PSC LazerData Series 9000E, Installation And Operation Manual

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Series 9000E Scanner/Decoder
3-4
POWER REQUIREMENTS
The Series 9000E Scanner/Decoder is powered from a multiple-voltage
DC power source. Voltages required are +5 VDC @860 mA. and +12
VDC @ 300 mA. These voltages are supplied to the unit through a
keyed 5-pin power connector. The I/O Port is an alternate connection
for input power. For connector wiring consult Section 4, Signal
Interfaces.
SPECULAR REFLECTION
Bar code reading scanners can be blinded by specular reflections from
mirror-like surfaces on the bar code label and make it difficult or
impossible to obtain an accurate reading. This occurs when code
symbols are printed on glossy material or a plastic coating is applied
over the code symbol for protection. In general, if the bar code looks
shiny to the eye, it should be treated as a specular code. Specular
reflection can be eliminated by mounting the scanner at an angle
relative to the code. Angles of 10 to 15 degrees are normally used. Do
not tilt the scanner in the direction of the sweep, but perpendicular to
that direction. Figure 3-2 illustrates proper scanner mounting for bar
codes with mirror-like surfaces.
Scanner Mounting for Bar Codes with Mirror-Like Surfaces
Figure 3-2