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SSC200 Solid State Rate/Gyro Compass User`s Manual

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1. cccececcccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaeeeeeeeeees 10 3 2 Magnetic Deviation Calibration ss cexces tet cczectatdvesahessipeceet duane ba tates tgteneteka ecto tatetelds 10 3 2 1 Maretron Display Initiated Deviation Calibration ccccccccecceceseeeeeeees 11 3 2 2 Automatic Power Up Deviation Calibration ccccceeceeeeeeeeeeeeeeeeeeeees 12 3 3 Installation Offset Correction cccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeecaaeeeeeeeeeeeeesesnaaeaeeeeeees 12 3 3 1 Maretron Display Product Offset Correction cccccccccceccceceeeeeeeeeeeeees 12 3 3 2 Manual Installation Offset Correction cccceeeceeeeeeeeeeeeeeeneeeeeeeeeeeeeeees 13 4 Variation iveurchuctanenobuoreccdeothatehapehecthcsrheetsuereht ibrbcandbhhestarhebeatbbhchueniincbeanbihehennbenbeanbetecnest 13 4 1 Variation Input via NMEA 0188 Interface cccceecceeeeeeeeeeeeeneeeeeeeeeeeeeseeeeeeeeeeees 14 4 2 Variation Input via the NMEA 2000 Interface cccccceccccsecsseessecseeesseesseenseeeees 14 4 3 Variation Input via Manual Entry sixes ote ces cotacecs cwteanan cus caeg cadeenetindiceesenteawettedtenes inet caus 14 4 4 Variation Source Selection ccccccceceeeeeeeeeeeeececeeeeeeeeeeeneaaeaeeeeeeeeeeeseneneeaeeeeeees 15 4 4 1 Variation Source Selection via Maretron Display cceccceeseeeeeeeeees 15 4 4 2 Variation Source Selection via NMEA 0183 Interface ccseeeees 15 5 Rae o
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 Revision 1 9 Page 5 SSC200 User s Manual NMEA 2000 Power NMEA 0183 Connector Connector Figure 3 NMEA 2000 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 Maretron NMEA 2000 cable or compatible 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 as shown in Figure 5 below Be sure the cable is connected securely and that the collar on the cable connector is tightened firmly Connect the other end of the cable male to the NMEA 2000 network in the same manner The SSC200 is designed such that you can plug or unplug it from an NMEA 2000 network while the power to the network is connected or disconnected Please follow recommended practices for installing NMEA 2000 network products O Pins Sockets Connector Threads Connector Threads Male Connector Female Connector Pin 1 Shield Pin 2 NET S power supply positive V Pin 3 NET C power sup
3. Manual installation offset correction is performed by physically aligning the compass with the vessel The procedure is as follows 1 With the vessel laying flat in the water adjust the roll 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 roll angle skip this step if you are not interested in viewing the vessel s roll angle 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 3 With the vessel laying flat in the water on a known heading adjust the heading of the SC200 by rotating it until the display reads the known vessel heading 4 Recheck that the roll and pitch readings are zero and that the indicated heading is correct repeat steps 1 through 3 as necessary 5 Securely fasten the SSC200 by tightening the mounting screws 4 Variation Variation is the angular difference between the true meridian great circle connecting the geographic poles and the magnetic meridian direction of the lines of magnetic flux Variation has different values at different locations on the earth with most areas undergoing change to the variation over time Normally heading information is displayed as e
4. Calibrate the SSC200 Compass for Installation Offset Section 3 3 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 4 Mounting Bracket Screws 4 Mounting Screws 1 10 meter NMEA 0183 Cable 1 NMEA 2000 Micro Field Attachable Connector Female 1 SSC200 User s Manual 1 Warranty Registration Card Only included in SSC200 01 If any of these items are missing or damaged please contact Maretron 2 2 Choosing a Mounting Location The selection of a suitable mounting location is important for the optimal performance of the Maretron SSC200 The mounting location and orientation of the Maretron SSC200 should be 1 Level with the Earth s Horizontal Plane Although the SSC200 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 Oriented with Arrow Pointing to Bow Parallel to Vessel Centerline Although the SSC200 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 SSC200 can be mounted in other orientations although this requires addition
5. To enable transmission of the HDG sentence at intervals of 100 ms PMARSETPX SSC200 00 100 3 To disable transmission of the HDM sentence PMARSETPX SSC200 01 0 4 To enable transmission of the HDM sentence at intervals of 1000 ms PMARSETPX SSC200 01 1000 5 To disable transmission of the HDT sentence PMARSETPX SSC200 02 0 6 To enable transmission of the HDT sentence at intervals of 100 ms PMARSETPX SSC200 02 100 7 To disable transmission of the ROT sentence PMARSETPX SSC200 03 0 8 To enable transmission of the ROT sentence at intervals of 100 ms PMARSETPX SSC200 03 100 9 To disable transmission of the PMAROUT sentence PMARSETPX SSC200 04 0 10 To enable transmission of the PMAROUT sentence at intervals of 1 sec PMARSETPX SSC200 04 1000 PMARSETP Maretron Proprietary Set Period Sentence NOTE This sentence is included for compatibility with older versions of SSC200 firmware The PMARSETPX sentence offers finer resolution and should be used if available 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 PMARSETP SSC200 A B hh lt CR gt lt LF gt Field A Identifier code identifies the sentence or parameter to be programmed see following table B Integer where 0 disables se
6. interface and manual entries PMAREXE SSC200 5D 3 lt CR gt lt LF gt This command causes the SSC200 to be set back to the factory default where variation data is used from either the NMEA 0183 interface or the NMEA 2000 interface PMAREXE SSC200 5E 2 damping period lt CR gt lt LF gt This command causes the SSC200 to use a rate of turn damping rate corresponding to the value programmed in damping period The damping period is programmable from 100 to 60000 which represents 100ms to 60 seconds PMAREXE SSC200 5E 11 lt CR gt lt LF gt This command causes the SSC200 to zero the rate of turn indication and record the compensation value used along with the current operating temperature of the compass The boat must remain at rest for a period of one minute after this command is issued PMAREXE SSC200 5E 12 lt CR gt lt LF gt This command causes the SSC200 to cancel any rate of turn zeroing operations currently in progress PMAREXE SSC200 5E 202 upside down setting front back setting lt CR gt lt LF gt This command informs the SSC200 that it in installed in an orientation other than usual right side up BOW arrow pointing towards the bow of the vessel Set the field upside down setting to a value of 1 to indicate that the SSC200 is installed right side up label on the top and to a value of 2 to indicate that the SSC200 is installed upside down Set the field front
7. 95 Serial Number xxxxxxx The SSC200 transmits this sentence once after it is powered up to indicate its serial number 96 Baud Rate 4800 The SSC200 transmits this sentence once after it is powered up to indicate its baud rate 97 SW Version 1 2 The SSC200 transmits this sentence once after it is powered up to indicate its software version 98 Model Version 1 0 The SSC200 transmits this sentence once after it is powered up to indicate its model version 99 Model ID SSC200 The SSC200 transmits this sentence once after it is powered up to indicate its model identification Page A2 Appendix A NMEA 0183 Interfacing Revision 1 9 Maretron SSC200 NMEA 0183 Received Sentences Note on NMEA 0183 Checksums For ease of manual configuration of the SSC200 via the NMEA 0183 Interface NMEA 0183 checksums are optional If no checksum is present in a received sentence then the sentence is treated as if a valid checksum were present 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 RMC Recommended Minimum Specific GNSS Data The SSC200 is capable of receiving the RMC sentence and extracting the magnetic variation data for subsequent insertion into the appropriate fields for trans
8. DAMAGES FOR LOSS OF USE LOSS OF ANTICIPATED PROFITS OR SAVINGS OR ANY OTHER LOSS INCURRED BECAUSE OF INTERRUPTION OF SERVICE INNO EVENT SHALL MARETRON S AGGREGATE LIABILITY EXCEED THE PURCHASE PRICE OF THE PRODUCT S INVOLVED MARETRON SHALL NOT BE SUBJECT TO ANY OTHER OBLIGATIONS OR LIABILITIES WHETHER ARISING OUT OF BREACH OF CONTRACT OR WARRANTY TORT INCLUDING NEGLIGENCE OR OTHER THEORIES OF LAW WITH RESPECT TO PRODUCTS SOLD OR SERVICES RENDERED BY MARETRON OR ANY UNDERTAKINGS ACTS OR OMISSIONS RELATING THERETO Maretron does not warrant that the functions contained in any software programs or products will meet purchaser s requirements or that the operation of the software programs or products will be uninterrupted or error free Purchaser assumes responsibility for the selection of the software programs or products to achieve the intended results and for the installation use and results obtained from said programs or products No specifications samples descriptions or illustrations provided Maretron to Purchaser whether directly in trade literature brochures or other documentation shall be construed as warranties of any kind and any failure to conform with such specifications samples descriptions or illustrations shall not constitute any breach of Maretron s limited warranty Warranty Return Procedure To apply for warranty claims contact Maretron or one of its dealers to describe the problem and determine the appropri
