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Garmin DGPS 53 manual

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Table of contents for the manual

  • Page 1

    owner’ s manual and refer ence guide DGPS 53 integrated GPS/DGPS receiver DGPS53Cover.p65 8/29/00, 11:10 AM 1[...]

  • Page 2

    © 2000 GARMIN Corporation GARMIN International, Inc. 1200 East 151st Street, Olathe, Kansas 66062, U.S.A. T el. 913/397.8200 or 800/800.1020 Fax 913/397.8282 GARMIN (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey , SO51 9AQ, U.K. T el. 44/1794.519944 Fax 44/1794.519222 GARMIN (Asia) Corporation No. 68, Jangshu 2nd Rd., S[...]

  • Page 3

    1 Introduction Limited W arranty GARMIN Corporation warrants this product to be free from defects in materials and workmanship for one year from the date of pur chase. GARMIN will, at its sole option, repair or replace any components that fail in normal use. Such repairs or replacement will be made at no char ge to the customer for parts or labor .[...]

  • Page 4

    2 Introduction Cautions All differ ential beacon receivers decode correction data determined at the beacon transmitter site via a GPS receiver(s). The GPS system is operated by the govern- ment of the United States which is solely responsible for their accuracy and maintenance. The DGPS beacon transmitters are operated by the U.S. Coast Guard (or s[...]

  • Page 5

    3 Introduction T able of Contents Introduction Limited W arranty ..............................................1 Cautions ..........................................................2 T able of Contents ............................................3 Product Registration ........................................4 Overview Capabilities & Package Cont[...]

  • Page 6

    4 Introduction Product Registration Customer Service Product Registration Help us better support you by completing our on-line registration today! Have the serial number of your DGPS 53 handy and connect to our website ( www .gar min.com ). Look for the Product Registration link on the Home page. If you have previously registered a GARMIN product p[...]

  • Page 7

    5 Capabilities The DGPS 53 offers a host of powerful capabilities for enhanced performance and accuracy: • Per formance— 12-channel GPS receiver tracks and uses up to 12 satellites for fast, accurate positioning. Single channel DGPS receiver has high-sensitivity automatic and manual tuning throughout the beacon broadcast band. • Ease of Use?[...]

  • Page 8

    6 Mounting the Receiver Please read through these instr uctions thoroughly before attempting installation. Make sur e you completely understand these instructions before you begin. When in doubt, seek pr ofessional assistance. The following additional items are needed or optional to complete the installation of your DGPS 53: • Antenna mount— Si[...]

  • Page 9

    7 Installation Mounting the Receiver If a problem is found, try altering the location of the unit or wiring. Often moving the antenna a few feet away from the source of interference will solve the problem. When a suitable configuration is found, a permanent installation should be made. Select the mounting location according to your preferences. Kee[...]

  • Page 10

    8 Installation Connecting the DGPS 53 Connecting the DGPS 53 The final step in installing the DGPS 53 is to connect the receiver’ s DA T A IN, DA T A OUT , REMOTE ON/OFF and GROUND (Return) lines to your chartplotter or PC. The DGPS 53 is designed to transmit/receive data at 4800-19200 baud (bits per second), which is suitable for use with most d[...]

  • Page 11

    9 Installation Connecting the DGPS 53 DGPS 53 Power/Data Cable & DB-9 Serial Connection 7 6 1 2 4 3 5 DGPS 53 (7) YELLOW : PPS (6) GREEN: DGPS STATUS LED (5) WHITE: REMOTE ON/OFF* (1) RED: 8-35 VDC (2) BLACK: GROUND (4) BROWN: DATA IN PIN 5: GROUND (3) BLUE: DATA OUT PIN 3: DATA OUT PIN 2: DATA IN 1 4 6 7 8 9 Power/Data Cable 8-35VDC (-) (+) DB[...]

  • Page 12

    10 Fir st T ime Fix Once the DGPS is installed and powered on, it will begin to search for satellites and a DGPS beacon signal. Initially , it may take longer than normal to scan through the DGPS beacon frequencies. The DGPS 53 will output corrected navigation data once it has calculated an initial position fix and sucessfully received a DGPS signa[...]

  • Page 13

    11 Operation Using the DGPS 53 The following sections describe the NMEA data format of each sentence transmitted and received by the DGPS 53. The baud rate selection and one-pulse-per- second output interfaces are also described. NMEA Received sentences This section defines the sentences which can be received by the DGPS 53. Null fields in the conf[...]

  • Page 14

    12 Operation Using the DGPS 53 Sensor Initialization Information (PGRMI) The $PGRMI sentence provides information used to initialize the position and time used for satellite acquisition. Receipt of this sentence by the DGPS 53 causes the softwar e to restart the satellite acquisition pr ocess. If ther e ar e no err ors in the sentence, it will be e[...]

  • Page 15

    13 Using the DGPS 53 Operation All configuration changes take ef fect after receipt of a valid value except baud rate and PPS mode. Baud rate and PPS mode changes take effect on the next power cycle. Output Sentence Enable/Disable (PGRMO) The $PGRMO sentence pr ovides the ability to enable and disable specific output sentences. The following senten[...]

  • Page 16

    14 Operation NMEA T r ansmitted Sentences This section defines the sentences which can be output by the DGPS 53. (GP ALM, GPGGA, GPGSA, GPGSV , GPRMC, GPVTG, PGRME, PGRMT , PGRMV , PGRMF , LCGLL, LCVTG) Sentence T ransmission Rate Sentences are transmitted with respect to the user selected baud rate. Regar dless of the selected baud rate, the infor[...]

