Specifications

Installation and Initialization MP.11 5054 (MP11.a) Installation and Management
Installation Procedure
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Step 9: Align the Antenna
Antenna alignment is the process of physically aligning the antenna of the radio receiver and transmitter to have the best
possible link established between them. The antenna alignment process is usually performed during installation and after
major repairs.
Antenna Alignment Display (AAD) provides a measurement of signal quality in an easy-to-interpret manner—a numeric
printed signal value at the CLI and serial ports. The SNR is numerically displayed on the CLI or serial port by two decimal
characters representing a number from 00 to 99. On the serial port, AAD is enabled by default after booting.
To start the display, you must enable AAD and a wireless link must be established between the BSU and the SU.
Aiming is complete if moving in any direction results in a falling SNR value.
NOTES:
• Antenna alignment for the Base Station is useful only for a point-to-point link.
• The Antenna Alignment Display (AAD) CLI command is disabled automatically 30 minutes after it is enabled to
remove the load of extra messages on the wireless interface. The default telnet timeout is 900 seconds (15
minutes). If AAD must run for the entire 30 minutes, change the default telnet timeout value to a value greater
than 30 minutes (greater than 1800 seconds). This restriction is for telnet connections only and not for the serial
interface. The serial interface never times out; however, the AAD command does still time out.
Antenna Alignment Commands
• set aad enable local: Enables display of the local SNR. Local SNR is the SNR measured by the receiver at the
near end.
• set aad enable remote: Enables display of the remote SNR. Remote SNR is the SNR as measured by the
receiver at the far end.
• set aad enable average: Enables display of the average SNR. The average SNR is the average of the local and
remote SNR.
• set aad disable: Disables Antenna Alignment Display (Ctrl-C also disables AAD).