LS 2106 RS-232/Synapse/Keyboard Wedge Scanner
Product Reference Guide
Click on red text at any location in the manual to jump to the
specified chapter, topic, or reference.
About This Manual
Table of Contents
Glossary
Copyright
70-32821-01
Revision B
February, 1998
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Accessories
Standard Accessories
Cables
Introduction
Beeper Volume
Laser On Time
Power Mode
Transmit Code 39 Check Digit
Do Not Transmit Code 39 Check Digit
Enable/Disable Code 39 Full ASCII
Code 39 Buffering (Scan & Store)
Buffer Data
Clear Transmission Buffer
Transmit Buffer
Overfilling Transmission Buffer
vi
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CLSI Editing
NOTIS Editing
Scan Data Transmission Format
Host Interfaces
National Keyboard Types
Fast Transmit
Intercharacter Delay
Numeric Bar Codes
Cancel
Keyboard Maps
ASCII Character Set
A-1
vii
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About This Guide
The LS 2106 Product Reference Guide provides general instructions for setup, programming,
operation, troubleshooting, and maintenance of the LS 2106 scanner.
Notational Conventions
The following conventions are used in this document:
t
Bullets (•) indicate:
s
s
s
action items
lists of alternatives
lists of required steps that are not necessarily sequential
t
Sequential lists (e.g., those that describe step-by-step procedures) appear as
numbered lists.
Related Publications
t
t
t
LS 2100 Series Q uick Reference Guide
LS 2100 Product Reference Guide
LS 2104 Product Reference Guide
p/n 70-32817-xx
p/n 70-32818-xx
p/n 70-32820-xx
Service Inform ation
If you have a problem with your equipment, contact the Symbol Support Center. 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 symbol readability, the Support Center will request samples of your bar
codes for analysis at our plant.
ix
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Chapter 1
Setting Up the LS 2106
Introduction
industrial applications. Advanced ergonomic design ensures comfortable use for extended
periods of time.
The LS 2100 Series hand-held scanner is based on the SE 1200 Series scan engine, mylar®
scan element and the Visible Laser Diode (VLD). This state of the art technology gives the
scanner a wider decode zone, greater depth of field, and a visible scan beam. This model reads
color bar codes and symbols printed on all substrates. See the LS 2106 Decode Zone on page
2-4.
Figure 1-1. LS 2106 Scanner
Here’s what each member of the LS 2100 family offers you:
t
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
1-1
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LS 2106 Product Reference Guide
complete line of Symbol Technologies portable terminals and the full range of
TM
Symbol and OmniLink
interface controllers.
t
LS 2104 - With a simple cable change, this scanner is compatible with:
s
s
RS 232C asynchronous terminals
TM
Synapse
“Smart Cables”, which allow you to connect to:
s
s
Wand Emulation terminals
IBM 4683/4, 4693/4 series of terminals
All leading OCIA terminals, including NCR, Nixdorf, and ICL terminals.
s
s
Dual RS-232 Hosts
Popular OCR terminals, such as Fujitsu and ICL.
t
LS 2106 - The LS 2106 scanner is a keyboard “wedge” interface which adds efficient,
reliable bar code reading to your PS/2 or AT/XT terminal. Since entered scan data is
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 Technical Specifications on page 3-3.
Audience
The intended audience for this manual is personnel performing installation/setup and
programming of LS 2106 scanners.
Unpacking
Remove the LS 2106 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 x.
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
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Setting Up the LS 2106
Setting Up the LS 2106
Installing the Cable
Insert the cable into the receptable on the bottom of the scanner, as shown below:
Figure 1-2. Installing the Cable
Switching Cables
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.
3. Insert a new cable in the receptacle. Press the cable into the receptacle until you hear
a click.
1-3
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LS 2106 Product Reference Guide
Connecting to a Host
Plug the connector at the end of the LS 2106 cable into the appropriate port on the Symbol
interface controller or portable terminal. Refer to the controller user documentation for full
details.
Host
LS 2106
LS 2106
Controller
Host Connection through a Controller
PDT
Connecting to a PDT
Host
LS 2106
Host
LS 2106
Synapse
Sm art
Cable
Synapse
Sm art
Cable
Synapse
Adapter
Cable
Synapse
Adapter
Cable
Power Supply
(As Req’d_
Power
Supply
(As Required)
O CIA via Synapse
RS-232 via Synapse Adapter Cable
LS 2106
LS 2106
IBM 4683/84/93/94 C
Cash Register
Host
Synapse
Sm art
Cable
Synapse
Adapter
Cable
Power Supply
(As Required)
IBM via Synapse Adapter Cable
Direct RS-232 Connection
Host
LS 2106
Host
LS 2106
Synapse
Sm art
Cable
Power Supply
(As Required)
Keyboard Wedge via Synapse
Keyboard Wedge
Figure 1-3. Connecting to a Host
1-4
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Chapter 2
Scanning with the LS 2106
Introduction
This chapter covers the proper techniques for scanning bar codes and the decode zone for the
LS 2106 scanner.
Scanning with the LS 2106
Before you can use the scanner, it should have already been installed and programmed. If not,
refer to Chapter 4, Parameter Menus for instructions on programming your scanner. If you
need assistance, contact your local supplier or Symbol Techologies.
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:
s
s
s
You hear a beep.
The orange light turns green.
The laser turns off.
2-1
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LS 2106 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 area where
specular reflection occurs is known as a “dead zone”.
You can tilt the scanner up to 55° forward or back and achieve a successful decode. Simple
practice quickly shows what tolerances to work within.
2-2
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Scanning with the LS 2106
t
Scan the Entire Symbol
s
The scan beam must cross every bar and space on the symbol (as in the left bar
code below).
s
s
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
012345
012345
W hat Does The Beep Mean?
When you hear 1 beep (short high 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 successfully decoded, you will hear a short, high-tone beep, and
the green decode LED will light.
For more specific information on the meanings of the various beeper sounds, refer to Beeper
Indications on page 3-7.
