Operating Instructions
Chapter
10
CLX490
8009237/RB47/2007-08-03
©
SICK AG · Division Auto Ident · Germany · All rights reserved
10-45
Appendix
Reading field height
Length of the
Ö
scan line that is available for detecting the bar code in the reading plane.
Reading interval
Timeslot in which the CLX activates the laser diode and attempts to detect valid bar codes
from the information read. The reading interval may be shorter than the external reading
pulse, depending on the selected output mode for the reading result.
Reading pulse
Clock pulse applied externally to the CLX to trigger the internal
Ö
reading interval. Can be
supplied by a photoelectric reflex switch or a command from the host on the serial inter-
face.
Reading range (DOF)
Depth of field about the focal point of the laser beam on two sides. The extent of the reading
range depends on the resolution and reading distance.
Reading result
Electronic representation of the data content of the read bar code together with the
Ö
read-
ing diagnosis data in one
Ö
data output string that is generated after the reading pulse has
elapsed. The reading result on the auxiliary interface has a fixed format (content and output
format); the reading result on the host interface can be configured separately for Good
Reads and No Reads. Special characters can also be added if necessary.
Result status output
Function of the four "Result 1" to "Result 4" switching outputs in Reading mode. Signals the
status of the reading result without indicating its contents (e. g. Good Read). You can assign
a status to each output on the D
EVICE
F
UNCTION
tab in CLX. The "Read Result" LED is linked
to the "Result 2" output.
Scan line
See CLX490 Compact OMNI Scanner.
Sending point
Point at which the reading result is output with respect to the start of the
Ö
reading pulse
and the internal
Ö
reading interval.
SMART decoder
Specially developed
Ö
decoder for reading bar codes with an extremely small code height
and for poor-quality or contaminated code prints.
Specification diagrams
Diagrams for reading the resolution-specific depth of field (DOF) for specific focus positions.
Splitter
Data block in the reading result of the
Ö
host interface. Used to separate the data content
of the bar codes. Contains up to 5 elements, consisting of constants (control characters,
letters, digits), depending on the configuration. The "Splitter" block is empty in the default
setting of the CLX.
