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Garmin 190-00307-00 Automobile Accessories User Manual

1. 0 0 Power Source eo Yellow Meaurement Pulse Output 2 Red Vin GROUND Host Application 3 Black GND NMEA Device osan A sue ono Gan wee 77 6 Green RCV Figure 3 Basic NMEA Device Interconnection GPS 18 Technical Specifications 190 00307 00 Page 9 Rev D 3 MECHANICAL CHARACTERISTICS amp MOUNTING The central threaded recess accepts a metric M3 threaded bolt The recess is approximately 4 mm deep 4 32 0 08 mm The following drawings show example geometries for mounting hardware in case you wish to design your own custom mount Figure 5 shows mounting geometry for a mount formed from steel sheet metal that is 1 15 mm thick Figure 7 shows similar mounting geometry for mount formed from aluminum sheet metal that is 1 25 mm thick Use caution when tightening the mounting bolt Tightening the mounting bolt can cause the mount to pull tight directly against the metal insert not against the plastic housing which would tend to pull the insert out of the plastic Figure 6 shows the dimensions of our GPS 18 Flush Mount part number 010 10453 00 4x 33 00 UNITS MILLIMETERS Figure 4a GPS 18 Bottom Case Dimensions Under Mold 26 98 Figure 4b GPS 18 Bottom Case Outside of Casin GPS 18 Technical Specifications 190 00307 00 Rev D Page 10 1 15 RO 50 90 Figure 5 GPS 18 Suction Cup Mount Center Hole Dimensions C SINK
2. 69 NAHRWAN Saudi Arabia 70 NAHRWAN United Arab Emirates 71 OBSERVATORIO 1966 Corvo and Flores Islands Azores 72 OLD EGYPTIAN Egypt GPS 18 Technical Specifications 190 00307 00 2 Rev D Page 22 73 OLD HAWAITAN Mean Value 74 OMAN Oman 75 PICO DE LAS NIEVES Canary Islands 76 PITCAIRN ASTRO 1967 Pitcairn Island 77 PUERTO RICO Puerto Rico Virgin Islands 78 QATAR NATIONAL Qatar 79 QORNOQ South Greenland 80 REUNION Mascarene Island 81 ROME 1940 Sardinia Island 82 RT 90 Sweden 83 PROVISIONAL SOUTH AMERICAN 1956 Bolivia Chile Colombia Ecuador Guyana Peru Venezuela 84 SOUTH AMERICAN 1969 Argentina Bolivia Brazil Chile Colombia Ecuador Guyana Paraguay Peru Venezuela Trinidad and Tobago 85 SOUTH ASIA Singapore 86 PROVISIONAL SOUTH CHILEAN 1963 South Chile 87 SANTO DOS Espirito Santo Island 88 SAO BRAZ Sao Miguel Santa Maria Islands Azores 89 SAPPER HILL 1943 East Falkland Island 90 SCHWARZECK Namibia 91 SOUTHEAST BASE Porto Santo and Madeira Islands 92 SOUTHWEST BASE Faial Graciosa Pico Sao Jorge and Terceira Islands Azores 93 TIMBALAIT 1948 Brunei and East Malaysia Sarawak and Sabah 94 TOKYO Japan Korea Okinawa 95 TRISTAN ASTRO 1968 Tristan da Cunha 96 User defined earth datum 97 VITI LEVU 1916 Viti Levu Island Fiji Islands 98 WAKE ENIWETOK 1960 Marshall Islands 99 WORLD GEODETIC SYSTEM 1972 100 WORLD GEODETIC SYSTEM 1984 101 ZANDERIJJ Surinam 102 CH 1903 Switzerland
3. 5Hz Status A Valid position V NAV receiver warning Mode indicator only output if NMEA 0183 version 2 30 active A Autonomous D Differential WAAS E Estimated N Data not valid GPS 18 Technical Specifications 190 00307 00 Rev D Page 18 4 2 10 Estimated Error Information PGRME PGRME lt 1 gt M lt 2 gt M lt 3 gt M hh lt CR gt lt LF gt Estimated horizontal position error HPE 0 0 to 999 9 meters Estimated vertical position error VPE 0 0 to 999 9 meters Estimated position error EPE 0 0 to 999 9 meters 4 2 11 GPS Fix Data Sentence PGRMF PGRMF lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt 9 gt lt 10 gt lt 11 gt lt 12 gt lt 13 gt lt 14 gt lt 15 gt hh lt CR gt lt LF gt GPS week number 0 to 1023 GPS seconds 0 to 604799 UTC date of position fix ddmmyy format UTC time of position fix hhmmss format for GPS 18 PC LVC hhmmss s format for GPS 18 5Hz GPS leap second count Latitude ddmm mmm format for GPS 18 PC LVC ddmm mmmmm format for GPS 18 5Hz leading zeros must be transmitted Latitude hemisphere N or S Longitude ddmm mmm format for GPS 18 PC LVC ddmm mmmmm format for GPS 18 5Hz leading zeros must be transmitted Longitude hemisphere E or W Mode M manual A automatic Fix type 0 no fix 1 2D fix 2 3D fix Speed over ground 0 to 1851 kilometers hour Course over ground 0 to 359
4. GPGGA GPGSA GPGSV GPRMC and PGRMT The following sentences are enabled at the factory for the GPS 18 5Hz GPGGA GPGSA GPRMC GPUTG and PGRMT PGRMO lt 1 gt lt 2 gt hh lt CR gt lt LF gt Target sentence description for example PGRMT GPGSV etc Target sentence mode where 0 disable specified sentence 1 enable specified sentence 2 disable all output sentences 3 enable all output sentences except GPALM 4 restore factory default output sentences The following notes apply to the PGRMO input sentence 1 If the target sentence mode is 2 disable all 3 enable all or 4 restore defaults the target sentence description is not checked for validity In this case an empty field is allowed for example PGRMO 3 or the mode field may contain from 1 to 5 characters 2 If the target sentence mode is 0 disable or 1 enable the target sentence description field must be an identifier for one of the sentences that can be output by the GPS sensor 3 If either the target sentence mode field or the target sentence description field is not valid the PGRMO sentence will have no effect 4 PGRMO GPALM 1 will cause the GPS sensor to transmit all stored almanac information All other NMEA 0183 sentence transmission will be suspended temporarily 5 PGRMO G will cause the COM port to change to Garmin Data Transfer format for the duration of the power cycle The Garmin mo
5. 18 5Hz GPS 18 Technical Specifications 190 00307 00 Rev D Page 19 4 2 14 DGPS Beacon Information PGRMB NOTE The GPS 18 products do not support PGRMB at this time PGRMB lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt K lt 6 gt lt 7 gt lt 8 gt hh lt CR gt lt LF gt Beacon tune frequency 0 0 283 5 to 325 0 kHz in 0 5 kHz steps Beacon bit rate 0 25 50 100 or 200 bps Beacon SNR 0 to 31 Beacon data quality 0 to 100 Distance to beacon reference station in kilometers Beacon receiver communication status 0 Check Wiring 1 No Signal 2 Tuning 3 Receiving 4 Scanning DGPS fix source R RTCM W WAAS N Non DGPS Fix DGPS mode A Automatic W WAAS Only R RTCM Only N None DGPS disabled 4 3 BAUD RATE SELECTION Baud rate selection can be performed by sending the appropriate configuration sentence to the GPS sensor as described in the PGRMC Section 4 1 2 Sensor Initialization Information PGRMD field lt 10 gt 4 4 MEASUREMENT PULSE OUTPUT GPS 18 LVC amp 18 5Hz ONLY 4 4 1 One Pulse Per Second PPS Output GPS 18 LVC Only The highly accurate one pulse per second PPS output is provided for applications requiring precise timing measurements After the initial position fix has been calculated the PPS signal is generated and continues until power down The rising edge of the signal is aligned to the start of each GPS second within 1 us fo
6. 18 LVC Only ce eeeeceesseeeeeseeeeeeeeeceeaeceeeeaeeeeeseeaeees 20 4 4 2 Five Pulse Per Second Output GPS 18 5Hz Only eeeeeseescescesceecsecseeseeseeseeeesseeseesseasesees 20 Appendix A Earth Datum List ossessoosoossessossocssessossoossessossocssossossoossosssesoossosssesoossees 2L Appendix B Binary Phase Output Format cccscccsscssssssscscsscscscssssssccsscceseeseesee 24 Appendix C Changing the Baud Rate in Garmin Mode ccccsscessssscsesecesseensee 29 Appendix D GPS 18 PC LVC 18 5Hz amp Windows Serial Mouse Issue 30 Appendix E Sensor Configuration Soft ware ccsscccssssscsssccscsecssscsscssssssseeseseess J2 Downloading the Sensor Configuration Software cccecscsecseeseeeesecseeseeseeseescsecsesseeseeaeeeeseesesseesesseeaeesseeeeees 32 Selecting a Modelin ose seseseesesecelegeh Sug ecveeeendedestepeevevoss lols SHRUG beds hatgu e a ted chee nusaoresaeed bes Semis shes 32 Connecting to the Sensor mossar sense steed acai d ete A sees Satan dian EE AEE EE E e EEA 32 MVS CTs ace soo a a a ct oeten ny dare A N a ction IIE gen 33 COMM MENU RERE N AEREE AEE EEE EAE EE EAE A AE EEE AA AEA AEE AEE 33 Omi gs MA Sn 222555 E S A A E eae apo sd uaa ta ened 33 View Meiinoar reece reenter errr tae ree A ers ert cree eer res a eer eee NEEE 34 Help Menus cites eea aiivetiuced NA R NR AA RNR A A A E ARO E 34 LIST OF TABLES AND FIGURES Table 1 GPS 18 LVC amp GPS 18 5Hz W
7. GPS 18 PC and LVC TIA 232 F RS 232 compatible asynchronous receiver Default setting is 4800 baud e GPS 18 5Hz TIA 232 F RS 232 compatible asynchronous receiver Default setting is 19200 baud 1 5 5 2 Garmin Interface and Garmin USB Protocol Refer to the Garmin Device Interface Specification for information about the Garmin USB Protocol The document is located on the Garmin Web site at http www garmin com support commProtocol html See also Appendix B Binary Phase Output Format for additional information concerning access to raw pseudo range and carrier phase data from the GPS 18 USB Refer to the Garmin Device Interface Specification for details on the Garmin interface At the time of this printing these specs are available from the technical suppport section of our Web site http www garmin com support commProtocol html 1 5 5 3 GPS 18 PC GPS 18 LVC amp GPS 18 5Hz Protocols e NMEA 0183 Version 2 0 or NMEA 0183 Version 2 30 Version 2 0 is factory default programmable by data field 7 of the PGRMC1 sentence described in Section 4 1 4 Additional Sensor Configuration Information PGRMC1 e Available NMEA 0183 output sentences include GPALM GPGGA GPGSA GPGSV GPRMC GPVTG GPGLL PGRME PGRMF PGRMT PGRMV and PGRMB Garmin proprietary sentences See Section 4 2 Transmitted NMEA 0183 Sentences for format descriptions e Configuration and initialization is accomplished with NMEA 0183 input sentences Al
