2-17-07 VP Oncore Engineering notes under product specification Characteristics of receiver architecture has a listing of
L1 - 1572.42 Mhz. Is anyone knowledgable as to the take off point of this frequency on the PCB? Thanks, Stork 1. Product Specifications VP ONCORE GPS Receiver Technical Characteristics Receiver Architecture 6 (or 8) channel L1 1575.42 MHz C/A code (1.023 MHz chip rate) Code plus carrier tracking (carrier aided tracking) Tracking Capability 6 (or 8) simultaneous satellite vehicles Dynamics Velocity: 1000 knots (515 m/s) >1000 knots at altitudes < 60,000 ft Acceleration: 4g Jerk: 5 m/s3 Vibration: 7.7G per MIL-STD 810E Acquisition Time (Time to First Fix (TTFF) 20 sec. typical TTFF (with current almanac, position, time, and ephemeris) 45 sec. typical TTFF (with current almanac, position, and time) 2.5 sec. typical reacquire Positioning Accuracy Less than 25 meters, SEP (without SA) Less than 100 meters, SEP (with SA) DGPS accuracy: 1-5 meters typical Timing Accuracy (1 Pulse Per Second, 1PPS) 130 ns observed (1σ) with SA on In Position-Hold mode, <50 ns observed (1σ) with SA on Antenna Active micro-strip patch antenna module Powered by receiver module (25 mA @ 5V) Passive antenna configuration (see optional features) Datums 49 std datums, 2 user defined, default WGS-84 Output Messages Latitude, longitude, height, velocity, heading, time, satellite tracking status (Motorola Binary protocol) NMEA-0183 v2.00 (selected formats) available Software selectable output rate (continuous or poll) Broad list of command/control messages TTL interface Power Requirements 5 +/- 0.25 Vdc; 50 mV p-p ripple max Keep Alive BATT Power External 2.5 V to 5.25 V; 15 μA typ, 60 μA max 3V onboard battery; 15 μA typ., 60 μA max. Power Consumption 1.1 W @ 5 Vdc Dimensions Receiver: 2.00 x 3.25 x 0.64 in. (51 x 83 x 16 mm) Active antenna: 4.01d x 0.89 in. high (102 x 22.6 mm) Weight Receiver: 1.8 oz (51 g) Active antenna module: 4.8 oz (136 g) Connectors Data/Power: 10 pin (2x5) unshrouded header on 0,1" centers RF: Right Angle OSX (subminiature snap-on) Antenna to Receiver Interconnection Single coaxial cable (6 dB max loss at L1; 1574.42 MHz) Operating Temperature Receiver module -30°C to + 85°C Humidity 95% non-condensing, +30°C to + 60°C Altitude 60,000 ft (18 km) > 60,000 ft (18 km) for velocities < 1000 knots Optional Features 1PPS Timing Output Raw measurement data Onboard rechargeable lithium battery Onboard LNA option for use with passive antenna DGPS Differential GPS standard software feature RTCM-104 format (remote input) Motorola Custom Format
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