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Garmin 15L manual

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  • Page 1

    GPS 15H & 15L TECHNICAL SPECIFICATIONS ® Garmin International, Inc. 1200 E. 151 st Street Olathe, KS 66062 US A 190-00266-01 , Rev ision D February 2006[...]

  • Page 2

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page ii © Copyright 2004–2006 G armin Ltd . or its subsidiaries 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 (Eur ope) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO[...]

  • Page 3

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page iii TABLE OF CONTENTS 1 Introduction ..................................................................................................................1 1.1 Cautions ...................................................................................................................[...]

  • Page 4

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page iv 4.2.12 Map Datum (P GRMM) .............................................................................................................. ..........18 4.2.13 Sensor Status Info rm ation (PGRMT) .....................................................................................[...]

  • Page 5

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 1 1 INTRODUCTION 1.1 CAUTIONS Caution The GPS system is operated by the government of the United States, which is so lely respo nsible for its accuracy and maintenance. Althoug h the GPS 15H & 15L sensors are precision electronic NAVigation AIDs (NAVA ID), any NAV AID can be m[...]

  • Page 6

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 2 1.2 LIMITED WARRANTY This Garmi n product is warra nted to be free from defects in materi als or workm anship for one year from the date of purchase. Within this period, Garmin w ill at its sole option repair or replace a ny components that fail in normal use. Such repairs or re[...]

  • Page 7

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 3 • • 1.3 OVERVIEW The GPS 15H & 15L are pa rt of Garmi n’s latest generat ion of GPS se nsor boa rds designed for a broad spectrum of OEM (Original Equipment Manufactur e) system applications. Based on the pr ov en technology found in other Garmin 12-channel GP S receiv[...]

  • Page 8

    190-00266-01 GPS 15H & 15L Technical Specificatio ns 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 1.400” (35.5 6 m m) wide x 1.805” ( 45 .8 5 m m ) long x 0.327” (8 .3 1 m m ) high 1.5.1.2 Weight GPS 15H: 0.53 oz. (15.0 g) GPS 15L: 0[...]

  • Page 9

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 5 • • • • • • • • • • 1.5.4 GPS Performance 1.5.4.1 Receiver WAAS Enabled™, 12 parallel channel GPS receiver continuously tracks a nd uses up to 12 satellites (up to 11 with PPS ac tive) to com pute and updat e your posit ion. 1.5.4.2 Acquisition Times Reacqu[...]

  • Page 10

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 6 • • • • • 1.5.5 Interfaces 1.5.5.1 GPS 15H & 15L Electrical Characteristics True RS-232 output (Port 2 ou tpu t not used at time of publication ), asynchronous serial input compatible with RS-232 or TTL voltage levels, RS-232 polarity. User selectable N MEA 0183 ba[...]

  • Page 11

    Noise Figure/Gain: The total noise figure on the extern al an tenna must be ≤ 7 dB. Refer to the table below. 10. 0 11. 0 12. 0 13. 0 14. 0 15. 0 16. 0 17. 0 18. 0 10.0 15. 0 20.0 25. 0 30.0 35. 0 40. 0 G a in (d B ) SNR (dB) NF=1 . 3dB NF=2.3dB NF= 3. 3d B NF=4.3dB NF= 5. 3d B NF=6.3dB NF=7 . 3dB Table 1: Gain vs. SNR for Given Noi se Figure Pro[...]

  • Page 12

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 8 2 GPS 15H & 15L WIRE DESCRIPTIO NS AND WIRING DIAGRAMS The GPS 15H-F & 15L-F use an eight-conta ct flex ci rcuit LIF (low i nsertion force) con nector. The GPS 15H-W & 1 5L-W use an eig ht-pin JST con nector (mat ing wire harness i ncluded). See se ction 1. 5.1.3 . 2[...]

  • Page 13

    2.2 GPS 15H & 15L WIRING DIAGRAMS Figure 1: Computer Serial Port Interconnection Figure 2: PDA Seri al Port Interconnecti on Figure 3: Basic NMEA Devi ce Interconnection 190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 9[...]