9. for the SSC200 Prerequisites The SSC200 compass must have firmware revision 1 7 or greater Instructions 1 Connect the SSC200 to the PC s serial port and obtain the cmd gt prompt per the instructions in Appendix C 2 Type the following sentence PMAREXE SSC200 DF Where is replaced by the two character identifier you wish the SSC200 to transmit for example to change to a heading of HE type the sentence PMAREXE SSC200 DF HE Note For compasses with firmware revision 1 8 or greater a NMEA 0183 checksum is optional For compasses with earlier firmware revisions a correct NMEA 0183 checksum is required 3 Type exit or simply power the SSC200 off and then on again You should now observe sentences being transmitted using the desired NMEA 0183 identifier Revision 1 9 Appendix F Changing the NMEA 0183 Identifier Page F1
10. looks for variation data coming from the NMEA 2000 interface The SSC200 accepts variation data from the Magnetic Variation PGN 127258 If the SSC200 does indeed receive variation information from the NMEA 2000 interface then it will do the following 1 Transmit the Heading Deviation amp Variation HDG sentence including the variation field as seen from the Magnetic Variation PGN 127258 from the NMEA 2000 interface if HDG is enabled see Appendix A for enabling or disabling NMEA 0183 sentences 2 Transmit the Heading True HDT sentence using variation data from the Magnetic Variation PGN 127258 from the NMEA 2000 interface if HDT is enabled see Appendix A for enabling or disabling NMEA 0183 sentences 4 3 Variation Input via Manual Entry If no other source of variation is available i e from either the NMEA 0183 or NMEA 2000 interface the SSC200 can be programmed with a fixed variation value for a given location this value can be found on most navigational charts If variation is manually entered into the SC200 then it will do the following 1 Transmit the Heading Deviation amp Variation HDG sentence including the variation field as manually entered over the NMEA 0183 interface if HDG is enabled see Appendix A for enabling or disabling NMEA 0183 sentences 2 Transmit the Heading True HDT sentence using variation data as manually entered over the NMEA 0183 interface if HDT is enabled see Appendix A for en
11. you see one of the following Maretron proprietary sentences a IITXT 01 01 02 Deviation Calibration Successfully Completed 17 lt CR gt lt LF gt This sentence indicates a successful calibration and you can jump to step number 6 b IITXT 01 01 03 Deviation Calibration Failed To Complete 43 lt CR gt lt LF gt This sentence indicates that the calibration failed return to step number 1 Turn the periodic transmissions back on by sending the following Maretron proprietary NMEA0183 sentence to the SSC200 PMAREXE SSC200 FD 1 lt CR gt lt LF gt Proceed to Installation Offset Correction SSC200 NMEA 0183 Installation Offset Correction Installation offset correction can be performed by sending a Maretron proprietary NMEA 0183 sentence to the SSC200 The procedure is as follows 1 2 Make sure the vessel is laying in flat water on a known heading Send the following Maretron proprietary NMEA 0183 sentence to the SSC200 PMAREXE SSC200 24 known heading in tenths of degrees lt CR gt lt LF gt Where known heading in tenths of degrees is expressed in 10 of degrees i e 121 7 would be programmed as 1217 Sending this Maretron proprietary NMEA 0183 sentence to the SSC200 causes the heading roll and pitch offsets to be written to permanent memory Page A6 Appendix A NMEA 0183 Interfacing Revision 1 9 Maretron Appendix B NMEA 2000 Interfacing SSC200 NMEA 2000 Periodic Data Transmitted PGNs PGN 1
12. 00 senses an invalid movement it will issue this message and restart deviation calibration as long as it has not failed five times SSC200 NMEA 2000 Received PGNs PGN 126208 NMEA Command Group Function Maretron Proprietary Reset This will initiate a reset and force the SSC200 to start the calibration process Field 1 2 o 10 Complex Command Group Function Code 8 bits set this field s value to 0x01 which denotes a command PGN Commanded PGN 24 bits set this field s value to 126720 which denotes the Maretron proprietary PGN Priority Setting 4 bits set this field s value to 0x8 which indicates to leave priority settings unchanged Reserved 4 bits set this field s value to OxF which is the value for a reserved field of this size Number of Pairs of Commanded Parameters to Follow 8 bits set this field s value to 0x4 indicating that four parameters will follow Number of First Commanded Parameter 8 bits set this field s value to 0x1 Maretron Vendor ID and Industry Code 16 bits set this field s value to 0x9889 Number of Second Commanded Parameter 8 bits set this field s value to 0x02 Product Code 16 bits set this field s value to 0x1B2 which is the NMEA 2000 product code for the SSC200 Number of Third Commanded Parameter 8 bits set this field s value to 0x03 Software Code 16 bits set this field s valu
13. 27250 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 Ox7FFF data not available Since the SSC200 s core technology is based on magnetometers the Heading Sensor Reference field 5 is always set to magnetic Field 1 SID The sequence identifier field is used to tie related PGNs together For example the SSC200 will transmit identical SIDs for Vessel Heading PGN 127250 Attitude 127257 and Rate of Turn 127251 to indicate that the readings are linked together i e the data from each PGN was taken at the same time although they are reported at slightly different times 2 Heading Sensor Reading This field is used to report the vessel s heading and includes deviation assuming a deviation table has been successfully loaded through the magnetic deviation calibration process 3 Deviation The deviation is included in field 2 therefore this field always reads as 0 4 Variation The SSC200 does not use this field so the field is transmitted with the value 0x7FFF data not available See PGN 127258 for information regarding the SSC200 and its ability to transmit magnetic variation 5 Heading Sensor Reference The SSC200 transmits a 1 in this field to indicate that the heading is
14. E A E E E EE EE E 15 5 1 Rate of Turn Damping Period Selection with Maretron Display ceeee 16 5 2 Rate of Turn Damping Period Selection by NMEA 0183 Interface ccee 16 Bad rate OF FUP ZG KOU ordea a a a ant Eaa a aaa parE Eaa 16 6 Maintenance nmnnnonnnan nea a a S 16 7 a Troubleshooting s aain a eai ia aa aa a la ttt lc 17 8 Technical SpecificatoN Sise rninni E i ies en nha AA 18 9 WECMMICAL SUPP O M ea eea a ate e Ae oe AE aa A uae ade aT tude Caeetads cotiaues vane 19 10 instalation Template s s ismeri en een erie aaan arae aa aaa araa aeeawas 20 11 Maretron 2 Year Limited Warranty cceeeeeeeceeneeeeeeeeeeeeeeeeeaeeeeeeeeeeeeeeeeenaaeeeeeeeeeeeeeee 21 Page iv Revision 1 9 Maretron Table of Figures Figure 1 Mounting the SSC200 to a Horizontal Surface c Figure 2 Mounting the SSC200 to Vertical Surface eeeeeeeees Figure 3 NMEA 2000 NMEA 0183 Interface Connector Locations Figure 4 NMEA 2000 Power Connector Face Views cccccceeeeseeeees Figure 5 SSC200 with NMEA 2000 Connection Only c cceceeeeeeeees Figure 6 NMEA 0183 Connector Face VieWS ceeeeeeeeeeeeeeeeeeees Figure 7 NMEA 0183 Cable Wire Color Coding ccccceeeeeeeeeeeeteees Figure 8 SSC200 with NMEA 0183 Connection Only eeeeeeeeees Figure 9 Trouble Shooting GUNG isessiesisececnntcerecanedanexe
15. IIROT A B hh lt CR gt lt LF gt Field A Rate of turn in degrees minute where indicates the bow turning to port 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 PMAROUT A B C D E F G H l hh lt CR gt lt LF gt Field A Always reads ATT to indicate following data is associated with the vessel s attitude B Pitch angle in tenths of degrees where indicates bow pitches downward C Roll angle in tenths of degrees where indicates roll to the port Revision 1 9 Appendix A NMEA 0183 Interfacing Page A1 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 lt CR gt lt LF gt Field A Always reads 01 B Always reads 01 C Message identifier see following table D Text string see following table EE Text String Description 01 Deviation Calibration This message is transmitted at the beginning of the magnetic deviation Started calibration process 02 Deviation Calibration This message is transmitted upon successful completion of t
16. Maretron SSC200 Solid State Rate Gyro Compass User s Manual Revision 1 9 Copyright 2015 Maretron LLP All Rights Reserved Maretron LLP 9014 N 23 4 Ave 10 Phoenix AZ 85021 7850 http www maretron com Maretron Manual Part M000401 Revision 1 9 Page i SSC200 User s Manual Revision History Revision Description 1 0 Original document 1 1 Minor editorial changes Corrected default rate for Rate of Turn PGN under Technical Specifications 1 2 Minor editorial changes Removed Warranty Card 1 3 Changed copyright to 2005 Added text to describe new feature programmable variation under Section 1 2 3 0 3 3 and Appendix B 1 4 Added Variation section Added Rate of Turn section 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 Added Calibration Warning 1 5 Added Firmware Revision section indicating firmware revision 1 9 Added note to Appendix A that checksums are optional and removed checksums from received sentences Added deviation compass environment quality measurements report from compass Added rate of turn zeroing section 1 6 Updated Supported Firmware Revision to 2 0 Incorporated instructions on interfacing directly to a
