Koden GPS-20A Installation Manual
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Koden GPS-20A Installation Manual

Koden GPS-20A Installation Manual

Gps receiver module
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  • Page 2 No part of this publication may be reproduced, transmitted, translated in any form by any means without the written permission of Koden Electronics Co., Ltd. The technical descriptions contained in this publication are subject to change without notice. Koden assumes no responsibility for any errors, incidentals or consequential damages caused by misinterpretation of the descriptions contained in this publication.
  • Page 3 GPS-20A Preface Installation Manual Safety Precautions Disconnect Main Power It is still possible to receive an electric shock caused by unintentionally switching on the power during repair work. To prevent this from happening, make sure to completely disconnect the unit from the ship’s main supply before attempting any inspection.
  • Page 4 Preface GPS-20A Installation Manual Symbols used in this manual The following symbols are used in this manual. You are requested to be fully aware of the meaning of each symbol before carrying out inspection and maintenance of this equipment. Alarm mark...
  • Page 5 How to use this manual Scope of this manual This manual contains necessary information about installation of the GPS Receiver Module GPS-20A . Structure of this manual This manual is divided into sections according to the contents as described below.
  • Page 6 Preface GPS-20A Installation Manual Installation method Chapter 5 : Technical references Serial input/output data Cable connections and connector pin-outs Input/Output circuits List of geodetic system 92621632-06...

  • Page 7: Table Of Contents

    GPS-20A Chapter 1 Installation Manual General Descriptions Chapter 1 Overview Contents Page No. GPS ..................1-1 1.1.1 GPS satellite alignment ............1-1 1.1.2 GPS configuration..............1-1 SBAS (WAAS, EGNOS, MSAS) ..........1-1 Equipment outline ..............1-1 Application standard ............1-1 Software specification............1-1 Inter-connection diagram.............1-2...

  • Page 8: Chapter 1 Overview

    The GPS-20A is a high performance GPS receiver module containing an 18-channel parallel receiver sensor, which is ready for the SBAS service. By simply connecting a power supply to the GPS-20A, highly accurate position data can be quickly supplied to a Plotter or the ship’s navigation devices. The GPS-20A is also compatible with differential correction service broadcast from conventional beacon stations.
  • Page 9 10.8 to 31.2V MDC-1800 series MDC-22/25 series To ship’s power supply 10.8 to 31.2V HDEB-9S HDE-CTF Radar Sensor CW-563-* MDS series To ship’s power supply 10.8 to 31.2V Fig. 1.1 Inter-connection diagram between GPS receiver module and GPS-20A unit 92621632-06...
  • Page 10 GPS-20A Chapter 2 Installation Manual Equipment Composition Chapter 2 Equipment Composition Page No. 2.1 Standard equipment ..............2-1 2.2 Optional items................2-1 92621632-00 Contents...
  • Page 11 GPS-20A Chapter 2 Installation Manual Equipment Composition Chapter 2 Equipment Composition 2.1 Standard equipment Name Descriptions Remarks Weight Q’ty Type name not specified Cable: CW-563-** without connectors fitted Type name not specified Cable: CW-563-1-** with connector (1006) fitted 250 g...
  • Page 12 GPS-20A Chapter 3 Installation Manual Specifications Chapter 3 Specifications Page No. Specifications................. 3-1 Serial data................3-1 Power supply specifications ..........3-1 Compass safe distance ............3-1 Operating environment ............3-2 External dimensions and Weight ........3-2 92621632-06 Contents...

  • Page 13: Chapter 3 Specifications

    IEC 61162-1 (NMEA-0183 Ver. 2.0) *Ver. 1.5 is available on option basis. (2) Input data DGPS Input: RTCM SC-104, 4800bps Parameter settings: KODEN PRIVATE COMMAND, 4800bps Refer to chapter 5 for details. (3) Output data Sentence: GGA, GLL, VTG, RMC, ZDA, GSA, GSV etc.

  • Page 14: Operating Environment

    13.2 Hz and 60 Hz. (3) Water resistance IPX6 standard (IEC 60945) Water resistant type (JISF8001) 3.6 External dimensions and weight Dimensional diagram: Refer to the diagram below Weight: 250g (0.55 lb) (Except cable) Figure 3.1 GPS-20A external dimensions 92621632-06...