8. 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 073 ASTRO 1969 Diego Garcia 41 JOHNSTON ISLAND 1961 Johnston Island 42 KANDAWALA Sri Lanka 43 KERGUELEN ISLAND Kerguelen Island 44 KERTAU 1948 West Malaysia Singapore 45 L C 5 ASTRO Cayman Brac Island 46 LIBERIA 1964 Liberia 47 LUZON Mindanao Island 48 LUZON Phillippines excluding Mindanao Island 49 MAHE 1971 Mahe Island 50 MARCO ASTRO Salvage Islands 51 MASSAWA Fritrea Ethiopia 52 MERCHICH Morocco 53 MIDWAY ASTRO 1961 Midway Island 54 MINNA Nigeria 55 NORTH AMERICAN 1927 Alaska 56 NORTH AMERICAN 1927 Bahamas excluding San Salvador Island 57 NORTH AMERICAN 1927 Central America Belize Costa Rica El Salvador Guatemala Honduras Nicaragua 58 NORTH AMERICAN 1927 Canal Zone 59 NORTH AMERICAN 1927 Canada including Newfoundland Island 60 NORTH AMERICAN 1927 Caribbean Barbados Caicos Islands Cuba Dominican Republic Grand Cayman Jamaica Leeward Islands Turks Islands 61 NORTH AMERICAN 1927 Mean Value CONUS 62 NORTH AMERICAN 1927 Cuba 63 NORTH AMERICAN 1927 Greenland Hayes Peninsula 64 NORTH AMERICAN 1927 Mexico 65 NORTH AMERICAN 1927 San Salvador Island 66 NORTH AMERICAN 1983 Alaska Canada Central America CONUS Mexico 67 NAPARIMA BWI Trinidad and Tobago 68 NAHRWAN Masirah Island Oman
9. be enabled independently by commands to the unit Refer to the Garmin Device Interface Specification for details on how to form and parse Garmin packets over USB At the time of this printing these specs are available from the technical suppport section of our Web site http www garmin com support commProtocol html The ID of each command should be 10 decimal to signify that the record is acommand The data portion of the packet should be one of the following Function Command base 10 Position Record On 49 Position Record Off 50 Receiver Measurement Record On 110 Receiver Measurement Record Off 111 Note that the satellite data information is also enabled when the position record is enabled Records sent over RS232 begin with a delimiter byte 10 hex The second byte identifies the record type 33 hex for a position record 34 hex for a receiver measurement and 72 hex for a satellite data record The third byte indicates the size of the data The fourth byte is the first byte of data The data is then followed by a checksum byte a delimiter byte 10 hex and an end of transmission character 03 hex Additionally any DLEs 0x10 that appear between the delimeters are escaped with a second DLE There is sample code at the end of this section that will strip off the DLEs and ETXs RS232 Packet 0x10 DLE is first byte Ox Record ID single byte Ox Number of data bytes single byte dat
10. degrees true Position dilution of precision 0 to 9 rounded to nearest integer value Time dilution of precision 0 to 9 rounded to nearest integer value 4 2 12 Sensor Status Information PGRMT The Garmin Proprietary sentence PGRMT gives information concerning the status of the GPS sensor This sentence is transmitted once per minute regardless of the selected baud rate PGRMT lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt 9 gt hh lt CR gt lt LF gt Product model and software version variable length field for example GPS 18 VER 2 05 ROM checksum test P pass F fail Receiver failure discrete P pass F fail Stored data lost R retained L lost Real time clock lost R retained L lost Oscillator drift discrete P pass F excessive drift detected Data collection discrete C collecting null if not collecting GPS sensor temperature in degrees C GPS sensor configuration data R retained L lost 4 2 13 3D Velocity Information PGRMV PGRMV lt 1 gt lt 2 gt lt 3 gt hh lt CR gt lt LF gt True east velocity 514 4 to 514 4 meters second for GPS 18 PC LVC 514 44 to 514 44 for GPS 18 5Hz True north velocity 514 4 to 514 4 meters second for GPS 18 PC LVC 514 44 to 514 44 for GPS 18 5Hz Up velocity 999 9 to 999 9 meters second for GPS 18 PC LVC 999 99 to 999 99 for GPS
11. lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt 9 gt lt 10 gt lt 11 gt lt 12 gt lt 13 gt lt 14 gt hh lt CR gt lt LF gt Fix mode A automatic 2 2D exclusively host system must supply altitude 3 3D exclusively Altitude above below mean sea level 1500 0 to 18000 0 meters Earth datum index If the user datum index 96 is specified fields lt 4 gt through lt 8 gt must contain valid values Otherwise fields lt 4 gt through lt 8 gt must be null Refer to Appendix A Earth Datum List for a list of earth datum and the corresponding earth datum index User earth datum semi major axis 6360000 000 to 6380000 000 meters 001 meters resolution User earth datum inverse flattening factor 285 0 to 310 0 10 resolution User earth datum delta x earth centered coordinate 5000 0 to 5000 0 meters 1 meter resolution User earth datum delta y earth centered coordinate 5000 0 to 5000 0 meters 1 meter resolution User earth datum delta z earth centered coordinate 5000 0 to 5000 0 meters 1 meter resolution Differential mode A automatic output DGPS data when available non DGPS otherwise D differential exclusively output only differential fixes NMEA 0183 Baud rate 1 1200 2 2400 3 4800 4 9600 5 19200 6 300 7 600 8 38400 for GPS 18 5Hz only Velocity filter 0 No filter 1 Automatic filter 2 255 Filter time constant for example 10 10 second filter Measurement Pulse
12. of precision 0 5 to 99 9 Antenna height above below mean sea level 9999 9 to 99999 9 meters Geoidal height 999 9 to 9999 9 meters Null Differential GPS Null Differential Reference Station ID 4 2 5 GPS DOP and Active Satellites GSA GPGSA lt 1 gt lt 2 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt hh lt CR gt lt LF gt Mode M manual A automatic Fix type 1 not available 2 2D 3 3D PRN number 01 to 32 of satellite used in solution up to 12 transmitted leading zeros will be transmitted Position dilution of precision 0 5 to 99 9 Horizontal dilution of precision 0 5 to 99 9 Vertical dilution of precision 0 5 to 99 9 4 2 6 GPS Satellites in View GSV GPGSV lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt hh lt CR gt lt LF gt Total number of GSV sentences to be transmitted Number of current GSV sentence Total number of satellites in view 00 to 12 leading zeros will be transmitted Satellite PRN number 01 to 32 leading zeros will be transmitted Satellite elevation 00 to 90 degrees leading zeros will be transmitted Satellite azimuth 000 to 359 degrees true leading zeros will be transmitted Signal to noise ratio C No 00 to 99 dB null when not trac
13. the GPS 18 Click OK when done Comm Setup x Serial Port Baud Rate an Auto com C Manual Cancel ap Click the Connect icon 2 or select Comm gt Connect to connect to the GPS 18 Configuration file GPS Base Model Latitude Longitude Altitude Fix mode Filter mode Baud rate Dead Reckon Time HMEA Output Time Position Averaging HMEA 2 30 Mode Power Save Mode PPS mode PPS Length Phase Output Data DGPS Mode Differential mode Earth datum index SNSRCFG GPS 18 Pc LVC 00 00 000 N 000 00 000 E 300 0 meters Automatic Automatic 4800 bps 30 sec 1 sec Off off Off Normal Mode 1 Hz 100 msec oft WAAS Only Automatic WGS 84 10 11 To view the current programming of the GPS 18 select Config gt Get Configuration from GPS or press the F8 key The current programming of the GPS 18 is displayed in the window as shown on the previous page Open the Sensor Configuration Window by pressing the F6 key or selecting Config gt Sensor Configuration Place a check mark in the box next to Binary Output Data to change the GPS 18 to Garmin Mode The unit will keep this change in the programming until you change it again in the software Note Selecting Config gt Switch to Garmin Mode or pressing the F11 key only changes the unit to work in Garmin Mode until power is cycled through the unit again For a more permanent change ref
14. total of 12 X 7 bytes 84 0x54 bytes typedef struct cpo_sat_data cpo_sat_data cpo_sat_data cpo_sat_data cpo_sat_data cpo_sat_data cpo_sat_data cpo_sat_data cpo_sat_data cpo_sat_data cpo_sat_data cpo_sat_data cpo_all_sat_data The RS 232 Packet for the Satellite Record looks like 0x10 DLE is first byte 0x72 Record ID single byte 0x54 Number of data bytes single byte cpo_all_sat_data Ox 2 s complement of the arithmetic sum of the bytes between the delimiters 0x10 DLE 0x03 ETX is last byte GPS 18 Technical Specifications 190 00307 00 Rev D Page 25 The USB Packet for the Satellite Record looks like 0x72 0x54 Record ID single byte Number of data bytes single byte cpo_all_sat_data Position Record The Position Record has a record identifier of typedef struct float alt float epe float eph float epv int fix double gps_tow double lat double lon Float lon_vel Float lat_vel Float alt_vel Float msl_hght int leap_sec long grmn_days cpo_pvt_data alt epe eph epv fix gps_tow lat lon lon_vel lat_vel alt_vel msl_hght leap_sec grmn_days Ellipsoid altitude meters Est pos error meters Pos err horizontal meters Pos err vertical meters 0 no fix 1 no fix 2 2D 3 3D 4 2D differential 5 3D differential 6 and greater not defined GPS time of wee
15. with a six wire connector that is used by Garmin for testing purposes You can remove this connector without voiding your warranty see Section 1 2 Limited Warranty 2 1 GPS 18 LVC amp GPS 18 5Hz PINOUT GPS 18 Pin Color Signal Name Wire Gauge 1 Yellow Measurement Pulse Output 28 2 Red Vin 26 3 Black Ground 28 4 White Transmit Data 28 5 Black Ground 26 6 Green Receive Data 28 Table 1 GPS 18 LVC amp GPS 18 5Hz Wire Pinout 2 2 GPS 18 LVC amp GPS 18 5Hz WIRING DIAGRAMS GPS 18 LVC and a GPS 18 5Hz Computer Serial Port Interconnection 0 0 Power Source 1 Yellow Meaurement Pulse Output 2 Red Vin 3 Black GND 4 White TXD 5 Black GND Drain Wire 6 Green RCV Pin 5 Ground Pin 3 Data Out Pin 2 Data In DB 9 Serial Connector Female Pin Contacts Figure 1 Computer Serial Port Interconnection GPS 18 Technical Specifications 190 00307 00 Page 8 Rev D au GPS 18 LVC and 1A GPS 18 5Hz PDA Serial Port Interconnection a a OE Power Source 1 Yellow Meaurement Pulse Output 2 Red Vin 3 Black GND 4 White TXD 5 Black GND Drain Wire 6 Green RCV Pin 2 Data Out 4 Pin 5 Ground DB 9 Serial Connector Male Pin Contacts Figure 2 PDA Serial Port Interconnection GPS 18 LVC and rue GPS 18 5Hz Basic Interconnection
