Bluetooth-adapter: types, characteristics, classes

Bluetooth adapters - modern useful gadgets to create an affordable wireless communication between different devices: tablets, mobile phones, smart phones, laptops, PCs, and the acoustic center TV. Adapters provide a reliable connection for fast exchange of useful information, files and work teams.

Stable and high-speed wireless protocol - Bluetooth. The choice of adapter depends on the specific tasks for the decision, which it is intended.

Features

Consumers often confuse two similar term - Bluetooth and Wi-fi connection. If Bluetooth technology is used for the remote transmission of data over short distances between different devices, the Wi fi technology is used to create a local area network and remote access to the Internet.

Similar technology is used for the rapid exchange of audio, video and text files, you can control the main memory, send and receive photos, manage the programs.

The module is connected without additional cables and transition elements, via a standard USB port. An advantage of the module is the possibility of data transmission at high speed. The modules are capable of establishing and maintaining wireless communication even under short wave interference occurring between the devices.

Kinds of Bluetooth adapters

Modern electronics made with the module installed, but there is equipment which It requires the use of additional equipment, because of their design and engineering features.

Bluetooth modules are of two types - internal and external. Each of them is different in the functional and installation method.

internal

This type of instrument is a system board that are connected directly to the internal circuitry of the reader. They are reliable, durable, but difficult to install. They are used for stationary PCs, laptops and speakers.

external

According to the design features of a similarity with USB drives - fits into any USB port. The module is suitable for modern electronic gadgets, television and video.

Ergonomically designed, easy installation and safe operation in combination with an affordable price, make these devices indispensable to create local wireless networks and any tasks difficulties.

Features bluetooth-adapters

based on Bluetooth technology compound represented 5 versions. Each version provides its data rate, the operating signal output stacks and profiles.

• 1.2;
• 2.0 + EDR;
• 3.0 + HS;
• 4.0;
• 4.1;

operational data transmission rate is 3-24 Mbit / s. Power technology has the following parts: 1; 2.5 and 100 MW. This component influences the coating performance with the same radius. The unit of measurement - Meter. Devices to 1 MW with actions 1 meter range. On the market are devices with capacity of 2.5 MW, with a radius of influence up to 12 meters.

The latest version of the equipment in the 4.1 provides coverage radius of up to 60 meters.

When choosing a device, should take into account the power and range.

Work profiles compound

Profiles - this functionality, which is supported by a variety of equipment.

bluetooth technology supports these profiles:

• GAP - is intended to support the work of other profiles, security and wireless settings.
• A2DP - designed to transmit audio signals in the dual stream. It is necessary for the exchange of audio files, listen to music.
• HSP - used for wirelessly connecting a headset (headphone, microphone) - mono sound transmission at speeds - up to 64 kbit / s.
• AVRCP - is used to control the sound on playback devices.
• LAP - is intended for the organization of a wireless network between two Bluetooth devices.
• DUN - the profile allows you to use the phone as a modem.
• HID - Connect headset - computer mouse and keyboard.
• OBEX FTP - a profile for connection to the memory of the mobile equipment with a flatbed and a laptop or PC.

Even if the transmitting and receiving devices support protocols used are taken into account when choosing codecs bluetooth equipment.

classes

Choosing equipment to create a wireless connection, it is recommended to take into account class nature.

The classes differ in the radiation range:

• Class 3 - radius of 1 m .;
• class 2 - radius 10 m .;
• class 1 - 100 m radius.

Selection of a suitable adapter model depends on the goals that are achieved by using. At the same time, useful functionality is determined by the profiles and protocols that are supported by the module.