Symbol Technologies 72E-86039-04 - Manual (Page 31)

Scanning 2 - 5
4. Center the symbol in any orientation within the aiming pattern. Be sure the entire symbol is within the
rectangular area formed by the brackets in the pattern.
Figure 2-11 Centering Symbol in Aiming Pattern
5. Hold the trigger until the digital scanner beeps, indicating the bar code is successfully decoded. For more
information on beeper and LED definitions, see
Table 2-1 and Table 2-2 .
This process usually occurs instantaneously. Steps 2 - 4 are repeated on poor quality or difficult bar codes, until the
bar code decodes, you release the trigger, or the Decode Session Timeout occurs.
Aiming
Hold the digital scanner between two and nine inches (depending on symbol density; see Decode Zones on page
2-7 ) from the symbol, centering the aiming pattern cross hairs on the symbol.
The aiming pattern is smaller when the digital scanner is closer to the symbol and larger when it is farther from the
symbol. Scan symbols with smaller bars or elements (mil size) closer to the digital scanner, and those with larger
bars or elements (mil size) farther from the digital scanner.
The digital scanner can also read a bar code presented within the aiming pattern but not centered. The top
examples in
Figure 2-12 show acceptable aiming options, while the bottom examples can not be decoded.
Figure 2-12 Acceptable and Incorrect Aiming
Linear bar code PDF417 symbol
Symbol
Aiming Pattern
1D bar code 2D bar code
0 1 2 3 4 5
0 1 2 3 4 5
0 1 2 3 4 5
0 1 2 3 4 5