![background image](http://html.mh-extra.com/html/sick/1016958/1016958_operating-instructions-manual_1264215046.webp)
Chapter
4
Operating Instructions
CLV490 Bar Code Scanner
4-10
©
SICK AG · Division Auto Ident · Germany · All rights reserved
8009993/RA61/2007-07-20
Installation
4.3.3
Adjusting mode
The "Adjusting mode" helps you to position the
center
of the scan line on the object. To do
so, the CLV490 masks out one half of the scan line from the center (reading angle RA = 50
to RA = 100). This is irrespective of whether the CLV490 is operated in Autofocus mode or
with distance configurations for event-driven dynamic focus control.
shows the resulting position of the scan line (line scanner).
Line scanner with oscillating mirror:
In "Adjusting" mode, the oscillating mirror behaves in the same manner as within the ”Per-
cent Evaluation” mode (
see
Page 4-8
,
“Activating Percentage Evaluation mode:“
).
1.
Activate the operating mode as described in
Chapter 6.5.3 Adjusting mode, Page 6-43
.
2.
Position the CLV490 in such a way that the center of the scan line, indicated by the end
of the scan line (reading angle RA = 50), is located at the center of the bar code, or at
the center of the field for all codes if several bar codes are used.
Show RA-limits
The "Show RA-limits" operating mode allows you to test whether the desired effect was pro-
duced by narrowing the scan line’s active evaluation range. The CLV490 alternatively hides
certain parts of the scan line in accordance with the selected min. and max. values of the
reading angle.
For activation of this operating mode and for checking, See
Fig. 4-9:
Line scanner: scan line in Adjusting mode
RA = 100
RA = 50
RA = 0
Adjusting mode
Range masked out
Scan line
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW
WW
W
.100
Y.COM.TW