2-3
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LS 2106 Product Reference Guide
LS 2106 Decode Zone
2-4
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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.
t
t
t
t
t
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:
t
t
Check the system power.
Make sure the controller is programmed to decode bar codes of the symbology you
are scanning.
t
Check for loose cable connections.
3-1
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LS 2106 Product Reference Guide
t
t
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 x for the telephone number.
Accessories
Standard Accessories:
Description
Part Number
LS 2100 Series Quick
Reference Guide
70-32817-xx
LS 2106 Product
Reference Guide
70-32821-xx
50-01400-184
Shipping Box
Cables
Description
PS/2 “Y” Scanner Cable
PS/2 to AT/XT Adapter Connectors
IBM SureOne PS2 Cable
Synapse Adapter Cable
110V Power Supply
Part Number
25-31828-01
KT-32903-01(Set)
25-17359-01
25-31617-01
50-14000-008
50-14000-009
220/240V Power Supply
3-2
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Maintenance and Specifications
Optional Accessories
Optional accessories, supplied at extra cost, include additional units of any item listed above
and the following items:
Description
Part Number
Hands-Free Stand-free
standing
21-33324-01
Desk-Mount Stand
21-33323-01
Technical Specifications
Item
Description
Power Requirements
4.75 to 5.25 VDC; 180 mA @ 5 VDC Typical
Low Power: 20µ maximum
Decode Capability
UPC/EAN,UPC/EAN with supplementals, UCC/EAN
128, Code 39 Full ASCII, Code 128, Codabar,
Interleaved 2 of 5, Discrete 2 of 5, Code 93, MSI/
Plessey.
Decode Depth of Field
Maximum typical working distance is 11.0 in. (100%
UPC/EAN); minimum element width resolution is 5.5
mils
Scan Repetition Rate
Skew Tolerance
Pitch Tolerance
Yaw
Approximately 36 scans/sec (bidirectional)
± 55˚ min. (from normal)
± 50° (from normal)
± 35° at 6 in. on 100% UPC/EAN
Print Contrast Minimum
20% minimum reflectance differential, measured at
675 nm.
Ambient Light Immunity
Immune to direct exposure to normal office and
factory lighting conditions, as well as direct exposure
to sunlight.
Durability
5 ft (152 cm) drops to concrete
32° to 104°F (0° to 40°C)
-40˚ to 140˚ (-40˚ to 60°C)
Operating Temperature
Storage Temperature
3-3
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LS 2106 Product Reference Guide
Item
Description
Straight Cable Length
6 ft (183 cm)
Weight (without cable)
Dimensions:
Height
5.5 oz. (170 gm)
6.7 in (167 mm)
2.8 in (70 mm)
3.4 in (85 mm)
Width
Depth
3-4
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Maintenance and Specifications
LS 2106 Signal Descriptions
The following signal descriptions apply to the connection between the scanner and the cable,
and are for reference only.
Table 3-1. Signal Descriptions
Pin
2
Signal Name
VBATT
Function
Input power.
3
GROUND
Power supply input ground pin and reference for both
output signals. It must be capable of sinking all return
current.
4
Terminal Clock
Bidirectional clock signal used to communicate between
the host terminal and the scanner or keyboard.
6
7
8
Synapse Data
Synapse Clock
Terminal Data
Data line for Synapse communication.
Clock line for Synapse communication.
Bidirectional data signal used to communicate between the
host terminal and the scanner or keyboard
9
Keyboard Data Clamp Active-low output data signal used to communicate from
the scanner to the keyboard.
10
Keyboard Clock
Clamp
Active-low output clock signal used to communicate from
the scanner to the keyboard.
3-5
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LS 2106 Product Reference Guide
PIN 10
PIN 1
Figure 3-1. 10-pin Connector
3-6
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Maintenance and Specifications
Beeper Indications
Standard Use
Beeper Sequence
Indication
Short high tone
A bar code symbol was decoded (if decode beeper is
enabled).
4 Beeps - long low tone
A transmission error has been detected in a scanned
symbol. The data is ignored. This will occur if a unit is
not properly configured. Check option settings.
5 Beeps - low tone
Lo/hi/lo tone
Convert or format error
ADF transmit error
Hi/hi/hi/lo tone
RS-232 receive error
Parameter Menu Scanning
Short high tone
Correct entry scanned or correct menu sequence
performed.
Lo/hi tone
Input error, incorrect bar code or “Cancel” scanned,
wrong entry, incorrect bar code programming sequence;
remain in program mode.
Hi/lo tone
Keyboard parameter selected. Enter value using bar code
keypad.
Hi/lo/hi/lo tone
Successful program exit with change in the parameter
setting.
Code 39 Buffering
Hi/lo tone
New Code 39 data was entered into the buffer.
Code 39 buffer is full.
3 Beeps - long high tone
Lo/hi/lo tone
The buffer was erased, or there was an attempt to
transmit an empty buffer. When the Code 39 buffer was
empty, the scanner read a command to clear or to
transmit a Code 39 buffer.
4 Beeps - long low tone
Lo/hi tone
Error in data transmission.
A successful transmission of buffered data.
3-7
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Chapter 4
Parameter Menus
Introduction
The LS 2106 is shipped with the settings shown in the Default Parameters beginning on page
4-2. These default values are stored in non-volatile memory and are preserved even when the
scanner is powered down. You can change these default values by scanning the appropriate
bar codes included in this manual. These new values replace the standard default values in
memory. The default parameter values can be recalled by scanning the SET ALL DEFAULTS
bar code on page 4-7.
The scanner automatically identifies the host type on power-up. It makes this determination
provided the host is powered-up before the scanner is attached to it. The following table lists
the defaults for all parameters. If you wish to change any option, scan the appropriate bar
code(s).
