Motorola Canopy Backhaul Module - Manual (Page 48)

Alignment
The Alignment web page contains tools to assist in the alignment of a subscriber module to an
access point module. There are two modes that can be utilized when aligning a module: 1) RSSI
only and 2) normal alignment mode.
RSSI Only is a mode where the module will report the signal strength based on the amount of
energy present at a selected frequency. The subscriber module does not have to be registered to
an access point module for information on signal strength to be reported back. This can simplify the
aiming process for long links when the Canopy passive reflector (5.7GHz band only) is being used.
To utilize RSSI only mode:
• Choose the frequency to monitor from the pick list (this would be the same
frequency that the backhaul timing master module is transmitting on)
• Click the radio button to highlight “Enable” on RSSI Only mode
• Click “Enable Aiming Mode”
The module will now report back the level of RF energy present at that specific frequency. To
refresh the screen, click the
Enable Aiming Mode button as appropriate or configure the web page
auto-refresh option.
The normal operation of alignment mode will report information as it relates to the RSSI level and
Jitter value. To utilize normal alignment mode, ensure that the
Disabled radio button is checked
and then click Enable Aiming Mode button. As with the previous mode to refresh the mode either
continue clicking the Enable Aiming Mode button or configure the auto-refresh option. Also, during
normal alignment mode the LEDs on the outside of the Canopy module will report back information
on the performance of the link. There are 6 LEDs and when in alignment mode the LEDs are
turned into a 6-position bar graph. The more LEDs that are lit, the better the RSSI and Jitter values
the module is seeing. The colors of the LEDS have no particular meaning other than to assist is
distinguishing one position from the next.
The minimum values that are needed for an acceptable link are RSSI this above 700, Jitter that is
between 5 and 9, and link efficiencies that are greater than 90% in both the up and down link. If