Intermec SE1223 User manual

Type
User manual
SE 1223 Integrated VLD Scanner
USERS GUIDE
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PN: 961-032-042
Revision B
September 1999
" NOTICE The information contained herein is proprietary and is provided solely for the
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of Intermec Technologies Corporation.
Ó 1998 Intermec Technologies Corporation. All rights reserved.
SE 1223 Scanner Users Guide i
CONTENTS
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SECTION 1
General Information
SE 1223 Integrated VLD Scanner Overview 1-1. . .. . .. . .. . .
Definition of Terms 1-1. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Aperture 1-1. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
ASCII 1-2. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Bar 1-2. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Bar Code Density 1-2. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Bar Code Security 1-2. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Bar Height 1-2. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Bar Width 1-2. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
CDRH 1-2. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
CDRH Class I 1-3. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
CDRH Class II 1-3. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Character 1-3. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Character Set 1-3. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Check Digit 1-3. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Codabar 1-4. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Code 3 of 9 (Code 39) 1-4. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Code 93 1-4. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Code 128 1-4. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Code Length 1-4. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Continuous Code 1-4. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Dead Zone 1-5. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Decode 1-5. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Decode Algorithm 1-5. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Depth of Field 1-5. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Discrete Code 1-5. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Discrete 2 of 5 1-5.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
EAN 1-6. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Element 1-6.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Encoded Area 1-6. .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
CONTENTS
ii SE 1223 Scanner Users Guide
Host Computer 1-6. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
IEC 1-6. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
IEC Class I (IEC 825 Class I) 1-6. . .. . .. . .. . .. . .. . .. . ..
Intercharacter Gap 1-7. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Interleaved Bar Code 1-7. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Interleaved 2 of 5 1-7. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Laser 1-7. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Laser Diode 1-7. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Laser Indicator 1-8. . . . . . . . . . .. . .. . .. . .. . .. . .. . .. . .. .
Lead-In Characters 1-8. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
MIL 1-8. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Misread (Misdecode) 1-8. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
MSI Plessey 1-8. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Nominal 1-9. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Nominal Size 1-9. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Parameter 1-9. . . . . . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Percent Decode 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Print Contrast Signal (PCS) 1-9. . .. . .. . .. . .. . .. . .. . .. .
Programming Mode 1-9. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Quiet Zone 1-10. . . . . . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Reflectance 1-10. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Resolution 1-10. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Scan Area 1-10. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Scanner 1-10. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Scanning Mode 1-10. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Scanning Sequence 1-11. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Self-Checking Code 1-11. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Space 1-11. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Specular Reflection 1-11. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Start/Stop Character 1-11. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Substrate 1-11. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Symbol 1-11. . . . . . . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Symbol Aspect Ratio 1-12. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Symbol Length 1-12. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Symbology 1-12. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Tolerance 1-12. . . . . . . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
UPC 1-12. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Visible Laser Diode (VLD) 1-12. . .. . .. . .. . .. . .. . .. . .. . .
Laser Hazard Classifications 1-13. . .. . .. . .. . .. . .. . .. . .. . .. .
CONTENTS
SE 1223 Scanner Users Guide iii
SECTION 2
Scanner Parameters
Introduction 2-1. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Identifying the Default Settings 2-2. . .. . .. . .. . .. . .. . ..
Scanning Sequence 2-2.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Errors While Scanning 2-3. . .. . .. . .. . .. . .. . .. . .. . .. . .
Reset to Default Settings 2-4. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Decode Data Packet Format 2-4. . .. . .. . .. . .. . .. . .. . .. . .. .
Laser On Time 2-8.. . . . . . . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Aim Duration 2-9. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Transmit No Read Message 2-10. . .. . .. . .. . .. . .. . .. . .. . ..
Parameter Scanning 2-11. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Linear Code Type Security Levels 2-12. . .. . .. . .. . .. . .. . .. . .
Bidirectional Redundancy 2-16. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Symbology Types 2-17. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
UPC/EAN 2-18. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Enable/Disable UPC-A 2-18. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Enable/Disable UPC-E 2-19. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Enable/Disable UPC-E1 2-20. . .. . .. . .. . .. . .. . .. . .. . .. .
Enable/Disable EAN-8 2-21. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Enable/Disable EAN-13 2-22. . .. . .. . .. . .. . .. . .. . .. . .. . .
Enable/Disable Bookland EAN 2-23. . .. . .. . .. . .. . .. . .. .
Decode UPC/EAN Supplementals 2-24. . .. . .. . .. . .. . .. . .. . .
