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DGPS receiver (961XD)
Interfacing
961 Operations and Reference Manual Rev. D
•
SC-104 port processes all USCG SC-104 message types,
including 1 and 9
Signal processing
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Type: 2-channel, fully automatic
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Frequency range: 283.5–325.0 kHz (includes European
frequencies)
•
Minimum signal: <5µV/m 100 bps
•
Dynamic range: >100 dB
•
Adjacent channel rejection: > 50 dB at 1 kHz
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Acquisition time: 5 seconds
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Noise Blanker: Predictive variable length
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Signal Detection: Acquisition via FLL, tracking via PLL
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Tuning Resolution: < 2Hz
Data processing
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Demodulation: MSK (Minimum Shift Keying)
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MSK Bit Rates: 25, 50, 100, 200 (automatically selected)
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Data Decoding: 2 parallel matched digital filters
Power
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Power consumption: 2 watts
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IR link on control heads
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Two control-head ports
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Three bi-directional NMEA I/O ports
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One bi-directional aux port
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Waypoint upload/download capability
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Easy in-field software updates
Appendix A – Specifications
Page A-5
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