Specifications; Electrical; Physical; Environmental - Garmin GNS 480 Installation Manaul

General Information

1.3 Specifications

This section includes detailed electrical, physical, environmental and performance specifications for the
GNS 480.
1.3.1

Electrical

Input voltage ................................................. 10 VDC to 36 VDC
Input current (Main input – P1) .................... 1.4 A typical, 2.2 A max (heater off) at 14 VDC
Input current (VHF NAV input – P7) ........... 450 mA typical, 700 mA max at 14 VDC
Input current (COM input – P4).................... 270 mA typical, 350 mA max at 14 VDC, receive
Internal fuses ................................................. Main input: 3 amp fast-blow, socketed on board (2)
Memory backup ............................................ Internal flash memory
1.3.2

Physical

Height............................................................ 3.3 inches (84 mm)
Width............................................................. 6.25 inches (159 mm)
Depth............................................................. 11.7 inches (297 mm) (behind panel, including
Weight........................................................... 5.8 lbs. (2.6 kg) unit only
1.3.3

Environmental

The GNS 480 unit is designed and tested to meet appropriate categories as shown in the Environmental
Qualification Form included in Appendix A.
Operating temperature................................... -20°C to +55°C
Storage temperature ...................................... -55°C to +85°C
Temperature variation ................................... 2°C per minute
Humidity ....................................................... 95% at 50°C
Maximum continuous altitude....................... 35,000 feet
Decompression.............................................. 55,000 feet (operation for up to 30 minutes at 55,000
Cooling.......................................................... Not required
1-6
2.4 A typical, 3.2 A max (heater on) at 14 VDC
700 mA typical, 1.1 A max (heater off) at 28 VDC
1.2 A typical, 1.6 A max (heater on) at 28 VDC
Note: backlight heater element turns on when
internal temperature is below approx. 42°C
200 mA typical, 350 mA max at 28 VDC
130 mA typical, 175 mA max at 28 VDC, receive 2.1
A typical, 3.2 A max at 14 VDC, transmit
1.0 A typical, 1.6 A max at 28 VDC, transmit
Note: receive max at full receive audio, transmit max
at 90% modulation at 1000 Hz.
NAV input: 3 amp fast-blow, socketed on board
COM input : 7 amp fast-blow, soldered in board
mounting frame and connectors)
0.7 lbs. (0.3 kg) mounting tube
feet supported)
560-0982-01 Rev L GNS 480 (CNX80) Installation Manual