Installation Manual

Table Of Contents
Lynx NGT-9000
Installation Manual
0040-17001-01 (Revision W) Appendix D Page D-6
Deviation Notes:
remote displays. However, for NGT-9000 installations, where TAS is enabled, the range/bearing based TAS
targets are displayed.
Deviation 10: TSO-C112d, TSO-C166b. For diversity configurations, only where the top mounted TAS antenna is
operating as an augmentation to a fully qualified bottom blade antenna. In this given configuration, the NGT-
9000D+ uses the top directional antenna with reduced 1090MHz gain of minus 5dB as compared to a matched
quarter wave stub.
Deviation 11: TSO-C118a. (In-band Acceptance) Given a valid transponder reply signal in the absence of
interference or overloads, the minimum trigger level (MTL) is defined as the input power level that results in a 90%
ratio of decoded to receive replies. The MTL over the frequency range of 1,087 to 1,093 MHz shall be no greater
than -70 dBm.
Deviation 12: TSO-C118a. (Transmitter RF Power Output) When transmitting at full (un-attenuated) output
power, the peak RF output power delivered to a quarter wave stub antenna will have a minimum RF
power of 50 dBm.
Deviation 13: TSO-C118a. (GPS Altitude Derived Height Above Geoid) Above Ground Level (AGL) height will be
calculated by subtracting local terrain elevation provided by the terrain database from the GPS altitude provided by
the internal GPS receiver.
Deviation 14: TSO-C118a. (Aural Alert for Rotorcraft installations) Aural annunciations will not be
suppressed at any altitude while ownship is “in air”.