Ubee DDW366 Guide de l'utilisateur télécharger pdf (Page 58)

3.9 Wireless Network Deployment and Troubleshooting Ubee Interactive

54 DDW3612 Subscriber User Guide • July, 2010

Formula:

(Transmit Power, use -30dBm) – (Receiver Sensitivity, use RSSI value) =

Allowable Free Space Loss

Allowable Free Space Loss ÷ Materials Attenuation Value = Optimal Distance

in Feet Between the Cable Modem and a Wireless Client

Example:

(-30dBm) - (-67dBm) = 37dBm (allowable free space loss for a 54Mbps

connection)

37dBm ÷ .24db/foot (for open space) = 154.16 feet

6. Once you know the optimal feet distance between individual wireless clients and

the wireless cable modem, you can resolve and prevent some performance issues.

7. To check the wireless signal strength and speed, use the following steps for a

Windows computer connected wirelessly to the wireless cable modem. If the

wireless computer is not connected, refer to “Connect/Validate Wireless Clients”

on page 10.

 Double-click the Wireless networking icon in the system tray.

 Review the speed and signal strength in the Status window.

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Ubee DDW366 Guide de l'utilisateur Page 58