Cabletron Systems 9033073 manual Dynamic Range Budget

Calculating Range & Clearance

The Dynamic Range Budget

The Dynamic Range Budget

The Dynamic Range Budget is the sum of the following factors as determined at both ends of the wireless outdoor link:

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Type of RoamAbout Outdoor Antenna:

—RoamAbout 7-dBi Omni-Directional Antenna, or

—RoamAbout 14-dBi Directional Antenna

Length of the Antenna Cable required to connect the RoamAbout Access Point to the outdoor antenna.

Type of RoamAbout PC Card used1:

—The RoamAbout PC Card with the black-background label, or

—The RoamAbout PC Card with the white -background label.

To determine the Dynamic Range Budget that applies in your situation, use either Table D-1 on page D-3, or Table D-2 on page D-4 (subject to radio regulations that apply in your country):

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Use Table D-1, for the USA, Canada, and any other country that adheres to the radio regulations as defined by the United States Federal Communications Commission (FCC).

Use Table D-2, for all European countries, Japan, and any other countries that adhere to the radio regulations as defined by the European Telecommunications Standards Institute (ETSI).

To determine the Dynamic Range Budget, use the horizontal axis of the table to select the equipment installed in building X, and the vertical axis to select the equipment in building Y.

1The choice of this card is subject to local radio regulations (see Selecting the Right RoamAbout PC Card on page 2-3).

D-2 Outdoor Antenna Installation Guide