Installation Procedures
2-34
560-0982-01 Rev L
GNS 480 (CNX80) Installation Manual
2.8.10
Serial Interfaces
2.8.10.1
RS-232 / RS-422
The GNS 480 provides five bi-directional RS-232 serial interfaces, two receive-only RS-232 serial
interfaces and one bi-directional RS-422 serial interface for making optional connections. The serial port
can be used for connecting to:
•
Resolvers, indicators, or electronic flight instruments that accept serial data
•
SL30 for COM/NAV frequency transfers and DME distance from the database
•
MX20/GMX 200 to display VOR data on a map and database interface
•
A second GNS 480
•
GDU 620
Serial interface specifications are included in Appendix B.
P1-4 RS-232
RxD1
P5-1 RS-232
RxD5
P1-5
RS-232 TxD1
P5-21
RS-232 TxD5
P1-23
Serial Ground 1
P5-41
Serial Ground 5
P1-21
RS-232 RxD2
P5-2
RS-232 RxD6
P1-22 RS-232
TxD2
P5-22 RS-232
TxD6
P1-3
Serial Ground 2
P5-42
Serial Ground 6
P1-7
RS-232 RxD3
P5-10
RS-232 RxD7
P1-6
RS-232 TxD3
P5-30
RS-232 RxD8
P1-25
Serial Ground 3
P5-44
Serial Ground 7/8
P1-11
RS-422 RxD4 +
P1-26
RS-422 RxD4 –
P7-5
RESERVED DB30 TxD
P1-8
RS-422 TxD4 +
P7-3
Ground
P1-10
RS-422 TxD4 –
NOTE
In order for a serial port to function correctly, the baud rate of the Rx and Tx channels on
a given RS-232 or RS-422 port must be the same. This must be considered when
assigning serial ports to interfacing equipment.
The GNS 480 can communicate with an SL30 radio using RS-232 RxD1 and TxD1. This interface allows
the SL30 to provide DME station information to the GNS 480, which will provide the range to the DME
station back to the SL30 for display on its front panel.
The GNS 480 can communicate with a PDA using the infrared sensor on the front bezel. If this feature is
used it must be set up on RxD3 and TxD3, not allowing these lines to be used for communication with
other devices.
The GNS 480 can receive air data and fuel data from certain systems on RS-232 RxD5, although it is
recommended that if a dedicated altitude encoder is used, it be connected to RS-232 RxD8.
If two GNS 480s are installed in an aircraft, the RS-232 RxD2 and TxD2 lines may be cross connected to
cross-fill flight plans and user-defined waypoints from one GNS 480 to the other (this feature is not
implemented in the initial version of the GNS 480). Altitude data and master/slave control is coordinated
between two GNS 480s.
The GNS 480 can communicate with an SL70 or SL70R transponder using the RS-232 RxD6 and TxD6
lines, allowing the GNS 480 to control the operation of the transponder. This interface will also allow
altitude to be provided from the SL70/70R to the GNS 480. RS-232 channel 6 is opto-isolated, allowing
the transmit lines of two GNS 480s to be connected together to either GNS 480 to control an SL70
transponder.
A dedicated altitude encoder may be used to provide altitude data to the GNS 480 using RS-232 RxD8.
Содержание GNS 480
Страница 1: ...GNS 480 CNX80 Color GPS NAV COM Installation Manual November 2008 560 0982 01 Rev L...
Страница 10: ...Table of Contents viii 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Страница 32: ...General Information 1 22 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Страница 44: ...Installation Procedures 2 12 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Figure 2 3 GNS 480 Dimensions...
Страница 80: ...Installation Procedures 2 48 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Страница 134: ...Periodic Maintenance 6 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Страница 158: ...Appendix D Interconnect Diagrams D 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Страница 191: ...GNS 480 CNX80 Installation Manual 560 0982 01 Rev L D 35 Figure D 17 GNS 480 to GDU 620 Interconnect Diagram...
Страница 192: ...D 36 560 0982 01 Rev Notes...
Страница 194: ...Appendix E Acceptable Aircraft by Evaluation E 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Страница 196: ...Appendix F Optional Accessories Not Supplied F 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Страница 198: ...Appendix G Removal and Replacement Considerations G 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
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