Leuze electronic BCL 300 Series, Техническое описание

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S pecification s
52 BCL 3 04
i
Le u ze electronic
5.4 Readin g field curve s / optical data
5.4.1 Bar code characteri s tic s
Notice!
Please note that the size of the bar code module influences the maximum reading distance
and the width of the reading field. Therefore, when selecting a mounting location and/or the
bar code label, take into account the different reading characteristics of the scanner with var-
ious bar code modules.
Fig u re 5.6: The mo s t import a nt ch a r a cteri s tic s of a ba r code
The r a nge in which the ba r code c a n b e re a d b y the BCL 3 04
i
(the s o-c a lled re a ding field)
depend s on the q ua lity of the printed ba r code a nd it s dimen s ion s .
Therefore, ab ove a ll, the mod u le of a ba r code i s deci s ive for the s ize of the re a ding field.
Notice!
A rule of thumb: The smaller the module of the bar code is, the smaller the maximum reading
distance and reading field width will be.
M = Mod u le: The n a rrowe s t line or s p a ce of a ba r code
in mm.
Z
B
= Wide ch a r a cter: Wide ba r s a nd g a p s a re a m u ltiple
(r a tio) of the mod u le.
Mod u le x R a tio = Z
B
(Norm a l R a tio 1 : 2.5).
B
Z
= Q u iet zone: The q u iet zone s ho u ld b e a t le as t 10
time s the mod u le, bu t not le ss th a n 2.5mm.
L = Code length: The length of the ba r code in mm
incl u ding the s t a rt a nd s top ch a r a cter s . The q u iet
zone i s incl u ded depending on the code definition.
S
L
= B a r length: Height of the element s in mm.