COULTER HmX Hematology Analyzer, Reference Manual

Page: 81 / 128

PN 4237523A 7-3
BAR-CODE SPECIFICATIONS
BAR-CODE LABELS
7
Bar-code labels used in the system must be grade C or better, according to American National
Standards Institute's guidelines, X3.182-1990.
Label Specifications
See Figure 7.1 for bar-code label specifications.
Figure 7.1 Bar-Code Label Specifications
IMPORTANT Use of bar codes is an extremely accurate and effective method of data capture. Certain
features, such as checksum digits, maximize accuracy in reading Codabar, NW7, Code 39, and Interleaved
2-of-5 labels. In one study, the use of checksum digits detected 97% of misread errors.
Use checksums to provide protection against occasional misread errors caused by problems such as
damaged or misapplied labels. If you must use bar codes without checksums, it is recommended that you
verify each bar-code reading to assure correct patient identification.
Leading edge of label
0.055"
0.005"
0.100 + 0.030"
0.062"
630-370
Label length
10X
min.
All subsequent bar lines parallel to first bar
line within 0.001"
Human-readable code
Placement
indicator
*
Maximum thickness of label +
adhesive = 0.006 ±0.003"
0.045 +0.045"
0.040 +
0.030"
First bar line parallel to leading edge within 0.002"
Trailing quiet zone
Code area
(Start character, data digits,
checksum, stop character.)
X= narrow element width
leading quiet zone
10X
min.
0.300"
min.
Label width
maximum 1.1"
minimum 0.40"
(You must leave at least 1/8"
so you can see tube contents.)