17. PC as Appendix C Incorporated Magnetic Variation App Note AN2 as Appendix D Incorporated HDT App Note AN1 as Appendix E Added support for 38400 baud rate for P N M000021 compasses 1 7 Updated Section 3 1 2 describing compass output after successful deviation Updated installation to include power connections through NMEA 2000 port Updated installation SSC200 can be installed upside down and or backward 1 8 Corrected order of parameters in P gt MAREXE ATT sentence description Added cautions about using red Loctite and acetone cleaners Updated Unpacking the Box items list Added Appendix F on changing the NMEA0183 identifier Clarified usage of PMARSETPX vs PMARSETP sentences Added NMEA0183 sentence to cause SSC 200 to retransmit last calibration status message Editorial note in NMEA 0183 connections about consulting manufacturer of connected products for connection information Added length of NMEA 0183 cable 10m Page ii Revision 1 9 Maretron Revision 1 9 Description Added documentation on NMEA 0183 Installation Orientation command to Appendix A Added text saying rate of turn zeroing should be carried out before magnetic deviation calibration Revision 1 9 Page iii SSC200 User s Manual Table of Contents 1 Coe a a a teas taaaentecaeteadeantansentenstaten 1 OOd 1 o aar a A E MER CHEK emCn CHEK nEn 1 12 RINMWARCVGVISION 2acscnvecrentcdiecd cdi tediscdu
18. Section 5 1 2 Through the NMEA 0183 Interface Section 5 2 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 5 2 Rate of Turn Damping Period Selection by NMEA 0183 Interface You can program the SSC200 to use a particular rate of turn damping period through the NMEA 0183 interface Refer to Appendix A for details on programming the SSC200 to use a specific damping period 5 3 Rate of Turn Zeroing The SSC200 may be used as a rate of turn indicator which should read zero when the vessel is not turning It is possible that the rate of turn indication has an offset that is it may show a non zero value when the vessel is at rest This offset changes with temperature but the SSC200 has the ability to remember the offset at different temperatures You teach the SSC200 by using Rate of Turn Zeroing It is possible to do Rate of Turn Zeroing using a Maretron display product such as the DSM200 please refer to the display product user s manual for details 6 Maintenance Regular maintenance is important to ensure continued proper operation of the Maretron SSC200 Perform the following tasks periodically e Clean the unit with a soft cloth Do not use chemical cleaners as they ma
19. Transmission N A Received RMC Recommended Minimum Specific GNSS Data N A Sentences VTG Course Over Ground and Ground Speed N A Page 18 Revision 1 9 Maretron Electrical Parameter Value Comment Operating Voltage 9 to 16 Volts DC Voltage Power Consumption lt 150mA Average Current Drain Load Equivalence Number LEN 3 NMEA 2000 Spec 1LEN 50 mA Reverse Battery Protection Yes Indefinetely Load Dump Protection Yes Energy Rated per SAE J1113 Mechanical Parameter Value Comment Size 4 46 x 3 23 x 2 14 Including Mounting Flanges Weight 7 OZ Mounting Deck or Bulkhead Environmental Parameter Value IEC 60954 Classification Exposed Degree of Protection IP67 Operating Temperature 25 C to 55 C Storage Temperature 40 C to 70 C Relative Humidity 93 RH 40 per IEC60945 8 2 Vibration 2 13 2Hz 1mm 13 2 100Hz 7m s2 per IEC 60945 8 7 Rain and Spray 12 5mm Nozzle 100liters min from 3m for 30min per IEC 60945 8 8 Solar Radiation Ultraviolet B A Visible and Infrared per IEC 60945 8 10 Corrosion Salt Mist 4 times 7days 40 C 95 RH after 2 hour Salt Spray Per IEC 60945 8 12 Electromagnet Emission Conducted and Radiated Emission per IEC 60945 9 Electromagnetic Immunity Conducted Radiated Supply and ESD per IEC 60945 10 Safety Precautions Dangerous Voltage Elect
20. abling or disabling NMEA 0183 sentences Page 14 Revision 1 9 Maretron 3 Transmit over the NMEA 2000 interface the Magnetic Variation PGN 127258 with the Variation Source field value corresponding to the manually entered variation The PGN s Variation Source field will be transmitted with the lowest possible quality indicator which is Manual Entry WARNING Magnetic variation changes as your position on the earth changes therefore the variation should be adjusted with changes in position The SSC200 will not automatically adjust variation with changes in position it is the responsibility of the user to adjust variation with changes in position 4 4 Variation Source Selection As shipped from the factory the SSC200 automatically looks for variation from both the NMEA 0183 and NMEA 2000 interfaces If there is only a single source of variation available either from the NMEA 0183 or the NMEA 2000 interface then there is no need to manually select a variation source However if there are multiple variation sources i e variation available from both the NMEA 0183 and NMEA 2000 interfaces or there is no source for variation i e variation is not available from either the NMEA 0183 or the NMEA 2000 interfaces then it is necessary to select a particular variation source The SSC200 can be programmed to specifically use one of three possible variation sources 1 Variation from Only NMEA 0183 Interface 2 Variati
21. al configuration steps please refer to Section 2 3 on page 3 for details 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 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 SSC200 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 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 Page 2 Revision 1 9 Maretron 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
22. and a cmd gt prompt will appear Revision 1 9 Appendix C Connecting to a PC Via NMEA 0183 Page C1 SSC200 User s Manual This page intentionally left blank Page C2 Appendix C Connecting to a PC Via NMEA 0183 Revision 1 9 Maretron 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 The SSC200 compass must have firmware revision 1 7 or greater The SSC200 compass must either transmit the default HDG sentence or be configured to transmit the HDT sentence see Application Note 1 Configuring the SSC200 to Transmit the HDT Sentence for Satellite Antennas and Radars Instructions There are two choices for a magnetic variation source for the SSC200 GPS preferred or manual GPS Variation In order to use a GPS to enable the SSC200 compass to transmit true heading data the GPS antenna must transmit magnetic variation data Not all GPS antennas transmit magnetic variation data Please consult the GPS antenna user s manual for details 1 2 4 Ensure that the GPS antenna is configured to transmit either the RMC or VTG sentence Either sentence should work equally well Connect the NMEA 0183 output of the GPS antenna to the NMEA 0183 in
23. arted deviation calibration process 02 Deviation Calibration This message is transmitted upon successful completion of the Completed Successfully magnetic deviation calibration process i e a new deviation table has been stored in permanent memory 03 Deviation Calibration The SSC200 attempts to perform calibration 5 times before Failed to Complete giving up and issuing this sentence Each time the SSC200 encounters an error See message identifiers 04 05 and 06 it restarts the calibration process Upon the 5 error the SSC200 exits the calibration routine and it must be restarted before it will once again try to perform deviation calibration 04 Deviation Calibration During calibration the vessel must not turn to fast where the Turning Too Fast SSC200 is unable to reliably develop deviation data If the SSC200 senses the vessel turning to quickly it will issue this message and restart deviation calibration as long as it has not failed five times 05 Deviation Calibration During calibration the vessel must not turn to slowly where the Turning Too Slow SSC200 is unable to reliably develop deviation data If the SSC200 senses the vessel turning to slowly it will issue this message and restart deviation calibration as long as it has not failed five times 06 Deviation Calibration During calibration the vessel must not jerk or reverse directions Invalid Movement where the SSC200 is unable to reliably develop deviation data If the SSC2
24. ate course of action If a return is necessary place the product in its original packaging together with proof of purchase and send to an Authorized Maretron Service Location You are responsible for all shipping and insurance charges Maretron will return the replaced or repaired product with all shipping and handling prepaid except for requests requiring expedited shipping i e overnight shipments Failure to follow this warranty return procedure could result in the product s warranty becoming null and void Maretron reserves the right to modify or replace at its sole discretion without prior notification the warranty listed above To obtain a copy of the then current warranty policy please go to the following web page http Awww maretron com company warranty php Revision 1 9 Page 21 SSC200 User s Manual This page intentionally left blank Page 22 Revision 1 9 Maretron Appendix A NMEA 0183 Interfacing SSC200 NMEA 0183 Transmitted Sentences HDG Heading Deviation amp Variation The SSC200 indicates heading 10 times a second The deviation field always contains zero as the SSC200 reports it s heading with the deviation included The variation field will normally contain the null character however if the SSC200 receives either a valid RMC or VTG sentence then the SSC200 will fill the variation field appropriately IIHDG A B C D E hh lt CR gt lt LF gt Field A Magnetic heading sensor including deviation in te
