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M3SR Series 4100
4.4.5.13
Switching the LQA Mode On or Off
Softkey
Operating Manual 6175.4760.02 – 01
Type
Toggle
Switching the LQA Mode On or Off
Description
1. Press softkey to toggle the LQA mode on
/ off.
Possible values:
•
off
•
on/Period LQA Sounding
•
on/Periodic LQA Exchange
Choose the 'LQA MD' (link quality analysis
mode) according to the following hints.
When switched off, the signal-to-noise ratio is
analyzed for ALE traffic only. This setting is
suitable for good propagation conditions and
heavy ALE traffic, but can increase the needed
link setup retries, it can even reduce the link
reliability.
A better choice is the periodic LQA sounding,
where specific sounding calls are transmitted
to allow automatic signal-to-noise ratio mea-
surements at the other stations, improving the
search for the best channel.
Best link setup results are to be expected with
periodic LQA exchange. The measured LQA
values are exchanged with the station select-
ed in the exchange List, see softkey 'EXL' be-
low this key.
But please note that LQA exchange com-
pared with short selection of 'Sound Inter-
vals' (see softkey above) can result in high
traffic on the ALE channels.
4.103
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