64 Use instructions
3.1.1.21 Max reflected power
The maximum reflected power permitted is 10% of the nominal power.
Here it is possible to set a lower value when required by the user.
Warning: in this case, correct operation of the foldback is not guaranteed.
3.1.1.22 SWR foldback setting
Foldback activation.
Algoritmo foldback
The Elenos devices feature two different and independent protections which are activa-
ted when there is excess reflected power.
The first is a hardware threshold which operates when the reflected power exceeds
10% of the maximum rated output power of the transmitter in a very short space of
time.
In these conditions the transmitter switches off.
The second is a software protection, called “foldback algorithm”.
It is activated when the reflected power increase is slower (for example, when there is
snow or ice on the antenna).
In these conditions, the transmitter gradually reduces its output power until the re-
flected power threshold is exceeded, while the output power is gradually restored
when the values go back to normal.
If normal operating conditions continue for more than 60 seconds, the algorithm is
inactive.
The activation of this second protection is left to the user (from the SWR foldback set-
ting screen).
3.1.1.23 No mains alarm setting
Setting the alarm, sent through an SMS, in the event of power failure for a set period of
time.
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