User's Manual

InfiNet Wireless R5000 Technical User Manual
Copyright © 2004-2011 by InfiNet Wireless
46
lt rf5.0 <Mac-address of a device on the other side of the radio link>
When «ltest» command starts it will show you output information that contains
testing results. You can see Ltest output below:
For success radio link establishing the following factors have to be considered:
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 if autobitrate mode
will be enabled.
2. Current incoming signal level in «amp/max» columns (see “ltest”
command output) must be between 12 and 40.
When it is more than 40 it is recommended to lower amplifier power.
If maximal signal level is less than 12 it is recommended to lower bitrate
or channel width (for example, from 20MHz to 10MHz on the both sides
of the radio link).
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, number of undelivered packets and number of
undelivered acks. If the number of undelivered packets and the number
of undelivered acks is null, the number of retries is small and all these
parameters are constant in time then the radio link, most often, will be
operating properly.
3. Number of retries value in «rt%» columns must be as close to zero as
possible.
4. Number of undelivered packets value in «up%» columns must be zero; if
this value is not zero then the radio link couldn’t be exploited.