Garmin APOLLO GX SERIES Service Manual - page 19
Garmin AT
Rev --
© 2004 Garmin AT
GX Service Manual
2-7
• Automatic
waypoint
sequencing
• Vectors to final input (GX50/60 only)
• DME
arc
assist
• Built-in simulator for trip planning and training
• User definable navigation pages with auto sequencing
• 30 reversible flight plans of up to 20 legs with automatic sequencing
• 500 user waypoints created by lat/lon or by radial/distance from a reference waypoint
• Real time clock (time and date) in UTC
• Countdown
timer
• Flight
timer
• Automatic or manual magnetic variation
• Parallel track offset
• Alerts for -
− Loss of navigation data
− Arrival at waypoint
− Special
use
airspace
• Full range (10 VDC to 40 VDC) input supply voltage
GPS Receiver Performance Specifications
• 8-channel parallel GPS receiver
− Frequency: 1575.42 MHz L1, C/A code
• Sensitivity (acquisition): -135 dBm
• Sensitivity (drop lock): -142 dBm
• Dynamic range: >20 dB
• Lat/Lon
position
accuracy
− 15 meters RMS accuracy
− 25 meters, SEP, without SA
− 100 meters 2 DRMS with SA
• Velocity: 999 knots maximum
− Acceleration:
4G
maximum
• TTFF (time to first fix)
• 25 sec. (typical) with current almanac, position, time, and ephemeris
• 55 seconds typical with current almanac, position, & time
• Reacquisition: 2.5 seconds typical
• Position update interval: 1 second typical
• Datum:
WGS-84