407 580 (Inside Finland)
[phone] (Outside Finland)

Germany

Symbol Technologies GmbH
Waldstrasse 68
D-63128 Dietzenbach, Germany
6074-49020 (Inside Germany)
[phone] (Outside Germany)

Latin America Sales Support

7900 Glades Road
Suite 340
Boca Raton, Florida 33434 USA
1-800-347-0178 (Inside United State s)
[phone] (Outside United States)

France

Symbol Techn ol ogi es France
Centre d'Affaire d'Antony
3 Rue de la Renaissance
92184 Antony Cedex, France
01-40-96-52-21 (Inside France)
[phone] (Outside France)

Italy

Symbol Technologies Italia S.R.L.
Via Cristoforo Columbo, 49
20090 Trezzano S/N Navigilo
Milano, Italy
2-484441 (Inside Italy)
[phone] (Outside Italy)

Mexico

Symbol Technologies Mexico Ltd.
Torre Picasso
Boulevard Manuel Avila Camacho No 88
Lomas de Chapultepec CP 11000
Mexico City, DF, Mexico
5-520-1835 (Inside Mexico)
[phone] (Outside Mexico)

Netherlands

Symbol Technologies
Kerkplein 2, 7051 CX
Postbus 24 7050 AA
Varsseveld, Netherlands
315-271700 (Inside Netherlands)
[phone] (Outside Netherlands)

xii

Norway

Symbol Techn ol ogi es
Trollasveien 36
Postboks 72
1414 Trollasen, Norway
66810600 (Inside Norway)
[phone] (Outside Norway)

About This Guide

South Africa

Symbol Technologies Africa Inc.
Block B2
Rutherford Estate
1 Scott Street
Waverly 2090 Johannesburg
Republic of South Africa
11-4405668 (Inside South Africa)
[phone] (Outside South Africa)

Sweden

Symbol Technologies AB
Albygatan 109D
Solna
Sweden
84452900 (Inside Sweden)
[phone] (Outside Sweden)

1

Customer support is available 24 hours a day, 7 days a week.

Spain

Symbol Techn ol ogi es S.A.
Edificioi la Piovera Azul
C. Peonias, No. 2 - Sexta Planta
28042 Madrid, Spain
9-1-320-39-09 (Inside Spain)
[phone] (Outside Spain)

If you purchased your Symbol product from a Symbol Business Partner, contact that
Business Partner for service.

LS1900 Series Warranty

Symbol Technologies, Inc (“Symbol”) manufactures its hardware products in accordance with
industry-standard practices. Symbol warrants that for a period of five (5) years from date of shipment,
products will be free from defects in materials and workmanship.

This warranty is provided to the original owner only and is not transferable to any third party. It shall
not apply to any prod uc t (i) w hich has been repaired or a lte red unl es s done or approved by Symbol,
(ii) which has n ot been mainta ined in acc ordance with any operati ng or handli ng instruct ions suppl ied
by Symbol, (iii) which has been subjected to unusual physical or electrical stress, misuse, abuse,
power shortage, negligence or accident or (iv) which has been used other than in accordance with
the product operating and handling instructions. Preventive maintenance is the responsibility of
customer and is not covered under this warranty.

Wear items and accessories hav ing a Symbol ser ial number , will carry a 90-day limited w arranty . Non­serialized items will carry a 30-day limited warranty.

xiii

LS1900 Series Product Reference Guide

LS1900 Series Warranty Coverage and Procedure

During the warranty period, Symbol will repair or replace defective products returned to Symbol’s
manufacturing plan t in the US. Fo r warranty servic e in North Ameri ca, call the Sym bol Support Cente r
at 1-800-653-5350. Inte rnational c ustomers sho uld contact the local Symb ol offi ce or support c enter .
If warranty service is required, Symbol will issue a Return Material Authorization Number. Products
must be shipped in the original or comparable packaging, shipping and insurance charges prepaid.
Symbol will ship the r epaired or replacem ent product frei ght and insurance prepaid in North Ame rica.
Shipments from the US or other locations will be made F.O.B. Symbol’s manufacturing plant.

Symbol will use ne w or refurbis hed parts a t its discr etion and wil l own all pa rts removed from repaired
products. Customer will pay for the replacement product in case it does not return the replaced
product to Symbol within 3 days of receipt of the replacement product. The process for return and
customer’s charges will be in accordance with Symbol’s Exchange Policy in effect at the time of the
exchange.

