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Deployment & Installation Weatherizing
Trango Broadband Wireless — TrangoLINK-10 User Manual Rev. E 3.0 page 21
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.
RU Antenna Alignment Procedure
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)