System Description

System Description and Installation Manual for MXS ICD10004-01

Table 0-2 Main Connector Part Description

Part Description Manufacturer Part Number

Female Power and Interface Connector Micro-D 51 pin, 2-row

Omnetics A99601-512

To connect to the Main Connector:

 Construct a cable to connect the host computer to the Main Connector according to pin-out definitions and

instructions described in Section 05.0. The cable should be built according to standard A-A 59569A.

 The MXS can be powered with 14-28 VDC +/- 4 VDC (at the MXS). MXS power consumption is documented in

Table 0-3Table 3-3. If you are supplying voltage to the MXS at the lower end of that range, avoid voltage loss by

using short power supply wires and/or larger diameter power supply wires.

 Zener diodes are used on the DC Power pins to protect the MXS against overvoltage and reverse polarity.

 Surge currents can be up to 5A when enabling operating mode or transmitting. The in-rush current at power-on

(in operating mode) will also not exceed 5A.

Table 0-3 Maximum Current Consumption

Variant SupplyVoltage MaxAverageCurrent Note

MXS 14V 2.1A Measured

28V 1.0A Measured

4. Connect to GPS Interface

GPS data should be provided to the MXS from the aircraft system integrator in one of two ways:

a) GPS serial data stream on the 51-pin Micro-D connector. The data format is either NMEA or a proprietary

format from a NexNav Mini GPS (a TSO-C145c compliant solution).

b) Host Computer GPS data is incorporated into the command and control protocol packets on the 51-pin serial

interface. (See Section 105.1.)

Note: Sagetech recommends using the external Accord Technology NexNav Mini receiver. It is the smallest TSO-C145c

compliant receiver Sagetech has identified.

5. Installing two Antennas

Figure 0-3 Connectors to Top and Bottom Antenna

In the diversity configuration, top and bottom-located antennas should be connected to MXS using the left and right-side

female SMA connectors (see Figure 0-3Figure 3-3). Assuming the orientation shown in Figure 0-3Figure 3-3, the top