Horis User Manual
2.4
Connections
•
Antenna must not be covered or obstructed by metals (met-
als sheets, rods) or any other conductive material (like carbon
fibres).
•
The triangle/GPS text must point upwards, to the sky. For
the installation use self-adhesive tape and fix the antenna on
a rigid and clean surface. Supplied antenna is not intended to
be installed on the aircraft exterior. If you need to install the
antenna on the external surface, search a suitable antenna in
your local avionics shop. Any 3.3 V active antenna with SMA
male connector can be used.
The antenna is used as an additional stabilisation of artificial horizon
and as a source for the tracking azimuth.
2.4.6
Outside Air Temperature -
OAT
Outside air temperature (OAT) probe is shipped with Horis. This
is a digital temperature sensor
glued inside a threaded aluminium
housing. Default OAT cable length is 1.5 meters but other lengths
are available on request.
OAT connector is standard RJ12 type, as shown on Figure 10. De-
scription of individual pins is given in Table 5.
Pin
Description
1
+3.3V
2
Data
3
GND
4
Not connected
Table 5:
Description of the OAT pins.
2
Digital thermometer – DS18B20.
21
©
Kanardia
2021
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