25. back setting to a value of 1 to indicate that the SC200 is installed with the arrow labeled BOW on the label pointing towards the bow of the vessel and to a value of 2 to indicate that the SSC 200 is installed with the arrow labeled BOW pointing towards the stern of the vessel PMAREXE SSC200 50 lt CR gt lt LF gt 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 PMARSETPX SSC200 A B hh lt CR gt lt LF gt Field A Identifier code identifies the sentence or parameter to be programmed see following table B Integer where 0 disables sentence and positive numbers are multipliers of 1ms i e programmed integer of 200 would mean a 200ms transmission interval Identifier Code Sentence Default Rate 00 HDG 100 100ms 01 HDM 0 or Disabled 02 HDT 0 or Disabled 03 ROT 200 or 200ms 04 PMAROUT 1000 or 1sec OA Variation Lifetime 5000 or 5sec Page A4 Appendix A NMEA 0183 Interfacing Revision 1 9 Maretron Some example sentences are shown below 1 To disable transmission of the HDG sentence PMARSETPX SSC200 00 0 2
26. be done using a Maretron display product e g DSM200 please refer to the DSM200 user s manual for details Revision 1 9 Page 3 SSC200 User s Manual Figure 1 Mounting the SSC200 to a Horizontal Surface 2 3 2 Mounting the SSC200 to a Vertical Surface Mounting the SSC200 compass to a vertical surface requires that the provided mounting brackets be fastened to the side of the SSC200 using the provided brass flat head screws Once the mounting brackets are securely fastened to the side of the SSC200 attach the SSC200 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 usual way of mounting the SSC200 to a vertical surface is attaching the SSC200 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 SSC200 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 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 4 Revision 1 9 Maretron Figure 2
27. c variation source when more than one variation source is available Revision 1 9 Page 13 SSC200 User s Manual 4 1 Variation Input via NMEA 0183 Interface As shipped from the factory the SSC200 automatically looks for variation data coming from the NMEA 0183 interface The SSC200 accepts variation data from the Recommended Minimum Specific GNSS Data RMC sentence or the SSC200 computes variation from the Course Over Ground and Ground Speed VTG sentence If the SSC200 does indeed receive variation information from the NMEA 0183 interface then it will do the following 1 Transmit the Heading Deviation amp 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 Transmit the Heading True HDT sentence using variation data from the RMC or VTG sentence over the NMEA 0183 interface if HDT is enabled see Appendix A for enabling or disabling NMEA 0183 sentences 3 Transmit over the NMEA 2000 interface the Magnetic Variation PGN 127258 with the Variation Source field value corresponding to the received NMEA 0183 variation data from the RMC or VTG sentence The PGN s Variation Source field will be transmitted with the lowest possible quality indicator which is Manual Entry 4 2 Variation Input via the NMEA 2000 Interface As shipped from the factory the SSC200 automatically
28. cdibieiedissdiicdibiescdrcsducdieceus AAA 1 Woe Fea cccce eaten ek che Meh eA eh Le AA AA ee Ae At eh eae hues 1 T4 Quek IAS balls A EAEE 1 2 lacie elie eee mre enter Menten eT mec mC mnnC Rn mC mC menC mn nenC eT mmc nna Te nT ann erent 2 2A Unpacking the BOX fase cen ichten idtedt cate deed an aai iaai a aaide 2 2 2 Choosing a Mounting LOCalOnN nuwexancssa een anak aids 2 23 MOUnUING THE SSC200 ra l tah cece a e a a aae Aaaa AEn 3 2 3 1 Mounting the SSC200 to a Horizontal Surface cccccccccecceeeeceeeeeeeeees 3 2 3 2 Mounting the SSC200 to a Vertical Surface ccccccccccccececeeeeeeeeeeeeeeeeees 4 2 4 Connecting the SSC200 a 2 acc chseceadencendecnadaedhandedadecndeenssandede de cncednadcndedasccede dnccendedmanand 5 2 4 1 Connecting to NMEA 2000 Interface cccccccsecseccseeeseeeseeeseeeseeeseeeeees 6 2 4 2 Connecting to NMEA 0183 Interface eeceeeeececeeeeeeeeeeeeeeeeeeeeeeeeeeeeenees 7 If the NMEA 2000 interface is connected power is supplied to the SSC200 through the NMEA 2000 network CONNECTION cccccccecesscssecsecseessseeesseeaeens 8 2 4 3 Connecting Both NMEA 2000 and NMEA 0183 Interfaces 00 10 2 4 4 Checking GOMMOCU GING sounds cada a etn ned vlan det eden cede tae tnt dete nearest 10 3 Calibrations ernea e Medi Cor e ae AEN nk SE Peau Siiud cok ShOLL mak peu Leh Mtn Deck Siiad coLMtoLs neu Dtous eo bioasent 10 3 1 Rate of Turn Zero Offset Calibration
29. e initial compass installation and again at any time that the magnetic environment of the vessel has changed significantly for example new cables have been routed near the compass or new equipment made of ferrous metal has been installed near the compass WARNING It is imperative that calibration procedures be carried out upon installation of the SSC200 to ensure accurate readings 3 1 Rate of Turn Zero Offset Calibration Since the SSC200 uses the internal rate of turn gyros during the magnetic deviation calibration process the rate of turn gyros need to zeroed first It is possible to do Rate of Turn Zeroing using a Maretron display product such as the DSM150 DSM250 or N2KAnalyzer software please refer to the display product user s manual for details 3 2 Magnetic Deviation Calibration Magnetic and or ferrous items near a magnetic compass such as the SSC200 can cause errors in the compass heading output 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 Maretron Display Product Initiated Section 3 2 1 Automatically at Power Up Section 3 2 2 Through the NMEA 0183 Interface Appendix A Through the NMEA 2000 Interface Appendix B A OMD Page 10 Revision 1 9 Mare
30. e to 0x0001 which is the identifier for this version of the Maretron proprietary protocol Revision 1 9 Appendix B NMEA 2000 Interfacing Page B3 SSC200 User s Manual 12 Maretron Command set this field s value to OxFO which will initiate a reset and start the calibration process PGN 126208 NMEA Command Group Function Maretron Proprietary Installation Offset This PGN performs the installation offset of the compass It sets the roll and pitch outputs to zero at the compass current orientation and sets the heading reading for the current orientation to the value given by the PGN see page B3 for complete description of PGN 126270 Field 1 2 3 Complex Command Group Function Code 8 bits set this field s value to 0x01 which denotes a command PGN Commanded PGN 24 bits set this field s value to 126720 decimal 0x1EF00 hexadecimal which denotes the Maretron proprietary PGN Priority Setting 4 bits set this field s value to 0x8 which indicates to leave priority settings unchanged Reserved 4 bits set this field s value to OxF which is the value for a reserved field of this size Number of Pairs of Commanded Parameters to Follow 8 bits set this field s value to 0x4 indicating that four parameters will follow Number of First Commanded Parameter 8 bits set this field s value to 0x1 Maretron Vendor ID and Industry Code 16 bits set this fie
31. ed 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 Maretron assumes no liability whatsoever for expenses of removing any defective product or part or for installing the repaired product or part or a replacement therefore or for any loss or damage to equipment in connection with which Maretron s products or parts shall be used With respect to products not manufactured by Maretron Maretron s warranty obligation shall in all respects conform to and be limited to the warranty actually extended to Maretron by its supplier The foregoing warranties shall not apply with respect to products subjected to negligence misuse misapplication accident damages by circumstances beyond Maretron s control to improper installation operation maintenance or storage or to other than normal use or service THE FOREGOING WARRANTIES ARE EXPRESSLY IN LIEU OF AND EXCLUDES ALL OTHER EXPRESS OR IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE Statements made by any person including representatives of Maretron which are inconsistent or in conflict with the terms of this Limited Warranty shall not be binding upon Maretron unless reduced to writing and approved by an officer of Maretron IN NO CASE WILL MARETRON BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES
