Sagetech MXS, Руководство по установке

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MXS System Description and Installation Manual UM06945
© Sagetech Avionics 2022 Proprietary Confidential Page 20 of 56
Table 4-2 List of Common Mounting Parts and Vendors
Description
Vendor Vendor PN Quantity
Machine Screw, Round Head, PH1, .112(#4)-40
Thread Size, 1", Zn Plated Steel McMaster-
Carr
90279A115 2
Machine Screw, Round Head, PH1, .112(#4)-40
Thread Size, 1-1/4", Zn Plated Steel McMaster-
Carr
90279A117 2
Flat Washers, Black-Oxide Steel Oversized
Washer for Number 4 Screw Size, 0.125" ID,
0.25" OD
McMaster-
Carr
98029A024 8
Locknut, low-Strength Steel Nylon-Insert, Zinc-
Plated, 4-40 Thread Size McMaster-
Carr
90631A005 4
4.2 Connecting the GPS Interface
GPS data must be provided to the MXS from the aircraft system in one of three ways:
1.
NMEA data sent via RS232/RS422 to COM0 or COM1. MXS accepts GGA, GLL, RMC and VTG NMEA
sentences. If NMEA Protocol is used, then SIL and SDA are set to 0 automatically.
2. The proprietary Accord Binary data sent via RS232/422 to COM0 or COM1(a TSO-C145c compliant
solution). MXS accepts: The Navigation Packet, the Auxiliary Navigation Packet, and the Status
Packet. If Accord protocol is used the SIL is set to 3 and the SDA is set to 2 automatically.
3. Sagetech defined GPS message protocol as defined in ICD02373 and can be sent to COM0, COM1, or
ethernet. If the Sagetech navigation message is used, then the SIL and SDA is set by the install
message.
Per AC 20-165A an appropriate position source must be used. The total latency measured from the time
when the position is measured to when the position is transmitted must be less than or equal to 2.0
seconds. The MXS will reflect the updated position information within 100milliseconds from receiving
the position message.
The NexNav Mini LRU PN:21001 meets the requirements per AC 20-165A as it holds a TSO-C145. The
MXS is compatible with the Accord Binary protocol that the 21001 outputs.
For other TSO’d GPS receivers that use an alternative protocol the data must be translated to either the
Accord Binary format or Sagetech Defined format.
The MXS will not function correctly if multiple sources of position information are sent into the device.
User must send one source at a time.
Note: See 6.1
Main Connector
for more information about the serial data protocol and the pins used for
serial communications on the Main Connector.