Decode UPC/EAN Supplemental Redundancy 2-26. . .. . .
Transmit UPC-A Check Digit 2-27. . .. . .. . .. . .. . .. . .. . .. . ..
Transmit UPC-E Check Digit 2-28. . .. . .. . .. . .. . .. . .. . .. . ..
Transmit UPC-E1 Check Digit 2-29. . .. . .. . .. . .. . .. . .. . .. . .
UPC-A Preamble 2-30. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
UPC-E Preamble 2-31. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
UPC-E1 Preamble 2-32. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Convert UPC-E to UPC-A 2-33. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Convert UPC-E1 to UPC-A 2-34. . .. . .. . .. . .. . .. . .. . .. . .
EAN Zero Extend 2-35. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Convert EAN-8 to EAN-13 Type 2-36. . .. . .. . .. . .. . .. . ..
UPC/EAN Security Level 2-37. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
UPC/EAN Security Level 0 2-37. . .. . .. . .. . .. . .. . .. . .. . .
UPC/EAN Security Level 1 2-38. . .. . .. . .. . .. . .. . .. . .. . .
UPC/EAN Security Level 2 2-38. . .. . .. . .. . .. . .. . .. . .. . .
UPC/EAN Security Level 3 2-39. . .. . .. . .. . .. . .. . .. . .. . .
UPC/EAN Coupon Code 2-40. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
CONTENTS
iv SE 1223 Scanner Users Guide
Code 128 2-41. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Enable/Disable USS-128 2-41. . .. . .. . .. . .. . .. . .. . .. . .. .
Enable/Disable UCC/EAN-128 2-42. . .. . .. . .. . .. . .. . .. . .
Enable/Disable ISBT 128 2-43. . .. . .. . .. . .. . .. . .. . .. . ..
Code 39 2-44. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Enable/Disable Code 39 2-44. . . . . . . . . . . . . . . . . . . .. . . . . . .
Enable/Disable Trioptic Code 39 2-45. . .. . .. . .. . .. . .. . ..
Convert Code 39 to Code 32 2-46. . .. . .. . .. . .. . .. . .. . .. .
Code 39 Prefix 2-47. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Set Lengths for Code 39 2-48. . .. . .. . .. . .. . .. . .. . .. . .. .
Code 39 Check Digit Verification 2-50. . .. . .. . .. . .. . .. . .
Transmit Code 39 Check Digit 2-51. . .. . .. . .. . .. . .. . .. . .
Enable/Disable Code 39 Full ASCII 2-51. . .. . .. . .. . .. . ..
Code 93 2-53. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Enable/Disable Code 93 2-53. . . . . . . . . . . . . . . . . . . .. . . . . . .
Set Lengths for Code 93 2-54. . .. . .. . .. . .. . .. . .. . .. . .. .
Interleaved 2 of 5 2-56. . . . . . . . . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Enable/Disable Interleaved 2 of 5 2-56. . .. . .. . .. . .. . .. . .
Set Lengths for Interleaved 2 of 5 2-57. . .. . .. . .. . .. . .. .
I 2 of 5 Check Digit Verification 2-60. . .. . .. . .. . .. . .. . ..
Transmit I 2 of 5 Check Digit 2-61. . .. . .. . .. . .. . .. . .. . ..
Convert I 2 of 5 to EAN-13 2-62. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Discrete 2 of 5 2-63. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Enable/Disable Discrete 2 of 5 2-63. . .. . .. . .. . .. . .. . .. . .
Set Lengths for Discrete 2 of 5 2-64. . .. . .. . .. . .. . .. . .. .
Codabar 2-67. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Enable/Disable Codabar 2-67.. . .. . .. . .. . .. . .. . .. . .. . ..
Set Lengths for Codabar 2-68. . . . . . . . . . . . . . . . . . . . . . . . . .
CLSI Editing 2-71. . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . ..
NOTIS Editing 2-72. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
MSI Plessey 2-73. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Enable/Disable MSI/Plessey 2-73. . .. . .. . .. . .. . .. . .. . .. .
Set Lengths for MSI Plessey 2-74. . .. . .. . .. . .. . .. . .. . ..
MSI Plessey Check Digit 2-77. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Transmit MSI Plessey Check Digit 2-78. . .. . .. . .. . .. . .. .
MSI Plessey Check Digit Algorithm 2-79. . .. . .. . .. . .. . ..
Transmit Code ID Character 2-80. . .. . .. . .. . .. . .. . .. . .. . .. .
