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190-00880-00 

GPS 20x Technical Specifications  

Rev. A 

Page 1 

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 20x 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 20x. 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 

This product has been tested and found to comply with Part 15 of the FCC interference limits for Class B digital 
devices FOR HOME OR OFFICE USE. These limits are designed to provide more 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 may cause harmful interference to radio 
communications if not installed and used in accordance with the instructions. However, there is no guarantee that 
interference will not occur in a particular 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 of the following measures: 

 

Reorient or relocate the receiving antenna. 

 

Increase the separation between the equipment and the receiver. 

 

Connect the equipment into an outlet that is on a different circuit from the GPS unit. 

 

Consult the dealer or an experienced radio/TV technician for help. 

This product does not contain any user-serviceable parts. Repairs should only be made by an authorized Garmin 
service center. 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. 

 

Содержание GPS 20x

Страница 1: ...GPS 20x TECHNICAL SPECIFICATIONS Garmin International Inc 1200 E 151st Street Olathe KS 66062 USA 190 00880 00 Revision A January 2008 a...

Страница 2: ...print one copy of this manual or of any revision hereto provided that such electronic or printed copy of this manual must contain the complete text of this copyright notice and provided further that a...

Страница 3: ...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 Interfa...

Страница 4: ...ation 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 cau...

Страница 5: ...ABLE 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 exc...

Страница 6: ...application designer The GPS 20x interfaces to a computer with an available USB port Drivers are available for use on Windows computers Macintosh and Linux drivers are not available from Garmin After...

Страница 7: ...2 1 Input Voltage 4 4 5 5 Vdc 1 5 2 2 Input Current 110 mA 5 0 Vdc 1 5 2 3 GPS Receiver Sensitivity 185 dBW minimum 1 5 2 4 Environmental Characteristics Operating Temperature 30 C to 80 C 22 F to 176...

Страница 8: ...vice Interface SDK for information about the Garmin Interface and the Garmin USB Protocol At the time of this printing this document is located on the Garmin Web site at www garmin com support commPro...

Страница 9: ...TICS 1 7 in 42 8 mm 1 3 in 32 4 mm Figure 1 GPS 20x Top Case Dimensions 1 7 in 42 8 mm 0 5 in 12 mm Figure 2 GPS 20x Side View 0 5 in 12 mm Figure 3 GPS 20x End View 190 00880 00 GPS 20x Technical Spe...

Страница 10: ...tted by the GPS 20x using Spanner an application that can provide NMEA output via a virtual COM port Spanner is available for free on the Garmin web site To download the software start at www garmin c...

Страница 11: ...3851 3651 N 09447 9382 W 000 0 221 9 081103 003 3 E 67 GPRMC 000000 A 3851 3651 N 09447 9382 W 000 0 221 9 081103 003 3 E 67 GPRMC 000001 A 3851 3651 N 09447 9382 W 000 0 221 9 081103 003 3 E 66 If a...

Страница 12: ...will be transmitted Note Items 4 5 6 and 7 repeat for each satellite in view to a maximum of four 4 satellites per sentence GSV will be repeated as necessary to output all satellites in view up to 12...

Страница 13: ...lity 3 No Effect This field is not used on this model and is included only for backwards compatibility 4 No Effect This field is not used on this model and is included only for backwards compatibility...

Страница 14: ...2 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 Bel...

Страница 15: ...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...

Страница 16: ...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 TIMBALAI 1948 Brunei and East Mal...

Страница 17: ...mmand base 10 Position Record On 49 Position Record Off 50 Note that the satellite data information is also enabled when the position record is enabled USB packets contain a header with a USB transpor...

Страница 18: ...cpo_sat_data The status bit field represents a set of booleans described below Bit Meaning when bit is one 1 0 The unit has ephemeris data for the specified satellite 1 The unit has a differential co...

Страница 19: ...ians lon_vel Longitude velocity meters second lat_vel Latitude velocity meters second alt_vel Altitude velocity meters second msl_hght Height mean sea level meters leap_sec UTC leap seconds grmn_days...

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