bility of the user to obtain and use a shielded equipment interface cable with this device. If this equipment has more than one interface connector, do not leave cables connected to unused interfaces. Changes or modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipment.

For European Users

This product is in conformity with the protection requirements of EU Council Directive 89/336/EEC on the approximation of the laws of the Member States relating to electromagnetic compatibility. TROY Group cannot be responsible for any failure to satisfy the protection requirements resulting from a nonrecommend- ed modification of the product.

This product has been tested and found to comply with the limits for Class B Information Technology Equipment according to CISPR 22/European Standard EN55022. The limits for Class B equipment were derived for typical residential environments to provide reasonable protection against interference with licensed communications devices.

For Canadian Users

This Class B apparatus complies with Canadian ICES-003.

Cet appareil numérique de la class B est conforme à la norme NMB-003 du Canada.

DECLARATION of CONFORMITY

According to 47CFR, Part 2 and 15 for Class B Personal

Computers and Peripherals; and/or CPU Boards and Power

Supplies used with Class B Personal Computers:

We:

TROY GROUP, INC.

Located at:

1692 Browning

 

Irvine, CA 92606 USA

Declare under sole responsibility that the product identified herein, complies with 47CFR Part 2 and 15 of the FCC rules as a Class B digital device. Each product marketed, is identical to the representative unit tested and found to be compliant with the standards. Records maintained continue to reflect the equipment being produced can be expected to be within the variation accepted, due to quantity production and testing on a statistical basis as required by 47CFR §2.909.

13-2

Page 57 Page 59
Page 58
Image 58
TROY Group 802.11b manual For European Users, Declaration of Conformity
Page 57 Page 59

802.11b specifications

TROY Group 802.11b is a significant advancement in wireless networking technology, introduced in the late 1990s. Operating within the 2.4 GHz frequency band, 802.11b provided users with robust connectivity and established a foundation for future wireless standards. This protocol marked a transition from wired networking to wireless, enabling greater mobility and flexibility for users.

One of the main features of the 802.11b standard is its data transmission rate, which supports speeds of up to 11 Mbps. While this may seem modest by today’s standards, it was a groundbreaking achievement at the time. The 802.11b technology utilized Direct Sequence Spread Spectrum (DSSS) modulation, which allowed multiple data streams to coexist with minimal interference. This was crucial in environments with numerous wireless devices.

Security was another important consideration, and 802.11b incorporated Wired Equivalent Privacy (WEP) for data protection. WEP attempted to secure wireless transmissions by encrypting data packets, although it was later found to have vulnerabilities. Nevertheless, it was a starting point for securing wireless communication until more robust security protocols, such as WPA and WPA2, were developed.

The compatibility of 802.11b with earlier standards like 802.11 meant that devices could be mixed and matched, allowing for a smooth transition to wireless networks. With a typical range of around 100 to 300 feet, it was suitable for various environments, from homes to offices. In addition, the protocol facilitated peer-to-peer networking, allowing devices to communicate directly without the need for an access point.

In terms of hardware, 802.11b required compatible wireless network interface cards (NICs) and access points. These devices were increasingly integrated into laptops and desktops, leading to widespread adoption and the growing popularity of wireless networking in everyday life.

In conclusion, TROY Group 802.11b laid the groundwork for modern wireless communication. Its features, including data rates of up to 11 Mbps, DSSS modulation, and initial security measures like WEP, made it a pioneer in the industry. Although it has been succeeded by faster and more secure protocols, the legacy of 802.11b lives on as a crucial development in the evolution of wireless technology, setting the stage for the high-speed and secure connections that users enjoy today.
Top Page Image Contents