Technical Specification

Performance:

• Heading Accuracy:
  • Static: ≤0.1∘ secant latitude
  • Dynamic: ≤0.4∘ secant latitude
  • Settle Point Error: ≤0.1∘ secant latitude
• Mean Settling Time: $<3$ hours (from cold start)
• North Stabilization during Power Interruptions: Up to 3 minutes (gyro remains north-stabilized within required accuracy)
• Follow-up Speed: Up to 100∘/sec
• Freedom of Roll and Pitch: ±40∘
• Mean Time Between Failures (MTBF): $>40,000$ hours
• Maintenance Intervals: 18 months

Power Supply:

• Main Power Supply: 24 VDC (Range: 18 VDC – 36 VDC)
• Backup Power Supply: 24 VDC (Range: 18 VDC – 36 VDC)
  • Includes automatic switch-over in accordance with GMDSS rules.
• Power Consumption:
  • Start-up: 80 W DC
  • Operation: 45 W DC
  • Each Analog Repeater: 7 W DC (or 8 W DC depending on source)
  • Each Digital Repeater: 7 W DC

Data Interfaces (Inputs):

• Position: 1 input, IEC 61162-1
• Speed: 1 input, IEC 61162-1 or 200 pulses/nm
• Heading from Electronic Compass (e.g., Magnetic Compass): 1 input, IEC 61162-1
• Steering Mode Status: 1 input (Man/Auto from selector)
• External Heading Source Status: 1 input (Gyro/Mag from selector)
• Alarm Mute: 1 input from external control

Data Interfaces (Outputs):

• Analogue Repeater Outputs: Up to 4 outputs
• NMEA TTL Outputs: 4 outputs (typically for gyrocompass heading, magnetic compass heading*, rate of turn, heading reference status to compass repeaters). *Note: Magnetic compass heading if integrated.
• Sensor Data 1 RS 422: 1 output (gyrocompass heading, magnetic compass heading*, rate of turn, heading reference status, position*, speed*).
• Sensor Data 2 RS 422: 1 output (gyrocompass heading, magnetic compass heading*, rate of turn, heading reference status).
• Fast Output IEC 61162-1: 1 output (reduced dataset: gyrocompass heading, rate of turn, heading reference status).
• Superfast Output RS 422 (IEC 61162-1 or IEC 61162-2 selectable): 1 output (adjustable baudrate, max. 38400 baud: gyrocompass heading, rate of turn, heading reference status).
• Furuno AD10 Output: 1 output (gyrocompass heading).
• 6 Steps/Degree Output: 1 output (for heading).
• Analogue Rate-of-Turn Output: 1 output (selectable output of ±30,±90,±300∘/min or customized from $\pm 0.1$ to 999.9mV/∘/min; $\pm 10\text{V},10\text{mA max.}$).
• Alarm Signals (Relay):
  • 1 relay for power failure / general device error
  • 1 relay for heading difference alarm

Physical and Environmental:

• Dimensions (Approximate):
  • Width: 404 mm (15.9 inches)
  • Height: 520 mm (20.5 inches)
  • Depth: 420 mm (16.5 inches)
• Weight:
  • Typically listed as 21 kg (46.3 lbs)
  • Some sources may state 25 kg (55.1 lbs)
• Operating Temperature: −10∘C to +55∘C
• Storage Temperature: (Typically wider range than operating)
• Protection Grade: IP 23 (according to IEC 60529/DIN 40050)
• Magnetic Clearance: 0.6 m to standard magnetic compass

Compliance and Approvals:

• IMO Regulations: A.424(XI), A.694(17)
• ISO Standard: 8728
• Type Approval: Wheelmark (MED 96/98/EC), Germanischer Lloyd (GL)

Additional Features:

• Automatic North Speed Error Correction: Integrated, no external unit required.
• Electronic Alignment Error Correction: ±180∘ (in setup program, no mechanical correction needed).
• Digital Heading Measurement: 13-bit absolute value using a digital shaft encoder.
• Monitoring and Alarms: For supply voltages, gyroscope current, follow-up system.
• Permanent Data Storage: Operational data (gyrosphere current, temperature, elapsed operation time).