16. 103 Hu Tzu Shan 104 Indonesia 74 105 Austria 106 Potsdam 107 Taiwan modified Hu Tzu Shan 108 GDA Geocentric Datum of Australia 109 Dutch GPS 18 Technical Specifications 190 00307 00 Rev D Page 23 APPENDIX B BINARY PHASE OUTPUT FORMAT In binary phase output mode GPS 18 series products will transmit two types of packets once per second One record contains primarily post process information such as position and velocity information The second record contains receiver measurement information For the GPS 18 PC GPS 18 LVC and GPS 18 5Hz the records are sent at a default baud rate of 9600 baud 8 data bits and no parity To turn these records on for the GPS 18 PC GPS 18 LVC and GPS 18 5Hz versions use the PGRMC1 NMEA sentence as described in Section 4 GPS 18 PC GPS 18 LVC amp GPS 18 5Hz Software Interface Refer to the Garmin Device Interface Specification for details on how to form and parse Garmin packets At the time of this printing these specs are available from the technical suppport section of our Web site http www garmin com support commProtocol html Note For the GPS 18 5Hz a baud rate of 9600 is not high enough to transmit all of the packets since they are output at a 5 Hz rate You will need to change the baud rate to at least 38400 to be able to transmit all of the packets Refer to Appendix C Changing the Baud Rate in Garmin Mode for information For the GPS 18 USB the two records must
17. 256 static int in_que_ptr 0 static rx_state_type rx_state DAT void add_to_que char data tdefine DLE_BYTE 0x10 define ETX_BYTE 0x03 if rx_state DAT if data DLE_BYTE rx_state DLE else in_que in_que_ptr data else if rx_state DLE if data ETX_BYTE rx_state ETX else rx_state DAT in_que in_que_ptr data else if rx_state ETX if data DLE_BYTE rx_state DL i if in_que_ptr gt 255 in_que_ptr 0 GPS 18 Technical Specifications 190 00307 00 Page 28 Rev D APPENDIX C CHANGING THE BAUD RATE IN GARMIN MODE In certain cases you may need to change the default baud rate of your Garmin GPS receiver while in Garmin mode Follow these steps to temporarily change the baud rate Refer to the Garmin Device Interface Specification for details on how to form and parse Garmin packets At the time of this printing these specs are available from the technical suppport section of our Web site http www garmin com support commProtocol html 1 Turn off all requests by transmitting packet id IOP_RQST_DATA 0x1C data 0 16 bit unsigned integer 2 The GPS unit will respond by sending a packet with id IOP_ACK_ BYTE 0x06 3 After you receive the above packet transmit packet id IOP_BAUD_RQST_DATA 0x30 d
18. 8 5Hz Wiring and Pinouts sccsssscssssccssssscssscccsssscceseee 2 1 GPS 18 EVC amp GPS 18 5HzZ Pno enu R T ET 8 2 2 GPS 18 LVC amp GPS 18 5Hz Wiring Diagrams e eseseessesesssesereereeseststerereteesesterereessesrsreerereessee 8 3 Mechanical Characteristics amp Mounting ssesssccesooessocsssccssocessocssocesoosssoeessessseese LO 4 GPS 18 PC GPS 18 LVC amp GPS 18 5Hz Software Interface esssessssecssecssoceee 12 4 1 Received NMEA 0183 Sentences sarrerei ni ii ie ie kee eies aris ii 4 1 1 Almanac Information ALM iess eerror re otarra ao a EE Oee ae EE AEEA A ESES aa oen 4 1 2 Sensor Initialization Information PGRMD cccccccsssscessceseeeeseceeeeesecnseecsseeeseeeeseceseessseenseeeeseeeses 4 1 3 Sensor Configuration Information PGRMC ccccesceseessesseeseeseeeeceseceeeesecseeeaeeseeeseceeeeaeeeeeaeeneees 4 1 4 Additional Sensor Configuration Information PGRMC1 p5 4 1 5 Output Sentence Enable Disable PGRMO cscsssessseseeeeeeseeeeceseceeeeseesecceesecaesaeeeeeeaeseeeeaeeaeeeee 4 2 Transmitted NMEA 0183 Sentences ccccccssscescecsseceescecssecesececsaeceeeecsaeceeeeecsaesseeeceseeseeceeeeenee 15 4 2 1 Sentence rans Mission Rates zanore n e a aE A eee bet EA 15 4 2 2 Transmitted Time mere a ee e r E E e aae ies 16 4 2 3 Global Positioning System Almanac Data ALM uu eeeeesessceeeeceeceeeseeseeeceeesecsesaeesesseeacseeneeaees 16 4 2 4 Global Positioning System Fi
19. 90 X 67 80 4X 5 80 4X Figure 6 GPS 18 Flush Mount Dimensions RO 50 Dimension units mm Figure 7 GPS 18 Flush Mount Center Hole Dimensions GPS 18 Technical Specifications 190 00307 00 Rev D Page 11 4 GPS 18 PC GPS 18 LVC amp GPS 18 5Hz SOFTWARE INTERFACE The interface protocol design of the GPS 18 PC LVC and GPS 18 5Hz products is based on the National Marine Electronics Association s NMEA 0183 ASCII interface specification This standard is fully defined in NMEA 0183 Version 2 30 Copies may be obtained from NMEA www nmea org In addition to the standard NMEA 0183 sentences the GPS 18 PC LVC and GPS 18 5Hz may also be configured to transmit information over their serial interface using NMEA 0183 compliant Garmin proprietary sentences These proprietary sentences begin with the characters PGRM instead of the characters G that are typical of the standard NMEA 0183 sentences The characters P indicate that the sentence is a proprietary implementation and the characters and GRM indicate that it is Garmin s proprietary sentence The letter or letters that follow the characters PGRM uniquely identifies that particular Garmin proprietary sentence It is also possible to configure the GPS 18 PC LVC and GPS 18 5Hz to transmit binary phase data information over their serial interface See Appendix B Binary Phase Output Format for details The GPS 18 USB does n
20. Botswana Lesotho Malawi Swaziland Zaire Zambia Zimbabwe 5 ARC 1960 Kenya Tanzania 6 ASCENSION ISLAND 1958 Ascension Island 7 ASTRO BEACON E Iwo Jima Island 8 AUSTRALIAN GEODETIC 1966 Australia Tasmania Island 9 AUSTRALIAN GEODETIC 1984 Australia Tasmania Island 10 ASTRO DOS 71 4 St Helena Island 11 ASTRONOMIC STATION 1952 Marcus Island 12 ASTRO B4 SOROL ATOLL Tern Island 13 BELLEVUE IGN Efate and Erromango Islands 14 BERMUDA 1957 Bermuda Islands 15 BOGOTA OBSERVATORY Colombia 16 CAMPO INCHAUSPE Argentina 17 CANTON ASTRO 1966 Phoenix Islands 18 CAPE CANAVERAL Florida Bahama Islands 19 CAPE South Africa 20 CARTHAGE Tunisia 21 CHATHAM 1971 Chatham Island New Zealand 22 CHUA ASTRO Paraguay 23 CORREGO ALEGRE Brazil 24 DJAKARTA BATAVIA Sumatra Island Indonesia 25 DOS 1968 Gizo Island New Georgia Islands 26 EASTER ISLAND 1967 Easter Island 27 EUROPEAN 1950 Austria Belgium Denmark Finland France Germany Gibraltar Greece Italy Luxembourg Netherlands Norway Portugal Spain Sweden Switzerland 28 EUROPEAN 1979 Austria Finland Netherlands Norway Spain Sweden Switzerland 29 FINLAND HAYFORD 1910 Finland 30 GANDAJIKA BASE Republic of Maldives 31 GEODETIC DATUM 1949 New Zealand 32 ORDNANCE SURVEY OF GREAT BRITAIN 1936 England Isle of Man Scotland Shetland Islands Wales 33 GUAM 1963 Guam Island GPS 18 Technical Specifications 190 00307 00 Rev D Page 21 34
21. CONFIGURATION SOFTWARE SNSRCFG configures the GPS sensors based on user selected parameters Some application features include the ability to download GPS sensor configuration maintain different configurations in files and perform GPS sensor configurations quickly with the use of one function key This section provides a brief overview of the Sensor Configuration Software Refer to this section when using the software to configure your Garmin sensor Downloading the Sensor Configuration Software The Garmin Sensor Configuration Software SNSRCFG exe is available from the Garmin Web site To download the software start at http www garmin com oem select the GPS 18 and then select Software Updates The Garmin Sensor Configuration Software SNSRCFG exe is included in the software update download Base Model Selecting a Model GPS 10 After opening the program snsrcfg exe the following heh GAN C GPS 15 15U screen appears Select the radio button next to the type of sensor are you C GPS 15H L 7 j connecting to C GPS 164 Garmin sensor you are configuring GPS 16 17 GPS 17N Connecting to the Sensor C GPS 18PC LVC After selecting the type of sensor the following window GPS18 5Hz opens This is the Main Interface Screen for the program GPS 25 35 36 To configure your sensor you must first connect to the sensor 1 Select Config gt Switch to NMEA Mode or press the F10 Comm Setup x key Serial Port B
22. E NER ETENEE 5 FSAA Case Material iis ecesseccteacsteceasedesclteclcssaaveeaces a a EEE E EREE 5 1 5 1 5 Cable Length an5 1 5 2 Electrical Characteristics swa 1 521 TInp t Voltit vssss csbeicsccenesdecstvesdeveoantestvsvepseesshaisesesssedasessuarage A AA R 5 1 STAAR EA Current eE E E E E E E Boa oh eee a eat esha ete an cee ease 5 1 5 2 3 CMOS Serial Ou tput L velirisnesn ennan voids eet a nade te anions 5 1 5 2 4 GPS Receiver Sensitivity isasi irreais a iee E E E aE a AEE 6 1 5 3 Environmental Characteristics seese aineen ea ee ea e e a eaea 6 1 5 4 GPS Eaa OTET OTIT AE E E TA T E ON PE EA E ee 6 ESAT Receiver aaie O EO EO A E AEE eases ees 6 1542 Acquisition Times asinen a e n EE E R EE E AERA AR EER 6 152423 Update Rate tevcecc tse sesecsessieendattoesoeessseeshes leveopest cae sdeevapecsesecedepereee a ri TE E E EE 6 SR e ACCUTACY AER EE EE depiesenees teste dub eeveueen dad ch Seveesstessbebeouugdergetevted 6 1 5 5 ENEA M e VE 3 5 Fas AEE T T EESE AEEA T 7 1 5 5 1 GPS 18 Electrical Characteristics ccescseccessessceseesececceseceeeeseccceseceeeesecseeeaeeneeeaeceeeaeenes 7 1 5 5 2 Garmin Interface and Garmin USB Protocol s essesseeessesessessessesersessestsessessesrsresessrsrssese 7 1 5 5 3 GPS 18 PC GPS 18 LVC amp GPS 18 5Hz Protocols eeeeseeeeeeeecneesesseeseeecseseeeneees 7 1 5 5 4 Measurement Pulse Output GPS 18 LVC amp GPS 18 5Hz only 7 2 GPS 18 LVC amp GPS 1
23. HER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY INCLUDING ANY LIABILITY ARISING UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE STATUTORY OR OTHERWISE THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS WHICH MAY VARY FROM STATE TO STATE IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES WHETHER RESULTING FROM THE USE MISUSE OR INABILITY TO USE THIS PRODUCT OR FROM DEFECTS IN THE PRODUCT Some states do not allow the exclusion of incidental or consequential damages so the above limitations may not apply to you Garmin retains the exclusive right to repair or replace the unit or software or offer a full refund of the purchase price at its sole discretion SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY To obtain warranty service contact your local Garmin authorized dealer or call Garmin Product Support at one of the numbers shown below for shipping instructions and an RMA tracking number The unit should be securely packed with the tracking number clearly written on the outside of the package The unit should then be sent freight charges prepaid to any Garmin warranty service station A copy of the original sales receipt is required as the proof of purchase for warranty repairs Garmin International Inc 1200 East 151 Street Olathe Kansas 66062 U S A Tel 913 397 8200 or 800 800 1020 Fax 913 397 8282 Garmin Europe Ltd U
