Lg GDK-20W Manuel d'utilisateur télécharger pdf (Page 45)

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

B. Base Station Broadcast Range and Location

Base Station Requirements

To determine the number of base station in a system, you should consider base station broadcast range.

2. Base Station Range

In a typical office environment, each base station has a broadcast range of 50 meters and supports an

area of 8,000 square meters, but a broadcast range depends entirely upon office environment. Where

the absence of any obstruction provides perfect line of sight conditions between the base station and

wireless terminal users and if there are no atmospheric limitations, the range may increase to 200

meters.

The following base station broadcast ranges can be used as a rough guide to plan the base station

positions:

z In line of sight, the base station has a range of about 200m.

z In hall, the base station has a range of 40-70m.

z In buildings, the base station has a range of about 25-40m. It assumes that walls are made of light

brick, plasterboard or wallboard with metal frames. Normal electrical wiring, central heating pipes,

office furniture and desktop computer equipment have no significant effect.

r = Typical office environment : up to 50 meters

r = Line of sight : up to 200 meters

Base Station

Figure 3.6.9 Base Station Service Area

The characteristic antenna field pattern is a tours(doughnut) centered on the antenna.

Figure 3.6.10 Base Station Antenna Field Pattern (Vertical)

3. Base Station Location on the Plan Drawing

Determine the location of the base station on the plan drawing according to the previous information

based on the base station broadcast range.

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Lg GDK-20W Manuel d'utilisateur Page 45