4 - 2
When data is scanned, the data is sent to the host system via the base. The cordless scanner recognizes data acknowledge-
ment (ACK) from the base. If it cannot be determined that the data has been properly sent to the base, the scanner issues an
error indication. You must then check to see if the scanned data was received by the host system. If data has not been properly
sent to the host, additional scanner configurations may be needed. Contact Technical Support (page 14-1) for additional infor-
mation.
RF (Radio Frequency) Module Operation
The cordless system uses a two-way Bluetooth® radio utilizing adaptive frequency hopping (AFH) to transmit and receive data
between the scanner and the base. Designed for point-to-point applications, the radio operates using a license free ISM band.
This band sends relatively small data packets at a fast data rate over a radio signal with randomly changing frequencies. This
makes the cordless system highly responsive to a wide variety of data collection applications and resistant to noisy RF environ-
ments. The Bluetooth Class 2 power level provides a communication range of 33 feet (10m) between the scanner and base,
depending on the environment.
System Conditions
The components of the cordless system interact in specific ways as you associate the scanner with its base, as you move a
scanner out of range, or bring a scanner back in range. The following information explains the cordless system operating condi-
tions.
Linking Process
Once a scanner is placed into a base, the scanner’s instant charge pack charge status is checked, and software automati-
cally detects the scanner and links it to the base depending on the selected link mode.
Scanner Is Out of Range
The cordless scanner is in communication with its base, even when it is not transmitting bar code data. Whenever the
scanner can’t communicate with the base for a few seconds, it is out of range. If the scanner is out of range and you press
the scanner button, the scanner issues an error tone indicating no communication with the base. Refer to Out-of-Range
Alarm, page 4-7.
Scanner Is Moved Back Into Range
The scanner relinks if the scanner or the base have been reset, or the scanner comes back into range. If the scanner
relinks, you will hear a two tone beep sequence when the relinking process is complete. Refer to Out-of-Range Alarm on
page 4-7 for further information.
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