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MN002858A01-A
Chapter 8: Wireless
4 In the Wi-Fi networks list, tap and hold the name of the network.
5 In the menu, tap Forget network.
6 Tap
.
8.3
Bluetooth Device
Bluetooth-equipped devices can communicate without wires, using frequency-hopping spread
spectrum (FHSS) radio frequency (RF) to transmit and receive data in the 2.4 GHz Industry Scientific
and Medical (ISM) band (802.15.1).
Bluetooth wireless technology is specifically designed for short-range (10 meters (32.8 feet) )
communication and low power consumption. Devices with Bluetooth capabilities can exchange
information such as files, appointments, and tasks with other Bluetooth enabled devices such as
printers, access points, and other mobile devices.
The LEX L10g supports a variety of Bluetooth accessories and supports remote radio control over
following Land Mobile Radios:
•
APX 6000
•
APX 6000XE
•
APX 7000
•
APX 7000XE
•
APX 7000L
8.3.1
Adaptive Frequency Hopping
Adaptive Frequency Hopping (AFH) is a method of avoiding fixed frequency interferers, and can be
used with Bluetooth voice. All devices in the piconet (Bluetooth network) must be AFH-capable in order
for AFH to work. There is no AFH when connecting and discovering devices. Avoid making Bluetooth
connections and discoveries during critical 802.11b communications.
AFH for Bluetooth consists of four main sections:
•
Channel Classification - A method of detecting an interference on a channel-by-channel basis, or
pre-defined channel mask.
•
Link Management - Coordinates and distributes the AFH information to the rest of the Bluetooth
network.
•
Hop Sequence Modification - Avoids interference by selectively reducing the number of hopping
channels.
•
Channel Maintenance - A method for periodically re-evaluating the channels.
The Bluetooth radio in this device operates as a Class 2 device power class. The maximum output
power is 2.5 mW and the expected range is 10 meters (32.8 ft.). A definition of ranges based on power
class is difficult to obtain due to power and device differences, and whether one measures open space
or closed office space.
NOTICE: It is not recommended to perform Bluetooth wireless technology inquiry when high
rate 802.11b operation is required.
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