Symbol Technologies LS2100 User Manual

LS 2100

Product Reference Guide

LS 2100 Product Reference Guide

70-32818-01

Revision B — April 2001

vi

Symbol Technologies, Inc. One Symbol Plaza, Holtsville N.Y. 11742

LS 2100 Undec o de d Scan ne r

Product R e fe r enc e Gu id e

70-32818-01

Revision B
April 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 manual is subject to change without notice.

The s oftware is pro v ided strictly on an “as is” basis. All sof tware, 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 wor k fr o m a licens ed p r ogram, or use a li cen sed
program in a network without written permission from Symbol. The user agrees to maintain
Symbol’s copyright notice o n t he l ic ensed pr ogra ms delivered hereunder, and to include the
same on any authorized copies it makes, in whole or in part. The user agrees not to
decomp ile, dis as s emble, decode, or r e verse e ngineer any li ce n sed pr ogram del ivered to the
user or any portion thereof.

Symbol reserves the right to make change s to any software or product to improve reli abil ity,
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 T echnologies, 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 Te chnologies,
Inc. Other product names mentioned in this manual may be trademarks or registered
trademarks of their respective companies and are hereby acknowledged.

Symbol T echnologies, Inc.
One Symbol Pl aza
Holtsville, New York 11742-1300

http://www.symbol.com

Contents

Chapt er . About This Guide

Notational Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Related Publications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Symbol Support Center. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Warranty Coverage and Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .viii

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .viii

Chapter 1. Setti n g Up th e LS 2100

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

Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Setting Up the LS 2100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

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

Switching Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

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

Chapter 2. Scanning with the LS 2100

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

Scanning with the LS 2100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Aiming the Scanner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

LS 2100 Decode Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Chapt er 3. Maint en ance and Sp ecifications

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

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

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

iii

LS 2100 Product Reference Guide

Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Standard Accessories:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

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

LS 2100 Signal Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

Glossary

iv

About This Guide

The LS 2100 Undecoded S canner P roduct Refe rence Guide p rovi de s ge ner al in stru ct ion s fo r the se tup ,

programming, operation, troubleshooting, and maintenance of the LS 2100 scanner.

Notational Conventions

The followin g conventions are used in th is document:

!

Bullets (!) indicate:

action items

"

lists of alte rnative s

"

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

!

LS 2100 Series Quick Reference Guide p/n 70-32817-xx

!

LS 2104 Product Reference Guide p/n 70-32820-xx

!

LS 2106 Product Reference Guide p/n 70-32821-xx

Service Information

If you have a problem with your equipment, contact the Symbol Support Center for your region. See

page vi 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 prob lem

is symbol readability, the Support Center will request samples of your bar codes for analysis at our

plant.

v

LS 2100 Product Reference Guide

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

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

shipment if the approved shipping container is not used. Shipping the units
improperly can possibly void the warranty. If the original shipping container
was not kept, contact Symbol to have another sent to you.

Symbol Support Center

For service information, warranty information or technical assistance conta ct or call the Symbol
Support Center in

:

Symbol Technologies, Inc.
One Symbol Plaza
Holtsville, New Yo rk 11742-1300
1-800-653-5350

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

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

Symbol Technologies AS
Gydevang 2,
DK-3450 Allerod, Denmark
7020-1718 (Inside Denmar k)
[phone] (Outside Denmark)

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

United States

United Kingdom

Australia

Denmark

Finland

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

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

Symbol Technologies Austria GmbH
Prinz-Eugen Strasse 70
Suite 3

2.Haus, 5.Stock
1040 Vienna, Austria
1-505-5794 (Inside Austria)
[phone] (O utside Austr ia)

Contact your local distributor or call
[phone]

Symbol Technologies France
Centre d'Affaire d'A ntony
3 Rue de la Re naissance
92184 Antony Cedex, France
01-40-96-52-21 (Inside France)
[phone] (Outside France)