  • Page 17

    15 Operation Global Positioning System Fix Data (GGA) $GPGGA,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,M,<10>,M,<11>,<12>*hh<CR><LF> <1> UTC time of position fix, hhmmss format <2> Latitude, ddmm.mmmm format (leading zer os will be transmitted) <3> Latit[...]

  • Page 18

    16 Using the DGPS 53 Operation Recommended Minimum Specific GPS/TRANSIT Data (RMC) $GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,<12>*hh<CR><LF> <1> UTC time of position fix, hhmmss format <2> Status, A = V alid position, V = NA V receiver warning[...]

  • Page 19

    17 Using the DGPS 53 Operation T rack Made Good and Ground Speed with LORAN T alker ID (LCVTG) The LCVTG sentence reports track and velocity information. $LCVTG,<1>,T ,<2>,M,<3>,N,<4>,K,<5><CR><LF> <1> T rue course over ground, 000 to 359 degr ees (leading zer os will be transmitted) <2> Magneti[...]

  • Page 20

    18 Using the DGPS 53 Operation $PGRMT ,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>*hh<CR><LF> <1> Product, model and software version <2> ROM checksum test, P = pass, F = fail <3> Receiver failur e discr ete, P = pass, F = fail <4> Stored data lost, R = retained, L = [...]

  • Page 21

    19 Reference GPS: How It W orks GPS: How It W orks The global positioning system is a satellite-based navigation system consisting of a network of 24 orbiting satellites that are twelve thousand miles in space and in six different orbital paths. The satellites ar e constantly moving and you can receive satellite signals anywhere in the world, at an[...]

  • Page 22

    20 DGPS: How It W orks DGPS: How It W orks Differ ential GPS (DGPS) is a technique used to improve the accuracy of the Global Positioning System. DGPS reduces the effects of ionospheric variations and can improve position accuracy typically to 1-5 meters. The DGPS Beacon T ransmitter is placed at a known location (i.e., the exact position of the si[...]

  • Page 23

    21 Sources of Err or Using a DGPS Beacon Receiver with your existing GPS Receiver can provide substantial improvements in accuracy; however , there may be occasions when the best possible accuracy will not occur . Several factors can contribute to a degraded DGPS accuracy . Loss of DGPS Beacon Signal — Obviously , the lack of DGPS correction data[...]

  • Page 24

    22 Reference Sources of Error Number of Satellites Visible — As previously stated, the number of satellites available can affect position accuracy . T o apply the corrections provided for the satellites received at the beacon transmitter station, the same satellites (at least in part) must be received by your GPS receiver . And, certainly , if th[...]

  • Page 25

    23 Reference T roubleshooting Chart 1) Beacon signal weak or not received. Interference from ship’ s electrical system, thunderstorm activity , or another source is inhibiting signal lock on. W rong frequency or bit rate selected. 2) Accuracy not as expected Poor satellite geometry exists or too few satellites are visible. Interference to GPS ant[...]

  • Page 26

    24 Reference Physical Size: 4.6”W x 5.3”H (117mm x 135mm) W eight: 23.9 ounces (0.678 kg) Operating Range: -68°F to +158°F (-20°C to +70°C) W aterproof: -1 meter submersion for 30 minutes IPX7 rating for IEC529 Mount Thread Size: 1” diameter at 14 threads/inch Power V oltage: 8 - 35 vDC using supplied power/data cable . Surge and reverse [...]

  • Page 27

    25 Appendix A Earth Datums The following is a list of the GARMIN DGPS 53 earth datum indexes and the corresponding earth datum name (including the ar ea of application): 0 ADINDAN - Ethiopia, Mali, Senegal, Sudan 1 AFGOOYE - Somalia 2 AIN EL ABD 1970 - Bahrain Island, Saudi Arabia 3 ANNA 1 ASTRO 1965 - Cocos Island 4 ARC 1950 - Botswana, Lesotho, M[...]

  • Page 28

    26 Appendix A Earth Datums 33 GUAM 1963 - Guam Island 34 GUX 1 ASTRO - Guadalcanal Island 35 HJORSEY 1955 - Iceland 36 HONG KONG 1963 - Hong Kong 37 INDIAN - Bangladesh, India, Nepal 38 INDIAN - Thailand, Vietnam 39 IRELAND 1965 - Ireland 40 ISTS O73 ASTRO 1969 - Diego Garcia 41 JOHNSTON ISLAND 1961 - Johnston Island 42 KANDA W ALA - Sri Lanka 43 K[...]

  • Page 29

    27 Appendix A Earth Datums 71 OBSER V A TORIO 1966 - Corvo and Flor es Islands (Azor es) 72 OLD EGYPTIAN - Egypt 73 OLD HA W AIIAN - Mean V alue 74 OMAN - Oman 75 PICO DE LAS NIEVES - Canary Islands 76 PITCAIRN ASTRO 1967 - Pitcair n Island 77 PUER TO RICO - Puerto Rico, Virgin Islands 78 QA T AR NA TIONAL - Qatar 79 QORNOQ - South Greenland 80 REU[...]

  • Page 30

    28 A Antenna Mount..................................6-7 Auto-T uning........................................10 B Baud Rate........................................8, 11 Beacon Range.......................................14 Beacon Reference Card...........................5 Beacon System.....................................20 C Capabilities...........[...]

  • Page 31

    DGPS53Cover.p65 8/29/00, 11:10 AM 3[...]

  • Page 32

    © 2000 GARMIN Corporation GARMIN International, Inc. 1200 East 151st Street, Olathe, Kansas 66062, U.S.A. GARMIN (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey , SO51 9AQ, U.K. GARMIN (Asia) Corporation No. 68, Jangshu 2nd Rd., Shijr , T aipei County , T aiwan www .garmin.com Part Number 190-00194-00 Rev . A DGPS53Cover[...]