User's Manual

A: Slave units are all devices in a Piconet that are not the master. The slaves receive frequency-hopping
sequences from the master and rely on the master’s clock for the timing of the Piconet.
Q: What is a Personal Area Network (PAN)?
A: A Personal Area Network is another name for a Bluetooth Piconet.
Q: Are different brands of Bluetooth products compatible?
A: Yes. The Bluetooth Logo Certification Program requires Bluetooth products to interoperate with products
manufactured by other vendors; those products that don’t interoperate will not be allowed to use the Bluetooth
logo. All of Xircom’s Bluetooth products will be certified and carry the Bluetooth logo guaranteeing their
interoperability.
Q: Will other RF (Radio Frequency) devices interfere with Bluetooth Devices?
A: No. Bluetooth radios operate on the unlicensed 2. 4 GHz (Industrial, Scientific and Medical) frequency band
that is shared among other devices (microwave ovens, cordless phones, garage door openers, etc.). Bluetooth
radios switch frequencies at such a rapid pace (1,600 times per second) and the data packets are so small that
interference from other RF sources is highly unlikely. Bluetooth is a robust communication system.
Q: Will Bluetooth and Wireless LAN (WLAN) interfere with each other?
A: No, both Bluetooth and WLAN can co-exist. Since Bluetooth devices use frequency hopping and most WLANs
use direct sequence techniques, they each appear as background noise to the other and should not cause any
perceivable performance issues.
Q: What is the data throughput speed of a Bluetooth connection?
A: Bluetooth transfers data at a rate of 721 Kbps, which is from three to eight times the average speed of parallel
and serial ports, respectively. This bandwidth is capable of transmitting voice, data, video and still images.
Q: Is Bluetooth technology only applicable for notebook computers?
A: No. Bluetooth functionality is ideal for a variety of cable replacement uses for mobile and desktop computing
solutions and peripherals. Product manufacturers belonging to various industries (automotive, appliance,
electronics, etc.) are in the process of integrating Bluetooth into their products.
Q: What is the Bluetooth Special Interest Group (SIG)?
A: The Bluetooth SIG is a group of companies, led by telecommunications and computing industry leaders,
working together to define and promote an open, royalty
-free specification for seamless wireless connectivity and
cable replacement for a wide variety of mobility-enhancing devices. This group defines a certification program for
products that desire to use the Bluetooth logo. For more information visit their web site at: www.bluetooth.com.
Q: Is Bluetooth practical for use with mobile devices?
A: Yes. One concern for mobile computing users is power consumption. Bluetooth radios are very low power,
drawing as little as 0.3 mA in standby mode and 30 mA during sustained data transmissions. Bluetooth radios
alternate among power-saving modes in which device activity is lowered to maximize the mobile power supply.
Q: Are there any adverse health effects caused by Bluetooth transmitters?
A: No. Bluetooth transmitters are very low power and have been deemed safe for use. Bluetooth transmitters
operate at lower power levels than cellular phones and pose no health risks. Bluetooth products must meet
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Xircom Bluetooth Adapter
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Introduction
6/22/2001
file://C:\Compliance\Manuals\R2BT\En\help\intro.htm