4-1
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LS 2106 Product Reference Guide
Default Param eters
Table 4-1. Default Param eters
Parameter
Default
Page
Number
Set Default Parameter
All Defaults
High
4-7
4-8
Beeper Volume
Laser On Time
3.0 seconds
Continuous
Enable
4-9
Power Mode
4-10
4-11
4-12
4-13
4-14
Beep After Good Decode
Transmit “No Read” Message
Decode Redundancy
Autodiscriminate Response Time
UPC/EAN
Disable
Level 0
1 second
UPC-A
Enable
Enable
4-15
4-15
4-16
4-16
4-17
4-18
4-19
4-19
4-20
4-21
UPC-E
EAN-8
Enable
EAN-13
Enable
Bookland EAN
Disable
Decode UPC/EAN Supplementals
Transmit UPC-A Check Digit
Transmit UPC-E Check Digit
UPC-A Preamble
UPC-E Preamble
Ignore
Enable
Enable
System Character
System Character
4-2
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Parameter Menus
Table 4-1. Default Param eters (Continued)
Parameter
Default
Page
Number
Convert UPC-E to A
EAN-8 Zero Extend
Disable
Disable
EAN13
4-22
4-23
4-24
EAN Zero Extend Code Type
Code 128
Code 128
Enable
Enable
4-25
4-26
UCC/EAN-128
Code 39
Code 39
Enable
Disable
Disable
Disable
Disable
4-27
4-28
4-29
4-30
4-31
Code 39 Check Digit Verification
Transmit Code 39 Check Digit
Code 39 Full ASCII Conversion
Buffer Code 39
4-3
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LS 2106 Product Reference Guide
Table 4-1. Default Param eters (Continued)
Parameter
Default
Page
Number
Code 93
Code 93
Disable
4-34
Interleaved 2 of 5
Interleaved 2 of 5
Enable
14
4-35
4-36
4-37
Set Length(s) for I 2 of 5
Convert I 2 of 5 to EAN 13
Discrete 2 of 5
Disable
Discrete 2 of 5
Disable
12
4-38
4-39
Set Length(s) for D 2 of 5
Codabar
Codabar
Disable
Disable
Disable
4-40
4-41
4-42
CLSI Editing
NOTIS Editing
4-4
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Parameter Menus
Table 4-1. Default Param eters (Continued)
Parameter
Default
Page
Number
MSI Plessey
MSI Plessey
Disable
One
4-43
4-44
4-45
4-46
MSI Plessey Check Digits
Transmit MSI Plessey Check Digit
MSI Plessey Check Digit Algorithm
Data Options
Disable
Mod 10/Mod 10
Transmit Code ID Character
Prefix/Suffix Values
None
4-48
4-49
7013
(<CR/LF> for serial)
Scan Data Transmission Format
Data as is
4-51
4-5
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LS 2106 Product Reference Guide
Table 4-1. Default Param eters (Continued)
Parameter
Default
Page
Number
Keyboard Wedge
Host Type
IBM PC AT
North American
Enabled
4-52
4-53
4-55
4-56
National Keyboard Type
Fast Transmit
Intercharacter Delay
0
4-6
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Parameter Menus
Set Default Param eter
Scanning this bar code returns all parameters to the default values listed in Table 4-1.
beginning on page 4-2.
SET ALL DEFAULTS
4-7
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LS 2106 Product Reference Guide
Beeper Volum e
To select a beeper volume, scan the LOW VOLUME or HIGH VOLUME bar code.
LOW VO LUME
HIGH VO LUME
4-8
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Parameter Menus
Laser O n Tim e
This parameter sets the maximum time decode processing continues during a scan attempt.
It is programmable in 0.1 second increments from 0.5 to 9.9 seconds.
To set a Laser On Time, scan the bar code below. Next scan two numeric bar codes beginning
on page 4-57 that correspond to the desired time on. Single digit numbers must have a leading
zero. For example, to set a Time On of .5 seconds, scan the bar code below, then scan the “0”
and “5” bar codes. If you make an error, or wish to change your selection, scan the CANCEL
bar code on page 4-59.
LASER O N TIME
4-9
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LS 2106 Product Reference Guide
Power Mode
This parameter determines whether or not power remains on after a decode attempt. When
in low power mode, the scanner enters into a low power consumption mode to preserve
battery life after each decode attempt. When in continuous power mode, power remains on
after each decode attempt.
CO NTINUO US O N
LOW POW ER
4-10
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Parameter Menus
Beep After Good Decode
Scan this symbol if you want the unit to beep after a good decode.
BEEP AFTER GO O D DECO DE
Do Not Beep After Good Decode
Scan this symbol if you do not want the unit to beep after a good decode. The beeper still
operates during parameter menu scanning and indicates error conditions.
DO NOT BEEP AFTER GO O D DECO DE
4-11
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LS 2106 Product Reference Guide
Transm it “No Read” Message
When enabled, if a symbol does not decode, “NR” is transmitted. Any prefixes or suffixes
which have been enabled are appended around this message.
ENABLE NO READ
Do Not Transm it “No Read” Message
When disabled, if a symbol does not read, nothing is sent to the host.
DISABLE NO READ
4-12
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Parameter Menus
Decode Redundancy
Use this parameter to indicate whether the scanner must read a bar code one time (Level 0),
two times (Level 1) or three times (Level 2) before decoding it. A higher level of redundancy
ensures the accuracy of a decode in, for example, poor quality symbols.
LEVEL 0
LEVEL 1
LEVEL 2
4-13
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LS 2106 Product Reference Guide
Autodiscrim inate Response Tim e
This parameter extends the length of time during which the scanner tries to detect which host
it is connected to on power up.
Note: When connected to an LS 5700/5800, the 5-second option must be
used.
1 SECO ND (default)
5 SECO NDS
4-14
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Parameter Menus
Enable/Disable UPC-E/UPC-A
To enable or disable UPC-E or UPC-A, scan the appropriate bar code below.
ENABLE UPC-E
DISABLE UPC-E
ENABLE UPC-A
DISABLE UPC-A
4-15
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LS 2106 Product Reference Guide
Enable/Disable EAN-8/EAN-13
To enable or disable EAN-8 or EAN-13, scan the appropriate bar code below.
ENABLE EAN-8
DISABLE EAN-8
ENABLE EAN-13
DISABLE EAN-13
4-16
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Parameter Menus
Enable/Disable Bookland EAN
To enable or disable EAN Bookland, scan the appropriate bar code below.
