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Nesis III User's Manual
• The Random option shall be avoided. It will generate a different
address on every device restart.
5.4.3
ADS-B Settings
These settings group is related with transponder and ADS-B settings. Ac-
cording to our experiences, only Power Flarm accepts these settings properly.
Transponder type defines the type of the transponder built-in the aircraft.
ADS-B warnings can be enabled or disabled. The device listens to ADS-B
squitter responses of other aircraft all the time and it processes this
information. When warnings are disabled, no warnings like shown on
Figure 43 for ADS-B based traffic will be given. However, the position
of ADS-B traffic will still be transmitted, depending on their range.
Use Mode-S altitude When this is enabled, the device will try to use al-
titude detected by aircraft's own Mode-S transponder for calculation
of vertical distances. When disabled, device will use altitude based on
its own barometric pressure sensor. The own transponder detection is
based on transponder 24 bit ICAO address. This address was entered
in section 5.4.2.
Process Mode-C targets enables/disables processing of Mode-C transpon-
der responses. Position of these targets is not known (so called non-
directional targets) and the distance is only estimated from the signal
strength. Most small general aviation aircraft are equipped with Mode-
C transponders. With this option enabled, such a near-by aircraft can
be detected, but not located.
Own Mode-C suppression selects a method for suppressing own Mode-C tran-
sponder. The Aggressive option may suppress other Mode-C targets
on same altitude. The Less aggressive option may cause warnings from
own Mode-C transponder in case of e.g. reflected signals.
N/D target alarm enables/disables traffic warnings for which direction is
not known (non-directional traffic). Figure 44 right shows an example
of such non-directional warning.
7
Flarm devices have origin in gliders. On competitions, certain pilots want to hide
identity, hence this option was introduced in Flarm.
7
72
5.4 Settings
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