Europe/Mid-Ea st Dis t ribut or Operations

Canada

Asia/Pacific

Austria

France

vi

About This Guide

Symbol Technologies GmbH
Waldstrasse 68
D-63128 Dietzenba ch, Germa ny
6074-49020 (Ins ide Germa ny)
[phone] (Outside Germany)

7900 Glades Road
Suite 340
Boca Raton, Flor ida 33434 USA
1-800-347-0178 (Insi de United States)
[phone] (O utside Uni ted States)

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

Symbol Tech nologies Africa Inc.
Block B2
Rutherford Estate
1 Scott Stre e t
Waverly 2090 Johannesburg
Republic of South Africa
11-4405668 (Ins ide Sout h Africa)
[phone] (Outside South Africa)

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

Germany

Latin America Sales Support

Netherlands

South Africa

Sweden

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

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] (Outs ide Mexico )

Symbol Technologies
Trollasveien 36
Postboks 72
1414 Trollasen, Norway
66810600 (Inside Norway)
[phone] (Outside Norway)

Symbol Technologies 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)

Italy

Mexico

Norway

Spain

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

for service.

Warranty

Symbol T echnologies, Inc (“Symbol”) manufac tures its hardware products in accordanc e with industry-

standard practices. Symbol warrants that for a period of twelve (12) months from date of shipment,

products will be free from defects in materials and workmanship.

-vii

LS 2100 Product Reference Guide

This warranty is provided to the original owner only and is not transferable to any third party. It shall
not apply to an y produc t (i) which has been repai red or altered unless done or approved by Symbol, (ii)
which has not been maintained in accordance with any operating or handling instructions supplied by
Symbol, (iii ) w hich has been su bjected to unusual physical or electrical stress, misuse, abuse, power
shortage, negligence or accident or (iv) which has bee n used other than in accor dance with the product
operating and hand ling instructions. P reventive maintenanc e is the responsibility of customer and is no t
covered under this warranty.

Wear items and accessories having a Symbol serial number, will carry a 90-day limited warranty. Non­serialized items will carry a 30-day limited warranty.

Warranty Coverage and Procedure

During the warranty period, Symbol will repair or replace defective products returned to Symbol’s
manufacturing plant in the US. For warranty service in North America, call the Symbol Support Center
at 1-800-653-5350. International customers should contact the local Symbol office or support center.
If warranty service is required, Symbol will issue a Return Ma teria l Authorization Number. Products
must be shipped in the original or comparable packaging, shipping and insurance charges prepaid.
Symbol will ship the repaired or replacement product freight and insurance prepaid in North America.
Shipments from the US or other locations will be made F.O.B. Symbol’s manufacturing plant.

Symbol will use new or refurbished parts at its discretion and will own all parts removed from repaired
products. Customer wil l pay for the replacement product in case it does not return the replaced product
to Symbol within 3 days of receipt of the replace ment product. The proc ess 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 f ull responsibility for its softwa re 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 Servi ce organization offers an array of service plans, such as on-site, depot, or phone

support, that can b e implemented t o meet custom er’ s special opera tional requirements and are availabl e
at a substantial discount during warranty period.

General

Except for the warranties stated above , Symbol disclaims all warranties, express or imp lied, on products
furnished hereunde r, including without limit ation i mp lie d wa rra nt ies of merchantability and fitne ss for
a parti cul ar purp os e. The stat ed e xp res s warr an tie s are in lie u of al l oblig a tions or liab iliti es on pa rt 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 liabilit y for damages to buyer or others resulting from the u se of any product, 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 conseque ntial
damages, so the proceeding exclusion or limitation may not apply to you.

viii

Chapter 1

Setting Up the LS 2100

Introduction

The LS 2100 Series of hand-held laser scanners offers excellent performance in retail and light

industrial applications. Advanced ergonomic desi g n e nsures comfortable use for extended

periods of time.

The LS 2100 Series hand-held scanner is based on the SE 1200 Series scan engine with Visible

Laser Diode (VLD) and mylar

scanner a wider decode zone, greater depth of field, and a visible scan beam. This series reads

color bar codes and symbols printed on all substrates. See the LS 2100 Decode Zone on page

2-4.