24. Output 1 Disabled 2 Enabled Measurement Pulse Output pulse length n 1 20 ms For 18 LVC PC n 0 through 48 max 980 ms For GPS 18 5Hz n 0 through 8 max 180 ms Example n 4 corresponds to a 100 ms wide pulse Dead reckoning valid time 1 to 30 sec for the GPS 18 PC LVC or 0 2 to 30 0 sec for the GPS 18 5Hz All configuration changes take effect after receipt of a valid value except baud rate and Measurement Pulse Output mode Baud rate and Measurement Pulse Output mode changes take effect on the next power cycle or an external reset event GPS 18 Technical Specifications 190 00307 00 Rev D Page 13 4 1 4 Additional Sensor Configuration Information PGRMC1 The PGRMCI1 sentence provides additional information used to configure the GPS sensor operation Configuration parameters are stored in non volatile memory and retained between power cycles The GPS sensor will echo this sentence upon its receipt if no errors are detected If an error is detected the echoed PGRMCI sentence will contain the current default values Current default values can also be obtained by sending PGRMCIE to the GPS sensor PGRMC1 lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt 9 gt lt 10 gt lt 11 gt lt 12 gt lt 13 gt hh lt CR gt lt LF gt NMEA 0183 output time 1 to 900 sec Not applicable to GPS 18 5Hz which always outputs data at 5 Hz 200 ms Bin
25. PS 18 TEHN CAL SPEC H CATIONS cJe lt _ lt a am GARMIN Garmin International Inc 1200 E 151 Street Olathe KS 66062 USA 190 00307 00 Revision D June 2005 GPS 18 Technical Specifications 190 00307 00 Rev D Copyright 2004 2005 Garmin Ltd or its subsidiaries All Rights Reserved Except as expressly provided below no part of this manual may be reproduced copied transmitted disseminated downloaded or stored in any storage medium for any purpose without the express prior written consent of Garmin Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto provided that such electronic or printed copy of this manual or revision must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited Information in this document is subject to change without notice Garmin reserves the right to change or improve its products and to make changes in the content without obligation to notify any person or organization of such changes or improvements Garmin International Inc 1200 East 151 st Street Olathe Kansas 66062 U S A Tel 913 397 8200 or 800 800 1020 Fax 913 397 8282 Garmin Europe L
26. Send the GPS sensor a PGRMO GPALM 1 command to initiate almanac transmission Upon receipt of this command the GPS sensor will transmit available almanac information on GPALM sentences During the transmission of almanac sentences other NMEA 0183 data output is suspended temporarily GPALM lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt 9 gt lt 10 gt lt 11 gt lt 12 gt lt 13 gt lt 14 gt lt 15 gt hh lt CR gt lt LF gt lt field information gt can be found in Section 4 1 1 Almanac Information ALM GPS 18 Technical Specifications 190 00307 00 Rev D Page 16 4 2 4 Global Positioning System Fix Data GGA GPGGA lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt 9 gt M lt 10 gt M lt 11 gt lt 12 gt hh lt CR gt lt LF gt UTC time of position fix hhmmss format for GPS 18 PC or LVC hhmmss s format for GPS 18 5Hz Latitude ddmm mmmm format for GPS 18 PC LVC ddmm mmmmm for GPS 18 5Hz leading zeros will be transmitted Latitude hemisphere N or S Longitude dddmm mmmm format for GPS 18 PC LVC dddmm mmmmm for GPS 18 5Hz leading zeros will be transmitted Longitude hemisphere E or W GPS quality indication 0 fix not available 1 Non differential GPS fix available 2 Differential GPS WAAS fix available 6 Estimated Number of satellites in use 00 to 12 leading zeros will be transmitted Horizontal dilution
27. a bytes See descriptions below Ox 2 s complement of the arithmetic sum of the bytes between the delimiters 0x10 DLE 0x03 ETX is last byte USB packets contain only the record ID size and data payload Refer to the Garmin Device Interface Specification for details on how to form and parse Garmin USB packets USB Packet Ox Record ID single byte Ox Number of data bytes single byte data bytes See descriptions below The data bytes of each packet contain the record specified by the record ID A description of each record follows GPS 18 Technical Specifications 190 00307 00 Rev D Page 24 Satellite Data Record The satellite data has a record ID of 0x72 with 84 0x54 data bytes The data bytes contain the data for the 12 channels as described below For each satellite the following data is available typedef struct uint8 svid space vehicle identification 1 32 and 33 64 for WAAS uintl6 snr signal to noise ratio uint8 elev satellite elevation in degrees uintl6 azmth satellite azimuth in degrees uint8 status status bit field cpo_sat_data The status bit field represents a set of booleans described below Meaning when bit is one 1 The unit has ephemeris data for the specified satellite The unit has a differential correction for the specified satellite The unit is using this satellite in the solution This pattern is repeated for all 12 channels for a
28. al Specifications 190 00307 00 Rev D Page 5 1 5 2 4 GPS Receiver Sensitivity 165 dBW minimum 1 5 3 Environmental Characteristics Operating Temperature 30 C to 80 C Storage Temperature 40 C to 90 C 1 5 4 GPS Performance 1 5 4 1 Receiver WAAS enabled 12 parallel channel GPS receiver continuously tracks and uses up to 12 satellites up to 11 with Measurement Pulse Output active to compute and update your position 1 5 4 2 Acquisition Times Reacquisition Less than 2 seconds Warm Approx 15 seconds all data known Cold Approx 45 seconds initial position time and almanac known ephemeris unknown AutoLocate 5 minutes almanac known initial position and time unknown SkySearch 5 minutes no data known 1 5 4 3 Update Rate GPS 18 USB PC and LVC 1 record per second GPS 18 5Hz 5 records per second 1 5 4 4 Accuracy GPS Standard Positioning Service SPS Position lt 15 meters 95 typical Velocity 0 1 knot RMS steady state WAAS Position lt 3 meters 95 typical Velocity 0 1 knot RMS steady state Measurement Pulse Output Time 1 microsecond at rising edge of the pulse Dynamics 999 knots velocity only limited at altitude greater than 60 000 feet 6g dynamics GPS 18 Technical Specifications 190 00307 00 Rev D Page 6 1 5 5 Interfaces 1 5 5 1 GPS 18 Electrical Characteristics e GPS 18 USB USB 2 0 full speed protocol compatible as well as USB 1 1 full speed protocol e
29. articular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help The GPS 18 does not contain any user serviceable parts Unauthorized repairs or modifications could result in permanent damage to the equipment and void your warranty and your authority to operate this device under Part 15 regulations GPS 18 Technical Specifications 190 00307 00 Rev D Page 1 1 2 LIMITED WARRANTY This Garmin product is warranted to be free from defects in materials or workmanship for one year from the date of purchase Within this period 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 charge to the customer for parts or labor provided that the customer shall be responsible for any transportation cost This warranty does not cover failures due to abuse misuse accident or unauthorized alteration or repairs THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OT
30. ary Phase Output Data 1 Off 2 On Automatic Position Averaging when Stopped Off 2 On No Effect DGPS beacon frequency 0 0 283 5 to 325 0 kHz in 0 5 kHz steps No Effect DGPS beacon bit rate 0 25 50 100 or 200 bps No Effect DGPS beacon scanning 1 Off 2 On NMEA 0183 version 2 30 mode indicator 1 Off 2 On DGPS WAAS mode W WAAS Enabled N WAAS Disabled Power Save Mode P Power Save mode N Normal Adaptive Transmission Enabled 1 Off 2 On Auto Power Off 1 Off 2 On Power On with External Charger 1 Off 2 On Measurement Pulse Output Auto Off Mode 1 Off 2 On Configuration changes take effect immediately with the exception of Binary Phase Output Data which takes effect on the next power cycle or a reset event Send the sentence PGRMI R to command a reset refer to Section 4 1 2 Sensor Initialization Information PGRMI If the GPS sensor is in the Binary data mode it is necessary to send the following eight byte data stream to temporarily change the data format to NMEA 0183 Then follow by sending a PGRMCI1 sentence that turns off the Binary Phase Output Data format 10 0A 02 26 00 CE 10 03 Hexadecimal 4 1 5 Output Sentence Enable Disable PGRMO The PGRMO sentence provides the ability to enable and disable specific output sentences The following sentences are enabled at the factory for the GPS 18 PC and LVC
31. ata baud rate to change to 32 bit unsigned integer for example 38400 4 The GPS unit will respond by sending a packet id IOP_BAUD_ACPT_DATA 0x31 data highest acceptable baud rate closest to what was requested 32 bit unsigned integer for example 38361 decimal 5 Determine the actual baud rate value from the data sent in step 4 This value will be within 5 of the actual baud rate For example the GPS unit might send a baud rate of 38361 which correlates to a baud rate of 38400 6 Ifthe baud rate in step 5 is acceptable transmit packet id IOP_ACK_BYTE 0x06 data IOP_BAUD_ACPT_DATA 0x31 7 Sleep for a small amount of time about 100 milliseconds to make sure the packet in 6 was successfully transmitted to the GPS unit 8 Close the current connection to the GPS unit and immediately open a new connection with the new baud rate obtained in step 5 9 Immediately after establishing a connection transmit packet id IOP_CMND_DATA 0x0A data IOP_ACK_PING 0x3A 10 The GPS will respond by sending a packet id IOP_ACK_BYTE 0x06 data IOP_CMND_DATA 0x0A 11 After you receive the above packet transmit the same packet in step 9 again id IOP_CMND_DATA 0x0A data IOP_ACK_PING 0x3A 12 The GPS will respond again with the same packet in step 10 id IOP_ACK_BYTE 0x06 data IOP_CMND_DATA 0x0A 13 The baud rate has been successfully changed upon receiving the above packet If the GPS unit