Customer accepts full responsibility for its software and data including the appropriate backup
thereof.

Repair or replacement of a product during warranty will not extend the original warranty term.
Symbol’s Customer Service organization offers an array of service plans, such as on-site, depot, or

phone support, that can be implemented to meet customer’s special operational requirements and
are available at a substantial discount during warranty period.

General

Except for the warranties stated above, Symbol disclaims all warranties, express or implied, on
products furnished hereunder, including without limitation implied warranties of merchantability and
fitness for a particul ar purpose. Th e stated exp ress warranti es are in lie u of all obli gations or li abilities
on part of Symbol for damages, including without limitation, special, indirect, or consequential
damages arising out of or in connection with the use or performance of the product.

Seller’s liability for dama ges to buy er or others resulti ng from the use of any pr oduct , shall in no way
exceed the purchase price of said product, except in instances of injury to persons or property.

Some states (or jurisdictions) do not allow the exclusion or limitation of incidental or consequential
damages, so the proceeding exclusion or limitation may not apply to you.

xiv

Chapter 1

Getting Started

Introduction

The LS1900 Series scanner combines excellent scanning performance and advanced
ergonomics to provide the best value in a lightweight laser scanner. Whether used as a
hand-held scanner or in hands-free mode in a stand, the LS1900 Series ensures comfort
and ease of use for extended periods of time.

LS1902C “Triggerless”

Figure 1-1. LS1900 Series Scanner

LS1900T/LS1902T “Triggered”

1-1

LS1900 Series Product Reference Guide

Note:Unless otherwise noted, the term LS190xx refers to all versions of

the scanner.

Here’s what each member of the LS190xx family offers you:

• LS1902T - This triggered decoded scanner supports the following interfaces:

• Standard RS-232C connection to a host. Proper communications of the

scanner with the host is set up by scanning bar codes.

• Keyboard Wedge connection to a host. Scanned data is interpreted by your

host as keystrokes.

• International Keyboards supported: North America, German, French, French
International, Spanish, Italian, Swedish, British, and Japanese.

• Wand Emulation connection to a host. The scanner is connected to a portable
data terminal, a controller, or host which collects the data as wand data and
interprets it for the host.

• Synapse capability which allows you to connect to a wide variety of host
systems using a Synapse and Synapse adapter cable to connect to a host.

• LS1902C - This ‘triggerless’ decoded scanner offers the same technology and
design as the LS1902T.

• LS1900T - This undecoded version of the LS1902T provides connectivity to
portable terminals and external interface controllers.

Unpacking Your Scanner

Remove the scanner from its packing and inspect it for damage. If the scanner was
damaged in transit, call the Symbol Support Center at one of the telephone numbers listed
on page xi. KEEP THE P ACKING. It is the approved shipping container and should be used
if you ever need to return your equipment for servicing.

1-2

Getting Started

Setting Up the LS1900 Series Scanner

Installing the Interface Cable

1. Plug the interface cable modular connector into the cable interface port on the

bottom of the LS1900 Series handle. (See Figure 1-2.)

2. Gently tug the cable to ensure the connector is properly secured.

3. Connect the other end of the interface cable to the host. (See Connecting to a Host

on page 1-4.)

4. Refer to Parameter Descriptions on page 4-10 for information about programming

your scanner.

Cable interface
port

To host

Figure 1-2. Installing the Cable

Interface cable modular
connector

1-3

LS1900 Series Product Reference Guide

Removing the Interface Cable

Different cables are required for different hosts. To remove the interface cable:

1. Unplug the installed cable’s modular connector by depressing the connector clip
with the tip of a screwdriver.

2. Carefully slide out the cable.

3. Follow the steps for Installing the Interface Cable on page 1-3 to connect a new
cable.

Connecting to a Host

The LS1900 Series scanner supports RS-232C, Keyboard Wedge, Wand Emulation, and
Synapse to interface to a host system. This section describes how to set up each of these
connections.

