General
Information
GNS 480 (CNX80) Installation Manual560-0982-01 Rev A
1-7
Decompression ..............................................55,000 feet (operation for up to 30 minutes at
55,000 feet supported)
Cooling ..........................................................Not required
1.3.4 D
ISPLAY
TSO/JTSO Compliance .................................TSO-C113 (SAE/AS8034)/JTSO-C113
Active Display Size .......................................3.8” Diagonal (3.1” (W) x 2.1”(H))
Display Format ..............................................320 pixels (W) x 240 pixels (H)
Viewing Angle (with 5:1 contrast ratio min.)
Left/Right..........................................60
°
from perpendicular
Up .....................................................60
°
from perpendicular
Down ................................................35
°
from perpendicular
Brightness
Maximum..........................................130
fL
Minimum ..........................................0.2 fL (at zero ambient light)
* Minimum brightness can be adjusted by the user to a value > 0.2 fL
1.3.5 GPS/WAAS
R
ECEIVER
P
ERFORMANCE
TSO/JTSO Compliance .................................TSO-C146a (RTCA/DO-229C)/JTSO-C146
Number of channels.......................................15 (12 GPS and 3 GPS/WAAS/SBAS)
Frequency ......................................................1575.42 MHz L1, C/A code
Sensitivity (acquisition).................................-116 dBm to -134.5 dBm GPS
-116 dBm to -135.5 dBm WAAS
Sensitivity (drop lock) ...................................-144 dBm
Dynamic range...............................................> 20 dB
Lat/Long position accuracy ...........................<1 meter RMS typical with WAAS
(horizontal/vertical)
Velocity .........................................................1000 knots maximum (above 60,000 ft)
TTFF (time to first fix) ..................................1:45 min. typical with current almanac, position, and
time
Reacquisition .................................................10 seconds typical
Position update interval .................................0.2 sec (5 Hz)
1 pps (pulse per second) ................................
±
275 nsec of UTC second
Datum ............................................................WGS-84
SATCOM compatibility ................................Compatible on aircraft equipped with SATCOM
Antenna power supply ...................................35 mA typical, 40 mA max at 4.7 VDC
Summary of Contents for GNS 480
Page 1: ...GNS 480 CNX80 Color GPS Nav Com Installation Manual September 2004 560 0982 01 Rev A...
Page 10: ...Table of Contents viii 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...
Page 30: ...General Information 1 20 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...
Page 126: ...Periodic Maintenance 6 2 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...
Page 150: ...Appendix D Interconnect Diagrams D 2 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...
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