Socket Mobile Series 9 - Manual (Page 6)

About Combining Scanning with Bluetooth
The Cordless Ring Scanner represents an optimal combination of proven
laser bar code scanning technology and state-of-the-art Bluetooth
connectivity. Because of the problems inherent in the intermittent storage of
scanned data in on-board memory if the Bluetooth connection is lost, the
CRS is designed to operate only when connected to the host, with the
powerful Class 1 radio providing the maximum possible connection range.
The user is advised of the connection status with a single beep when the
CRS connects to the host and a double beep when the connection is closed
or lost. As with any wireless device, connectivity range can be affected by a
variety of environmental variables.
The most likely source of errors in any cordless scanning system is not in
the scanning and decoding process, but in the transmission of the data to the
host. To prevent such errors, the Cordless Ring Scanner features Socket’s
exclusive Error Proof Protocol
™ (patent pending), which ensures that
scanned data is correctly received by the host computer and allows for real-
time validation of data and notification to the user in case of errors.
The beeper and green LED signals provided by the CRS confirm not only a
successful scan but also the successful transmission of the scanned data to
the host. Users familiar with bar code scanning may notice a slight delay
between the successful scan and shut off of the laser, and the beep and
green LED from the CRS confirming completed transmission of the data. In
most instances, this delay is less than 300 ms (milliseconds), but may be
slightly longer as the connectivity range limit is approached.
Because of the two-way transmission verification process, it is possible to
cause communication problems by scanning bar codes as fast as possible.
When this occurs, all transmissions will stop for several seconds before
scanning can be resumed. To prevent this from happening, the user should
wait until the confirming beep is received before scanning the next bar
code.
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