Here’s what each member of the LS 2100 family offers you:

!

LS 2100 - The aggressiveness of this discrete scanner is typical of the
LS 2100 family’s performance. It connects easily to, and is programmed by, the

®

scan element. This state of the art technology gives the

Figure 1-1. LS 2100 Scanner

1-1

LS 2100 Product Reference Guide

complete line of Symbol Technologies portable terminals and the full range of
SYMBOL and OmniLi nk

!

LS 2104 - With a simple cable change, this scanner is compatible with:

RS 232C asynchronous terminals

"

SynapseTM “Smart Cables”, which allow you to connect to:

"

IBM 4683/4, 4693/4 series of terminals

"

All leading OCIA terminals, including NCR, Nixdorf, and ICL terminals

"

Popular OCR terminals, such as Fujitsu and ICL.

"

Wand Emulation terminals

"

Dual RS-232 Hosts

"

!

LS 2106 - The LS 2106 scanner is a keyboard “wedge” interface which adds efficient,
reliable bar code read i ng to your PS/ 2or AT/XT terminal. Since entered sc an data is
transmitted as keystro kes, no software changes to the host sy stem are necessary . Th e
scanner contains on-board discrete keyboard wedge communications for connecting
to asynchronous terminals and host systems. It can also accommodate any of the
Synapse™ “Smart Cables” which allows you to connect to a wide variety of host
systems. Some installations require one cable; others require additional adapters
between the keyboard, the PC, and the y-cable.

All of the LS 2100 series scan automatically at the rate of 36 scans per second. For decode
capability, see T echnical Specifications on page 3-3.

TM

interf ace contro lle rs.

Audience

The intended a udience f or this ma nual is personnel p erformin g installation/setup and
programming of LS 2100 scanners.

Unpacking

Remove the LS 2100 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 vi.
KEEP THE PACKING. It is the approved shipping container and should be used if you ever
need to return your equipment for servicing.

1-2

Setting Up the LS 2100

Setting Up the LS 2100

Installing the Cable

Insert the cable into the receptacle on the bottom of the scanner, as shown below:

Figure 1-2. Installing the Cable

Switching Cab le s

Different cables are required for different hosts. To change the scanner cable:

1. Press the tab on the cable with a small screwdriver.

2. Pull the cable out of the receptacle on the bottom of the scanner.

1-3

LS 2100 Product Reference Guide

3. Insert a new cable in the receptacle. Press the cable firmly into the receptacle until
you hear a click.

Connecting to a Host

Plug the connector at the end of the LS 2100 cable into the appropriate port on the Symbol
interface controller or portable terminal. Refer to the controller user documentation for full
details.

LS 2100

Portable
Data
Ter mi na l

Interface
Controller

Figure 1-3 . Connecting to a Host

LS 2100

Host
Computer

1-4

Chapter 2

Scanning with the LS 2100

Introduction

This chapter covers the proper techniques for scanning bar codes and the decode zone for the
LS 2100 scanner.

Scanning with the LS 2100

1. Before you use the scanner, make sure all cable connections are secure.

2. Make sure the bar code is in the correct scanning range. Aim and press the trigger;

the scan beam lights and an orange light illuminates at the rear of the scanner. The
scanner has read the symbol when:

You hear a beep.

"

The orange li gh t turns gre en.

"

The laser turns off.

"

2-1

LS 2100 Product Reference Guide

Figure 2-1. Holding the Scanner

Aiming the Scanner

Hold the scanner at an angle. 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 strong light can “blind” the scanner and make decoding difficult. The ar ea where
specular reflection occurs is known as a “dead zone”.

°

You can tilt the scanner up to 55
practice quickly shows what tolerances to work within.

2-2

forward or back and achieve a successful decode. Simple

Figure 2-1. Aiming the Scanner

Scanning with the LS 2100

!

Scan the Entire Symbol

The scan beam must cross every bar and space on the symbol (as in the left bar

"

code below).
The larger the symbol, the farther away you should hold the scanner.

