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Trimble Outdoors AgGPS 252 TableA.2 lists the performance characteristics of GPS channels.

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A Specifications

54 AgGPS 252 Receiver User Guide

A.2GPS Channels

TableA.2 lists the performance characteristics of GPS channels.

Ports Two connection ports, both of which support RS-232 and CAN

Mounting Three holes for 10mm (0.39 in) bolts

Compliance FCC Part 15 Class A, C-Tick, E-mark,

CE-mark

Table A.2 GPS channels performance

Item Description

General 12-channel, parallel tracking L1 1571.42MHz and L2

1227.60MHz. C/A code and carrier phase filtered measurement.

Update rate 1, 5, 10Hz

RTK speed accuracy 0.16kph (0.10 mph)

RTK position accuracy Horizontal 2.5 cm (0.98 in) + 2 ppm, 2 sigma, and vertical 3.7 cm

(1.46in ) + 2 ppm, 2 sigma, if all of the following criteria are

met:

•At least 5 satellites

•PDOP <4

•CMR corrections

•Standard format broadcast from a Trimble MS750, AgGPS 214,

or equivalent reference station

Differential speed accuracy 0.16kph (0.1mph)

Differential position

accuracy

Less than 1 m (3.28 ft) horizontal if all of the following criteria

are met:

•At least 5 satellites

•PDOP <4

•RTCM SC-104 corrections

•Standard format broadcast from a Trimble MS750, AgGPS 214,

or equivalent reference station

OmniSTAR HP speed

accuracy

0.16kph (0.1 mph)

Tabl e A. 1 AgGPS 252 receiver (continued)

Item Description

Ag252_100B_UserGuide_ENG.book Page 54 Thursday, July 28, 2005 4:06 PM

Contents

Main trimble_support@trimble.com www.trimble.com C Recycling in Europe Page Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . .1 2 Overview . . . . . . . . . . . . . . . . . . . . . . . . .3 3 Installing the Receiver. . . . . . . . . . . . . . . . . 17 Page Introduction C Overview Page Page Page Page 2 Overview 8 AgGPS 252 Receiver User Guide Note WAAS/EGNOS and OmniSTAR VBS use the Satellite Differential GPS positioning method. Table 2.1 LED sequences with Satellite Differential GPS or Autonomous positioning Table 2.2 LED sequences with RTK positioning AgGPS 252 Receiver User Guide 9 Overview 2 Table 2.3 LED sequences with OmniSTAR HP positioning Table 2.2 LED sequences with RTK positioning (continued) Page Page Page AgGPS 252 Receiver User Guide 13 Overview 2 Table 2.5 Factors that influence the accuracy of GPS positions 2 Overview 14 AgGPS 252 Receiver User Guide Table 2.5 Factors that influence the accuracy of GPS positions (continued) Page Page Installing the Receiver Page C Page Page Page Page Page AgGPS 252 Receiver User Guide 25 Installing the Receiver 3 Table 3.4 Port B pinout Table 3.3 Port A pinout (continued) Page Configuring the Receiver D/3D 07 DOP03 WAAS 122 04 Page Page Operate in RTK Mode Page AgGPS 252 Receiver User Guide 33 Configuring the Receiver 4 The default port settings are: Table 4.1 Port input settings I RTCM 9600 8N1 0 NMEA 4800 Page Page Troubleshooting 38 AgGPS 252 Receiver User Guide Global Positioning System (GPS) AgGPS 252 Receiver User Guide 39 Troubleshooting 5 40 AgGPS 252 Receiver User Guide Page 42 AgGPS 252 Receiver User Guide Interference AgGPS 252 Receiver User Guide 43 Troubleshooting 5 GPS receiver AgRemote utility FlashLoader 200 upgrade utility Page Page AgGPS 252 Receiver User Guide 47 Ag252_100B_UserGuide_ENG.book Page 47 Thursday, July 28, 2005 4:06 PM START HERE Figure 6.1 Troubleshooting system hardware and power 48 AgGPS 252 Receiver User Guide Ag252_100B_UserGuide_ENG.book Page 48 Thursday, July 28, 2005 4:06 PM R E H AgGPS 252 Receiver User Guide 49 Ag252_100B_UserGuide_ENG.book Page 49 Thursday, July 28, 2005 4:06 PM R E H 50 AgGPS 252 Receiver User Guide Ag252_100B_UserGuide_ENG.book Page 50 Thursday, July 28, 2005 4:06 PM R E H AgGPS 252 Receiver User Guide 51 Ag252_100B_UserGuide_ENG.book Page 51 Thursday, July 28, 2005 4:06 PM START HERE Figure 6.5 Using AgRemote to troubleshoot RTK Page APPENDIX A AgGPS 252 Receiver User Guide 53 Specifications Tabl e A. 1 AgGPS 252 receiver A Specifications TableA.2 lists the performance characteristics of GPS channels. 54 AgGPS 252 Receiver User Guide Table A.2 GPS channels performance Tabl e A. 1 AgGPS 252 receiver (continued) AgGPS 252 Receiver User Guide 55 Receiver Table A.3 L-Band satellite differential correction receiver with OmniSTAR support Table A.2 GPS channels performance (continued) TableA.4 lists the receiver default settings. APPENDIX B AgGPS 252 Receiver User Guide 57 Third-Party Interface Requirements Table B.1 Third-party software interface requirements B Third-Party Interface Requirements TableB.2 lists the interface requirements for connecting an AgGPS receiver to third-party hardware. Table B.2 Third-party h ardware interface require ments Table B.1 Third-party software interface requirements (continued) AgGPS 252 Receiver User Guide 59 Third-Party Interface Requirements B Table B.2 Third-party hardware interface requirements (continued) B Third-Party Interface Requirements 60 AgGPS 252 Receiver User Guide Table B.2 Third-party hardware interface requirements (continued) Index Numerics A B C D E F G H I J L M P R S T U V W Y