RU Antenna Alignment Procedure

Deployment & Installation

Weatherizing

!Important! If not using conduit, The Ethernet port compression washer on the 5830 series radios should be loosely tightened around the cat-5 cable to allow pressure equalization within the radio enclosure. Leave approximately 1 mm around the cat-5.

It is important to provide strain relief and drip loop for STP Cat-5 cables. Do not mount the

!radio upside down.

!Important! The J-Box is not a weatherized device and must be located either indoors or in a weather-protected cabinet.

RU Installation and Antenna Alignment

Once the MU is installed, and aligned in the correct general direction, it is time to install the RU. The hardware installation of the RU is identical to the MU, including considerations for line-of-sight, cable distances, cable type, weather sealing, and grounding.

Once the RU is installed and aimed in the general direction of the MU, it is time to perform an RSSI test to determine the signal strength from the MU, and to precisely align the RU antenna for maximum signal strength.

1.Ensure MU is in Opmode “ON.”

2.Connect to the RU from the Ethernet side via the Browser Interface.

3.Login and observe the RSSI indicator on the bottom left of the page. To update this value press the F5 key. Alternatively, from the Telnet command line interface, type the command rssi. As you read the RSSI reading, move the antenna in the horizontal and vertical planes until the maximum RSSI reading is achieved. For short links you can expect an RSSI of –60 dBm or better. For longer links and RSSI of –75 dBm is acceptable. Any RSSI of less than –80 dBm may be too weak for the radios to reliably associate and pass data.

4.If it is not possible to receive an adequate RSSI reading, it may be necessary to reorient the MU (up/down, left/right), to increase the output power of the MU, or to move the RU to a location with better line-of-sight conditions to the MU.

5.Once you are satisfied with the RSSI reading, tighten down the RU in the optimum position.

Note: The amber light on the bottom of the RU will also indicate RSSI according to the following parameters:

RSSI< -80dBm	not lit
RSSI > -80dBm	blinking
RSSI ≥ -65dBm	solid (blink rate increases with signal strength)

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

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