"

Hold the scanner closer for symbols with bars that are close together.

"

Right Wrong

What Does The Beep Mean?

When you hear 1 beep (short hig h tone) it means data has been decoded successfully. If any
other beeps are heard, contact the technical person in charge of scanning.

When the symbol has been decoded, you will hear a short, h i gh-tone b eep, and the green
decode LED will light.

2-3

LS 2100 Product Reference Guide

LS 2100 Decode Zone

2-4

Chapter 3

Maintenance and Specifications

Introduction

This chapter covers the appropriate methods for maintaining and the technical specifications
for the scanner.

Maintenance

Cleaning the exit window is the only maintenance required. A dirty window may affect
scanning accuracy.

!

Do not allow any abrasive material to touch the window.

!

Remove any dirt particles with a damp cloth.

!

Wipe the window using a tissue moistened with ammonia/water.

!

Do not spray water or other cleaning liquids directly into the window.

!

Do not remove the nose of the scanner.

Troubleshooting

If, after following the operating instructions, the scanner does not work:

!

Check the system power.

!

Make sure the controller is programmed to decode bar codes of the symbology you
are scanning.

!

Check for loose cable connections.

3-1

LS 2100 Product Reference Guide

!

Make sure the symbol is not defaced.

!

Try scanning test symbols of the same code type.

If after performing these checks the symbol still does not scan, contact your distributor or call
the Symbol Support Center. See page vi for the telephone number.

Accessories

Standard Accessories:

Descrip tion Part Number

LS 21xx Series Quick Reference Guide 70-32817-xx
LS 2100 Undecoded Scanner Product

Reference Guid e
Shipping Box 50-01400-184

Cables

70-32818-01

Description Part Number

Standard (9-pin D Connector - Female) Straight Cable 25-06751-01
Coil Cable for PDT 3300 (9-pin D Connector) 25-05611-03
RJ-41 Connector for PDT 1510 25-06859-01
Coil Cable for UDI Portable Data Terminals (DB-9 Female Connector) 25-08185-01

3-2

Maintenance and Specifications

Optional Accessories

Optional accessories, supplied at extra cost, include additional units of any item listed above
and the following items:

Descri p tion Part Nu mb er

Hands-free Stand-Free
Standing

Desk-mount Stand 21-33323-01

Technical Specifications

Item Description

Power Requirements 4.75 to 14 VDC; 99 mA @ 5 VDC Typical
Decode Capability Determined by interface controller
Decode Depth of Field Maximum typical working distance is 11 in. (100%

Scan Repetition Rate Approximately 36 scans/sec (bidirectional)
Roll Tolerance ± 55° min. (from normal)
Pitch Tolerance ± 50° (from normal)
Yaw Tolerance ± 35° min (from normal)
Print Contrast Minimum 20% minimum reflectan c e di fferentia l, measured at

Ambient Light Immunity Immune to direct exposure to normal office and

21-33324-01

UPC/EAN); minimum element width resolution is 5.5
mils

675 nm.

factory lighting conditions, as well as direct exposure
to sunlight.

Durability 5 ft (152 cm) drops to concrete
Operating Temperature 32° to 104°F (0° to 40°C)
Storage Temperature -40° to 140° (-40° to 60°C)
Straight Cable Length 6 ft (183 cm)

3-3

LS 2100 Product Reference Guide

Item Description

Weight (without cable) 5.5 oz. (170 gm)
Dimensions:
Height 6.7 in (167 mm)
Width 2.8 in (70 mm)
Depth 3.4 in (85 mm)

3-4

Maintenance and Specifications

LS 2100 Signal Descriptions

The following signal descriptions apply to the connection between the scanner and the cable,
and are for reference only.

Pin Signal Name Function

2Power This pin is to be connected t o the 4.75 to 14 V (4.75 to 14

VDC) power supply . Wh en pin 4 is high, current to operate
the scanner is supplied by pin 1,2 (99 mA @ 5 VDC).
When pin 4 is at ground pote ntial, current into pin 1 and
2 is less than 50 µA.

