® GPS200 GPS Antenna/Receiver User’s Manual Revision 1.2 Copyright © 2012 Maretron, LLP All Rights Reserved Maretron, LLP 9014 N. 23rd Ave #10 Phoenix, AZ 85021-7850 http://www.maretron.com Maretron Manual Part #: M002501 Revision 1.
GPS200 User’s Manual Revision History Revision Description 1.0 Initial Revision 1.1 Corrected address in Section 7 1.2 Added prohibition of red Loctite threadlocking compound and cleaning agents containing acetone Page ii Revision 1.
® Table of Contents 1 2 3 4 5 6 7 8 9 Introduction ....................................................................................................................... 1 1.1 Firmware Revision .................................................................................................... 1 1.2 GPS200 Features ..................................................................................................... 1 Installation .........................................................................
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® 1 Introduction Congratulations on your purchase of the Maretron GPS200 GPS Antenna/Receiver. Maretron has designed and built your GPS200 to the highest standards for years of reliable, dependable, and accurate service. The Maretron GPS200 is designed to operate within the harsh demands of the marine environment. However, no piece of marine electronic equipment can function properly unless installed and maintained in the correct manner.
GPS200 User’s Manual 1. Level with the earth’s horizontal plane – This gives the GPS200 antenna the optimal view of satellites from all directions. 2. High Enough to have a clear view of the sky to the horizon in all directions unblocked by masts or antennas – The GPS200 provides the best readings when it has access to as many satellites as possible. 3.
® Figure 1 – Mounting the GPS200 to a flat surface 2.3.2 Mounting the GPS200 to a Standard Marine Pole Mount Screw the included GPS200 antenna mount base to the standard marine mount. Thread the NMEA 2000® cable through the standard marine mount and the antenna mount base from the bottom out through the top and connect it to the GPS200 unit (see Section 2.4 below). Finally, attach the GPS200 to the antenna mount base using the included brass mounting screws and lock washers as shown in Figure 2.
GPS200 User’s Manual 2.4 Connecting the GPS200 The Maretron GPS200 provides a connection to an NMEA 2000® interface through a connector that can be found on the bottom of the device (see Figure 3). NMEA 2000® Connector Figure 3 – GPS200 Interface Connector The NMEA 2000® connector is a five pin male connector (see Figure 4).
® Figure 4 – NMEA 2000® Connector Face Views 2.4.1 Checking Connections Once the NMEA 2000® connection to the Maretron GPS200 has been completed, check to see that GPS information is being properly transmitted by observing an appropriate display. Refer to Section 5, “Troubleshooting”, if no GPS information appears. 3 Operation As shipped from the factory, the GPS200 automatically provides position, time, SOG, COG, magnetic variation, and satellite information and requires no user configuration.
GPS200 User’s Manual These parameters may be configured using a Maretron display (DSM250), or the parameters can be configured using a Maretron NMEA 2000®/USB gateway (USB100) and Maretron’s N2KAnalyzer software. Users with direct access to the NMEA 2000® interface may configure these parameters directly through the NMEA 2000® interface. Please refer to Appendix A for a description of the NMEA 2000® messages used to configure these parameters. 3.
® • • • Clean the unit with a soft cloth. Do not use chemical cleaners as they may remove paint or markings or may corrode the GPS200 enclosure or seals. Do not use any cleaners containing acetone, as they will deteriorate the plastic enclosure. 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. Check the security of the cable connected to the NMEA 2000® interface and tighten if necessary. Revision 1.
GPS200 User’s Manual 5 Troubleshooting If you notice unexpected operation of the Maretron GPS200, follow the troubleshooting procedures in this section to remedy simple problems.
® 6 Technical Specifications Specifications Parameter Position Accuracy (Autonomous) Position Accuracy (WAAS) Channels Tracking Sensitivity Position Update Rate Speed Update Rate Time Update Rate Hot Start Warm Start Cold Start Satellite Based Augmentation System Acceleration Limit Altitude Limit Velocity Limit Jerk Limit Battery Backup Value <3m <2.
