Alvarion BreezeACCESS II CX, System Manual

Page: 65 / 78

Aligning the SU’s Antenna
NOTE
If you are h indicator is not aving difficulties in obtaining a good RSSI, since the RSSI bar
precise, it is recommended nuous Lin lay test for that you use the Conti k Quality Disp
more precise alignment of the antenna.
NOTE Applicable only to BreezeACCESS VL SU
In some cases, the antenna of the BreezeACCESS VL SU may need to be tilted to
ensure that the level at whi
ns from the AU (and vice ch the SU receives transmissio
versa) is not too high. As a rule of thumb, if the SU is located at a distance of less than
300 meters from the AU, it
up-tilt the antenna by approximately 10
°
is recommended to
to 15
°
. To guarantee a safety margin from the saturation level (received signal of –
40dBm at the antenna port), the SNR should not be higher than 50dB. The orange LED
of the SNR bar indicates that the SNR is higher than 50dB.
Manual Revision 1.0
3-15