32. aud Rate f Y Auto 2 Select Comm gt Setup to open the Comm Setup Window C Manual Cancel 3 Select the Serial Port to which the sensor is connected Select Auto to have the program automatically determine the Baud Rate or select Manual to manually select the Baud Rate of the GPS 18 Click OK when wa SNSRCFG GARMIN Sensor Configuration Software ile Comm Config View Help eml elre El S 2 8 x n done 4 Click the Connect icon Configuration file SNSRCFG ap s or select Comm GPS Base Model GPS 18 PC LVC Selected Connect Latitude 00 00 000 N Sentences 5 Tovi h Longitude 000 00 000 E GPGGA To view t S current Altitude 300 0 meters GPGSA programming of the GPGSV sensor select Config gt Fix mode Automatic GPRMC Filter mode Automatic PGRMB Get Configuration from Baud rate 4600 bps PGRME GPS or press the F8 key Dead Reckon Time 30 sec PGRNT The current programming of the sensor is displayed in the window shown to the right HMEA Output Time Position Averaging HMEA 2 30 Mode Power Save Mode PPS mode PPS Length Phase Output Data DGPS Mode Differential mode Earth datum index GPS 18 Technical Specifications 190 00307 00 Page 32 1 sec oft Off Off Normal Mode 1 Hz 100 msec oft WAAS Only Automatic WGS 84 File Menu The File Menu allows you to open save and print sensor configurations The items in the File Menu work like
33. ble the Serial BallPoint mouse in the Device Manager Of course this solution assumes that you do not need to use a Serial BallPoint mouse with your computer When the wild mouse problem occurs follow the steps below 1 Unplug the DB9 connector 2 Right click the My Computer icon on your desktop and select Properties to open Device Manager 3 Go to the hardware tab of the resulting pop up window and click on the Device Manager button 4 Right click on Serial BallPoint Mouse and choose the option to Disable NOT uninstall this device Solution 2 Do not plug the DB9 connector into the computer until the computer is turned on and the operating system is completely booted up and running Every time you use the GPS 18 PC LVC you will need to start the computer and operating system before making the connection between the GPS 18 PC and the computer This solution usually works on Windows 2000 and Windows XP computers Solution 3 Change the default output of the GPS 18 PC LVC so that it does not automatically send NMEA 0183 data to the computer change the default configuration to enable Phase Output Data Use the Garmin Sensor Configuration Software named SNSRCFG EXE provided on the Web site to enable Phase Output Data SNSRCFG EXE is included with the latest GPS 18 firmware available at http www garmin com support agree jsp product 010 00321 05 Please note that by enabling Phase Output Data the device will no longe
34. ch to NMEA Mode F10 Switches the unit to NMEA Mode The sensor must be in NMEA Mode when connected to this software Switch to Garmin Mode F11 Switches the unit to Garmin Mode Update Software F12 After you have downloaded a new software version for the sensor you can update the sensor with the new software Select Update Software and then select the file using the Open dialog box You must locate both the rgn file and the updater exe file View Menu The View Menu allows you to view the NMEA sentences transmitted by the sensor You can also customize how the program looks by showing and hiding the Toolbar and Status Bar Help Menu The Help Menu displays the software version and copyright information For the latest free software updates excluding map data throughout the life of your Garmin products visit the Garmin Web site at www garmin com GARMIN Copyright 2004 2005 Garmin Ltd or its subsidiaries iy ja s Garmin International Inc 1200 East 151 Street Olathe Kansas 66062 U S A Garmin Europe Ltd Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey SO51 9DL U K Garmin Corporation No 68 Jangshu 2 Road Shijr Taipei County Taiwan www garmin com Part Number 190 00307 00 Rev D
35. de is required for GPS 18 series product software updates GPS 18 Technical Specifications 190 00307 00 Rev D Page 14 4 2 TRANSMITTED NMEA 0183 SENTENCES The subsequent paragraphs define the sentences that can be transmitted by the GPS 18 PC and LVC 4 2 1 Sentence Transmission Rate Sentences are transmitted with respect to the user selected baud rate The GPS sensor will transmit each sentence except where noted in particular transmitted sentence descriptions at a periodic rate based on the user selected baud rate and user selected output sentences The GPS sensor will transmit the selected sentences contiguously The length of the transmission can be determined by the following equation and Tables 2 and 3 total characters to be transmitted length of transmission characters transmitted per second Sentence Output by Default Maximum Characters Jv Jv v PC and LVC only v PC and LVC only 18 5Hz only v PC and LVC only Once per minute Table 2 NMEA 0183 Output Sentence Order and Size Baud Characters per Second Table 3 Characters per Second for Available Baud Rates The maximum number of fields allowed in a single sentence is 82 characters including delimiters Values in the table include the sentence start delimiter character and the termination delimiter lt CR gt lt LF gt Fo
36. does not receive these two IOP_CMND_DATA packets within two seconds it will reset its baud rate to 9600 GPS 18 Technical Specifications 190 00307 00 Rev D Page 29 APPENDIX D GPS 18 PC LVC 18 5Hz amp WINDOWS SERIAL MOUSE ISSUE Problem It is possible for Windows to incorrectly interpret the NMEA 0183 output of the GPS 18 PC as the output of a Microsoft Serial BallPoint Mouse When that happens Windows loads drivers for the Serial BallPoint Mouse This causes the cursor to move erratically about the display clicking right clicking double clicking dragging and dropping displayed items as it goes On Windows 2000 and Windows XP you may not experience the problem if you wait until after the computer is booted before connecting the GPS 18 PC to the serial communications port This problem is not specific to the GPS 18 PC Any NMEA 0183 device connected to a Windows computer s serial port is likely to cause this problem Below are several possible solutions to this problem Note If your GPS 18 PC came with Garmin nRoute Navigation Software you will not have this problem the unit is programmed to produce data according to the binary format that is described in Appendix B Binary Phase Output Format If you wish to use a different navigation software application with your GPS 18 PC you will need to de select the Phase Output Data option that is discussed in Solution 3 below Solution 1 The easiest solution is to disa
37. e satellite acquisition process If there are no errors in the sentence it will be echoed upon receipt If an error is detected the echoed PGRMI sentence will contain the current default values Current PGRMI defaults with the exception of the Receiver Command which is a command rather than a mode can also be obtained by sending PGRMIE to the GPS sensor PGRMI lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt hh lt CR gt lt LF gt Latitude ddmm mmm format for GPS 18 PC LVC ddmm mmmmm format for GPS 18 5Hz leading zeros must be transmitted Latitude hemisphere N or S Longitude ddmm mmm format for GPS 18 PC LVC ddmm mmmmm format for GPS 18 5Hz leading zeros must be transmitted Longitude hemisphere E or W Current UTC date ddmmyy format Current UTC time hhmmss format for GPS 18 PC LVC hhmmss s format for GPS 18 5Hz Receiver Command A Auto Locate R Unit Reset 4 1 3 Sensor Configuration Information PGRMC The PGRMC sentence provides information used to configure the GPS sensor s operation Configuration parameters are stored in non volatile memory and retained between power cycles The GPS sensor will echo this sentence upon its receipt if no errors are detected If an error is detected the echoed PGRMC sentence will contain the current default values Current default values can also be obtained by sending PGRMCE to the GPS sensor PGRMC lt 1 gt lt 2 gt lt 3 gt
38. er to step 8 above Click OK When you are ready to upload the changes into the GPS 18 select Config gt Send Configuration to GPS or press the F9 key The new configuration is then loaded into the GPS 18 You may disconnect and close the software when finished The software configuration can also be saved for future reference was 84 x Earth Datum Latitude fo R jo o g Longtude o Jo CE CW 300 Altitude meter Fix Mode Automatic Differential Mode Baud Rate Automatic 19200 Velocity Filter Automatic x IV Pulse Per Second J Position Averaging J Phase Output Data D NMEA 2 30 Mode I PPS Auto Off Mode Dead Reckon NMEA output Valid Time time PPS Length Msc H wy DGPS Mode waas Only z J Adaptive Transmission T Auto Power Gn F die Link Power Of Reset Unit Set Autolocate Tl Power Save Mode Reset Noriol Test Mode Selected Sentences GPGGA GPGSA GPGSV GPRHMC PGRMB PGRME PGRMT x m Base Model GPS 10 GPS 15 750 GESISH E GPS 164 GPRS IE 7 GES ITN GPS TERE LYE GPS 25 35 36 GPS 18 5Hz Ceeeeeeee Beacon staton Freq Bit Rate fi fo J Auto Tone on Loss Cancel Refer to Appendix E Sensor Configuration Software for complete information about downloading the Sensor Configuration Software application GPS 18 Technical Specifications 190 00307 00 Page 31 Rev D APPENDIX E SENSOR
