User's Manual

76
Copyright © 2004-2012 by InfiNet Wireless
changes. To clear the marks use “Clear History” button at the bottom of the
page.
Main recommendations when using “Antenna alignment tool”:
1. It is recommended to start antenna alignment with searching maximum
signal level on a minimal possible bitrate. Afterwards automatic MINT
mechanisms will set the most appropriate bitrate when “Autobitrate” mode
will be enabled.
2. Input signal level should be between 12 and 50. ATPC is recommended to be
enabled.
If signal level it is more than 50 it is recommended to lower amplifier power
(ATPC will do it automatically).
If maximal signal level is less than 12 it is recommended to lower channel
width (for example, from 20MHz to 10MHz).
In some cases signal level that is less than 12 may be enough for radio link
operation. In this case one has to be guided by such parameters as number
of retries and Error Vector Magnitude. If the number of retries is small and
EVM is more than 21 (Input Signal stripe is green) then the radio link, most
often, will be operating properly.
3. Retries value should be zero or as low as possible.
4. The top of an Input Signal stripe should be located in the black area.
5. The signal quality should be good: EVM value should be more than 21.
6. Input signals of the two antennas of the device should have similar Cross
fading values (Input Signal stripes should be located symmetrically relating
to the 0 dB value).
ALL described recommendations are applicable to both (Local and Remote)
sections.
Link samples:
• Good link sample
• Bad link sample