II Morrow Inc. 55 GPS Receiver User Manual


 
Apollo GX Features
Navigation Features
30 Reversible Flight Plans of up to 20 Legs with Automatic
Sequencing
500 User-Defined Waypoints
Nav Displays
Lat/Lon
Bearing and Distance
Ground Speed and Track Angle
Desired Track and Distance
Internal CDI Display
160 pixel wide by 80 pixel high electroluminescent display with
moving map
Automatic Display Intensity Control
User-Selectable Nav Displays
User-Definable Distance and Speed Settings:
nm and km (distance)
knots
Clock and Countdown Timer
Auto/Manual Magnetic Variation Settings
Direct-To Nav Function
Parallel Track
Nearest Waypoint Search
Internal Database of Airports, VORs, NDBs, Intersections,
Frequencies, Airport Info, and controlled and special use
airspace
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. typ. 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
1-9
Apollo GX Features