Garmin GNS 480, Installation Manaul

Page: 137 / 200

Appendix B - Serial Interface Specifications
GNS 480 (CNX80) Installation Manual 560-0982-01 Rev L
APPENDIX B - SERIAL INTERFACE SPECIFICATIONS
This appendix includes the RS-232 serial port interface specifications.
The RS-232 serial interface configurations supported by the GNS 480 are described below. Instructions
for configuring the serial port are included in the checkout procedure in section 3.2.1.1. Serial output
connections should be limited to a maximum of three external units.
B.1 S
ERIAL
I
NPUT
S
PECIFICATIONS
Available settings for the serial inputs are listed in Figure 3-2. Not all settings are available on each serial
input port – refer to section 3.2.1.1 to determine which settings are available on a given port.
Table B-1. RS-232 Serial Input (RX) Selections
RX Comment Reference
N
ONE
No input connected. N/A
MAPMX Proprietary interface between GNS 480 and MX20 (v5.0 or
later) or GMX 200. This interface will support auto chart
selection, flight plans, zoom scale matching, altimeter
correction, and ILS and VOR navigation information. (MUST
BE USED WITH MAPMX SELECTED ON SAME OUTPUT
PORT) N/A
C
ROSSFILL
Proprietary interface to second GNS 480 for cross-talking data
(MUST BE USED WITH GNS 480 SELECTED ON SAME
OUTPUT PORT) N/A
A
LT
E
NC
Altitude encoder data. B.1.1
FADC Fuel/Air Data Computer data. B.1.2
SL30 Tuned NAV station data.
Refer to SL30 installation manual. 560-0404-xx
SL70 SL70/SL70R mode control and altitude data.
Refer to SL70 installation manual. 560-0402-xx
I
R
DA Not currently supported. N/A
GTX32 Proprietary interface between GNS 480 and GTX 32/327
transponder for mode control. N/A
GTX33 /
GTX33+TIS
Proprietary interface between GNS 480 and GTX 33/330
transponder for mode control (and optional TIS traffic). N/A
COG Proprietary interface between GNS 480 and Carbon Monoxide
Guardian. N/A