Garmin GTX 3X5 Series Installation Manual page 194

CS-ASNS SECTION
CS ACNS.D.ADSB.025 Provision of Data
CS ACNS.D.ADSB.030 ADS-B Transmit Unit
Approval
CS ACNS.D.ADSB.035 ICAO 24-bit Aircraft
address
CS ACNS.D.ADSB.040 Antenna Diversity
CS ACNS.D.ADSB.045 Antenna Installation
CS ACNS.D.ADSB.050 Transmit power
190-01499-02
Rev. 9
CS-ACNS DESCRIPTION
a) All data provided by the ADS-B Out system
comes from approved sources.
b) The data transmitted by the ADS-B Out system
originates from the same data source as used in
the transponder replies to Mode S
interrogations.
c) When a data quality indication is required, it is
provided to the ADS-B transmit unit together
with the associated data parameter and it
expresses the actual quality of the respective
data as valid at the time of applicability of the
measurement.
The ADS-B transmit unit is approved and it is
integrated in the Mode S transponder.
The ICAO 24 bit aircraft address is implemented as
specified in CS ACNS.D.ELS.055.
The ADS-B transmit unit employs antenna diversity
under the same conditions as specified in CS
ACNS.D.ELS.065.
The antenna is installed as specified in CS
ACNS.D.ELS.060.
The ADS-B transmit unit has a peak transmit power
as specified in CS ACNS.D.ELS.010(c);(d).
CS-ACNS Compliance Matrix
COMPLIANCE SUMMARY
Approved GPS sources are Garmin GPS sources (see
note 1).
The ADS-B Out system is integrated in the GTX
transponder units. ADS-B related BDS registers are
populated with the same DAP parameters used to
populate transponder registers.
Data quality parameters are only used for data
parameters from the same source interface (e.g., the
same A429 channel). An ADS-B Fail indication is
provided when the quality of the GPS position source
is below the allowable tolerance. In addition, other
data parameters will only be processed when their
associated validity flags (if applicable) indicate the
parameter is valid.
The GTX 3X5 units have TSOA and meet TSO-C112d
and TSO-C166b with granted deviations.
The ICAO address is programmed as part of the
transponder configuration by the installer and
verified as part of the transponder configuration and
return to service procedures.
The GTX 3X5 transponders are not diversity units and
do not meet this requirement.
Transponder antenna must be compliant to TSO-
C66( ), TSO-C74( ), or TSO-C112( ). Antenna
installations are not covered in the design/installation
data however, minimum installation requirements
are provided under the antenna installation guidance
in sections 3.7 and 3.15 of the installation manual.
The GTX 3X5 units meets the minimum and
maximum transmit power level, 125 W (21 dBW) and
500 W (27 dBW), respectively, when installed
according to the installation manual.
GTX 3X5 Transponder TSO Installation Manual
Page E-13