User guide

45 Mbps Backhaul User Guide
Issue 3, December 2004 Page 29 of 113
has been established. The Master unit will only move to the Synchronized state when the range of the link has
been established.
If at the end of the ranging period the Registered state is not achieved due to interference or other reasons, the
Master unit will retry twice more on the same channel before moving to another available channel. Should this
occur it might take a number of minutes to establish a link in the Registered state.
The Slave unit does not have a ranging process. The slave unit will change to the Synchronized state as soon as
the wanted signal is demodulated.
When the alignment process is complete the installer MUST REMEMBER TO DISARM BOTH UNITS in the
link as described in section 6.3.3. This is necessary for the following:
Turn off audible alignment aid.
Enable Adaptive Modulation
Fully enable Dynamic Frequency Selection
5
Clear unwanted installation information from the various systems statistics
Store the link range for fast link acquisition on link drop
Enable Higher Data Rates
4
If the unit is operating in region 4 (the UK) the radar avoidance algorithms may affect the ranging
behavior for the 45 Mbps Backhaul. If a radar is detected during any of the installation phases a
compulsory 60 seconds channel scan will take place as the master unit attempts to locate a new
channel.
5
Full Dynamic Frequency Selection is not available in region 4 (the UK).