Configuring Bluetooth

Many people find setting up a Bluetooth connection very problematic and frustrating. Though, once connected they 'just work' and are soon forgotten. These pages will help you get over that initial hurdle and get on with using PDA for what it was purchased.

Currently these pages are under construction, but we hope to soon have detailed setup guides for most popular combinations of PDA/Laptop for access to GPRS, LAN and Synchronization.

	What is Bluetooth?
	Bluetooth Devices

What is Bluetooth?

Bluetooth is a short range - very low power digital radio link designed to replace wires between computer devices, peripherals and mobile phones.

Range
Typical range is approx. 10m, though some device combinations will only work up to 3m and others to 150m. Turning the power down on the Bluetooth device to preserve batteries will also reduce range.

Types of Bluetooth connection
When connecting two Bluetooth devices you must specify the connection type, these include:

• Serial Port
• Dial Up Networking connection
• Fax
• File Transfer
• Network Access
• Information Synchronization
• Audio

Pairing

This is the process of setting up a semi-permanent, secure connection between two Bluetooth devices and is often one of the most problematic features- especially as different manufactures implement this in different ways. Devices are "Paired" (sometimes called Bonded) by setting one device into its "discoverable" mode and then telling the other device to discover it. The discovering device searches the Bluetooth radio band until it finds the second device, then it asks you to enter a security code. Once entered the other device then asks for the security code and if they match the connection is made. Once completed, each time the devices are in range the connection will be remade without any more user intervention.

Discovering

This is the process where one Bluetooth device broadcasts a radio message asking if other Bluetooth devices are present. Many Bluetooth devices regularly search for other devices maintaining a list of those within range.

Discoverable

You can instruct your Bluetooth device whether to 'listen' for the discovery radio broadcasts or remain quiet. Many devices as a default will allow others to see them - but you should ensure security is switched on so that connections cannot be setup without your knowledge.

 

Bluetooth Devices

Multi Media Card The "PALM" Bluetooth Multi Media Card plugs into the memory expansion slot on the "m" range of PALM devices. The picture shows the card installed, sticking out the top of the m515. Because it sticks out so far, to prevent damage you will generally remove the card every time you put the PALM in your pocket.
CF Card/PC Card A number of manufacturers produce CF card Bluetooth modules, these will fit directly into your PDA's CF slot (or its expansion jacket). They are often used with a PC-Card adapter to fit in Laptops or older PDAs.
Expansion Modules - PALM Even though many older PALM devices do not have a memory card slot for the PALM Bluetooth module, they can still be upgraded with clip-on module such as the Blue M and Blue 5 from TDK Systems (fitting both PALM's "V" and "m" ranges.) If your PALM does have a memory slot then these modules can still be used with a nice big memory card in the memory slot. The modules have a convenient 'hotsync' button which mimics the action of the button on your PALM cradle, initiating a hotsync session with you PC.
Expansion Modules - PocketPC The Compaq IPAQ leads the way with PocketPC expansion jackets. For example, the TDK Systems module (pictured right) provides Bluetooth and a CF card memory slot in a neat, robust slip - on module.
USB To upgrade your laptop or desktop PC the USB connection makes a convenient way of connecting with Bluetooth. To maximize range position the Bluetooth antenna away from the PC preferably with line-of-site to the potential users. With good positioning you should be able to increase the workable range far above the often quoted 10m up to a maximum of 50m under ideal conditions.
PC Card For small office/home office applications Bluetooth makes sense for use as a wireless LAN. It's low power consumption and compatibility with all your mobile devices make it a good choice for standard office applications.