  • Page 14

    3 MECHANICAL CHARACTERISTICS & MOUNTING 1. Dimensions in millimeters [inches] 2. Dimension tolerance: +/-0.25 mm [±0.01”] 3. Use M2 mounting screws Figure 4: GPS 15H-F & 15L-F Dimensions 1. Dimensions identical to GPS 15H-F and GPS 15L-F 2. Use M2 mounting screws Figure 5: GPS 15H-W & 15L -W Outline Drawi ng 190-00266-01 GPS 15H &[...]

  • Page 15

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 11 4 GPS 15H & 15L SOFTWARE INTERFACE The GPS 15H & 15L interfac e protocol desi gn on COM 1 is based o n the National M arine Electro nics Association’s NMEA 0183 ASCII interfac e specificatio n. The COM 2 port can receive differential GPS (DGPS) correction data using t[...]

  • Page 16

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 12 4.1.2 Sensor Initialization Information (PGRMI) The $PGRMI sentence provides information used to initialize th e GPS sensor’s set position and time used for satellite acquisition. Receipt of this sentence by the GPS sensor causes the software to restart the satellite acquisit[...]

  • Page 17

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 13 4.1.4 Additional Sensor Configuration Information (PGRMC1) The $PGRMC 1 sentence provides additional information u sed to configur e the GPS sens or operation. Configuration parameters are stored in non-volatile memory and retain ed between power cycles. The GPS sensor echoes t[...]

  • Page 18

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 14 4.1.6 Tune DGPS Beacon Receiver (PSLIB) The $PSLIB sentence provides the ability to tu ne a Garmin GBR 21, GBR 23 or equivalent beacon receiver. $PSLIB,<1>,< 2>*hh<CR><LF> <1> Beacon tune frequency, 0.0, 28 3.5–325.0 kHz in 0.5 kHz steps <2>[...]

  • Page 19

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 15 4.2 TRANSMITTED NMEA 0183 SENTENCES The subseque nt paragrap hs define the se ntences that can be transmitt ed on COM 1 by t he GPS sensor. 4.2.1 Sentence Transmission Rate Sentences are transmitted with respect to the user-selected baud rate. Regardless of the selected baud ra[...]

  • Page 20

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 16 4.2.2 Transmitted Time The GPS sensor output s UTC (C oor di nate d Universal Time) date and time of day in the transmitted sentences. Before the initial positio n fix, the on-bo ard clock provides the date and time of day. After the initial position fix, the date and time of d[...]

  • Page 21

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 17 4.2.5 GPS DOP and Active Satellites (GSA) $GPGSA,<1>, <2>,<3>,<3>, <3>,<3> ,<3>, <3>,<3>,<3>, <3>,<3>,<3> ,< 3>,<4>,<5>,<6>*h h<CR><LF> <1> Mode, M = manual, [...]

  • Page 22

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 18 4.2.9 Geographic Position (GLL) $GPGLL,<1>, <2>,<3>,<4>,<5>,< 6>,<7>*hh<CR><L F> <1> Latitude, ddmm.mmmm format (leading zero s are transmitted ) <2> Latitude hem isphere, N o r S <3> Longitude, dddmm. mmmm[...]

  • Page 23

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 19 4.2.13 Sensor Status Information (PGRMT) The Garmin Pr oprietary sentence $PGRMT gi ves inform ation concerning the status of t he GPS sensor. This sentence is transmitted once per minut e regardless of the selected baud rate. $PGRMT,<1> ,<2>,<3>,<4>, &l[...]

  • Page 24

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 20 4.3 BAUD RATE SELECTION Baud rate selec tion can be performed by se nding the ap propriate config uration sentence to the GPS se nsor as described i n the $PGR MC section 4.1.3 , fi eld <10>. 4.4 ONE-PULSE-PER-SECO ND (PPS) OUTPUT The highly accurate one-pulse-per-sec ond[...]

  • Page 25

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 21 APPENDIX A: EARTH DATUMS The following is a list of the Garmin GPS 15H & 15 L Eart h datum i ndices and the c orrespondin g earth datum name (including the area of application): 0 ADINDAN - Ethiopia, M ali, Sene gal, Sudan 1 AFGOOYE - Somalia 2 AIN EL ABD 1970 - Bahrain Isl[...]