3 Ground Power supply and signal ground return line.
4Enable When the decode logic senses that the trigger has been

pulled, this input must be driven high (+2.4 to +14 V into
a 10 kilohm load) to power-u p the scanner electronics and
turn on the laser and resonating harmonic scan element.
As soo n as a deco de is s uccessfu lly com pleted , if no d ecode
occurs after about 1 second, or when the trigger is
released, this input should float or be driven to ground
(less than 0.4 V) to power-dow n the scanner.

5 Start of Scan This output synchronizes the decode logic with the

scanner. The output is high when the beam sweeps in one
direction and l ow when it sweeps in t he opposite dir ection.
This open collector signal is capable of sinking 25 mA. An
external pullup resistor may be connected to any voltage
up to 20 V. The frequency of scans is 36 scans/sec.

6 Trigger Switch This output is grounded when the trigger is pulled and

floating w hen the trig ger is release d. The decode log ic uses
this sw itc h to s ig nal tha t th e ope ra tor wishes t o re ad a b ar
code.

7 Decode LED This input to the scanner controls the green decode

indicator LED and sounds the beeper. Applying a voltage
of 2.5 V or greater will light the LED. Max imum vol tage
that c an be applied to th i s input is 15 V. This current
decreases as the voltage is lowered. The decode LED can
be activated with this input even when the scanner is not
operating, providing power is present at pin 2.

3-5

LS 2100 Product Reference Guide

Pin Signal Name Function

8 Digitized Bar Pattern Output from the scanner is electrically identical to pin 5,

providing a series of pulses with widths proportional to the
widths of the bar code elements being scanned. A low
output represents a bar, and a high output represents a
space. The frequency of the pulses depends on the density
of the symbol being sca nned.

.

PIN 1PIN 10

3-6

Figure 3-1. 10-pin Connector

Glossary

Aperture The opening in an optical system defined by a lens or baffle that

establishes the field of view.

ASCII American Standard Code for Information Interchange. A 7 bit-plus-

parity code representing 128 letters, numerals, punctuation marks,
and control charac ters. It is a standard data transmission code in the
U.S.

Autodiscrimination The ability of an interface controller to determine the code type of a

scanned bar code. After this determination is made, the information
content can be decoded.

Bar The dark element in a printed bar code symbol.
Bar Code Density The number of characters represented per unit of measurement

(e.g., c ha r a cters per in ch).

Bar Height The dimension of a bar measured perpendicular to the bar width.
Bar Width Thickness of a bar measured f rom the edge c losest to t he symbol start

character to the trailing edge of the same bar.

Baud Rate A measure of the data flow or number of signaling events occurring

per second. When one bit is the standard "event," this is a measure of
bits per second (bps). For example, a baud rate of 50 means
transmission of 50 bits of data per second.

Bit Binary digit. One bit is the basic unit of binary information. Generally,

eight consecutive bits compose one byte of data. The pattern of 0 and
1 values within the byte determines its meaning.

Glossary-1

LS 2100 Product Reference Guide

Byte On an addressable boundary, eight adjacent binary digits (0 and 1)

combined in a pattern to represent a specific character or numeric
value. Bits are numbered from the right, 0 through 7, with bit 0 the
low-order bit. One byte in memory can be used to store one ASCII
character.

CDRH Center for Devices and Radiological Health. A federal agency

responsible for regulating laser product safety. This agency specifies
various laser operation classes based on power output during
operation.

CDRH Class 1 This is the lowest power CDRH laser classification. This class is

considered intrinsicall y safe, even if all laser outp ut were dir ected into
the eye's pupil. There are no special operating procedures for this
class.

CDRH Class 2 No additional software mechanisms are needed to conform to this

limit. Laser operation in this class poses no danger for unintentional
direct human exposure.

Character A pattern of bars and spaces which either directly represents data or

indicates a control function, such as a number, letter, punctuation
mark, or communications control contained in a message.

