SECTION 1
General Information
SE 1223 Scanner User’s 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 eye’s 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.
Summary of Contents for SE1223
Page 1: ...SE 1223 Integrated VLD Scanner USER S GUIDE PN 961 032 042 Revision B September 1999...
Page 8: ...CONTENTS vi SE 1223 Scanner User s Guide...
Page 22: ...SECTION 1 General Information 1 14 SE 1223 Scanner User s Guide...
Page 124: ...SECTION 3 Scanner Specifications 3 14 SE 1223 Scanner User s Guide...