ENABLE BO O KLAND EAN
DISABLE BO O KLAND EAN
4-17
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LS 2106 Product Reference Guide
Decode UPC/EAN Supplem entals
Supplementals are additionally appended characters (2 or 5) according to specific code
format conventions (e.g., UPC A+2, UPC E+2, EAN 8+2). Three options are available.
supplemental characters are not decoded.
If UPC/EAN without supplemental characters is selected, and the LS 2106 is presented
with a UPC/EAN plus supplemental symbol, the UPC/EAN is decoded and the
supplemental characters ignored.
An autodiscriminate option is also available. If this option is selected, choose an appropriate
Transmit UPC-A/UPC-E Check Digit value from the next page. A value of 5 or more is
recommended.
Note: In order to minimize the risk of invalid data transmission, it is recommended
that you select whether to read or ignore supplemental characters.
DECO DE UPC/EAN W ITH SUPPLEMENTALS
IGNO RE UPC/EAN W ITH SUPPLEMENTALS
AUTO DISCRIMINATE UPC/EAN SUPPLEMENTALS
4-18
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Parameter Menus
Transm it UPC-A/UPC-E Check Digit
Scan the appropriate bar code below to transmit the symbol with or without the UPC-A or
UPC-E check digit.
TRANSMIT UPC-A CHECK DIGIT
DO NOT TRANSMIT UPC-A CHECK DIGIT
TRANSMIT UPC-E CHECK DIGIT
DO NOT TRANSMIT UPC-E CHECK DIGIT
4-19
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LS 2106 Product Reference Guide
UPC-A Pream ble
Three options are given for lead-in characters for UPC-A symbols transmitted to the host
device: transmit system character only, transmit system character and country code (“0” for
USA), and no preamble transmitted. The lead-in characters are considered part of the symbol.
NO PREAMBLE
(<DATA>)
SYSTEM CHARACTER
(<SYSTEM CHARACTER> <DATA>)
SYSTEM CHARACTER & CO UNTRY CO DE
(< CO UNTRY CO DE> <SYSTEM CHARACTER> <DATA>)
4-20
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Parameter Menus
UPC-E Pream ble
Three options are given for lead-in characters for UPC-E symbols transmitted to the host
device: transmit system character only, transmit system character and country code (“0” for
USA), and no preamble transmitted. The lead-in characters are considered part of the symbol.
NO PREAMBLE
(<DATA>)
SYSTEM CHARACTER
(<SYSTEM CHARACTER> <DATA>)
SYSTEM CHARACTER & CO UNTRY CO DE
(< CO UNTRY CO DE> <SYSTEM CHARACTER> <DATA>)
4-21
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LS 2106 Product Reference Guide
Convert UPC-E to UPC-A
This parameter converts UPC-E (zero suppressed) decoded data to UPC-A format before
transmission. After conversion, data follows UPC-A format and be affected by UPC-A
programming selections (e.g., Preamble, Check Digit).
Scanning DO NOT CONVERT UPC-E TO UPC-A allows you to transmit
UPC-E (zero suppressed) decoded data.
CO NVERT UPC-E TO UPC-A
(ENABLE)
DO NOT CO NVERT UPC-E TO UPC-A
(DISABLE)
4-22
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Parameter Menus
EAN Zero Extend
If this parameter is enabled, five leading zeros are added to decoded EAN-8 symbols to make
them compatible in format to EAN-13 symbols.
Disabling this parameter returns EAN-8 symbols to their normal format.
ENABLE EAN ZERO EXTEND
DISABLE EAN ZERO EXTEND
4-23
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LS 2106 Product Reference Guide
EAN Zero Extend Code Type
This parameter allows a decoded EAN-8 symbol that has been converted to EAN-13 to be
transmitted with either an EAN-13 code type or an EAN-8 code type.
TYPE IS EAN-13 (Default)
TYPE IS EAN-8
4-24
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Parameter Menus
Enable/Disable Code 128
To enable or disable Code 128, scan the appropriate bar code below.
ENABLE CO DE 128
DISABLE CO DE 128
4-25
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LS 2106 Product Reference Guide
Enable/Disable UCC/EAN-128
To enable or disable UCC/EAN-128, scan the appropriate bar code below.
ENABLE UCC/EAN-128
DISABLE UCC/EAN-128
4-26
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Parameter Menus
Enable/Disable Code 39
To enable or disable Code 39, scan the appropriate bar code below.
ENABLE CO DE 39
DISABLE CO DE 39
4-27
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LS 2106 Product Reference Guide
Code 39 Check Digit Verification
When enabled, this parameter checks the integrity of a Code 39 symbol to ensure it complies
with specified algorithms.
Only those code 39 symbols which include a modulo 43 check digit are decoded when this
parameter is enabled.
ENABLE CO DE 39 CHECK DIGIT
DISABLE CO DE 39 CHECK DIGIT
4-28
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Parameter Menus
Transm it Code 39 Check Digit
Scan this symbol if you want to transmit the check digit with the data.
TRANSMIT CO DE 39 CHECK DIGIT
(ENABLE)
Do Not Transm it Code 39 Check Digit
Scan this symbol if you want to transmit the data without the check digit.
DO NOT TRANSMIT CO DE 39 CHECK DIGIT
(DISABLE)
4-29
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LS 2106 Product Reference Guide
Enable/Disable Code 39 Full ASCII
To enable or disable Code 39 Full ASCII, scan the appropriate bar code below.
When enabled, the ASCII character set assigns a code to letters, punctuation marks,
numerals, and most control keystrokes on the keyboard.
The first 32 codes are non-printable and are assigned to keyboard control characters such as
BACKSPACE and RETURN. The other 96 are called printable codes because all but SPACE
and DELETE produce visible characters.
Code 39 Full ASCII interprets the bar code special character ($ + % /) preceding a Code 39
character and assigns an ASCII character value to the pair. For example, when Code 39 Full
ASCII is enabled and a +B is scanned, it is interpreted as b, % J as ?, and $H emulates the
keystroke BACKSPACE. Scanning ABC$M outputs the keystroke equivalent of ABC
ENTER.
