Instruction/ maintenance manual of the product 15L Garmin
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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.
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.
190-00266-01 GPS 15H & 15L Technical Specificatio ns Rev. D Page iii TABLE OF CONTENTS 1 Introduction ..................................................................................................................1 1.1 Cautions ................
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) .
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.
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.
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.
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 .
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.
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.
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.
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).
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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>.
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 .
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.
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 7.
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.
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.
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.
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.
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.
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.
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) .
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.
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.
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.
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.
An important point after buying a device Garmin 15L (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Garmin 15L yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Garmin 15L - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Garmin 15L you will learn all the available features of the product, as well as information on its operation. The information that you get Garmin 15L will certainly help you make a decision on the purchase.
If you already are a holder of Garmin 15L, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Garmin 15L.
However, one of the most important roles played by the user manual is to help in solving problems with Garmin 15L. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Garmin 15L along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