  • Page 26

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 22 36 HONG KONG 1963 - Hong Kong 37 INDIAN - Ba ngladesh, Indi a, Nepal 38 INDIAN - T hailand, Vietnam 39 IRELAND 1965 - Ireland 40 ISTS O73 ASTRO 1969 - Diego Garcia 41 JOHNSTON ISLAND 196 1 - Johnston Islan d 42 KAND AW ALA - Sri Lank a 43 KERGUELEN ISLA ND - Kerguelen Island 44[...]

  • Page 27

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 23 75 PICO DE LAS NI EVES - Canary Islan ds 76 PITCAIRN ASTRO 1967 - Pitcairn Island 77 PUERTO RICO - Puerto Rico, Virgin Islands 78 QATAR NATIONAL - Qatar 79 QORNOQ - Sout h Greenland 80 REUNION - Mascarene Island 81 ROME 1940 - Sardinia Island 82 RT 90 - Sweden 83 PROVISIONAL SO[...]

  • Page 28

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 24 APPENDIX B: BINARY PHA SE OUTPUT FORMAT In binary phase outp ut mode, GP S 15H & 1 5L series prod ucts transmi t two types of packets once pe r second. One re cord contai ns primaril y post-process i nformat ion such as po sition and velocity i nformation. The second record[...]

  • Page 29

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 25 The status bit field represe nts a set of bool eans describe d below: Bit Meaning when bit is o ne (1) 0 The unit has ephemeris data for the specified satellite. 1 The unit has a differential correction for the specified satellite. 2 The unit is using this satellite in th e sol[...]

  • Page 30

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 26 Position Record The Position Record has a record iden tifier 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_dat[...]

  • Page 31

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 27 svid Satellite n umber (0-31 and 119-138 for WAAS) Note: Add 1 to offset to current svid numbers. valid 0 = inform ation not vali d; non-zero = informat ion valid Sample C Code DLE and ETX bytes: Sample C code to receive t he two records shoul d filter DLE and ETX bytes as desc[...]

  • Page 32

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 28 APPENDIX C: CHANGING THE BAUD RATE IN GARMIN MODE In certain cases, you m ay need to change the de fau lt baud rate of your Garm in GPS receiver while in Garmin mode. Follow these steps to tem porarily change the baud rate. Refer to the Garmin Device Interface Specification fo [...]

  • Page 33

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 29 APPENDIX D: EPHEMERIS DATA DO WNLOAD (PROGRAMMING EXAMPLE) Synopsis This section describes, usi ng an exam ple, how to do wnload ephem eris inform ation from a Ga rmin 15, 1 6, 17 or 18 family GPS unit w ith th e exception of the GPS 15-W and the GPS 15-F. Garmin Binary Format [...]

  • Page 34

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 30 Ephemeris Download Procedure The following is the sequence of even ts that occurs when downloading eph emeris data. Send a packet cont aining the command t hat requests ep hemeris data ( IOP_DOWN_LOAD_EPH) . The packet should look like th is: TX Packet: Ephemeris Data Request B[...]

  • Page 35

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 31 Next, the unit sends the specified nu mber of packets containing the ep hemeri s information. An example packet is shown below. Each packet should be ackn owledged as be fore (be sure to modify t he ACK packet to indicate wha t type of packe t being ackno wledged—fo r ephemer[...]

  • Page 36

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 32 An example function to complete the p arsing is shown be low. Note that the double data types are converted by the functi on cnvt_ieee_double() . This function merely swaps the upper and lower word s of the double. This is necessary on GPS 15, 16, 17 series sensors due to a com[...]

  • Page 37

    190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page 33 Each data m ember of the ephem eris data struct ure is inde xed into the da ta array of t he ephemeris pac ket and cast as the appropriate data type. T he indices are as follows (note that they correlate to the d a ta members of the structure respectively): #define IDX_EPH_WN 0[...]

  • Page 38

    APPENDIX E: DECLARATION OF CONFORMITY Hereby, Garm in Ltd., decla res that this GPS 1 5H/15L is in com pliance with the essential requ irements and other releva nt pr ovisions of Direct i ve 1 99 9 / 5/ EC . For the latest free software updates (excluding map data) thro ughout the lif e of your Garmin products, visit the Garmin Web site at www.ga r[...]