Operating Instructions
Chapter
10
CLV 45x Bar Code Scanner
Appendix
8 009 139/K949/06-06-2002
©
SICK AG · Division Auto Ident · Germany · All rights reserved
10-57
10.14Glossary
For further terms please refer to the
"CLV-Setup Help" online help
.
Adjusting mode
Special operating mode that enables the center of the scan line to be positioned exactly on
the object containing the bar code.
Aperture angle
α
Angle within whose limits the laser beam is deflected by the polygon mirror wheel. A V-
shaped range perpendicular to the scan direction, which must contain the bar code, is for-
med in front of the reading window. If only part of this opening angle is used (part of the scan
line symmetric around the center point), the depth of field for the focal position and resolu-
tion is greater.
Aspect ratio
Ratio of the code height (bar length) to the code length (number of characters). The SMART
decoder can also read bar codes with extremely small aspect ratios.
Auto Setup
Function that allows the code and reading configuration of the CLV to be adapted automa-
tically to the reading situation. The CLV uses the standard decoder to search for a bar code
that is presented at a fixed reading distance and attempts to determine the optimum scan-
ning rate and focal position. It enters the found code type and code length as parameter
values and disables all other code types and lengths for the evaluation.
Auxiliary input
Special function on the
Ö
terminal interface. Used to enter bar code data manually sub-
sequently in order to complete reading results sent to the host.
Capture range
Zone around a moving bar code created by the CLV using the increment management and
code position comparison functions. Enables bar codes with identical contents and code
type to be separated.
Christmas tree effect
Effect caused by limiting the active scan line range (CP values) and oscillating amplitude (CW
values) on the
Ö
line scanner with oscillating mirror. In this way, a uniform ”sharply-defined
window" can be created in the reading field for each distance configuration, independent of
the reading distance.
CLV Assistant
The CLV Assistant facilitates e. g. the parameterizing and testing of the CLV. It guides you in
simple steps through the configuration of the CLV for an application-specific reading situati-
on and
one
bar code. The determined settings are transferred to CLV-Setup.
CLV-Setup
PC software, executable under Windows 95
TM
/98
TM
and Windows NT
TM
. Is used for offline
parameterization (adaptation to the reading situation on site) and the online operation of the
CLV in a dialog box. The parameter record to be edited is exchanged with the CLV by
Ö
uploading and
Ö
downloading it.