Prefix/Suffix Values 2-82. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Scan Data Transmission Format 2-84. . .. . .. . .. . .. . .. . .. . ..
Numeric Bar Codes 2-87. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Cancel 2-89. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
CONTENTS
SE 1223 Scanner Users Guide v
SECTION 3
Scanner Specifications
SE 1223 Standard Scanner 3-1. . .. . .. . .. . .. . .. . .. . .. . .. . .
SE 1223 Standard Scanner Decode Zone 3-3. . .. . .. . .. . .. . .
SE 1223 Wide Angle Scanner 3-4. . . . .. . .. . .. . .. . .. . .. . .. .
SE 1223 Wide Angle Scanner Decode Zone 3-6. . .. . .. . .. . ..
SE 1223 Very High Density (VHD) Scanner 3-7. . .. . .. . .. . .
SE 1223 Very High Density (VHD) Scanner Decode Zone 3-9
SE 1223 Long Range (LR) Scanner 3-10.. . . . . . . . . .. . .. . .. . .
SE 1223 Long Range (LR) Scanner Decode Zone 3-12. . .. . .. .
APPENDIX A
Prefix and Suffix Character Equivalent Table
TABLES
Table 2-1 Scanner Default Settings 2-5. . . . . . . . . . . . . . . . . . . .
Table 3-1 SE 1223 Standard Scanner Technical
Specifications 3-1. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Table 3-2 SE 1223 Standard Scanner Decode
Distances 3-3. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Table 3-3 SE 1223 Wide Angle Scanner Technical
Specifications 3-4. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Table 3-4 SE 1223 Wide Angle Scanner Decode
Distances 3-6. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
Table 3-5 SE 1223 VHD Scanner Technical
Specifications 3-7. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
Table 3-6 SE 1223 VHD Scanner Decode Distances 3-9. . .. .
Table 3-7 SE 1223 LR Scanner Technical Specifications 3-10.
Table 3-8 SE 1223 Standard Scanner Decode Distances 3-12.
Table A-1 Prefix and Suffix Character Equivalent A-88. . .. . .
CONTENTS
vi SE 1223 Scanner Users Guide
SE 1223 Scanner Users Guide 1-1
Section 1
General Information
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SE 1223 Integrated VLD Scanner
Overview
Your SE 1223 Integrated VLD Scanner is a miniature, vis-
ible-laser scanner with an integrated decoder. The SE 1223
scanner contains an inboard microcontroller that scans and
processes bar codes into ASCII data.
The SE 1223 contains a miniature scan engine, on board
voltage monitor, a watchdog timer, two hardware hand-
shaking lines, and an EEPROM for storing decoder parame-
ters. It also provides over-temperature protection that turns
the laser off if the temperature rises above acceptable limits
(50_C).
Definition of Terms
This section defines terms used in this Users Guide. These
terms include general computer jargon, scanner descrip-
tions, and brief descriptions of common bar code symbolo-
gies.
Aperture
The opening in an optical system defined by a lens or a
baffle that establishes the field of view.
SECTION 1General Information
1-2 SE 1223 Scanner Users Guide
ASCII
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.
Bar
The dark element in a printed bar code symbol.
Bar Code Density
The number of characters represented per unit of measure-
ment (e.g. characters per inch).
Bar Code Security
The level of bar code quality that the scanner will attempt
to decode.
Bar Height
The dimension of a bar measured perpendicular to the bar
width
Bar Width
Thickness of a bar measured from the edge closest to the
symbol start character to the trailing edge of the same bar.
CDRH
Center for Devices and Radiological Health. A federal
agency responsible for regulating laser product safety. This
SECTION 1 General Information
SE 1223 Scanner Users Guide 1-3
agency specifies various laser operation classes based on
power output during operation.
CDRH Class I
This is the lowest power CDRH laser classification. This
class is considered intrinsically safe, even if all laser output
were directed into the eyes pupil. There are no special oper-
ating procedures for this class.
CDRH Class II
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 repre-
sents data or indicates a control function, such as a number,
letter, punctuation mark, or communications control con-
tained in a message.
Character Set
Those characters available for encodation in a particular
bar code symbology.
Check Digit
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 op-
tional for other symbologies. Using check digits decreases
the chance of substitution errors when a symbol is inter-
preted.
SECTION 1General Information
1-4 SE 1223 Scanner Users Guide
Codabar
A discrete self-checking code with a character set consisting
of digits 0 to 9 and six additional characters: (-- $ : / , +).
