User`s manual

1-3
Using CCD Scanners
The CCD Scanner reads barcodes through the elongated front opening in the scanner. The
scanner is normally placed on the code so that the code is centered in this opening. When the
button on the bottom of the scanner is pushed, the scanner light source is switched on and
illuminates the barcode. A CCD (Charge Coupled Device), similar to that used in digital
cameras, registers an image of the barcode. A microcomputer within the scanner decodes
this image into the characters represented by the barcode, and sends them to the Keyboard
Wedge or RS-232 Interface. An audible tone is heard, the illumination is turned off, and an
indicator on the scanner flashes when the code has been read. The button can then be re-
leased.
CCD scanners usually work in contact, or close contact, with the barcode. The easiest way to
align the scanner with the code is to place the rectangular opening over the barcode. In many
cases a useful technique is to place the scanner on the surface containing the barcode, so the
code can be seen above the top of the scanner. With the button pressed, move the scanner up
on to the code until the tone sounds indicating a good read. Even though this model will work
up to 0.75 inch from the barcode, it is usually easiest to use it in contact.
CCD Scanners differ from laser scanners in that they form an image of the code rather than
scanning it. CCD scanners have no moving parts and the light source does not require the
safety precautions associated with a laser.
Mechanical Specifications
Weight: About 5 oz. (without cable)
Case: ABS Plastic
Dimensions: See Drawing