The scanner does not autodiscriminate between Code 39 and Code 39 Full ASCII.
ENABLE CO DE 39 FULL ASCII
DISABLE CO DE 39 FULL ASCII
4-30
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Parameter Menus
Code 39 Buffering (Scan & Store)
When you select the scan and store option, all Code 39 symbols having a leading space as a
first character are temporarily buffered in the unit to be transmitted later. The leading space
is not buffered.
Decode of a valid Code 39 symbol with no leading space causes transmission in sequence of
all buffered data in a first-in first-out format, plus transmission of the “triggering” symbol.
See the following pages for further details.
When the scan and transmit option is selected, decoded Code 39 symbols without leading
spaces are transmitted without being stored in the buffer.
Scan and Store affects Code 39 decodes only. If you select scan and store, we recommend that
you configure the scanner to decode Code 39 symbology only.
BUFFER CO DE 39
(ENABLE)
DO NOT BUFFER CO DE 39
(DISABLE)
While there is data in the transmission buffer, deleting Code 39 buffering capability via
the parameter menu is not allowed. The buffer holds 200 bytes of information.
To allow disabling of Code 39 buffering, first force the buffer transmission (see Transmit
Buffer) or clear the buffer. Both the CLEAR BUFFER and TRANSMIT BUFFER bar codes
are length 1. Be sure Code 39 length is set to include length 1.
4-31
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LS 2106 Product Reference Guide
Buffer Data
To buffer data, Code 39 buffering must be enabled, and a symbol must be read with a space
immediately following the start pattern.
t
Unless symbol overflows the transmission buffer, the unit gives a lo/hi beep to
indicate successful decode and buffering. See O verfilling Transmission Buffer.
t
t
Unit adds the message, excluding the leading space to the transmission buffer.
No transmission occurs.
Clear Transmission Buffer
To clear the transmission buffer, read a symbol which contains only a start character, a dash
(minus), and a stop character.
t
Unit issues a short hi/lo/hi beep to signal that the transmission buffer has been erased,
and no transmission has occurred.
t
t
Unit erases the transmission buffer.
No transmission occurs.
CLEAR BUFFER
4-32
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Parameter Menus
Transmit Buffer
To transmit the buffer, read a symbol containing either the first or second condition:
1. Only a start character, a plus (+), and a stop character.
s
s
s
The unit signals that the transmission buffer has been sent (a lo/hi beep).
Unit sends the buffer.
Unit clears the buffer.
TRANSMIT BUFFER
2. A Code 39 bar code with leading character other than a space.
s
The unit signals a good decode and buffering of that decode has occurred by
giving a hi/lo beep.
s
s
Unit transmits the buffer.
Unit signals that the buffer has been transmitted with a lo/hi beep.
OverfillingTransmission Buffer
If the symbol just read results in an overflow of the transmission buffer:
t
Unit indicates that the symbol has been rejected by issuing three long, high beeps.
No transmission occurs. Data in buffer is not affected.
s
Attempt to Transmit an Empty Buffer
If the symbol just read was the transmit buffer symbol and the Code 39 buffer is empty:
t
t
t
A short lo/hi/lo beep signals that the buffer is empty.
No transmission occurs.
The buffer remains empty.
4-33
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LS 2106 Product Reference Guide
Enable/Disable Code 93
To enable or disable Code 93, scan the appropriate bar code below.
ENABLE CO DE 93
DISABLE CO DE 93
4-34
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Parameter Menus
Enable/Disable Interleaved 2 of 5
To enable or disable Interleaved 2 of 5, scan the appropriate bar code below.
ENABLE INTERLEAVED 2 O F 5
DISABLE INTERLEAVED 2 O F 5
4-35
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LS 2106 Product Reference Guide
Set Lengths for Interleaved 2 of 5
a specific range. The length of a code refers to the number of characters (i.e., human readable
characters) the code contains, and includes check digits.
One Discrete Length - This option allows you to decode only those codes containing a
selected length. For example, if you select I 2 of 5 One Discrete Length, then scan 1, 4, the
only I 2 of 5 symbols decoded are those containing 14 characters. Numeric bar codes begin
on page 4-57. If you make an error or wish to change your selection, scan CANCEL on
page 4-59.
I 2 of 5 - O NE DISCRETE LENGTH
Two Discrete Lengths - This option allows you to decode only those codes containing two
selected lengths. For example, if you select I 2 of 5 Two Discrete Lengths, then scan 0, 2, 1,
4, the only I 2 of 5 symbols decoded are those containing 2 or 14 characters. Numeric bar
codes begin on page 4-57. If you make an error or wish to change your selection, scan
CANCEL on page 4-59.
I 2 of 5 -TW O DISCRETE LENGTHS
4-36
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Parameter Menus
Convert I 2 of 5 to EAN-13
This parameter converts a 14 character I 2 of 5 code into EAN-13, and transmits to the host
as EAN-13. In order to accomplish this, the I 2 of 5 code must be enabled, one length must
be set to 14, and the code must have a leading zero and a valid EAN-13 check digit.
CO NVERT I 2 of 5 to EAN-13
(ENABLE)
DO NOT CO NVERT I 2 of 5 to EAN-13
(DISABLE)
4-37
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LS 2106 Product Reference Guide
Enable/Disable Discrete 2 of 5
To enable or disable Discrete 2 of 5, scan the appropriate bar code below.
ENABLE DISCRETE 2 O F 5
DISABLE DISCRETE 2 O F 5
4-38
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Parameter Menus
Set Lengths for Discrete 2 of 5
a specific range. The length of a code refers to the number of characters (i.e., human readable
characters) the code contains, and includes check digits.
One Discrete Length - This option allows you to decode only those codes containing a
selected length. For example, if you select D 2 of 5 One Discrete Length, then scan 1, 4, the
only D 2 of 5 symbols decoded are those containing 14 characters. Numeric bar codes begin
on page 4-57. If you make an error or wish to change your selection, scan CANCEL on
page 4-59.