32. field always contains a value of Ox7FFF data not available Pitch This field is used to report the vessel s pitch Roll This field is used to report the vessel s roll Reserved This field is reserved by NMEA therefore the SSC200 sets all bits to a logic 1 o1 BR OW P PGN 127258 Magnetic Variation The SSC200 may or may not periodically transmit this PGN depending on whether or not it has been programmed with the local magnetic variation Programming the magnetic variation through a Maretron display product like the DSM200 will cause the SSC200 to transmit this PGN once per second If the local magnetic variation is not known then the variation can be disabled again through a display product like the DSM200 at which time the SSC 200 will cease to transmit this PGN Field 1 SID The sequence identifier field is used to tie related PGNs together For example the SSC200 will transmit identical SIDs for Vessel Heading PGN 127250 Attitude 127257 and Rate of Turn 127251 to indicate that the readings are linked together i e the data from each PGN was taken at the same time although they are reported at slightly different times Variation Source This field always contains a value of 0x00 manual entry Reserved This field is reserved by NMEA therefore the SSC200 sets all bits to a logic 1 4 Age of Service This field always contains a value of Ox7FFF data not available 5 Varia
33. h as status sentences during deviation calibration PMAREXE SSC200 FD 1 lt CR gt lt LF gt This command causes the SSC200 to once again output periodic data Normally periodic data is disabled during the calibration process such that status messages are easy to see and not lost within normal periodic data This sentence is used to turn the periodic data back on PMAREXE SSC200 24 known heading in tenths of degrees lt CR gt lt LF gt This is the command used to perform installation offset where the compass is aligned to a known heading and the pitch and roll are zeroed to the vesse ls current attitude If the current or known heading is 177 0 then a value of 1770 should be programmed PMAREXE SSC200 5D 0 variation lt CR gt lt LF gt This command causes the SSC200 to use a manual entry for variation variation is programmed using 1 10 of a degree resolution as an example use 2 3 in the variation field for a 2 3 variation PMAREXE SSC200 5D 1 lt CR gt lt LF gt This command causes the SSC200 to use variation data from the NMEA 2000 interface and ignore all other variation sources i e NMEA 0183 interface and manual entries Revision 1 9 Appendix A NMEA 0183 Interfacing Page A3 SSC200 User s Manual PMAREXE SSC200 5D 2 lt CR gt lt LF gt This command causes the SSC200 to use variation data from the NMEA 0183 interface and ignore all other variation sources i e NMEA 2000
34. he magnetic Completed Successfully deviation calibration process i e a new deviation table has been stored in permanent memory 03 Deviation Calibration The SSC200 attempts to perform calibration 5 times before giving up and Failed to Complete issuing this sentence Each time the SSC200 encounters an error see message identifiers 04 05 and 06 it restarts the calibration process Upon the 5 error the SSC200 exits the calibration routine and it must be restarted before it will once again try to perform deviation calibration 04 Deviation Calibration During calibration the vessel must not turn to fast where the SSC200 is Turning Too Fast unable to reliably develop deviation data If the SSC200 senses the vessel turning to quickly it will issue this message and restart deviation calibration as long as it has not failed five times 05 Deviation Calibration During calibration the vessel must not turn to slowly where the SSC200 Turning Too Slow is unable to reliably develop deviation data If the SSC200 senses the vessel turning to slowly it will issue this message and restart deviation calibration as long as it has not failed five times 06 Deviation Calibration During calibration the vessel must not jerk or reverse directions where Invalid Movement the SSC200 is unable to reliably develop deviation data If the SSC200 senses an invalid movement it will issue this message and restart deviation calibration as long as it has not failed five times
35. ice to the SSC200 The individual wires found within the cable have the following color coding Wire Color Name Description Gray TXA Transmit Differential Output A Signal Brown TXB Transmit Differential Output B Signal Blue RXA Receive Differential Input A Signal White RXB Receive Differential Input B Signal Figure 7 NMEA 0183 Cable Wire Color Coding 2 4 2 1Power Connections If the NMEA 2000 interface is connected power is supplied to the SSC200 through the NMEA 2000 network connection If only the NMEA 0183 interface is used power connections must be made via the NMEA 2000 Power connector Using the included Micro Field Attachable Connector Female connect two power wires not included to pins 2 and 3 of the field attachable connector only the two power pins need be connected as shown in Figure 4 on page 6 assemble the connector per the instructions packaged with the connector and screw the connector snugly into the NMEA 2000 Power connector on the SSC200 as shown in Figure 8 below Page 8 Revision 1 9 Maretron Field Attachable Connector gt NMEA 0183 Connection 12V Ground Power Connection Figure 8 SSC200 with NMEA 0183 Connection Only 2 4 2 2Supported 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 b
36. is allows you to compare different installation points on a vessel to determine the optimum location for the SC200 Revision 1 9 Page 11 SSC200 User s Manual 3 2 2 Automatic Power Up Deviation Calibration Automatic power up deviation calibration is accomplished by turning the vessel through four complete circles within 10 minutes of power up The procedure is as follows 1 Ensure that the compass has been properly installed per Section 2 2 Warm up the compass by operating it for approximately 10 minutes 3 Turn the vessel either direction such that you complete a full 360 turn in 2 2 minutes or less try not to go below 1 minute for a complete circle 4 While continuing to turn the vessel as indicated in step 3 remove the power from the compass and reapply power this initiates deviation calibration 5 Continue turning the vessel through four complete circles in less than 10 minutes from the time power was applied 6 Successful deviation is indicated when the SSC200 outputs the following sequence a 0 Degrees for two seconds followed by b 90 degrees for two seconds followed by c 180 degrees for two seconds followed by d 270 degrees for two seconds followed by the actual heading While turning the vessel try to maintain a circle by holding the rudder at a constant angle In addition try to minimize the vessel s pitch and roll by calibrating on calm flat water 3 3 Installation Offset Correction After installati
37. ither a true heading a direction relative to the geographic poles or it is displayed as a magnetic heading a direction relative to the lines of magnetic flux North seeking gyrocompasses are capable of measuring direction relative to the geographic poles true whereas magnetic compasses measure direction relative to the earth s local magnetic flux magnetic The SSC200 is a magnetic compass therefore it requires an external source for variation if you want to view your heading in true format The SSC200 is capable of receiving variation in one of three ways 1 via the NMEA 0183 interface 2 via the NMEA 2000 interface or 3 through manual variation entry Normally the SSC200 will automatically use variation from either the NMEA 0183 interface or the NMEA 2000 interface however you can force the SSC200 to use variation from only the NMEA 0183 interface or you can force the SSC200 to use variation from only the NMEA 2000 interface or you can force SSC200 to only use manually entered variation WARNING Multiple variation sources that are received by the SSC2000 i e NMEA 0183 and NMEA 2000 interfaces will cause confusion as to the correct source to be used for true heading indications If more than one variation source is available then the SSC200 needs to be programmed to use the appropriate source for reporting subsequent true heading information See Section 4 4 for details on choosing a specifi
38. ition cables or magnetic or ferrous objects have been moved near the SSC200 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 Opening the SSC200 will expose the sensitive electronic components to movement and adverse environmental conditions that may render the compass inoperative Please do not open the SSC200 as this will automatically void the warranty If service is required please return the unit to an authorized Maretron service location Revision 1 9 Page 17 SSC200 User s Manual 8 Technical Specifications Specifications Parameter Value Comment Static Heading Accuracy lt 1 rms 45 Pitch and Roll 15 C to 35 C Heading Display Resolution 0 1 With Maretron Display Settling Time 1 Second To Static Accuracy after 35 Second Turn Heading Deviation Yes Automatic or Initiated through Interfaces Alignment Calibration Yes Manual or Initiated through Interfaces Pitch and Roll Range 80 Pitch and Roll Accuracy lt 1 45 Pitch and Roll 15 C to 35 C Pitch and Roll Display Resolution 0 1 With Maretron Display Pitch and Roll to Boat Alignment Yes Manual or Initiated through Interfaces Rate of Tu
39. lave Response Deviation Calibration Successfully Completed This indicates successful completion of the deviation calibration process see page B2 for complete description of PGN 126270 b PGN 126270 Maretron Proprietary Slave Response Deviation Calibration Failed to Complete This indicates a failure of the deviation calibration process see page B2 for complete description of PGN 126270 SSC200 NMEA 2000 Installation Offset Correction Installation offset correction can be performed by sending a Maretron proprietary NMEA 2000 PGN to the SSC200 The procedure is as follows 1 Make sure the vessel is laying in flat water on a known heading 2 Send the following NMEA 2000 PGN to the SSC200 a PGN 126208 NMEA Command Group Function Maretron Proprietary Installation Offset This PGN performs the installation offset of the compass It sets the roll and pitch outputs to zero at the compass current orientation and sets the heading reading for the current orientation to the value given by the PGN see page B2 for a complete description of PGN 126270 Revision 1 9 Appendix B NMEA 2000 Interfacing Page B5 SSC200 User s Manual This page intentionally left blank Page B6 Appendix B NMEA 2000 Interfacing Revision 1 9 Maretron Appendix C Connecting to a PC Via NMEA 0183 In order to perform configuration of the SSC200 over the NMEA 0183 interface it is preferable that the connection be made by a RS 232 t
