Specifications

Chapter 3 - Commissioning Aligning the Subscriber Unit Antenna
BreezeACCESS 4900 54 System Manual
3.2 Aligning the Subscriber Unit Antenna
The SNR bar display is located on the bottom panel of the outdoor unit. The ten
LEDs indicate the quality of the received signal. The higher the number of green
LEDs indicating On, the higher the quality of the received signal. This section
describes how to align the Subscriber Unit antenna using the SNR bar display.
For optimal alignment, it is recommended to use the Continuous Average
SNR/RSSI Display option (see “Continuous Average SNR/RSSI Display” on
page 98). It is recommended to also verify the quality of the uplink using the
Continuous Uplink Quality Indicator Display option (see “Continuous UpLink
Quality Indicator Display” on page 99) when there is traffic in the uplink.
1 Align the antenna by pointing it in the general direction of the Base Station.
2 Verify that the power indication of the unit ( / ) is On.
3 Verify that the W-LINK LED ( / )of the ODU is On, indicating that the unit
is associated with an Access Unit. If the W-LINK LED is Off, check that the
ESSID and Frequency parameters are correctly configured. If the SU is still
not associated with the AU, increase the transmit power level to its maximum
value. If the unit is still not associated with the AU, improve the quality of the
link by changing the direction of the antenna or by placing the antenna at a
higher or alternate location.
NOTE
The behavior described above for the bar is called Normal Mode and is enabled by default.
However, the LEDs’ behavior can be customized by the user (see
“LED Mode” on page 87). If
this is the case, make sure that Normal Mode is enabled prior to aligning the antenna.
:
NOTE
Antenna alignment using the SNR bar display or the Continuous Average SNR/RSSI Display is
possible only after the Subscriber Unit is associated with an Access Unit. The associated Access
Unit must be operational and the basic Subscriber Unit parameters must be correctly configured.
Otherwise, the unit will not be able to synchronize with the Access Unit. As the SNR measurement
is performed on received frames, its results are meaningless unless the Subscriber Unit is
associated with an Access Unit.
To align the Subscriber Unit antenna: