Trango Broadband TrangoLink-10 user manual Deployment & Installation, Site Selection, Site survey

Deployment & Installation Site Selection

Chapter 4 Deployment & Installation

Once you are familiar with the basic operation of the radios you are ready for deployment in the field. The deployment process consists of the following steps:

•Site Selection

•Site survey at MU and RU sites

•MU installation

•RU installation and antenna alignment

•Link test

Site Selection

Proper site selection for your MU will help ensure a successful deployment. Site selection will depend on a wide variety of factors, but from the radio’s performance standpoint, please consider the following:

•Path from MU to RU should provide unobstructed line-of-sight (LOS), thus it is advisable to place MU as high as possible on a tall building or tower.

•Ethernet cable limit is 100 meters from Ethernet device (router, switch) to radio.

•Radios should never be deployed without proper grounding.

•Consider nearby sources of interference that could degrade the performance of the radio. Mount radios as far from sources of interference as possible.

Site survey

Both the MU and RU provide an on-board site survey tool. This tool will tell you if there is any interference present in the 5.8 GHz band.

To use the survey tool, the radio must be in Opmode “OFF.” The survey can be performed for any specified amount of time (in seconds), and for either the horizontal or vertical polarization.

Prior to performing the site survey, place the radio in the installation spot, and aim the radio in the desired direction.

After the specified period, the results of this command will provide you with a listing of each channel in the band, the average signal received, and the maximum signal received during the survey period.

In general you will be looking for frequencies with signal strengths of –85 dBm or lower. If interference is present on various channels, it is recommended that you chose clean channels or alternate polarizations for your deployment. If it is not possible to use a clean channel/polarization combination, there are various methods available to mitigate the affects of interference. These methods include the use of the RFRX THRESHOLD settings, or the use of external shields on the MU. See the site survey example on following page.

Trango Broadband Wireless — TrangoLINK-10 User Manual Rev. E 3.0 page 17