40. ld to 0x9889 which is a combination of Maretron s vendor ID and the marine industry code Number of Second Commanded Parameter 8 bits set this field s value to 0x02 Product Code 16 bits set this field s value to 0x1B2 which is the NMEA 2000 product code for the SSC200 Number of Third Commanded Parameter 8 bits set this field s value to 0x03 Software Code 16 bits set this field s value to 0x0001 which is the identifier for this version of the Maretron proprietary protocol Maretron Command 8 bits set this field s value to 0x24 which will cause installation offset calibration to be performed Heading Value 16 bits set this field s value to the current known heading in tenths of degrees a value between 0 and 3599 For example 121 7 would be programmed as 1217 decimal or 0x4C1 hexadecimal PGN 126208 NMEA Request Group Function Transmission Periodic Rate This PGN will enable or disable the periodic transmission of specific PGNs Field 1 2 3 Complex Command Group Function Code 8 bits set this field s value to 0x00 which denotes a request PGN Requested PGN 24 bits set this field s value to the corresponding PGN for which you wish to change the periodic rate Transmission Interval 32 bits set this field s value to 0x0 to disable the periodic transmission of the PGN identified in field 2 above Otherwise program in the defaul
41. mission of the HDG and HDT sentences The SSC200 uses an aging technique referred to as Variation Lifetime where variation data is output in the HDG and HDT sentences for a period of 5 seconds after the RMC sentence is received The Variation Lifetime can be re programmed to a shorter or longer period see PMARSETP sentence VTG Course Over Ground and Ground Speed The SSC200 is capable of receiving the VTG sentence and computing the magnetic variation data for subsequent insertion into the appropriate fields for transmission of the HDG and HDT sentences The variation is computed by observing the difference between the true course over ground and the magnetic course over ground The SSC200 uses an aging technique referred to as Variation Lifetime where variation data is output in the HDG and HDT sentences for a period of 5 seconds after the VTG sentence is received The Variation Lifetime can be re programmed to a shorter or longer time period see PMARSETP sentence PMAREXE Maretron Proprietary Execute Sentence The SSC200 can be commanded via this proprietary sentence to execute one of several commands PMAREXE SSC200 FO lt CR gt lt LF gt This command causes the SSC200 to be reset and is useful for initiating deviation calibration PMAREXE SSC200 FD 0 lt CR gt lt LF gt This command causes the SSC200 to stop outputting normal periodic data like heading and is useful for observing non periodic sentences suc
42. ntence and positive numbers are multipliers of 1ms i e programmed integer of 2 would mean a 200ms transmission interval Identifier Code Sentence Default Rate 00 HDG 1 or 100ms 01 HDM 0 or Disabled 02 HDT 0 or Disabled 03 ROT 2 or 200ms 04 PMAROUT 10 or 1sec OA Variation Lifetime 50 or 5sec 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 Warm up the compass by operating it for approximately 10 minutes Revision 1 9 Appendix A NMEA 0183 Interfacing Page A5 SSC200 User s Manual 6 7 Turn the vessel either direction such that you complete a full 360 turn in 2 2 minutes or less try not to go below 1 minute for a complete circle Send the following Maretron proprietary NMEA0183 sentence to the SSC200 while continuing to turn the vessel a PMAREXE SSC200 FD 0 lt CR gt lt LF gt This will turn off all periodic transmissions such that you can easily see status messages associated with the calibration process b PMAREXE SSC200 F0 lt CR gt lt LF gt This will initiate a reset and force the SSC200 to start the calibration process Continue turning the vessel through at least 3 circles until
43. nths of degrees Deviation always reads 0 0 because it is included in field A Although this field reads as E it is meaningless as the deviation is always zero Null unless receiving variation data form RMC or VTG sentence in which case variation data Null unless receiving variation data from RMC or VTG sentence in which case E or W depending on direction of variation m0 HDM Heading Magnetic The SSC200 does not normally transmit this sentence because it is no longer recommended for new designs by NMEA However this sentence can be enabled or turned on via a proprietary NMEA 0183 sentence see PMARSETP definition IIHDM A B hh lt CR gt lt LF gt Field A Magnetic heading sensor including deviation in tenths of degrees B This field always contains an M indicating magnetic heading HDT Heading True The SSC200 does not normally transmit this sentence However this sentence can be enabled or turned on via a proprietary NMEA 0183 sentence see PMARSETP definition The HDT sentence works in collaboration with the reception of an RMC or VTG sentence to produce true heading IIHDT A B hh lt CR gt lt LF gt Field A Null unless receiving variation from RMC and VTG in which case magnetic heading including deviation and variation in tenths of degrees B This field always contains a T indicating true magnetic heading ROT Rate of Turn The SSC200 indicates the vessel s rate of turn 5 times a second
44. o RS 422 level converter In the case that a level converter is not available the following method can be attempted 1 Connect the SSC200 to the PC s serial port Please note that the SSC200 uses RS 422 signal levels while PC serial ports operate with RS 232 signal levels If you do not have a RS 232 to RS 422 level converter some people have reported success connecting directly to a RS 232 serial port using the following connections a Connect TXB brown and RXB white together and to the System Ground pin GND pin 5 of the RS 232 port b Connect TXA gray to the Receive Data pin RXD pin 2 of the RS 232 port c Connect RXA blue to the Transmit Data pin TXD pin 3 of the RS 232 port 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 2 Connect power to the compass a Connect 9 16 VDC to V red b Connect system ground to V black 3 Start Hyperterm and connect it to the port to which the SSC200 is connected 4800 or 38400 bps depending on the baudrate the compass is set to 8 data bits no parity 1 stop bit You should now see compass data in the form of NUEA0183 sentences on the Hyperterm screen 4 Type shell The NMEA0183 sentences will stop
45. on and successful deviation calibration it is important to perform installation offset correction so that the displayed compass heading pitch and roll match the actual vessel heading pitch and roll Installation offset correction is done using one of four possible procedures 1 Maretron Display Product Initiated Section 3 3 1 2 Manual Installation Offset Correction Section 3 3 2 3 Through the NMEA 0183 Interface Appendix A 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 and 2 users with direct access to the NMEA 0183 and NMEA 2000 interfaces can perform installation offset correction through the NMEA 0183 interface see Appendix A or the NMEA 2000 interface see Appendix B 3 3 1 Maretron Display Product Offset Correction Installation offset correction can be performed using a Maretron display product e g DSM200 The procedure is as follows 1 Make sure the vessel is laying in flat water on a known heading 2 Use the display s menu items to locate and send the compass installation offset correction command please refer to display product user s manual Page 12 Revision 1 9 Maretron 3 3 2 Manual Installation Offset Correction
46. on from Only NMEA 2000 Interface 3 Variation from Only Manual Entry The SSC200 can be programmed to accept a specific source for the variation data using one of two possible procedures 1 Using a Maretron Display Section 4 4 1 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 4 4 2 Variation Source Selection via NMEA 0183 Interface You can program the SSC200 to use a particular variation source through the NMEA 0183 interface Refer to Appendix A for details on programming the SSC200 to use a specific variation source 5 Rate of Turn The SSC200 is capable of measuring a vessel s rate of turn and outputting the information over both the NMEA 0183 and NMEA 2000 interfaces Furthermore the SSC200 has a programmable damping period where the filter time can be increased for very slow turning Revision 1 9 Page 15 SSC200 User s Manual vessels such as tugs pushing barges Also the SSC200 rate of turn indication may be zeroed to correct for any temperature induced offset The SSC200 can be programmed with different damping periods and have the rate of turn indication zeroed using one of two possible procedures 1 Using a Maretron Display