39. ines in National Institute of Standards and Technology Special Publication 432 Revised 1990 for sale by the Superintendent of Documents U S Government Printing Office Washington D C 20402 U S A When a positive leap second is required one second is inserted at the beginning of the first hour Oh Om Os of the day that the positive leap is occurring The minute containing the leap second is 61 seconds long The GPS sensor would have transmitted this information for the leap second added December 31 1998 as follows GPRMC 235959 A 3851 3651 N 09447 9382 W 000 0 221 9 071103 003 3 E 69 GPRMC 000000 A 385 1 365 1 N 09447 9382 W 000 0 221 9 081 103 003 3 E 67 GPRMC 000000 A 385 1 365 1 N 09447 9382 W 000 0 221 9 08 1 103 003 3 E 67 GPRMC 000001 A 385 1 365 1 N 09447 9382 W 000 0 221 9 08 1 103 003 3 E 66 If a negative leap second should be required one second will be deleted at the end of some UTC month The minute containing the leap second will be only 59 seconds long In this case the GPS sensor will not transmit the time of day Oh Om Os the zero second for the day from which the leap second is removed GPRMC 235959 A 385 1 3650 N 09447 9373 W 000 0 000 0 111103 003 3 E 69 GPRMC 000001 A 385 1 3650 N 09447 9373 W 000 0 000 0 121103 003 3 E 6A GPRMC 000002 A 3851 3650 N 09447 9373 W 000 0 000 0 121103 003 3 E 69 4 2 3 Global Positioning System Almanac Data ALM Almanac sentences are not normally transmitted
40. ire Pinout ee ccesecseesecneeeeceseeeeseceeesecseesecsaeeeesaecaseeeeaecateaeenees 8 Figure 1 Computer Serial Port Interconnection eeeeessescssecsseseceeesecsseeecsaecssesecseeseesaeeeesaecasesesneeseenaeeees 8 Figure 2 PDA Serial Port Interconnection ceeesescssesseeecssecscesecseesecnaecessecasesecseesesnasenesaecaeeseeaecaeeseeners 9 Figure 3 Basic NMEA Device Interconnection cceecesesssssecseseecsssescssecssesecneeseesecueesecnaeeecsaecateseenesseenaeeees 9 Figure 4a GPS 18 Bottom Case Dimensions Under Mold 0 0 0 ceceesesesssesecseeseceeeeeceaeeecsaecaeesecneeseenaeeeeeas 10 Figure 4b GPS 18 Bottom Case Outside of Casing oo cceescsesscsseseceseseeesecseesecsecaeesecneeeesaeeeesaecaeeseeneeeas 10 Figure 5 GPS 18 Suction Cup Mount Center Hole Dimensions ceeeescseescseeseceseeeeesecaeesecneeseenaeeeens 11 Figure 6 GPS 18 Flush Mount Dimensions cceseecsssesssesecseeseceseeeceaeceeesecseesccueeseeseeneeseesaseeesaecaeesaeeeeegs 11 Figure 7 GPS 18 Flush Mount Center Hole Dimensions eesessecseeesceeeeeeeceeeeceseeecaecaeesecnerseenaeseeeas 11 Table 2 NMEA 0183 Output Sentence Order and Size eee cee ceecseeceeeeeeeeeeeeeeceesecesecssecaecaecsaeeaee 15 Table 3 Characters per Second for Available Baud Rates seeeesccsseeecesecseeeecneeeecseeeesaecaeesecneeatenesneeens 15 GPS 18 Technical Specifications 190 00307 00 Rev D Page iii 1 INTRODUCTION 1 1 CAUTIONS CAUTION The GPS syste
41. k sec Latitude radians Longitude radians Longitude velocity meters second Latitude velocity meters second Altitude velocity meters second Mean sea level height meters UTC leap seconds Garmin days days since December 31 1989 GPS 18 Technical Specifications 190 00307 00 Page 26 Rev D Receiver Measurement Record typedef s nsig nsig har nsig har char qasaagcacsc cpo_rcv_sv_data ouble truct ned long ned int ned char typedef struct double int cpo_rcv_sv_data cpo_rcv_data rcvr_tow rcvr_wn cycles pr phase slp_dtct snr_dbhz svid numbers valid GPS 18 Technical Specifications 190 00307 00 cycles pr phase slp_dtct snr_dbhz svid valid rcevr_tow rcvr_wn sv 12 Receiver time of week seconds Receiver week number Number of accumulated cycles Pseudorange meters To convert to 0 to 359 999 multiply by 360 0 and divide by 2048 0 0 no cycle slip detected non zero cycle slip detected Signal strength db Hz Satellite number 0 to 31 119 to 138 for WAAS Note add 1 to offset to current svid 0 information not valid non zero information valid Page 27 Rev D DLE and ETX bytes Sample C code to receive the two records should filter DLE and ETX bytes as described below typedef enum DAT DLE ETX rx_state_type Declare and initialize static variables static char in_que
42. king leading zeros will be transmitted NOTE Items lt 4 gt lt 5 gt lt 6 gt and lt 7 gt repeat for each satellite in view to a maximum of four 4 satellites per sentence Additional satellites in view information must be sent in subsequent bursts of NMEA 0183 data These fields will be null if unused GPS 18 Technical Specifications 190 00307 00 Rev D Page 17 4 2 7 Recommended Minimum Specific GPS TRANSIT Data RMC GPRMC lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt 9 gt lt 10 gt lt 11 gt lt 12 gt hh lt CR gt lt LF gt UTC time of position fix hhmmss format for GPS 18 PC LVC hhmmss s format for GPS 18 5Hz Status A Valid position V NAV receiver warning Latitude ddmm mmm format for GPS 18 PC LVC ddmm mmmmm format for GPS 18 5Hz leading zeros must be transmitted Latitude hemisphere N or S Longitude ddmm mmm format for GPS 18 PC LVC ddmm mmmmm format for GPS 18 5Hz leading zeros must be transmitted Longitude hemisphere E or W Speed over ground GPS 18 PC and LVC 000 0 to 999 9 knots GPS 18 5Hz 000 00 to 999 99 knots leading zeros will be transmitted Course over ground 000 0 to 359 9 degrees true leading zeros will be transmitted UTC date of position fix ddmmyy format Magnetic variation 000 0 to 180 0 degrees leading zeros will be transmitted Magnetic variation direction E or W westerly variation adds to true course Mode indicator only o
43. ld and valid fields up to that point will be acted on by the sensor 4 1 1 Almanac Information ALM The GPALM sentence can be used to initialize the GPS sensor s stored almanac information in the unlikely event of non volatile memory loss or after storing longer than six months without tracking GPS satellites GPALM lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt 9 gt lt 10 gt lt 11 gt lt 12 gt lt 13 gt lt 14 gt lt 15 gt hh lt CR gt lt LF gt Total number of ALM sentences to be transmitted by the GPS sensor during almanac download This field can be null or any number when sending almanac to the GPS sensor Number of current ALM sentence This field can be null or any number when sending almanac to the GPS sensor Satellite PRN number 01 to 32 GPS week number SV health bits 17 24 of each almanac page Eccentricity Almanac reference time Inclination angle Rate of right ascension Root of semi major axis Omega argument of perigee Longitude of ascension node Mean anomaly af0 clock parameter afl clock parameter GPS 18 Technical Specifications 190 00307 00 Rev D Page 12 4 1 2 Sensor Initialization Information PGRMI The PGRMI sentence provides information used to initialize the GPS sensor s set position and time used for satellite acquisition Receipt of this sentence by the GPS sensor causes the software to restart th
44. lows initialization of information such as expected position date time earth datum and differential mode See Section 4 1 Received NMEA 0183 Sentences for format descriptions e Configurable for binary data output including GPS carrier phase data 1 5 5 4 Measurement Pulse Output GPS 18 LVC amp GPS 18 5Hz only e GPS 18 LVC 1 Hz pulse with programmable width configurable in 20 ms increments form 20 ms to 980 ms See Section 4 1 3 Sensor Configuration Information PGRMC for details about configuring the Measurement Pulse Output or PPS feature e GPS 18 5Hz 5 Hz pulse synchronized with the time of fix One of the five pulses will align with the UTC second boundary The pulse width is programmable from 20 ms to 180 ms The PGRMC sentence will indicate which pulse is at the top of the second See Section 4 1 3 Sensor Configuration Information PGRMC for details about configuring the Measurement Pulse Output or PPS feature e us accuracy for all conditions in which the GPS 18 LVC or GPS 18 5Hz has reported a valid and accurate position fix for at least the previous 4 seconds GPS 18 Technical Specifications 190 00307 00 Rev D Page 7 2 GPS 18 LVC amp GPS 18 5Hz WIRING AND PINOUTS The GPS 18 LVC 18 5Hz interfaces to a serial port The unit accepts TIA 232 F RS 232 level inputs and transmits voltage levels from ground to the input voltage TIA 232 F RS 232 polarity The GPS 18 LVC 18 5Hz wires are terminated
45. m is operated by the government of the United States which is solely responsible for its accuracy and maintenance Although the GPS 18 is a precision electronic NAVigation AID NAVAID any NAVAID can be misused or misinterpreted and therefore become unsafe Use these products at your own risk To reduce the risk carefully review and understand all aspects of these Technical Specifications before using the GPS 18 When in actual use carefully compare indications from the GPS to all available navigation sources including the information from other NAVAIDs visual sightings charts etc For safety always resolve any discrepancies before continuing navigation FCC Compliance The GPS 18 complies with Part 15 of the FCC interference limits for Class B digital devices FOR HOME OR OFFICE USE These limits are designed to provide reasonable protection against harmful interference in a residential installation and are more stringent than outdoor requirements Operation of this device is subject to the following conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a p
46. most Windows based programs Comm Menu The Comm Communication Menu allows you to set the port number baud rate and then connect and disconnect from the sensor Setup Opens the Comm Setup Window shown to the left Select Comm Setup x Serial Port Baud Rate m Auto com x Manual Cancel the Serial Port to which the sensor is connected from the drop down list Then select Auto the program determines the baud rate on its own or Manual you then enter the baud rate for the Baud Rate entry Connect Select Connect to connect to the sensor to change or view the configuration Disconnect Select Disconnect to disconnect from the sensor Config Menu The Config Configuration Menu allows you configure the sensor as it is connected Sensor Configuration F6 Opens the Sensor Configuration Window shown to the right Many of the fields in this window should be left alone Please refer to the beginning of this manual for clarification about some of these fields For the most part this window is used to enter a new Latitude Longitude and Altitude for the sensor This is especially helpful when you are programming the sensor for use in a particular geographic location Resetting the Unit Reset Unit performs a reset on the unit much like cycling the power Resetting the non volatile memory Reset NonVol will clear all of the data from the non volatile memory NMEA Sentence Selections F7 Di
