Display; Gps/Waas Receiver - Garmin GNS 480 Installation Manaul

1.3.4

Display

TSO Compliance ...........................................TSO-C113 (SAE/AS8034)
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 Receiver Performance
TSO Compliance ...........................................TSO-C146a (RTCA/DO-229C)
Number of channels.......................................15 (12 GPS and 3 GPS/WAAS/SBAS)
Frequency ......................................................1575.42 MHz L1, C/A code
Sensitivity (acquisition, no interference) .......-134.5 dBm GPS
Sensitivity (drop lock) ...................................-144 dBm
Dynamic range...............................................> 20 dB
Lat/Long position accuracy (WAAS Corrected) <1.25 meter RMS horizontal, 2 meter RMS
Velocity .........................................................1000 knots maximum (above 60,000 ft)
TTFF (time to first fix) ..................................1:45 min. typical with current almanac, position, and
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 ................................Compatibility on aircraft equipped with SATCOM is
Antenna Power Supply @ GPS Port..............Vout = 4.6V + 0.3 VDC, min 4.3V @ 60 mA
GNS 480 (CNX80) Installation Manual
-135.5 dBm WAAS
vertical.
time
dependent on antenna selection.
560-0982-01 Rev L
General Information
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