1.14 What are the Bluetooth profiles supported by Logitech products?
Logitech products support the following profiles:
Profile Allows you to…
Human Interface Device Connect your Bluetooth HID with the system.
Object Exchange Send and receive business cards/files between the device and
the computer.
Synchronize Synchronize your address book on the device with the computer.
Headset Listen to music on your Bluetooth headset.
Basic Imaging Send pictures to the computer from the device.
Dial-up Network Connect to the internet via GPRS.
Hard Cable Replacement Print documents on your Bluetooth printer.
Serial Port Connect to the device's serial port.
Audio Gateway Use the computer's speakers and mic for the device.
AV Listen to music on your stereo headset.
Local Area Network Connect computers wirelessly.
File Transfer Browse the content of the device.
1.15 What is a Bluetooth "stack"?
A stack is a piece of software that is installed on your computer. It allows Bluetooth devices to be
recognized and used. Currently, a Bluetooth stack is required due to the fact that Windows XP and
Windows 2000 do not natively support Bluetooth. A Bluetooth stack is provided with all Logitech
Bluetooth desktop.
1.16 Which Bluetooth stack (software) is used in Logitech products?
The Bluetooth stack we are using is provided by Broadcom (also known as "BTW"); it allows Bluetooth
devices to be recognized and used. Logitech Desktops also support the Microsoft XP SP2 Bluetooth
stack. However, for optimal performance, we recommend you use the Bluetooth stack provided with
your product. For instance, Microsoft is not currently offering Audio support with its stack, and
therefore you are not able to connect a Bluetooth headset to your Bluetooth hub anymore.
1.17 Is Bluetooth harmful?
Wireless phones and Bluetooth devices both emit non-ionizing radiation, typically at frequencies
from 1 to 2.5 GHz. The data results on health hazards from wireless phone radiation are not
clear-cut, with some studies showing a measure of risk and some showing no problems.
But because it's a good idea to err on the side of caution in such matters, regulatory bodies have
set exposure standards. These are expressed in terms of the "specific absorption rate" (SAR), which
attempts to measure the radiation actually reaching body tissue. The U.S. and Canadian
governments have set a maximum SAR of 1.6 watts per kilogram, while the European Union
permits a slightly higher level. In the real world, emissions generally stay well below the
maximum allowed. According to data from BlackBerry-maker Research in Motion (RIMM), SARs
for GSM BlackBerry devices fall in the range of 0.25 watts per kilogram when used at your ear.
© 2005 Logitech, Inc. Bluetooth FAQ 5
Version 2.0
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