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

General Information
1.3 S
PECIFICATIONS
This section includes detailed electrical, physical, environmental and performance specifications for the
GNS 480.
1.3.1 E
LECTRICAL
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 (Comm 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 P
HYSICAL
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 E
NVIRONMENTAL
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
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
Comm input : 7 amp fast-blow, soldered in board
mounting frame and connectors)
0.7 lbs. (0.3 kg) mounting tube
560-0982-01 Rev A GNS 480 (CNX80) Installation Manual