Garmin 010-11018-00 GPS 20x Technical Specifications - Page 3

190-00880-00

GPS 20x Technical Specifications

Rev. A

Page ii

TABLE OF CONTENTS

1

Introduction

..............................................................................................................................

1

1.1

Cautions

...........................................................................................................................................................

1

1.2

Limited Warranty

............................................................................................................................................

2

1.3

Overview

.........................................................................................................................................................

3

1.4

Features

...........................................................................................................................................................

3

1.5

Technical Specifications

..................................................................................................................................

4

1.5.1

Physical Characteristics

.....................................................................................................................................

4

1.5.1.1

Size

....................................................................................................................................................

4

1.5.1.2

Weight

...............................................................................................................................................

4

1.5.1.3

Color

..................................................................................................................................................

4

1.5.1.4

Case Material

.....................................................................................................................................

4

1.5.1.5

Cable Length

.....................................................................................................................................

4

1.5.2

Electrical Characteristics

...................................................................................................................................

4

1.5.2.1

Input Voltage

.....................................................................................................................................

4

1.5.2.2

Input Current

.....................................................................................................................................

4

1.5.2.3

GPS Receiver Sensitivity

..................................................................................................................

4

1.5.2.4

Environmental Characteristics

...........................................................................................................

4

1.5.3

GPS Performance

..............................................................................................................................................

4

1.5.3.1

Receiver

.............................................................................................................................................

4

1.5.3.2

Acquisition Times

.............................................................................................................................

4

1.5.3.3

Update Rate

.......................................................................................................................................

4

1.5.3.4

Accuracy

...........................................................................................................................................

5

1.5.4

Interfaces

...........................................................................................................................................................

5

1.5.4.1

GPS 20x Electrical Characteristics

....................................................................................................

5

1.5.4.2

Garmin Interface and Garmin USB Protocol

.....................................................................................

5

2

Mechanical Characteristics & Mounting

...............................................................................

6

3

GPS 20x Software Interface

....................................................................................................

7

3.1

Transmitted NMEA 0183 Sentences

...............................................................................................................

7

3.1.1

Sentence Transmission Rate

..............................................................................................................................

7

3.1.2

Transmitted Time

..............................................................................................................................................

8

3.1.3

Global Positioning System Fix Data (GGA)

.....................................................................................................

8

3.1.4

GPS DOP and Active Satellites (GSA)

.............................................................................................................

9

3.1.5

GPS Satellites in View (GSV)

...........................................................................................................................

9

3.1.6

Recommended Minimum Specific GPS/TRANSIT Data (RMC)

.....................................................................

9

3.1.7

Sensor Status Information (PGRMT)

..............................................................................................................

10

Appendix A: Earth Datum List

..................................................................................................

11

Appendix B: Garmin Binary Output Format

...........................................................................

14

LIST OF TABLES AND FIGURES

Figure 1. GPS 20x Top Case Dimensions

.....................................................................................................................

6

Figure 2. GPS 20x Side View

........................................................................................................................................

6

Figure 3. GPS 20x End View

........................................................................................................................................

6

Table 1: NMEA 0183 Output Sentence Order and Size

................................................................................................

7

Garmin 010-11018-00 GPS 20x Technical Specifications - Page 3

Introduction, Mechanical Characteristics & Mounting, GPS 20x Software Interface, Appendix A:

Page 3 highlights

Section	Page
1 INTRODUCTION	4
1.1 CAUTIONS	4
1.2 LIMITED WARRANTY	5
1.3 OVERVIEW	6
1.4 FEATURES	6
1.5 TECHNICAL SPECIFICATIONS	7
1.5.1 Physical Characteristics	7
1.5.1.1 Size	7
1.5.1.2 Weight	7
1.5.1.3 Color	7
1.5.1.4 Case Material	7
1.5.1.5 Cable Length	7
1.5.2 Electrical Characteristics	7
1.5.2.1 Input Voltage	7
1.5.2.2 Input Current	7
1.5.2.3 GPS Receiver Sensitivity	7
1.5.2.4 Environmental Characteristics	7
1.5.3 GPS Performance	7
1.5.3.1 Receiver	7
1.5.3.2 Acquisition Times	7
1.5.3.3 Update Rate	7
1.5.3.4 Accuracy	8
1.5.4 Interfaces	8
1.5.4.1 GPS 20x Electrical Characteristics	8
1.5.4.2 Garmin Interface and Garmin USB Protocol	8
2 MECHANICAL CHARACTERISTICS	9
3 GPS 20x SOFTWARE INTERFACE	10
3.1 TRANSMITTED NMEA 0183 SENTENCES	10
3.1.1 Sentence Transmission Rate	10
3.1.2 Transmitted Time	11
3.1.3 Global Positioning System Fix Data (GGA)	11
3.1.4 GPS DOP and Active Satellites (GSA)	12
3.1.5 GPS Satellites in View (GSV)	12
3.1.6 Recommended Minimum Specific GPS/TRANSIT Data (RMC)	12
3.1.7 Sensor Status Information (PGRMT)	13
APPENDIX A: EARTH DATUM LIST	14