The ComNav G2 and G2B GNSS Satellite Compass provides true heading measurement with an accuracy of 0.25° RMS. The system uses differential GPS to measure heading and therefore is not subject to magnetic variation or deviation. Heading data is transmitted to an indicator or autopilot via a standard NMEA0183 or NMEA2000 data output. The system is IMO compliant and Wheelmark and USCG approved, and may be used as a primary heading source.
| SPECIFICATIONS: | |
| Receiver Type: | L1, C/A code, with carrier phase smoothing |
| Channels: | Two x 32 parallel tracking GPS, GLONASS, SBAS Update Rate: Standard 10Hz, Selectable up to 20 Hz (position and heading) |
| Horizontal Accuracy: | < 0.3m 95% confidence (DGPS)* < 2.5m 95% confidence (autonomous, no SA)** |
| Heading Accuracy: | < 0.25° rms |
| Pitch / Roll Accuracy: | < 1° rms |
| Heave Accuracy: | < 30 cm rms |
| Rate of Turn: | 90º / sec max |
| Start-up Time: | < 60 sec typical |
| Heading Fix: | < 10 sec |
| Satellite Reacquisition: | < 1 sec |
| BEACON RECEIVER SPECIFICATIONS (G2B) | |
| Channels: | 2-channel, parallel tracking |
| Frequency Range: | 283.5 to 325 kHz |
| Operating Modes: | Automatic (signal strength or range) and manual |
| Compliance: | IEC 61108-4 Beacon Standard |
| COMMUNICATIONS | |
| Serial Ports: | 1 full duplex R2-232 and 1 full duplex RS-422 |
| Baud Rates: | Selectable4800 – 115200 |
| Correction I/O Protocol: | RTCM v2.3 (DGPS), RTCM SC-104 |
| Data I/O Protocol: | NMEA 0183, NMEA 2000®, Proprietary ASII |
| Heading Warning I/O: | Open relay system indicates invalid heading |
| NMEA Heading Messages: | $GPHDT, $GPROT, $PSAT, $GPHDM, $GPHDG |
| Timing Output: | 1PPS CMOS, active low, 10KΩ,10pF load |
| ENVIRONMENTAL | |
| Operating Temperature: | -32ºC to +74ºC (-25ºF to + 165ºF) |
| Storage Temperature: | -40ºC to +85ºC (-40ºF to + 185ºF) |
| Humidity: | 0 – 99% non-condensing |
| POWER | |
| Input Voltage: | 10 to 36 VDC |
| Power Consumption: | ~ 3 W nominal |
| Current Consumption: | ~ 250 mA @ 12 VDC |
| Isolation: | Power supply isolated from serial ports |
| Reverse Polarity Protect: | Yes |
| MECHANICAL | |
| Weight: | G2: 2.2 kg (4.8 lb) / G2B: 2.7 kg (5.9 lb) |
| Power/Data Connection: | 18-pin female circular, IP67 sealed 15m cable |
| AIDING DEVICES | |
| Gyro: | Provides smooth heading, fast heading reacquision and reliable < 1º heading for periods up to 3 minutes when loss of GPS has occured (static conditions) |
| Tilt Sensor: | Assists in fast start up of heading solutions |
| * Depends on multipath environment, number of satellites in view, satellite geometry, baseline length (for local services), and Ionospheric activity. | |
| ** Depends on multipath environment, number of satellites in view, and satellite geometry | |
11220001
£2,232.96
11220002
£2,320.76
11220003
£3,119.39
11220004
£3,222.85
11220006
£2,232.96
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