System Overview; Nxg-900 - ACSS NXG-900 AML STC System Maintenance Manual

NXG-900 AML STC SYSTEM MAINTENANCE MANUAL
2

SYSTEM OVERVIEW

The NXG-900 contains an integrated WAAS capable GPS receiver. The GPS receiver provides ownship
aircraft position, velocity, and track information to the XS-950 transponder for the ADS-B Out position
messages. This ADS-B information is automatically transmitted to other aircraft and ground stations
providing immediate and accurate surveillance of ownship.
2.1

NXG-900

The NXG-900 is mounted remotely in the aircraft and electrically interfaces to the aircraft systems via the
J2/P2 and GPS-RF Connections. The J2/P2 connection is a 62-pin high density sub D connection that
receives +28 VDC power and Ground, discrete "Air/Ground" status from the aircraft, and ARINC-429 GPS
Position data to the XS-950 Transponder.
The GPS RF connector is used to connect the NXG-900 receiver to the GPS antenna through a low loss
Coaxial cable.
A Mini-B USB port is also available to establish communication between the unit and a MPC (Maintenance
PC) for maintenance and troubleshooting activities.
Pub. No. 8009949-610
Revision A
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Figure 1 – NXG-900 Connector Reference
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06 DEC 2018