MD69BR Trunnion mounted bearing repeater
MD69BR with MD69AZI Azimuth Sight (accessory)MD69BR with MD69BC Bearing Circle (accessory)MD69BR with MD60A2K Telescopic Alidade (accessory)

MD69BR TRUNNION MOUNTED BEARING REPEATER

MODEL NUMBER: MD69BR

A gimballed dual scale 36:1 precision Bearing Repeater designed for taking celestial and terrestrial bearings

Product Description

OVERVIEW

The MD69BR Bearing Repeater is a dual scale NMEA 0183 based heading repeater designed for taking celestial and terrestrial bearings. Equipped with a 36:1 precision dual scale compass card display. Digital heading data (ship’s heading) may be conveniently displayed at any location on a vessel.

With a range of mounting options and accessories, the MD69BR offers a bearing repeater solution for most locations and may be bulkhead, surface or stand mounted. Finished in RAL7040 window grey to complement other external marine navigation equipment.

The MD69BR Bearing Repeater from MARINE DATA: Flexible in application, easy to install and simple to maintain.

SPECIAL FEATURES

  • Dual scale 36:1 precision concentric dial display
  • Gimballed and balanced for optimal taking of bearings using the optional MD69AZI Azimuth Sight
  • Automatic selection and prioritisation of NMEA heading data type
  • Automatic warning of loss of valid heading data
  • Automatic detection of a previously lost heading data type without requiring a reset
  • True / Magnetic Source Indication
  • Local and Remote dimming control

APPLICATIONS

  • Repeats the heading display of a ship’s magnetic or gyro compass at a convenient location on a vessel
  • Allows celestial and terrestrial bearings to be taken when used in conjunction with the MD69AZI Azimuth Sight or theMD69BC Bearing Circle. The MD60A2K Telescopic Alidade is recommended for making detailed azimuth measurements.

Product Specifications

PHYSICAL

  • Weight: 7.0 kg (optimally balanced for Azimuth Sight)
  • Dimensions: H 164mm W 325mm; Body Ø 246 mm Outer dial Ø 185 mm; Inner dial Ø 95 mm Verge ring 20 mm (visible)
  • Mounting: Gimbal & Trunnion (standard); Pelorus Stand and Bulkhead Bracket options available
  • Connections: Multicore cable through watertight gland
  • Construction: Aluminium alloy enclosure
  • Finish: RAL7040 Window Grey, semi-gloss

ELECTRICAL

  • Power Supply: 24 V dc 8 W nominal (22-31 V dc)
  • Data input: RS422 NMEA 0183; 4800 Baud; others available
  • Data sentences: HDT, HDG and HDM; selected in descending order of priority
  • Cable: 2.5 m multicore data cable tail

OPERATIONAL

  • Performance: ± 0.01° resolution
  • Follow-Up Rate: 20° per second
  • Gimbal Action: ±45° pitch and roll
  • Display: Dual scale 36:1 rotating dial display
  • Heading LEDs: Blue = True Heading; Yellow = Magnetic Heading
  • Resolution: Outer scale marked at 1°, 5°, 10° & 45°; Inner scale marked at 0.1° & 1°
  • Illumination: LED array with local & remote dimming control; red tint
  • Error Indication: Loss of valid data: Dial oscillates ±35° about the last known good heading; dial illumination flashes

ENVIRONMENTAL

  • IP rating: IP67
  • Operating temp: -25°C to +55°C
  • Shock: STANAG 4549 - NS (0.03; 3.0; 300)
  • Vibration: MIL-Std-167-1A / IEC 60945
  • EMC: MIL-Std-461E / IEC 60945
  • Thermal: MIL-Std-810F / IEC 60945
  • Noise: MIL-Std-1474D <= 53 dB
  • Compass: Safe Distance 100 cm

APPROVALS

  • Type Approval: Germanischer Lloyd (GL)

ADDITIONAL INFORMATION

  • Supplied: MD69CB/W IP65 rated waterproof terminal box

ACCESSORIES

  • MD69AZI - Azimuth Sight with sun filters, Thomson Pattern - Product F069051
  • MD69BC - Bearing Circle with sighting vanes and shadow pin - Product F069052
  • MD60A2K - Precision Telescopic Alidade - Product F060001

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