Aironet PC3500 Guia do Utilizador descarregar pdf (Página 18)

Radio Characteristics

The PC3500 uses a radio modulation technique known as

Frequency Hopping Spread Spectrum (FHSS) transmission. It

combines high data throughput with excellent immunity to

interference. The PC3500 operates in the 2.4 GHz license-free

Industrial Scientific and Medical (ISM) band. Data is

transmitted over a half-duplex radio channel operating up to

2 Megabits per second (Mbps).

Radio Ranges

This section provides general guidelines on factors that

influence network performance (see Section 4 - Site Survey

and Link Test).

Site Survey

Because of differences in component configuration, placement

and physical environment, every network application is a

unique installation. Before installing the system, users should

perform a site survey in order to determine the optimum

utilization of networking components and to maximize range,

coverage and network performance.

Here are some operating and environmental conditions that

need to be considered:

• Data Rates. Sensitivity and range are inversely

proportional to data bit rates. The maximum radio range is

achieved at the lowest workable data rate. There will be a

decrease in receiver threshold as the radio data rate

increases.

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Aironet PC3500 Guia do Utilizador Página 18