Connecting Power

If your host does not provide power to the scanner, you will need an external power
connection to the scanner:

1. Connect the interface cable to the bottom of the scanner, as described in Installing
the Interface Cable on page 1-3.

2. Connect the other end of the interface cable to the host (refer to your host manual
to locate the correct port).

3. Plug the power supply into the power jack on the interface cable. Plug the other
end of the power supply into an AC outlet.

1-4

Getting Started

Connecting an RS-232C Interface

This connection is made either directly from the scanner to the host, or indirectly through a
Synapse adapter cable to the host.

RS-232C Direct Connection

Host serial port

Power supply

Interface cable

Figure 1-3. RS-232C Direct Connection

1. Connect the RS-232C interface cable to the bottom of the scanner, as described in

Installing the Interface Cable on page 1-3.

2. Connect the other end of the interface cable to the serial port on the host.

3. Connect the power supply.

Connecting a Keyboard Wedge Interface

When configured for Keyboard Wedge input, the host accepts input from the scanner as
keystrokes. The LS1900 Series scanner can perform Keyboard Wedge input using a
Keyboard Wedge cable, or a Synapse adapter cable (see Figure 1-6 on page 1-8).

1-5

LS1900 Series Product Reference Guide

Keyboard Wedge Cable Connection

Host keyboard port

Y-cable keyboard
connector

Y-cable modular
connector

Power supply
(if needed)

Figure 1-4. Keyboard Wedge Connection with Y-cable

1. Switch off the host and unplug the keyboard connector.

2. Attach the modular connector of the Y-cable to the cable interface port on the
scanner. (See Installing the Interface Cable on page 1-3.)

3. Connect the round male DIN host connector of the Y-cable to the keyboard port on
the host device.

4. Connect the round female DIN keyboard connector of the Y-cable to the keyboard.

5. If needed, attach the optional power supply to the connector in the middle of the Y­cable.

6. Ensure that all connections are secure.

7. Switch on your host system. You are now ready to read bar codes.

Note:During sca nni ng , PC- co m pat ib l e h os t t er mi n al s sh ould be in CAPS

LOCK OFF mode.

1-6

Getting Started

Connecting a Wand Emulation Interface

T o perform Wand Emulation, connect the scanner to a portable data terminal, or a controller
which collects the data as wand data and interprets it for the host.

Portable data terminal COM port

Portable data
Terminal

Interface cable

Power supply
(if needed)

Figure 1-5. Wand Emulation Connection

1. Connect the Wand Emulation interface cable to the bottom of the scanner, as

described in Installing the Interface Cable on page 1-3.

2. Connect the other end of the interface cable to the COM port on the portable data

terminal or controller.

3. Plug one end of the power supply cable into the power receptacle on the interface

cable. Plug the other end of the power supply cable into a wall outlet.

1-7

LS1900 Series Product Reference Guide

Connecting a Synapse Cable Interface

Note:See the Synapse Interface Guide provided with your Synapse cable

for detailed setup instructions.

Symbol’s Synapse Smart Cables enable interfacing to a variety of hosts. The appropriate
Synapse cable has the built-in intelligence to detect the host to which it is connected.

To host

Synapse Smart Cable

Synapse adapter cable

To scanner

Figure 1-6. Synapse Cable Connection

1. Plug the Synapse adapter cable (p/n

25-32463-xx)

into the bottom of the scanner,

as described in Installing the Interface Cable on page 1-3.

2. Plug the other end of the adapter cable into the Synapse Smart Cable.

3. Connect the other end of the Synapse Smart Cable to the host.

1-8

Chapter 2

Scanning

Introduction

This chapter covers the techniques involved in scanning bar codes, beeper and LED
definitions, and general instructions and tips about scanning.

LED

Beeper

Exit Window

Trigger
(Model LS190xT only)

Figure 2-1. LS1900 Series Scanner Parts

2-1

LS1900 Series Product Reference Guide

Beeper Definitions

The scanner communicates with the user by emitting different beep tones and patterns.
Table 2-1 defines beep sequences that occur during both normal scanning and while
programming the scanner.

Table 2-1. Standard Beeper Definitions

Beeper Sequence Indication

Standard Use

Short high tone A bar code symbol was decoded (i f decode beep er

is enabled).

4 Beeps - long low tone A transmission error was detected in a scanned

symbol. The data is ig nored. This occurs i f a unit is

not properly configured. Check option setting.
5 Beeps - low tone Conversion or format error.
Lo/hi/lo tone ADF transmit error.
Hi/hi/hi/lo tone RS-232C receive error.

