READING FEATURES
3
If scanning is parallel to the code movement (Figure 32) the number of effective
scans is given by:
SN = [((FW-LW)/LS)
*
SS] - 2
These symbols signify:
SN = number of effective scans
FW = reading field width (in mm)
LW = label width (in mm)
LS = label movement speed (in mm/s)
SS = scans per second
For example, for a 100 mm wide code moving in a point where the reading field is
200 mm wide at a 2000 mm/s speed, the DS4600A (800 scans per sec.), performs:
[((200-100)/2000)
*
800] - 2 = 38 scans
3.3 PERFORMANCE
The DS4600A scanner is available in different versions according to the reading
performance.
Version Max Code Resolution Speed
mm (mils) scans/s
21XX / 31XX 0.50 (20) 800
20XX / 30XX 0.25 (10) 800
220X / 32XX 0.20 (8) 800
Version Reading Distance
210X 200 mm (8 in) - 980 mm (39 in) on 1.00 mm (40 mils) codes
200X 160 mm (6 in) - 540 mm (21 in) on 0.50 mm (20 mils) codes
220X 50 mm (1.97 in) - 400 mm (15.75 in) on 0.80 mm (31 mils) codes
310X 200 mm (8 in) - 970 mm (38 in) on 1.00 mm (40 mils) codes
300X 160 mm (6 in) - 540 mm (21 in) on 0.50 mm (20 mils) codes
320X 120 mm (4.7 in) - 310 mm (12.2 in) on 0.30 mm (12 mils) codes
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