D 2 of 5 - O NE DISCRETE LENGTH
Two Discrete Lengths - This option allows you to decode only those codes containing two
selected lengths. For example, if you select D 2 of 5 Two Discrete Lengths, then scan 0, 2, 1,
4, the only D 2 of 5 symbols decoded are those containing 2 or 14 characters. Numeric bar
codes begin on page 4-57. If you make an error or wish to change your selection, scan
CANCEL on page 4-59.
D 2 of 5 -TW O DISCRETE LENGTHS
4-39
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LS 2106 Product Reference Guide
Enable/Disable Codabar
To enable or disable Codabar, scan the appropriate bar code below.
ENABLE CO DABAR
DISABLE CO DABAR
4-40
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Parameter Menus
CLSI Editing
When enabled, this parameter strips the start and stop characters and inserts a space after the
first, fifth, and tenth characters of a 14-character Codabar symbol.
Note: Symbol length does not include start and stop characters.
ENABLE CLSI EDITING
DISABLE CLSI EDITING
4-41
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LS 2106 Product Reference Guide
NOTIS Editing
When enabled, this parameter strips the start and stop characters from decoded Codabar
symbol.
ENABLE NOTIS EDITING
DISABLE NOTIS EDITING
4-42
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Parameter Menus
Enable/Disable MSI Plessey
To enable or disable MSI Plessey, scan the appropriate bar code below.
ENABLE MSI PLESSEY
DISABLE MSI PLESSEY
4-43
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LS 2106 Product Reference Guide
MSI Plessey Check Digits
These check digits, at the end of the bar code verify the integrity of the data. At least one
check digit is always required. Check digits are not automatically transmitted with the data.
O NE MSI Plessey CHECK DIGIT
TW O MSI Plessey CHECK DIGIT
4-44
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Parameter Menus
Transm it MSI Plessey Check Digit
Scan this symbol if you want to transmit the check digit with the data.
TRANSMIT MSI Plessey CHECK DIGIT
(ENABLE)
Do Not Transm it MSI Plessey Check Digit
Scan this symbol if you want to transmit the data without the check digit.
DO NOT TRANSMIT MSI Plessey CHECK DIGIT
(DISABLE)
4-45
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LS 2106 Product Reference Guide
MSI Plessey Check Digit Algorithm
When the two MSI Plessey check digits option is selected, an additional verification is
required to ensure integrity. Either of the two following algorithms may be selected.
MO D 11/MO D 10
MO D 10/MO D 10
4-46
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Parameter Menus
Transm it Code ID Character
A code ID character identifies the code type of a scanned bar code. This may be useful when
the scanner is decoding more than one code type. In addition to any single character prefix
already selected, the code ID character is inserted between the prefix and the decoded symbol.
The user may select no code ID character, a Symbol Code ID character, or an AIM Code ID
character. The Symbol Code ID characters are listed below.
A = UPC-A, UPC-E, EAN-8, EAN-13
B = Code 39
C = Codabar
D = Code 128
E = Code 93
F = Interleaved 2 of 5
G = Discrete 2 of 5, or Discrete 2 of 5 IATA
J = MSI Plessey
K = UCC/EAN-128
L = Bookland EAN
4-47
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LS 2106 Product Reference Guide
Transm it Code ID Character
SYMBO L CO DE ID CHARACTER
AIM CO DE ID CHARACTER
NO NE
4-48
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Parameter Menus
Prefix/Suffix Values
A prefix/suffix may be appended to scan data for use in data editing. These values are set by
scanning a four-digit number (i.e. four bar codes) that corresponds to key codes for various
terminals. See Table A-1 on page A-1 for conversion information. Numeric bar codes begin
on page 4-57. If you make an error or wish to change your selection, scan CANCEL on
page 4-59.
SCAN PREFIX
SCAN SUFFIX
SCAN SUFFIX 2
4-49
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LS 2106 Product Reference Guide
Scan Data Transm ission Form at
Use this parameter to change the format of the scanned data.
DATA AS IS
<DATA><SUFFIX 1>
<DATA> <SUFFIX 2>
4-50
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Parameter Menus
Scan Data Transm ission Form at (cont’d)
<DATA <SUFFIX 1><SUFFIX 2>
<PREFIX> <DATA>
<PREFIX><DATA><SUFFIX 1>
<PREFIX><DATA><SUFFIX 2>
<PREFIX><DATA><SUFFIX 1><SUFFIX 2>
4-51
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LS 2106 Product Reference Guide
Host Interfaces
Use these bar codes to select your host interface.
IBM PC/AT IBM PS/2-50, 55SX, 60, 70, 80 (Default)
IBM PS/2-30
IBM PC/XT
NCR 7052
4-52
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Parameter Menus
National Keyboard Types
Use these bar codes to select the appropriate national keyboard type.
North Am erican (Default)
French
Germ an
French International
4-53
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LS 2106 Product Reference Guide
Spanish
Italian
Swedish
British
4-54
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Parameter Menus
Fast Transm it
Older systems may require a slower transmission method. If your system still needs additional
time to process keyboard dat after setting an Intercharacter Delay, scan the DISABLE FAST
TRANSMIT bar code.
ENABLE FAST TRANSMIT
DISABLE FAST TRANSMIT (Default)
4-55
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LS 2106 Product Reference Guide
Intercharacter Delay
Select the intercharacter delay option matching host requirements. The intercharacter delay
gives the host system time to service its receiver and perform other tasks between characters.
The delay period can range from no delay to 99 msec in 1-msec increments. After scanning
the bar code below, scan two bar codes beginning on page 4-57 to set the desired time-out.
If you make an error or wish to change your selection, scan CANCEL on page 4-59.
INTERCHARACTER DELAY
4-56
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Parameter Menus
Num eric Bar Codes
For parameters requiring specific numeric values, scan the appropriately numbered bar
code(s).