Character Set Those characters available for encodation in a particular bar code

symbology.

Check Digit A digit used to verify a corr ect symbol decod e. The scanner insert s the

decoded data into an arithmetic formu la and checks that th e resulting
number matches the encoded check digit. Check digits are required
for UPC but are optional for other symbologies. Using check digits
decreases the chance of substitution errors when a symbol is decoded.

Codabar A discrete self-checking code with a character set consisting of digits

0 to 9 and six additional characters: ( - $ : / , +).

Code 128 A high density symbology which allows the controller to encode all

128 ASCII characters without adding extra symbol elements.

Code 3 of 9 (Code 39) A versatile and widely used alphanumeric bar code symbology with

a set of 43 character types, including all uppercase letters, numerals
from 0 to 9, and 7 special characters (- . / + % $ and space). The code
name is derived from the fact that 3 of 9 elements representing a
character are wide, while the remaining 6 are narrow.

Code 93 An industrial symbology compatible with Code 39 but offering a full

character ASCII set and a higher coding density than Code 39.

Glossary-2

Glossary

Code Length Number of data characters in a bar code between the start and stop

characters, not including those characters.

Continuous Code A bar code or symbol in which all spaces within the symbol are parts

of characters. There are no intercharacter gaps in a continuous code.
The absence of gaps allows for greater information density.

Dead Zone An area within a scanner's field of view, in which specular reflection

may prevent a successful decode.

Decode To recognize a bar code symbology (e.g., UPC/EAN) and then

analyze the content of the specific bar code scanned.

Decode Algorithm A decoding scheme that converts pulse widths into data

representation of the letters or numbers encoded within a bar code
symbol.

Depth of Field The range between minimum and maximum distances at which a

scanner can read a symbol with a certain minimum element width.

Discrete Code A bar code or symbol in which the spaces between characters

(intercharacter gaps) are not part of the code.

Discrete 2 of 5 A binary bar code symbology r epr esenting each characte r by a group

of five bars, two of which are wide. The location of wide bars in the
group determines which character is encoded; spaces are
insignificant. Only numeric characters (0 to 9) and START/STOP
characters may be encoded.

EAN European Article Number. This European/International version of

the UPC provi des its own coding format and symbology s tandards.
Element dimensions are specified metrically. EAN is used primarily
in retail.

Element Generic term for a bar or space.
Encoded Area Total linear d im en si on occ up ie d b y a ll cha rac ter s o f a cod e pattern,

including start/stop characters and data.

Host Computer A computer that serves other terminals in a network, providing such

services as computation, databa se access, super visory pr ograms, and
network control.

IEC International Electrotechnic al Commission. This international agency

regulates laser safety by specifying various laser operation classes
based on p ower output duri n g ope rati o n .

Glossary-3

LS 2100 Product Reference Guide

IEC (825) Class 1 This is the lowest power IEC laser classification. Conformity is

ensured through a software restriction of 120 seconds of laser
operation within any 1000 second window and an automatic laser
shutdown if the scanner's oscillating mirror fails.

Intercharacter Gap The space between two adjacent bar code characters in a discrete

code.

Interl eave d Bar Cod e A bar code in which characters are paired together, using bars to

represent the first character and the intervening spaces to represent
the second.

Inter l eaved 2 of 5 A binary bar code symbology representing character pairs in groups

of five bars and five interleaved spaces. Interleaving provides for
greater information density. The location of wide elements (bar/
spaces) within each group determines which characters are encoded.
This continuous code type uses no intercharacter spaces. Only
numeric (0 to 9) and START/STOP characters may be encoded.

LASER - Light
Amplification by
Stimulated Em ission
of Ra diat ion

Laser Diode A gallium-arsenide semiconductor type of laser connected to a power

LED Indicator A semiconductor diode (LED - Light Emitting Diode) used as an

MIL 1 mil = 1 thousandth of an inch.
Misread

(Misdecode)

Nominal The exact (or ideal) intended value for a specified parameter.