Parameter Menu Scanning

2-2

Short high tone Correct entry scanned or correct menu sequence

performed.
Lo/hi tone Input error , incorrect bar code or “Cancel” sca nned,

wrong entry, incorrect bar code prog ra mmin g

sequence; remain in program mode.
Hi/lo tone Keyboard parameter selected. Enter value using

bar code keypad.
Hi/lo/hi/lo tone Successful program ex it with change in the

parameter setting.

Code 39 Buffering

Hi/lo tone New Code 39 data was entered into the buffer.
3 Beeps - long high tone Code 39 buffer is full.
Lo/hi/lo tone The buffer was erased, or there was an attempt to

transmit an empty buffer. The Code 39 buffer was

erased or there was an atte mpt to clear or tran smit

an empty buffer.

Scanning

Table 2-1. Standard Beeper Definitions (Continued)

Beeper Sequence Indication

4 Beeps - long low tone Error in data transmission.
Lo/hi tone A successful transmission of buffered data.

LED Definitions

In addition to beep tones, the scanner communicates with the user using a two-color LED
display. Table 2-2 defines LED colors that display during scanning.

Table 2-2. Standard LED Definitions

LED Indication

Off No power is applied to the scanner, or the scanner

is on and ready to scan.
Green A bar code was successfully decoded.
Red A data transmission error or scanner malfunction

occurred.

2-3

LS1900 Series Product Reference Guide

Scanning in Hand-Held Mode

Install and program your scanner. (Refer to Chapter 4, Programming the Scanner for
instructions on programming your scanner.) If you need assistance, contact your local
supplier or the Symbol Support Center.

Scanning with the LS190xx

Figure 2-2. Scanning with the LS190xx

1. Ensure all connections are secure. (See Connecting to a Host on page 1-4.)

2. Aim the scanner at the bar code. If your scanner has a trigger, aim and press the
trigger. (See Aiming on page 2-5 and Decode Zones on page 2-6.)

3. Ensure the scan line crosses every bar and space of the symbol.

RIGHT

012345

4. Upon successful decode, the scanner beeps and the LED turns green. (For more
information on beeper and LED definitions, refer to Table 2-1 and Table 2-2.)

2-4

WRONG

012345

Scanning

Aiming

Do not hold the scanner directly over the bar code. Laser light reflecting directly back into
the scanner from the bar code is known as specular reflection. This specular reflection can
make decoding difficult. The area where specular reflection occurs is known as a “dead
zone”.

Y ou can tilt the scanner up to 65° forward or back and achieve a successful decode (Figure

2-3). Simple practice quickl y show s what toler anc es to work with in.

6

6

4

Figure 2-3. Maximum Tilt Angles and Dead Zone

2-5

LS1900 Series Product Reference Guide

Decode Zones

Note: Typical performance at 73˚ F (23˚ C) on
high quality symbols in normal room light.

LS1902C

5 mil

7.5 mil

2

4

10 mil

6

100% UPC

20 mil

40 mil

0

0

0

0

*

55 mil

7.5

11

12

12.5

in. cm
15

38.1

25.4

10

12.7

5

0

0

5

12.7

10

25.4

15

38.1

W

i

d

t

h
o

f

F

i

e

l

d

2-6

in.

cm

0
0

5

12.7

10

25.4

38.1

Depth of Field

*Minimum distance determined by symbol length and scan angle

Figure 2-4. LS1902C Decode Zone

15

Scanning

Note: Typical performance at 73˚ F (23˚ C) on
high quality symbols in normal room light.

LS1902T

5 mil

0

0

0

0

2

7.5 mil

10 mil

100% UPC

4.5

7

20 mil

*

in. cm

50.820

38.1

15

25.4

10

W

i

d

5

0

5

0

12.7

h
o

f

F

i

t

12.7

e

l

25.4

38.1

50.820

d

10

9

13.5

40 mil

55 mil

22.5

25

15

in.

cm

0
0

5

12.7

10

25.4

15

38.1

Depth of Field

*Minimum distance determined by symbol length and scan angle

Figure 2-5. LS1900T/LS1902T Decode Zone

20

50.8

25

63.5

2-7