0
1
2
3
4-57
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LS 2106 Product Reference Guide
Num eric Bar Codes (cont’d)
4
5
6
7
8
4-58
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Parameter Menus
Num eric Bar Codes (cont’d)
9
Cancel
If you make an error or wish to change your selection, scan the bar code below.
CANCEL
4-59
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LS 2106 Product Reference Guide
Keyboard Maps
The keyboard maps on the following pages are provided for prefix/suffix keystroke
parameters, and are used only with scanners that support data formatting. To program the
prefix/suffix values, see the bar codes on page 4-49.
5001
5003
5005
5007
5009
7014
7008
5002
5004
5006
5008
5010
7009
7012
7004
7003
7006
7013
7011
7002
Figure 4-1. IBM PC/XT Keyboard
5001
5003
5005
5007
5009
7008
7013
7014
7012
5002
7009
7003
5004
5006
5008
5010
7004
7011
7002
Figure 4-2. IBM PC/AT Keyboard
4-60
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Parameter Menus
Normal
CNTRL
7010
3023
7006
7001
7014
5001
5002
5003
5004
5005
5006
5007 5008
5009
5010
5011
5012
7011
7002
7008
7012
7004
7003
7005
6047
6045
6043
6042
7019
7009
7013
7015
7016
6058
7017
7018
Figure 4-3. IBM PS2 Keyboard
5002
1045 5013
5001
5003
5005
5007
5011
5014 5015
1043 5016
5004
5006
5018
5019
5008
5010
5017
7013
5009
5012
(1048 if double key)
1046
1048
(7013 if double key)
Figure 4-4. NCR 7052 32-Key Keyboard
4-61
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LS 2106 Product Reference Guide
1068
1067
1066
1070
1071
1065
1072
1079
1069
1076
1083
1075
1082
1074
1081
1073
1080
1077
1084
1078
1085
5002
1045 5013
1086
5001
5003
5005
5007
5011
5014 5015
1043 5016
1087
1088
1089
5004
5006
5018
5019
5008
5010
5017
7013
1090
5009
5012
(1048 if double key)
1046
1048
(1043 if double key)
Figure 4-5. NCR 7052 58-Key Keyboard
4-62
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Appendix A
ASCII Character Set
Table A-1. ASCII Character Set
ASCII Value
Full ASCII
Code 39
Keystroke
Encode Char.
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
% U
$A
$B
$C
$D
$E
$F
CTRL 2
CTRL A
CTRL B
CTRL C
CTRL D
CTRL E
CTRL F
CTRL G
CTRL H
CTRL I
CTRL J
CTRL K
CTRL L
CTRL M
$G
$H
$I
$J
$K
$L
$M
A-1
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LS 2106 Product Reference Guide
Table A-1. ASCII Character Set (Continued)
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
$N
$O
$P
CTRL N
CTRL O
CTRL P
CTRL Q
CTRL R
CTRL S
CTRL T
CTRL U
CTRL V
CTRL W
CTRL X
CTRL Y
CTRL Z
CTRL [
CTRL \
CTRL ]
CTRL 6
CTRL -
Space
!
$Q
$R
$S
$T
$U
$V
$W
$X
$Y
$Z
% A
% B
% C
% D
% E
Space
/A
/B
‘
/C
#
/D
E
/E
%
/F
&
/G
‘
/H
(
A-2
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ASCII Character Set
Table A-1. ASCII Character Set (Continued)
1041
1042
1043
1044
1045
1046
1047
1048
1047
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
/I
)
/J
*
+
,
/K
/L
-
-
.
.
/
/
0
0
1
2
3
4
5
6
7
8
9
:
1
2
3
4
5
6
7
8
9
/Z
% F
% G
% H
% I
% J
% V
A
B
;
<
=
>
?
@
A
B
C
C
A-3
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LS 2106 Product Reference Guide
Table A-1. ASCII Character Set (Continued)
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
D
D
E
F
E
F
G
G
H
I
H
I
J
J
K
K
L
M
N
O
P
L
M
N
O
P
Q
Q
R
S
R
S
T
T
U
V
W
X
Y
Z
[
U
V
W
X
Y
Z
% K
% L
% M
% N
\
]
^
A-4
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ASCII Character Set
Table A-1. ASCII Character Set (Continued)
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
% O
% W
+A
+B
+C
+D
+E
+F
_
‘
a
b
c
d
e
f
+G
+H
+I
g
h
i
+J
j
+K
+L
+M
+N
+O
+P
k
l
m
n
o
p
q
r
+Q
+R
+S
s
+T
+U
+V
+W
+X
+Y
t
u
v
w
x
y
A-5
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LS 2106 Product Reference Guide
Table A-1. ASCII Character Set (Continued)
1122
1123
1124
1125
1126
1127
1128
ALT Keys
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
+Z
z
% P
% Q
% R
% S
{
|
}
~
Undefined
Keystroke
ALT 2
ALT A
ALT B
ALT C
ALT D
ALT E
ALT F
ALT G
ALT H
ALT I
ALT J
ALT K
ALT L
ALT M
ALT N
ALT O
ALT P
ALT Q
ALT R
A-6
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ASCII Character Set
Table A-1. ASCII Character Set (Continued)
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
Misc. Key
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
ALT S
ALT T
ALT U
ALT V
ALT W
ALT X
ALT Y
ALT Z
ALT [
ALT \
ALT ]
ALT 6
ALT -
Keystroke
PA 1
PA 2
CMD 1
CMD 2
CMD 3
CMD 4
CMD 5
CMD 6
CMD 7
CMD 8
CMD 9
CMD 10
¥
A-7
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LS 2106 Product Reference Guide
Table A-1. ASCII Character Set (Continued)
3014
3015
£
¤
3016
3017
3018
3019
3020
3021
3022
PF Keys
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
¬
°
1/2
¶
§
|
0/00
Keystrokes
PF 1
PF 2
PF 3
PF 4
PF 5
PF 6
PF 7
PF 8
PF 9
PF 10
PF 11
PF 12
PF 13
PF 14
PF 15
PF 16
PF 17
A-8
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ASCII Character Set
Table A-1. ASCII Character Set (Continued)
4018
4019
4020
4021
4022
4023
4024
F Keys
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
PF 18
PF 19
PF 20
PF 21
PF 22
PF 23
PF 24
Keystroke
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
F14
F15
F16
F17
F18
F19
A-9
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LS 2106 Product Reference Guide
Table A-1. ASCII Character Set (Continued)
5020
5021
F20
F21
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
F22
F23
F24
F25
F26
F27
F28
F29
F30
F31
F32
F33
F34
F35
F36
F37
F38
F39
F40
Numeric
Keypad
Keystroke
6042
6043
6044
6045
*
+
undefined
-
A-10
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ASCII Character Set
Table A-1. ASCII Character Set (Continued)
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
.
