The day of the solid state gyro is here. The day of the solid state gyro is here. The LITEF LFK95 is the heart of the system. The GEONAV SP2000 control and display unit makes it all work like a traditional gyro.
CDU FEATURES.
 | Tape screen, digital with ROT and digital heading, pitch and roll. Push button selectable. |
| Configuration menu screen leading to individual config screens. |
| GPS or manual speed and latitude input. |
| AC and DC power unit built in. |
FULL SYSTEM PERFORMANCE. LITEF LFK95
| Heading RMS accuracy 0.7 degrees * secant Latitude. |
| Roll and Pitch +/- 20 degrees. (Operates well to at least +/-60 deg.) |
| Maximum angular rate 20 deg/sec. (Operates to >85 deg/sec) |
| Maximum acceleration 10 metres/sec/sec |
| Maximum velocity for full performance 75 knots. |
| Maximum latitude for full performance 75 degrees. |
| Full alignment time 30 minutes stationary. 45 minutes at sea. |
| Generally within 1 degree in 5 minutes. |
| Type approval 6297/0010/99-S4211 from (BSH) Bundesamt fur Seeshiffahrt und Hydrograhie |
DATA FOR DISPLAY OR OUTPUT. Vacuum
fluorescent graphic. Variable illumination.
| Heading |
| Pitch and roll +/- 90 degrees. |
| Rate of turn |
CDU INPUTS
| 115 or 230 VAC at 60 VA. OR |
| 20 to 35 VDC at 50 VA. |
| GPS input. (4800/9600 auto) (The port outputs 24v to power an antenna GPS.) |
CDU OUTPUTS
| Port 1. Configurable rates. NMEA 0183 HEHDT and HEROT, plus HEXDR roll and pitch data. |
| Port 2 and Port 3. Configurable rates. 4800/9600 NMEA 0183, SKR80 or SGB. |
| STEPPER 6 steps per degree. Nominal 24 volt at 100 mA common positive, negative steps. |
| Alarm relay contact. Closed or pulses in alarm. 0.5 Amp resistive switching. |
THE SYSTEM is based on a fibre optic
coil 500 m in length, 8 cm in diameter, a modified semiconductor
laser, lithium niobate crystal and analogue to digital signals
processing. (Far too complex to describe here!) The LFK95 has
three Fibre Optic Gyros (FOG) for the X, Y and Z axis, plus
electronic level sensors.
The LFK 95 is set-up and controlled by the SP2000 CDU which also provides the power.
The SP2000 makes the system into a marine gyrocompass. In normal operation you need only switch on and forget. No operator intervention is needed. Speed and position are automatically input from a separate GPS, which is ideally an active antenna type that plugs straight into the back of the SP2000. Manual speed and latitude may be used.
INSTALLATION is easy. The configuration screen allows electronic fine-correction of heading, roll and pitch angles. The data outputs are configurable too and saved in battery-backed ram. The NMEA 0183 data may be sent to navigation aids directly or via an NMEA 0183 distribution interface. The stepper output is sufficient in power to drive several electronic interfaces, or via retransmission units for a complete installation on any ship.
CONNECTIONS. AC input IEC. Circular MIL type for DC and LFK95. Data, GPS, stepper are 9 way D socket connectors.
DIMENSIONS.
| LFK95 292 x 340 x 170 mm high. 15 kg. |
| SP2000 CDU 330 wide x 320 deep x 130 high including trunnion mounting kit. |
OPTIONS AND ACCESSORIES
| LFK95 Simulator. (Test the system without expense of LFK95.) |
| Long-line driver. Fit the LFK95 in an ROV. Tested to 9 KM!! |
| Steering repeater and display units KW991 |
| Retransmission units, stepper, synchro, NMEA 0183. |
| Yokogawa, Furuno data converters KW909. |
The SP2000 system is a development by Aditel for MERCATOR GPS SYSTEMS and GEONAV Ltd. http://www.geonav.com. - http://www.mercat.com
Back to main web site in a new window.
| ADITEL
MARINE ELECTRONICS
UK |
|
| Tel / fax | 44 (0) 1873 840405 |
| Fax: | 44 (0) 1873 840106 |
| AMI | 44 (0) 2380 480450 |
| E-mail: |
|
