air
avionics
F. Configuration Parameters
F.2 Installation
F.2.1 Use Own Mode-S Altitude Signal
Description
Activating this option disables the integrated pressure sensor and uses the pressure altitude
encoded into the own aircraft’s transponder replies. Only recommended in pressurized
aircraft and if the static port of the AT-1 cannot be used.
•
Item Code:
MODESALT
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Valid Values:
ON, OFF
•
Default Value:
OFF
F.2.2 GPS Track Fallback
Description
Selects the fallback value for the own GPS-track-derived heading if no GPS-based ground
track is available. This is the case if the ground speed is too low for a stable track estimation.
However, the fallback value is used only if valid GPS data is available.
•
Item Code:
GPSTRKFALLBACK
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Valid Values:
NONE, TRUENORTH
•
Default Value:
NONE
F.2.3 1090MHz Receiver Attenuation
Description
Tunes the field strength based distance estimation of non-bearing transponder signals.
This value is set in [dB], a positive value reduces target distance vs receiver field strength, a
negative value increases the distance.
•
Item Code:
TRXCABLELOSS
•
Valid Values:
integer value, -12 - 12
•
Default Value:
0
F.2.4 GPS Antenna Supply Voltage
Description
Sets the bias voltage used to supply active GPS antennas with power. Be very careful,
antennas may be permanently damaged if the voltage is not set correctly.
•
Item Code:
GPSANTSUPPLY
•
Valid Values:
OFF, 3, 5
•
Default Value:
3
AT-1
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Installation Manual
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rev. 4.0
·
2020/01/09
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