Symbol MC3000 - Page 149

Technical Specifications A-7
Table A-4. MC3000-R Laser Decode Ranges
Symbol Density/
Bar Code Type/
W-N Ratio
Bar Code Content/
Contrast (Note 1)
Ranges
Near Far
5.0 mil
Code 39; 2.5:1
ABCDEFGH+
80% MRD
2.0 in
5.08 cm
4.9 in
12.45 cm
7.5 mil
Code 39; 2.5:1
ABCDEF
80% MRD
1.6 in
4.06 cm
7.9 in
20.07 cm
10 mil
Code 39; 2.5:1
012345678905
80% MRD
1.2 in
3.05 cm
10.8 in
67.95cm
UPC A 123
80% MRD
1.3 in
3.30 cm
(Note 2)
12.7 in
32.26 cm
20 mil
Code 39; 2.2:1
123
25% MRD
1.4 in
3.56 cm
(Note 2)
17.9 in
45.47 cm
40 mil
Code 39; 2.2:1
AB
80% MRD
2.4 in
6.10 cm
(Note 2)
26.4 in
67.06 cm
55 mil
Code 39; 2.2:1
CD
80% MRD
3.4 in
8.64 cm
(Note 2)
30.6 in
77.72 cm
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