User's Manual

APPENDIX B: SAFETY AND USAGE TIPS 69
Aiming Beam
Aim the laser so that the red beam covers the entire width of the bar
code.
Scanning Distance
• The optimal scanning distance varies depending on the bar code
size, symbology, label media, W-N Ratio, and scan angle. In
general, the Bluetooth CRS 9M can successfully scan 1.5 to 20
inches (3.8 to 51 cm) from the bar code, and the Bluetooth CRS
9P can successfully scan 1.5 to 45+ inches (3.8 to 144 cm) from
the barcode.
• The larger the barcode, the further away you should position the
scanner.
The thinner the bars of the barcode (more dense), the closer you
should position the scanner.
About Bluetooth and Health
Bluetooth wireless technology allows you to use short-range radio
signals to connect a variety of devices, such as bar code scanners,
mobile phones, Pocket PCs, notebook computers, printers, LAN
access points, and many other devices at home or work. These radio
signals replace the cables that have traditionally connected these
devices.
Bluetooth products have small radio transmitters and receivers.
Output power is normally very low, only 1 mW (1/1000 of a watt).
This gives a working range of approximately 10 meters.
The maximum exposure levels from Bluetooth products are far below
recommended safety guidelines. At most, typical Bluetooth devices
(1mW) reach only one percent of the prescribed safety levels.