Copyright © 2015 Maretron, LLP All Rights Reserved
9014 N. 23rd Ave #10
Part #: M003069
Table of Contents
Table of Figures
Table of Appendices
Appendix A – NMEA 0183 Interfacing............................................................................................... A1
Appendix B – NMEA 2000® Interfacing............................................................................................. B1
Appendix C – Connecting to a PC Via NMEA 0183....................................................................... C1
Appendix D – Configuring the SSC300 to Transmit True Heading Data.................................... D1
Appendix E – Configuring the SSC300 to Transmit the HDT Sentence for …and Radars..... E1
Congratulations on your purchase of the Maretron SSC300 Solid State Rate/Gyro Compass. Maretron has designed and built your compass to the highest standards for years of reliable, dependable, and accurate service.
Maretron’s SSC300, implementing the second generation of Maretron's award-winning solid state compass technology, is a solid state, rate gyro electronic compass that provides better than 0.7° heading accuracy through ±45° of roll and pitch angle, and better than 1° roll and pitch accuracy in static conditions. Each SSC300 is factory calibrated for maximum accuracy. It delivers precise, reliable heading and rate of turn information ten times per second, and vessel attitude including pitch and roll readings once per second.. A micromachined 3-axis rate gyro is used in conjunction with the 3-axis accelerometer by advanced stabilization algorithms to provide accurate, stable readings during dynamically changing conditions such as hard turns or rough seas, making it an ideal heading sensor for autopilot or radar overlay applications.
Maretron’s SSC300 is certified to the NMEA 2000® network standard and compatible with the NMEA 0183 digital interface standard. It connects directly with any NMEA 2000® network, and, with the optional NMEA 0183 cable accessory, with NMEA 0183 listeners to share information with navigational software, chart plotters, autopilots, and dedicated instrument displays – including Maretron’s graphical displays and N2KView® software.
The SSC300 can be automatically calibrated for deviation. Its dynamic accuracy is improved with advanced digital filtering of the 3-axis magnetometer, 3-axis accelerometer and 3-axis rate gyro.
The SSC300 is engineered and manufactured to the highest standards (IEC 60945 Maritime Navigation and Radiocommunication Equipment). Its compact waterproof housing will provide years of reliable performance.
The Maretron SSC300 is designed to operate within the harsh demands of the marine environment. However, no piece of marine electronic equipment can function properly unless installed, calibrated, and maintained in the correct manner. Please read carefully and follow these instructions for installation, calibration, and usage of the Maretron SSC300 in order to ensure optimal performance.
This manual corresponds to SSC300 firmware revision 1.0.
The Maretron SSC300 Solid State Compass has the following features.
· Better than 0.7° heading accuracy in status conditions
· Better than 1.5° heading accuracy in dynamic conditions
· Better than 1°/second rate of turn accuracy
· Better than 1° pitch/roll accuracy
· Three-axis magnetometer, Three-axis rate gyro, and Three-axis accelerometer
· Outputs NMEA 0183 and NMEA 2000 data simultaneously (optional NMEA 0183 cable accessory required for NMEA 0183 output)
· IP67 waterproof enclosure
Maretron offers the following accessories for the SSC300:
· FA-CF-ST Micro/Mid Field Attachable Connector (Straight Female)
· MARE-004-1M-7 SSC200/SSC300 Compass NMEA 0183 10 meter connection cable
Installing the Maretron SSC300 compass involves the following six steps. Please refer to the individual sections for additional details.
1. Unpack the Box (Section 2.1)
2. Choose a Mounting Location (Section 2.2)
3. Mount the SSC300 Compass (Section 2.3)
4. Connect the SSC300 Compass (Section 2.4)
5. Calibrate the SSC300 Compass for Magnetic Deviation (Section 3.2)
6. Calibrate the SSC300 Compass for Installation-Offset (Section 3.4)
7. Use Default Variation Source or Select an Appropriate Variation Source (Section 4)
When unpacking the box containing the Maretron SSC300, you should find the following items.
1 - SSC300
· 2 - Mounting Brackets
· 4 - Mounting Bracket Screws
· 4 - Mounting Screws
· 1 - SSC300 User’s Manual
· 1 - Warranty Registration Card
If any of these items are missing or damaged, please contact Maretron.
The selection of a suitable mounting location is important for the optimal performance of the Maretron SSC300. The mounting location and orientation of the Maretron SSC300 should be:
1. Level with the Earth’s Horizontal Plane – Although the SSC300 can be calibrated in the vessel to compensate for pitch and roll installation-offset, it is best to mount the compass as level as possible to maximize its pitch and roll operational range.
