RU Antenna Alignment
TrangoLINK-10-EXT Professional Installation Guide
Trango Broadband Wireless – Rev. A
Page
8
Model No. PE34361-48
46” REVERSE POLARITY SMA MALE TO STANDARD N MALE
See the Radiowaves SPD3-5.2 User’s Manual for detailed hardware installation instructions.
Remote Unit Antenna Alignment
To align the RU antenna for optimal performance, follow the procedure outlined in the TrangoLINK-10 User
Manual. This procedure is also included below for your convenience. The same procedure applies to both the
P5830S-RU and the P5830S-RU-EXT.
Once the RU’s antenna is mounted 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. Telnet into the RU (while in opmode “OFF”) or access the radio via hyperterminal/serial port.
3. Type
command
RSSI <channel> <polarization>
- Example
RSSI 3 V
(chan. 3, vertical polarization)
4. Telnet session screen will begin a continuous readout of the received signal strength.
5. 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.
6. 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.
Once you are satisfied with the RSSI reading, tighten down the antenna in the optimum position. To stop the RSSI
continuous readout, hit SPACE ENTER.
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.)
