Garmin GDL 88 Installation Manual

Garmin GDL 88 Installation Manual Manual pdf 11 page image

GDL 88 TSO Installation Manual Page 1-3190-01122-00 Rev. A1.3.3 GPS/SBAS SpecificationsTable 1-4. GPS/SBAS Specifications – GDL 88 and GDL 88D with GPS/SBASCharacteristics SpecificationsNumber Of Channels 15 (12 GPS and 3 SBAS)Frequency 1575.42 MHz L1, C/A codeSensitivity(Acquisition, No Interference)-134.5 dBm GPS-135.5 dBm WAASSensitivity (Drop Lock) -144 dBmDynamic Range > 20 dBLat/Lon Position Accuracy <1.25 meter RMS horizontal, <2 meter vertical, with WAASVelocity 1000 knots maximum (above 60,000 ft)TTFF (Time To First Fix) 1:45 min. typical with current almanac, position, and timeReacquisition 10 seconds typicalPosition Update Interval 0.2 sec (5 Hz)1 PPS (Pulse Per Second) 275 Nsec of UTC secondDatum WGS-84SATCOM Compatibility SATCOM compatibility is dependent upon antenna selection.Antenna Power Supply 35 mA typical, 40 mA max at 4.7 VDC1.3.4 978 MHz UAT Transceiver SpecificationsTable 1-5. UAT Transceiver SpecificationsCharacteristics SpecificationsFrequency 978.00 MHzTransmit Power 50 W (+47 dBm)Frequency Tolerance + 20 PPMModulation Continuous Phase FSK, h = 0.6, Raised Cosine shaping, a = 0.5Data Rate 1.04 Mbps99% Power Bandwidth 1.3 MHz60 dB Bandwidth 3.3 MHz (estimated)Receiver Sensitivity -96 dBm for 90% MSR