  • Page 15: Chapter 4 Installation

    GPS-20A Chapter 4 Installation Manual Installation Chapter 4 Installation Page No. 4.1 Installation precautions............4-1 4.2 Unpacking and inspection of the goods........ 4-1 4.3 Installation site................. 4-1 4.4 Installation method ..............4-3 92621632-00 Contents...
  • Page 16 Unpack the contents and check each component against the component delivery list. If the contents differ from that which is on the list, or there are damaged components, contact the shipping agent or the nearest KODEN dealer. 4.3 Installation site Be sure to install the GPS sensor in the highest possible location on the ship for optimum reception of the satellite signal.
  • Page 17 Chapter 4 GPS-20A Installation Installation Manual Table 1 Minimum distances between support struts Object Diameter Minimum distance Support strut 10cm 1.5m Support strut 30cm 3.0m VHF whip antenna 4m (min) 4m (min) Loop antenna RX whip antenna 1m (min) INMARSAT...
  • Page 18 GPS-20A Chapter 4 Installation Manual Installation 4.4 Installation method The following examples show typical installation methods. Installation example 1: The pole used has no screw thread tooled. Fix the GPS antenna to the pole using the hose band and tighten firmly.
  • Page 19 Chapter 4 GPS-20A Installation Installation Manual Installation example 3 GPS sensor Thread: 1-14UNS-2A Thread per 25.4 mm (1 inch): 14 Pitch: 1.8143 mm Thread length: 26 mm Mounting pipe (User supply) Thread diameter: 25.4 mm Pitch diameter: 24.221 mm Connecting cable...
  • Page 20 Output sentence................5-2 5.2 Cable connections and connector pin-outs ......5-4 5.3 Input/Output circuits ..............5-6 5.3.1 Connections to navigation unit ........... 5-6 5.3.2 Connections to beacon receiver ..........5-6 5.3.3 GPS-20A input/output circuit............5-6 5.4 List of geodetic system ............. 5-7 92621632-00 Contents...

  • Page 21: Serial Input/Output Data

    GPS-20A Chapter 5 Installation Manual Technical References Chapter 5 Technical References 5.1 Serial input/output data 5.1.1 Input data 5.1.1.1 Various settings 1: Header (HEX) X OOOO <CR><LF> 2: Setting value (ASCII code, integer) 3: End code Baud rate: 4800bps Item to set...

  • Page 22: Data Configuration

    Chapter 5 GPS-20A Installation Manual Technical References 5.1.2.3 Data configuration Output voltage Signal speed Output current Output sentence Update rate level 4800 Baud RS-422 40mA max GGA+GLL+VTG+RMC+ZDA 1sec PKODA+PKODG,1+PKODG,7 2secs +GSA+GSV 5.1.2.4 Output sentence Note: *hh: Checksum <CR>: Carriage return <LF>: Line feed...
  • Page 23 Talker device Day: 01 – 31 (UTC) Start of sentence PKODA Satellite Information (KODEN proprietary sentence) $ PKODA, P/H, xxx.x, xx, xx, xx, xx, xx, xx, xx, xx, xxx, M, xxx.x, N, xxx.x, 0/-xx.x, x, x <CR><LF> PDOP Azimuth, Longiitude...

  • Page 24: Cable Connections And Connector Pin-Outs

    Start of sentence 5.2 Cable connections and connector pin-outs There are 2 types of cables for connecting the GPS-20A to external equipment. One type has a connector and the other does not. Furthermore, there are 4 different types of connector cables as shown below.
  • Page 25 GPS-20A Chapter 5 Installation Manual Technical References Connecting up without using a connector * No type name Cable CW-563-**M (note) Red: DC (+) Orange: Data input (+) Blue: Data input (-) White: Data output (+) Green: Data output (-) Black: DC (-)

  • Page 26: Input/Output Circuits

    IN (-) OUT (+) Data input (+) Orange Differential data Data input (-) Blue OUT (-) 5.3.3 GPS-20A input/output circuit Serial data input circuit (listener side): Input load: 600 ohm +Vcc Device: Photo-coupler TLP151A (Toshiba) TLP-115A DATA IN (+) DATA OUT(+)

  • Page 27: List Of Geodetic System

    GPS-20A Chapter 5 Installation Manual Technical References Serial data output circuit (talker side): Output format: RS422 Driver: HD29050 (Hitachi) +Vcc HD29050 DATA OUT(+) DATA OUT(-) 5.4List of geodetic system Location Location Location Location Iceland 1955 Tunisia WGS-84 Chatham Ireland 1965...
  • Page 28 Chapter 5 GPS-20A Installation Manual Technical References Saudi Arabia Marshall Islands Zambia/Zimbabwe Catalonia Salvage Island Maha Island 1971 Kenya Mascarene Santa Maria Is. Mascarene Ascension Islands Santo Island Santo Island Malaysia/Singapore Iwo Islands Santa Maria Is. East Fauklands Zambia/Zimbabwe Midway...

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