Nominal Size Standard size for a bar code symbol. Most UPC/EAN codes can be

Parameter A variable that can have different values assigned to it.

The laser is an intense light source. Light from a laser is all the same
frequency, unlike the output of an incandescent bulb. Laser light is
typically coherent and has a high energy density.

source to genera te a laser beam. This l aser typ e is a c ompact sour c e of
coherent light.

indicator, often in digital displays. The semiconductor uses applied
voltage to produce light of a certain frequency determined by the
semiconductor's particular chemical composition.

A condition which occurs when the data output of a reader or
interface controller do es not agree with the data encoded within a bar
code symbol.

T ol erances ar e specifi ed as positive and negative deviati ons fr om this
value.

used over a range of magnifications (e.g., from 0.80 to 2.00 of
nominal).

Glossary-4

Glossary

Perce n t D e co d e The average probability that a single scan of a bar code would result

in a successful decode. In a well-designed bar code scanning system,
that probability should approach near 100%.

Print Co ntrast Si gnal
(PCS)

Programming Mode The state in which a scanner is configured for parameter values. See

Quiet Zo ne A clear space, containing no dark marks, which precedes the start

Reflectance Amount of light returned from an illuminated surface.
Resolution The narrowest element dimension which can be distinguished by a

Scan Area Area intended to contain a symbol.
Scanner An electronic device used to scan bar code symbols and produce a

Measurement of the contrast ( brightness difference) between the bars
and spaces of a symbol. A minimum PCS value is needed for a bar
code symbol to be scannable. PCS = (RL - RD) / RL, where RL is the
reflectanc e fac tor o f th e bac k grou nd a nd RD th e ref lecta n ce fac tor of
the dark bars.

SCANNING MODE.

character of a bar code symbol and follows the stop character.

particular reading device or printed with a particular device or
method.

digitize d pattern that co r resp on ds to the bars and spaces of the
symbol. Its three main components are:

1. Light source (laser or photoelectric cell) - illuminates a bar code.

2. Photodetector - registers the difference in reflec ted light (more light
reflected from spaces).

3. Signal conditioning circuit - transforms optical detector output into
a digitized bar patter n.

Scanning Mode The scanner is energized, programmed, and ready to read a bar code.
Scanning Sequence A method of programming or configuring parameters for a bar code

reading system by scanning bar code menus.

Self-Checking Code A symbology that uses a checking algorithm to detect encoding errors

within the characters of a bar code symbol.

Space The lighter element of a bar code formed by the backgr ound between

bars.

Specular Reflection The mirror-like r eflection of light fro m a surface, which can “blind” a

scanner.

Glossary-5

LS 2100 Product Reference Guide

Start/Stop Character A pattern of bars and spaces that provides the scanner with st art and

stop reading instructions and scanning direction. The start and stop
characters are normally to the left and right margins of a horizontal
code.

Substrate A foundation materia l on which a substance or image is placed.
Symbol A scannable unit that encodes data within the conventions of a certain

symbology, usually includi ng st art/ stop charact ers, quiet zon es, data
characters, and check characters.

Symbol Aspec t Rati o The ratio of symbol height to symbol width.
Symbol Height The distance between the outside edges of the quiet zones of the first

row and t he last row.

Symbol Length Length of symbol me a sured f rom the be ginn i ng of th e qu i et zon e

(margin) adjacent to the start character to the end of the quiet zone
(margin) adj ace nt to a stop character.

Symbology Th e str uctu r al rules and conv entio n s for representi n g d ata wi thi n a

particular bar code type (e.g. UPC/EAN, Code 39).

Tolera nce Allowable deviation from the nominal bar or space width.
UPC Universal Product Code. A relatively complex numeric symbology.

Each charact er consis ts of two bar s an d t wo spaces , each o f w hich can
be any of four widths. The standard symbology for retail food
packages in the United States.

Visible Laser Diode
(VLD)

Glossary-6

A solid state device which produces visible laser light. Laser light
emitted from the diode has a wavelength of 670 to 680 nanometers.

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