User's Manual

99
Copyright © 2004-2012 by InfiNet Wireless
• -tu [seconds] – Unidirectional test: packets are transmitted only
from the current side to the specified address (“
target ” option)
• -tb [seconds] – Bidirectional test: packets are transmitted in both
directions
“
Seconds ” parameter allows setting test period (5 seconds by default). Maximum
value is 60 seconds.
To start Ltest in this mode:
lt rf5.0 <Mac-adress> -tb
“Ltest” command output in Bandwidth meter mode:
Muffer
The muffer module makes it possible to rapidly test the electromagnetic
environment, visually estimate the efficiency of the utilization of the air links,
reveal sources of interference, and estimate their power.
Several operating regimes of the muffer module provide for different levels of
details in test results
Review mode
This regime is enabled by the review option. It makes possible to have a general
estimation of emissions and interference within specified frequency range.
Normal operation of the radio is not possible in this mode.
This regime can be useful on the first steps of link configuration. One can
observe the activity on the selected list of frequencies and make decisions of
what frequencies can be used for the link so that the link did not interfere with
other sources of signals.
The scan is performed only for the packets corresponding with the
standard of the radio module (802.11a for 5GHz devices and 802.11b
for 2.4 GHz devices. Other sources of signals on the scanned
frequencies stay unseen.