MXS System Description and Installation Manual UM06945
© Sagetech Avionics 2022 Proprietary Confidential Page 37 of 56
for full power transmissions and a 0.5W rated 50-ohm terminator must be connected to
the Top port.
• Heading
o The heading input type can be configured to True or Magnetic Heading
• True Airspeed (TAS)
o The airspeed input type can be configured True or Indicated
• Pressure Sensor Heater Switch
o The Pressure Sensor Heater switch can be enabled or disabled. To guarantee the specified
accuracy of the Pressure Altitude Encoder this must be enabled.
• Altitude Encoder offset
o This field should only be set by an authorized person following 14 CFR 91.41. This
configuration filed is used to ensure the altitude encoder properly corresponds to the
primary flight altimeter, as described in AC 43-6D.
• Weight on Wheels Connected
o With this bit selected the MXS will use the state of the GND/Open Discrete input (Pin 16)
to determine airborne or ground status. If Pin 16 is grounded the aircraft is in the ground
state and if the signal is open it is in the airborne state. If the Air Speed of Ground Speed
exceed 60 knots, then the MXS will automatically switch to an airborne state.
o If this bit is a 0 then the MXS will automatically determine air/ground status based on Air
Speed and Ground Speed. An Air Speed greater than 60 knots or a ground speed greater
than 30 knots will place the transponder in the airborne state.