Garmin GNS 480 User Manual

Appendix D - Interconnect Diagrams
GNS 480 (CNX80) Installation Manual 560-0982-01 Rev L D-3
2345 Turner Road S.E., Salem, OR 97302
Phone: 503.581-8101 http://www.garmin.com
Garmin AT, Inc
1
20
2
16
1
2
GNS 480
GPS Ant
COM Ant
NAV Ant
1
9
P4
P7
P1
P7
P3
P2
P6
5 AMP
COMM
POWER + (PRIMARY)
POWER GND (PRIMARY)
POWER + (PRIMARY)
POWER +
POWER GROUND
POWER +
POWER GROUND
AVIONICS BUS
(14/28 VDC)
AVIONICS BUS
(14/28 VDC)
5 AMP
NAV / GPS
ACFT GROUND
ACFT GROUND
POWER AND ANTENNAS
GNS 480 INSTALLATION DRAWING
NOTES:
1. ALL WIRES 20 AWG FOR THE POWER AND GROUND CONNECTIONS.
2. A MANUALLY RESETTABLE CIRCUIT BREAKER MUST BE USED FOR
THE GNS 480 PRIMARY POWER INPUT.
3. THE NAV ANTENNA MUST BE A COMBINED VOR/LOCALIZER/
GLIDESLOPE ANTENNA. USE OF A SPLITTER/COMBINER IF
SEPARATE VOR AND GLIDESLOPE ANTENNAS ARE USED ON THE
AIRCRAFT IS NOT RECOMMENDED.
4. CAUTION: TWO SETS OF PRIMARY POWER AND GROUND PINS ARE
PROVIDED ON P1. BOTH SETS MUST BE CONNECTED TO THE
AIRCRAFT POWER SOURCE TO AVOID DAMAGE TO THE UNIT.
5. THE GPS ANTENNA COAXIAL CABLE MUST BE DOUBLE OR TRIPLE
SHIELDED AND THE GPS ANTENNA COAXIAL CABLE LOSS
(INCLUDING CONNECTORS) MUST BE BETWEEN 3dB AND 7dB.
6. GARMIN AT SPLITTER P/N 115-0007 (OR EQUIVALENT) MUST BE
USED.
Initial Release- 04/09/03
DescriptionRev Date
POWER + OUT (NAV)
POWER GND OUT (NAV)
35
37
2
3
POWER GND (PRIMARY)
4
GPS
COM
NAV
GNS 480 #1
DUAL GNS 480 ANTENNA CONNECTIONS
GPS #1 Ant
COM #1 Ant
NAV Ant
P3
P2
P6
3
GPS
COM
NAV
GNS 480 #2
P3
P2
P6
GPS
COM
NAV
Splitter
1
2
S
NAV #2 Ant
GPS #2 Ant
20AWG
20AWG
20AWG
20AWG
20AWG
20AWG
20AWG
20AWG
5
5
5
6
Updated company name to
Garmin AT in note 6.
A 08/25/03
Changed unit name to GNS 480
and fixed Notes format error.
B 05/20/03
Changed Note 5 to add
minimum 3dB loss requirement.
C 09/22/06
Figure D-1. Main Power and Antenna Interconnect Diagram

Garmin GNS 480 Specifications

General

Brand	Garmin
Model	GNS 480
Category	GPS
Language	English