The FURUNO GP-170 is a highly stable and reliable IMO-compliant GNSS (GPS/GLONASS/SBAS/QZSS) navigator featuring a 5.7-inch color LCD display. It provides high-precision position fixing (10 Hz update rate), supports DGPS augmentation for enhanced accuracy, and offers various display modes like Plotter, Course, Highway, Data, and Skyplot (Integrity). Crucially, it’s BAM (Bridge Alert Management) ready and integrates seamlessly with other bridge systems via NMEA 0183 and IEC 61162-450 (Ethernet), making it an ideal position sensor for modern vessels.
Technical Specification
1. General & Performance:
- Receiving Channels: 12 channels (for GPS, SBAS, QZSS, GLONASS; capable of Multi-GNSS)
- Operating Frequency: 1575.42 ± 1.023 MHz (GPS L1), 1602 MHz (GLONASS L1)
- Position Accuracy:
- GPS: Not exceeding 10 m (2 drms, HDOP <4)
- SBAS (e.g., WAAS, EGNOS, MSAS): Not exceeding 3 m (2 drms, HDOP <4)
- DGNSS (with external DGPS beacon receiver): Enhanced accuracy.
- Position Update Rate: 10 Hz (position updated every 0.1 second), ensuring smooth tracking.
- Tracking Velocity: Up to 1,000 knots
- Time to First Fix (Cold Start): Approximately 90 seconds (typical)
2. Display Unit (GP-170):
- Screen Type: 5.7-inch Color LCD
- Resolution: 640 x 480 pixels (VGA)
- Brightness: 700 cd/m² (Candela per square meter)
- Display Modes: Plotter, Course, Highway, Data, Integrity (Skyplot/Satellite status)
- Memory Capacity:
- Ship’s Track: 1,000 points (with comments up to 20 characters)
- Waypoints: 2,000 points
- Routes: 100 routes (each containing up to 1,000 waypoints)
- User Interface: Simplified menu operation via cursor pad and numeric keypad.
- Alerts: Differential positioning interruption, HDOP overshoot, own ship positioning fail, own ship position lost, beacon signal lost/malfunction, antenna short-circuit.
- Notices: Arrival and anchor watch, XTE (Cross Track Error), Speed, Trip.
- Integrity Indication: Safe, Unsafe, Caution.
3. Power Supply:
- Voltage: 12 to 24 VDC
- Power Consumption: Typically around 10-15 W (depending on operating mode and brightness).
4. Interfaces:
- NMEA 0183 (IEC 61162-1): Multiple serial ports (typically 2 inputs, 1 output, or configurable I/O) for connection to:
- Inputs: GGA, GLL, VTG, ZDA, RMC, RMA, DPT, DBS, DBT, HDT, HDM, VHW, VBW, ROT, etc.
- Outputs: AAM, APA, APB, BOD, BWC, BWR, DPT, DBT, GGA, GLL, GSA, GSV, RMB, RMC, VTG, WPL, XTE, XTR, ZDA, etc. (Configurable for various talker IDs: GP, GL, GN)
- IEC 61162-450 (Light Weight Ethernet): 1 port (100Base-TX, RJ45 connector) for high-speed network integration, especially for Bridge Alert Management (BAM) and data sharing.
- USB Port: 1 port (front panel) for exporting/importing routing data, menu settings, and user settings using USB flash drives.
5. Environmental Specifications:
- Operating Temperature: -15°C to +55°C
- Storage Temperature: -25°C to +70°C
- Relative Humidity: 95% or less at 40°C
- Degree of Protection (IP Rating):
- IP25 (Display Unit, for panel or bracket mount) – Protection against dust and low-pressure water jets from any direction.
- IP56 (Antenna Unit) – Protection against dust and strong jets of water.
- Vibration: Complies with IEC 60945 (Maritime navigation and radiocommunication equipment and systems).
- Magnetic Compass Safe Distance: Typically specified in the manual, often 0.6 m or more, depending on the type of compass.
6. Compliance & Certification:
- IMO Performance Standards: Full compliance with IMO MSC.112(73) (GPS), MSC.114(73) (DGPS), and MSC.302(87) (Bridge Alert Management – BAM ready).
- IEC Testing Standards: IEC 61108-1 (GPS receiver), IEC 61108-2 (DGPS radio beacon receiver), IEC 61162 series, IEC 60945.
- Type Approval: MED (Wheelmark) approved.
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