47. nit 5 The Quadrangle Abbey Park Industrial Estate Romsey SO51 9DL U K Tel 44 0870 8501241 Fax 44 0870 8501251 GPS 18 Technical Specifications 190 00307 00 Rev D Page 2 Overview The GPS 18 series products include an embedded receiver and an antenna Based on the proven technology found in other Garmin 12 channel GPS receivers the GPS 18 tracks up to 12 satellites at a time while providing fast time to first fix precise navigation updates five times per second for the GPS 18 5Hz and once per second for the GPS 18 USB 18 PC and 18 LVC and low power consumption This generation of GPS sensors adds the capability of FAA Wide Area Augmentation System WAAS differential GPS The GPS 18 s far reaching capability meets the sensitivity requirements of land navigation as well as the dynamics requirements of high performance aircraft The GPS 18 design uses the latest technology and high level circuit integration to achieve superior performance while minimizing space and power requirements All critical components of the system including the RF IF receiver hardware and the digital baseband are designed and manufactured by Garmin to ensure the quality and capability of the GPS The hardware capability combined with software intelligence makes the GPS 18 easy to integrate and use The GPS 18 series products are designed to withstand rugged operating conditions and are waterproof to IEC 60529 IPX7 immersion in 1 meter of water for 30 min
48. ons available through Web site download Non volatile memory does not require battery backup e Onboard rechargeable backup battery to maintain the real time clock for up to 3 weeks e Configurable parameters include expected position current time and date preferred position fix type 2D 3D or automatic and velocity filter time constant none automatic or your choice between 2 and 255 seconds e Waterproof design allows continuous exposure to the prevailing weather conditions at most locations GPS 18 Technical Specifications 190 00307 00 Rev D Page 3 1 4 GPS 18 SERIES There are several different versions of GPS 18 available Refer below for a list of the three major divisions of the GPS 18 Series 1 4 1 GPS 18 USB The GPS 18 USB interfaces to a computer with an available USB port Drivers are available for use on Windows computers Macintosh and Linux drivers are not available After the drivers are loaded the device appears to the Windows operating system as a USB connected device and appears in Device Manager as a Garmin USB Device 1 4 2 GPS 18 PC The GPS 18 PC interfaces to a serial port of a computer via a DB 9 connector and receives power through a 12 volt cigarette lighter adapter The unit accepts TIA 232 F RS 232 level inputs and transmits voltage levels that swing from zero V ground to 5 V TIA 232 F RS 232 polarity The GPS 18 PC can cause an issue with Windows operating systems if the DB9 connecto
49. ons in which the receiver has reported a valid and accurate position for at least the previous 4 seconds The NMEA 0183 sentences that follow each rising edge of the Measurement Pulse Output signal tell when and where you were at that previous rising edge of the Measurement Pulse Output signal beginning with the GPRMC sentence as the lead sentence in any particular NMEA 0183 record Regardless of the selected baud rate the information transmitted by the GPS 18 5Hz is referenced to the preceding five times per second output pulse The accuracy of the five pulse per second output is maintained only while the GPS 18 5Hz can compute a valid position fix To obtain the most accurate results the five pulse per second output should be calibrated against a local time reference to compensate for cable and internal receiver delays and the local time bias GPS 18 Technical Specifications 190 00307 00 Rev D Page 20 The default pulse width is 100 ms however it may be programmed in 20 ms increments between 20 ms and 180 ms as described in PGRMC Section 4 1 2 Sensor Initialization Information PGRMD field lt 13 gt APPENDIX A EARTH DATUM LIST The following is a list of the Garmin GPS 18 Earth datum indices and the corresponding earth datum name including the area 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
50. ot transmit NMEA sentences It transmits using the Garmin USB interface The Garmin USB interface is discussed in the Garmin Device Interface Specification located on the Garmin Web site at http www garmin com support commProtocol html You can configure the GPS 18 USB to transmit binary phase data information over the USB interface Refer to Appendix B Binary Phase Output Format The following sections describe the NMEA 0183 data format of each sentence transmitted and received by the GPS 18 PC LVC and GPS 18 5Hz products 4 1 RECEIVED NMEA 0183 SENTENCES The following paragraphs define the sentences that can be received on the GPS sensors port Null fields in the configuration sentence indicate no change in the particular configuration parameter All sentences received by the GPS sensor must be terminated with lt CR gt lt LF gt the ASCII characters for carriage return OD hexadecimal and line feed OA hexadecimal The checksum hh is used for parity checking data and is not required but is recommended for use in environments containing high electromagnetic noise It is generally not required in normal PC environments When used the parity bytes hh are the ASCII representation of the exclusive or XOR sum of all the characters between the and characters non inclusive The hex representation must be a capital letter such as 3D instead of 3d Sentences may be truncated by lt CR gt lt LF gt after any data fie
51. pecifications 190 00307 00 Rev D Page 4 1 5 TECHNICAL SPECIFICATIONS Specifications are subject to change without notice 1 5 1 Physical Characteristics 1 5 1 1 Size 61 mm in diameter and 19 5 mm in height 1 5 1 2 Weight e GPS 18 unit only no cable 1 9 oz 53 9 g e GPS 18 USB 3 5 oz 100 4 g e GPS 18 PC 6 5 oz 184 6 g e GPS 18 LVC 3 meter cable 3 9 oz 110 6 g e GPS 18 LVC 5m 5 meter cable 5 7 oz 161 6 g e GPS 18 5Hz 5 meter cable 5 7 oz 161 6 g 1 5 1 3 Color Black 1 5 1 4 Case Material Polycarbonate thermoplastic that is waterproof to IEC 60529 IPX7 level immersion in 1 meter of water for 30 minutes 1 5 1 5 Cable Length e GPS 18 USB 2 meter e GPS 18 PC 2 meter e GPS 18 LVC 3 meter Garmin Part Number 010 00321 05 e GPS 18 LVC 5m 5 meter Garmin Part Number 010 00321 06 e GPS 18 5Hz 5 meter 1 5 2 Electrical Characteristics 1 5 2 1 Input Voltage e GPS 18 USB 4 4 5 5 V e GPS18PC 8 30 V Automotive supply from cigarette lighter jack e GPS 18 LVC 4 0 5 5 V e GPS 18 5Hz 4 0 5 5 V 1 5 2 2 Input Current e GPS 18 USB 55 mA 5 0 V e GPS 18PC 50mA 13 8 V e GPS 18 LVC 60 mA 5 0 V e GPS 18 5Hz 65 mA 5 0 V 1 5 2 3 CMOS Serial Output Levels e GPS 18 PC 0 Vto5 V Asynchronous Serial TIA 232 F RS 232 Compatible Polarity e GPS 18 LVC and GPS 18 5Hz 0 V to Vin between 4 and 5 5 V Asynchronous Serial TIA 232 F RS 232 Compatible Polarity GPS 18 Technic
52. r the GPS 18 PC and LVC the factory set defaults result in a once per second transmission at the NMEA 0183 specification transmission rate of 4800 baud For the GPS 18 5Hz the factory set defaults will result in a five times per second transmission at 19200 baud For the GPS 18 LVC Regardless of the selected baud rate the information transmitted by the GPS sensor is referenced to the one pulse per second output pulse immediately preceding the GPRMC sentence or whichever sentence is output first in the burst see Table 2 above For the GPS 18 5Hz Regardless of the selected baud rate the information transmitted by the GPS sensor is referenced to the preceding five times per second output pulse GPS 18 Technical Specifications 190 00307 00 Rev D Page 15 4 2 2 Transmitted Time The GPS sensor outputs UTC Coordinated Universal Time date and time of day in the transmitted sentences Before the initial position fix the on board clock provides the date and time of day After the initial position fix the date and time of day are calculated using GPS satellite information and are synchronized with the measurement pulse output The GPS 18 5Hz outputs a UTC with a tenths of a second precision 123456 8 for example The GPS sensor uses information obtained from the GPS satellites to add or delete UTC leap seconds and correct the transmitted date and time of day The transmitted date and time of day for leap second correction follow the guidel
53. r all conditions in which the receiver has reported a valid and accurate position for at least the previous 4 seconds The NMEA 0183 sentences that follow each rising edge of the PPS signal tell when you were and where you were at that previous rising edge of the PPS signal beginning with the GPRMC sentence as the lead sentence in any particular NMEA 0183 record Regardless of the selected baud rate the information transmitted by the GPS 18 series products is referenced to the pulse immediately preceding the NMEA 0183 RMC sentence The accuracy of the one pulse per second output is maintained only while the GPS receiver is computing a valid position fix To obtain the most accurate results the one pulse per second output should be calibrated against a local time reference to compensate for cable and internal receiver delays and the local time bias The default pulse width is 100 ms however it may be programmed in 20 ms increments between 20 ms and 980 ms as described in PGRMC Section 4 1 2 Sensor Initialization Information PGRMD field lt 13 gt 4 4 2 Five Pulse Per Second Output GPS 18 5Hz Only The highly accurate five pulse per second output is provided for applications requiring precise timing measurements After the initial position fix has been calculated the GPS 18 5Hz generates the pulse signal which continues until power down The rising edge of the signal is aligned to the start of each GPS second within 1 us for all conditi
