User manual

CCD Operation and Bar Code Scanning A–3
Microprocessor
The microprocessor controls the generation of timing signals required for the operation
of the SCANTEAM 3700 device. Additionally it monitors the digital output of the
device, configures the operating parameters sent through serial commands (as required),
and decodes the scanned bar code data.
Timing Sequence
Figure A.2 illustrates the timing sequence for the SCANTEAM 3700.
Shift Out Analog Data
Illumination
Timing
White
Black
Analog Signal from CCD Array
Digital Data Out
White
Black
Bar Code Symbol
Being Scanned
Decoded Data (Decoded Output Only)
Figure A.2 SCANTEAM 3700 Timing Sequence