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Maretron SSC200 User Manual

Solid state rate/gyro compass
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SSC200
Solid State Rate/Gyro Compass
User's Manual
Revision 1.8
Copyright © 2012 Maretron, LLP All Rights Reserved
Maretron, LLP
rd
9014 N. 23
Ave #10
Phoenix, AZ 85021-7850
http://www.maretron.com
Maretron Manual Part #: M000401
Revision 1.8
Page i

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Summary of Contents for Maretron SSC200

  • Page 1 ® ® SSC200 Solid State Rate/Gyro Compass User’s Manual Revision 1.8 Copyright © 2012 Maretron, LLP All Rights Reserved Maretron, LLP 9014 N. 23 Ave #10 Phoenix, AZ 85021-7850 http://www.maretron.com Maretron Manual Part #: M000401 Revision 1.8 Page i...
  • Page 2 Updated Appendix A Maretron Proprietary Execute Sentence definitions. Updated Appendix A Maretron Proprietary Set Period sentence table. Added programming examples to Appendix A Maretron Proprietary Set Period for enabling, disabling, and changing frequency of transmission of different NMEA 0183 sentences.

  • Page 3: Table Of Contents

      Rate of Turn ........................15       Rate of Turn Damping Period Selection with Maretron Display ....... 16   Rate of Turn Damping Period Selection by NMEA 0183 Interface ......16     Rate of Turn Zeroing ....................16  ...
  • Page 4 SSC200 User’s Manual Table of Figures Figure 1 – Mounting the SSC200 to a Horizontal Surface ............4 Figure 2 – Mounting the SSC200 to Vertical Surface ..............5 ® Figure 3 – NMEA 2000 / NMEA 0183 Interface Connector Locations ........6 ®...

  • Page 5: General

    1.1 Introduction Congratulations on your purchase of the Maretron SSC200 Solid State Rate/Gyro Compass. Maretron has designed and built your compass to the highest standards for years of reliable, dependable, and accurate service. The SSC200 detects the direction of the earth’s magnetic field using solid state magnetometers and indicates the vessel heading relative to magnetic north.

  • Page 6: Installation

    7. Use Default Variation Source or Select an Appropriate Variation Source (Section 4) 2 Installation 2.1 Unpacking the Box When unpacking the box containing the Maretron SSC200, you should find the following items. • 1 - SSC200 Solid State Compass • 2 - Mounting Brackets •...

  • Page 7: Mounting The Ssc200

    2.3 Mounting the SSC200 The Maretron SSC200 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).

  • Page 8: Mounting The Ssc200 To A Vertical Surface

    SSC200 is programmed to recognized that it is mounted in this way (“backwards”). This can be done using a Maretron display product (e.g., DSM200 - please refer to the DSM200 user’s manual for details).

  • Page 9: Connecting The Ssc200

    ® ® Figure 2 – Mounting the SSC200 to Vertical Surface 2.4 Connecting the SSC200 ® You have a choice of connecting the SSC200 to a NMEA 2000 interface (Section 2.4.1), NMEA 0183 interface (Section 2.4.2), or connecting both interfaces simultaneously (Section 2.4.2.2).

  • Page 10: Connecting To Nmea 2000 Interface

    / NMEA 0183 Interface Connector Locations ® 2.4.1 Connecting to NMEA 2000 Interface ® The Maretron SSC200 provides a connection to an NMEA 2000 interface through a five pin ® male connector (Figure 4). You connect the SSC200 to an NMEA 2000 network using a ®...

  • Page 11: Connecting To Nmea 0183 Interface

    (Figure 6). You connect the SSC200 to an NMEA 0183 network using the Maretron supplied 10 meter cable by connecting the female end of the cable to the SSC200 (note the key on the male connector and keyway on the female connector). Be sure the cable is connected securely and that the collar on the cable connector is tightened firmly.

  • Page 12: If The Nmea 2000 ® Interface Is Connected, Power Is Supplied To The Ssc200

    SSC200 User’s Manual Figure 6 – NMEA 0183 Connector Face Views Connect the other end of the cable consisting of individual wires using recommended practices for installing NMEA 0183 products. Please note that NMEA 0183 does not have a standard for connectors and the customer/installer should contact the manufacturer of the equipment to which the SSC200 is being connected for information on how to properly connect the device to the SSC200.

  • Page 13: Figure 8 - Ssc200 With Nmea 0183 Connection Only

    ® ® Figure 8 - SSC200 with NMEA 0183 Connection Only 2.4.2.2 Supported NMEA 0183 Baud Rates The SSC200 compass supports NMEA0183 communication at both 4800 baud and 38400 baud. All SSC200 Compasses are shipped with a baud rate of 4800 baud. The baud rate may be set to 38400 baud by connecting to the compass using a teminal emulator (See Appendix C for details) and sending the following strings to the compass through the NMEA 0183 connection:...

  • Page 14: Connecting Both Nmea 2000

    These errors are referred to as magnetic deviation. The Maretron SSC200 compass can compensate for heading errors caused by magnetic deviation by learning about the magnetic environment in which it has been mounted. This is done using one of four possible magnetic deviation calibration procedures.

