MXS System Description and Installation Manual
UM06945
© Sagetech Avionics 2022 Proprietary Confidential
Page 16 of 56
Host Autopilot/
Control Head
MXS
Pressure
Port
T
B
50 Ohm
Terminator
Main Connector
Power Supply
10 - 32 VDC
RS-232/422 Port
Host Interface
Figure 3-2 System Block Diagram of MXS Minimum Mode C/Mode S Installation
3.2
System Functionality
The MXS transponder performs the following basic functions:
3.2.1
Transponder
•
Verified to meet the applicable requirements of DO-181E for a Mode S Class 1, Level 2
transponder.
•
Interacts with air traffic control (ATC) by transmitting and receiving standard secondary
surveillance radar pulses per ICAO requirements. The transponder replies to ATCRBS
interrogations with a squawk code and pressure altitude data.
•
Provides Mode S replies (includes data such as ICAO address and call sign) and is capable of being
selectively interrogated.
3.2.2
ADS-B In
•
Verified to meet the applicable requirements of DO-260B for a Class A2 ADS-B Receiver.
•
The MXS receives Automatic Dependent Surveillance-Broadcast In (ADS-B), Extended Squitter (ES)
messages that have been transmitted automatically from surrounding planes and the Air Traffic
Control (ATC) system.
•
ES messages report Position, Velocity, Identification and Category, Target State and Status, and
Aircraft Operational Status. From this data, MXS generates ADS-B, TIS-B and ADS-R reports for
delivery to the flight computer which communicates the data to the user.