/
0
1
2
3
4
5
6
7
8
9
Enter
Num Lock
00
Extended
Keypad
Keystroke
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
Break
Delete
Pg Up
End
Pg Dn
Pause
Scroll Lock
Backspace
Tab
Print Screen
Insert
A-11
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LS 2106 Product Reference Guide
Table A-1. ASCII Character Set (Continued)
7012
7013
Home
Enter
7014
7015
7016
7017
7018
7019
Escape
Up Arrow
Dn Arrow
Left Arrow
Right Arrow
Back Tab
A-12
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Glossary
Aperture
ASCII
The opening in an optical system defined by a lens or baffle that
establishes the field of view.
American Standard Code for Information Interchange. A 7 bit-plus-
parity code representing 128 letters, numerals, punctuation marks,
and control characters. 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., characters per inch).
Bar Height
Bar Width
The dimension of a bar measured perpendicular to the bar width.
Thickness of a bar measured from the edge closest to the 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
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LS 2106 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 intrinsically safe, even if all laser output were directed
into the eye's pupil. There are no special operating procedures for this
class.
CDRH Class 2
Character
No additional software mechanisms are needed to conform to this
limit. Laser operation in this class poses no danger for unintentional
direct human exposure.
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
Check Digit
Those characters available for encodation in a particular bar code
symbology.
A digit used to verify a correct symbol decode. The scanner inserts the
decoded data into an arithmetic formula and checks that the 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
Code 128
A discrete self-checking code with a character set consisting of digits
0 to 9 and six additional characters: ( - $ : / , +).
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
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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
Discrete Code
Discrete 2 of 5
The range between minimum and maximum distances at which a
scanner can read a symbol with a certain minimum element width.
A bar code or symbol in which the spaces between characters
(intercharacter gaps) are not part of the code.
A binary bar code symbology representing each character 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 provides its own coding format and symbology standards.
Element dimensions are specified metrically. EAN is used primarily
in retail.
Element
Generic term for a bar or space.
Encoded Area
Total linear dimension occupied by all characters of a code pattern,
including start/ stop characters and data.
Host Computer
IEC
A computer that serves other terminals in a network, providing such
services as computation, database access, supervisory programs, and
network control.
International Electrotechnical Commission. This international agency
regulates laser safety by specifying various laser operation classes
based on power output during operation.
Glossary-3
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LS 2106 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.
Interleaved Bar Code A bar code in which characters are paired together, using bars to
represent the first character and the intervening spaces to represent
the second.
Interleaved 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
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
Stimulated Emission typically coherent and has a high energy density.
of Radiation
Laser Diode
A gallium-arsenide semiconductor type of laser connected to a power
source to generate a laser beam. This laser type is a compact source of
coherent light.
LED Indicator
A semiconductor diode (LED - Light Emitting Diode) used as an
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.
MIL
1 mil = 1 thousandth of an inch.
Misread
(Misdecode)
A condition which occurs when the data output of a reader or
interface controller does not agree with the data encoded within a bar
code symbol.
Nominal
The exact (or ideal) intended value for a specified parameter.
Tolerances are specified as positive and negative deviations from this
value.
Nominal Size
Parameter
Standard size for a bar code symbol. Most UPC/ EAN codes can be
used over a range of magnifications (e.g., from 0.80 to 2.00 of
nominal).
A variable that can have different values assigned to it.
Glossary-4
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Glossary
Percent Decode
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 Contrast Signal Measurement of the contrast (brightness difference) between the bars
(PCS)
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
reflectance factor of the background and RD the reflectance factor of
the dark bars.
Programming Mode The state in which a scanner is configured for parameter values. See
SCANNING MODE.
Quiet Zone
A clear space, containing no dark marks, which precedes the start
character of a bar code symbol and follows the stop character.
Reflectance
Resolution
Amount of light returned from an illuminated surface.
The narrowest element dimension which can be distinguished by a
particular reading device or printed with a particular device or
method.
Scan Area
Scanner
Area intended to contain a symbol.
An electronic device used to scan bar code symbols and produce a
digitized pattern that corresponds 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 reflected light (more light
reflected from spaces).
3. Signal conditioning circuit - transforms optical detector output into
a digitized bar pattern.
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 background between
bars.
Specular Reflection
The mirror-like reflection of light from a surface, which can “blind” a
scanner.
Glossary-5
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LS 2106 Product Reference Guide
Start/Stop Character A pattern of bars and spaces that provides the scanner with start 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
Symbol
A foundation material on which a substance or image is placed.
A scannable unit that encodes data within the conventions of a certain
symbology, usually including start/ stop characters, quiet zones, data
characters, and check characters.
Symbol Aspect Ratio 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 the last row.
Symbol Length
Length of symbol measured from the beginning of the quiet zone
(margin) adjacent to the start character to the end of the quiet zone
(margin) adjacent to a stop character.
Symbology
The structural rules and conventions for representing data within a
particular bar code type (e.g. UPC/ EAN, Code 39).
Tolerance
UPC
Allowable deviation from the nominal bar or space width.
Universal Product Code. A relatively complex numeric symbology.
Each character consists of two bars and two spaces, each of which can
be any of four widths. The standard symbology for retail food
packages in the United States.
Visible Laser Diode A solid state device which produces visible laser light. Laser light
(VLD)
emitted from the diode has a wavelength of 670 to 680 nanometers.
Glossary-6
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