  • Page 15: Maretron Display Initiated Deviation Calibration

    Therefore, it is important to verify that the deviation calibration process completed successfully. The preferred method for deviation calibration is to use a Maretron display (procedure 1) because you receive direct feedback on the calibration process with a clear indication of a successful or unsuccessful deviation calibration.

  • Page 16: Installation-Offset Correction

    4. Through the NMEA 2000 Interface (Appendix B) The preferred method for installation-offset is to use a Maretron display (procedure 1) which will automatically calibrate the SSC200 without physically adjusting the compass as describe under procedure 2 (Manual Installation-Offset Correction). As an alternative to procedures 1 ®...

  • Page 17: Variation

    ® ® 2. With the vessel laying flat in the water, adjust the pitch angle of the SSC200 by adding small washers or spacers between the mounting bracket holes and mounting surface until the display reads zero for the pitch angle (skip this step if you are not interested in viewing the vessel’s pitch angle).

  • Page 18: Variation Input Via The Nmea 2000 Interface

    SSC200 User’s Manual 1. Transmit the Heading, Deviation & Variation (HDG) sentence including the variation field as seen from the RMC or VTG sentence over the NMEA 0183 interface if HDG is enabled (see Appendix A for enabling or disabling NMEA 0183 sentences). 2.

  • Page 19: Variation Source Selection

    2. Through the NMEA 0183 Interface (Section 4.4.2) 4.4.1 Variation Source Selection via Maretron Display You can program the SSC200 to use a particular variation source using a Maretron display product (e.g., DSM200). Refer to the display product user’s manual for details on programming the SSC200 to use a specific variation source.

  • Page 20: Rate Of Turn Damping Period Selection With Maretron Display

    5.1 Rate of Turn Damping Period Selection with Maretron Display You can program the SSC200 to use a particular rate of turn damping period using a Maretron display product (e.g., DSM200). Refer to the display product user’s manual for details on programming the SSC200 to use a specific damping period.

  • Page 21: Troubleshooting

    Repeat the magnetic deviation compensation and installation-offset correction procedures Figure 9 – Trouble Shooting Guide If these steps do not solve your problem, please contact Maretron Technical Support (refer to Section 9 for contact information). Warning: There are no user-serviceable components inside the Maretron SSC200.

  • Page 22: Technical Specifications

    Sentences Heading, Magnetic (Not normally transmitted, see Appendix A) Heading True (Not normally transmitted, see Appendix A) Rate of Turn 5 Times/Second PMAROUT Maretron Proprietary Attitude (Pitch and Roll) 1 Time/Second Text Transmission Received Recommended Minimum Specific GNSS Data Sentences...

  • Page 23: Technical Support

    Conducted, Radiated, Supply, and ESD per IEC 60945-10 Safety Precautions Dangerous Voltage, Electromagnetic Radio Frequency per IEC 60945-12 9 Technical Support If you require technical support for Maretron products, you can reach us in one of the following ways: Telephone: 1-866-550-9100...

  • Page 24: Installation Template

    SSC200 User’s Manual 10 Installation Template Please check the dimensions before using the following diagrams as templates for drilling the mounting holes because the printing process may have distorted the dimensions. 3 87” 1.42” Figure 10 – Horizontal Mounting Surface Template 2.75”...

  • Page 25: Maretron (2 Year) Limited Warranty

    Maretron’s option, of any product not meeting the above limited warranty and which is returned to Maretron; or if Maretron is unable to deliver a replacement that is free from defects in materials or workmanship, Purchaser’s payment for such product will be refunded.
  • Page 26 SSC200 User’s Manual This page intentionally left blank Page 22 Revision 1.8...

  • Page 27: Appendix A - Nmea 0183 Interfacing

    B: This field indicates whether data is valid, an “A” indicates that the data is valid where a “V” indicates invalid data MAROUT – Maretron Proprietary Output Sentence Since there is no standard NMEA 0183 sentence for indicating the vessel’s attitude (pitch and roll), the SSC200 uses a proprietary sentence to indicate pitch and roll one time per second.
  • Page 28 SSC200 User’s Manual D-I: Null TXT – Text Transmission The SSC200 transmits various status messages using the text transmission sentence. $IITXT,A,B,C,D*hh<CR><LF> Field A: Always reads “01” B: Always reads “01” C: Message identifier (see following table) D: Text string (see following table) Message Text String Description...
  • Page 29 If a checksum is present in a received sentence, then it is used to check the integrity of the sentence, which is accepted only if the calculated checksum agrees with the checksum at the end of the received sentence. To ensure the best possible data integrity, Maretron recommends using NMEA 0183 checksums whenever possible.
  • Page 30 $PMAREXE,SSC200,,50,,,,<CR><LF> Will cause the SSC200 to retransmit the last deviation calibration status message PMARSETPX – Maretron Proprietary Set Period Sentence The SSC200 can be programmed to enable or disable the periodic transmission of the HDG, HDM, HDT, ROT, and PMAROUT sentences. In addition, the periodic transmission rate for these sentences and the Variation Lifetime (see RMC and VTG) can be programmed using this sentence.
  • Page 31 SSC200 NMEA 0183 Initiated Deviation Calibration NMEA 0183 initiated deviation calibration is accomplished by turning the vessel through at least 3 complete circles after the SSC200 receives a Maretron proprietary NMEA 0183 sentence. The procedure is as follows: 1. Ensure that the compass has been properly installed per Section 2, 2.
  • Page 32 $IITXT,01,01,03,Deviation Calibration Failed To Complete*43<CR><LF> This sentence indicates that the calibration failed (return to step number 1). 6. Turn the periodic transmissions back on by sending the following Maretron proprietary NMEA0183 sentence to the SSC200 - $PMAREXE,SSC200,,FD,1,,,<CR><LF> 7. Proceed to Installation-Offset Correction...