54. r appear as a NMEA 0183 device to your computer As a result mapping applications that expect to hear NMEA 0183 data will not recognize your GPS 18 P LVC until you re enable the NMEA 0183 output disabling the Phase Output Data in the process Refer to Appendix E Sensor Configuration Software for complete information about downloading the Sensor Configuration Software application After the Sensor Configuration Software is installed and running on your computer follow the steps below to change the default data output of the GPS 18 PC LVC or 18 5Hz 1 Select the GPS 18 PC LVC or the GPS 18 5Hz from the list of sensors and click OK The Sensor Configuration Software opens with the default configuration file for the Eisat GPS 18 as shown on the next page z GPS 10 P Which Garmin GPS 15 15U 2 Select Config gt Switch to NMEA Mode or press the F10 sensor are you C GPS 15H L key connecting to Gps 164 R C GPS 16 17 3 Select Comm gt Setup to open the Comm Setup Window C GPS 17N C GPS 18PC LVC GPS18 5Hz GPS 25 35 36 GPS 18 Technical Specifications 190 00307 00 Rev D Page 30 4 Select the Serial Port to which the GPS 18 is connected Select Auto SNSRCFG GARMIN Sensor Configuration Software File Comm Config View Help 5 x to have the program automatically determine the Baud Rate or select sle g ee 7i S Manual to manually select the Baud Rate of
55. r is plugged into the computer before the navigation software is up and running The Windows operating system may interpret the serial connector on the GPS 18 as a serial mouse Please refer to Appendix D GPS 18 PC LVC 18 5Hz amp Windows Serial Mouse Issue for complete details 1 4 3 GPS 18 LVC GPS 18 LVC 5m and GPS 18 5Hz These products interface to a serial port The units accept TIA 232 F RS 232 level inputs and transmit voltage levels that swing from ground to the positive supply voltage TIA 232 F RS 232 polarity They also have reverse polarity protection The cable contains wires for power ground receive transmit and measurement pulse output At the end of the cable the wires are terminated in a connector that is used by Garmin for testing purposes Most customers will remove this connector and replace it with another connector of their own choosing Removing the factory installed connector and or replacing with another customer supplied connector will have no affect on the warranty see Section 1 2 Limited Warranty The factory installed connector will mate with JST right angle PCB mount connector model BMO6B SRSS TBT or side entry PCB mount connector model SM06B SRSS TB You may obtain technical information on these PCB mount mating connectors from the JST Web site http www jst com Note Unless otherwise specified all references to the GPS 18 LVC also include the GPS 18 LVC 5m GPS 18 Technical S
56. splays the NMEA Sentence Selections Window If the sentence is enabled a check mark appears in the box to the left of the sentence name Click the box to enable or disable to the sentence NMEA Sentence Selections x r Selections V GPGGA i V GPGSA J PGRME V Pasy J PGRMF R t f V GPRMC I PGRMT a M GPyTG J PGRMV Cancel M Loci J PGRMM M teva I GPGLL GPS 18 Technical Specifications 190 00307 00 Page 33 Earth Datum Latitude fo fo os w Longitude fo B jo De BO 200 meter Automatic Y Altitude Fix Mode Differential Mode Baud Rate Automatic z 19200 M Velocity Filter Automatic z IV Pulse Per Second J Position Averaging I Phase Output Data NMEA 2 30 Mode J PPS Auto Off Mode Dead Reckon NMEA output Valid Time time PPS Length E s ff for DGPS Mode waas Only x J Adaptive Transmission T Auta Power on F dle Link Powe af Reset Unit Set Autolocate J Power Save Mode Reset Nonyol Test Mode rm Base Model x was 84 x GPS 10 CGPS ISIBU C GPSIBHYL C GPS 2 5 GPS 18 5Hz Beacon Station Freq Bit hate jp 0 J Aute Tone on lass Cancel Rev D Get Configuration From GPS F8 Retrieves the current programming from the sensor The programming is then displayed in the Main Interface Window Send Configuration To GPS F9 Sends the changes you have made to the programming to the sensor Swit
57. td Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey SO51 9DL U K Tel 44 0870 8501241 Fax 44 0870 8501251 Garmin Corporation No 68 Jangshu 2nd Road Shijr Taipei County Taiwan Tel 886 2 2642 9199 Fax 886 2 2642 9099 Web site address www garmin com RECORD OF REVISIONS Revision Revision Description ECO Filo a A _ 450 initad Release SS SSSC B emo Revise to ince PORMO a5 oc 5 c D 6605 Ada 38400 baud Field 10 of PGRMC semence 31511 _ D E E ee GPS 18 Technical Specifications 190 00307 00 Rev D Page i TABLE OF CONTENTS LUN O CUCU OM siceececieccsccciniccccscvenstsascsdudevasisessicddssivesieuesevesssebusdsscubecuetbuvevesesseeesescevecsseved Vel Caution eiri sete E E cated sad caveacdedadeveudepieaies E A AE ARER EE a iai 1 1 2 Limited Warranty sii icc ntuis ein cadainnhiinenintnd T R a T 2 13 Feature Sinnen a ien nina nee aan one aoe nea aoa ete 3 LA GPS 18 Series aint ania oats Miwa tastier emerald ata s 4 1 4 1 GPS TS USB EEE os csos craves AOE TA A T 4 1 4 2 GBS TS PC EEEE TE E EAEE Users 4 1 4 3 GPS 18 LVC GPS 18 LVC 5m and GPS 18 5HZ uci ececceseneesecseeeeseeeceeeseesesseeseeeceeesesesseeneeaees 4 1 5 Technical Specification Sisseneri eeni ieia ESE a eein eaaa Eao EEEE eaa nE Aa iape 5 1 5 1 Physical Characteristics Uwo LSI Seia E E a A aa RE een ante 5 LSA 2 Wehi anana na a A a E A lank e EA AR A EEEE E ES 5 ESL SCOR ai E E E E E E E E A
58. utes These complete GPS receivers require minimal additional components to be supplied by an OEM or system integrator A minimum system must provide the GPS with a source of power and a clear view of the GPS satellites Internal FLASH memory allows the GPS to retain critical data such as satellite orbital parameters last known position date and time End user interfaces such as keyboards and displays are the responsibility of the application designer 1 3 FEATURES e 12 channel GPS receiver tracks and uses up to 12 satellites for fast accurate positioning and low power consumption e Differential DGPS capability using real time WAAS corrections yielding position errors of less than 3 meters e Compact rugged design ideal for applications with minimal space Receiver position information can be displayed directly on a chartplotter or PC e User initialization is not required Once installed unit automatically produces navigation data after position fix is acquired e User configurable navigation mode 2 dimensional or 3 dimensional fix e GPS 18 LVC and GPS 18 5Hz only Highly accurate measurement pulse output for precise timing measurements one pulse per second 1 Hz for the GPS 18 LVC or 5 Hz for GPS 18 5Hz Pulse width is configurable in 20 millisecond increments from 20 ms to 980 ms with 1 us accuracy e Configurable for binary format carrier phase data output e FLASH based program and non volatile memory New software revisi
59. utput if NMEA 0183 version 2 30 active A Autonomous D Differential E Estimated N Data not valid 4 2 8 Track Made Good and Ground Speed VTG GPVTG lt 1 gt T lt 2 gt M lt 3 gt N lt 4 gt K lt 5 gt hh lt CR gt lt LF gt True course over ground GPS 18 PC and LVC 000 to 359 degrees GPS 18 5Hz 000 0 to 359 0 degrees leading zeros will be transmitted Magnetic course over ground 000 to 359 degrees GPS 18 5Hz 000 0 to 359 0 degrees leading zeros will be transmitted Speed over ground GPS 18 PC and LVC 000 0 to 999 9 knots GPS 18 5Hz 000 00 to 999 99 knots leading zeros will be transmitted Speed over ground GPS 18 PC and LVC 0000 0 to 1851 8 kilometers per hour GPS 18 5Hz 0000 00 to 1851 89 leading zeros will be transmitted Mode indicator only output if NMEA 0183 version 2 30 active A Autonomous D Differential E Estimated N Data not valid 4 2 9 Geographic Position GLL GPGLL lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt hh lt CR gt lt LF gt Latitude ddmm mmm format for GPS 18 PC LVC ddmm mmmmm format for GPS 18 5Hz leading zeros must be transmitted Latitude hemisphere N or S Longitude ddmm mmm format for GPS 18 PC LVC ddmm mmmmm format for GPS 18 5Hz leading zeros must be transmitted Longitude hemisphere E or W UTC time of position fix hhmmss format for GPS 18 PC LVC hhmmss s format for GPS 18
60. x Data GGA aie 4 2 5 GPS DOP and Active Satellites GSA cccccsccesscsssesseeessecesscsseeseseceseecesecnsseceseceseeseseesseeesseeenesens 4 2 6 GPS Satellites in View GSV Jair in a RN OEN EE E OR event eaves RETES 4 2 7 Recommended Minimum Specific GPS TRANSIT Data RMO eceeceeseeseceeceseeeeeeaeeeeeeeeeneeeaees 18 4 2 8 Track Made Good and Ground Speed VTG 0 eceeceeseesessseeseeseeeceeseceeeeseceeeaeceeeeseesecesetaeeeseeeeeaees 18 GPS 18 Technical Specifications 190 00307 00 Rev D Page ii 4 2 9 G ographie Position GLE scsi E a N aie ats a Gee erred 18 4 2 10 Estimated Error Information PGRME cccccccsscsssecssscesseceeeesseeeseesseeesseeeseeceseeeseeessesesseenseeessees 19 4FL GPSFix Data Sentence RGRME coreene A E E e N E eei 19 4 2 12 Sensor Status Information PGRMT ssssssssssssesssssessresressessssstssesstessrestesressressesresstsstessessresseestes 19 4 2 13 3D Velocity Information PGRMYV cecesescssceseceseeseceseeseceseeseceaesaeceseeseceaeeaeceeeseceeeaeeeeeeaeeeaees 19 4 2 14 DGPS Beacon Information PGRMB c ccccccssscssscessecesseesseceseecsseceseceseeessesesseceseecsaeeesesesseeeseeennees 20 4 3 Baud Rate Selection oriee ee calesenieiestedbes ae aa cel acissledagisedds ai iesi enii ieee Rie 20 4 4 Measurement Pulse Output GPS 18 LVC amp 18 5Hz only sssessessessersesersesssrsererssreerrsrerresrsreeseseeee 20 4 4 1 One Pulse Per Second PPS Output GPS

Garmin 190-00307-00 Automobile Accessories User Manual

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