Cisco Systems ISM-BTS-R2, BTS-R3 Users Manual

Navini Networks, Inc. Ripwave Base Station I&C Guide

Chapter 2c

Install the RFS

Check all regulatory standards (refer to Chapter 1, Page 8 “Regulatory Information”) prior to installation. Now that the BTS is in place, the RFS is readied for installation. Follow the Panel or Omni Antenna information and procedures below. Reference the specifications in Appendix H.

Panel Antenna

The RFS Panel antenna is installed on a structure, such as a tower or a pole, which is defined in the site survey and design. Following are the steps to complete the installation of the panel antenna.

Verify RFS Operation

Verify proper operation of the RFS before installation . Test the transmit and receive path of each antenna in the RFS per Appendix S, and using the RFS System Test Form in Appendix O.

Set the Downtilt

Check the engineering study for the required downtilt of the antenna. The panel antenna has 6o of fixed electrical downtilt but it can be mechanically adjusted for an uptilt of 0 to 10o. As a result, the main lobe of the beam can be pointed between 4 degrees above and 6 degrees below the horizon.

Figure 28: Panel Antenna Elements

Weatherized

connectors

Mounting

Bracket

(downtilt

adjustment)

Part #40-00047-04 Rev F v1.0 (TTA) 61 October 23, 2003

Ripwave Base Station I&C Guide Navini Networks, Inc.

Chapter 2c

Omni Antenna

An Omni antenna has 2 degrees of fixed electrical downtilt

Figure 29: Omni Antenna Elements

Weatherized

connectors

Mounting

bracket

Ground

Cable Hoist

Set the Azimuth

Position the RFS on the mounting pole or structure, ensuring that the antenna is pointing in the proper azimuth direction determined by the engineering study. For an omni, the first antenna element must face East (Figure 30).

Figure 30: Bottom of an Omni Antenna Showing Correct Orientation

Make sure that

this arrow

points due East

62 Part #40-00047-04 Rev F v1.0 (TTA)

October 23, 2003

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