  • Page 33: Appendix B - Nmea 2000 Interfacing

    ® ® ® Appendix B – NMEA 2000 Interfacing ® SSC200 NMEA 2000 Periodic Data Transmitted PGNs PGN 127250 – Vessel Heading The SSC200 uses this PGN to indicate the vessel’s heading. The Heading Sensor Reading (field 2) includes deviation, therefore Deviation (field 2) always contains zero. Variation (field 4) is not provided by the SSC200, therefore this field always contains a value of 0x7FFF (data not available).
  • Page 34 PGN 126270 – Maretron Proprietary Slave Response – Deviation Calibration Status This indicates the status of the deviation calibration process. Field 1: Maretron Vendor ID and Industry Code (16 bits) – this field’s value will be 0x9889 ® 2: Product Code (16 bits) – this field’s value will be 0x1B2, which is the NMEA 2000 product code for the SSC200.
  • Page 35 6: Number of First Commanded Parameter (8 bits) – set this field’s value to 0x1 7: Maretron Vendor ID and Industry Code (16 bits) – set this field’s value to 0x9889 8: Number of Second Commanded Parameter (8 bits) – set this field’s value to 0x02 ®...
  • Page 36 6: Number of First Commanded Parameter (8 bits) – set this field’s value to 0x1 7: Maretron Vendor ID and Industry Code (16 bits) – set this field to 0x9889, which is a combination of Maretron’s vendor ID and the marine industry code 8: Number of Second Commanded Parameter (8 bits) –...
  • Page 37 NMEA 2000 initiated deviation calibration is accomplished by turning the vessel through at ® least 3 complete circles after the SSC200 receives a Maretron proprietary NMEA 2000 PGN. The procedure is as follows: 1. Ensure that the compass has been properly installed per Section 2, 2.
  • Page 38 SSC200 User’s Manual This page intentionally left blank ® Page B6 Appendix B – NMEA 2000 Interfacing Revision 1.8...

  • Page 39: Appendix C - Connecting To A Pc Via Nmea 0183

    Ensure that the NMEA 0183 signals from the SSC200 are connected to nothing else besides the computer’s RS-232 port to avoid ground loops. While some people have had success with this method, Maretron cannot guarantee that such a connection will work with every computer and highly recommends the use of a level converter.
  • Page 40 SSC200 User’s Manual This page intentionally left blank Page C2 Appendix C – Connecting to a PC Via NMEA 0183 Revision 1.8...

  • Page 41: Appendix D - Configuring The Ssc200 To Transmit True Heading Data

    ® ® Appendix D – Configuring the SSC200 to Transmit True Heading Data The SSC200 is factory configured to transmit magnetic heading data on the NMEA0183 interface. Some NMEA 0183 applications require true heading data. This application note describes how to configure the SSC200 to transmit true heading data Prerequisites: •...
  • Page 42 SSC200 User’s Manual $PMAREXE,SSC200,,5D,0,<variation>,, Where <variation> is the magnetic variation in units of degrees and resolution in tenth of degrees – positive values represent easterly variation, and negative values represent westerly variation. For example, to program the SSC200 with 18.0° easterly magnetic variation, as might be seen in Seattle, WA, USA, type the sentence: $PMAREXE,SSC200,,5D,0,18.0,, To program the SSC200 with 5.5°...

  • Page 43: Appendix E - Configuring The Ssc200 To Transmit The Hdt Sentence For

    The SSC200 compass must have firmware revision 1.7 or greater. • The SSC200 compass must have a GPS source for magnetic variation information or must be manually programmed with the local magnetic variation (Please see Maretron Application Note #2, “Configuring the SSC200 to transmit True Heading Data”) Instructions: 1.
  • Page 44 SSC200 User’s Manual This page intentionally left blank Page E2 Appendix E – Transmitting the HDT Sentence Revision 1.8...
  • Page 45 ® ® Appendix F – Changing the NMEA0183 Identifier Transmitted by the SSC200 The identifier for NMEA0183 sentences transmitted by the SSC200 is set by the factory to be “II”; however, some users may need to change this to other values. This addendum explains how to change the NMEA 0183 identifier for the SSC200.

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