Motorola MC21XX SERIES Integrator Manual page 77

1D Laser Decode Distances
Table A-3
Symbol Density/
Bar Code Type/
W-N Ratio
5.0 mil
Code 128
5.0 mil
Code 39; 2.5:1
7.5 mil
Code 39; 2.5:1
10 mil
Code 128
13 mil
100% UPC
15 mil
Code 128
20 mil
Code 39; 2.2:1
55 mil
Code 39; 2.2:1
100 mil
Code 39; 3.0:1 reflective
Notes:
1. Contrast measured as Mean Reflective Difference (MRD) at 650 nm.
2. Working range specifications at ambient temperature (23°C), photographic quality symbols.
Pitch=10°, roll=0°, skew=0°, ambient light < 150 ft-candles using Symbol or equivalent decoder.
3. Dependent on width of bar code.
4. Distances measured from front edge of scan engine chassis.
Bar Code Content/
Note 1
Contrast
1234
80% MRD
ABCDEFGH
80% MRD
ABCDEF
80% MRD
1234
80% MRD
12345678905
80% MRD
1234
80% MRD
123
80% MRD
CD
80% MRD
123456
80% MRD
Specifications
Typical Working Ranges
Near
1.2 in 7.7 in
3.05 cm 19.56 cm
1.2 in 12.5 in
3.05 cm 31.75 cm
1.1 in 18.5 in
2.79 cm 46.99 cm
1.2 in 19.0 in
3.05 cm 48.26 cm
Note 3
1.6 in 27.0 in
4.06 cm 68.58 cm
1.0 in 29.5 in
2.54 cm 74.93 cm
Note 3
1.4 in 52.0 in
3.56 cm 132.08 cm
Note 3
3.4 in 100.0 in
8.64 cm 254.00 cm
Note 3
2 ft 17 ft
60.96cm 518.16 cm
Note 3
A - 7
Far