47. on of an unsuccessful deviation calibration and the corresponding reason for the failure 3 2 1 Maretron Display Initiated Deviation Calibration Maretron display initiated deviation calibration is accomplished by turning the vessel through successive circles while the SSC200 receives a command from a Maretron display product e g DSM200 The procedure is as follows 1 Ensure that the compass has been properly installed per Section 2 2 Warm up the compass by operating it for approximately 10 minutes 3 Turn the vessel either direction such that you complete a full 360 turn in 21 2 minutes or less try not to go below 1 minute for a complete circle 4 While continuing to turn the vessel as indicated in step 3 use the display s menu items to locate and send the deviation calibration command please refer to the display product user s manual 5 Continue turning the vessel through at least three complete circles until the display indicates a successful deviation calibration While turning the vessel try to maintain a circle by holding the rudder at a constant angle In addition try to minimize the vessel s pitch and roll by calibrating on calm flat water After deviation calibration is complete the results of the deviation calibration which indicate the quality of the compass installation environment may be seen using a Maretron display product e g DSM200 please refer to the DSM200 user s manual for details Th
48. ply common V Pin 4 NET H CAN H Pin 5 NET L CAN L Figure 4 NMEA 2000 Power Connector Face Views Page 6 Revision 1 9 Maretron 5 2 NMEA2000 Power Connection Figure 5 SSC200 with NMEA 2000 Connection Only 2 4 2 Connecting to NMEA 0183 Interface The Maretron SSC200 provides a connection to an NMEA 0183 interface through an eight pin male connector 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 Revision 1 9 Page 7 SSC200 User s Manual Connector Threads Connector Threads Male Connector Female Connector Pin 1 Not Used Pin 2 Not Used Pin 3 Not used Pin 4 Not used Pin 5 TXB NMEA0183 OUT Pin 6 TXA NMEA0183 OUT Pin 7 RXB NMEA0183 IN Pin 8 RXA NMEA0183 IN 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 dev
49. put of the SSC200 Please note the following cable connections on the SSC200 GPS Connection SSC200 Connection TXA TX Blue Wire RXA RX TXB TX White wire RXB RX The SSC200 should now be transmitting true heading data Examine the NMEA 0183 sentences coming from the SSC200 or check the heading indication on the system connected to the NMEA 0183 output of the SSC200 for true heading data If no true heading data is observed at this point try d switching the wires on the GPS gt SSC200 connection as not all manufacturers are consistent in their labeling of the NMEA 0183 wires e ensuring the SSC200 is configured to transmit either HDG or HDT f ensuring the GPS antenna is transmitting Magnetic Variation Data The sentences should look one of the sentences below where the lowercase letter placeholders are replaced with numerical values SGPRMC hhmmss ss A 1111 1l a yyyyy yy a X X X X XXXXXX x x a a hh The two underlined fields contain the magnetic variation data and must be present in order for this sentence to be used for magnetic variation SGPVTG x x T x x M x x N x x K a hh The two underlined fields contain the true and magnetic course over ground data Both values must be present in order for this sentence to be used for magnetic variation Manual Variation 1 2 Connect the SSC200 to the PC s serial port and obtain the cmd gt prompt per the instructions in Appendix C To program the SSC200 with a manually magne
50. quipment 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 SSC200 in order to ensure optimal performance 1 2 Firmware Revision This manual corresponds to SSC200 firmware revision 2 0 1 3 Features The Maretron SSC200 Solid State Compass has the following features NMEA 2000 and NMEA 0183 Interfaces Solid State Magnetometers for Indicating the Vessel s Heading Solid State Accelerometers for Indicating the Vessel s Attitude Pitch and Roll Solid State Angular Rate Sensor for Indicating the Vessel s Rate of Turn Advanced Kalman Filtering for Stable and Accurate Output During Dynamic Conditions Fast Response Time Stabilizes Auto Pilot Systems Calibration for Compensating Magnetic Deviation Caused by Hard and Soft Iron Effects Installation Offset Capability for Aligning the Compass to the Vessel Programmable Variation Waterproof Enclosure and Cable System 1 4 Quick Install Installing the Maretron SSC200 compass involves the following six steps Please refer to the individual sections for additional details Unpack the Box Section 2 1 Choose a Mounting Location Section 2 2 Mount the SSC200 Compass Section 2 3 Connect the SSC200 Compass Section 2 4 Calibrate the SSC200 Compass for Magnetic Deviation Section 3 1 ao Revision 1 9 Page 1 SSC200 User s Manual 6
51. 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 SSC200 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 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 2 3 1 Mounting the SSC200 to a Horizontal Surface Mounting the SSC200 compass to a horizontal surface requires that the provided mounting brackets be fastened to the bottom of the SSC200 using the provided brass flat head screws Once the mounting brackets are securely fastened to the bottom of the SSC200 attach the SSC200 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 SSC200 to a horizontal surface is to mount it to the top of the horizontal surface however the SSC200 may be mounted upside down to the underside of a horizontal surface provided that the SSC200 is programmed to recognized that it is mounted upside down This can
52. referenced to magnetic North 6 Reserved This field is reserved by NMEA therefore the SSC200 sets all bits to a logic 1 PGN 127251 Rate of Turn The SSC200 uses this PGN to indicate the vessel s rate of turn Field 1 SID The sequence identifier field is used to tie related PGNs together For example the SSC200 will transmit identical SIDs for Vessel Heading PGN 127250 Attitude 127257 and Rate of Turn 127251 to indicate that the readings are linked together i e the data from each PGN was taken at the same time although they are reported at slightly different times Rate of Turn This field is used to report the vessel s rate of turn Reserved This field is reserved by NMEA therefore the SSC200 sets all bits to a logic 1 N PGN 127257 Attitude The SSC200 uses this PGN to indicate the vessel s attitude pitch and roll The Yaw field 2 is not used therefore this field always contains Ox7FFF data not available Field 1 SID The sequence identifier field is used to tie related PGNs together For example the SSC200 will transmit identical SIDs for Vessel Heading PGN 127250 Attitude 127257 and Rate of Turn 127251 to indicate that the readings are linked together i e the data from each PGN was taken at the same time although they are reported at slightly different times Revision 1 9 Appendix B NMEA 2000 Interfacing Page B1 SSC200 User s Manual Yaw This
53. rn Range 0 90 per Second Rate of Turn Accuracy 1 per Second 0 Pitch and Roll 15 C to 35 C Certifications Parameter Comment NMEA 2000 Level A Maritime Navigation and Radiocommunication Equipment amp Systems Tested to IEC 60945 FCC and CE Mark Electromagnetic Compatibility NMEA 2000 Parameter Group Numbers PGNs See Appendix B for Details Description PGN PGN Name Default Rate Periodic Data PGNs 127250 Vessel Heading 10 Times Second 127257 __ Attitude 1 Time Second 127251 Rate of Turn 10 Times Second Response to Requested PGNs 126464 PGN List Transmit and Receive N A 126996 Product Information N A 126998 Configuration Information N A Protocol PGNs 059392 ISO Acknowledge N A 059904 ISO Request N A 060416 ISO Transport Protocol Connection N A Management 060160 ISO Transport Protocol Data Transfer N A 060928 ISO Address Claim N A 065240 ISO Address Command N A 126206 NMEA N A NMEA 0183 Sentences See Appendix A for Details Description Acronym Sentence Name Default Rate Transmitted HDG Heading Deviation and Variation 10 Times Second Sentences HDM Heading Magnetic Not normally transmitted see Appendix A N A HDT Heading True Not normally transmitted see Appendix A N A ROT Rate of Turn 5 Times Second PMAROUT Maretron Proprietary Attitude Pitch and Roll 1 Time Second TXT Text
54. romagnetic 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 maretron com ways Telephone 1 866 550 9100 Fax 1 602 861 1777 E mail support World Wide Web _http Awww maretron com Mail Maretron LLC Revision 1 9 Attn Technical Support 9034 N 23 Ave Suite 13 Phoenix AZ 85021 USA Page 19 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 ac 387 Figure 11 Vertical Mounting Surface Template Page 20 Revision 1 9 Maretron 11 Maretron 2 Year Limited Warranty Maretron warrants the SSC200 to be free from defects in materials and workmanship for two 2 years from the date of original purchase If within the applicable period any such products shall be proved to Maretron s satisfaction to fail to meet the above limited warranty such products shall be repaired or replaced at Maretron s option Purchaser s exclusive remedy and Maretron s sole obligation hereunder provided product is returned pursuant to the return requirements below shall be limited to the repair or replacement at Maretron s option of any product not meeting the above limited warranty and which is return