Code 3 of 9 (Code 39)
A versatile and widely used alphanumeric bar code symbol-
ogy with a set of 43 character types, including all uppercase
letters, numerals from 0 to 9, and seven special characters
(-- . / + % $ and space). The code name is derived from the
fact that 3 of the 9 elements representing a character are
wide, while the remaining six are narrow.
Code 93
An industrial symbology compatible with Code 39 but offer-
ing a full character ASCII set and a higher coding density
than Code 39.
Code 128
A high density symbology which allows the controller to en-
code all 128 ASCII characters without adding extra symbol
elements.
Code Length
Number of data characters in a bar code between the start
and stop 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
SECTION 1 General Information
SE 1223 Scanner Users Guide 1-5
a continuous code. The absence of gaps allows for greater
information density.
Dead Zone
An area within a scanners field of view, in which specular
reflection may prevent a successful decode.
Decode
To recognize a bar code symbology such as 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 charac-
ters (intercharacter gaps) are not part of the code.
Discrete 2 of 5
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 en-
SECTION 1General Information
1-6 SE 1223 Scanner Users Guide
coded; 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
A computer that serves other terminals in a network, pro-
viding such services as computation, database access, su-
pervisory programs, and network control.
IEC
International Electrotechnical Commission. This interna-
tional agency regulates laser safety by specifying various
laser operation classes based on power output during opera-
tion.
IEC Class I (IEC 825 Class I)
This is the lowest power IEC laser classification. Conformi-
ty is ensured through a software restriction of 120 seconds
SECTION 1 General Information
SE 1223 Scanner Users Guide 1-7
of laser operation within any 1000 second window and an
automatic laser shutdown if the scanners 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. Interleav-
ing 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
An acronym for Light Amplification by Stimulated Emis-
sion of Radiation. 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.
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.
SECTION 1General Information
1-8 SE 1223 Scanner Users Guide
Laser 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 semiconductors particular chemical com-
position.
Lead-In Characters
Preamble characters
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.
MSI Plessey
A numeric-only bar code type. It can accept a variable num-
ber of digits up to 13. MSI Plessey consists of four bars and
four adjacent spaces. Each bar\space pair consists of one
information bit. A zero bit consists of a narrow bar followed
by a wide space, while one bit consist of a wide bar followed
by a narrow bar. The zero bit is one unit bar followed by a
two-unit space and the one bit is a two-unit bar followed by
a one unit space. The primary application for the MSI Ples-
sey code is marking of retail shelves and subsequent scan-
ning with portable devices for inventory purposes.
SECTION 1 General Information
SE 1223 Scanner Users Guide 1-9
Nominal
The exact (or ideal) intended value for a specified parame-
ter. Tolerances are specified as positive and negative devi-
ations from this value.
Nominal Size
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).
Parameter
A variable that can have different values assigned to it.
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, the probability should approach
100%.
Print Contrast Signal (PCS)
Measurement of the contrast (brightness difference) be-
tween the bars and spaces of a symbol. A minimum PCS
value is needed for a bar code symbol to be scannable. PCS
= (R
L
-- R
D
) /R
L
, where R
L
is the reflectance factor of the
background and R
D
the reflectance factor of the dark bars.
Programming Mode
The state in which a scanner is configured for parameter
values.
SECTION 1General Information
1-10 SE 1223 Scanner Users Guide
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
Amount of light returned from an illuminated surface.
Resolution
The narrowest element dimensions which can be distin-
guished by a particular reading device or printed with a
particular device or method.
Scan Area
Area intended to contain a symbol.
Scanner
An electronic device used to scan bar code symbols and pro-
duce 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.
SECTION 1 General Information
SE 1223 Scanner Users Guide 1-11
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 en-
coding 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
blinda scanner.
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
A foundation material on which a substance or image is
placed.
Symbol
A scannable unit that encodes data within the conventions
of a certain symbology, usually including start/stop charac-
ters, quiet zones, data characters, and check characters.
SECTION 1General Information
1-12 SE 1223 Scanner Users Guide
Symbol Aspect Ratio
The ratio of symbol height to symbol width.
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 such as UPC/EAN, Code
39, etc.
Tolerance
Allowable deviation from the nominal bar or space width.
UPC
Universal Product Code is a relatively complex numeric
symbology. Each character consists of two bars and two
spaces, each of which can be any of four widths. The stan-
dard symbology for retail food packages in the United
States.
Visible Laser Diode (VLD)
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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Intermec SE1223 User manual

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User manual

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