2.8 Connection of 2.4 GHz Portable Stations
CS Coverage Area
The example below shows the size of the coverage area of 1 CS if it is installed where there is no obstacle.
Note
Radio signal strength levels are measured during the site survey (refer to "2.8.5 Site Survey").
A Coverage Area
Radio signal strength level is greater than "3".
(About 50 m to 60 m)
A
Gray Zone: Conversation will be intermittent
Radio Signal Strength Levels
B
BGood Coverage Area Radio signal strength level is greater than "8". (About 30 m to 40 m) Good conversation will be kept.
COut of Service:
Cannot make/receive calls
Level: 00
Level: 01 to 02
Level: 03 to 07
Level: 08 to 10
Level: 11 to 12
Out of range
Catches noise easily or disconnects May catch noise
Good
Better
Site Survey Preparation
1.Obtain the map and investigate the installation site.
a.Check the obstacles (e.g., shelves, columns, and partitions).
b.Check the materials of the structures (e.g., metal, concrete, and plywood).
c.Check the layout and dimensions of the room, corridor, etc.
d.Write down the above information to the map.
2.Examine the service area demanded by the user on the map, referring to the following example.
a.Draw the coverage area around a CS. Extend the coverage area to 30 m to 60 m in one direction, depending on the materials of the building structures and obstacles in the installation site. Note that a CS cannot be installed outside a building.
Installation Manual 113
