Motorola DS9208, Руководство по продукции

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Data Capture 2 - 7
After a programmable time period (see Momentary Trigger Mode Timeout on page 4-16 ), the aiming dot turns
off and the digital scanner returns to presentation mode, ready to read bar codes without use of the trigger. For
beeper definitions, see
Table 2-1 .
Aiming in Momentary Trigger Mode
When scanning, the digital scanner projects a red aiming dot which allows positioning the bar code within its
field of view. See
Decode Ranges on page 2-8 for the proper distance to achieve between the digital scanner
and a symbol.
Figure 2-5
Imager Aiming Dot
If necessary, the digital scanner turns on its red LEDs to illuminate the target symbol.
To scan a symbol, center the aiming dot on the symbol, in any orientation.
Figure 2-6
Scanning Orientation with Imager Aiming Dot
The digital scanner can also decode with the aiming dot on a symbol but not centered. The top examples in
Figure 2-7 show acceptable aiming options, while the bottom examples may not be decoded.
Figure 2-7
Acceptable and Incorrect Aiming
The aiming dot 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 beeps to indicate that it successfully decoded the symbol. For more information on beeper
and LED definitions, see
Table 2-1 and Table 2-2 .
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