InfiLINK 2x2 / InfiMAN 2x2: Initial Link Configuration and Installation

04

Link installation, commissioning and evaluation

To complete the tasks in this chapter, we'll split into two teams. It's recommended to have at least two members in each group: one should make the signal readings and communicate with the remote end, the other should manipulate the antenna on the pole.

Make sure that all necessary equipment and tools are ready for the installation: the RJ-45 connectors are well-crimped, the length of the ETH cables is sufficient enough, the mounting kits are attached to the units, etc.

Task 1

Let's install the units on the poles, making sure that:

  • You apply the results obtained from the link planning for the available link model.
  • You avoid the installation in the proximity of other antennas by at least 2 meters.
  • There are at least 2 meters between the building rooftop and the antenna.
  • The antenna position is lower than the top of the pole by at least two antenna heights.
  • Connect the units (and antennas in case of connectorized models) to the grounding circuit.
Task 2

Let's configure at each unit (local and remote):

  • The maximum transmitted power (fixed, not auto).
  • The lowest bitrate level (fixed, not auto).

It's strongly recommended to perform the antenna alignment under these conditions.

Figure - Tx power & Tx bitrate

Task 3

Let's determine the best frequency to use by checking the radiation levels in the installation area (for both, local and remote locations):

  • Go to the "Spectrum Analyzer" section and:
    • Select the "Max Hold" option for the "RSSI mode" to monitor parasite signal activity.
    • Click on the "Start Sensor Test" keeping the default settings.
  • As soon as the scanning process has been completed, based on the obtained results, select a clear channel within the radio spectrum where:

    • Avg RSSI is below -90 dBm.
    • Noise is below -90 dBm.

Figure - Spectrum Analyzer

Task 4

Let's set the best frequency for both link ends, based on the results provided by the Spectrum Analyzer tool.


NOTE

In countries where Dynamic Frequency Selection (DFS) is required, set the frequency to “auto” on both units, then wait for the link to be re-established.


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