MD71EMC ELECTROMAGNETIC COMPASS SYSTEM
DESCRIPTION
The Marine Data MD71EMC is an Electro-Magnetic Compass (EMC) System which detects the Earth’s magnetic field directly. It then transmits the ship’s Heading over a NMEA 0183 digital connection to one or more Heading Repeaters installed at any convenient location on a vessel. The EMC has no moving parts – unlike a TMC (Transmitting Compass) which detects the moving compass card of a ship’s compass in its binnacle.
The MD71EMC uses the latest technology to accurately process and convert the ship’s magnetic compass heading to NMEA 0183 heading data with unparalleled accuracy at speeds of up to 70 knots and rates of turn up to 20° per second. The system has been developed with improved magnetic correction facilities to reduce deviation effects caused by the magnetic influence of the craft.
FEATURES
• Provides Digital Heading Data from the Electro-Magnetic Compass
• No Moving Parts
• Unparalleled Accuracy
• Intuitive Operator Controls with Bright OLED display with high contrast and wide viewing angles
• 2x power supply inputs; 2x NMEA 0183 data channels output
• Correction of Magnetic Deviation and Variation
• Automatic Calibration
• A Backup or an Alternative to a Gyro
APPLICATIONS
• Provides a digital NMEA heading output to drive a Heading Repeater (or other devices) at a convenient location
• A solution for when size of the craft makes it physically impossible or financially imprudent to install a gyro
ACCESSORIES
• Trunnion Bracket Kit for MD71THD Control Head
RELATED PRODUCTS
• MD96JB/8 – Junction Box – to supply power and act as breakout
box for 2x NMEA 0813 data channels
• MD94DDU – Data Distribution Unit – to supply power and for
feeding several Heading Repeaters
• The complete range of Marine Data Heading Repeaters
SPECIFICATIONS
PHYSICAL
Weight &
Dimensions:
MD71THD: H 96; W 96; D 35 (mm); 0.50 kg
MD97CSP: L 146; W 64; D 41 (mm); 0.35 kg
MD53A/B: H 166; W 142; Ø 123 (mm); 1.00 kg
Excludes cables & connectors
Mounting:
MD71THD: Panel mount; Trunnion (optional)
MD53A/B: Integral Trunnion Bracket
Connections:
MD71THD: 15-way D-type plug; 9-way D-type socket;
MD53A/B: Buccaneer™ type male
MD97CSP: Buccaneer™ type female; 1x Gland
Finish: RAL7040 Window Grey, semi-gloss
ELECTRICAL
Power Supply: 24 V dc; 6 W
Data Output: 2x NMEA 0183 Data Channels
Data Sentences: HDT, HDG and HDM
OPERATIONAL
Performance: ± 1° (static) accuracy
Display: 2.7” (128 x 64 pixels); OLED – Yellow
Accuracy: <= 0.5° after ADC (depending on sensor)
Alarms: Audible sounder
ENVIRONMENTAL
IP rating:
MD71THD: IP54
MD97CSP: IP65
MD53A/B: IP65
Operating temp: -15°C to +55°C
Storage temp: -25° C to +70° C
RoHS: Compliant
Compass: Safe Distance: (MD71THD & MD97CSP): 50cm
APPROVALS
Conforms with: IEC 60945; IEC 61162-1
ADDITIONAL
Supplied: Panel Mounting Kit
Supplied: 15-way D-type data cable, 2.5 m
Supplied: 9-way D-type CAN Bus data cable; 10 m
DATASHEET