Symbol MC3000 User Manual page 149

MC3000-R Laser Decode Ranges
Table A-4.
Symbol Density/
Bar Code Type/ Bar Code Content/
W-N Ratio Contrast (Note 1)
5.0 mil ABCDEFGH+
Code 39; 2.5:1 80% MRD
7.5 mil ABCDEF
Code 39; 2.5:1 80% MRD
10 mil 012345678905
Code 39; 2.5:1 80% MRD
UPC A 123
80% MRD
20 mil 123
Code 39; 2.2:1 25% MRD
40 mil AB
Code 39; 2.2:1 80% MRD
55 mil CD
Code 39; 2.2:1 80% MRD
Notes:
1. CONTRAST measured as Mean Reflective Difference (MRD) at 650 nm.
2. Near ranges on lower densities are largely dependent upon the width of the bar code and
the scan angle.
3. Working range specifications: Photographic quality symbols, pitch = 10°, skew = 0°, roll =
0°, ambient light < 150 ft. candles, and temperature = 23 °C
Ranges
Near Far
2.0 in 4.9 in
5.08 cm 12.45 cm
1.6 in 7.9 in
4.06 cm 20.07 cm
1.2 in 10.8 in
3.05 cm 67.95cm
1.3 in 12.7 in
3.30 cm 32.26 cm
(Note 2)
1.4 in 17.9 in
3.56 cm 45.47 cm
(Note 2)
2.4 in 26.4 in
6.10 cm 67.06 cm
(Note 2)
3.4 in 30.6 in
8.64 cm 77.72 cm
(Note 2)
Technical Specifications A-7