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GPS 15
TECHNICAL
SPECIFICATIONS
GARMIN International, Inc.
st
1200 E. 151 Street
Olathe, KS 66062 USA
190-00266-00, Revision A
August 2002
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© Copyright 2002 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 m
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TABLE OF CONTENTS 1. INTRODUCTION 1.1 CAUTIONS ........................................................................................................................................................ 1 1.2 LIMITED WARRANTY .................................................................................................................................... 2 1.3 OVERVIEW..................................................................................................................................
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LIST OF FIGURES FIGURE 1. COMPUTER SERIAL PORT INTERCONNECTION ................................................................................ 7 FIGURE 2. PDA SERIAL PORT INTERCONNECTION.............................................................................................. 7 FIGURE 3. BASIC NMEA DEVICE INTERCONNECTION........................................................................................ 7 FIGURE 4. GPS 15-F DIMENSIONS.................................................
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1 INTRODUCTION 1.1 CAUTIONS CAUTION The GPS system is operated by the government of the United States, which is solely responsible for its accuracy and maintenance. Although the GPS 15 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 15. When in actual use, carefu
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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 un
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1.3 OVERVIEW The GPS 15 is part of GARMIN’s latest generation of GPS sensor boards designed for a broad spectrum of OEM (Original Equipment Manufacture) system applications. Based on the proven technology found in other GARMIN 12-channel GPS receivers, the GPS 15 will track up to 12 satellites at a time while providing fast time-to-first-fix, one-second navigation updates and low power consumption. Its far-reaching capabilities meet the sensitivity requirements of land navigation as well as th
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1.5 TECHNICAL SPECIFICATIONS Specifications are subject to change without notice. 1.5.1 Physical Characteristics 1.5.1.1 Size 0.940” (23.88 mm) wide, 1.690” (42.93 mm) long, 0.309” (7.84 mm) high 1.5.1.2 Weight 0.35 oz. (10 g) 1.5.1.3 Available Connector Options • GPS 15-F: GPS 15-F: 6-pin LIF connector, 1 millimeter pitch • GPS 15-W: GPS 15-W: 6-pin JST connector, 1 millimeter pitch; mating wire harness included (NOTE: available in Asia, or by special order) 1.5.2 Electrical Characteristics 1.5
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1.5.4 Interfaces 1.5.4.1 Electrical Characteristics 1.5.4.1.1 GPS 15 • CMOS level output for interfacing directly to a host microprocessor. • Jumper settings determine baud rate. Factory setting is 4800 baud. 1.5.4.2 Port 1 Protocols • NMEA 0183 Version 3.00 • ASCII output sentences GPGGA, GPGSA, GPGSV, and GPRMC (NMEA-approved sentences); PGRME, PGRMM, and PGRMT (GARMIN proprietary sentences) • NMEA 0183 Outputs (see Section 3.2 for full protocol specifications) Position, velocity and time Rec
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2 PINOUT 2.1 DESCRIPTION The GPS 15-F utilizes a six-pin LIF connector. The GPS 15-W utilizes a six-pin JST connector with mating wire harness included. Table 1. Signal/Wire Descriptions GPS 15 Signal Name Description Pin # 1 BACKUP POWER This input provides external power to maintain the battery-backed SRAM and real-time clock. This enables the user to provide backup power if needed for longer than the optional on-board backup battery will provide (roughly 21 days). Input voltage must be bet
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1 1 2.2 DIAGRAMS (-) (+) Fuse GPS 15 1A Power Source Computer Serial Port Interconnection (1) WHITE: BACKUP POWER PIN 5: GROUND (2) BLACK: GROUND 9 (3) RED: POWER 4 PIN 3: DATA OUT GPS 15 8 (4) YELLOW: PORT 1 DATA OUT 7 Power/Data Cable PIN 2: DATA IN (5) BLUE: PORT 1 DATA IN 6 (6) ORANGE: RF BIAS DB-9 Serial Connector (Female Pin Contacts) Figure 1. Computer Serial Port Interconnection (-) (+) Fuse GPS 15 1A Power Source PDA Serial Port Interconnection (1) WHITE: BACKUP POWER (2) BLACK: GROUND
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3 SOFTWARE INTERFACE The GPS 15 interface protocol design on COM 1 is based on the National Marine Electronics Association’s NMEA 0183 ASCII interface specification. This standard is fully defined in “NMEA 0183, Version 3.0” (copies may be obtained from NMEA, www.nmea.org). The GPS 15 interface protocol, in addition to transmitting navigation information as defined by NMEA˚0183, transmits additional information using the convention of GARMIN proprietary sentences. The following sections describ
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3.1.2 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,<1>,
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3.2 TRANSMITTED NMEA 0183 SENTENCES The subsequent paragraphs define the sentences that can be transmitted on COM 1 by the GPS sensor. 3.2.1 Sentence Transmission Rate The GPS sensor will transmit each sentence (except where noted in particular transmitted sentence descriptions) at a one-second rate. The GPS sensor will transmit the following sentences contiguously. The contiguous transmission starts at a GPS second boundary. The information transmitted by the GPS sensor is referenced to the
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3.2.2 Transmitted Time The GPS sensor outputs UTC (Coordinated Universal Time) date and time of day in the transmitted sentences. Prior to 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. 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
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3.2.5 GPS Satellites in View (GSV) $GPGSV,<1>,<2>,<3>,<4>,<5>,<6>,<7>,...<4>,<5>,<6>,<7>*hh <1> Total number of GSV sentences to be transmitted <2> Number of current GSV sentence <3> Total number of satellites in view, 00 to 12 (leading zeros will be transmitted) <4> Satellite PRN number, 01 to 32 (leading zeros will be transmitted) <5> Satellite elevation, 00 to 90 degrees (leading zeros will be transmitted) <6> Satellite azimuth, 000 to 359 degrees, true (leading zeros will be transmit
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3.2.9 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,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>*hh <1> Product, model and software version (variable length field, e.g., “GPS 17 VER 2.05”) <2> ROM checksum test, P = pass, F = fail <3> Receiver failure discrete, P = pass, F = fail <4> Stored data lost, R = retained, L = los
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4 MECHANICAL CHARACTERISTICS & MOUNTING .167 4.24 .081 .940 .142 .047 2.06 23.88 3.60 1.19 .198 5.04 A .177 4.50 1.690 1.490 42.93 1.387 37.85 PIN 1 35.22 .037 0.94 .309 .105 7.84 .432 DETAIL A 2.67 10.97 SCALE 3 : 1 .110 .735 2.79 18.67 NOTES: 1. DIMENSIONS IN MILLIMETERS [INCHES]. 2. DIMENSION TOLERENCES: 0.25mm [ 0.10"]. 3. USE M2 MOUNTING SCREWS. Figure 4. GPS 15-F Dimensions PIN 1 NOTES: 1. DIMENSIONS IDENTICAL TO GPS 15-F. 2. USE M2 MOUNTING SCREWS. Figure 5. GPS 15-W Outline Drawing Page
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Appendix A Earth Datums The following is a list of the GARMIN GPS 15 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 - 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 AU
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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 - Eritrea (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, Hondu
