Scandinavian Micro Systems Scan Repeater SR03-01MK2 – Complete Marine Technical Guide

Product Identification

Manufacturer: Scandinavian Micro Systems AS

Country of Origin: Norway

Product Type: Universal NMEA to Step/Synchro Heading Repeater System

Model: SR03-01MK2

Marine Application:

• Gyro Compass Repeater System
• Heading Distribution System
• NMEA to Synchro Conversion
• Bridge Navigation Systems
• Autopilot Heading Distribution
• Radar Heading Input Interface
• ECDIS Heading Integration

The Scan Repeater SR03-01MK2 is a professional marine heading repeater and conversion system designed to distribute accurate heading information from a gyro compass or GPS compass to multiple navigation systems throughout a vessel.

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Scandinavian Scan Repeater SR03-01MK2

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Product Introduction

Modern vessels rely on a single heading source such as a gyro compass or satellite compass. However, multiple onboard systems require heading information simultaneously.

These systems include:

• Radar
• ECDIS
• AIS
• VDR
• Dynamic Positioning Systems
• Autopilot Systems
• Bridge Repeaters
• Navigation Computers

The Scandinavian Micro Systems Scan Repeater SR03-01MK2 acts as a heading distribution and conversion unit that receives heading information from NMEA sources and converts it into synchro or step outputs required by legacy navigation equipment.

This allows both modern and older bridge systems to operate together using the same heading source.

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What Is This Equipment?

The Scan Repeater SR03-01MK2 is essentially a heading converter and repeater system.

Its primary functions include:

Heading Acquisition

Receives heading information from:

• Gyro Compass
• GPS Compass
• Satellite Compass
• NMEA Heading Sources

Heading Conversion

Converts digital heading information into:

• Step Output
• Synchro Output
• Analog Heading Signals

Heading Distribution

Distributes heading data to:

• Radar Systems
• ECDIS
• VDR
• AIS
• Autopilot
• Bridge Repeaters

Backup Navigation Integration

Ensures continuous heading information remains available even when different equipment generations are installed onboard.

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Typical Scan Repeater Installations

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Main Features

Universal NMEA Compatibility

Supports standard marine NMEA heading sentences.

Step Output Generation

Compatible with traditional step-type heading systems.

Synchro Output Generation

Supports older synchro-based navigation equipment.

Multiple Output Channels

Feeds heading information to several bridge systems simultaneously.

High Accuracy

Maintains precise heading distribution across the vessel.

Alarm Monitoring

Built-in alarm monitoring and heading validation.

LCD Configuration Interface

Allows configuration and monitoring through onboard display.

Rugged Marine Design

Built for continuous operation in harsh marine environments.

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Main Components

Main Control Cabinet

Contains:

• Heading Processing Unit
• Output Drivers
• Alarm Monitoring Circuitry
• Power Supply

LCD Operator Interface

Used for:

• System Configuration
• Diagnostics
• Alarm Monitoring
• Heading Verification

NMEA Input Module

Receives heading information from the master heading source.

Synchro Driver Section

Provides synchro outputs for navigation systems.

Step Driver Section

Generates step signals for heading repeaters.

Alarm Circuit

Monitors heading validity and communication status.

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Technical Specifications

Model

SR03-01MK2

Software Version

MK2 Platform

Input Signal

NMEA Heading Sentences

Output Signals

• Step Output
• Synchro Output
• Repeater Output

Main Power Supply

24V DC

Marine Approval

Designed for commercial marine applications

Installation

Bridge Equipment Room

Integration

Compatible with:

• Gyro Compass
• Satellite Compass
• GPS Compass
• Radar
• ECDIS
• AIS
• VDR

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Applications Onboard Ships

Cargo Ships

Heading distribution to navigation systems.

Tankers

Reliable heading data for navigation and safety systems.

Offshore Vessels

Integration with DP and navigation systems.

Passenger Ships

Bridge heading distribution.

Naval Vessels

Multi-system heading synchronization.

Research Vessels

Navigation sensor integration.

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Heading Distribution Architecture

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Common Problems & Troubleshooting

No Heading Input

Possible Causes

• NMEA signal loss
• Gyro failure
• Wiring issue

Solution

• Verify NMEA sentences
• Check gyro output
• Inspect communication cables

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Synchro Output Failure

Possible Causes

• Output board damage
• Wiring fault
• Incorrect configuration

Solution

• Check synchro driver board
• Verify terminal wiring
• Reconfigure output settings

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Step Output Not Working

Possible Causes

• Driver failure
• Broken repeater circuit

Solution

• Verify output voltage
• Check repeater wiring
• Inspect driver module

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Heading Mismatch

Possible Causes

• Calibration error
• Incorrect offset settings

Solution

• Verify heading source
• Adjust configuration parameters

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Alarm Active

Possible Causes

• Heading source lost
• Communication timeout

Solution

• Check NMEA communication
• Verify heading source operation

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Maintenance Recommendations

Daily

• Verify heading display.
• Check alarm indicators.

Weekly

• Inspect system status.
• Verify heading outputs.

Monthly

• Check NMEA communication quality.
• Inspect terminal connections.

Quarterly

• Test repeater outputs.
• Verify synchro performance.

Annually

• Full heading distribution test.
• Calibration verification.
• Power supply inspection.

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Why Ships Still Use Heading Repeater Systems

Even with modern integrated bridge systems, dedicated heading repeaters remain essential because:

• Legacy equipment still requires synchro signals.
• Multiple systems need simultaneous heading data.
• Redundancy improves reliability.
• Radar and autopilot systems depend on stable heading input.
• Heading distribution failures can affect navigation safety.

The Scan Repeater SR03-01MK2 provides a reliable bridge between modern NMEA systems and traditional marine navigation equipment.

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Frequently Asked Questions (FAQ)

What does the Scan Repeater SR03-01MK2 do?

It converts and distributes heading information from a gyro or GPS compass to multiple onboard navigation systems.

Can it work with NMEA heading sources?

Yes. It is designed specifically for NMEA heading inputs.

What outputs does it support?

Step outputs and synchro outputs for marine repeater systems.

Is it suitable for radar integration?

Yes. Radar systems commonly use heading data distributed through repeater systems.

Can it be connected to a gyro compass?

Yes. It is frequently installed between a gyro compass and ship navigation systems.

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Short Product Description

The Scandinavian Micro Systems Scan Repeater SR03-01MK2 is a professional marine heading distribution and conversion system designed to receive NMEA heading data and provide synchro and step outputs for radar, ECDIS, AIS, VDR, autopilot, and repeater compass systems. Manufactured in Norway, the SR03-01MK2 is widely used on commercial vessels requiring reliable heading signal integration between modern and legacy navigation equipment.

SM MARINE SERVICE™

Marine Automation & Navigation Equipment Supplier

Available Condition:

• New Equipment
• Used Equipment
• Refurbished Equipment
• Reconditioned Equipment

Stock Location:

• Bangladesh
• China

Services:

• Worldwide Shipping
• Technical Support
• Spare Parts Supply
• Marine Equipment Sourcing

Contact Information

SM MARINE SERVICE™
Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh

Mobile / WhatsApp / Viber: +88 01818 929292

Email: info@smmarineservice.com

Website: www.smmarineservice.com

SM MARINE SERVICE™ supplies Gyro Compass Systems, Heading Repeaters, Radar Equipment, ECDIS, AIS, GPS, VDR, Autopilot Systems, Marine Automation Equipment, Navigation Spare Parts, and Technical Marine Solutions worldwide.

User Manual & Technical Resources
Scan Repeater SR03-01MK2