User's Guide

20 Active Tests 67
7signal Ltd, Panuntie 6, FI-00620 HELSINKI, FINLAND, [phone], [e-mail], www.7signal.com
7signal Sapphire Carat Carat User Guide Release 3.0
For more information on interpretation of the test results, see the description of
mean opinion score, MOS, at http://en.wikipedia.org/wiki/Mean_Opinion_Score.
Test result
5
Excellent
4
Good
3
Fair
2
Poor
1
Bad
In practice, the supported codec’s can reach MOS scores that are slightly above 4.
20.10 “Air Utilization” test
To capture spectrum heavy-users and misconfigurations – such as extensive use of legacy
codecs - in the wlan network, air utilization test should be run. This test is not part of the test
profiles as it is lengthy troubleshoot test. Special attention to the test parameters is required
as the maximum runtime is easily very high. One should check the “aggregate time” box for an
estimate.
To run the test:
1. Select antennas, at least one must be selected.
2. Select the desired channels with the check-boxes.
3. Select the time – in minutes – to listen to each selected channel on each selected
antenna.
The result is a table that has each antenna/channel combination as one row. One will get
simple table result by activating each row with the mouse. There shall be more detailed result
if “Show graph” is selected for the activated row: