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General Information
TQG191-IM
Rev 0: 28 Feb 2019
KTX2
Installation Manual
Figure 1-1: System Interface Overview
1.5.2 ADS-B OUT Functional Overview
The ADS-B Out function supports the transmission of Automatic Dependent Surveillance –
Broadcast (ADS-B) Out on a 1090 MHz link. The ADS-B Out data contains information about
own aircraft such as aircraft position, velocity, direction, etc. The ADS-B function requires own
aircraft data from an external GPS receiver.
Control functions such as squawk codes, Ident, and operational mode (e.g. Mode "A", Mode
"C", etc.) are selected on the unit’s control panel.
1.5.3 GPS Functional Overview
The external GPS provides position, velocity, time and integrity (NIC, NAC, etc.) information to
the Transponder. This GPS source must be rule compliant with the position source
requirements of AC20-165A. The external GPS source must support WAAS. Note that the
NexNav mini is currently the only compatible GPS source.
1.5.4 Barometric Altitude Inputs
In addition to GPS altitude, the KTX2 has a Temperature compensated high precision piezo-
resistive pressure sensor that provides barometric altitude when connected to a calibrated
aircraft static source.
1.5.5 Additional Interfaces
The WOW input discrete is optional. The input signals the “On Ground” status to the
Transponder via a gear switch or squat switch.
The RF Suppression connection is optional. When other avionics utilizing the same frequency
band as the Transponder are installed (e.g. DME), this connection will suppress transmission
from a competing transmitter for the duration of the ADS-B transmission.