GPS200 User’s Manual Electrical Parameter Operating Voltage Power Consumption Load Equivalence Number (LEN) Reverse Battery Protection Load Dump Protection Value 9 to 16 Volts <100mA 2 Yes Yes Comment DC Voltage Average Current Drain NMEA 2000® Spec. (1LEN = 50 mA) Indefinitely Energy Rated per SAE J1113 Mechanical Parameter Value 4” Diameter x 1.65” Tall 6 oz.
® 8 Installation Template Please check the dimensions before using the following diagram as a template for drilling the mounting holes; the printing process may have distorted the dimensions. 2.11” Figure 5 – Horizontal Mounting Surface Template Revision 1.
GPS200 User’s Manual 9 Maretron (2 Year) Limited Warranty Maretron warrants the GPS200 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.
® Appendix A – NMEA 2000® Interfacing GPS200 NMEA 2000® Periodic Data Transmitted PGNs PGN 126992 – System Time The GPS200 uses this PGN to provide a regular transmission of UTC time and date and to provide synchronism for measurement data. The factory default for periodic transmission rate is once per second. The transmission of this PGN can be disabled or the transmission rate of this PGN can be changed (see PGN 126208 – NMEA Request Group Function – Transmission Periodic Rate).
GPS200 User’s Manual The GPS200 uses this PGN to provide latitude and longitude referenced to WGS84. The factory default for periodic transmission rate is 10 times per second. The transmission of this PGN can be disabled or the transmission rate of this PGN can be changed (see PGN 126208 – NMEA Request Group Function – Transmission Periodic Rate).
® 4: Latitude – Latitude in 1x10-16 degrees ("-" = south, “+” = north) 5: Longitude – Longitude in 1x10-16 degrees ("-" = west, “+” = east) 6: Altitude – Altitude referenced to WGS-84 in (resolution of 1x10-6 m) 7: Type of System – This field is used to indicate type of GPS system. The GPS200 will show either 0 (GPS) or 3 (GPS+SBAS, factory default) dependent on whether the user has enabled SBAS. 8: Method, GNSS – This field is used to indicate the quality of GNSS information.
GPS200 User’s Manual 4: Reserved (2 bits) – This field is reserved by NMEA; therefore, this field always contains a value of 0x3 (the GPS200 sets all reserved bits to a logic 1) 5: HDOP – This field is used to indicate the horizontal dilution of precision with a resolution of 1x10-2 (unitless). 6: VDOP – This field is used to indicate the vertical dilution of precision with a resolution of 1x10-2 (unitless).
® GPS200 NMEA 2000® Non-Periodic Data Transmitted PGNs PGN 129538 – GNSS Control Status The GPS200 uses this PGN to provide the GNSS common satellite receiver parameter status. GPS200 sends this PGN only when requested by PGN 059904 (ISO Request). Field 1: SV Elevation Mask – If the elevation of a satellite (angle above the horizon) is below this value, the GPS200 will not use that satellite in the solution. Units are 1x10-4 radians.
GPS200 User’s Manual This will change the configuration of the GPS200. Field 1: Complex Command Group Function Code (8 bits) – set this field’s value to 0x01, which denotes a command PGN. 2: Commanded PGN (24 bits) – set this field’s value to 129538, which denotes the GNSS Control Status PGN. 3: Priority Setting (4 bits) – set this field’s value to 0x8, which indicates to leave priority settings unchanged.
® 11: Software Code (16 bits) – set this field’s value to 0x0001, which is the identifier for this version of the Maretron proprietary protocol 12: Maretron Command (8 bits) – set this field’s value to 0x30, which will force the GPS Engine to restart as selected by the following field. 13: Restart mode (8 bits) – set this field’s value to select the restart mode, 0=Factory restart, 1=Cold start.