55. sion 1 7 or greater e 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 Connect the SSC200 to the PC s serial port and obtain the cmd gt prompt per the instructions in Appendix C 2 Todisable transmission of the HDG sentence type the following sentence SPMARSETPX SSC200 00 0 3 To enable transmission of the HDT sentence at 100 ms intervals 10 times per second type the sentence SPMARSETPX SSC200 02 100 Note For compasses with firmware revision 1 8 or greater a NMEA 0183 checksum is optional For compasses with earlier firmware revisions a correct NMEA 0183 checksum is required 4 Type exit or simply power the SSC200 off and then on again You should now observe HDT sentences being transmitted Revision 1 9 Appendix E Transmitting the HDT Sentence Page E1 SSC200 User s Manual This page intentionally left blank Page E2 Appendix E Transmitting the HDT Sentence Revision 1 9 Maretron Appendix F Changing the NMEA0183 Identifier Transmitted by the SSC200 The identifier for NUEA0183 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
56. t periodic rate to restore periodic transmission of the PGN identified in field 2 above The resolution of this field is 1 millisecond Transmission Interval Offset 16 bits set this field s value to OxFFFF all other values will cause the request to be rejected Number of Pairs of Commanded Parameters to Follow 8 bits set this field s value to Ox0 Page B4 Appendix B NMEA 2000 Interfacing Revision 1 9 Maretron SSC200 NMEA 2000 Initiated Deviation Calibration 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 Warm up the compass by operating it for approximately 10 minutes 3 Turn the vessel either direction such that you complete a full 360 turn in 22 minutes or less try not to go below 1 minute for a complete circle 4 Send the following NMEA 2000 PGN to the SSC200 while continuing to turn the vessel PGN 126208 NMEA Command Group Function Maretron Proprietary Reset This will initiate a reset and force the SSC200 to start the calibration process see page B3 for complete description of PGN 126208 5 Continue turning the vessel through at least 3 circles until you see one of the following Maretron proprietary NMEA 2000 PGNs a PGN 126270 Maretron Proprietary S
57. tic variation value type the following sentence Revision 1 9 Appendix D Transmitting True Heading Data Page D1 SSC200 User s Manual SPMAREXE SSC200 5D 0 lt variation gt Where lt variation gt 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 SPMAREXE SSC200 5D 0 18 0 To program the SSC200 with 5 5 westerly magnetic variation as might be seen on the east coast of Florida USA type the sentence SPMAREXE SSC200 5D 0 5 5 5 The SSC200 should now be transmitting true heading data Examine the NMEA 0183 sentences coming from the SSC200 or check the heading indication on the system connected to the NMEA 0183 output of the SSC200 for true heading data Page D2 Appendix D Transmitting True Heading Data Revision 1 9 Maretron Appendix E Configuring the SSC200 to Transmit the HDT Sentence for Satellite Antennas and Radars The SSC200 is factory configured to transmit the HDG sentence 10 times per second However certain satellite antennas and radars need the HDT sentence This application note explains how to change the transmitted sentence from to HDT Prerequisites e The SSC200 compass must have firmware revi
58. tion This field is used to report the local magnetic variation as entered by the user Positive values are Easterly and negative values are Westerly N WARNING Magnetic variation changes as your location on the earth changes and it should be adjusted with these changes Neither the DSM200 nor the SSC200 will make these changes automatically they are the responsibility of the user SSC200 NMEA 2000 Non Periodic Data Transmitted PGNs 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 3 Software Code 16 bits this field s value will be 0x0001 which is the identifier for this version of the Maretron proprietary protocol 4 Command 8 bits this field s value will be 0x50 which indicates that this response contains status for deviation calibration 5 Status Code 8 bits this field will indicate the status of the calibration process with one of the values from the following table see following table Page B2 Appendix B NMEA 2000 Interfacing Revision 1 9 Maretron Status Code Message Name Description 01 Deviation Calibration This message is transmitted at the beginning of the magnetic St
59. tron All the procedures require that the vessel be turned in successive circles during which time the SSC200 uses changing heading information along with readings from the angular rate sensor to calculate hard and soft iron magnetic deviation Upon a successful completion of deviation calibration the SSC200 stores the deviation values in permanent memory for subsequent compensation Under certain conditions e g turning to fast or to slow the SSC200 will not successfully complete the calibration process and the SSC200 will not store the deviation values in its permanent memory 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 Deviation calibration done automatically at power up procedure 2 is less desirable than procedure 1 because it is more difficult to verify that a successful deviation calibration completed As an alternative to procedures 1 and 2 users with direct access to the NMEA 0183 and NMEA 2000 interfaces can perform magnetic deviation calibration directly through the NMEA 0183 interface see Appendix A or the NMEA 2000 interface see Appendix B These direct access methods also provide an indication of a successful deviation calibration or an indicati
60. xizexuenestivivereeevneuslads Figure 10 Horizontal Mounting Surface Template ceeeeeeeeees Figure 11 Vertical Mounting Surface Template ccceeeeeeeeeeteees Table of Appendices Appendix A NMEA 0183 Interfacing cccceeeeeeeeneeeeeeeeeeeeeeeeeeneeeeeeeees Appendix B NMEA 2000 Interfacing ccccccccccsecsecssecsseeneeesseeneeeseees Appendix C Connecting to a PC Via NMEA 0183 00 eee eeeeeeeeeeeeeeeeeees Appendix D Configuring the SSC200 to Transmit True Heading Data Appendix E Configuring the SSC200 to Transmit the HDT Sentence for Revision 1 9 Page v SSC200 User s Manual This page intentionally left blank Page vi Revision 1 9 Maretron 1 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 In addition the SSC200 incorporates solid state accelerometers and a solid state angular rate sensor for indicating the vessel s attitude pitch and roll and rate of turn The Maretron SSC200 is designed to operate within the harsh demands of the marine environment However no piece of marine electronic e
61. y connecting to the compass using a terminal emulator See Appendix C for details and sending the following strings to the compass through the NMEA 0183 connection shell This will cause the cmd gt command prompt to be displayed tm setbaud 38400 At this point you must change the baud rate of your connection to 38400 baud to continue as the SSC200 has now been set to the higher baud rate tm storebaud Revision 1 9 Page 9 SSC200 User s Manual This causes the new baud rate to be stored to non volatile memory so the compass will retain this baud rate when it is powered down 2 4 3 Connecting Both NMEA 2000 and NMEA 0183 Interfaces The SSC200 can be simultaneously connected to both an NMEA 2000 network and an NMEA 0183 network 2 4 4 Checking Connections Once the NMEA 2000 Power and or NMEA 0183 connections to the Maretron SSC200 have been completed check to see that heading information is being properly transmitted by observing an appropriate display Refer to Section 7 Troubleshooting if no heading information appears otherwise proceed to Section 3 entitled Calibration 3 Calibration In order to provide accurate heading indication the SSC200 must be calibrated in the vessel after installation The two calibration procedures that must be carried out are magnetic deviation calibration Section 3 1 and installation offset correction Section 3 3 These procedures should be carried out after th
62. y remove markings or may corrode the compass enclosure or seals Do not use any cleaners containing acetone as they will deteriorate the plastic enclosure e Ensure that the unit is mounted securely and cannot be moved relative to the mounting surface If the unit is loose tighten the mounting screws and repeat the magnetic deviation calibration and installation offset correction e Check the security of the cables connected to the NMEA 2000 and or NMEA 0183 interfaces and tighten if necessary Page 16 Revision 1 9 7 Troubleshooting Maretron If you notice unexpected operation of the Maretron SSC200 follow the troubleshooting procedures in this section to remedy simple problems Symptom Troubleshooting Procedure No heading output Inaccurate heading output Check the connections to the NMEA 2000 Power connector and or NMEA 0183 Connector and tighten if necessary Ensure that power is supplied to the connected NMEA 2000 or NMEA 0183 cable For NMEA 0183 connections ensure that the SSC200 is programmed to transmit the appropriate type of sentence HDT HDG or HDM required by the connected equipment If the HDT sentence is being transmitted ensure that the SSC200 is provided with a source of magnetic variation information so that it can calculate true heading from the magnetic heading Ensure the SSC200 is still mounted securely Ensure the SSC200 is still in a clean magnetic environment and that no power or ign

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