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NDC comm NDC-3 manual

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Table of contents for the manual

  • Page 1

    NMEA Data Combiner NDC-3-B User Manual Issue 1.31  Multiple talker interface for use with the NMEA 0183 standard. Serial-data networking of marine electronic devices / instruments  Personal computer (RS232) interface to NMEA 0183 standards[...]

  • Page 2

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  • Page 3

    NMEA Data Combiner - NDC-3-B Page 3 © 2005 Active Research Limited Contents Important Notices 4 Notices 4 Foreword 4 Introduction 4 General features 5 4 NMEA 0183 data input ports 5 An NMEA 0183 data combined output port 5 A PC compatible RS-232 bi-directional port 5 T echnical features 5 Software updates 5 Connecting devices together 6 The basics[...]

  • Page 4

    Actisense™ Page 4 © 2005 Active Research Limited Important Notices The Actisense™ NMEA Data Combiner (NDC-3) is intended for use in a marine environment, primarily for below deck use. If the unit is to be used in a more severe environment, such use may be considered misuse under the seller ’s warranty . The Actisense™ NMEA Data Combiner (N[...]

  • Page 5

    NMEA Data Combiner - NDC-3-B Page 5 © 2005 Active Research Limited General features 4 NMEA 0183 data input ports Each NMEA 0183 input port has a priority level. This is fixed to the logical order that matches the port numbers, i.e. port 1 has the highest priority and port 4 has the lowest. An NMEA 0183 data combined output port This output combin[...]

  • Page 6

    Actisense™ Page 6 © 2005 Active Research Limited Connecting devices together The basics NMEA data is transmitted from an information source such as GPS, depth sounder , gyro compass etc. These data sending devices are called “ T alkers ”. Equipment receiving this information such as a chart- plotter , radar or NMEA display is called a “ Li[...]

  • Page 7

    NMEA Data Combiner - NDC-3-B Page 7 © 2005 Active Research Limited 1. Four NMEA 0183 inputs. All NMEA 0183 inputs are of the differential opto- isolated type and use the unique Actisense™ low current drain circuitry (2mA @ 2.0v) to conform in full with the NMEA 0183 marine electronic device network communication standard, and are flexible enoug[...]

  • Page 8

    Actisense™ Page 8 © 2005 Active Research Limited NMEA 0183 Inputs The NMEA 0183 differential opto-isolated inputs are designed to handle a variety of NMEA 0183 device output specifications. Please determine (from device manufacturer ’s information) if the device(s) required to be connected to the Actisense™ NDC-3 conforms in full to the NME[...]

  • Page 9

    NMEA Data Combiner - NDC-3-B Page 9 © 2005 Active Research Limited Other Connections Figure 3 – RS-232 and Battery connections Connecting to a Personal Computer The RS-232 port can be connected to a PC communications port using a cable conforming to the following specification: 1. A D-type female (socket) connector for the PC end of the cable 2[...]

  • Page 10

    Actisense™ Page 10 © 2005 Active Research Limited LED Colour / Flash Count Mode / Error condition Required user response Normal operation modes The sequence below indicates a successful power-up of the NDC-3 and the commencement of data combining. Red, No flashing Start-up mode, No error No response required. A normal operation mode that should[...]

  • Page 11

    NMEA Data Combiner - NDC-3-B Page 1 1 © 2005 Active Research Limited Specifications Parameter Conditions Min. Max. Unit Supply Supply voltage 8 35 V Supply current (see note 1) Supply voltage = 12v 26 30 mA Supply voltage = 24v 16 18 mA NMEA Input voltage between +/- Logical ‘1’/stop bit -15.0 0.5 V Logical ‘0’/start bit 4.0 15.0 V Input [...]

  • Page 12

    Actisense™ Page 12 © 2005 Active Research Limited Active Research Limited 5, Wessex T rade Centre Ringwood Road Poole Dorset UK BH12 3PF T elephone: 01202 746682 (International : +44 1202 746682) Fax: 01202 746683 (International : +44 1202 746683) Actisense™ on the Web: For advice, support and product details E-mail: support@actisense.com Webs[...]