2. Oriented with Arrow Pointing to Bow Parallel to Vessel Centerline – Although the SSC300 can be calibrated in the vessel to compensate for heading installation-offset, it is best to mount the compass pointed towards the bow and parallel to the vessel centerline. The SSC300 can be mounted in other orientations, although this requires additional configuration steps; please refer to Section 2.3 on page 3 for details.
3. Near the Center of Gravity (CG) of the Vessel – The compass experiences the least amount of movement when located at the CG, which allows the most accurate readings. This is similar to a traditional card/needle compass, where the farther the compass is from the CG, then the more the fluid sloshes around, making accurate readings more difficult.
4. Away from Structures Containing Ferrous Metals – The earth’s lines of magnetic flux tend to become distorted in the vicinity of ferrous metals, which can potentially cause errors in the compass’s indicated heading. The SSC300 can be calibrated to compensate for these errors, but it is still best to minimize the errors by placing the compass as far away from ferrous metals as is practical.
5. Away from Magnetic Field Sources – Power or ignition cables, electric motors, and other electronic equipment can create magnetic fields. The earth’s lines of magnetic flux tend to become distorted in the vicinity of magnetic field sources, which can potentially cause errors in the compass’s indicated heading. The magnetic fields tend to come and go as power is switched on and off, which makes compensation impractical. Therefore, you should try to mount the compass as far away as possible from these magnetic field sources (doubling the distance between the magnetic field source and the compass will reduce the field strength by a factor of approximately 8). Also, always observe any “compass-safe distance” markings on other electronic equipment.
6. Minimal Vibration – Although the SSC300 is more tolerant of vibration than a fluxgate compass, it is best to mount the compass in a location free of vibration as opposed to a location with vibration.
7. Limited Water Exposure – The SSC300 has an IP67 rating which means the compass is able to withstand nozzle spray and is protected against water immersion up to 1m for up to 30 minutes. Please avoid areas which would result in the SSC300 being immersed in water which exceeds these depths or times.
The Maretron SSC300 compass can be mounted to a horizontal surface such as a floor or deck (Section 2.3.1) or it can be mounted to a vertical surface such as a wall or bulkhead (Section 2.3.2).
Mounting the SSC300 compass to a horizontal surface requires that the provided mounting brackets be fastened to the bottom of the SSC300 using the provided brass flat head screws. Once the mounting brackets are securely fastened to the bottom of the SSC300, attach the SSC300 securely to the vessel using the included brass mounting screws or other non-ferrous fasteners as shown in Figure 1. Do not use threadlocking compounds containing methacrylate ester, such as Loctite Red (271), as they will cause stress cracking of the plastic enclosure.
The usual way of mounting the SSC300 to a horizontal surface is to mount it to the top of the horizontal surface; however, the SSC300 may be mounted upside down to the underside of a horizontal surface, provided that the SSC300 is programmed to recognize that it is mounted upside down. This can be done using a Maretron DSM150 display, DSM250 display, or Maretron N2KAnalyzer software (please refer to the appropriate user’s manual for details), or through a command sent to the SSC300 via the NMEA 0183 interface (please refer to Appendix A for details).
Figure 1 – Mounting the SSC300 to a Horizontal Surface
Mounting the SSC300 compass to a vertical surface requires that the provided mounting brackets be fastened to the side of the SSC300 using the provided brass flat head screws. Once the mounting brackets are securely fastened to the side of the SSC300, attach the SSC300 securely to the vessel using the included brass mounting screws or other non-ferrous fasteners as shown in Figure 2. Do not use threadlocking compounds containing methacrylate ester, such as Loctite Red (271), as they will cause stress cracking of the plastic enclosure. The use of adhesives, Velcro, straps, or any mounting hardware not supplied with the SSC300 is not recommended, as it may adversely affect the performance of the SSC300.
The usual way of mounting the SSC300 to a vertical surface is attaching the SSC300 to the forward side of a vertical surface, so that the side of the compass with the connectors is facing the bow of the boat; however, the SSC300 may be mounted to the astern side of a vertical surface, so that the side of the compass with the connectors is facing the stern of the boat, provided that the SSC300 is programmed to recognize that it is mounted in this way (“backwards”). This can be done using a Maretron DSM150 display, DSM250 display, or Maretron N2KAnalyzer software (please refer to the appropriate user’s manual for details), or through a command sent to the SSC300 via the NMEA 0183 interface (please refer to Appendix A for details).